mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-09-20 05:50:11 +00:00
ade171a2ed
The values have been 0/0 for a long time now, so just drop the GtkAllocation argument and replace it with width and height.
697 lines
21 KiB
C
697 lines
21 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/>.
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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 <string.h>
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#include "gtkframe.h"
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#include "gtklabel.h"
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#include "gtkprivate.h"
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#include "gtktypebuiltins.h"
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#include "gtkintl.h"
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#include "gtkbuildable.h"
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#include "gtkwidgetpath.h"
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#include "gtkcssnodeprivate.h"
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#include "gtkwidgetprivate.h"
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#include "gtkcontainerprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include "gtklabel.h"
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#include "a11y/gtkframeaccessible.h"
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/**
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* SECTION:gtkframe
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* @Short_description: A bin with a decorative frame and optional label
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* @Title: GtkFrame
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*
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* The frame widget is a bin that surrounds its child with a decorative
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* frame and an optional label. If present, the label is drawn inside
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* the top edge of the frame. The horizontal position of the label can
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* be controlled with gtk_frame_set_label_align().
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*
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* # GtkFrame as GtkBuildable
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*
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* The GtkFrame implementation of the GtkBuildable interface supports
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* placing a child in the label position by specifying “label” as the
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* “type” attribute of a <child> element. A normal content child can
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* be specified without specifying a <child> type attribute.
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*
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* An example of a UI definition fragment with GtkFrame:
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* |[
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* <object class="GtkFrame">
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* <child type="label">
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* <object class="GtkLabel" id="frame_label"/>
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* </child>
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* <child>
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* <object class="GtkEntry" id="frame_content"/>
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* </child>
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* </object>
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* ]|
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*
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* # CSS nodes
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*
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* |[<!-- language="plain" -->
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* frame[.flat]
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* ├── <label widget>
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* ╰── <child>
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* ]|
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*
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* GtkFrame has a main CSS node with name “frame”, which is used to draw the
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* visible border. You can set the appearance of the border using CSS properties
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* like “border-style” on this node.
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*
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* The node can be given the style class “.flat”, which is used by themes to
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* disable drawing of the border. To do this from code, call
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* gtk_frame_set_shadow_type() with %GTK_SHADOW_NONE to add the “.flat” class or
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* any other shadow type to remove it.
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*/
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typedef struct
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{
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/* Properties */
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GtkWidget *label_widget;
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gint16 shadow_type;
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gfloat label_xalign;
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} GtkFramePrivate;
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enum {
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PROP_0,
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PROP_LABEL,
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PROP_LABEL_XALIGN,
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PROP_SHADOW_TYPE,
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PROP_LABEL_WIDGET,
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LAST_PROP
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};
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static GParamSpec *frame_props[LAST_PROP];
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static void gtk_frame_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_frame_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_frame_size_allocate (GtkWidget *widget,
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int width,
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int height,
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int baseline);
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static void gtk_frame_remove (GtkContainer *container,
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GtkWidget *child);
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static void gtk_frame_forall (GtkContainer *container,
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GtkCallback callback,
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gpointer callback_data);
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static void gtk_frame_compute_child_allocation (GtkFrame *frame,
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GtkAllocation *child_allocation);
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static void gtk_frame_real_compute_child_allocation (GtkFrame *frame,
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GtkAllocation *child_allocation);
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/* GtkBuildable */
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static void gtk_frame_buildable_init (GtkBuildableIface *iface);
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static void gtk_frame_buildable_add_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *type);
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static void gtk_frame_measure (GtkWidget *widget,
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GtkOrientation orientation,
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gint for_size,
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gint *minimum_size,
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gint *natural_size,
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gint *minimum_baseline,
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gint *natural_baseline);
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G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
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G_ADD_PRIVATE (GtkFrame)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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gtk_frame_buildable_init))
