forked from AuroraMiddleware/gtk
5954 lines
176 KiB
C
5954 lines
176 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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||
* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.Free
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtklabelprivate.h"
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#include "gtkbuildable.h"
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#include "gtkbuilderprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include "gtkeventcontrollermotion.h"
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#include "gtkeventcontrollerfocus.h"
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#include "gtkgesturedrag.h"
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#include "gtkgestureclick.h"
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#include "gtkgesturesingle.h"
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#include "gtkimage.h"
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#include "gtkintl.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtknotebook.h"
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#include "gtkpango.h"
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#include "gtkprivate.h"
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#include "gtkshortcut.h"
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#include "gtkshortcutcontroller.h"
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#include "gtkshortcuttrigger.h"
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#include "gtkshow.h"
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#include "gtksnapshot.h"
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#include "gtkstylecontextprivate.h"
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#include "gtktextutil.h"
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#include "gtktooltip.h"
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#include "gtktypebuiltins.h"
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#include "gtkwidgetprivate.h"
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#include "gtkwindow.h"
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#include "gtkpopovermenu.h"
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#include "gtknative.h"
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#include "gtkdragsource.h"
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#include "gtkdragicon.h"
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#include "gtkcsscolorvalueprivate.h"
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#include <math.h>
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#include <string.h>
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/**
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* SECTION:gtklabel
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* @Short_description: A widget that displays a small to medium amount of text
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* @Title: GtkLabel
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*
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* The #GtkLabel widget displays a small amount of text. As the name
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* implies, most labels are used to label another widget such as a #GtkButton.
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*
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* # CSS nodes
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*
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* |[<!-- language="plain" -->
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* label
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* ├── [selection]
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* ├── [link]
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* ┊
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* ╰── [link]
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* ]|
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*
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* GtkLabel has a single CSS node with the name label. A wide variety
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* of style classes may be applied to labels, such as .title, .subtitle,
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* .dim-label, etc. In the #GtkShortcutsWindow, labels are used with the
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* .keycap style class.
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*
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* If the label has a selection, it gets a subnode with name selection.
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*
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* If the label has links, there is one subnode per link. These subnodes
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* carry the link or visited state depending on whether they have been
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* visited. In this case, label node also gets a .link style class.
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*
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* # GtkLabel as GtkBuildable
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*
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* The GtkLabel implementation of the GtkBuildable interface supports a
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* custom <attributes> element, which supports any number of <attribute>
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* elements. The <attribute> element has attributes named “name“, “value“,
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* “start“ and “end“ and allows you to specify #PangoAttribute values for
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* this label.
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*
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* An example of a UI definition fragment specifying Pango attributes:
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* |[
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* <object class="GtkLabel">
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* <attributes>
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* <attribute name="weight" value="PANGO_WEIGHT_BOLD"/>
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* <attribute name="background" value="red" start="5" end="10"/>
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* </attributes>
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* </object>
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* ]|
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*
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* The start and end attributes specify the range of characters to which the
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* Pango attribute applies. If start and end are not specified, the attribute is
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* applied to the whole text. Note that specifying ranges does not make much
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* sense with translatable attributes. Use markup embedded in the translatable
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* content instead.
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*
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* # Accessibility
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*
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* GtkLabel uses the #GTK_ACCESSIBLE_ROLE_LABEL role.
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*
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* # Mnemonics
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*
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* Labels may contain “mnemonics”. Mnemonics are
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* underlined characters in the label, used for keyboard navigation.
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* Mnemonics are created by providing a string with an underscore before
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* the mnemonic character, such as `"_File"`, to the
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* functions gtk_label_new_with_mnemonic() or
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* gtk_label_set_text_with_mnemonic().
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*
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* Mnemonics automatically activate any activatable widget the label is
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* inside, such as a #GtkButton; if the label is not inside the
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* mnemonic’s target widget, you have to tell the label about the target
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* using gtk_label_set_mnemonic_widget(). Here’s a simple example where
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* the label is inside a button:
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*
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* |[<!-- language="C" -->
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* // Pressing Alt+H will activate this button
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* GtkWidget *button = gtk_button_new ();
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* GtkWidget *label = gtk_label_new_with_mnemonic ("_Hello");
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* gtk_button_set_child (GTK_BUTTON (button), label);
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* ]|
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*
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* There’s a convenience function to create buttons with a mnemonic label
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* already inside:
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*
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* |[<!-- language="C" -->
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* // Pressing Alt+H will activate this button
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* GtkWidget *button = gtk_button_new_with_mnemonic ("_Hello");
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* ]|
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*
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* To create a mnemonic for a widget alongside the label, such as a
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* #GtkEntry, you have to point the label at the entry with
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* gtk_label_set_mnemonic_widget():
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*
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* |[<!-- language="C" -->
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* // Pressing Alt+H will focus the entry
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* GtkWidget *entry = gtk_entry_new ();
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* GtkWidget *label = gtk_label_new_with_mnemonic ("_Hello");
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* gtk_label_set_mnemonic_widget (GTK_LABEL (label), entry);
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* ]|
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*
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* # Markup (styled text)
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*
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* To make it easy to format text in a label (changing colors,
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* fonts, etc.), label text can be provided in a simple
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* [markup format][PangoMarkupFormat].
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*
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* Here’s how to create a label with a small font:
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* |[<!-- language="C" -->
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* GtkWidget *label = gtk_label_new (NULL);
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* gtk_label_set_markup (GTK_LABEL (label), "<small>Small text</small>");
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* ]|
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*
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* (See [complete documentation][PangoMarkupFormat] of available
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* tags in the Pango manual.)
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*
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* The markup passed to gtk_label_set_markup() must be valid; for example,
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* literal <, > and & characters must be escaped as <, >, and &.
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* If you pass text obtained from the user, file, or a network to
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* gtk_label_set_markup(), you’ll want to escape it with
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* g_markup_escape_text() or g_markup_printf_escaped().
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*
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* Markup strings are just a convenient way to set the #PangoAttrList on
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* a label; gtk_label_set_attributes() may be a simpler way to set
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* attributes in some cases. Be careful though; #PangoAttrList tends to
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* cause internationalization problems, unless you’re applying attributes
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* to the entire string (i.e. unless you set the range of each attribute
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* to [0, %G_MAXINT)). The reason is that specifying the start_index and
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* end_index for a #PangoAttribute requires knowledge of the exact string
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* being displayed, so translations will cause problems.
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*
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* # Selectable labels
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*
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* Labels can be made selectable with gtk_label_set_selectable().
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* Selectable labels allow the user to copy the label contents to
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* the clipboard. Only labels that contain useful-to-copy information
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* — such as error messages — should be made selectable.
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*
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* # Text layout # {#label-text-layout}
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*
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* A label can contain any number of paragraphs, but will have
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* performance problems if it contains more than a small number.
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* Paragraphs are separated by newlines or other paragraph separators
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* understood by Pango.
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*
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* Labels can automatically wrap text if you call
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* gtk_label_set_wrap().
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*
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* gtk_label_set_justify() sets how the lines in a label align
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* with one another. If you want to set how the label as a whole
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* aligns in its available space, see the #GtkWidget:halign and
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* #GtkWidget:valign properties.
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*
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* The #GtkLabel:width-chars and #GtkLabel:max-width-chars properties
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* can be used to control the size allocation of ellipsized or wrapped
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* labels. For ellipsizing labels, if either is specified (and less
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* than the actual text size), it is used as the minimum width, and the actual
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* text size is used as the natural width of the label. For wrapping labels,
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* width-chars is used as the minimum width, if specified, and max-width-chars
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* is used as the natural width. Even if max-width-chars specified, wrapping
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* labels will be rewrapped to use all of the available width.
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*
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* Note that the interpretation of #GtkLabel:width-chars and
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* #GtkLabel:max-width-chars has changed a bit with the introduction of
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* [width-for-height geometry management.][geometry-management]
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*
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* # Links
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*
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* GTK supports markup for clickable hyperlinks in addition
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* to regular Pango markup. The markup for links is borrowed from HTML,
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* using the `<a>` with “href“, “title“ and “class“ attributes. GTK renders links
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* similar to the way they appear in web browsers, with colored, underlined
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* text. The “title“ attribute is displayed as a tooltip on the link. The “class“
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* attribute is used as style class on the CSS node for the link.
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*
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* An example looks like this:
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*
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* |[<!-- language="C" -->
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* const char *text =
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* "Go to the"
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* "<a href=\"http://www.gtk.org title=\"<i>Our</i> website\">"
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* "GTK website</a> for more...";
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* GtkWidget *label = gtk_label_new (NULL);
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* gtk_label_set_markup (GTK_LABEL (label), text);
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* ]|
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*
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* It is possible to implement custom handling for links and their tooltips with
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* the #GtkLabel::activate-link signal and the gtk_label_get_current_uri() function.
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*/
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typedef struct _GtkLabelClass GtkLabelClass;
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typedef struct _GtkLabelSelectionInfo GtkLabelSelectionInfo;
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struct _GtkLabel
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{
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GtkWidget parent_instance;
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GtkLabelSelectionInfo *select_info;
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GtkWidget *mnemonic_widget;
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GtkEventController *mnemonic_controller;
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PangoAttrList *attrs;
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PangoAttrList *markup_attrs;
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PangoLayout *layout;
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GtkWidget *popup_menu;
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GMenuModel *extra_menu;
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char *label;
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char *text;
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float xalign;
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float yalign;
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guint mnemonics_visible : 1;
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guint jtype : 2;
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guint wrap : 1;
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guint use_underline : 1;
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guint ellipsize : 3;
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guint use_markup : 1;
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guint wrap_mode : 3;
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guint single_line_mode : 1;
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guint in_click : 1;
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guint track_links : 1;
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guint mnemonic_keyval;
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int width_chars;
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int max_width_chars;
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int lines;
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};
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struct _GtkLabelClass
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{
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GtkWidgetClass parent_class;
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void (* move_cursor) (GtkLabel *self,
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GtkMovementStep step,
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int count,
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gboolean extend_selection);
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void (* copy_clipboard) (GtkLabel *self);
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gboolean (*activate_link) (GtkLabel *self,
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const char *uri);
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};
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/* Notes about the handling of links:
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*
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* Links share the GtkLabelSelectionInfo struct with selectable labels.
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* There are some new fields for links. The links field contains the list
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* of GtkLabelLink structs that describe the links which are embedded in
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* the label. The active_link field points to the link under the mouse
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* pointer. For keyboard navigation, the “focus” link is determined by
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* finding the link which contains the selection_anchor position.
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* The link_clicked field is used with button press and release events
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* to ensure that pressing inside a link and releasing outside of it
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* does not activate the link.
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*
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* Links are rendered with the #GTK_STATE_FLAG_LINK/#GTK_STATE_FLAG_VISITED
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* state flags. When the mouse pointer is over a link, the pointer is changed
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* to indicate the link.
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*
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* Labels with links accept keyboard focus, and it is possible to move
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* the focus between the embedded links using Tab/Shift-Tab. The focus
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* is indicated by a focus rectangle that is drawn around the link text.
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* Pressing Enter activates the focused link, and there is a suitable
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* context menu for links that can be opened with the Menu key. Pressing
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* Control-C copies the link URI to the clipboard.
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*
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* In selectable labels with links, link functionality is only available
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* when the selection is empty.
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*/
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typedef struct
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{
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char *uri;
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char *title; /* the title attribute, used as tooltip */
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GtkCssNode *cssnode;
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||
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gboolean visited; /* get set when the link is activated; this flag
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* gets preserved over later set_markup() calls
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*/
|
||
int start; /* position of the link in the PangoLayout */
|
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int end;
|
||
} GtkLabelLink;
|
||
|
||
struct _GtkLabelSelectionInfo
|
||
{
|
||
int selection_anchor;
|
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int selection_end;
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||
GtkCssNode *selection_node;
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||
GdkContentProvider *provider;
|
||
|
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GtkLabelLink *links;
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||
guint n_links;
|
||
GtkLabelLink *active_link;
|
||
GtkLabelLink *context_link;
|
||
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GtkGesture *drag_gesture;
|
||
GtkGesture *click_gesture;
|
||
GtkEventController *motion_controller;
|
||
GtkEventController *focus_controller;
|
||
|
||
int drag_start_x;
|
||
int drag_start_y;
|
||
|
||
guint in_drag : 1;
|
||
guint select_words : 1;
|
||
guint selectable : 1;
|
||
guint link_clicked : 1;
|
||
};
|
||
|
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enum {
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MOVE_CURSOR,
|
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COPY_CLIPBOARD,
|
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ACTIVATE_LINK,
|
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ACTIVATE_CURRENT_LINK,
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LAST_SIGNAL
|
||
};
|
||
|
||
enum {
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PROP_0,
|
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PROP_LABEL,
|
||
PROP_ATTRIBUTES,
|
||
PROP_USE_MARKUP,
|
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PROP_USE_UNDERLINE,
|
||
PROP_JUSTIFY,
|
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PROP_WRAP,
|
||
PROP_WRAP_MODE,
|
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PROP_SELECTABLE,
|
||
PROP_MNEMONIC_KEYVAL,
|
||
PROP_MNEMONIC_WIDGET,
|
||
PROP_ELLIPSIZE,
|
||
PROP_WIDTH_CHARS,
|
||
PROP_SINGLE_LINE_MODE,
|
||
PROP_MAX_WIDTH_CHARS,
|
||
PROP_LINES,
|
||
PROP_XALIGN,
|
||
PROP_YALIGN,
|
||
PROP_EXTRA_MENU,
|
||
NUM_PROPERTIES
|
||
};
|
||
|
||
static GParamSpec *label_props[NUM_PROPERTIES] = { NULL, };
|
||
|
||
static guint signals[LAST_SIGNAL] = { 0 };
|
||
|
||
static GQuark quark_mnemonics_visible_connected;
|
||
|
||
static void gtk_label_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gtk_label_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gtk_label_finalize (GObject *object);
|
||
static void gtk_label_dispose (GObject *object);
|
||
static void gtk_label_size_allocate (GtkWidget *widget,
|
||
int width,
|
||
int height,
|
||
int baseline);
|
||
static void gtk_label_state_flags_changed (GtkWidget *widget,
|
||
GtkStateFlags prev_state);
|
||
static void gtk_label_css_changed (GtkWidget *widget,
|
||
GtkCssStyleChange *change);
|
||
static void gtk_label_snapshot (GtkWidget *widget,
|
||
GtkSnapshot *snapshot);
|
||
static gboolean gtk_label_focus (GtkWidget *widget,
|
||
GtkDirectionType direction);
|
||
|
||
static void gtk_label_unrealize (GtkWidget *widget);
|
||
|
||
static void gtk_label_motion (GtkEventControllerMotion *controller,
|
||
double x,
|
||
double y,
|
||
gpointer data);
|
||
static void gtk_label_leave (GtkEventControllerMotion *controller,
|
||
gpointer data);
|
||
|
||
static gboolean gtk_label_grab_focus (GtkWidget *widget);
|
||
|
||
static gboolean gtk_label_query_tooltip (GtkWidget *widget,
|
||
int x,
|
||
int y,
|
||
gboolean keyboard_tip,
|
||
GtkTooltip *tooltip);
|
||
|
||
static void gtk_label_set_text_internal (GtkLabel *self,
|
||
char *str);
|
||
static gboolean gtk_label_set_label_internal (GtkLabel *self,
|
||
const char *str);
|
||
static gboolean gtk_label_set_use_markup_internal (GtkLabel *self,
|
||
gboolean val);
|
||
static gboolean gtk_label_set_use_underline_internal (GtkLabel *self,
|
||
gboolean val);
|
||
static void gtk_label_set_markup_internal (GtkLabel *self,
|
||
const char *str,
|
||
gboolean with_uline);
|
||
static void gtk_label_recalculate (GtkLabel *self);
|
||
static void gtk_label_root (GtkWidget *widget);
|
||
static void gtk_label_unroot (GtkWidget *widget);
|
||
static void gtk_label_popup_menu (GtkWidget *widget,
|
||
const char *action_name,
|
||
GVariant *parameters);
|
||
static void gtk_label_do_popup (GtkLabel *self,
|
||
double x,
|
||
double y);
|
||
|
||
static void gtk_label_ensure_select_info (GtkLabel *self);
|
||
static void gtk_label_clear_select_info (GtkLabel *self);
|
||
static void gtk_label_update_cursor (GtkLabel *self);
|
||
static void gtk_label_clear_layout (GtkLabel *self);
|
||
static void gtk_label_ensure_layout (GtkLabel *self);
|
||
static void gtk_label_select_region_index (GtkLabel *self,
|
||
int anchor_index,
|
||
int end_index);
|
||
|
||
static void gtk_label_update_active_link (GtkWidget *widget,
|
||
double x,
|
||
double y);
|
||
|
||
static gboolean gtk_label_mnemonic_activate (GtkWidget *widget,
|
||
gboolean group_cycling);
|
||
static void gtk_label_setup_mnemonic (GtkLabel *self);
|
||
|
||
static void gtk_label_buildable_interface_init (GtkBuildableIface *iface);
|
||
static gboolean gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const char *tagname,
|
||
GtkBuildableParser *parser,
|
||
gpointer *data);
|
||
|
||
static void gtk_label_buildable_custom_finished (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const char *tagname,
|
||
gpointer user_data);
|
||
|
||
/* For selectable labels: */
|
||
static void gtk_label_move_cursor (GtkLabel *self,
|
||
GtkMovementStep step,
|
||
int count,
|
||
gboolean extend_selection);
|
||
static void gtk_label_copy_clipboard (GtkLabel *self);
|
||
static void gtk_label_select_all (GtkLabel *self);
|
||
static int gtk_label_move_forward_word (GtkLabel *self,
|
||
int start);
|
||
static int gtk_label_move_backward_word (GtkLabel *self,
|
||
int start);
|
||
|
||
/* For links: */
|
||
static void gtk_label_clear_links (GtkLabel *self);
|
||
static gboolean gtk_label_activate_link (GtkLabel *self,
|
||
const char *uri);
|
||
static void gtk_label_activate_current_link (GtkLabel *self);
|
||
static void emit_activate_link (GtkLabel *self,
|
||
GtkLabelLink *link);
|
||
|
||
/* Event controller callbacks */
|
||
static void gtk_label_click_gesture_pressed (GtkGestureClick *gesture,
|
||
int n_press,
|
||
double x,
|
||
double y,
|
||
GtkLabel *self);
|
||
static void gtk_label_click_gesture_released (GtkGestureClick *gesture,
|
||
int n_press,
|
||
double x,
|
||
double y,
|
||
GtkLabel *self);
|
||
static void gtk_label_drag_gesture_begin (GtkGestureDrag *gesture,
|
||
double start_x,
|
||
double start_y,
|
||
GtkLabel *self);
|
||
static void gtk_label_drag_gesture_update (GtkGestureDrag *gesture,
|
||
double offset_x,
|
||
double offset_y,
|
||
GtkLabel *self);
|
||
|
||
/* Actions */
|
||
|
||
static void gtk_label_activate_clipboard_copy (GtkWidget *self,
|
||
const char *name,
|
||
GVariant *parameter);
|
||
static void gtk_label_activate_selection_select_all (GtkWidget *self,
|
||
const char *name,
|
||
GVariant *parameter);
|
||
static void gtk_label_activate_link_open (GtkWidget *self,
|
||
const char *name,
|
||
GVariant *parameter);
|
||
static void gtk_label_activate_link_copy (GtkWidget *self,
|
||
const char *name,
|
||
GVariant *parameter);
|
||
static void gtk_label_nop (GtkWidget *self,
|
||
const char *name,
|
||
GVariant *parameter);
|
||
|
||
static void gtk_label_update_actions (GtkLabel *self);
|
||
|
||
static GtkSizeRequestMode gtk_label_get_request_mode (GtkWidget *widget);
|
||
static void gtk_label_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline);
|
||
|
||
|
||
|
||
static GtkBuildableIface *buildable_parent_iface = NULL;
|
||
|
||
G_DEFINE_TYPE_WITH_CODE (GtkLabel, gtk_label, GTK_TYPE_WIDGET,
|
||
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
|
||
gtk_label_buildable_interface_init))
|
||
|
||
static void
|
||
add_move_binding (GtkWidgetClass *widget_class,
|
||
guint keyval,
|
||
guint modmask,
|
||
GtkMovementStep step,
|
||
int count)
|
||
{
|
||
g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0);
|
||
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
keyval, modmask,
|
||
"move-cursor",
|
||
"(iib)", step, count, FALSE);
|
||
|
||
/* Selection-extending version */
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
keyval, modmask | GDK_SHIFT_MASK,
|
||
"move-cursor",
|
||
"(iib)", step, count, TRUE);
|
||
}
|
||
|
||
static void
|
||
gtk_label_class_init (GtkLabelClass *class)
|
||
{
|
||
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
|
||
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
|
||
|
||
gobject_class->set_property = gtk_label_set_property;
|
||
gobject_class->get_property = gtk_label_get_property;
|
||
gobject_class->finalize = gtk_label_finalize;
|
||
gobject_class->dispose = gtk_label_dispose;
|
||
|
||
widget_class->size_allocate = gtk_label_size_allocate;
|
||
widget_class->state_flags_changed = gtk_label_state_flags_changed;
|
||
widget_class->css_changed = gtk_label_css_changed;
|
||
widget_class->query_tooltip = gtk_label_query_tooltip;
|
||
widget_class->snapshot = gtk_label_snapshot;
|
||
widget_class->unrealize = gtk_label_unrealize;
|
||
widget_class->root = gtk_label_root;
|
||
widget_class->unroot = gtk_label_unroot;
|
||
widget_class->mnemonic_activate = gtk_label_mnemonic_activate;
|
||
widget_class->grab_focus = gtk_label_grab_focus;
|
||
widget_class->focus = gtk_label_focus;
|
||
widget_class->get_request_mode = gtk_label_get_request_mode;
|
||
widget_class->measure = gtk_label_measure;
|
||
|
||
class->move_cursor = gtk_label_move_cursor;
|
||
class->copy_clipboard = gtk_label_copy_clipboard;
|
||
class->activate_link = gtk_label_activate_link;
|
||
|
||
/**
|
||
* GtkLabel::move-cursor:
|
||
* @entry: the object which received the signal
|
||
* @step: the granularity of the move, as a #GtkMovementStep
|
||
* @count: the number of @step units to move
|
||
* @extend_selection: %TRUE if the move should extend the selection
|
||
*
|
||
* The ::move-cursor signal is a
|
||
* [keybinding signal][GtkSignalAction]
|
||
* which gets emitted when the user initiates a cursor movement.
|
||
* If the cursor is not visible in @entry, this signal causes
|
||
* the viewport to be moved instead.
|
||
*
|
||
* Applications should not connect to it, but may emit it with
|
||
* g_signal_emit_by_name() if they need to control the cursor
|
||
* programmatically.
|
||
*
|
||
* The default bindings for this signal come in two variants,
|
||
* the variant with the Shift modifier extends the selection,
|
||
* the variant without the Shift modifier does not.
