forked from AuroraMiddleware/gtk
fcbbd763cd
The Gtk-custom.c file in gir-repository contained a number of introspection annotations. Merge those into the GTK source files. Some documentation was moved from the tmpl/ files to accomodate the addition of annotations.
1855 lines
63 KiB
C
1855 lines
63 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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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 <math.h>
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#include <gdk/gdkkeysyms.h>
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#include "gtkbindings.h"
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#include "gtkextendedlayout.h"
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#include "gtkmarshalers.h"
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#include "gtkscrolledwindow.h"
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#include "gtkwindow.h"
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#include "gtkprivate.h"
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#include "gtkintl.h"
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#include "gtkalias.h"
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/* scrolled window policy and size requisition handling:
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*
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* gtk size requisition works as follows:
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* a widget upon size-request reports the width and height that it finds
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* to be best suited to display its contents, including children.
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* the width and/or height reported from a widget upon size requisition
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* may be overidden by the user by specifying a width and/or height
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* other than 0 through gtk_widget_set_size_request().
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*
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* a scrolled window needs (for implementing all three policy types) to
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* request its width and height based on two different rationales.
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* 1) the user wants the scrolled window to just fit into the space
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* that it gets allocated for a specifc dimension.
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* 1.1) this does not apply if the user specified a concrete value
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* value for that specific dimension by either specifying usize for the
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* scrolled window or for its child.
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* 2) the user wants the scrolled window to take as much space up as
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* is desired by the child for a specifc dimension (i.e. POLICY_NEVER).
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*
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* also, kinda obvious:
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* 3) a user would certainly not have choosen a scrolled window as a container
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* for the child, if the resulting allocation takes up more space than the
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* child would have allocated without the scrolled window.
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*
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* conclusions:
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* A) from 1) follows: the scrolled window shouldn't request more space for a
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* specifc dimension than is required at minimum.
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* B) from 1.1) follows: the requisition may be overidden by usize of the scrolled
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* window (done automatically) or by usize of the child (needs to be checked).
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* C) from 2) follows: for POLICY_NEVER, the scrolled window simply reports the
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* child's dimension.
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* D) from 3) follows: the scrolled window child's minimum width and minimum height
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* under A) at least correspond to the space taken up by its scrollbars.
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*/
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#define DEFAULT_SCROLLBAR_SPACING 3
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typedef struct {
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gboolean window_placement_set;
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GtkCornerType real_window_placement;
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} GtkScrolledWindowPrivate;
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#define GTK_SCROLLED_WINDOW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SCROLLED_WINDOW, GtkScrolledWindowPrivate))
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enum {
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PROP_0,
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PROP_HADJUSTMENT,
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PROP_VADJUSTMENT,
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PROP_HSCROLLBAR_POLICY,
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PROP_VSCROLLBAR_POLICY,
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PROP_WINDOW_PLACEMENT,
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PROP_WINDOW_PLACEMENT_SET,
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PROP_SHADOW_TYPE
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};
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/* Signals */
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enum
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{
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SCROLL_CHILD,
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MOVE_FOCUS_OUT,
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LAST_SIGNAL
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};
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static void gtk_scrolled_window_destroy (GtkObject *object);
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static void gtk_scrolled_window_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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static void gtk_scrolled_window_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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static void gtk_scrolled_window_screen_changed (GtkWidget *widget,
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GdkScreen *previous_screen);
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static gboolean gtk_scrolled_window_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_scrolled_window_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gtk_scrolled_window_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static gboolean gtk_scrolled_window_scroll_event (GtkWidget *widget,
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GdkEventScroll *event);
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static gboolean gtk_scrolled_window_focus (GtkWidget *widget,
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GtkDirectionType direction);
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static void gtk_scrolled_window_add (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_scrolled_window_remove (GtkContainer *container,
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GtkWidget *widget);
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static void gtk_scrolled_window_forall (GtkContainer *container,
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gboolean include_internals,
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GtkCallback callback,
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gpointer callback_data);
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static gboolean gtk_scrolled_window_scroll_child (GtkScrolledWindow *scrolled_window,
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GtkScrollType scroll,
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gboolean horizontal);
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static void gtk_scrolled_window_move_focus_out (GtkScrolledWindow *scrolled_window,
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GtkDirectionType direction_type);
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static void gtk_scrolled_window_relative_allocation(GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_scrolled_window_adjustment_changed (GtkAdjustment *adjustment,
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gpointer data);
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static void gtk_scrolled_window_update_real_placement (GtkScrolledWindow *scrolled_window);
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static void gtk_scrolled_window_extended_layout_init (GtkExtendedLayoutIface *iface);
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static guint signals[LAST_SIGNAL] = {0};
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G_DEFINE_TYPE_WITH_CODE (GtkScrolledWindow, gtk_scrolled_window, GTK_TYPE_BIN,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
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gtk_scrolled_window_extended_layout_init))
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static void
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add_scroll_binding (GtkBindingSet *binding_set,
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guint keyval,
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GdkModifierType mask,
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GtkScrollType scroll,
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gboolean horizontal)
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{
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guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
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gtk_binding_entry_add_signal (binding_set, keyval, mask,
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"scroll-child", 2,
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GTK_TYPE_SCROLL_TYPE, scroll,
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G_TYPE_BOOLEAN, horizontal);