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static void
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gtk_frame_class_init (GtkFrameClass *class)
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{
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GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
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GtkContainerClass *container_class;
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gobject_class = (GObjectClass*) class;
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widget_class = GTK_WIDGET_CLASS (class);
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container_class = GTK_CONTAINER_CLASS (class);
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gobject_class->set_property = gtk_frame_set_property;
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gobject_class->get_property = gtk_frame_get_property;
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frame_props[PROP_LABEL] =
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g_param_spec_string ("label",
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P_("Label"),
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P_("Text of the frame’s label"),
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NULL,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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frame_props[PROP_LABEL_XALIGN] =
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g_param_spec_float ("label-xalign",
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P_("Label xalign"),
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P_("The horizontal alignment of the label"),
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0.0, 1.0,
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0.0,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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frame_props[PROP_SHADOW_TYPE] =
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g_param_spec_enum ("shadow-type",
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P_("Frame shadow"),
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P_("Appearance of the frame"),
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GTK_TYPE_SHADOW_TYPE,
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GTK_SHADOW_ETCHED_IN,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
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frame_props[PROP_LABEL_WIDGET] =
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g_param_spec_object ("label-widget",
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P_("Label widget"),
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P_("A widget to display in place of the usual frame label"),
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GTK_TYPE_WIDGET,
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GTK_PARAM_READWRITE);
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g_object_class_install_properties (gobject_class, LAST_PROP, frame_props);
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widget_class->size_allocate = gtk_frame_size_allocate;
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widget_class->measure = gtk_frame_measure;
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container_class->remove = gtk_frame_remove;
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container_class->forall = gtk_frame_forall;
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class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
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gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_FRAME_ACCESSIBLE);
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gtk_widget_class_set_css_name (widget_class, I_("frame"));
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}
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static GtkBuildableIface *parent_buildable_iface;
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static void
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gtk_frame_buildable_init (GtkBuildableIface *iface)
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{
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parent_buildable_iface = g_type_interface_peek_parent (iface);
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iface->add_child = gtk_frame_buildable_add_child;
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}
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static void
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gtk_frame_buildable_add_child (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *type)
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{
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if (type && strcmp (type, "label") == 0)
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gtk_frame_set_label_widget (GTK_FRAME (buildable), GTK_WIDGET (child));
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else
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parent_buildable_iface->add_child (buildable, builder, child, type);
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}
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static void
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gtk_frame_init (GtkFrame *frame)
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{
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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priv->label_widget = NULL;
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priv->shadow_type = GTK_SHADOW_ETCHED_IN;
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priv->label_xalign = 0.0;
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}
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static void
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gtk_frame_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkFrame *frame = GTK_FRAME (object);
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switch (prop_id)
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{
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case PROP_LABEL:
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gtk_frame_set_label (frame, g_value_get_string (value));
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break;
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case PROP_LABEL_XALIGN:
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gtk_frame_set_label_align (frame, g_value_get_float (value));
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break;
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case PROP_SHADOW_TYPE:
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gtk_frame_set_shadow_type (frame, g_value_get_enum (value));
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break;
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case PROP_LABEL_WIDGET:
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gtk_frame_set_label_widget (frame, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_frame_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkFrame *frame = GTK_FRAME (object);
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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switch (prop_id)
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{
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case PROP_LABEL:
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g_value_set_string (value, gtk_frame_get_label (frame));
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break;
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case PROP_LABEL_XALIGN:
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g_value_set_float (value, priv->label_xalign);
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break;
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case PROP_SHADOW_TYPE:
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g_value_set_enum (value, priv->shadow_type);
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break;
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case PROP_LABEL_WIDGET:
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g_value_set_object (value,
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priv->label_widget ?
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G_OBJECT (priv->label_widget) : NULL);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/**
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* gtk_frame_new:
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* @label: (allow-none): the text to use as the label of the frame
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*
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* Creates a new #GtkFrame, with optional label @label.
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* If @label is %NULL, the label is omitted.