|
||
* There are too many key combinations to list them all here.
|
||
* - Arrow keys move by individual characters/lines
|
||
* - Ctrl-arrow key combinations move by words/paragraphs
|
||
* - Home/End keys move to the ends of the buffer
|
||
*/
|
||
signals[MOVE_CURSOR] =
|
||
g_signal_new (I_("move-cursor"),
|
||
G_OBJECT_CLASS_TYPE (gobject_class),
|
||
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
|
||
G_STRUCT_OFFSET (GtkLabelClass, move_cursor),
|
||
NULL, NULL,
|
||
_gtk_marshal_VOID__ENUM_INT_BOOLEAN,
|
||
G_TYPE_NONE, 3,
|
||
GTK_TYPE_MOVEMENT_STEP,
|
||
G_TYPE_INT,
|
||
G_TYPE_BOOLEAN);
|
||
|
||
/**
|
||
* GtkLabel::copy-clipboard:
|
||
* @self: the object which received the signal
|
||
*
|
||
* The ::copy-clipboard signal is a
|
||
* [keybinding signal][GtkSignalAction]
|
||
* which gets emitted to copy the selection to the clipboard.
|
||
*
|
||
* The default binding for this signal is Ctrl-c.
|
||
*/
|
||
signals[COPY_CLIPBOARD] =
|
||
g_signal_new (I_("copy-clipboard"),
|
||
G_OBJECT_CLASS_TYPE (gobject_class),
|
||
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
|
||
G_STRUCT_OFFSET (GtkLabelClass, copy_clipboard),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 0);
|
||
|
||
/**
|
||
* GtkLabel::activate-current-link:
|
||
* @self: The label on which the signal was emitted
|
||
*
|
||
* A [keybinding signal][GtkSignalAction]
|
||
* which gets emitted when the user activates a link in the label.
|
||
*
|
||
* Applications may also emit the signal with g_signal_emit_by_name()
|
||
* if they need to control activation of URIs programmatically.
|
||
*
|
||
* The default bindings for this signal are all forms of the Enter key.
|
||
*/
|
||
signals[ACTIVATE_CURRENT_LINK] =
|
||
g_signal_new_class_handler (I_("activate-current-link"),
|
||
G_TYPE_FROM_CLASS (gobject_class),
|
||
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
|
||
G_CALLBACK (gtk_label_activate_current_link),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 0);
|
||
|
||
/**
|
||
* GtkLabel::activate-link:
|
||
* @self: The label on which the signal was emitted
|
||
* @uri: the URI that is activated
|
||
*
|
||
* The signal which gets emitted to activate a URI.
|
||
* Applications may connect to it to override the default behaviour,
|
||
* which is to call gtk_show_uri().
|
||
*
|
||
* Returns: %TRUE if the link has been activated
|
||
*/
|
||
signals[ACTIVATE_LINK] =
|
||
g_signal_new (I_("activate-link"),
|
||
G_TYPE_FROM_CLASS (gobject_class),
|
||
G_SIGNAL_RUN_LAST,
|
||
G_STRUCT_OFFSET (GtkLabelClass, activate_link),
|
||
_gtk_boolean_handled_accumulator, NULL,
|
||
_gtk_marshal_BOOLEAN__STRING,
|
||
G_TYPE_BOOLEAN, 1, G_TYPE_STRING);
|
||
|
||
/**
|
||
* GtkLabel:label:
|
||
*
|
||
* The contents of the label.
|
||
*
|
||
* If the string contains [Pango XML markup][PangoMarkupFormat], you will
|
||
* have to set the #GtkLabel:use-markup property to %TRUE in order for the
|
||
* label to display the markup attributes. See also gtk_label_set_markup()
|
||
* for a convenience function that sets both this property and the
|
||
* #GtkLabel:use-markup property at the same time.
|
||
*
|
||
* If the string contains underlines acting as mnemonics, you will have to
|
||
* set the #GtkLabel:use-underline property to %TRUE in order for the label
|
||
* to display them.
|
||
*/
|
||
label_props[PROP_LABEL] =
|
||
g_param_spec_string ("label",
|
||
P_("Label"),
|
||
P_("The text of the label"),
|
||
"",
|
||
GTK_PARAM_READWRITE);
|
||
|
||
label_props[PROP_ATTRIBUTES] =
|
||
g_param_spec_boxed ("attributes",
|
||
P_("Attributes"),
|
||
P_("A list of style attributes to apply to the text of the label"),
|
||
PANGO_TYPE_ATTR_LIST,
|
||
GTK_PARAM_READWRITE);
|
||
|
||
label_props[PROP_USE_MARKUP] =
|
||
g_param_spec_boolean ("use-markup",
|
||
P_("Use markup"),
|
||
P_("The text of the label includes XML markup. See pango_parse_markup()"),
|
||
FALSE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
label_props[PROP_USE_UNDERLINE] =
|
||
g_param_spec_boolean ("use-underline",
|
||
P_("Use underline"),
|
||
P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
|
||
FALSE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
label_props[PROP_JUSTIFY] =
|
||
g_param_spec_enum ("justify",
|
||
P_("Justification"),
|
||
P_("The alignment of the lines in the text of the label relative to each other. This does NOT affect the alignment of the label within its allocation. See GtkLabel:xalign for that"),
|
||
GTK_TYPE_JUSTIFICATION,
|
||
GTK_JUSTIFY_LEFT,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:xalign:
|
||
*
|
||
* The xalign property determines the horizontal alignment of the label text
|
||
* inside the labels size allocation. Compare this to #GtkWidget:halign,
|
||
* which determines how the labels size allocation is positioned in the
|
||
* space available for the label.
|
||
*/
|
||
label_props[PROP_XALIGN] =
|
||
g_param_spec_float ("xalign",
|
||
P_("X align"),
|
||
P_("The horizontal alignment, from 0 (left) to 1 (right). Reversed for RTL layouts."),
|
||
0.0, 1.0,
|
||
0.5,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:yalign:
|
||
*
|
||
* The yalign property determines the vertical alignment of the label text
|
||
* inside the labels size allocation. Compare this to #GtkWidget:valign,
|
||
* which determines how the labels size allocation is positioned in the
|
||
* space available for the label.
|
||
*/
|
||
label_props[PROP_YALIGN] =
|
||
g_param_spec_float ("yalign",
|
||
P_("Y align"),
|
||
P_("The vertical alignment, from 0 (top) to 1 (bottom)"),
|
||
0.0, 1.0,
|
||
0.5,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
label_props[PROP_WRAP] =
|
||
g_param_spec_boolean ("wrap",
|
||
P_("Line wrap"),
|
||
P_("If set, wrap lines if the text becomes too wide"),
|
||
FALSE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:wrap-mode:
|
||
*
|
||
* If line wrapping is on (see the #GtkLabel:wrap property) this controls
|
||
* how the line wrapping is done. The default is %PANGO_WRAP_WORD, which
|
||
* means wrap on word boundaries.
|
||
*/
|
||
label_props[PROP_WRAP_MODE] =
|
||
g_param_spec_enum ("wrap-mode",
|
||
P_("Line wrap mode"),
|
||
P_("If wrap is set, controls how linewrapping is done"),
|
||
PANGO_TYPE_WRAP_MODE,
|
||
PANGO_WRAP_WORD,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
label_props[PROP_SELECTABLE] =
|
||
g_param_spec_boolean ("selectable",
|
||
P_("Selectable"),
|
||
P_("Whether the label text can be selected with the mouse"),
|
||
FALSE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
label_props[PROP_MNEMONIC_KEYVAL] =
|
||
g_param_spec_uint ("mnemonic-keyval",
|
||
P_("Mnemonic key"),
|
||
P_("The mnemonic accelerator key for this label"),
|
||
0, G_MAXUINT,
|
||
GDK_KEY_VoidSymbol,
|
||
GTK_PARAM_READABLE);
|
||
|
||
label_props[PROP_MNEMONIC_WIDGET] =
|
||
g_param_spec_object ("mnemonic-widget",
|
||
P_("Mnemonic widget"),
|
||
P_("The widget to be activated when the label’s mnemonic key is pressed"),
|
||
GTK_TYPE_WIDGET,
|
||
GTK_PARAM_READWRITE);
|
||
|
||
/**
|
||
* GtkLabel:ellipsize:
|
||
*
|
||
* The preferred place to ellipsize the string, if the label does
|
||
* not have enough room to display the entire string, specified as a
|
||
* #PangoEllipsizeMode.
|
||
*
|
||
* Note that setting this property to a value other than
|
||
* %PANGO_ELLIPSIZE_NONE has the side-effect that the label requests
|
||
* only enough space to display the ellipsis "...". In particular, this
|
||
* means that ellipsizing labels do not work well in notebook tabs, unless
|
||
* the #GtkNotebook tab-expand child property is set to %TRUE. Other ways
|
||
* to set a label's width are gtk_widget_set_size_request() and
|
||
* gtk_label_set_width_chars().
|
||
*/
|
||
label_props[PROP_ELLIPSIZE] =
|
||
g_param_spec_enum ("ellipsize",
|
||
P_("Ellipsize"),
|
||
P_("The preferred place to ellipsize the string, if the label does not have enough room to display the entire string"),
|
||
PANGO_TYPE_ELLIPSIZE_MODE,
|
||
PANGO_ELLIPSIZE_NONE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:width-chars:
|
||
*
|
||
* The desired width of the label, in characters. If this property is set to
|
||
* -1, the width will be calculated automatically.
|
||
*
|
||
* See the section on [text layout][label-text-layout]
|
||
* for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
|
||
* determine the width of ellipsized and wrapped labels.
|
||
**/
|
||
label_props[PROP_WIDTH_CHARS] =
|
||
g_param_spec_int ("width-chars",
|
||
P_("Width In Characters"),
|
||
P_("The desired width of the label, in characters"),
|
||
-1, G_MAXINT,
|
||
-1,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:single-line-mode:
|
||
*
|
||
* Whether the label is in single line mode. In single line mode,
|
||
* the height of the label does not depend on the actual text, it
|
||
* is always set to ascent + descent of the font. This can be an
|
||
* advantage in situations where resizing the label because of text
|
||
* changes would be distracting, e.g. in a statusbar.
|
||
**/
|
||
label_props[PROP_SINGLE_LINE_MODE] =
|
||
g_param_spec_boolean ("single-line-mode",
|
||
P_("Single Line Mode"),
|
||
P_("Whether the label is in single line mode"),
|
||
FALSE,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:max-width-chars:
|
||
*
|
||
* The desired maximum width of the label, in characters. If this property
|
||
* is set to -1, the width will be calculated automatically.
|
||
*
|
||
* See the section on [text layout][label-text-layout]
|
||
* for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
|
||
* determine the width of ellipsized and wrapped labels.
|
||
**/
|
||
label_props[PROP_MAX_WIDTH_CHARS] =
|
||
g_param_spec_int ("max-width-chars",
|
||
P_("Maximum Width In Characters"),
|
||
P_("The desired maximum width of the label, in characters"),
|
||
-1, G_MAXINT,
|
||
-1,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:lines:
|
||
*
|
||
* The number of lines to which an ellipsized, wrapping label
|
||
* should be limited. This property has no effect if the
|
||
* label is not wrapping or ellipsized. Set this property to
|
||
* -1 if you don't want to limit the number of lines.
|
||
*/
|
||
label_props[PROP_LINES] =
|
||
g_param_spec_int ("lines",
|
||
P_("Number of lines"),
|
||
P_("The desired number of lines, when ellipsizing a wrapping label"),
|
||
-1, G_MAXINT,
|
||
-1,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
/**
|
||
* GtkLabel:extra-menu:
|
||
*
|
||
* A menu model whose contents will be appended to
|
||
* the context menu.
|
||
*/
|
||
label_props[PROP_EXTRA_MENU] =
|
||
g_param_spec_object ("extra-menu",
|
||
P_("Extra menu"),
|
||
P_("Menu model to append to the context menu"),
|
||
G_TYPE_MENU_MODEL,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
g_object_class_install_properties (gobject_class, NUM_PROPERTIES, label_props);
|
||
|
||
/**
|
||
* GtkLabel|menu.popup:
|
||
*
|
||
* Opens the context menu.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "menu.popup", NULL, gtk_label_popup_menu);
|
||
|
||
/*
|
||
* Key bindings
|
||
*/
|
||
|
||
gtk_widget_class_add_binding_action (widget_class,
|
||
GDK_KEY_F10, GDK_SHIFT_MASK,
|
||
"menu.popup",
|
||
NULL);
|
||
gtk_widget_class_add_binding_action (widget_class,
|
||
GDK_KEY_Menu, 0,
|
||
"menu.popup",
|
||
NULL);
|
||
|
||
/* Moving the insertion point */
|
||
add_move_binding (widget_class, GDK_KEY_Right, 0,
|
||
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_Left, 0,
|
||
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_Right, 0,
|
||
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_Left, 0,
|
||
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_f, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_b, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_Right, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_WORDS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_Left, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_WORDS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_WORDS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_WORDS, -1);
|
||
|
||
/* select all */
|
||
gtk_widget_class_add_binding (widget_class,
|
||
GDK_KEY_a, GDK_CONTROL_MASK,
|
||
(GtkShortcutFunc) gtk_label_select_all,
|
||
NULL);
|
||
gtk_widget_class_add_binding (widget_class,
|
||
GDK_KEY_slash, GDK_CONTROL_MASK,
|
||
(GtkShortcutFunc) gtk_label_select_all,
|
||
NULL);
|
||
|
||
/* unselect all */
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
GDK_KEY_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
|
||
"move-cursor",
|
||
"(iib)", GTK_MOVEMENT_PARAGRAPH_ENDS, 0, FALSE);
|
||
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
GDK_KEY_backslash, GDK_CONTROL_MASK,
|
||
"move-cursor",
|
||
"(iib)", GTK_MOVEMENT_PARAGRAPH_ENDS, 0, FALSE);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_f, GDK_ALT_MASK,
|
||
GTK_MOVEMENT_WORDS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_b, GDK_ALT_MASK,
|
||
GTK_MOVEMENT_WORDS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_Home, 0,
|
||
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_End, 0,
|
||
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_Home, 0,
|
||
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_End, 0,
|
||
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_Home, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_BUFFER_ENDS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_End, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_BUFFER_ENDS, 1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_BUFFER_ENDS, -1);
|
||
|
||
add_move_binding (widget_class, GDK_KEY_KP_End, GDK_CONTROL_MASK,
|
||
GTK_MOVEMENT_BUFFER_ENDS, 1);
|
||
|
||
/* copy */
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
GDK_KEY_c, GDK_CONTROL_MASK,
|
||
"copy-clipboard",
|
||
NULL);
|
||
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
GDK_KEY_Return, 0,
|
||
"activate-current-link",
|
||
NULL);
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
GDK_KEY_ISO_Enter, 0,
|
||
"activate-current-link",
|
||
NULL);
|
||
gtk_widget_class_add_binding_signal (widget_class,
|
||
GDK_KEY_KP_Enter, 0,
|
||
"activate-current-link",
|
||
NULL);
|
||
|
||
gtk_widget_class_set_css_name (widget_class, I_("label"));
|
||
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_LABEL);
|
||
|
||
quark_mnemonics_visible_connected = g_quark_from_static_string ("gtk-label-mnemonics-visible-connected");
|
||
|
||
/**
|
||
* GtkLabel|clipboard.cut:
|
||
*
|
||
* Doesn't do anything, since text in labels can't be deleted.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "clipboard.cut", NULL,
|
||
gtk_label_nop);
|
||
|
||
/**
|
||
* GtkLabel|clipboard.copy:
|
||
*
|
||
* Copies the text to the clipboard.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL,
|
||
gtk_label_activate_clipboard_copy);
|
||
|
||
/**
|
||
* GtkLabel|clipboard.paste:
|
||
*
|
||
* Doesn't do anything, since text in labels can't be edited.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "clipboard.paste", NULL,
|
||
gtk_label_nop);
|
||
|
||
/**
|
||
* GtkLabel|selection.delete:
|
||
*
|
||
* Doesn't do anything, since text in labels can't be deleted.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "selection.delete", NULL,
|
||
gtk_label_nop);
|
||
|
||
/**
|
||
* GtkLabel|selection.select-all:
|
||
*
|
||
* Selects all of the text, if the label allows selection.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "selection.select-all", NULL,
|
||
gtk_label_activate_selection_select_all);
|
||
|
||
/**
|
||
* GtkLabel|link.open:
|
||
*
|
||
* Opens the link, when activated on a link inside the label.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "link.open", NULL,
|
||
gtk_label_activate_link_open);
|
||
|
||
/**
|
||
* GtkLabel|link.copy:
|
||
*
|
||
* Copies the link to the clipboard, when activated on a link
|
||
* inside the label.
|
||
*/
|
||
gtk_widget_class_install_action (widget_class, "link.copy", NULL,
|
||
gtk_label_activate_link_copy);
|
||
}
|
||
|
||
static void
|
||
gtk_label_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (object);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_LABEL:
|
||
gtk_label_set_label (self, g_value_get_string (value));
|
||
break;
|
||
case PROP_ATTRIBUTES:
|
||
gtk_label_set_attributes (self, g_value_get_boxed (value));
|
||
break;
|
||
case PROP_USE_MARKUP:
|
||
gtk_label_set_use_markup (self, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_USE_UNDERLINE:
|
||
gtk_label_set_use_underline (self, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_JUSTIFY:
|
||
gtk_label_set_justify (self, g_value_get_enum (value));
|
||
break;
|
||
case PROP_WRAP:
|
||
gtk_label_set_wrap (self, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_WRAP_MODE:
|
||
gtk_label_set_wrap_mode (self, g_value_get_enum (value));
|
||
break;
|
||
case PROP_SELECTABLE:
|
||
gtk_label_set_selectable (self, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_MNEMONIC_WIDGET:
|
||
gtk_label_set_mnemonic_widget (self, (GtkWidget*) g_value_get_object (value));
|
||
break;
|
||
case PROP_ELLIPSIZE:
|
||
gtk_label_set_ellipsize (self, g_value_get_enum (value));
|
||
break;
|
||
case PROP_WIDTH_CHARS:
|
||
gtk_label_set_width_chars (self, g_value_get_int (value));
|
||
break;
|
||
case PROP_SINGLE_LINE_MODE:
|
||
gtk_label_set_single_line_mode (self, g_value_get_boolean (value));
|
||
break;
|
||
case PROP_MAX_WIDTH_CHARS:
|
||
gtk_label_set_max_width_chars (self, g_value_get_int (value));
|
||
break;
|
||
case PROP_LINES:
|
||
gtk_label_set_lines (self, g_value_get_int (value));
|
||
break;
|
||
case PROP_XALIGN:
|
||
gtk_label_set_xalign (self, g_value_get_float (value));
|
||
break;
|
||
case PROP_YALIGN:
|
||
gtk_label_set_yalign (self, g_value_get_float (value));
|
||
break;
|
||
case PROP_EXTRA_MENU:
|
||
gtk_label_set_extra_menu (self, g_value_get_object (value));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (object);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_LABEL:
|
||
g_value_set_string (value, self->label);
|
||
break;
|
||
case PROP_ATTRIBUTES:
|
||
g_value_set_boxed (value, self->attrs);
|
||
break;
|
||
case PROP_USE_MARKUP:
|
||
g_value_set_boolean (value, self->use_markup);
|
||
break;
|
||
case PROP_USE_UNDERLINE:
|
||
g_value_set_boolean (value, self->use_underline);
|
||
break;
|
||
case PROP_JUSTIFY:
|
||
g_value_set_enum (value, self->jtype);
|
||
break;
|
||
case PROP_WRAP:
|
||
g_value_set_boolean (value, self->wrap);
|
||
break;
|
||
case PROP_WRAP_MODE:
|
||
g_value_set_enum (value, self->wrap_mode);
|
||
break;
|
||
case PROP_SELECTABLE:
|
||
g_value_set_boolean (value, gtk_label_get_selectable (self));
|
||
break;
|
||
case PROP_MNEMONIC_KEYVAL:
|
||
g_value_set_uint (value, self->mnemonic_keyval);
|
||
break;
|
||
case PROP_MNEMONIC_WIDGET:
|
||
g_value_set_object (value, (GObject*) self->mnemonic_widget);
|
||
break;
|
||
case PROP_ELLIPSIZE:
|
||
g_value_set_enum (value, self->ellipsize);
|
||
break;
|
||
case PROP_WIDTH_CHARS:
|
||
g_value_set_int (value, gtk_label_get_width_chars (self));
|
||
break;
|
||
case PROP_SINGLE_LINE_MODE:
|
||
g_value_set_boolean (value, gtk_label_get_single_line_mode (self));
|
||
break;
|
||
case PROP_MAX_WIDTH_CHARS:
|
||
g_value_set_int (value, gtk_label_get_max_width_chars (self));
|
||
break;
|
||
case PROP_LINES:
|
||
g_value_set_int (value, gtk_label_get_lines (self));
|
||
break;
|
||
case PROP_XALIGN:
|
||
g_value_set_float (value, gtk_label_get_xalign (self));
|
||
break;
|
||
case PROP_YALIGN:
|
||
g_value_set_float (value, gtk_label_get_yalign (self));
|
||
break;
|
||
case PROP_EXTRA_MENU:
|
||
g_value_set_object (value, gtk_label_get_extra_menu (self));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_init (GtkLabel *self)
|
||
{
|
||
self->width_chars = -1;
|
||
self->max_width_chars = -1;
|
||
self->label = g_strdup ("");
|
||
self->lines = -1;
|
||
|
||
self->xalign = 0.5;
|
||
self->yalign = 0.5;
|
||
|
||
self->jtype = GTK_JUSTIFY_LEFT;
|
||
self->wrap = FALSE;
|
||
self->wrap_mode = PANGO_WRAP_WORD;
|
||
self->ellipsize = PANGO_ELLIPSIZE_NONE;
|
||
|
||
self->use_underline = FALSE;
|
||
self->use_markup = FALSE;
|
||
|
||
self->mnemonic_keyval = GDK_KEY_VoidSymbol;
|
||
self->layout = NULL;
|
||
self->text = g_strdup ("");
|
||
self->attrs = NULL;
|
||
|
||
self->mnemonic_widget = NULL;
|
||
|
||
self->mnemonics_visible = FALSE;
|
||
}
|
||
|
||
|
||
static void
|
||
gtk_label_buildable_interface_init (GtkBuildableIface *iface)
|
||
{
|
||
buildable_parent_iface = g_type_interface_peek_parent (iface);
|
||
|
||
iface->custom_tag_start = gtk_label_buildable_custom_tag_start;
|
||
iface->custom_finished = gtk_label_buildable_custom_finished;
|
||
}
|
||
|
||
static const GtkBuildableParser pango_parser =
|
||
{
|
||
gtk_pango_attribute_start_element,
|
||
};
|
||
|
||
static gboolean
|
||
gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const char *tagname,
|
||
GtkBuildableParser *parser,
|
||
gpointer *data)
|
||
{
|
||
if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
|
||
tagname, parser, data))
|
||
return TRUE;
|
||
|
||
if (strcmp (tagname, "attributes") == 0)
|
||
{
|
||
GtkPangoAttributeParserData *parser_data;
|
||
|
||
parser_data = g_slice_new0 (GtkPangoAttributeParserData);
|
||
parser_data->builder = g_object_ref (builder);
|
||
parser_data->object = (GObject *) g_object_ref (buildable);
|
||
*parser = pango_parser;
|
||
*data = parser_data;
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_label_buildable_custom_finished (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const char *tagname,
|
||
gpointer user_data)
|
||
{
|
||
GtkPangoAttributeParserData *data = user_data;
|
||
|
||
buildable_parent_iface->custom_finished (buildable, builder, child,
|
||
tagname, user_data);
|
||
|
||
if (strcmp (tagname, "attributes") == 0)
|
||
{
|
||
if (data->attrs)
|
||
{
|
||
gtk_label_set_attributes (GTK_LABEL (buildable), data->attrs);
|
||
pango_attr_list_unref (data->attrs);
|
||
}
|
||
|
||
g_object_unref (data->object);
|
||
g_object_unref (data->builder);
|
||
g_slice_free (GtkPangoAttributeParserData, data);
|
||
}
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_label_new:
|
||
* @str: (nullable): The text of the label
|
||
*
|
||
* Creates a new label with the given text inside it. You can
|
||
* pass %NULL to get an empty label widget.