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gtk_binding_entry_add_signal (binding_set, keypad_keyval, mask,
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"scroll-child", 2,
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GTK_TYPE_SCROLL_TYPE, scroll,
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G_TYPE_BOOLEAN, horizontal);
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}
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static void
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add_tab_bindings (GtkBindingSet *binding_set,
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GdkModifierType modifiers,
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GtkDirectionType direction)
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{
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gtk_binding_entry_add_signal (binding_set, GDK_Tab, modifiers,
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"move-focus-out", 1,
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GTK_TYPE_DIRECTION_TYPE, direction);
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gtk_binding_entry_add_signal (binding_set, GDK_KP_Tab, modifiers,
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"move-focus-out", 1,
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GTK_TYPE_DIRECTION_TYPE, direction);
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}
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static void
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gtk_scrolled_window_class_init (GtkScrolledWindowClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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GtkContainerClass *container_class;
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GtkBindingSet *binding_set;
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object_class = (GtkObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
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container_class = (GtkContainerClass*) class;
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gobject_class->set_property = gtk_scrolled_window_set_property;
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gobject_class->get_property = gtk_scrolled_window_get_property;
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object_class->destroy = gtk_scrolled_window_destroy;
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widget_class->screen_changed = gtk_scrolled_window_screen_changed;
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widget_class->expose_event = gtk_scrolled_window_expose;
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widget_class->size_request = gtk_scrolled_window_size_request;
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widget_class->size_allocate = gtk_scrolled_window_size_allocate;
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widget_class->scroll_event = gtk_scrolled_window_scroll_event;
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widget_class->focus = gtk_scrolled_window_focus;
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container_class->add = gtk_scrolled_window_add;
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container_class->remove = gtk_scrolled_window_remove;
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container_class->forall = gtk_scrolled_window_forall;
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class->scrollbar_spacing = -1;
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class->scroll_child = gtk_scrolled_window_scroll_child;
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class->move_focus_out = gtk_scrolled_window_move_focus_out;
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g_object_class_install_property (gobject_class,
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PROP_HADJUSTMENT,
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g_param_spec_object ("hadjustment",
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P_("Horizontal Adjustment"),
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P_("The GtkAdjustment for the horizontal position"),
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GTK_TYPE_ADJUSTMENT,
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GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class,
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PROP_VADJUSTMENT,
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g_param_spec_object ("vadjustment",
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P_("Vertical Adjustment"),
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P_("The GtkAdjustment for the vertical position"),
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GTK_TYPE_ADJUSTMENT,
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GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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g_object_class_install_property (gobject_class,
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PROP_HSCROLLBAR_POLICY,
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g_param_spec_enum ("hscrollbar-policy",
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P_("Horizontal Scrollbar Policy"),
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P_("When the horizontal scrollbar is displayed"),
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GTK_TYPE_POLICY_TYPE,
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GTK_POLICY_ALWAYS,
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GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class,
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PROP_VSCROLLBAR_POLICY,
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g_param_spec_enum ("vscrollbar-policy",
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P_("Vertical Scrollbar Policy"),
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P_("When the vertical scrollbar is displayed"),
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GTK_TYPE_POLICY_TYPE,
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GTK_POLICY_ALWAYS,
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GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class,
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PROP_WINDOW_PLACEMENT,
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g_param_spec_enum ("window-placement",
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P_("Window Placement"),
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P_("Where the contents are located with respect to the scrollbars. This property only takes effect if \"window-placement-set\" is TRUE."),
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GTK_TYPE_CORNER_TYPE,
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GTK_CORNER_TOP_LEFT,
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GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
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/**
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* GtkScrolledWindow:window-placement-set:
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*
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* Whether "window-placement" should be used to determine the location
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* of the contents with respect to the scrollbars. Otherwise, the
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* "gtk-scrolled-window-placement" setting is used.
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*
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* Since: 2.10
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*/
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g_object_class_install_property (gobject_class,
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PROP_WINDOW_PLACEMENT_SET,
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g_param_spec_boolean ("window-placement-set",
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P_("Window Placement Set"),
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P_("Whether \"window-placement\" should be used to determine the location of the contents with respect to the scrollbars."),
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FALSE,
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GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class,
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PROP_SHADOW_TYPE,
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g_param_spec_enum ("shadow-type",
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P_("Shadow Type"),
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P_("Style of bevel around the contents"),
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GTK_TYPE_SHADOW_TYPE,
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GTK_SHADOW_NONE,
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GTK_PARAM_READABLE | GTK_PARAM_WRITABLE));
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/**
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* GtkScrolledWindow:scrollbars-within-bevel:
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*
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* Whether to place scrollbars within the scrolled window's bevel.
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*
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* Since: 2.12
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*/
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_boolean ("scrollbars-within-bevel",
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P_("Scrollbars within bevel"),
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P_("Place scrollbars within the scrolled window's bevel"),
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FALSE,
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GTK_PARAM_READABLE));
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("scrollbar-spacing",
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P_("Scrollbar spacing"),
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P_("Number of pixels between the scrollbars and the scrolled window"),
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0,
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G_MAXINT,
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DEFAULT_SCROLLBAR_SPACING,
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GTK_PARAM_READABLE));
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/**
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* GtkSettings:gtk-scrolled-window-placement:
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*
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* Where the contents of scrolled windows are located with respect to the
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* scrollbars, if not overridden by the scrolled window's own placement.