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*
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* Returns: a new #GtkFrame widget
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**/
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GtkWidget*
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gtk_frame_new (const gchar *label)
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{
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return g_object_new (GTK_TYPE_FRAME, "label", label, NULL);
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}
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static void
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gtk_frame_remove (GtkContainer *container,
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GtkWidget *child)
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{
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GtkFrame *frame = GTK_FRAME (container);
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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if (priv->label_widget == child)
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gtk_frame_set_label_widget (frame, NULL);
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else
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GTK_CONTAINER_CLASS (gtk_frame_parent_class)->remove (container, child);
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}
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static void
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gtk_frame_forall (GtkContainer *container,
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GtkCallback callback,
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gpointer callback_data)
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{
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GtkBin *bin = GTK_BIN (container);
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GtkFrame *frame = GTK_FRAME (container);
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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GtkWidget *child;
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child = gtk_bin_get_child (bin);
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if (child)
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(* callback) (child, callback_data);
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if (priv->label_widget)
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(* callback) (priv->label_widget, callback_data);
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}
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/**
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* gtk_frame_set_label:
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* @frame: a #GtkFrame
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* @label: (allow-none): the text to use as the label of the frame
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*
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* Removes the current #GtkFrame:label-widget. If @label is not %NULL, creates a
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* new #GtkLabel with that text and adds it as the #GtkFrame:label-widget.
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**/
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void
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gtk_frame_set_label (GtkFrame *frame,
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const gchar *label)
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{
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g_return_if_fail (GTK_IS_FRAME (frame));
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if (!label)
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{
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gtk_frame_set_label_widget (frame, NULL);
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}
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else
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{
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GtkWidget *child = gtk_label_new (label);
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gtk_widget_show (child);
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gtk_frame_set_label_widget (frame, child);
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}
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}
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/**
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* gtk_frame_get_label:
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* @frame: a #GtkFrame
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*
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* If the frame’s label widget is a #GtkLabel, returns the
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* text in the label widget. (The frame will have a #GtkLabel
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* for the label widget if a non-%NULL argument was passed
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* to gtk_frame_new().)
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*
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* Returns: (nullable): the text in the label, or %NULL if there
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* was no label widget or the lable widget was not
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* a #GtkLabel. This string is owned by GTK+ and
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* must not be modified or freed.
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**/
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const gchar *
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gtk_frame_get_label (GtkFrame *frame)
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{
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
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if (GTK_IS_LABEL (priv->label_widget))
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return gtk_label_get_text (GTK_LABEL (priv->label_widget));
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else
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return NULL;
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}
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/**
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* gtk_frame_set_label_widget:
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* @frame: a #GtkFrame
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* @label_widget: (nullable): the new label widget
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*
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* Sets the #GtkFrame:label-widget for the frame. This is the widget that
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* will appear embedded in the top edge of the frame as a title.
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**/
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void
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gtk_frame_set_label_widget (GtkFrame *frame,
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GtkWidget *label_widget)
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{
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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gboolean need_resize = FALSE;
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g_return_if_fail (GTK_IS_FRAME (frame));
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g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
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g_return_if_fail (label_widget == NULL || gtk_widget_get_parent (label_widget) == NULL);
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if (priv->label_widget == label_widget)
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return;
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if (priv->label_widget)
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{
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need_resize = gtk_widget_get_visible (priv->label_widget);
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gtk_widget_unparent (priv->label_widget);
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}
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priv->label_widget = label_widget;
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if (label_widget)
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{
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priv->label_widget = label_widget;
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gtk_widget_set_parent (label_widget, GTK_WIDGET (frame));
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need_resize |= gtk_widget_get_visible (label_widget);
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}
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if (gtk_widget_get_visible (GTK_WIDGET (frame)) && need_resize)
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gtk_widget_queue_resize (GTK_WIDGET (frame));
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g_object_freeze_notify (G_OBJECT (frame));
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g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL_WIDGET]);
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g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL]);
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g_object_thaw_notify (G_OBJECT (frame));
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}
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/**
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* gtk_frame_get_label_widget:
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* @frame: a #GtkFrame
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*
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* Retrieves the label widget for the frame. See
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* gtk_frame_set_label_widget().
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*
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* Returns: (nullable) (transfer none): the label widget, or %NULL if
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* there is none.