|
||
*
|
||
* Returns: the new #GtkLabel
|
||
**/
|
||
GtkWidget*
|
||
gtk_label_new (const char *str)
|
||
{
|
||
GtkLabel *self;
|
||
|
||
self = g_object_new (GTK_TYPE_LABEL, NULL);
|
||
|
||
if (str && *str)
|
||
gtk_label_set_text (self, str);
|
||
|
||
return GTK_WIDGET (self);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_new_with_mnemonic:
|
||
* @str: (nullable): The text of the label, with an underscore in front of the
|
||
* mnemonic character
|
||
*
|
||
* Creates a new #GtkLabel, containing the text in @str.
|
||
*
|
||
* If characters in @str are preceded by an underscore, they are
|
||
* underlined. If you need a literal underscore character in a label, use
|
||
* '__' (two underscores). The first underlined character represents a
|
||
* keyboard accelerator called a mnemonic. The mnemonic key can be used
|
||
* to activate another widget, chosen automatically, or explicitly using
|
||
* gtk_label_set_mnemonic_widget().
|
||
*
|
||
* If gtk_label_set_mnemonic_widget() is not called, then the first
|
||
* activatable ancestor of the #GtkLabel will be chosen as the mnemonic
|
||
* widget. For instance, if the label is inside a button or menu item,
|
||
* the button or menu item will automatically become the mnemonic widget
|
||
* and be activated by the mnemonic.
|
||
*
|
||
* Returns: the new #GtkLabel
|
||
**/
|
||
GtkWidget*
|
||
gtk_label_new_with_mnemonic (const char *str)
|
||
{
|
||
GtkLabel *self;
|
||
|
||
self = g_object_new (GTK_TYPE_LABEL, NULL);
|
||
|
||
if (str && *str)
|
||
gtk_label_set_text_with_mnemonic (self, str);
|
||
|
||
return GTK_WIDGET (self);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_mnemonic_activate (GtkWidget *widget,
|
||
gboolean group_cycling)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkWidget *parent;
|
||
|
||
if (self->mnemonic_widget)
|
||
return gtk_widget_mnemonic_activate (self->mnemonic_widget, group_cycling);
|
||
|
||
/* Try to find the widget to activate by traversing the
|
||
* widget's ancestry.
|
||
*/
|
||
parent = gtk_widget_get_parent (widget);
|
||
|
||
if (GTK_IS_NOTEBOOK (parent))
|
||
return FALSE;
|
||
|
||
while (parent)
|
||
{
|
||
if (gtk_widget_get_can_focus (parent) ||
|
||
(!group_cycling && GTK_WIDGET_GET_CLASS (parent)->activate_signal) ||
|
||
GTK_IS_NOTEBOOK (gtk_widget_get_parent (parent)))
|
||
return gtk_widget_mnemonic_activate (parent, group_cycling);
|
||
parent = gtk_widget_get_parent (parent);
|
||
}
|
||
|
||
/* barf if there was nothing to activate */
|
||
g_warning ("Couldn't find a target for a mnemonic activation.");
|
||
gtk_widget_error_bell (widget);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
label_mnemonics_visible_changed (GtkWidget *widget,
|
||
GParamSpec *pspec,
|
||
gpointer data)
|
||
{
|
||
gboolean visible;
|
||
|
||
g_object_get (widget, "mnemonics-visible", &visible, NULL);
|
||
_gtk_label_mnemonics_visible_apply_recursively (widget, visible);
|
||
}
|
||
|
||
static void
|
||
gtk_label_setup_mnemonic (GtkLabel *self)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
GtkShortcut *shortcut;
|
||
GtkNative *native;
|
||
gboolean connected;
|
||
gboolean mnemonics_visible;
|
||
|
||
if (self->mnemonic_keyval == GDK_KEY_VoidSymbol)
|
||
{
|
||
if (self->mnemonic_controller)
|
||
{
|
||
gtk_widget_remove_controller (widget, self->mnemonic_controller);
|
||
self->mnemonic_controller = NULL;
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (self->mnemonic_controller == NULL)
|
||
{
|
||
self->mnemonic_controller = gtk_shortcut_controller_new ();
|
||
gtk_event_controller_set_propagation_phase (self->mnemonic_controller, GTK_PHASE_CAPTURE);
|
||
gtk_shortcut_controller_set_scope (GTK_SHORTCUT_CONTROLLER (self->mnemonic_controller), GTK_SHORTCUT_SCOPE_MANAGED);
|
||
shortcut = gtk_shortcut_new (gtk_mnemonic_trigger_new (self->mnemonic_keyval),
|
||
g_object_ref (gtk_mnemonic_action_get ()));
|
||
gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (self->mnemonic_controller), shortcut);
|
||
gtk_widget_add_controller (GTK_WIDGET (self), self->mnemonic_controller);
|
||
}
|
||
else
|
||
{
|
||
shortcut = g_list_model_get_item (G_LIST_MODEL (self->mnemonic_controller), 0);
|
||
gtk_shortcut_set_trigger (shortcut, gtk_mnemonic_trigger_new (self->mnemonic_keyval));
|
||
g_object_unref (shortcut);
|
||
}
|
||
|
||
/* Connect to notify::mnemonics-visible of the root */
|
||
native = gtk_widget_get_native (GTK_WIDGET (self));
|
||
if (!GTK_IS_WINDOW (native) && !GTK_IS_POPOVER (native))
|
||
return;
|
||
|
||
/* always set up this widgets initial value */
|
||
g_object_get (native, "mnemonics-visible", &mnemonics_visible, NULL);
|
||
self->mnemonics_visible = mnemonics_visible;
|
||
|
||
connected =
|
||
GPOINTER_TO_INT (g_object_get_qdata (G_OBJECT (native), quark_mnemonics_visible_connected));
|
||
|
||
if (!connected)
|
||
{
|
||
g_signal_connect (native,
|
||
"notify::mnemonics-visible",
|
||
G_CALLBACK (label_mnemonics_visible_changed),
|
||
self);
|
||
g_object_set_qdata (G_OBJECT (native),
|
||
quark_mnemonics_visible_connected,
|
||
GINT_TO_POINTER (1));
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_root (GtkWidget *widget)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
GTK_WIDGET_CLASS (gtk_label_parent_class)->root (widget);
|
||
|
||
gtk_label_setup_mnemonic (self);
|
||
|
||
/* The PangoContext is replaced when the display changes, so clear the layouts */
|
||
gtk_label_clear_layout (GTK_LABEL (widget));
|
||
}
|
||
|
||
static void
|
||
gtk_label_unroot (GtkWidget *widget)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
gtk_label_setup_mnemonic (self);
|
||
|
||
GTK_WIDGET_CLASS (gtk_label_parent_class)->unroot (widget);
|
||
}
|
||
|
||
void
|
||
_gtk_label_mnemonics_visible_apply_recursively (GtkWidget *widget,
|
||
gboolean visible)
|
||
{
|
||
if (GTK_IS_LABEL (widget))
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
if (self->mnemonics_visible != visible)
|
||
{
|
||
self->mnemonics_visible = visible;
|
||
gtk_label_recalculate (self);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
GtkWidget *child;
|
||
|
||
for (child = gtk_widget_get_first_child (widget);
|
||
child;
|
||
child = gtk_widget_get_next_sibling (child))
|
||
{
|
||
if (GTK_IS_NATIVE (child))
|
||
continue;
|
||
|
||
_gtk_label_mnemonics_visible_apply_recursively (child, visible);
|
||
}
|
||
}
|
||
}
|
||
static void
|
||
label_mnemonic_widget_weak_notify (gpointer data,
|
||
GObject *where_the_object_was)
|
||
{
|
||
GtkLabel *self = data;
|
||
|
||
self->mnemonic_widget = NULL;
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_MNEMONIC_WIDGET]);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_mnemonic_widget:
|
||
* @self: a #GtkLabel
|
||
* @widget: (nullable): the target #GtkWidget, or %NULL to unset
|
||
*
|
||
* If the label has been set so that it has a mnemonic key (using
|
||
* i.e. gtk_label_set_markup_with_mnemonic(),
|
||
* gtk_label_set_text_with_mnemonic(), gtk_label_new_with_mnemonic()
|
||
* or the “use_underline” property) the label can be associated with a
|
||
* widget that is the target of the mnemonic. When the label is inside
|
||
* a widget (like a #GtkButton or a #GtkNotebook tab) it is
|
||
* automatically associated with the correct widget, but sometimes
|
||
* (i.e. when the target is a #GtkEntry next to the label) you need to
|
||
* set it explicitly using this function.
|
||
*
|
||
* The target widget will be accelerated by emitting the
|
||
* GtkWidget::mnemonic-activate signal on it. The default handler for
|
||
* this signal will activate the widget if there are no mnemonic collisions
|
||
* and toggle focus between the colliding widgets otherwise.
|
||
**/
|
||
void
|
||
gtk_label_set_mnemonic_widget (GtkLabel *self,
|
||
GtkWidget *widget)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (widget)
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
if (self->mnemonic_widget)
|
||
{
|
||
gtk_widget_remove_mnemonic_label (self->mnemonic_widget, GTK_WIDGET (self));
|
||
g_object_weak_unref (G_OBJECT (self->mnemonic_widget),
|
||
label_mnemonic_widget_weak_notify,
|
||
self);
|
||
}
|
||
self->mnemonic_widget = widget;
|
||
if (self->mnemonic_widget)
|
||
{
|
||
g_object_weak_ref (G_OBJECT (self->mnemonic_widget),
|
||
label_mnemonic_widget_weak_notify,
|
||
self);
|
||
gtk_widget_add_mnemonic_label (self->mnemonic_widget, GTK_WIDGET (self));
|
||
}
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_MNEMONIC_WIDGET]);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_mnemonic_widget:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Retrieves the target of the mnemonic (keyboard shortcut) of this
|
||
* label. See gtk_label_set_mnemonic_widget().
|
||
*
|
||
* Returns: (nullable) (transfer none): the target of the label’s mnemonic,
|
||
* or %NULL if none has been set and the default algorithm will be used.
|
||
**/
|
||
GtkWidget *
|
||
gtk_label_get_mnemonic_widget (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
return self->mnemonic_widget;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_mnemonic_keyval:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* If the label has been set so that it has a mnemonic key this function
|
||
* returns the keyval used for the mnemonic accelerator. If there is no
|
||
* mnemonic set up it returns #GDK_KEY_VoidSymbol.
|
||
*
|
||
* Returns: GDK keyval usable for accelerators, or #GDK_KEY_VoidSymbol
|
||
**/
|
||
guint
|
||
gtk_label_get_mnemonic_keyval (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), GDK_KEY_VoidSymbol);
|
||
|
||
return self->mnemonic_keyval;
|
||
}
|
||
|
||
static void
|
||
gtk_label_set_text_internal (GtkLabel *self,
|
||
char *str)
|
||
{
|
||
if (g_strcmp0 (self->text, str) == 0)
|
||
{
|
||
g_free (str);
|
||
return;
|
||
}
|
||
|
||
g_free (self->text);
|
||
self->text = str;
|
||
|
||
gtk_accessible_update_property (GTK_ACCESSIBLE (self),
|
||
GTK_ACCESSIBLE_PROPERTY_LABEL, self->text,
|
||
-1);
|
||
|
||
gtk_label_select_region_index (self, 0, 0);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_set_label_internal (GtkLabel *self,
|
||
const char *str)
|
||
{
|
||
if (g_strcmp0 (str, self->label) == 0)
|
||
return FALSE;
|
||
|
||
g_free (self->label);
|
||
self->label = g_strdup (str ? str : "");
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_LABEL]);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_set_use_markup_internal (GtkLabel *self,
|
||
gboolean val)
|
||
{
|
||
if (self->use_markup != val)
|
||
{
|
||
self->use_markup = val;
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_USE_MARKUP]);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_set_use_underline_internal (GtkLabel *self,
|
||
gboolean val)
|
||
{
|
||
if (self->use_underline != val)
|
||
{
|
||
self->use_underline = val;
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_USE_UNDERLINE]);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/* Calculates text, attrs and mnemonic_keyval from
|
||
* label, use_underline and use_markup
|
||
*/
|
||
static void
|
||
gtk_label_recalculate (GtkLabel *self)
|
||
{
|
||
guint keyval = self->mnemonic_keyval;
|
||
|
||
gtk_label_clear_links (self);
|
||
gtk_label_clear_layout (self);
|
||
gtk_label_clear_select_info (self);
|
||
|
||
if (self->use_markup || self->use_underline)
|
||
gtk_label_set_markup_internal (self, self->label, self->use_underline);
|
||
else
|
||
{
|
||
g_clear_pointer (&self->markup_attrs, pango_attr_list_unref);
|
||
|
||
gtk_label_set_text_internal (self, g_strdup (self->label));
|
||
}
|
||
|
||
if (!self->use_underline)
|
||
self->mnemonic_keyval = GDK_KEY_VoidSymbol;
|
||
|
||
if (keyval != self->mnemonic_keyval)
|
||
{
|
||
gtk_label_setup_mnemonic (self);
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_MNEMONIC_KEYVAL]);
|
||
}
|
||
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_text:
|
||
* @self: a #GtkLabel
|
||
* @str: The text you want to set
|
||
*
|
||
* Sets the text within the #GtkLabel widget. It overwrites any text that
|
||
* was there before.
|
||
*
|
||
* This function will clear any previously set mnemonic accelerators, and
|
||
* set the #GtkLabel:use-underline property to %FALSE as a side effect.
|
||
*
|
||
* This function will set the #GtkLabel:use-markup property to %FALSE
|
||
* as a side effect.
|
||
*
|
||
* See also: gtk_label_set_markup()
|
||
**/
|
||
void
|
||
gtk_label_set_text (GtkLabel *self,
|
||
const char *str)
|
||
{
|
||
gboolean changed;
|
||
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
changed = gtk_label_set_label_internal (self, str);
|
||
changed = gtk_label_set_use_markup_internal (self, FALSE) || changed;
|
||
changed = gtk_label_set_use_underline_internal (self, FALSE) || changed;
|
||
|
||
if (changed)
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_attributes:
|
||
* @self: a #GtkLabel
|
||
* @attrs: (nullable): a #PangoAttrList, or %NULL
|
||
*
|
||
* Sets a #PangoAttrList; the attributes in the list are applied to the
|
||
* label text.
|
||
*
|
||
* The attributes set with this function will be applied
|
||
* and merged with any other attributes previously effected by way
|
||
* of the #GtkLabel:use-underline or #GtkLabel:use-markup properties.
|
||
* While it is not recommended to mix markup strings with manually set
|
||
* attributes, if you must; know that the attributes will be applied
|
||
* to the label after the markup string is parsed.
|
||
**/
|
||
void
|
||
gtk_label_set_attributes (GtkLabel *self,
|
||
PangoAttrList *attrs)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (!attrs && !self->attrs)
|
||
return;
|
||
|
||
if (attrs)
|
||
pango_attr_list_ref (attrs);
|
||
|
||
if (self->attrs)
|
||
pango_attr_list_unref (self->attrs);
|
||
self->attrs = attrs;
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_ATTRIBUTES]);
|
||
|
||
gtk_label_clear_layout (self);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_attributes:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the attribute list that was set on the label using
|
||
* gtk_label_set_attributes(), if any. This function does
|
||
* not reflect attributes that come from the labels markup
|
||
* (see gtk_label_set_markup()). If you want to get the
|
||
* effective attributes for the label, use
|
||
* pango_layout_get_attribute (gtk_label_get_layout (self)).
|
||
*
|
||
* Returns: (nullable) (transfer none): the attribute list, or %NULL
|
||
* if none was set.
|
||
**/
|
||
PangoAttrList *
|
||
gtk_label_get_attributes (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
return self->attrs;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_label:
|
||
* @self: a #GtkLabel
|
||
* @str: the new text to set for the label
|
||
*
|
||
* Sets the text of the label. The label is interpreted as
|
||
* including embedded underlines and/or Pango markup depending
|
||
* on the values of the #GtkLabel:use-underline and
|
||
* #GtkLabel:use-markup properties.
|
||
**/
|
||
void
|
||
gtk_label_set_label (GtkLabel *self,
|
||
const char *str)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
if (gtk_label_set_label_internal (self, str))
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_label:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Fetches the text from a label widget including any embedded
|
||
* underlines indicating mnemonics and Pango markup. (See
|
||
* gtk_label_get_text()).
|
||
*
|
||
* Returns: the text of the label widget. This string is
|
||
* owned by the widget and must not be modified or freed.
|
||
**/
|
||
const char *
|
||
gtk_label_get_label (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
return self->label;
|
||
}
|
||
|
||
typedef struct
|
||
{
|
||
GtkLabel *label;
|
||
GArray *links;
|
||
GString *new_str;
|
||
gsize text_len;
|
||
} UriParserData;
|
||
|
||
static void
|
||
start_element_handler (GMarkupParseContext *context,
|
||
const char *element_name,
|
||
const char **attribute_names,
|
||
const char **attribute_values,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
UriParserData *pdata = user_data;
|
||
GtkLabel *self = pdata->label;
|
||
|
||
if (strcmp (element_name, "a") == 0)
|
||
{
|
||
GtkLabelLink link;
|
||
const char *uri = NULL;
|
||
const char *title = NULL;
|
||
const char *class = NULL;
|
||
gboolean visited = FALSE;
|
||
int line_number;
|
||
int char_number;
|
||
int i;
|
||
GtkCssNode *widget_node;
|
||
GtkStateFlags state;
|
||
|
||
g_markup_parse_context_get_position (context, &line_number, &char_number);
|
||
|
||
for (i = 0; attribute_names[i] != NULL; i++)
|
||
{
|
||
const char *attr = attribute_names[i];
|
||
|
||
if (strcmp (attr, "href") == 0)
|
||
uri = attribute_values[i];
|
||
else if (strcmp (attr, "title") == 0)
|
||
title = attribute_values[i];
|
||
else if (strcmp (attr, "class") == 0)
|
||
class = attribute_values[i];
|
||
else
|
||
{
|
||
g_set_error (error,
|
||
G_MARKUP_ERROR,
|
||
G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
|
||
"Attribute '%s' is not allowed on the <a> tag "
|
||
"on line %d char %d",
|
||
attr, line_number, char_number);
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (uri == NULL)
|
||
{
|
||
g_set_error (error,
|
||
G_MARKUP_ERROR,
|
||
G_MARKUP_ERROR_INVALID_CONTENT,
|
||
"Attribute 'href' was missing on the <a> tag "
|
||
"on line %d char %d",
|
||
line_number, char_number);
|
||
return;
|
||
}
|
||
|
||
visited = FALSE;
|
||
if (self->select_info)
|
||
{
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *l = &self->select_info->links[i];
|
||
|
||
if (strcmp (uri, l->uri) == 0)
|
||
{
|
||
visited = l->visited;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!pdata->links)
|
||
pdata->links = g_array_new (FALSE, TRUE, sizeof (GtkLabelLink));
|
||
|
||
link.uri = g_strdup (uri);
|
||
link.title = g_strdup (title);
|
||
|
||
widget_node = gtk_widget_get_css_node (GTK_WIDGET (pdata->label));
|
||
link.cssnode = gtk_css_node_new ();
|
||
gtk_css_node_set_name (link.cssnode, g_quark_from_static_string ("link"));
|
||
gtk_css_node_set_parent (link.cssnode, widget_node);
|
||
if (class)
|
||
gtk_css_node_add_class (link.cssnode, g_quark_from_string (class));
|
||
|
||
state = gtk_css_node_get_state (widget_node);
|
||
if (visited)
|
||
state |= GTK_STATE_FLAG_VISITED;
|
||
else
|
||
state |= GTK_STATE_FLAG_LINK;
|
||
gtk_css_node_set_state (link.cssnode, state);
|
||
g_object_unref (link.cssnode);
|
||
|
||
link.visited = visited;
|
||
link.start = pdata->text_len;
|
||
g_array_append_val (pdata->links, link);
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
|
||
g_string_append_c (pdata->new_str, '<');
|
||
g_string_append (pdata->new_str, element_name);
|
||
|
||
for (i = 0; attribute_names[i] != NULL; i++)
|
||
{
|
||
const char *attr = attribute_names[i];
|
||
const char *value = attribute_values[i];
|
||
char *newvalue;
|
||
|
||
newvalue = g_markup_escape_text (value, -1);
|
||
|
||
g_string_append_c (pdata->new_str, ' ');
|
||
g_string_append (pdata->new_str, attr);
|
||
g_string_append (pdata->new_str, "=\"");
|
||
g_string_append (pdata->new_str, newvalue);
|
||
g_string_append_c (pdata->new_str, '\"');
|
||
|
||
g_free (newvalue);
|
||
}
|
||
g_string_append_c (pdata->new_str, '>');
|
||
}
|
||
}
|
||
|
||
static void
|
||
end_element_handler (GMarkupParseContext *context,
|
||
const char *element_name,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
UriParserData *pdata = user_data;
|
||
|
||
if (!strcmp (element_name, "a"))
|
||
{
|
||
GtkLabelLink *link = &g_array_index (pdata->links, GtkLabelLink, pdata->links->len - 1);
|
||
link->end = pdata->text_len;
|
||
}
|
||
else
|
||
{
|
||
g_string_append (pdata->new_str, "</");
|
||
g_string_append (pdata->new_str, element_name);
|
||
g_string_append_c (pdata->new_str, '>');
|
||
}
|
||
}
|
||
|
||
static void
|
||
text_handler (GMarkupParseContext *context,
|
||
const char *text,
|
||
gsize text_len,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
UriParserData *pdata = user_data;
|
||
char *newtext;
|
||
|
||
newtext = g_markup_escape_text (text, text_len);
|
||
g_string_append (pdata->new_str, newtext);
|
||
pdata->text_len += text_len;
|
||
g_free (newtext);
|
||
}
|
||
|
||
static const GMarkupParser markup_parser =
|
||
{
|
||
start_element_handler,
|
||
end_element_handler,
|
||
text_handler,
|
||
NULL,
|
||
NULL
|
||
};
|
||
|
||
static gboolean
|
||
xml_isspace (char c)
|
||
{
|
||
return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
|
||
}
|
||
|
||
static void
|
||
link_free (GtkLabelLink *link)
|
||
{
|
||
gtk_css_node_set_parent (link->cssnode, NULL);
|
||
g_free (link->uri);
|
||
g_free (link->title);
|
||
}
|
||
|
||
static gboolean
|
||
parse_uri_markup (GtkLabel *self,
|
||
const char *str,
|
||
char **new_str,
|
||
GtkLabelLink **links,
|
||
guint *out_n_links,
|
||
GError **error)
|
||
{
|
||
GMarkupParseContext *context;
|
||
const char *p, *end;
|
||
gsize length;
|
||
UriParserData pdata;
|
||
|
||
length = strlen (str);
|
||
p = str;
|
||
end = str + length;
|
||
|
||
pdata.label = self;
|
||
pdata.links = NULL;
|
||
pdata.new_str = g_string_sized_new (length);
|
||
pdata.text_len = 0;
|
||
|
||
while (p != end && xml_isspace (*p))
|
||
p++;
|
||
|
||
context = g_markup_parse_context_new (&markup_parser, 0, &pdata, NULL);
|
||
|
||
if (end - p >= 8 && strncmp (p, "<markup>", 8) == 0)
|
||
{
|
||
if (!g_markup_parse_context_parse (context, str, length, error))
|
||
goto failed;
|
||
}
|
||
else
|
||
{
|
||
if (!g_markup_parse_context_parse (context, "<markup>", 8, error))
|
||
goto failed;
|
||
|
||
if (!g_markup_parse_context_parse (context, str, length, error))
|
||
goto failed;
|
||
|
||
if (!g_markup_parse_context_parse (context, "</markup>", 9, error))
|
||
goto failed;
|
||
}
|
||
|
||
if (!g_markup_parse_context_end_parse (context, error))
|
||
goto failed;
|
||
|
||
g_markup_parse_context_free (context);
|
||
|
||
*new_str = g_string_free (pdata.new_str, FALSE);
|
||
|
||
if (pdata.links)
|
||
{
|
||
*out_n_links = pdata.links->len;
|
||
*links = (GtkLabelLink *)g_array_free (pdata.links, FALSE);
|
||
}
|
||
else
|
||
{
|
||
*links = NULL;
|
||
}
|
||
|
||
return TRUE;
|
||
|
||
failed:
|
||
g_markup_parse_context_free (context);
|
||
g_string_free (pdata.new_str, TRUE);
|
||
|
||
if (pdata.links)
|
||
g_array_free (pdata.links, TRUE);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_label_ensure_has_tooltip (GtkLabel *self)
|
||
{
|
||
guint i;
|
||
gboolean has_tooltip = FALSE;
|
||
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &self->select_info->links[i];
|
||
|
||
if (link->title)
|
||
{
|
||
has_tooltip = TRUE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
gtk_widget_set_has_tooltip (GTK_WIDGET (self), has_tooltip);
|
||
}
|
||
|
||
/* Reads @text and extracts the accel key, if any.