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*
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* Since: 2.10
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*/
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gtk_settings_install_property (g_param_spec_enum ("gtk-scrolled-window-placement",
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P_("Scrolled Window Placement"),
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P_("Where the contents of scrolled windows are located with respect to the scrollbars, if not overridden by the scrolled window's own placement."),
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GTK_TYPE_CORNER_TYPE,
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GTK_CORNER_TOP_LEFT,
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G_PARAM_READABLE | G_PARAM_WRITABLE));
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signals[SCROLL_CHILD] =
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g_signal_new (I_("scroll-child"),
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GtkScrolledWindowClass, scroll_child),
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NULL, NULL,
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_gtk_marshal_BOOLEAN__ENUM_BOOLEAN,
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G_TYPE_BOOLEAN, 2,
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GTK_TYPE_SCROLL_TYPE,
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G_TYPE_BOOLEAN);
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signals[MOVE_FOCUS_OUT] =
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g_signal_new (I_("move-focus-out"),
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GtkScrolledWindowClass, move_focus_out),
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NULL, NULL,
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_gtk_marshal_VOID__ENUM,
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G_TYPE_NONE, 1,
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GTK_TYPE_DIRECTION_TYPE);
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binding_set = gtk_binding_set_by_class (class);
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add_scroll_binding (binding_set, GDK_Left, GDK_CONTROL_MASK, GTK_SCROLL_STEP_BACKWARD, TRUE);
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add_scroll_binding (binding_set, GDK_Right, GDK_CONTROL_MASK, GTK_SCROLL_STEP_FORWARD, TRUE);
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add_scroll_binding (binding_set, GDK_Up, GDK_CONTROL_MASK, GTK_SCROLL_STEP_BACKWARD, FALSE);
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add_scroll_binding (binding_set, GDK_Down, GDK_CONTROL_MASK, GTK_SCROLL_STEP_FORWARD, FALSE);
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add_scroll_binding (binding_set, GDK_Page_Up, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_BACKWARD, TRUE);
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add_scroll_binding (binding_set, GDK_Page_Down, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_FORWARD, TRUE);
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add_scroll_binding (binding_set, GDK_Page_Up, 0, GTK_SCROLL_PAGE_BACKWARD, FALSE);
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add_scroll_binding (binding_set, GDK_Page_Down, 0, GTK_SCROLL_PAGE_FORWARD, FALSE);
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add_scroll_binding (binding_set, GDK_Home, GDK_CONTROL_MASK, GTK_SCROLL_START, TRUE);
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add_scroll_binding (binding_set, GDK_End, GDK_CONTROL_MASK, GTK_SCROLL_END, TRUE);
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add_scroll_binding (binding_set, GDK_Home, 0, GTK_SCROLL_START, FALSE);
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add_scroll_binding (binding_set, GDK_End, 0, GTK_SCROLL_END, FALSE);
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add_tab_bindings (binding_set, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
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add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
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g_type_class_add_private (class, sizeof (GtkScrolledWindowPrivate));
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}
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static void
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gtk_scrolled_window_init (GtkScrolledWindow *scrolled_window)
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{
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GTK_WIDGET_SET_FLAGS (scrolled_window, GTK_NO_WINDOW | GTK_CAN_FOCUS);
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scrolled_window->hscrollbar = NULL;
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scrolled_window->vscrollbar = NULL;
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scrolled_window->hscrollbar_policy = GTK_POLICY_ALWAYS;
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scrolled_window->vscrollbar_policy = GTK_POLICY_ALWAYS;
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scrolled_window->hscrollbar_visible = FALSE;
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scrolled_window->vscrollbar_visible = FALSE;
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scrolled_window->focus_out = FALSE;
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scrolled_window->window_placement = GTK_CORNER_TOP_LEFT;
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gtk_scrolled_window_update_real_placement (scrolled_window);
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}
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/**
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* gtk_scrolled_window_new:
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* @hadjustment: (allow-none): horizontal adjustment
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* @vadjustment: (allow-none): vertical adjustment
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*
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* Creates a new scrolled window.
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*
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* The two arguments are the scrolled window's adjustments; these will be
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* shared with the scrollbars and the child widget to keep the bars in sync
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* with the child. Usually you want to pass %NULL for the adjustments, which
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* will cause the scrolled window to create them for you.
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*
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* Returns: a new scrolled window
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*/
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GtkWidget*
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gtk_scrolled_window_new (GtkAdjustment *hadjustment,
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GtkAdjustment *vadjustment)
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{
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GtkWidget *scrolled_window;
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if (hadjustment)
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g_return_val_if_fail (GTK_IS_ADJUSTMENT (hadjustment), NULL);
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if (vadjustment)
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g_return_val_if_fail (GTK_IS_ADJUSTMENT (vadjustment), NULL);
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scrolled_window = g_object_new (GTK_TYPE_SCROLLED_WINDOW,
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"hadjustment", hadjustment,
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"vadjustment", vadjustment,
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NULL);
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return scrolled_window;
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}
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|
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/**
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* gtk_scrolled_window_set_hadjustment:
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* @scrolled_window: a #GtkScrolledWindow
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* @hadjustment: horizontal scroll adjustment
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*
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* Sets the #GtkAdjustment for the horizontal scrollbar.