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**/
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GtkWidget *
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gtk_frame_get_label_widget (GtkFrame *frame)
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{
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
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return priv->label_widget;
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}
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/**
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* gtk_frame_set_label_align:
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* @frame: a #GtkFrame
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* @xalign: The position of the label along the top edge
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* of the widget. A value of 0.0 represents left alignment;
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* 1.0 represents right alignment.
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*
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* Sets the X alignment of the frame widget’s label. The
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* default value for a newly created frame is 0.0.
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**/
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void
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gtk_frame_set_label_align (GtkFrame *frame,
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gfloat xalign)
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{
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GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
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g_return_if_fail (GTK_IS_FRAME (frame));
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xalign = CLAMP (xalign, 0.0, 1.0);
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g_object_freeze_notify (G_OBJECT (frame));
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if (xalign != priv->label_xalign)
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{
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priv->label_xalign = xalign;
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g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL_XALIGN]);
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}
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g_object_thaw_notify (G_OBJECT (frame));
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gtk_widget_queue_resize (GTK_WIDGET (frame));
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}
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/**
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* gtk_frame_get_label_align:
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* @frame: a #GtkFrame
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*
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* Retrieves the X alignment of the frame’s label. See
|
||
* gtk_frame_set_label_align().
|
||
**/
|
||
gfloat
|
||
gtk_frame_get_label_align (GtkFrame *frame)
|
||
{
|
||
GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
|
||
|
||
g_return_val_if_fail (GTK_IS_FRAME (frame), 0.0);
|
||
|
||
return priv->label_xalign;
|
||
}
|
||
|
||
/**
|
||
* gtk_frame_set_shadow_type:
|
||
* @frame: a #GtkFrame
|
||
* @type: the new #GtkShadowType
|
||
*
|
||
* Sets the #GtkFrame:shadow-type for @frame, i.e. whether it is drawn without
|
||
* (%GTK_SHADOW_NONE) or with (other values) a visible border. Values other than
|
||
* %GTK_SHADOW_NONE are treated identically by GtkFrame. The chosen type is
|
||
* applied by removing or adding the .flat class to the main CSS node, frame.
|
||
**/
|
||
void
|
||
gtk_frame_set_shadow_type (GtkFrame *frame,
|
||
GtkShadowType type)
|
||
{
|
||
GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
|
||
|
||
g_return_if_fail (GTK_IS_FRAME (frame));
|
||
|
||
if ((GtkShadowType) priv->shadow_type != type)
|
||
{
|
||
priv->shadow_type = type;
|
||
|
||
if (type == GTK_SHADOW_NONE)
|
||
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (frame)),
|
||
GTK_STYLE_CLASS_FLAT);
|
||
else
|
||
gtk_style_context_remove_class (gtk_widget_get_style_context (GTK_WIDGET (frame)),
|
||
GTK_STYLE_CLASS_FLAT);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_SHADOW_TYPE]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_frame_get_shadow_type:
|
||
* @frame: a #GtkFrame
|
||
*
|
||
* Retrieves the shadow type of the frame. See
|
||
* gtk_frame_set_shadow_type().
|
||
*
|
||
* Returns: the current shadow type of the frame.