|
||
* @new_text will be set to the given text with the first _ removed.
|
||
*
|
||
* Returned will be the one underline attribute used for the mnemonic
|
||
* */
|
||
static void
|
||
extract_mnemonic_keyval (const char *text,
|
||
guint *out_accel_key,
|
||
char **out_new_text,
|
||
PangoAttribute **out_mnemonic_attribute)
|
||
{
|
||
const gsize text_len = strlen (text);
|
||
gunichar c;
|
||
const char *p;
|
||
|
||
p = text;
|
||
for (;;)
|
||
{
|
||
const char *_index;
|
||
|
||
c = g_utf8_get_char (p);
|
||
|
||
if (c == '\0')
|
||
break;
|
||
|
||
if (c != '_')
|
||
{
|
||
p = g_utf8_next_char (p);
|
||
continue;
|
||
}
|
||
|
||
_index = p;
|
||
|
||
p = g_utf8_next_char (p);
|
||
c = g_utf8_get_char (p);
|
||
|
||
if (c != '_' && c != '\0')
|
||
{
|
||
const gsize byte_index = p - text - 1; /* Of the _ */
|
||
|
||
/* c is the accel key */
|
||
if (out_accel_key)
|
||
*out_accel_key = gdk_keyval_to_lower (gdk_unicode_to_keyval (c));
|
||
if (out_new_text)
|
||
{
|
||
*out_new_text = g_malloc (text_len);
|
||
memcpy (*out_new_text, text, byte_index);
|
||
memcpy (*out_new_text + byte_index, p, text_len - byte_index);
|
||
}
|
||
|
||
if (out_mnemonic_attribute)
|
||
{
|
||
PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
|
||
attr->start_index = _index - text;
|
||
attr->end_index = p - text;
|
||
*out_mnemonic_attribute = attr;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
p = g_utf8_next_char (p);
|
||
}
|
||
|
||
/* No accel key found */
|
||
if (out_accel_key)
|
||
*out_accel_key = GDK_KEY_VoidSymbol;
|
||
if (out_new_text)
|
||
*out_new_text = NULL;
|
||
if (out_mnemonic_attribute)
|
||
*out_mnemonic_attribute = NULL;
|
||
}
|
||
|
||
static void
|
||
gtk_label_set_markup_internal (GtkLabel *self,
|
||
const char *str,
|
||
gboolean with_uline)
|
||
{
|
||
char *text = NULL;
|
||
GError *error = NULL;
|
||
PangoAttrList *attrs = NULL;
|
||
char *str_for_display = NULL;
|
||
GtkLabelLink *links = NULL;
|
||
guint n_links = 0;
|
||
PangoAttribute *mnemonic_attr = NULL;
|
||
|
||
if (!parse_uri_markup (self, str, &str_for_display, &links, &n_links, &error))
|
||
goto error_set;
|
||
|
||
if (links)
|
||
{
|
||
gtk_label_ensure_select_info (self);
|
||
self->select_info->links = g_steal_pointer (&links);
|
||
self->select_info->n_links = n_links;
|
||
gtk_label_ensure_has_tooltip (self);
|
||
gtk_widget_add_css_class (GTK_WIDGET (self), "link");
|
||
}
|
||
|
||
if (!with_uline)
|
||
{
|
||
no_uline:
|
||
/* Extract the text to display */
|
||
if (!pango_parse_markup (str_for_display, -1, 0, &attrs, &text, NULL, &error))
|
||
goto error_set;
|
||
}
|
||
else /* Underline AND markup is a little more complicated... */
|
||
{
|
||
char *new_text = NULL;
|
||
guint accel_keyval;
|
||
gboolean auto_mnemonics = TRUE;
|
||
gboolean do_mnemonics = self->mnemonics_visible &&
|
||
(!auto_mnemonics || gtk_widget_is_sensitive (GTK_WIDGET (self))) &&
|
||
(!self->mnemonic_widget || gtk_widget_is_sensitive (self->mnemonic_widget));
|
||
|
||
/* Remove the mnemonic underline */
|
||
extract_mnemonic_keyval (str_for_display,
|
||
&accel_keyval,
|
||
&new_text,
|
||
NULL);
|
||
if (!new_text) /* No underline found anyway */
|
||
goto no_uline;
|
||
|
||
self->mnemonic_keyval = accel_keyval;
|
||
|
||
/* Extract the text to display */
|
||
if (!pango_parse_markup (new_text, -1, '_',
|
||
do_mnemonics ? &attrs : NULL, &text, NULL, &error))
|
||
goto error_set;
|
||
|
||
if (do_mnemonics)
|
||
{
|
||
/* text is now the final text, but we need to parse str_for_display once again
|
||
* *with* the mnemonic underline so we can remove the markup tags and get the
|
||
* proper attribute indices */
|
||
char *text_for_accel;
|
||
|
||
if (!pango_parse_markup (str_for_display, -1, 0, NULL, &text_for_accel, NULL, &error))
|
||
{
|
||
g_free (new_text);
|
||
goto error_set;
|
||
}
|
||
|
||
extract_mnemonic_keyval (text_for_accel,
|
||
NULL,
|
||
NULL,
|
||
&mnemonic_attr);
|
||
g_free (text_for_accel);
|
||
}
|
||
|
||
g_free (new_text);
|
||
}
|
||
|
||
g_free (str_for_display);
|
||
|
||
if (text)
|
||
gtk_label_set_text_internal (self, text);
|
||
|
||
|
||
g_clear_pointer (&self->markup_attrs, pango_attr_list_unref);
|
||
self->markup_attrs = attrs;
|
||
|
||
if (mnemonic_attr)
|
||
pango_attr_list_insert_before (self->markup_attrs, mnemonic_attr);
|
||
|
||
return;
|
||
|
||
error_set:
|
||
g_warning ("Failed to set text '%s' from markup due to error parsing markup: %s",
|
||
str, error->message);
|
||
g_error_free (error);
|
||
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_markup:
|
||
* @self: a #GtkLabel
|
||
* @str: a markup string (see [Pango markup format][PangoMarkupFormat])
|
||
*
|
||
* Parses @str which is marked up with the
|
||
* [Pango text markup language][PangoMarkupFormat], setting the
|
||
* label’s text and attribute list based on the parse results.
|
||
*
|
||
* If the @str is external data, you may need to escape it with
|
||
* g_markup_escape_text() or g_markup_printf_escaped():
|
||
*
|
||
* |[<!-- language="C" -->
|
||
* GtkWidget *self = gtk_label_new (NULL);
|
||
* const char *str = "...";
|
||
* const char *format = "<span style=\"italic\">\%s</span>";
|
||
* char *markup;
|
||
*
|
||
* markup = g_markup_printf_escaped (format, str);
|
||
* gtk_label_set_markup (GTK_LABEL (self), markup);
|
||
* g_free (markup);
|
||
* ]|
|
||
*
|
||
* This function will set the #GtkLabel:use-markup property to %TRUE as
|
||
* a side effect.
|
||
*
|
||
* If you set the label contents using the #GtkLabel:label property you
|
||
* should also ensure that you set the #GtkLabel:use-markup property
|
||
* accordingly.
|
||
*
|
||
* See also: gtk_label_set_text()
|
||
**/
|
||
void
|
||
gtk_label_set_markup (GtkLabel *self,
|
||
const char *str)
|
||
{
|
||
gboolean changed;
|
||
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
changed = gtk_label_set_label_internal (self, str);
|
||
changed = gtk_label_set_use_markup_internal (self, TRUE) || changed;
|
||
changed = gtk_label_set_use_underline_internal (self, FALSE) || changed;
|
||
|
||
if (changed)
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_markup_with_mnemonic:
|
||
* @self: a #GtkLabel
|
||
* @str: a markup string (see
|
||
* [Pango markup format][PangoMarkupFormat])
|
||
*
|
||
* Parses @str which is marked up with the
|
||
* [Pango text markup language][PangoMarkupFormat],
|
||
* setting the label’s text and attribute list based on the parse results.
|
||
* If characters in @str are preceded by an underscore, they are underlined
|
||
* indicating that they represent a keyboard accelerator called a mnemonic.
|
||
*
|
||
* The mnemonic key can be used to activate another widget, chosen
|
||
* automatically, or explicitly using gtk_label_set_mnemonic_widget().
|
||
*/
|
||
void
|
||
gtk_label_set_markup_with_mnemonic (GtkLabel *self,
|
||
const char *str)
|
||
{
|
||
gboolean changed;
|
||
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
changed = gtk_label_set_label_internal (self, str);
|
||
changed = gtk_label_set_use_markup_internal (self, TRUE) || changed;
|
||
changed = gtk_label_set_use_underline_internal (self, TRUE) || changed;
|
||
|
||
if (changed)
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_text:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Fetches the text from a label widget, as displayed on the
|
||
* screen. This does not include any embedded underlines
|
||
* indicating mnemonics or Pango markup. (See gtk_label_get_label())
|
||
*
|
||
* Returns: the text in the label widget. This is the internal
|
||
* string used by the label, and must not be modified.
|
||
**/
|
||
const char *
|
||
gtk_label_get_text (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
return self->text;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_justify:
|
||
* @self: a #GtkLabel
|
||
* @jtype: a #GtkJustification
|
||
*
|
||
* Sets the alignment of the lines in the text of the label relative to
|
||
* each other. %GTK_JUSTIFY_LEFT is the default value when the widget is
|
||
* first created with gtk_label_new(). If you instead want to set the
|
||
* alignment of the label as a whole, use gtk_widget_set_halign() instead.
|
||
* gtk_label_set_justify() has no effect on labels containing only a
|
||
* single line.
|
||
*/
|
||
void
|
||
gtk_label_set_justify (GtkLabel *self,
|
||
GtkJustification jtype)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);
|
||
|
||
if ((GtkJustification) self->jtype != jtype)
|
||
{
|
||
self->jtype = jtype;
|
||
|
||
/* No real need to be this drastic, but easier than duplicating the code */
|
||
gtk_label_clear_layout (self);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_JUSTIFY]);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_justify:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns the justification of the label. See gtk_label_set_justify().
|
||
*
|
||
* Returns: #GtkJustification
|
||
**/
|
||
GtkJustification
|
||
gtk_label_get_justify (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), 0);
|
||
|
||
return self->jtype;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_ellipsize:
|
||
* @self: a #GtkLabel
|
||
* @mode: a #PangoEllipsizeMode
|
||
*
|
||
* Sets the mode used to ellipsize (add an ellipsis: "...") to the text
|
||
* if there is not enough space to render the entire string.
|
||
**/
|
||
void
|
||
gtk_label_set_ellipsize (GtkLabel *self,
|
||
PangoEllipsizeMode mode)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE && mode <= PANGO_ELLIPSIZE_END);
|
||
|
||
if ((PangoEllipsizeMode) self->ellipsize != mode)
|
||
{
|
||
self->ellipsize = mode;
|
||
|
||
/* No real need to be this drastic, but easier than duplicating the code */
|
||
gtk_label_clear_layout (self);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_ELLIPSIZE]);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_ellipsize:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns the ellipsizing position of the label. See gtk_label_set_ellipsize().
|
||
*
|
||
* Returns: #PangoEllipsizeMode
|
||
**/
|
||
PangoEllipsizeMode
|
||
gtk_label_get_ellipsize (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), PANGO_ELLIPSIZE_NONE);
|
||
|
||
return self->ellipsize;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_width_chars:
|
||
* @self: a #GtkLabel
|
||
* @n_chars: the new desired width, in characters.
|
||
*
|
||
* Sets the desired width in characters of @label to @n_chars.
|
||
**/
|
||
void
|
||
gtk_label_set_width_chars (GtkLabel *self,
|
||
int n_chars)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (self->width_chars != n_chars)
|
||
{
|
||
self->width_chars = n_chars;
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_WIDTH_CHARS]);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_width_chars:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Retrieves the desired width of @label, in characters. See
|
||
* gtk_label_set_width_chars().
|
||
*
|
||
* Returns: the width of the label in characters.
|
||
**/
|
||
int
|
||
gtk_label_get_width_chars (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), -1);
|
||
|
||
return self->width_chars;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_max_width_chars:
|
||
* @self: a #GtkLabel
|
||
* @n_chars: the new desired maximum width, in characters.
|
||
*
|
||
* Sets the desired maximum width in characters of @label to @n_chars.
|
||
**/
|
||
void
|
||
gtk_label_set_max_width_chars (GtkLabel *self,
|
||
int n_chars)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (self->max_width_chars != n_chars)
|
||
{
|
||
self->max_width_chars = n_chars;
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_MAX_WIDTH_CHARS]);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_max_width_chars:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Retrieves the desired maximum width of @label, in characters. See
|
||
* gtk_label_set_width_chars().
|
||
*
|
||
* Returns: the maximum width of the label in characters.
|
||
**/
|
||
int
|
||
gtk_label_get_max_width_chars (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), -1);
|
||
|
||
return self->max_width_chars;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_wrap:
|
||
* @self: a #GtkLabel
|
||
* @wrap: the setting
|
||
*
|
||
* Toggles line wrapping within the #GtkLabel widget. %TRUE makes it break
|
||
* lines if text exceeds the widget’s size. %FALSE lets the text get cut off
|
||
* by the edge of the widget if it exceeds the widget size.
|
||
*
|
||
* Note that setting line wrapping to %TRUE does not make the label
|
||
* wrap at its parent container’s width, because GTK widgets
|
||
* conceptually can’t make their requisition depend on the parent
|
||
* container’s size. For a label that wraps at a specific position,
|
||
* set the label’s width using gtk_widget_set_size_request().
|
||
**/
|
||
void
|
||
gtk_label_set_wrap (GtkLabel *self,
|
||
gboolean wrap)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
wrap = wrap != FALSE;
|
||
|
||
if (self->wrap != wrap)
|
||
{
|
||
self->wrap = wrap;
|
||
|
||
gtk_label_clear_layout (self);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_WRAP]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_wrap:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns whether lines in the label are automatically wrapped.
|
||
* See gtk_label_set_wrap().
|
||
*
|
||
* Returns: %TRUE if the lines of the label are automatically wrapped.
|
||
*/
|
||
gboolean
|
||
gtk_label_get_wrap (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
return self->wrap;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_wrap_mode:
|
||
* @self: a #GtkLabel
|
||
* @wrap_mode: the line wrapping mode
|
||
*
|
||
* If line wrapping is on (see gtk_label_set_wrap()) this controls how
|
||
* the line wrapping is done. The default is %PANGO_WRAP_WORD which means
|
||
* wrap on word boundaries.
|
||
**/
|
||
void
|
||
gtk_label_set_wrap_mode (GtkLabel *self,
|
||
PangoWrapMode wrap_mode)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (self->wrap_mode != wrap_mode)
|
||
{
|
||
self->wrap_mode = wrap_mode;
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_WRAP_MODE]);
|
||
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_wrap_mode:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns line wrap mode used by the label. See gtk_label_set_wrap_mode().
|
||
*
|
||
* Returns: %TRUE if the lines of the label are automatically wrapped.
|
||
*/
|
||
PangoWrapMode
|
||
gtk_label_get_wrap_mode (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
return self->wrap_mode;
|
||
}
|
||
|
||
static void
|
||
gtk_label_dispose (GObject *object)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (object);
|
||
|
||
gtk_label_set_mnemonic_widget (self, NULL);
|
||
|
||
G_OBJECT_CLASS (gtk_label_parent_class)->dispose (object);
|
||
}
|
||
|
||
static void
|
||
gtk_label_finalize (GObject *object)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (object);
|
||
|
||
g_free (self->label);
|
||
g_free (self->text);
|
||
|
||
g_clear_object (&self->layout);
|
||
g_clear_pointer (&self->attrs, pango_attr_list_unref);
|
||
g_clear_pointer (&self->markup_attrs, pango_attr_list_unref);
|
||
|
||
if (self->select_info)
|
||
g_object_unref (self->select_info->provider);
|
||
|
||
gtk_label_clear_links (self);
|
||
g_free (self->select_info);
|
||
|
||
g_clear_pointer (&self->popup_menu, gtk_widget_unparent);
|
||
g_clear_object (&self->extra_menu);
|
||
|
||
G_OBJECT_CLASS (gtk_label_parent_class)->finalize (object);
|
||
}
|
||
|
||
static void
|
||
gtk_label_clear_layout (GtkLabel *self)
|
||
{
|
||
g_clear_object (&self->layout);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_measuring_layout:
|
||
* @self: the label
|
||
* @existing_layout: %NULL or an existing layout already in use.
|
||
* @width: the width to measure with in pango units, or -1 for infinite
|
||
*
|
||
* Gets a layout that can be used for measuring sizes. The returned
|
||
* layout will be identical to the label’s layout except for the
|
||
* layout’s width, which will be set to @width. Do not modify the returned
|
||
* layout.
|
||
*
|
||
* Returns: a new reference to a pango layout
|
||
**/
|
||
static PangoLayout *
|
||
gtk_label_get_measuring_layout (GtkLabel *self,
|
||
PangoLayout *existing_layout,
|
||
int width)
|
||
{
|
||
PangoLayout *copy;
|
||
|
||
if (existing_layout != NULL)
|
||
{
|
||
if (existing_layout != self->layout)
|
||
{
|
||
pango_layout_set_width (existing_layout, width);
|
||
return existing_layout;
|
||
}
|
||
|
||
g_object_unref (existing_layout);
|
||
}
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
if (pango_layout_get_width (self->layout) == width)
|
||
{
|
||
g_object_ref (self->layout);
|
||
return self->layout;
|
||
}
|
||
|
||
/* We can use the label's own layout if we're not allocated a size yet,
|
||
* because we don't need it to be properly setup at that point.
|
||
* This way we can make use of caching upon the label's creation.
|
||
*/
|
||
if (gtk_widget_get_width (GTK_WIDGET (self)) <= 1)
|
||
{
|
||
g_object_ref (self->layout);
|
||
pango_layout_set_width (self->layout, width);
|
||
return self->layout;
|
||
}
|
||
|
||
/* oftentimes we want to measure a width that is far wider than the current width,
|
||
* even though the layout would not change if we made it wider. In that case, we
|
||
* can just return the current layout, because for measuring purposes, it will be
|
||
* identical.