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*/
|
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void
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gtk_scrolled_window_set_hadjustment (GtkScrolledWindow *scrolled_window,
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GtkAdjustment *hadjustment)
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{
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GtkBin *bin;
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g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
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if (hadjustment)
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g_return_if_fail (GTK_IS_ADJUSTMENT (hadjustment));
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else
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hadjustment = (GtkAdjustment*) g_object_new (GTK_TYPE_ADJUSTMENT, NULL);
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|
|
bin = GTK_BIN (scrolled_window);
|
|
|
|
if (!scrolled_window->hscrollbar)
|
|
{
|
|
gtk_widget_push_composite_child ();
|
|
scrolled_window->hscrollbar = gtk_hscrollbar_new (hadjustment);
|
|
gtk_widget_set_composite_name (scrolled_window->hscrollbar, "hscrollbar");
|
|
gtk_widget_pop_composite_child ();
|
|
|
|
gtk_widget_set_parent (scrolled_window->hscrollbar, GTK_WIDGET (scrolled_window));
|
|
g_object_ref (scrolled_window->hscrollbar);
|
|
gtk_widget_show (scrolled_window->hscrollbar);
|
|
}
|
|
else
|
|
{
|
|
GtkAdjustment *old_adjustment;
|
|
|
|
old_adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
|
|
if (old_adjustment == hadjustment)
|
|
return;
|
|
|
|
g_signal_handlers_disconnect_by_func (old_adjustment,
|
|
gtk_scrolled_window_adjustment_changed,
|
|
scrolled_window);
|
|
gtk_range_set_adjustment (GTK_RANGE (scrolled_window->hscrollbar),
|
|
hadjustment);
|
|
}
|
|
hadjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
|
|
g_signal_connect (hadjustment,
|
|
"changed",
|
|
G_CALLBACK (gtk_scrolled_window_adjustment_changed),
|
|
scrolled_window);
|
|
gtk_scrolled_window_adjustment_changed (hadjustment, scrolled_window);
|
|
|
|
if (bin->child)
|
|
gtk_widget_set_scroll_adjustments (bin->child,
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)),
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar)));
|
|
|
|
g_object_notify (G_OBJECT (scrolled_window), "hadjustment");
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_set_vadjustment:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
* @vadjustment: vertical scroll adjustment
|
|
*
|
|
* Sets the #GtkAdjustment for the vertical scrollbar.
|
|
*/
|
|
void
|
|
gtk_scrolled_window_set_vadjustment (GtkScrolledWindow *scrolled_window,
|
|
GtkAdjustment *vadjustment)
|
|
{
|
|
GtkBin *bin;
|
|
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
if (vadjustment)
|
|
g_return_if_fail (GTK_IS_ADJUSTMENT (vadjustment));
|
|
else
|
|
vadjustment = (GtkAdjustment*) g_object_new (GTK_TYPE_ADJUSTMENT, NULL);
|
|
|
|
bin = GTK_BIN (scrolled_window);
|
|
|
|
if (!scrolled_window->vscrollbar)
|
|
{
|
|
gtk_widget_push_composite_child ();
|
|
scrolled_window->vscrollbar = gtk_vscrollbar_new (vadjustment);
|
|
gtk_widget_set_composite_name (scrolled_window->vscrollbar, "vscrollbar");
|
|
gtk_widget_pop_composite_child ();
|
|
|
|
gtk_widget_set_parent (scrolled_window->vscrollbar, GTK_WIDGET (scrolled_window));
|
|
g_object_ref (scrolled_window->vscrollbar);
|
|
gtk_widget_show (scrolled_window->vscrollbar);
|
|
}
|
|
else
|
|
{
|
|
GtkAdjustment *old_adjustment;
|
|
|
|
old_adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
|
|
if (old_adjustment == vadjustment)
|
|
return;
|
|
|
|
g_signal_handlers_disconnect_by_func (old_adjustment,
|
|
gtk_scrolled_window_adjustment_changed,
|
|
scrolled_window);
|
|
gtk_range_set_adjustment (GTK_RANGE (scrolled_window->vscrollbar),
|
|
vadjustment);
|
|
}
|
|
vadjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
|
|
g_signal_connect (vadjustment,
|
|
"changed",
|
|
G_CALLBACK (gtk_scrolled_window_adjustment_changed),
|
|
scrolled_window);
|
|
gtk_scrolled_window_adjustment_changed (vadjustment, scrolled_window);
|
|
|
|
if (bin->child)
|
|
gtk_widget_set_scroll_adjustments (bin->child,
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)),
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar)));
|
|
|
|
g_object_notify (G_OBJECT (scrolled_window), "vadjustment");
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_hadjustment:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Returns the horizontal scrollbar's adjustment, used to connect the
|
|
* horizontal scrollbar to the child widget's horizontal scroll
|
|
* functionality.
|
|
*
|
|
* Returns: the horizontal #GtkAdjustment
|
|
*/
|
|
GtkAdjustment*
|
|
gtk_scrolled_window_get_hadjustment (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
|
|
|
|
return (scrolled_window->hscrollbar ?
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)) :
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_vadjustment:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Returns the vertical scrollbar's adjustment, used to connect the
|
|
* vertical scrollbar to the child widget's vertical scroll
|
|
* functionality.
|
|
*
|
|
* Returns: the vertical #GtkAdjustment
|
|
*/
|
|
GtkAdjustment*
|
|
gtk_scrolled_window_get_vadjustment (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
|
|
|
|
return (scrolled_window->vscrollbar ?