|
||
**/
|
||
GtkShadowType
|
||
gtk_frame_get_shadow_type (GtkFrame *frame)
|
||
{
|
||
GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
|
||
|
||
g_return_val_if_fail (GTK_IS_FRAME (frame), GTK_SHADOW_ETCHED_IN);
|
||
|
||
return priv->shadow_type;
|
||
}
|
||
|
||
static void
|
||
gtk_frame_size_allocate (GtkWidget *widget,
|
||
int width,
|
||
int height,
|
||
int baseline)
|
||
{
|
||
GtkFrame *frame = GTK_FRAME (widget);
|
||
GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
|
||
GtkWidget *child;
|
||
GtkAllocation new_allocation;
|
||
|
||
gtk_frame_compute_child_allocation (frame, &new_allocation);
|
||
|
||
if (priv->label_widget &&
|
||
gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
GtkAllocation label_allocation;
|
||
int nat_width, label_width, label_height;
|
||
float xalign;
|
||
|
||
if (_gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
|
||
xalign = priv->label_xalign;
|
||
else
|
||
xalign = 1 - priv->label_xalign;
|
||
|
||
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_HORIZONTAL, -1,
|
||
NULL, &nat_width, NULL, NULL);
|
||
label_width = MIN (new_allocation.width, nat_width);
|
||
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_VERTICAL, width,
|
||
&label_height, NULL, NULL, NULL);
|
||
|
||
label_allocation.x = new_allocation.x + (new_allocation.width - width) * xalign;
|
||
label_allocation.y = new_allocation.y - label_height;
|
||
label_allocation.height = label_height;
|
||
label_allocation.width = label_width;
|
||
|
||
gtk_widget_size_allocate (priv->label_widget, &label_allocation, -1);
|
||
}
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (widget));
|
||
if (child && gtk_widget_get_visible (child))
|
||
gtk_widget_size_allocate (child, &new_allocation, -1);
|
||
}
|
||
|
||
static void
|
||
gtk_frame_compute_child_allocation (GtkFrame *frame,
|
||
GtkAllocation *child_allocation)
|
||
{
|
||
g_return_if_fail (GTK_IS_FRAME (frame));
|
||
g_return_if_fail (child_allocation != NULL);
|
||
|
||
GTK_FRAME_GET_CLASS (frame)->compute_child_allocation (frame, child_allocation);
|
||
}
|
||
|
||
static void
|
||
gtk_frame_real_compute_child_allocation (GtkFrame *frame,
|
||
GtkAllocation *child_allocation)
|
||
{
|
||
GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
|
||
int frame_width, frame_height;
|
||
gint height;
|
||
|
||
frame_width = gtk_widget_get_width (GTK_WIDGET (frame));
|
||
frame_height = gtk_widget_get_height (GTK_WIDGET (frame));
|
||
|
||
if (priv->label_widget)
|
||
{
|
||
gint nat_width, width;
|
||
|
||
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_HORIZONTAL, -1,
|
||
NULL, &nat_width, NULL, NULL);
|
||
width = MIN (frame_width, nat_width);
|
||
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_VERTICAL, width,
|
||
&height, NULL, NULL, NULL);
|
||
}
|
||
else
|
||
height = 0;
|
||
|
||
child_allocation->x = 0;
|
||
child_allocation->y = height;
|
||
child_allocation->width = MAX (1, frame_width);
|
||
child_allocation->height = MAX (1, frame_height - height);
|
||
}
|
||
|
||
static void
|
||
gtk_frame_measure (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
gint for_size,
|
||
gint *minimum,
|
||
gint *natural,
|
||
gint *minimum_baseline,
|
||
gint *natural_baseline)
|
||
{
|
||
GtkFrame *frame = GTK_FRAME (widget);
|
||
GtkFramePrivate *priv = gtk_frame_get_instance_private (frame);
|
||
GtkWidget *child;
|
||
int child_min, child_nat;
|
||
|
||
child = gtk_bin_get_child (GTK_BIN (widget));
|
||
if (child && gtk_widget_get_visible (child))
|
||
{
|
||
gtk_widget_measure (child, orientation, for_size, &child_min, &child_nat, NULL, NULL);
|
||
|
||
*minimum = child_min;
|
||
*natural = child_nat;
|
||
}
|
||
else
|
||
{
|
||
*minimum = 0;
|
||
*natural = 0;
|
||
}
|
||
|
||
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
|
||
{
|
||
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
||
{
|
||
gtk_widget_measure (priv->label_widget, orientation, -1, &child_min, &child_nat, NULL, NULL);
|
||
*minimum = MAX (child_min, *minimum);
|
||
*natural = MAX (child_nat, *natural);
|
||
}
|
||
else
|
||
{
|
||
gtk_widget_measure (priv->label_widget, orientation, for_size, &child_min, &child_nat, NULL, NULL);
|
||
|
||
*minimum += child_min;
|
||
*natural += child_nat;
|
||
}
|
||
}
|
||
}
|
||
|