|
||
*/
|
||
if (!pango_layout_is_wrapped (self->layout) &&
|
||
!pango_layout_is_ellipsized (self->layout))
|
||
{
|
||
PangoRectangle rect;
|
||
|
||
if (width == -1)
|
||
return g_object_ref (self->layout);
|
||
|
||
pango_layout_get_extents (self->layout, NULL, &rect);
|
||
if (rect.width <= width)
|
||
return g_object_ref (self->layout);
|
||
}
|
||
|
||
copy = pango_layout_copy (self->layout);
|
||
pango_layout_set_width (copy, width);
|
||
return copy;
|
||
}
|
||
|
||
static void
|
||
gtk_label_update_layout_attributes (GtkLabel *self,
|
||
PangoAttrList *style_attrs)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
GtkCssStyle *style;
|
||
PangoAttrList *attrs;
|
||
|
||
if (self->layout == NULL)
|
||
{
|
||
pango_attr_list_unref (style_attrs);
|
||
return;
|
||
}
|
||
|
||
if (self->select_info && self->select_info->links)
|
||
{
|
||
guint i;
|
||
|
||
attrs = pango_attr_list_new ();
|
||
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &self->select_info->links[i];
|
||
const GdkRGBA *link_color;
|
||
PangoAttrList *link_attrs;
|
||
PangoAttribute *attr;
|
||
|
||
style = gtk_css_node_get_style (link->cssnode);
|
||
link_attrs = gtk_css_style_get_pango_attributes (style);
|
||
if (link_attrs)
|
||
{
|
||
GSList *attributes = pango_attr_list_get_attributes (link_attrs);
|
||
GSList *l;
|
||
for (l = attributes; l; l = l->next)
|
||
{
|
||
attr = l->data;
|
||
|
||
attr->start_index = link->start;
|
||
attr->end_index = link->end;
|
||
pango_attr_list_insert (attrs, attr);
|
||
}
|
||
g_slist_free (attributes);
|
||
}
|
||
|
||
link_color = gtk_css_color_value_get_rgba (style->core->color);
|
||
attr = pango_attr_foreground_new (link_color->red * 65535,
|
||
link_color->green * 65535,
|
||
link_color->blue * 65535);
|
||
attr->start_index = link->start;
|
||
attr->end_index = link->end;
|
||
pango_attr_list_insert (attrs, attr);
|
||
|
||
pango_attr_list_unref (link_attrs);
|
||
}
|
||
}
|
||
else
|
||
attrs = NULL;
|
||
|
||
style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
|
||
if (!style_attrs)
|
||
style_attrs = gtk_css_style_get_pango_attributes (style);
|
||
|
||
if (style_attrs)
|
||
{
|
||
attrs = _gtk_pango_attr_list_merge (attrs, style_attrs);
|
||
pango_attr_list_unref (style_attrs);
|
||
}
|
||
|
||
attrs = _gtk_pango_attr_list_merge (attrs, self->markup_attrs);
|
||
attrs = _gtk_pango_attr_list_merge (attrs, self->attrs);
|
||
|
||
pango_layout_set_attributes (self->layout, attrs);
|
||
|
||
pango_attr_list_unref (attrs);
|
||
}
|
||
|
||
static void
|
||
gtk_label_ensure_layout (GtkLabel *self)
|
||
{
|
||
PangoAlignment align;
|
||
gboolean rtl;
|
||
|
||
if (self->layout)
|
||
return;
|
||
|
||
align = PANGO_ALIGN_LEFT; /* Quiet gcc */
|
||
rtl = _gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_RTL;
|
||
self->layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), self->text);
|
||
|
||
gtk_label_update_layout_attributes (self, NULL);
|
||
|
||
switch (self->jtype)
|
||
{
|
||
case GTK_JUSTIFY_LEFT:
|
||
align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
|
||
break;
|
||
case GTK_JUSTIFY_RIGHT:
|
||
align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
|
||
break;
|
||
case GTK_JUSTIFY_CENTER:
|
||
align = PANGO_ALIGN_CENTER;
|
||
break;
|
||
case GTK_JUSTIFY_FILL:
|
||
align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
|
||
pango_layout_set_justify (self->layout, TRUE);
|
||
break;
|
||
default:
|
||
g_assert_not_reached();
|
||
}
|
||
|
||
pango_layout_set_alignment (self->layout, align);
|
||
pango_layout_set_ellipsize (self->layout, self->ellipsize);
|
||
pango_layout_set_wrap (self->layout, self->wrap_mode);
|
||
pango_layout_set_single_paragraph_mode (self->layout, self->single_line_mode);
|
||
if (self->lines > 0)
|
||
pango_layout_set_height (self->layout, - self->lines);
|
||
|
||
if (self->ellipsize || self->wrap)
|
||
pango_layout_set_width (self->layout, gtk_widget_get_width (GTK_WIDGET (self)) * PANGO_SCALE);
|
||
}
|
||
|
||
static GtkSizeRequestMode
|
||
gtk_label_get_request_mode (GtkWidget *widget)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
if (self->wrap)
|
||
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
|
||
|
||
return GTK_SIZE_REQUEST_CONSTANT_SIZE;
|
||
}
|
||
|
||
|
||
static void
|
||
get_height_for_width (GtkLabel *self,
|
||
int width,
|
||
int *minimum_height,
|
||
int *natural_height,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
PangoLayout *layout;
|
||
int text_height, baseline;
|
||
|
||
layout = gtk_label_get_measuring_layout (self, NULL, width * PANGO_SCALE);
|
||
|
||
pango_layout_get_pixel_size (layout, NULL, &text_height);
|
||
|
||
*minimum_height = text_height;
|
||
*natural_height = text_height;
|
||
|
||
baseline = pango_layout_get_baseline (layout) / PANGO_SCALE;
|
||
*minimum_baseline = baseline;
|
||
*natural_baseline = baseline;
|
||
|
||
g_object_unref (layout);
|
||
}
|
||
|
||
static int
|
||
get_char_pixels (GtkWidget *self,
|
||
PangoLayout *layout)
|
||
{
|
||
PangoContext *context;
|
||
PangoFontMetrics *metrics;
|
||
int char_width, digit_width;
|
||
|
||
context = pango_layout_get_context (layout);
|
||
metrics = pango_context_get_metrics (context,
|
||
pango_context_get_font_description (context),
|
||
pango_context_get_language (context));
|
||
char_width = pango_font_metrics_get_approximate_char_width (metrics);
|
||
digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
|
||
pango_font_metrics_unref (metrics);
|
||
|
||
return MAX (char_width, digit_width);;
|
||
}
|
||
|
||
static void
|
||
gtk_label_get_preferred_layout_size (GtkLabel *self,
|
||
PangoRectangle *smallest,
|
||
PangoRectangle *widest,
|
||
int *smallest_baseline,
|
||
int *widest_baseline)
|
||
{
|
||
PangoLayout *layout;
|
||
int char_pixels;
|
||
|
||
/* "width-chars" Hard-coded minimum width:
|
||
* - minimum size should be MAX (width-chars, strlen ("..."));
|
||
* - natural size should be MAX (width-chars, strlen (self->text));
|
||
*
|
||
* "max-width-chars" User specified maximum size requisition
|
||
* - minimum size should be MAX (width-chars, 0)
|
||
* - natural size should be MIN (max-width-chars, strlen (self->text))
|
||
*
|
||
* For ellipsizing labels; if max-width-chars is specified: either it is used as
|
||
* a minimum size or the label text as a minimum size (natural size still overflows).
|
||
*
|
||
* For wrapping labels; A reasonable minimum size is useful to naturally layout
|
||
* interfaces automatically. In this case if no "width-chars" is specified, the minimum
|
||
* width will default to the wrap guess that gtk_label_ensure_layout() does.
|
||
*/
|
||
|
||
/* Start off with the pixel extents of an as-wide-as-possible layout */
|
||
layout = gtk_label_get_measuring_layout (self, NULL, -1);
|
||
|
||
if (self->width_chars > -1 || self->max_width_chars > -1)
|
||
char_pixels = get_char_pixels (GTK_WIDGET (self), layout);
|
||
else
|
||
char_pixels = 0;
|
||
|
||
pango_layout_get_extents (layout, NULL, widest);
|
||
widest->width = MAX (widest->width, char_pixels * self->width_chars);
|
||
widest->x = widest->y = 0;
|
||
*widest_baseline = pango_layout_get_baseline (layout) / PANGO_SCALE;
|
||
|
||
if (self->ellipsize || self->wrap)
|
||
{
|
||
/* a layout with width 0 will be as small as humanly possible */
|
||
layout = gtk_label_get_measuring_layout (self,
|
||
layout,
|
||
self->width_chars > -1 ? char_pixels * self->width_chars
|
||
: 0);
|
||
|
||
pango_layout_get_extents (layout, NULL, smallest);
|
||
smallest->width = MAX (smallest->width, char_pixels * self->width_chars);
|
||
smallest->x = smallest->y = 0;
|
||
|
||
*smallest_baseline = pango_layout_get_baseline (layout) / PANGO_SCALE;
|
||
|
||
if (self->max_width_chars > -1 && widest->width > char_pixels * self->max_width_chars)
|
||
{
|
||
layout = gtk_label_get_measuring_layout (self,
|
||
layout,
|
||
MAX (smallest->width, char_pixels * self->max_width_chars));
|
||
pango_layout_get_extents (layout, NULL, widest);
|
||
widest->width = MAX (widest->width, char_pixels * self->width_chars);
|
||
widest->x = widest->y = 0;
|
||
|
||
*widest_baseline = pango_layout_get_baseline (layout) / PANGO_SCALE;
|
||
}
|
||
|
||
if (widest->width < smallest->width)
|
||
{
|
||
*smallest = *widest;
|
||
*smallest_baseline = *widest_baseline;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
*smallest = *widest;
|
||
*smallest_baseline = *widest_baseline;
|
||
}
|
||
|
||
g_object_unref (layout);
|
||
}
|
||
|
||
static void
|
||
gtk_label_get_preferred_size (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int *minimum_size,
|
||
int *natural_size,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
PangoRectangle widest_rect;
|
||
PangoRectangle smallest_rect;
|
||
int smallest_baseline;
|
||
int widest_baseline;
|
||
|
||
gtk_label_get_preferred_layout_size (self,
|
||
&smallest_rect, &widest_rect,
|
||
&smallest_baseline, &widest_baseline);
|
||
|
||
widest_rect.width = PANGO_PIXELS_CEIL (widest_rect.width);
|
||
widest_rect.height = PANGO_PIXELS_CEIL (widest_rect.height);
|
||
|
||
smallest_rect.width = PANGO_PIXELS_CEIL (smallest_rect.width);
|
||
smallest_rect.height = PANGO_PIXELS_CEIL (smallest_rect.height);
|
||
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
/* Normal desired width */
|
||
*minimum_size = smallest_rect.width;
|
||
*natural_size = widest_rect.width;
|
||
|
||
if (minimum_baseline)
|
||
*minimum_baseline = -1;
|
||
|
||
if (natural_baseline)
|
||
*natural_baseline = -1;
|
||
}
|
||
else /* GTK_ORIENTATION_VERTICAL */
|
||
{
|
||
if (smallest_rect.height < widest_rect.height)
|
||
{
|
||
*minimum_size = smallest_rect.height;
|
||
*natural_size = widest_rect.height;
|
||
if (minimum_baseline)
|
||
*minimum_baseline = smallest_baseline;
|
||
if (natural_baseline)
|
||
*natural_baseline = widest_baseline;
|
||
}
|
||
else
|
||
{
|
||
*minimum_size = widest_rect.height;
|
||
*natural_size = smallest_rect.height;
|
||
if (minimum_baseline)
|
||
*minimum_baseline = widest_baseline;
|
||
if (natural_baseline)
|
||
*natural_baseline = smallest_baseline;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
int for_size,
|
||
int *minimum,
|
||
int *natural,
|
||
int *minimum_baseline,
|
||
int *natural_baseline)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
if (orientation == GTK_ORIENTATION_VERTICAL && for_size != -1 && self->wrap)
|
||
{
|
||
gtk_label_clear_layout (self);
|
||
|
||
get_height_for_width (self, for_size, minimum, natural, minimum_baseline, natural_baseline);
|
||
}
|
||
else
|
||
gtk_label_get_preferred_size (widget, orientation, minimum, natural, minimum_baseline, natural_baseline);
|
||
}
|
||
|
||
static void
|
||
get_layout_location (GtkLabel *self,
|
||
int *xp,
|
||
int *yp)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
int req_width, x, y;
|
||
int req_height;
|
||
float xalign, yalign;
|
||
PangoRectangle logical;
|
||
int baseline, layout_baseline, baseline_offset;
|
||
int label_width, label_height;
|
||
|
||
xalign = self->xalign;
|
||
yalign = self->yalign;
|
||
|
||
if (_gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
|
||
xalign = 1.0 - xalign;
|
||
|
||
pango_layout_get_extents (self->layout, NULL, &logical);
|
||
|
||
pango_extents_to_pixels (&logical, NULL);
|
||
|
||
req_width = logical.width;
|
||
req_height = logical.height;
|
||
|
||
label_width = gtk_widget_get_width (widget);
|
||
label_height = gtk_widget_get_height (widget);
|
||
|
||
baseline = gtk_widget_get_allocated_baseline (widget);
|
||
|
||
x = floor ((xalign * (label_width - req_width)) - logical.x);
|
||
|
||
baseline_offset = 0;
|
||
if (baseline != -1)
|
||
{
|
||
layout_baseline = pango_layout_get_baseline (self->layout) / PANGO_SCALE;
|
||
baseline_offset = baseline - layout_baseline;
|
||
yalign = 0.0; /* Can't support yalign while baseline aligning */
|
||
}
|
||
|
||
/* bgo#315462 - For single-line labels, *do* align the requisition with
|
||
* respect to the allocation, even if we are under-allocated. For multi-line
|
||
* labels, always show the top of the text when they are under-allocated. The
|
||
* rationale is this:
|
||
*
|
||
* - Single-line labels appear in GtkButtons, and it is very easy to get them
|
||
* to be smaller than their requisition. The button may clip the label, but
|
||
* the label will still be able to show most of itself and the focus
|
||
* rectangle. Also, it is fairly easy to read a single line of clipped text.
|
||
*
|
||
* - Multi-line labels should not be clipped to showing "something in the
|
||
* middle". You want to read the first line, at least, to get some context.
|
||
*/
|
||
if (pango_layout_get_line_count (self->layout) == 1)
|
||
y = floor ((label_height - req_height) * yalign) + baseline_offset;
|
||
else
|
||
y = floor (MAX ((label_height - req_height) * yalign, 0)) + baseline_offset;
|
||
|
||
if (xp)
|
||
*xp = x;
|
||
|
||
if (yp)
|
||
*yp = y;
|
||
}
|
||
|
||
static void
|
||
gtk_label_size_allocate (GtkWidget *widget,
|
||
int width,
|
||
int height,
|
||
int baseline)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
if (self->layout)
|
||
{
|
||
if (self->ellipsize || self->wrap)
|
||
pango_layout_set_width (self->layout, width * PANGO_SCALE);
|
||
else
|
||
pango_layout_set_width (self->layout, -1);
|
||
}
|
||
|
||
if (self->popup_menu)
|
||
gtk_popover_present (GTK_POPOVER (self->popup_menu));
|
||
}
|
||
|
||
static void
|
||
gtk_label_update_cursor (GtkLabel *self)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
|
||
if (!self->select_info)
|
||
return;
|
||
|
||
if (gtk_widget_is_sensitive (widget))
|
||
{
|
||
if (self->select_info->active_link)
|
||
gtk_widget_set_cursor_from_name (widget, "pointer");
|
||
else if (self->select_info->selectable)
|
||
gtk_widget_set_cursor_from_name (widget, "text");
|
||
else
|
||
gtk_widget_set_cursor (widget, NULL);
|
||
}
|
||
else
|
||
gtk_widget_set_cursor (widget, NULL);
|
||
}
|
||
|
||
static void
|
||
update_link_state (GtkLabel *self)
|
||
{
|
||
GtkStateFlags state;
|
||
guint i;
|
||
|
||
if (!self->select_info)
|
||
return;
|
||
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &self->select_info->links[i];
|
||
|
||
state = gtk_widget_get_state_flags (GTK_WIDGET (self));
|
||
if (link->visited)
|
||
state |= GTK_STATE_FLAG_VISITED;
|
||
else
|
||
state |= GTK_STATE_FLAG_LINK;
|
||
if (link == self->select_info->active_link)
|
||
{
|
||
if (self->select_info->link_clicked)
|
||
state |= GTK_STATE_FLAG_ACTIVE;
|
||
else
|
||
state |= GTK_STATE_FLAG_PRELIGHT;
|
||
}
|
||
gtk_css_node_set_state (link->cssnode, state);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_state_flags_changed (GtkWidget *widget,
|
||
GtkStateFlags prev_state)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
if (self->select_info)
|
||
{
|
||
if (!gtk_widget_is_sensitive (widget))
|
||
gtk_label_select_region (self, 0, 0);
|
||
|
||
gtk_label_update_cursor (self);
|
||
update_link_state (self);
|
||
}
|
||
|
||
if (GTK_WIDGET_CLASS (gtk_label_parent_class)->state_flags_changed)
|
||
GTK_WIDGET_CLASS (gtk_label_parent_class)->state_flags_changed (widget, prev_state);
|
||
}
|
||
|
||
static void
|
||
gtk_label_css_changed (GtkWidget *widget,
|
||
GtkCssStyleChange *change)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
gboolean attrs_affected;
|
||
PangoAttrList *new_attrs = NULL;
|
||
|
||
GTK_WIDGET_CLASS (gtk_label_parent_class)->css_changed (widget, change);
|
||
|
||
if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_TEXT_ATTRS))
|
||
{
|
||
new_attrs = gtk_css_style_get_pango_attributes (gtk_css_style_change_get_new_style (change));
|
||
attrs_affected = (self->layout && pango_layout_get_attributes (self->layout)) ||
|
||
new_attrs;
|
||
}
|
||
else
|
||
attrs_affected = FALSE;
|
||
|
||
if (change == NULL || attrs_affected || (self->select_info && self->select_info->links))
|
||
{
|
||
gtk_label_update_layout_attributes (self, new_attrs);
|
||
|
||
if (attrs_affected)
|
||
gtk_widget_queue_draw (widget);
|
||
}
|
||
}
|
||
|
||
static PangoDirection
|
||
get_cursor_direction (GtkLabel *self)
|
||
{
|
||
GSList *l;
|
||
|
||
g_assert (self->select_info);
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
for (l = pango_layout_get_lines_readonly (self->layout); l; l = l->next)
|
||
{
|
||
PangoLayoutLine *line = l->data;
|
||
|
||
/* If self->select_info->selection_end is at the very end of
|
||
* the line, we don't know if the cursor is on this line or
|
||
* the next without looking ahead at the next line. (End
|
||
* of paragraph is different from line break.) But it's
|
||
* definitely in this paragraph, which is good enough
|
||
* to figure out the resolved direction.
|
||
*/
|
||
if (line->start_index + line->length >= self->select_info->selection_end)
|
||
return line->resolved_dir;
|
||
}
|
||
|
||
return PANGO_DIRECTION_LTR;
|
||
}
|
||
|
||
static GtkLabelLink *
|
||
gtk_label_get_focus_link (GtkLabel *self,
|
||
int *out_index)
|
||
{
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
int link_index;
|
||
|
||
if (!info ||
|
||
info->selection_anchor != info->selection_end)
|
||
goto nope;
|
||
|
||
link_index = _gtk_label_get_link_at (self, info->selection_anchor);
|
||
|
||
if (link_index != -1)
|
||
{
|
||
if (out_index)
|
||
*out_index = link_index;
|
||
|
||
return &info->links[link_index];
|
||
}
|
||
|
||
nope:
|
||
if (out_index)
|
||
*out_index = -1;
|
||
return NULL;
|
||
}
|
||
|
||
#define GRAPHENE_RECT_FROM_RECT(_r) (GRAPHENE_RECT_INIT ((_r)->x, (_r)->y, (_r)->width, (_r)->height))
|
||
|
||
static void
|
||
gtk_label_snapshot (GtkWidget *widget,
|
||
GtkSnapshot *snapshot)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkLabelSelectionInfo *info;
|
||
GtkStyleContext *context;
|
||
int lx, ly;
|
||
int width, height, x;
|
||
|
||
info = self->select_info;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
context = _gtk_widget_get_style_context (widget);
|
||
|
||
width = gtk_widget_get_width (widget);
|
||
height = gtk_widget_get_height (widget);
|
||
x = 0;
|
||
|
||
if (self->text && (*self->text != '\0'))
|
||
{
|
||
get_layout_location (self, &lx, &ly);
|
||
|
||
gtk_snapshot_render_layout (snapshot, context, lx, ly, self->layout);
|
||
|
||
if (info && (info->selection_anchor != info->selection_end))
|
||
{
|
||
int range[2];
|
||
cairo_region_t *range_clip;
|
||
cairo_rectangle_int_t clip_rect;
|
||
int i;
|
||
|
||
range[0] = info->selection_anchor;
|
||
range[1] = info->selection_end;
|
||
|
||
if (range[0] > range[1])
|
||
{
|
||
int tmp = range[0];
|
||
range[0] = range[1];
|
||
range[1] = tmp;
|
||
}
|
||
|
||
gtk_style_context_save_to_node (context, info->selection_node);
|
||
|
||
range_clip = gdk_pango_layout_get_clip_region (self->layout, lx, ly, range, 1);
|
||
for (i = 0; i < cairo_region_num_rectangles (range_clip); i++)
|
||
{
|
||
cairo_region_get_rectangle (range_clip, i, &clip_rect);
|
||
|
||
gtk_snapshot_push_clip (snapshot, &GRAPHENE_RECT_FROM_RECT (&clip_rect));
|
||
gtk_snapshot_render_background (snapshot, context, x, 0, width, height);
|
||
gtk_snapshot_render_layout (snapshot, context, lx, ly, self->layout);
|
||
gtk_snapshot_pop (snapshot);
|
||
}
|
||
|
||
cairo_region_destroy (range_clip);
|
||
|
||
gtk_style_context_restore (context);
|
||
}
|
||
else if (info)
|
||
{
|
||
GtkLabelLink *focus_link;
|
||
GtkLabelLink *active_link;
|
||
int range[2];
|
||
cairo_region_t *range_clip;
|
||
cairo_rectangle_int_t clip_rect;
|
||
int i;
|
||
GdkRectangle rect;
|
||
|
||
if (info->selectable &&
|
||
gtk_widget_has_focus (widget) &&
|
||
gtk_widget_is_drawable (widget))
|
||
{
|
||
PangoDirection cursor_direction;
|
||
|
||
cursor_direction = get_cursor_direction (self);
|
||
gtk_snapshot_render_insertion_cursor (snapshot, context,
|
||
lx, ly,
|
||
self->layout, self->select_info->selection_end,
|
||
cursor_direction);
|
||
}
|
||
|
||
focus_link = gtk_label_get_focus_link (self, NULL);
|
||
active_link = info->active_link;
|
||
|
||
if (active_link)
|
||
{
|
||
range[0] = active_link->start;
|
||
range[1] = active_link->end;
|
||
|
||
gtk_style_context_save_to_node (context, active_link->cssnode);
|
||
|
||
range_clip = gdk_pango_layout_get_clip_region (self->layout, lx, ly, range, 1);
|
||
for (i = 0; i < cairo_region_num_rectangles (range_clip); i++)
|
||
{
|
||
cairo_region_get_rectangle (range_clip, i, &clip_rect);
|
||
|
||
gtk_snapshot_push_clip (snapshot, &GRAPHENE_RECT_FROM_RECT (&clip_rect));
|
||
gtk_snapshot_render_background (snapshot, context, x, 0, width, height);
|
||
gtk_snapshot_render_layout (snapshot, context, lx, ly, self->layout);
|
||
gtk_snapshot_pop (snapshot);
|
||
}
|
||
|
||
cairo_region_destroy (range_clip);
|
||
|
||
gtk_style_context_restore (context);
|
||
}
|
||
|
||
if (focus_link && gtk_widget_has_visible_focus (widget))
|
||
{
|
||
range[0] = focus_link->start;
|
||
range[1] = focus_link->end;
|
||
|
||
gtk_style_context_save_to_node (context, focus_link->cssnode);
|
||
|
||
range_clip = gdk_pango_layout_get_clip_region (self->layout, lx, ly, range, 1);
|
||
cairo_region_get_extents (range_clip, &rect);
|
||
|
||
gtk_snapshot_render_focus (snapshot, context, rect.x, rect.y, rect.width, rect.height);
|
||
|
||
cairo_region_destroy (range_clip);
|
||
|
||
gtk_style_context_restore (context);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_text_with_mnemonic:
|
||
* @self: a #GtkLabel
|
||
* @str: a string
|
||
*
|
||
* Sets the label’s text from the string @str.