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar)) :
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_hscrollbar:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Returns the horizontal scrollbar of @scrolled_window.
|
|
*
|
|
* Returns: the horizontal scrollbar of the scrolled window, or
|
|
* %NULL if it does not have one.
|
|
*
|
|
* Since: 2.8
|
|
*/
|
|
GtkWidget*
|
|
gtk_scrolled_window_get_hscrollbar (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
|
|
|
|
return scrolled_window->hscrollbar;
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_vscrollbar:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Returns the vertical scrollbar of @scrolled_window.
|
|
*
|
|
* Returns: the vertical scrollbar of the scrolled window, or
|
|
* %NULL if it does not have one.
|
|
*
|
|
* Since: 2.8
|
|
*/
|
|
GtkWidget*
|
|
gtk_scrolled_window_get_vscrollbar (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), NULL);
|
|
|
|
return scrolled_window->vscrollbar;
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_set_policy:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
* @hscrollbar_policy: policy for horizontal bar
|
|
* @vscrollbar_policy: policy for vertical bar
|
|
*
|
|
* Sets the scrollbar policy for the horizontal and vertical scrollbars.
|
|
*
|
|
* The policy determines when the scrollbar should appear; it is a value
|
|
* from the #GtkPolicyType enumeration. If %GTK_POLICY_ALWAYS, the
|
|
* scrollbar is always present; if %GTK_POLICY_NEVER, the scrollbar is
|
|
* never present; if %GTK_POLICY_AUTOMATIC, the scrollbar is present only
|
|
* if needed (that is, if the slider part of the bar would be smaller
|
|
* than the trough - the display is larger than the page size).
|
|
*/
|
|
void
|
|
gtk_scrolled_window_set_policy (GtkScrolledWindow *scrolled_window,
|
|
GtkPolicyType hscrollbar_policy,
|
|
GtkPolicyType vscrollbar_policy)
|
|
{
|
|
GObject *object = G_OBJECT (scrolled_window);
|
|
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
|
|
if ((scrolled_window->hscrollbar_policy != hscrollbar_policy) ||
|
|
(scrolled_window->vscrollbar_policy != vscrollbar_policy))
|
|
{
|
|
scrolled_window->hscrollbar_policy = hscrollbar_policy;
|
|
scrolled_window->vscrollbar_policy = vscrollbar_policy;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
|
|
|
|
g_object_freeze_notify (object);
|
|
g_object_notify (object, "hscrollbar-policy");
|
|
g_object_notify (object, "vscrollbar-policy");
|
|
g_object_thaw_notify (object);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_policy:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
* @hscrollbar_policy: location to store the policy for the horizontal
|
|
* scrollbar, or %NULL.
|
|
* @vscrollbar_policy: location to store the policy for the vertical
|
|
* scrollbar, or %NULL.
|
|
*
|
|
* Retrieves the current policy values for the horizontal and vertical
|
|
* scrollbars. See gtk_scrolled_window_set_policy().
|
|
*/
|
|
void
|
|
gtk_scrolled_window_get_policy (GtkScrolledWindow *scrolled_window,
|
|
GtkPolicyType *hscrollbar_policy,
|
|
GtkPolicyType *vscrollbar_policy)
|
|
{
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
|
|
if (hscrollbar_policy)
|
|
*hscrollbar_policy = scrolled_window->hscrollbar_policy;
|
|
if (vscrollbar_policy)
|
|
*vscrollbar_policy = scrolled_window->vscrollbar_policy;
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_update_real_placement (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
|
|
GtkSettings *settings;
|
|
|
|
settings = gtk_widget_get_settings (GTK_WIDGET (scrolled_window));
|
|
|
|
if (priv->window_placement_set || settings == NULL)
|
|
priv->real_window_placement = scrolled_window->window_placement;
|
|
else
|
|
g_object_get (settings,
|
|
"gtk-scrolled-window-placement",
|
|
&priv->real_window_placement,
|
|
NULL);
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_set_placement_internal (GtkScrolledWindow *scrolled_window,
|
|
GtkCornerType window_placement)
|
|
{
|
|
if (scrolled_window->window_placement != window_placement)
|
|
{
|
|
scrolled_window->window_placement = window_placement;
|
|
|
|
gtk_scrolled_window_update_real_placement (scrolled_window);
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
|
|
|
|
g_object_notify (G_OBJECT (scrolled_window), "window-placement");
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_set_placement_set (GtkScrolledWindow *scrolled_window,
|
|
gboolean placement_set,
|
|
gboolean emit_resize)
|
|
{
|
|
GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
|
|
|
|
if (priv->window_placement_set != placement_set)
|
|
{
|
|
priv->window_placement_set = placement_set;
|
|
|
|
gtk_scrolled_window_update_real_placement (scrolled_window);
|
|
if (emit_resize)
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
|
|
|
|
g_object_notify (G_OBJECT (scrolled_window), "window-placement-set");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_set_placement:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
* @window_placement: position of the child window
|
|
*
|
|
* Sets the placement of the contents with respect to the scrollbars
|
|
* for the scrolled window.
|
|
*
|
|
* The default is %GTK_CORNER_TOP_LEFT, meaning the child is
|
|
* in the top left, with the scrollbars underneath and to the right.
|
|
* Other values in #GtkCornerType are %GTK_CORNER_TOP_RIGHT,
|
|
* %GTK_CORNER_BOTTOM_LEFT, and %GTK_CORNER_BOTTOM_RIGHT.
|
|
*
|
|
* See also gtk_scrolled_window_get_placement() and
|
|
* gtk_scrolled_window_unset_placement().
|
|
*/
|
|
void
|
|
gtk_scrolled_window_set_placement (GtkScrolledWindow *scrolled_window,
|
|
GtkCornerType window_placement)
|
|
{
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
|
|
gtk_scrolled_window_set_placement_set (scrolled_window, TRUE, FALSE);
|
|
gtk_scrolled_window_set_placement_internal (scrolled_window, window_placement);
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_placement:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Gets the placement of the contents with respect to the scrollbars
|
|
* for the scrolled window. See gtk_scrolled_window_set_placement().
|
|
*
|
|
* Return value: the current placement value.
|
|
*
|
|
* See also gtk_scrolled_window_set_placement() and
|
|
* gtk_scrolled_window_unset_placement().