|
||
* If characters in @str are preceded by an underscore, they are underlined
|
||
* indicating that they represent a keyboard accelerator called a mnemonic.
|
||
* The mnemonic key can be used to activate another widget, chosen
|
||
* automatically, or explicitly using gtk_label_set_mnemonic_widget().
|
||
**/
|
||
void
|
||
gtk_label_set_text_with_mnemonic (GtkLabel *self,
|
||
const char *str)
|
||
{
|
||
gboolean changed;
|
||
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
g_return_if_fail (str != NULL);
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
changed = gtk_label_set_label_internal (self, str);
|
||
changed = gtk_label_set_use_markup_internal (self, FALSE) || changed;
|
||
changed = gtk_label_set_use_underline_internal (self, TRUE) || changed;
|
||
|
||
if (changed)
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
static void
|
||
gtk_label_unrealize (GtkWidget *widget)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
if (self->select_info &&
|
||
self->select_info->provider)
|
||
{
|
||
GdkClipboard *clipboard = gtk_widget_get_primary_clipboard (widget);
|
||
|
||
if (gdk_clipboard_get_content (clipboard) == self->select_info->provider)
|
||
gdk_clipboard_set_content (clipboard, NULL);
|
||
}
|
||
|
||
GTK_WIDGET_CLASS (gtk_label_parent_class)->unrealize (widget);
|
||
}
|
||
|
||
static gboolean
|
||
get_layout_index (GtkLabel *self,
|
||
int x,
|
||
int y,
|
||
int *index)
|
||
{
|
||
int trailing = 0;
|
||
const char *cluster;
|
||
const char *cluster_end;
|
||
gboolean inside;
|
||
int lx, ly;
|
||
|
||
*index = 0;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
get_layout_location (self, &lx, &ly);
|
||
|
||
/* Translate x/y to layout position */
|
||
x -= lx;
|
||
y -= ly;
|
||
|
||
x *= PANGO_SCALE;
|
||
y *= PANGO_SCALE;
|
||
|
||
inside = pango_layout_xy_to_index (self->layout,
|
||
x, y,
|
||
index, &trailing);
|
||
|
||
cluster = self->text + *index;
|
||
cluster_end = cluster;
|
||
while (trailing)
|
||
{
|
||
cluster_end = g_utf8_next_char (cluster_end);
|
||
--trailing;
|
||
}
|
||
|
||
*index += (cluster_end - cluster);
|
||
|
||
return inside;
|
||
}
|
||
|
||
static gboolean
|
||
range_is_in_ellipsis_full (GtkLabel *self,
|
||
int range_start,
|
||
int range_end,
|
||
int *ellipsis_start,
|
||
int *ellipsis_end)
|
||
{
|
||
PangoLayoutIter *iter;
|
||
gboolean in_ellipsis;
|
||
|
||
if (!self->ellipsize)
|
||
return FALSE;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
if (!pango_layout_is_ellipsized (self->layout))
|
||
return FALSE;
|
||
|
||
iter = pango_layout_get_iter (self->layout);
|
||
|
||
in_ellipsis = FALSE;
|
||
|
||
do {
|
||
PangoLayoutRun *run;
|
||
|
||
run = pango_layout_iter_get_run_readonly (iter);
|
||
if (run)
|
||
{
|
||
PangoItem *item;
|
||
|
||
item = ((PangoGlyphItem*)run)->item;
|
||
|
||
if (item->offset <= range_start && range_end <= item->offset + item->length)
|
||
{
|
||
if (item->analysis.flags & PANGO_ANALYSIS_FLAG_IS_ELLIPSIS)
|
||
{
|
||
if (ellipsis_start)
|
||
*ellipsis_start = item->offset;
|
||
if (ellipsis_end)
|
||
*ellipsis_end = item->offset + item->length;
|
||
in_ellipsis = TRUE;
|
||
}
|
||
break;
|
||
}
|
||
else if (item->offset + item->length >= range_end)
|
||
break;
|
||
}
|
||
} while (pango_layout_iter_next_run (iter));
|
||
|
||
pango_layout_iter_free (iter);
|
||
|
||
return in_ellipsis;
|
||
}
|
||
|
||
static gboolean
|
||
range_is_in_ellipsis (GtkLabel *self,
|
||
int range_start,
|
||
int range_end)
|
||
{
|
||
return range_is_in_ellipsis_full (self, range_start, range_end, NULL, NULL);
|
||
}
|
||
|
||
static void
|
||
gtk_label_select_word (GtkLabel *self)
|
||
{
|
||
int min, max;
|
||
|
||
int start_index = gtk_label_move_backward_word (self, self->select_info->selection_end);
|
||
int end_index = gtk_label_move_forward_word (self, self->select_info->selection_end);
|
||
|
||
min = MIN (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
max = MAX (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
|
||
min = MIN (min, start_index);
|
||
max = MAX (max, end_index);
|
||
|
||
gtk_label_select_region_index (self, min, max);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_grab_focus (GtkWidget *widget)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
gboolean select_on_focus;
|
||
GtkWidget *prev_focus;
|
||
|
||
if (self->select_info == NULL)
|
||
return FALSE;
|
||
|
||
prev_focus = gtk_root_get_focus (gtk_widget_get_root (widget));
|
||
|
||
if (!GTK_WIDGET_CLASS (gtk_label_parent_class)->grab_focus (widget))
|
||
return FALSE;
|
||
|
||
if (self->select_info->selectable)
|
||
{
|
||
g_object_get (gtk_widget_get_settings (widget),
|
||
"gtk-label-select-on-focus",
|
||
&select_on_focus,
|
||
NULL);
|
||
|
||
if (select_on_focus && !self->in_click &&
|
||
!(prev_focus && gtk_widget_is_ancestor (prev_focus, widget)))
|
||
gtk_label_select_region (self, 0, -1);
|
||
}
|
||
else
|
||
{
|
||
if (self->select_info->links && !self->in_click &&
|
||
!(prev_focus && gtk_widget_is_ancestor (prev_focus, widget)))
|
||
{
|
||
guint i;
|
||
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &self->select_info->links[i];
|
||
|
||
if (!range_is_in_ellipsis (self, link->start, link->end))
|
||
{
|
||
self->select_info->selection_anchor = link->start;
|
||
self->select_info->selection_end = link->start;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_focus (GtkWidget *widget,
|
||
GtkDirectionType direction)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
GtkLabelLink *focus_link;
|
||
|
||
if (!gtk_widget_is_focus (widget))
|
||
{
|
||
gtk_widget_grab_focus (widget);
|
||
if (info)
|
||
{
|
||
focus_link = gtk_label_get_focus_link (self, NULL);
|
||
if (focus_link && direction == GTK_DIR_TAB_BACKWARD)
|
||
{
|
||
int i;
|
||
for (i = info->n_links - 1; i >= 0; i--)
|
||
{
|
||
focus_link = &info->links[i];
|
||
if (!range_is_in_ellipsis (self, focus_link->start, focus_link->end))
|
||
{
|
||
info->selection_anchor = focus_link->start;
|
||
info->selection_end = focus_link->start;
|
||
}
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
if (!info)
|
||
return FALSE;
|
||
|
||
if (info->selectable)
|
||
{
|
||
int index;
|
||
|
||
if (info->selection_anchor != info->selection_end)
|
||
goto out;
|
||
|
||
index = info->selection_anchor;
|
||
|
||
if (direction == GTK_DIR_TAB_FORWARD)
|
||
{
|
||
guint i;
|
||
for (i = 0; i < info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &info->links[i];
|
||
|
||
if (link->start > index)
|
||
{
|
||
if (!range_is_in_ellipsis (self, link->start, link->end))
|
||
{
|
||
gtk_label_select_region_index (self, link->start, link->start);
|
||
return TRUE;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
else if (direction == GTK_DIR_TAB_BACKWARD)
|
||
{
|
||
int i;
|
||
for (i = info->n_links - 1; i >= 0; i--)
|
||
{
|
||
GtkLabelLink *link = &info->links[i];
|
||
|
||
if (link->end < index)
|
||
{
|
||
if (!range_is_in_ellipsis (self, link->start, link->end))
|
||
{
|
||
gtk_label_select_region_index (self, link->start, link->start);
|
||
return TRUE;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
goto out;
|
||
}
|
||
else
|
||
{
|
||
int focus_link_index;
|
||
int new_index = -1;
|
||
int i;
|
||
|
||
if (info->n_links == 0)
|
||
goto out;
|
||
|
||
focus_link = gtk_label_get_focus_link (self, &focus_link_index);
|
||
|
||
if (!focus_link)
|
||
goto out;
|
||
|
||
switch (direction)
|
||
{
|
||
case GTK_DIR_TAB_FORWARD:
|
||
if (focus_link)
|
||
new_index = (focus_link_index + 1) % info->n_links;
|
||
else
|
||
new_index = 0;
|
||
|
||
for (i = new_index; i < info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &info->links[i];
|
||
if (!range_is_in_ellipsis (self, link->start, link->end))
|
||
break;
|
||
}
|
||
break;
|
||
|
||
case GTK_DIR_TAB_BACKWARD:
|
||
if (focus_link)
|
||
new_index = focus_link_index == 0 ? info->n_links - 1 : focus_link_index - 1;
|
||
else
|
||
new_index = info->n_links - 1;
|
||
|
||
for (i = new_index; i >= 0; i--)
|
||
{
|
||
const GtkLabelLink *link = &info->links[i];
|
||
if (!range_is_in_ellipsis (self, link->start, link->end))
|
||
break;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
case GTK_DIR_UP:
|
||
case GTK_DIR_DOWN:
|
||
case GTK_DIR_LEFT:
|
||
case GTK_DIR_RIGHT:
|
||
goto out;
|
||
}
|
||
|
||
if (new_index != -1)
|
||
{
|
||
focus_link = &info->links[new_index];
|
||
info->selection_anchor = focus_link->start;
|
||
info->selection_end = focus_link->start;
|
||
gtk_widget_queue_draw (widget);
|
||
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
out:
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_label_click_gesture_pressed (GtkGestureClick *gesture,
|
||
int n_press,
|
||
double widget_x,
|
||
double widget_y,
|
||
GtkLabel *self)
|
||
{
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
GdkEventSequence *sequence;
|
||
GdkEvent *event;
|
||
guint button;
|
||
|
||
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
|
||
gtk_label_update_active_link (widget, widget_x, widget_y);
|
||
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
|
||
|
||
if (info->active_link)
|
||
{
|
||
if (gdk_event_triggers_context_menu (event))
|
||
{
|
||
info->link_clicked = TRUE;
|
||
update_link_state (self);
|
||
gtk_label_do_popup (self, widget_x, widget_y);
|
||
return;
|
||
}
|
||
else if (button == GDK_BUTTON_PRIMARY)
|
||
{
|
||
info->link_clicked = TRUE;
|
||
update_link_state (self);
|
||
gtk_widget_queue_draw (widget);
|
||
if (!info->selectable)
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (!info->selectable)
|
||
{
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
|
||
return;
|
||
}
|
||
|
||
info->in_drag = FALSE;
|
||
info->select_words = FALSE;
|
||
|
||
if (gdk_event_triggers_context_menu (event))
|
||
gtk_label_do_popup (self, widget_x, widget_y);
|
||
else if (button == GDK_BUTTON_PRIMARY)
|
||
{
|
||
if (!gtk_widget_has_focus (widget))
|
||
{
|
||
self->in_click = TRUE;
|
||
gtk_widget_grab_focus (widget);
|
||
self->in_click = FALSE;
|
||
}
|
||
|
||
if (n_press == 3)
|
||
gtk_label_select_region_index (self, 0, strlen (self->text));
|
||
else if (n_press == 2)
|
||
{
|
||
info->select_words = TRUE;
|
||
gtk_label_select_word (self);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
|
||
return;
|
||
}
|
||
|
||
if (n_press >= 3)
|
||
gtk_event_controller_reset (GTK_EVENT_CONTROLLER (gesture));
|
||
}
|
||
|
||
static void
|
||
gtk_label_click_gesture_released (GtkGestureClick *gesture,
|
||
int n_press,
|
||
double x,
|
||
double y,
|
||
GtkLabel *self)
|
||
{
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
GdkEventSequence *sequence;
|
||
int index;
|
||
|
||
if (info == NULL)
|
||
return;
|
||
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
|
||
if (!gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
|
||
return;
|
||
|
||
if (n_press != 1)
|
||
return;
|
||
|
||
if (info->in_drag)
|
||
{
|
||
info->in_drag = 0;
|
||
get_layout_index (self, x, y, &index);
|
||
gtk_label_select_region_index (self, index, index);
|
||
}
|
||
else if (info->active_link &&
|
||
info->selection_anchor == info->selection_end &&
|
||
info->link_clicked)
|
||
{
|
||
emit_activate_link (self, info->active_link);
|
||
info->link_clicked = FALSE;
|
||
}
|
||
}
|
||
|
||
static GdkPaintable *
|
||
get_selection_paintable (GtkLabel *self)
|
||
{
|
||
if ((self->select_info->selection_anchor !=
|
||
self->select_info->selection_end) &&
|
||
self->text)
|
||
{
|
||
int start, end;
|
||
int len;
|
||
|
||
start = MIN (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
end = MAX (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
|
||
len = strlen (self->text);
|
||
|
||
if (end > len)
|
||
end = len;
|
||
|
||
if (start > len)
|
||
start = len;
|
||
|
||
return gtk_text_util_create_drag_icon (GTK_WIDGET (self), self->text + start, end - start);
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
gtk_label_drag_gesture_begin (GtkGestureDrag *gesture,
|
||
double start_x,
|
||
double start_y,
|
||
GtkLabel *self)
|
||
{
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
GdkModifierType state_mask;
|
||
GdkEventSequence *sequence;
|
||
GdkEvent *event;
|
||
int min, max, index;
|
||
|
||
if (!info || !info->selectable)
|
||
{
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
|
||
return;
|
||
}
|
||
|
||
get_layout_index (self, start_x, start_y, &index);
|
||
min = MIN (info->selection_anchor, info->selection_end);
|
||
max = MAX (info->selection_anchor, info->selection_end);
|
||
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
|
||
state_mask = gdk_event_get_modifier_state (event);
|
||
|
||
if ((info->selection_anchor != info->selection_end) &&
|
||
(state_mask & GDK_SHIFT_MASK))
|
||
{
|
||
if (index > min && index < max)
|
||
{
|
||
/* truncate selection, but keep it as big as possible */
|
||
if (index - min > max - index)
|
||
max = index;
|
||
else
|
||
min = index;
|
||
}
|
||
else
|
||
{
|
||
/* extend (same as motion) */
|
||
min = MIN (min, index);
|
||
max = MAX (max, index);
|
||
}
|
||
|
||
/* ensure the anchor is opposite index */
|
||
if (index == min)
|
||
{
|
||
int tmp = min;
|
||
min = max;
|
||
max = tmp;
|
||
}
|
||
|
||
gtk_label_select_region_index (self, min, max);
|
||
}
|
||
else
|
||
{
|
||
if (min < max && min <= index && index <= max)
|
||
{
|
||
info->in_drag = TRUE;
|
||
info->drag_start_x = start_x;
|
||
info->drag_start_y = start_y;
|
||
}
|
||
else
|
||
/* start a replacement */
|
||
gtk_label_select_region_index (self, index, index);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_drag_gesture_update (GtkGestureDrag *gesture,
|
||
double offset_x,
|
||
double offset_y,
|
||
GtkLabel *self)
|
||
{
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
GdkEventSequence *sequence;
|
||
double x, y;
|
||
int index;
|
||
|
||
if (info == NULL || !info->selectable)
|
||
return;
|
||
|
||
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
|
||
gtk_gesture_get_point (GTK_GESTURE (gesture), sequence, &x, &y);
|
||
|
||
if (info->in_drag)
|
||
{
|
||
if (gtk_drag_check_threshold (widget, info->drag_start_x, info->drag_start_y, x, y))
|
||
{
|
||
GdkDrag *drag;
|
||
GdkSurface *surface;
|
||
GdkDevice *device;
|
||
|
||
surface = gtk_native_get_surface (gtk_widget_get_native (widget));
|
||
device = gtk_gesture_get_device (GTK_GESTURE (gesture));
|
||
|
||
drag = gdk_drag_begin (surface,
|
||
device,
|
||
info->provider,
|
||
GDK_ACTION_COPY,
|
||
info->drag_start_x,
|
||
info->drag_start_y);
|
||
|
||
gtk_drag_icon_set_from_paintable (drag, get_selection_paintable (self), 0, 0);
|
||
|
||
g_object_unref (drag);
|
||
|
||
info->in_drag = FALSE;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
get_layout_index (self, x, y, &index);
|
||
|
||
if (index != info->selection_anchor)
|
||
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
|
||
|
||
if (info->select_words)
|
||
{
|
||
int min, max;
|
||
int old_min, old_max;
|
||
int anchor, end;
|
||
|
||
min = gtk_label_move_backward_word (self, index);
|
||
max = gtk_label_move_forward_word (self, index);
|
||
|
||
anchor = info->selection_anchor;
|
||
end = info->selection_end;
|
||
|
||
old_min = MIN (anchor, end);
|
||
old_max = MAX (anchor, end);
|
||
|
||
if (min < old_min)
|
||
{
|
||
anchor = min;
|
||
end = old_max;
|
||
}
|
||
else if (old_max < max)
|
||
{
|
||
anchor = max;
|
||
end = old_min;
|
||
}
|
||
else if (anchor == old_min)
|
||
{
|
||
if (anchor != min)
|
||
anchor = max;
|
||
}
|
||
else
|
||
{
|
||
if (anchor != max)
|
||
anchor = min;
|
||
}
|
||
|
||
gtk_label_select_region_index (self, anchor, end);
|
||
}
|
||
else
|
||
gtk_label_select_region_index (self, info->selection_anchor, index);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_update_active_link (GtkWidget *widget,
|
||
double x,
|
||
double y)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
int index;
|
||
|
||
if (info == NULL)
|
||
return;
|
||
|
||
if (info->links && !info->in_drag)
|
||
{
|
||
GtkLabelLink *link;
|
||
gboolean found = FALSE;
|
||
|
||
if (info->selection_anchor == info->selection_end)
|
||
{
|
||
if (get_layout_index (self, x, y, &index))
|
||
{
|
||
const int link_index = _gtk_label_get_link_at (self, index);
|
||
|
||
if (link_index != -1)
|
||
{
|
||
link = &info->links[link_index];
|
||
|
||
if (!range_is_in_ellipsis (self, link->start, link->end))
|
||
found = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (found)
|
||
{
|
||
if (info->active_link != link)
|
||
{
|
||
info->link_clicked = FALSE;
|
||
info->active_link = link;
|
||
update_link_state (self);
|
||
gtk_label_update_cursor (self);
|
||
gtk_widget_queue_draw (widget);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (info->active_link != NULL)
|
||
{
|
||
info->link_clicked = FALSE;
|
||
info->active_link = NULL;
|
||
update_link_state (self);
|
||
gtk_label_update_cursor (self);
|
||
gtk_widget_queue_draw (widget);
|
||
}
|
||
}
|
||
|
||
gtk_label_update_actions (self);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_motion (GtkEventControllerMotion *controller,
|
||
double x,
|
||
double y,
|
||
gpointer data)
|
||
{
|
||
gtk_label_update_active_link (GTK_WIDGET (data), x, y);
|
||
}
|
||
|
||
static void
|
||
gtk_label_leave (GtkEventControllerMotion *controller,
|
||
gpointer data)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (data);
|
||
|
||
if (self->select_info)
|
||
{
|
||
self->select_info->active_link = NULL;
|
||
gtk_label_update_cursor (self);
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
#define GTK_TYPE_LABEL_CONTENT (gtk_label_content_get_type ())
|
||
#define GTK_LABEL_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_LABEL_CONTENT, GtkLabelContent))
|
||
#define GTK_IS_LABEL_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_LABEL_CONTENT))
|
||
#define GTK_LABEL_CONTENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_LABEL_CONTENT, GtkLabelContentClass))
|
||
#define GTK_IS_LABEL_CONTENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_LABEL_CONTENT))
|
||
#define GTK_LABEL_CONTENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_LABEL_CONTENT, GtkLabelContentClass))
|
||
|
||
typedef struct _GtkLabelContent GtkLabelContent;
|
||
typedef struct _GtkLabelContentClass GtkLabelContentClass;
|
||
|
||
struct _GtkLabelContent
|
||
{
|
||
GdkContentProvider parent;
|
||
|
||
GtkLabel *label;
|
||
};
|
||
|
||
struct _GtkLabelContentClass
|
||
{
|
||
GdkContentProviderClass parent_class;
|
||
};
|
||
|
||
GType gtk_label_content_get_type (void) G_GNUC_CONST;
|
||
|
||
G_DEFINE_TYPE (GtkLabelContent, gtk_label_content, GDK_TYPE_CONTENT_PROVIDER)
|
||
|
||
static GdkContentFormats *
|
||
gtk_label_content_ref_formats (GdkContentProvider *provider)
|
||
{
|
||
GtkLabelContent *content = GTK_LABEL_CONTENT (provider);
|
||
|
||
if (content->label)
|
||
return gdk_content_formats_new_for_gtype (G_TYPE_STRING);
|
||
else
|
||
return gdk_content_formats_new (NULL, 0);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_content_get_value (GdkContentProvider *provider,
|
||
GValue *value,
|
||
GError **error)
|
||
{
|
||
GtkLabelContent *content = GTK_LABEL_CONTENT (provider);
|
||
|
||
if (G_VALUE_HOLDS (value, G_TYPE_STRING) &&
|
||
content->label != NULL)
|
||
{
|
||
GtkLabel *self = content->label;
|
||
|
||
if (self->select_info &&
|
||
(self->select_info->selection_anchor !=
|
||
self->select_info->selection_end) &&
|
||
self->text)
|
||
{
|
||
int start, end;
|
||
int len;
|
||
char *str;
|
||
|
||
start = MIN (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
end = MAX (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
|
||
len = strlen (self->text);
|
||
|
||
if (end > len)
|
||
end = len;
|
||
|
||
if (start > len)
|
||
start = len;
|
||
|
||
str = g_strndup (self->text + start, end - start);
|
||
g_value_take_string (value, str);
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
return GDK_CONTENT_PROVIDER_CLASS (gtk_label_content_parent_class)->get_value (provider, value, error);
|
||
}
|
||
|
||
static void
|
||
gtk_label_content_detach (GdkContentProvider *provider,
|
||
GdkClipboard *clipboard)
|
||
{
|
||
GtkLabelContent *content = GTK_LABEL_CONTENT (provider);
|
||
GtkLabel *self = content->label;
|
||
|
||
if (self == NULL || self->select_info == NULL)
|
||
return;
|
||
|
||
self->select_info->selection_anchor = self->select_info->selection_end;
|
||
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
}
|
||
|
||
static void
|
||
gtk_label_content_class_init (GtkLabelContentClass *class)
|
||
{
|
||
GdkContentProviderClass *provider_class = GDK_CONTENT_PROVIDER_CLASS (class);
|
||
|
||
provider_class->ref_formats = gtk_label_content_ref_formats;
|
||
provider_class->get_value = gtk_label_content_get_value;
|
||
provider_class->detach_clipboard = gtk_label_content_detach;
|
||
}
|
||
|
||
static void
|
||
gtk_label_content_init (GtkLabelContent *content)
|
||
{
|
||
}
|
||
|
||
static void
|
||
focus_change (GtkEventControllerFocus *controller,
|
||
GtkLabel *self)
|
||
{
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
}
|
||
|
||
static void
|
||
gtk_label_ensure_select_info (GtkLabel *self)
|
||
{
|
||
if (self->select_info == NULL)
|
||
{
|
||
self->select_info = g_new0 (GtkLabelSelectionInfo, 1);
|
||
|
||
gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
|
||
|
||
self->select_info->drag_gesture = gtk_gesture_drag_new ();
|
||
g_signal_connect (self->select_info->drag_gesture, "drag-begin",
|
||
G_CALLBACK (gtk_label_drag_gesture_begin), self);
|
||
g_signal_connect (self->select_info->drag_gesture, "drag-update",
|
||
G_CALLBACK (gtk_label_drag_gesture_update), self);
|
||
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (self->select_info->drag_gesture), TRUE);
|
||
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->select_info->drag_gesture));
|
||
|
||
self->select_info->click_gesture = gtk_gesture_click_new ();
|
||
g_signal_connect (self->select_info->click_gesture, "pressed",
|
||
G_CALLBACK (gtk_label_click_gesture_pressed), self);
|
||
g_signal_connect (self->select_info->click_gesture, "released",
|
||
G_CALLBACK (gtk_label_click_gesture_released), self);
|
||
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (self->select_info->click_gesture), 0);
|
||
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (self->select_info->click_gesture), TRUE);
|
||
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->select_info->click_gesture));
|
||
|
||
self->select_info->motion_controller = gtk_event_controller_motion_new ();
|
||
g_signal_connect (self->select_info->motion_controller, "motion",
|
||
G_CALLBACK (gtk_label_motion), self);
|
||
g_signal_connect (self->select_info->motion_controller, "leave",
|
||
G_CALLBACK (gtk_label_leave), self);
|
||
gtk_widget_add_controller (GTK_WIDGET (self), self->select_info->motion_controller);
|
||
|
||
self->select_info->focus_controller = gtk_event_controller_focus_new ();
|
||
g_signal_connect (self->select_info->focus_controller, "enter",
|
||
G_CALLBACK (focus_change), self);
|
||
g_signal_connect (self->select_info->focus_controller, "leave",
|
||
G_CALLBACK (focus_change), self);
|
||
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->select_info->focus_controller));
|
||
|
||
self->select_info->provider = g_object_new (GTK_TYPE_LABEL_CONTENT, NULL);
|
||
GTK_LABEL_CONTENT (self->select_info->provider)->label = self;
|
||
|
||
gtk_label_update_cursor (self);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_clear_select_info (GtkLabel *self)
|
||
{
|
||
if (self->select_info == NULL)
|
||
return;
|
||
|
||
if (!self->select_info->selectable && !self->select_info->links)
|
||
{
|
||
gtk_widget_remove_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->select_info->drag_gesture));
|
||
gtk_widget_remove_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->select_info->click_gesture));
|
||
gtk_widget_remove_controller (GTK_WIDGET (self), self->select_info->motion_controller);
|
||
gtk_widget_remove_controller (GTK_WIDGET (self), self->select_info->focus_controller);
|
||
GTK_LABEL_CONTENT (self->select_info->provider)->label = NULL;
|
||
g_object_unref (self->select_info->provider);
|
||
|
||
g_free (self->select_info);
|
||
self->select_info = NULL;
|
||
|
||
gtk_widget_set_cursor (GTK_WIDGET (self), NULL);
|
||
|
||
gtk_widget_set_focusable (GTK_WIDGET (self), FALSE);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_selectable:
|
||
* @self: a #GtkLabel
|
||
* @setting: %TRUE to allow selecting text in the label
|
||
*
|
||
* Selectable labels allow the user to select text from the label, for
|
||
* copy-and-paste.
|
||
**/
|
||
void
|
||
gtk_label_set_selectable (GtkLabel *self,
|
||
gboolean setting)
|
||
{
|
||
gboolean old_setting;
|
||
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
setting = setting != FALSE;
|
||
old_setting = self->select_info && self->select_info->selectable;
|
||
|
||
if (setting)
|
||
{
|
||
gtk_label_ensure_select_info (self);
|
||
self->select_info->selectable = TRUE;
|
||
gtk_label_update_cursor (self);
|
||
}
|
||
else
|
||
{
|
||
if (old_setting)
|
||
{
|
||
/* unselect, to give up the selection */
|
||
gtk_label_select_region (self, 0, 0);
|
||
|
||
self->select_info->selectable = FALSE;
|
||
gtk_label_clear_select_info (self);
|
||
}
|
||
}
|
||
if (setting != old_setting)
|
||
{
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_SELECTABLE]);
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_selectable:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the value set by gtk_label_set_selectable().
|
||
*
|
||
* Returns: %TRUE if the user can copy text from the label
|
||
**/
|
||
gboolean
|
||
gtk_label_get_selectable (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
return self->select_info && self->select_info->selectable;
|
||
}
|
||
|
||
static void
|
||
gtk_label_select_region_index (GtkLabel *self,
|
||
int anchor_index,
|
||
int end_index)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (self->select_info && self->select_info->selectable)
|
||
{
|
||
GdkClipboard *clipboard;
|
||
int s, e;
|
||
|
||
/* Ensure that we treat an ellipsized region like a single
|
||
* character with respect to selection.
|
||
*/
|
||
if (anchor_index < end_index)
|
||
{
|
||
if (range_is_in_ellipsis_full (self, anchor_index, anchor_index + 1, &s, &e))
|
||
{
|
||
if (self->select_info->selection_anchor == s)
|
||
anchor_index = e;
|
||
else
|
||
anchor_index = s;
|
||
}
|
||
if (range_is_in_ellipsis_full (self, end_index - 1, end_index, &s, &e))
|
||
{
|
||
if (self->select_info->selection_end == e)
|
||
end_index = s;
|
||
else
|
||
end_index = e;
|
||
}
|
||
}
|
||
else if (end_index < anchor_index)
|
||
{
|
||
if (range_is_in_ellipsis_full (self, end_index, end_index + 1, &s, &e))
|
||
{
|
||
if (self->select_info->selection_end == s)
|
||
end_index = e;
|
||
else
|
||
end_index = s;
|
||
}
|
||
if (range_is_in_ellipsis_full (self, anchor_index - 1, anchor_index, &s, &e))
|
||
{
|
||
if (self->select_info->selection_anchor == e)
|
||
anchor_index = s;
|
||
else
|
||
anchor_index = e;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (range_is_in_ellipsis_full (self, anchor_index, anchor_index, &s, &e))
|
||
{
|
||
if (self->select_info->selection_anchor == s)
|
||
anchor_index = e;
|
||
else if (self->select_info->selection_anchor == e)
|
||
anchor_index = s;
|
||
else if (anchor_index - s < e - anchor_index)
|
||
anchor_index = s;
|
||
else
|
||
anchor_index = e;
|
||
end_index = anchor_index;
|
||
}
|
||
}
|
||
|
||
if (self->select_info->selection_anchor == anchor_index &&
|
||
self->select_info->selection_end == end_index)
|
||
return;
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
self->select_info->selection_anchor = anchor_index;
|
||
self->select_info->selection_end = end_index;
|
||
|
||
clipboard = gtk_widget_get_primary_clipboard (GTK_WIDGET (self));
|
||
|
||
if (anchor_index != end_index)
|
||
{
|
||
gdk_content_provider_content_changed (self->select_info->provider);
|
||
gdk_clipboard_set_content (clipboard, self->select_info->provider);
|
||
|
||
if (!self->select_info->selection_node)
|
||
{
|
||
GtkCssNode *widget_node;
|
||
|
||
widget_node = gtk_widget_get_css_node (GTK_WIDGET (self));
|
||
self->select_info->selection_node = gtk_css_node_new ();
|
||
gtk_css_node_set_name (self->select_info->selection_node, g_quark_from_static_string ("selection"));
|
||
gtk_css_node_set_parent (self->select_info->selection_node, widget_node);
|
||
gtk_css_node_set_state (self->select_info->selection_node, gtk_css_node_get_state (widget_node));
|
||
g_object_unref (self->select_info->selection_node);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (gdk_clipboard_get_content (clipboard) == self->select_info->provider)
|
||
gdk_clipboard_set_content (clipboard, NULL);
|
||
|
||
if (self->select_info->selection_node)
|
||
{
|
||
gtk_css_node_set_parent (self->select_info->selection_node, NULL);
|
||
self->select_info->selection_node = NULL;
|
||
}
|
||
}
|
||
|
||
gtk_label_update_actions (self);
|
||
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_select_region:
|
||
* @self: a #GtkLabel
|
||
* @start_offset: start offset (in characters not bytes)
|
||
* @end_offset: end offset (in characters not bytes)
|
||
*
|
||
* Selects a range of characters in the label, if the label is selectable.
|
||
* See gtk_label_set_selectable(). If the label is not selectable,
|
||
* this function has no effect. If @start_offset or
|
||
* @end_offset are -1, then the end of the label will be substituted.
|
||
**/
|
||
void
|
||
gtk_label_select_region (GtkLabel *self,
|
||
int start_offset,
|
||
int end_offset)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (self->text && self->select_info)
|
||
{
|
||
if (start_offset < 0)
|
||
start_offset = g_utf8_strlen (self->text, -1);
|
||
|
||
if (end_offset < 0)
|
||
end_offset = g_utf8_strlen (self->text, -1);
|
||
|
||
gtk_label_select_region_index (self,
|
||
g_utf8_offset_to_pointer (self->text, start_offset) - self->text,
|
||
g_utf8_offset_to_pointer (self->text, end_offset) - self->text);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_selection_bounds:
|
||
* @self: a #GtkLabel
|
||
* @start: (out): return location for start of selection, as a character offset
|
||
* @end: (out): return location for end of selection, as a character offset
|
||
*
|
||
* Gets the selected range of characters in the label, returning %TRUE
|
||
* if there’s a selection.
|
||
*
|
||
* Returns: %TRUE if selection is non-empty
|
||
**/
|
||
gboolean
|
||
gtk_label_get_selection_bounds (GtkLabel *self,
|
||
int *start,
|
||
int *end)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
if (self->select_info == NULL)
|
||
{
|
||
/* not a selectable label */
|
||
if (start)
|
||
*start = 0;
|
||
if (end)
|
||
*end = 0;
|
||
|
||
return FALSE;
|
||
}
|
||
else
|
||
{
|
||
int start_index, end_index;
|
||
int start_offset, end_offset;
|
||
int len;
|
||
|
||
start_index = MIN (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
end_index = MAX (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
|
||
len = strlen (self->text);
|
||
|
||
if (end_index > len)
|
||
end_index = len;
|
||
|
||
if (start_index > len)
|
||
start_index = len;
|
||
|
||
start_offset = g_utf8_strlen (self->text, start_index);
|
||
end_offset = g_utf8_strlen (self->text, end_index);
|
||
|
||
if (start_offset > end_offset)
|
||
{
|
||
int tmp = start_offset;
|
||
start_offset = end_offset;
|
||
end_offset = tmp;
|
||
}
|
||
|
||
if (start)
|
||
*start = start_offset;
|
||
|
||
if (end)
|
||
*end = end_offset;
|
||
|
||
return start_offset != end_offset;
|
||
}
|
||
}
|
||
|
||
|
||
/**
|
||
* gtk_label_get_layout:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the #PangoLayout used to display the label.
|
||
* The layout is useful to e.g. convert text positions to
|
||
* pixel positions, in combination with gtk_label_get_layout_offsets().
|
||
* The returned layout is owned by the @label so need not be
|
||
* freed by the caller. The @label is free to recreate its layout at
|
||
* any time, so it should be considered read-only.
|
||
*
|
||
* Returns: (transfer none): the #PangoLayout for this label
|
||
**/
|
||
PangoLayout*
|
||
gtk_label_get_layout (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
return self->layout;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_layout_offsets:
|
||
* @self: a #GtkLabel
|
||
* @x: (out) (optional): location to store X offset of layout, or %NULL
|
||
* @y: (out) (optional): location to store Y offset of layout, or %NULL
|
||
*
|
||
* Obtains the coordinates where the label will draw the #PangoLayout
|
||
* representing the text in the label; useful to convert mouse events
|
||
* into coordinates inside the #PangoLayout, e.g. to take some action
|
||
* if some part of the label is clicked. Remember
|
||
* when using the #PangoLayout functions you need to convert to
|
||
* and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
|
||
**/
|
||
void
|
||
gtk_label_get_layout_offsets (GtkLabel *self,
|
||
int *x,
|
||
int *y)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
get_layout_location (self, x, y);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_use_markup:
|
||
* @self: a #GtkLabel
|
||
* @setting: %TRUE if the label’s text should be parsed for markup.
|
||
*
|
||
* Sets whether the text of the label contains markup in
|
||
* [Pango’s text markup language][PangoMarkupFormat].
|
||
* See gtk_label_set_markup().
|
||
**/
|
||
void
|
||
gtk_label_set_use_markup (GtkLabel *self,
|
||
gboolean setting)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
if (gtk_label_set_use_markup_internal (self, !!setting))
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_use_markup:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns whether the label’s text is interpreted as marked up with
|
||
* the [Pango text markup language][PangoMarkupFormat].
|
||
* See gtk_label_set_use_markup ().
|
||
*
|
||
* Returns: %TRUE if the label’s text will be parsed for markup.
|
||
**/
|
||
gboolean
|
||
gtk_label_get_use_markup (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
return self->use_markup;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_use_underline:
|
||
* @self: a #GtkLabel
|
||
* @setting: %TRUE if underlines in the text indicate mnemonics
|
||
*
|
||
* If true, an underline in the text indicates the next character should be
|
||
* used for the mnemonic accelerator key.
|
||
*/
|
||
void
|
||
gtk_label_set_use_underline (GtkLabel *self,
|
||
gboolean setting)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
g_object_freeze_notify (G_OBJECT (self));
|
||
|
||
if (gtk_label_set_use_underline_internal (self, !!setting))
|
||
gtk_label_recalculate (self);
|
||
|
||
g_object_thaw_notify (G_OBJECT (self));
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_use_underline:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns whether an embedded underline in the label indicates a
|
||
* mnemonic. See gtk_label_set_use_underline().
|
||
*
|
||
* Returns: %TRUE whether an embedded underline in the label indicates
|
||
* the mnemonic accelerator keys.
|
||
**/
|
||
gboolean
|
||
gtk_label_get_use_underline (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
return self->use_underline;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_single_line_mode:
|
||
* @self: a #GtkLabel
|
||
* @single_line_mode: %TRUE if the label should be in single line mode
|
||
*
|
||
* Sets whether the label is in single line mode.
|
||
*/
|
||
void
|
||
gtk_label_set_single_line_mode (GtkLabel *self,
|
||
gboolean single_line_mode)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
single_line_mode = single_line_mode != FALSE;
|
||
|
||
if (self->single_line_mode != single_line_mode)
|
||
{
|
||
self->single_line_mode = single_line_mode;
|
||
|
||
gtk_label_clear_layout (self);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_SINGLE_LINE_MODE]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_single_line_mode:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns whether the label is in single line mode.
|
||
*
|
||
* Returns: %TRUE when the label is in single line mode.
|
||
**/
|
||
gboolean
|
||
gtk_label_get_single_line_mode (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), FALSE);
|
||
|
||
return self->single_line_mode;
|
||
}
|
||
|
||
/* Compute the X position for an offset that corresponds to the "more important
|
||
* cursor position for that offset. We use this when trying to guess to which
|
||
* end of the selection we should go to when the user hits the left or
|
||
* right arrow key.
|
||
*/
|
||
static void
|
||
get_better_cursor (GtkLabel *self,
|
||
int index,
|
||
int *x,
|
||
int *y)
|
||
{
|
||
GdkSeat *seat;
|
||
GdkDevice *keyboard;
|
||
PangoDirection keymap_direction;
|
||
PangoDirection cursor_direction;
|
||
gboolean split_cursor;
|
||
PangoRectangle strong_pos, weak_pos;
|
||
|
||
seat = gdk_display_get_default_seat (gtk_widget_get_display (GTK_WIDGET (self)));
|
||
if (seat)
|
||
keyboard = gdk_seat_get_keyboard (seat);
|
||
else
|
||
keyboard = NULL;
|
||
if (keyboard)
|
||
keymap_direction = gdk_device_get_direction (keyboard);
|
||
else
|
||
keymap_direction = PANGO_DIRECTION_LTR;
|
||
|
||
cursor_direction = get_cursor_direction (self);
|
||
|
||
g_object_get (gtk_widget_get_settings (GTK_WIDGET (self)),
|
||
"gtk-split-cursor", &split_cursor,
|
||
NULL);
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
pango_layout_get_cursor_pos (self->layout, index,
|
||
&strong_pos, &weak_pos);
|
||
|
||
if (split_cursor)
|
||
{
|
||
*x = strong_pos.x / PANGO_SCALE;
|
||
*y = strong_pos.y / PANGO_SCALE;
|
||
}
|
||
else
|
||
{
|
||
if (keymap_direction == cursor_direction)
|
||
{
|
||
*x = strong_pos.x / PANGO_SCALE;
|
||
*y = strong_pos.y / PANGO_SCALE;
|
||
}
|
||
else
|
||
{
|
||
*x = weak_pos.x / PANGO_SCALE;
|
||
*y = weak_pos.y / PANGO_SCALE;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
static int
|
||
gtk_label_move_logically (GtkLabel *self,
|
||
int start,
|
||
int count)
|
||
{
|
||
int offset = g_utf8_pointer_to_offset (self->text,
|
||
self->text + start);
|
||
|
||
if (self->text)
|
||
{
|
||
const PangoLogAttr *log_attrs;
|
||
int n_attrs;
|
||
int length;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
length = g_utf8_strlen (self->text, -1);
|
||
|
||
log_attrs = pango_layout_get_log_attrs_readonly (self->layout, &n_attrs);
|
||
|
||
while (count > 0 && offset < length)
|
||
{
|
||
do
|
||
offset++;
|
||
while (offset < length && !log_attrs[offset].is_cursor_position);
|
||
|
||
count--;
|
||
}
|
||
while (count < 0 && offset > 0)
|
||
{
|
||
do
|
||
offset--;
|
||
while (offset > 0 && !log_attrs[offset].is_cursor_position);
|
||
|
||
count++;
|
||
}
|
||
}
|
||
|
||
return g_utf8_offset_to_pointer (self->text, offset) - self->text;
|
||
}
|
||
|
||
static int
|
||
gtk_label_move_visually (GtkLabel *self,
|
||
int start,
|
||
int count)
|
||
{
|
||
int index;
|
||
|
||
index = start;
|
||
|
||
while (count != 0)
|
||
{
|
||
int new_index, new_trailing;
|
||
gboolean split_cursor;
|
||
gboolean strong;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
g_object_get (gtk_widget_get_settings (GTK_WIDGET (self)),
|
||
"gtk-split-cursor", &split_cursor,
|
||
NULL);
|
||
|
||
if (split_cursor)
|
||
strong = TRUE;
|
||
else
|
||
{
|
||
GdkSeat *seat;
|
||
GdkDevice *keyboard;
|
||
PangoDirection keymap_direction;
|
||
|
||
seat = gdk_display_get_default_seat (gtk_widget_get_display (GTK_WIDGET (self)));
|
||
if (seat)
|
||
keyboard = gdk_seat_get_keyboard (seat);
|
||
else
|
||
keyboard = NULL;
|
||
if (keyboard)
|
||
keymap_direction = gdk_device_get_direction (keyboard);
|
||
else
|
||
keymap_direction = PANGO_DIRECTION_LTR;
|
||
|
||
strong = keymap_direction == get_cursor_direction (self);
|
||
}
|
||
|
||
if (count > 0)
|
||
{
|
||
pango_layout_move_cursor_visually (self->layout, strong, index, 0, 1, &new_index, &new_trailing);
|
||
count--;
|
||
}
|
||
else
|
||
{
|
||
pango_layout_move_cursor_visually (self->layout, strong, index, 0, -1, &new_index, &new_trailing);
|
||
count++;
|
||
}
|
||
|
||
if (new_index < 0 || new_index == G_MAXINT)
|
||
break;
|
||
|
||
index = new_index;
|
||
|
||
while (new_trailing--)
|
||
index = g_utf8_next_char (self->text + new_index) - self->text;
|
||
}
|
||
|
||
return index;
|
||
}
|
||
|
||
static int
|
||
gtk_label_move_forward_word (GtkLabel *self,
|
||
int start)
|
||
{
|
||
int new_pos = g_utf8_pointer_to_offset (self->text,
|
||
self->text + start);
|
||
int length;
|
||
|
||
length = g_utf8_strlen (self->text, -1);
|
||
if (new_pos < length)
|
||
{
|
||
const PangoLogAttr *log_attrs;
|
||
int n_attrs;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
log_attrs = pango_layout_get_log_attrs_readonly (self->layout, &n_attrs);
|
||
|
||
/* Find the next word end */
|
||
new_pos++;
|
||
while (new_pos < n_attrs && !log_attrs[new_pos].is_word_end)
|
||
new_pos++;
|
||
}
|
||
|
||
return g_utf8_offset_to_pointer (self->text, new_pos) - self->text;
|
||
}
|
||
|
||
|
||
static int
|
||
gtk_label_move_backward_word (GtkLabel *self,
|
||
int start)
|
||
{
|
||
int new_pos = g_utf8_pointer_to_offset (self->text,
|
||
self->text + start);
|
||
|
||
if (new_pos > 0)
|
||
{
|
||
const PangoLogAttr *log_attrs;
|
||
int n_attrs;
|
||
|
||
gtk_label_ensure_layout (self);
|
||
|
||
log_attrs = pango_layout_get_log_attrs_readonly (self->layout, &n_attrs);
|
||
|
||
new_pos -= 1;
|
||
|
||
/* Find the previous word beginning */
|
||
while (new_pos > 0 && !log_attrs[new_pos].is_word_start)
|
||
new_pos--;
|
||
}
|
||
|
||
return g_utf8_offset_to_pointer (self->text, new_pos) - self->text;
|
||
}
|
||
|
||
static void
|
||
gtk_label_move_cursor (GtkLabel *self,
|
||
GtkMovementStep step,
|
||
int count,
|
||
gboolean extend_selection)
|
||
{
|
||
int old_pos;
|
||
int new_pos;
|
||
|
||
if (self->select_info == NULL)
|
||
return;
|
||
|
||
old_pos = new_pos = self->select_info->selection_end;
|
||
|
||
if (self->select_info->selection_end != self->select_info->selection_anchor &&
|
||
!extend_selection)
|
||
{
|
||
/* If we have a current selection and aren't extending it, move to the
|
||
* start/or end of the selection as appropriate
|
||
*/
|
||
switch (step)
|
||
{
|
||
case GTK_MOVEMENT_VISUAL_POSITIONS:
|
||
{
|
||
int end_x, end_y;
|
||
int anchor_x, anchor_y;
|
||
gboolean end_is_left;
|
||
|
||
get_better_cursor (self, self->select_info->selection_end, &end_x, &end_y);
|
||
get_better_cursor (self, self->select_info->selection_anchor, &anchor_x, &anchor_y);
|
||
|
||
end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x);
|
||
|
||
if (count < 0)
|
||
new_pos = end_is_left ? self->select_info->selection_end : self->select_info->selection_anchor;
|
||
else
|
||
new_pos = !end_is_left ? self->select_info->selection_end : self->select_info->selection_anchor;
|
||
break;
|
||
}
|
||
case GTK_MOVEMENT_LOGICAL_POSITIONS:
|
||
case GTK_MOVEMENT_WORDS:
|
||
if (count < 0)
|
||
new_pos = MIN (self->select_info->selection_end, self->select_info->selection_anchor);
|
||
else
|
||
new_pos = MAX (self->select_info->selection_end, self->select_info->selection_anchor);
|
||
break;
|
||
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
|
||
case GTK_MOVEMENT_PARAGRAPH_ENDS:
|
||
case GTK_MOVEMENT_BUFFER_ENDS:
|
||
/* FIXME: Can do better here */
|
||
new_pos = count < 0 ? 0 : strlen (self->text);
|
||
break;
|
||
case GTK_MOVEMENT_DISPLAY_LINES:
|
||
case GTK_MOVEMENT_PARAGRAPHS:
|
||
case GTK_MOVEMENT_PAGES:
|
||
case GTK_MOVEMENT_HORIZONTAL_PAGES:
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
switch (step)
|
||
{
|
||
case GTK_MOVEMENT_LOGICAL_POSITIONS:
|
||
new_pos = gtk_label_move_logically (self, new_pos, count);
|
||
break;
|
||
case GTK_MOVEMENT_VISUAL_POSITIONS:
|
||
new_pos = gtk_label_move_visually (self, new_pos, count);
|
||
if (new_pos == old_pos)
|
||
{
|
||
if (!extend_selection)
|
||
{
|
||
if (!gtk_widget_keynav_failed (GTK_WIDGET (self),
|
||
count > 0 ?