|
|
**/
|
|
GtkCornerType
|
|
gtk_scrolled_window_get_placement (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), GTK_CORNER_TOP_LEFT);
|
|
|
|
return scrolled_window->window_placement;
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_unset_placement:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Unsets the placement of the contents with respect to the scrollbars
|
|
* for the scrolled window. If no window placement is set for a scrolled
|
|
* window, it obeys the "gtk-scrolled-window-placement" XSETTING.
|
|
*
|
|
* See also gtk_scrolled_window_set_placement() and
|
|
* gtk_scrolled_window_get_placement().
|
|
*
|
|
* Since: 2.10
|
|
**/
|
|
void
|
|
gtk_scrolled_window_unset_placement (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
|
|
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
|
|
if (priv->window_placement_set)
|
|
{
|
|
priv->window_placement_set = FALSE;
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
|
|
|
|
g_object_notify (G_OBJECT (scrolled_window), "window-placement-set");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_set_shadow_type:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
* @type: kind of shadow to draw around scrolled window contents
|
|
*
|
|
* Changes the type of shadow drawn around the contents of
|
|
* @scrolled_window.
|
|
*
|
|
**/
|
|
void
|
|
gtk_scrolled_window_set_shadow_type (GtkScrolledWindow *scrolled_window,
|
|
GtkShadowType type)
|
|
{
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
g_return_if_fail (type >= GTK_SHADOW_NONE && type <= GTK_SHADOW_ETCHED_OUT);
|
|
|
|
if (scrolled_window->shadow_type != type)
|
|
{
|
|
scrolled_window->shadow_type = type;
|
|
|
|
if (GTK_WIDGET_DRAWABLE (scrolled_window))
|
|
gtk_widget_queue_draw (GTK_WIDGET (scrolled_window));
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_window));
|
|
|
|
g_object_notify (G_OBJECT (scrolled_window), "shadow-type");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_get_shadow_type:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
*
|
|
* Gets the shadow type of the scrolled window. See
|
|
* gtk_scrolled_window_set_shadow_type().
|
|
*
|
|
* Return value: the current shadow type
|
|
**/
|
|
GtkShadowType
|
|
gtk_scrolled_window_get_shadow_type (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), GTK_SHADOW_NONE);
|
|
|
|
return scrolled_window->shadow_type;
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_destroy (GtkObject *object)
|
|
{
|
|
GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (object);
|
|
|
|
if (scrolled_window->hscrollbar)
|
|
{
|
|
gtk_widget_unparent (scrolled_window->hscrollbar);
|
|
gtk_widget_destroy (scrolled_window->hscrollbar);
|
|
g_object_unref (scrolled_window->hscrollbar);
|
|
scrolled_window->hscrollbar = NULL;
|
|
}
|
|
if (scrolled_window->vscrollbar)
|
|
{
|
|
gtk_widget_unparent (scrolled_window->vscrollbar);
|
|
gtk_widget_destroy (scrolled_window->vscrollbar);
|
|
g_object_unref (scrolled_window->vscrollbar);
|
|
scrolled_window->vscrollbar = NULL;
|
|
}
|
|
|
|
GTK_OBJECT_CLASS (gtk_scrolled_window_parent_class)->destroy (object);
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_HADJUSTMENT:
|
|
gtk_scrolled_window_set_hadjustment (scrolled_window,
|
|
g_value_get_object (value));
|
|
break;
|
|
case PROP_VADJUSTMENT:
|
|
gtk_scrolled_window_set_vadjustment (scrolled_window,
|
|
g_value_get_object (value));
|
|
break;
|
|
case PROP_HSCROLLBAR_POLICY:
|
|
gtk_scrolled_window_set_policy (scrolled_window,
|
|
g_value_get_enum (value),
|
|
scrolled_window->vscrollbar_policy);
|
|
break;
|
|
case PROP_VSCROLLBAR_POLICY:
|
|
gtk_scrolled_window_set_policy (scrolled_window,
|
|
scrolled_window->hscrollbar_policy,
|
|
g_value_get_enum (value));
|
|
break;
|
|
case PROP_WINDOW_PLACEMENT:
|
|
gtk_scrolled_window_set_placement_internal (scrolled_window,
|
|
g_value_get_enum (value));
|
|
break;
|
|
case PROP_WINDOW_PLACEMENT_SET:
|
|
gtk_scrolled_window_set_placement_set (scrolled_window,
|
|
g_value_get_boolean (value),
|
|
TRUE);
|
|
break;
|
|
case PROP_SHADOW_TYPE:
|
|
gtk_scrolled_window_set_shadow_type (scrolled_window,
|
|
g_value_get_enum (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (object);
|
|
GtkScrolledWindowPrivate *priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_HADJUSTMENT:
|
|
g_value_set_object (value,
|
|
G_OBJECT (gtk_scrolled_window_get_hadjustment (scrolled_window)));
|
|
break;
|
|
case PROP_VADJUSTMENT:
|
|
g_value_set_object (value,
|
|
G_OBJECT (gtk_scrolled_window_get_vadjustment (scrolled_window)));
|
|
break;
|
|
case PROP_HSCROLLBAR_POLICY:
|
|