|
||
GTK_DIR_RIGHT : GTK_DIR_LEFT))
|
||
{
|
||
GtkRoot *root = gtk_widget_get_root (GTK_WIDGET (self));
|
||
|
||
if (root)
|
||
gtk_widget_child_focus (GTK_WIDGET (root), count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
gtk_widget_error_bell (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
break;
|
||
case GTK_MOVEMENT_WORDS:
|
||
while (count > 0)
|
||
{
|
||
new_pos = gtk_label_move_forward_word (self, new_pos);
|
||
count--;
|
||
}
|
||
while (count < 0)
|
||
{
|
||
new_pos = gtk_label_move_backward_word (self, new_pos);
|
||
count++;
|
||
}
|
||
if (new_pos == old_pos)
|
||
gtk_widget_error_bell (GTK_WIDGET (self));
|
||
break;
|
||
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
|
||
case GTK_MOVEMENT_PARAGRAPH_ENDS:
|
||
case GTK_MOVEMENT_BUFFER_ENDS:
|
||
/* FIXME: Can do better here */
|
||
new_pos = count < 0 ? 0 : strlen (self->text);
|
||
if (new_pos == old_pos)
|
||
gtk_widget_error_bell (GTK_WIDGET (self));
|
||
break;
|
||
case GTK_MOVEMENT_DISPLAY_LINES:
|
||
case GTK_MOVEMENT_PARAGRAPHS:
|
||
case GTK_MOVEMENT_PAGES:
|
||
case GTK_MOVEMENT_HORIZONTAL_PAGES:
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (extend_selection)
|
||
gtk_label_select_region_index (self,
|
||
self->select_info->selection_anchor,
|
||
new_pos);
|
||
else
|
||
gtk_label_select_region_index (self, new_pos, new_pos);
|
||
}
|
||
|
||
static void
|
||
gtk_label_copy_clipboard (GtkLabel *self)
|
||
{
|
||
if (self->text && self->select_info)
|
||
{
|
||
int start, end;
|
||
int len;
|
||
GdkClipboard *clipboard;
|
||
|
||
start = MIN (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
end = MAX (self->select_info->selection_anchor,
|
||
self->select_info->selection_end);
|
||
|
||
len = strlen (self->text);
|
||
|
||
if (end > len)
|
||
end = len;
|
||
|
||
if (start > len)
|
||
start = len;
|
||
|
||
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (self));
|
||
|
||
if (start != end)
|
||
{
|
||
char *str = g_strndup (self->text + start, end - start);
|
||
gdk_clipboard_set_text (clipboard, str);
|
||
g_free (str);
|
||
}
|
||
else
|
||
{
|
||
GtkLabelLink *link;
|
||
|
||
link = gtk_label_get_focus_link (self, NULL);
|
||
if (link)
|
||
gdk_clipboard_set_text (clipboard, link->uri);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_select_all (GtkLabel *self)
|
||
{
|
||
gtk_label_select_region_index (self, 0, strlen (self->text));
|
||
}
|
||
|
||
static void
|
||
gtk_label_activate_link_open (GtkWidget *widget,
|
||
const char *name,
|
||
GVariant *parameter)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkLabelLink *link = self->select_info->context_link;
|
||
|
||
if (link)
|
||
emit_activate_link (self, link);
|
||
}
|
||
|
||
static void
|
||
gtk_label_activate_link_copy (GtkWidget *widget,
|
||
const char *name,
|
||
GVariant *parameter)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkLabelLink *link = self->select_info->context_link;
|
||
|
||
if (link)
|
||
{
|
||
GdkClipboard *clipboard;
|
||
|
||
clipboard = gtk_widget_get_clipboard (widget);
|
||
gdk_clipboard_set_text (clipboard, link->uri);
|
||
}
|
||
else
|
||
g_print ("no link ?!\n");
|
||
}
|
||
|
||
static void
|
||
gtk_label_activate_clipboard_copy (GtkWidget *widget,
|
||
const char *name,
|
||
GVariant *parameter)
|
||
{
|
||
g_signal_emit_by_name (widget, "copy-clipboard");
|
||
}
|
||
|
||
static void
|
||
gtk_label_activate_selection_select_all (GtkWidget *widget,
|
||
const char *name,
|
||
GVariant *parameter)
|
||
{
|
||
gtk_label_select_all (GTK_LABEL (widget));
|
||
}
|
||
|
||
static void
|
||
gtk_label_nop (GtkWidget *widget,
|
||
const char *name,
|
||
GVariant *parameter)
|
||
{
|
||
}
|
||
|
||
static void
|
||
gtk_label_update_actions (GtkLabel *self)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
gboolean has_selection;
|
||
GtkLabelLink *link;
|
||
|
||
if (self->select_info)
|
||
{
|
||
has_selection = self->select_info->selection_anchor != self->select_info->selection_end;
|
||
link = self->select_info->active_link;
|
||
}
|
||
else
|
||
{
|
||
has_selection = FALSE;
|
||
link = gtk_label_get_focus_link (self, NULL);
|
||
}
|
||
|
||
gtk_widget_action_set_enabled (widget, "clipboard.cut", FALSE);
|
||
gtk_widget_action_set_enabled (widget, "clipboard.copy", has_selection);
|
||
gtk_widget_action_set_enabled (widget, "clipboard.paste", FALSE);
|
||
gtk_widget_action_set_enabled (widget, "selection.select-all",
|
||
gtk_label_get_selectable (self));
|
||
gtk_widget_action_set_enabled (widget, "selection.delete", FALSE);
|
||
gtk_widget_action_set_enabled (widget, "link.open", !has_selection && link);
|
||
gtk_widget_action_set_enabled (widget, "link.copy", !has_selection && link);
|
||
}
|
||
|
||
static GMenuModel *
|
||
gtk_label_get_menu_model (GtkLabel *self)
|
||
{
|
||
GMenu *menu, *section;
|
||
GMenuItem *item;
|
||
|
||
menu = g_menu_new ();
|
||
|
||
section = g_menu_new ();
|
||
g_menu_append (section, _("Cu_t"), "clipboard.cut");
|
||
g_menu_append (section, _("_Copy"), "clipboard.copy");
|
||
g_menu_append (section, _("_Paste"), "clipboard.paste");
|
||
g_menu_append (section, _("_Delete"), "selection.delete");
|
||
g_menu_append_section (menu, NULL, G_MENU_MODEL (section));
|
||
g_object_unref (section);
|
||
|
||
section = g_menu_new ();
|
||
g_menu_append (section, _("Select _All"), "selection.select-all");
|
||
g_menu_append_section (menu, NULL, G_MENU_MODEL (section));
|
||
g_object_unref (section);
|
||
|
||
section = g_menu_new ();
|
||
item = g_menu_item_new (_("_Open Link"), "link.open");
|
||
g_menu_item_set_attribute (item, "hidden-when", "s", "action-disabled");
|
||
g_menu_append_item (section, item);
|
||
g_object_unref (item);
|
||
item = g_menu_item_new (_("Copy _Link Address"), "link.copy");
|
||
g_menu_item_set_attribute (item, "hidden-when", "s", "action-disabled");
|
||
g_menu_append_item (section, item);
|
||
g_object_unref (item);
|
||
g_menu_append_section (menu, NULL, G_MENU_MODEL (section));
|
||
g_object_unref (section);
|
||
|
||
if (self->extra_menu)
|
||
g_menu_append_section (menu, NULL, self->extra_menu);
|
||
|
||
return G_MENU_MODEL (menu);
|
||
}
|
||
|
||
static void
|
||
gtk_label_do_popup (GtkLabel *self,
|
||
double x,
|
||
double y)
|
||
{
|
||
if (!self->select_info)
|
||
return;
|
||
|
||
if (self->select_info->link_clicked)
|
||
self->select_info->context_link = self->select_info->active_link;
|
||
else
|
||
self->select_info->context_link = gtk_label_get_focus_link (self, NULL);
|
||
|
||
gtk_label_update_actions (self);
|
||
|
||
if (!self->popup_menu)
|
||
{
|
||
GMenuModel *model;
|
||
|
||
model = gtk_label_get_menu_model (self);
|
||
self->popup_menu = gtk_popover_menu_new_from_model (model);
|
||
gtk_widget_set_parent (self->popup_menu, GTK_WIDGET (self));
|
||
gtk_popover_set_position (GTK_POPOVER (self->popup_menu), GTK_POS_BOTTOM);
|
||
|
||
gtk_popover_set_has_arrow (GTK_POPOVER (self->popup_menu), FALSE);
|
||
gtk_widget_set_halign (self->popup_menu, GTK_ALIGN_START);
|
||
|
||
g_object_unref (model);
|
||
}
|
||
|
||
if (x != -1 && y != -1)
|
||
{
|
||
GdkRectangle rect = { x, y, 1, 1 };
|
||
gtk_popover_set_pointing_to (GTK_POPOVER (self->popup_menu), &rect);
|
||
}
|
||
else
|
||
gtk_popover_set_pointing_to (GTK_POPOVER (self->popup_menu), NULL);
|
||
|
||
gtk_popover_popup (GTK_POPOVER (self->popup_menu));
|
||
}
|
||
|
||
static void
|
||
gtk_label_popup_menu (GtkWidget *widget,
|
||
const char *action_name,
|
||
GVariant *parameters)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
|
||
gtk_label_do_popup (self, -1, -1);
|
||
}
|
||
|
||
static void
|
||
gtk_label_clear_links (GtkLabel *self)
|
||
{
|
||
guint i;
|
||
|
||
if (!self->select_info)
|
||
return;
|
||
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
link_free (&self->select_info->links[i]);
|
||
g_free (self->select_info->links);
|
||
self->select_info->links = NULL;
|
||
self->select_info->n_links = 0;
|
||
self->select_info->active_link = NULL;
|
||
gtk_widget_remove_css_class (GTK_WIDGET (self), "link");
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_activate_link (GtkLabel *self,
|
||
const char *uri)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
GtkWidget *toplevel = GTK_WIDGET (gtk_widget_get_root (widget));
|
||
|
||
if (!GTK_IS_WINDOW (toplevel))
|
||
return FALSE;
|
||
|
||
gtk_show_uri (GTK_WINDOW (toplevel), uri, GDK_CURRENT_TIME);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
emit_activate_link (GtkLabel *self,
|
||
GtkLabelLink *link)
|
||
{
|
||
gboolean handled;
|
||
|
||
g_signal_emit (self, signals[ACTIVATE_LINK], 0, link->uri, &handled);
|
||
|
||
/* signal handler might have invalidated the layout */
|
||
if (!self->layout)
|
||
return;
|
||
|
||
if (handled && !link->visited &&
|
||
self->select_info && self->select_info->links)
|
||
{
|
||
link->visited = TRUE;
|
||
update_link_state (self);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_label_activate_current_link (GtkLabel *self)
|
||
{
|
||
GtkLabelLink *link;
|
||
GtkWidget *widget = GTK_WIDGET (self);
|
||
|
||
link = gtk_label_get_focus_link (self, NULL);
|
||
|
||
if (link)
|
||
emit_activate_link (self, link);
|
||
else
|
||
gtk_widget_activate_default (widget);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_current_uri:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Returns the URI for the currently active link in the label.
|
||
* The active link is the one under the mouse pointer or, in a
|
||
* selectable label, the link in which the text cursor is currently
|
||
* positioned.
|
||
*
|
||
* This function is intended for use in a #GtkLabel::activate-link handler
|
||
* or for use in a #GtkWidget::query-tooltip handler.
|
||
*
|
||
* Returns: (nullable): the currently active URI or %NULL if there is none.
|
||
* The string is owned by GTK and must not be freed or modified.
|
||
*/
|
||
const char *
|
||
gtk_label_get_current_uri (GtkLabel *self)
|
||
{
|
||
const GtkLabelLink *link;
|
||
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
if (!self->select_info)
|
||
return NULL;
|
||
|
||
if (self->select_info->link_clicked)
|
||
link = self->select_info->active_link;
|
||
else
|
||
link = gtk_label_get_focus_link (self, NULL);
|
||
|
||
if (link)
|
||
return link->uri;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_label_query_tooltip (GtkWidget *widget,
|
||
int x,
|
||
int y,
|
||
gboolean keyboard_tip,
|
||
GtkTooltip *tooltip)
|
||
{
|
||
GtkLabel *self = GTK_LABEL (widget);
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
int index = -1;
|
||
|
||
if (info && info->links)
|
||
{
|
||
if (keyboard_tip)
|
||
{
|
||
if (info->selection_anchor == info->selection_end)
|
||
index = info->selection_anchor;
|
||
}
|
||
else
|
||
{
|
||
if (!get_layout_index (self, x, y, &index))
|
||
index = -1;
|
||
}
|
||
|
||
if (index != -1)
|
||
{
|
||
const int link_index = _gtk_label_get_link_at (self, index);
|
||
|
||
if (link_index != -1)
|
||
{
|
||
const GtkLabelLink *link = &info->links[link_index];
|
||
|
||
if (link->title)
|
||
{
|
||
gtk_tooltip_set_markup (tooltip, link->title);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return GTK_WIDGET_CLASS (gtk_label_parent_class)->query_tooltip (widget,
|
||
x, y,
|
||
keyboard_tip,
|
||
tooltip);
|
||
}
|
||
|
||
int
|
||
_gtk_label_get_cursor_position (GtkLabel *self)
|
||
{
|
||
if (self->select_info && self->select_info->selectable)
|
||
return g_utf8_pointer_to_offset (self->text,
|
||
self->text + self->select_info->selection_end);
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
_gtk_label_get_selection_bound (GtkLabel *self)
|
||
{
|
||
if (self->select_info && self->select_info->selectable)
|
||
return g_utf8_pointer_to_offset (self->text,
|
||
self->text + self->select_info->selection_anchor);
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_lines:
|
||
* @self: a #GtkLabel
|
||
* @lines: the desired number of lines, or -1
|
||
*
|
||
* Sets the number of lines to which an ellipsized, wrapping label
|
||
* should be limited. This has no effect if the label is not wrapping
|
||
* or ellipsized. Set this to -1 if you don’t want to limit the
|
||
* number of lines.
|
||
*/
|
||
void
|
||
gtk_label_set_lines (GtkLabel *self,
|
||
int lines)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (self->lines != lines)
|
||
{
|
||
self->lines = lines;
|
||
gtk_label_clear_layout (self);
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_LINES]);
|
||
gtk_widget_queue_resize (GTK_WIDGET (self));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_lines:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the number of lines to which an ellipsized, wrapping
|
||
* label should be limited. See gtk_label_set_lines().
|
||
*
|
||
* Returns: The number of lines
|
||
*/
|
||
int
|
||
gtk_label_get_lines (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), -1);
|
||
|
||
return self->lines;
|
||
}
|
||
|
||
int
|
||
_gtk_label_get_n_links (GtkLabel *self)
|
||
{
|
||
if (self->select_info)
|
||
return self->select_info->n_links;
|
||
|
||
return 0;
|
||
}
|
||
|
||
const char *
|
||
_gtk_label_get_link_uri (GtkLabel *self,
|
||
int idx)
|
||
{
|
||
if (self->select_info)
|
||
return self->select_info->links[idx].uri;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
void
|
||
_gtk_label_get_link_extent (GtkLabel *self,
|
||
int idx,
|
||
int *start,
|
||
int *end)
|
||
{
|
||
if (self->select_info)
|
||
{
|
||
const GtkLabelLink *link = &self->select_info->links[idx];
|
||
|
||
*start = link->start;
|
||
*end = link->end;
|
||
}
|
||
else
|
||
{
|
||
*start = -1;
|
||
*end = -1;
|
||
}
|
||
}
|
||
|
||
int
|
||
_gtk_label_get_link_at (GtkLabel *self,
|
||
int pos)
|
||
{
|
||
if (self->select_info)
|
||
{
|
||
guint i;
|
||
|
||
for (i = 0; i < self->select_info->n_links; i++)
|
||
{
|
||
const GtkLabelLink *link = &self->select_info->links[i];
|
||
|
||
if (link->start <= pos && pos < link->end)
|
||
return i;
|
||
}
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
void
|
||
_gtk_label_activate_link (GtkLabel *self,
|
||
int idx)
|
||
{
|
||
if (self->select_info)
|
||
{
|
||
GtkLabelLink *link = &self->select_info->links[idx];
|
||
|
||
emit_activate_link (self, link);
|
||
}
|
||
}
|
||
|
||
gboolean
|
||
_gtk_label_get_link_visited (GtkLabel *self,
|
||
int idx)
|
||
{
|
||
if (self->select_info)
|
||
return self->select_info->links[idx].visited;
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
gboolean
|
||
_gtk_label_get_link_focused (GtkLabel *self,
|
||
int idx)
|
||
{
|
||
GtkLabelSelectionInfo *info = self->select_info;
|
||
|
||
if (!info)
|
||
return FALSE;
|
||
|
||
if (info->selection_anchor != info->selection_end)
|
||
return FALSE;
|
||
|
||
if (idx >= 0 && idx < info->n_links)
|
||
{
|
||
const GtkLabelLink *link = &info->links[idx];
|
||
|
||
if (link->start <= info->selection_anchor &&
|
||
info->selection_anchor <= link->end)
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_xalign:
|
||
* @self: a #GtkLabel
|
||
* @xalign: the new xalign value, between 0 and 1
|
||
*
|
||
* Sets the #GtkLabel:xalign property for @label.
|
||
*/
|
||
void
|
||
gtk_label_set_xalign (GtkLabel *self,
|
||
float xalign)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
xalign = CLAMP (xalign, 0.0, 1.0);
|
||
|
||
if (self->xalign == xalign)
|
||
return;
|
||
|
||
self->xalign = xalign;
|
||
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_XALIGN]);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_xalign:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the #GtkLabel:xalign property for @label.
|
||
*
|
||
* Returns: the xalign property
|
||
*/
|
||
float
|
||
gtk_label_get_xalign (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), 0.5);
|
||
|
||
return self->xalign;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_yalign:
|
||
* @self: a #GtkLabel
|
||
* @yalign: the new yalign value, between 0 and 1
|
||
*
|
||
* Sets the #GtkLabel:yalign property for @label.
|
||
*/
|
||
void
|
||
gtk_label_set_yalign (GtkLabel *self,
|
||
float yalign)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
yalign = CLAMP (yalign, 0.0, 1.0);
|
||
|
||
if (self->yalign == yalign)
|
||
return;
|
||
|
||
self->yalign = yalign;
|
||
|
||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_YALIGN]);
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_yalign:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the #GtkLabel:yalign property for @label.
|
||
*
|
||
* Returns: the yalign property
|
||
*/
|
||
float
|
||
gtk_label_get_yalign (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), 0.5);
|
||
|
||
return self->yalign;
|
||
}
|
||
|
||
/**
|
||
* gtk_label_set_extra_menu:
|
||
* @self: a #GtkLabel
|
||
* @model: (allow-none): a #GMenuModel
|
||
*
|
||
* Sets a menu model to add when constructing
|
||
* the context menu for @label.
|
||
*/
|
||
void
|
||
gtk_label_set_extra_menu (GtkLabel *self,
|
||
GMenuModel *model)
|
||
{
|
||
g_return_if_fail (GTK_IS_LABEL (self));
|
||
|
||
if (g_set_object (&self->extra_menu, model))
|
||
{
|
||
g_clear_pointer (&self->popup_menu, gtk_widget_unparent);
|
||
g_object_notify_by_pspec (G_OBJECT (self), label_props[PROP_EXTRA_MENU]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_label_get_extra_menu:
|
||
* @self: a #GtkLabel
|
||
*
|
||
* Gets the menu model set with gtk_label_set_extra_menu().
|
||
*
|
||
* Returns: (transfer none) (nullable): the menu model
|
||
*/
|
||
GMenuModel *
|
||
gtk_label_get_extra_menu (GtkLabel *self)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_LABEL (self), NULL);
|
||
|
||
return self->extra_menu;
|
||
}
|