g_value_set_enum (value, scrolled_window->hscrollbar_policy);
|
|
break;
|
|
case PROP_VSCROLLBAR_POLICY:
|
|
g_value_set_enum (value, scrolled_window->vscrollbar_policy);
|
|
break;
|
|
case PROP_WINDOW_PLACEMENT:
|
|
g_value_set_enum (value, scrolled_window->window_placement);
|
|
break;
|
|
case PROP_WINDOW_PLACEMENT_SET:
|
|
g_value_set_boolean (value, priv->window_placement_set);
|
|
break;
|
|
case PROP_SHADOW_TYPE:
|
|
g_value_set_enum (value, scrolled_window->shadow_type);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
traverse_container (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
if (GTK_IS_SCROLLED_WINDOW (widget))
|
|
{
|
|
gtk_scrolled_window_update_real_placement (GTK_SCROLLED_WINDOW (widget));
|
|
gtk_widget_queue_resize (widget);
|
|
}
|
|
else if (GTK_IS_CONTAINER (widget))
|
|
gtk_container_forall (GTK_CONTAINER (widget), traverse_container, NULL);
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_settings_changed (GtkSettings *settings)
|
|
{
|
|
GList *list, *l;
|
|
|
|
list = gtk_window_list_toplevels ();
|
|
|
|
for (l = list; l; l = l->next)
|
|
gtk_container_forall (GTK_CONTAINER (l->data),
|
|
traverse_container, NULL);
|
|
|
|
g_list_free (list);
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_screen_changed (GtkWidget *widget,
|
|
GdkScreen *previous_screen)
|
|
{
|
|
GtkSettings *settings;
|
|
guint window_placement_connection;
|
|
|
|
gtk_scrolled_window_update_real_placement (GTK_SCROLLED_WINDOW (widget));
|
|
|
|
if (!gtk_widget_has_screen (widget))
|
|
return;
|
|
|
|
settings = gtk_widget_get_settings (widget);
|
|
|
|
window_placement_connection =
|
|
GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (settings),
|
|
"gtk-scrolled-window-connection"));
|
|
|
|
if (window_placement_connection)
|
|
return;
|
|
|
|
window_placement_connection =
|
|
g_signal_connect (settings, "notify::gtk-scrolled-window-placement",
|
|
G_CALLBACK (gtk_scrolled_window_settings_changed), NULL);
|
|
g_object_set_data (G_OBJECT (settings),
|
|
I_("gtk-scrolled-window-connection"),
|
|
GUINT_TO_POINTER (window_placement_connection));
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_paint (GtkWidget *widget,
|
|
GdkRectangle *area)
|
|
{
|
|
GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (widget);
|
|
|
|
if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
GtkAllocation relative_allocation;
|
|
gboolean scrollbars_within_bevel;
|
|
|
|
gtk_widget_style_get (widget, "scrollbars-within-bevel", &scrollbars_within_bevel, NULL);
|
|
|
|
if (!scrollbars_within_bevel)
|
|
{
|
|
gtk_scrolled_window_relative_allocation (widget, &relative_allocation);
|
|
|
|
relative_allocation.x -= widget->style->xthickness;
|
|
relative_allocation.y -= widget->style->ythickness;
|
|
relative_allocation.width += 2 * widget->style->xthickness;
|
|
relative_allocation.height += 2 * widget->style->ythickness;
|
|
}
|
|
else
|
|
{
|
|
GtkContainer *container = GTK_CONTAINER (widget);
|
|
|
|
relative_allocation.x = container->border_width;
|
|
relative_allocation.y = container->border_width;
|
|
relative_allocation.width = widget->allocation.width - 2 * container->border_width;
|
|
relative_allocation.height = widget->allocation.height - 2 * container->border_width;
|
|
}
|
|
|
|
gtk_paint_shadow (widget->style, widget->window,
|
|
GTK_STATE_NORMAL, scrolled_window->shadow_type,
|
|
area, widget, "scrolled_window",
|
|
widget->allocation.x + relative_allocation.x,
|
|
widget->allocation.y + relative_allocation.y,
|
|
relative_allocation.width,
|
|
relative_allocation.height);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_scrolled_window_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
gtk_scrolled_window_paint (widget, &event->area);
|
|
|
|
GTK_WIDGET_CLASS (gtk_scrolled_window_parent_class)->expose_event (widget, event);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_forall (GtkContainer *container,
|
|
gboolean include_internals,
|
|
GtkCallback callback,
|
|
gpointer callback_data)
|
|
{
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
|
|
g_return_if_fail (callback != NULL);
|
|
|
|
GTK_CONTAINER_CLASS (gtk_scrolled_window_parent_class)->forall (container,
|
|
include_internals,
|
|
callback,
|
|
callback_data);
|
|
if (include_internals)
|
|
{
|
|
GtkScrolledWindow *scrolled_window;
|
|
|
|
scrolled_window = GTK_SCROLLED_WINDOW (container);
|
|
|
|
if (scrolled_window->vscrollbar)
|
|
callback (scrolled_window->vscrollbar, callback_data);
|
|
if (scrolled_window->hscrollbar)
|
|
callback (scrolled_window->hscrollbar, callback_data);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_scrolled_window_scroll_child (GtkScrolledWindow *scrolled_window,
|
|
GtkScrollType scroll,
|
|
gboolean horizontal)
|
|
{
|
|
GtkAdjustment *adjustment = NULL;
|
|
|
|
switch (scroll)
|
|
{
|
|
case GTK_SCROLL_STEP_UP:
|
|
scroll = GTK_SCROLL_STEP_BACKWARD;
|
|
horizontal = FALSE;
|
|
break;
|
|
case GTK_SCROLL_STEP_DOWN:
|
|
scroll = GTK_SCROLL_STEP_FORWARD;
|
|
horizontal = FALSE;
|
|
break;
|
|
case GTK_SCROLL_STEP_LEFT:
|
|
scroll = GTK_SCROLL_STEP_BACKWARD;
|
|
horizontal = TRUE;
|
|
break;
|
|
case GTK_SCROLL_STEP_RIGHT:
|
|
scroll = GTK_SCROLL_STEP_FORWARD;
|
|
horizontal = TRUE;
|
|
break;
|
|
case GTK_SCROLL_PAGE_UP:
|
|
scroll = GTK_SCROLL_PAGE_BACKWARD;
|
|
horizontal = FALSE;
|
|
break;
|
|
case GTK_SCROLL_PAGE_DOWN:
|
|
scroll = GTK_SCROLL_PAGE_FORWARD;
|
|
horizontal = FALSE;
|
|
break;
|
|
case GTK_SCROLL_PAGE_LEFT:
|
|
scroll = GTK_SCROLL_STEP_BACKWARD;
|
|
horizontal = TRUE;
|
|
break;
|
|
case GTK_SCROLL_PAGE_RIGHT:
|
|
scroll = GTK_SCROLL_STEP_FORWARD;
|
|
horizontal = TRUE;
|
|
break;
|
|
case GTK_SCROLL_STEP_BACKWARD:
|
|
case GTK_SCROLL_STEP_FORWARD:
|
|
case GTK_SCROLL_PAGE_BACKWARD:
|
|
case GTK_SCROLL_PAGE_FORWARD:
|
|
case GTK_SCROLL_START:
|
|
case GTK_SCROLL_END:
|
|
break;
|
|
default:
|
|
g_warning ("Invalid scroll type %u for GtkScrolledWindow::scroll-child", scroll);
|
|
return FALSE;
|
|
}
|
|
|
|
if ((horizontal && (!scrolled_window->hscrollbar || !scrolled_window->hscrollbar_visible)) ||
|
|
(!horizontal && (!scrolled_window->vscrollbar || !scrolled_window->vscrollbar_visible)))
|
|
return FALSE;
|
|
|
|
if (horizontal)
|
|
{
|
|
if (scrolled_window->hscrollbar)
|
|
adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar));
|
|
}
|
|
else
|
|
{
|
|
if (scrolled_window->vscrollbar)
|
|
adjustment = gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar));
|
|
}
|
|
|
|
if (adjustment)
|
|
{
|
|
gdouble value = adjustment->value;
|
|
|
|
switch (scroll)
|
|
{
|
|
case GTK_SCROLL_STEP_FORWARD:
|
|
value += adjustment->step_increment;
|
|
break;
|
|
case GTK_SCROLL_STEP_BACKWARD:
|
|
value -= adjustment->step_increment;
|
|
break;
|
|
case GTK_SCROLL_PAGE_FORWARD:
|
|
value += adjustment->page_increment;
|
|
break;
|
|
case GTK_SCROLL_PAGE_BACKWARD:
|
|
value -= adjustment->page_increment;
|
|
break;
|
|
case GTK_SCROLL_START:
|
|
value = adjustment->lower;
|
|
break;
|
|
case GTK_SCROLL_END:
|
|
value = adjustment->upper;
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
|
|
value = CLAMP (value, adjustment->lower, adjustment->upper - adjustment->page_size);
|
|
|
|
gtk_adjustment_set_value (adjustment, value);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_move_focus_out (GtkScrolledWindow *scrolled_window,
|
|
GtkDirectionType direction_type)
|
|
{
|
|
GtkWidget *toplevel;
|
|
|
|
/* Focus out of the scrolled window entirely. We do this by setting
|
|
* a flag, then propagating the focus motion to the notebook.
|
|
*/
|
|
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (scrolled_window));
|
|
if (!GTK_WIDGET_TOPLEVEL (toplevel))
|
|
return;
|
|
|
|
g_object_ref (scrolled_window);
|
|
|
|
scrolled_window->focus_out = TRUE;
|
|
g_signal_emit_by_name (toplevel, "move-focus", direction_type);
|
|
scrolled_window->focus_out = FALSE;
|
|
|
|
g_object_unref (scrolled_window);
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_real_size_request (GtkWidget *widget,
|
|
GtkRequisition *min_requisition,
|
|
GtkRequisition *nat_requisition)
|
|
{
|
|
GtkScrolledWindow *scrolled_window;
|
|
GtkBin *bin;
|
|
gint extra_width;
|
|
gint extra_height;
|
|
gint scrollbar_spacing;
|
|
GtkRequisition hscrollbar_requisition;
|
|
GtkRequisition vscrollbar_requisition;
|
|
GtkRequisition min_child_requisition;
|
|
GtkRequisition nat_child_requisition;
|
|
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
|
|
|
|
scrolled_window = GTK_SCROLLED_WINDOW (widget);
|
|
bin = GTK_BIN (scrolled_window);
|
|
|
|
scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (scrolled_window);
|
|
|
|
extra_width = 0;
|
|
extra_height = 0;
|
|
min_requisition->width = 0;
|
|
min_requisition->height = 0;
|
|
nat_requisition->width = 0;
|
|
nat_requisition->height = 0;
|
|
|
|
gtk_widget_size_request (scrolled_window->hscrollbar,
|
|
&hscrollbar_requisition);
|
|
gtk_widget_size_request (scrolled_window->vscrollbar,
|
|
&vscrollbar_requisition);
|
|
|
|
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
|
|
{
|
|
gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (bin->child),
|
|
&min_child_requisition,
|
|
&nat_child_requisition);
|
|
|
|
if (scrolled_window->hscrollbar_policy == GTK_POLICY_NEVER)
|
|
{
|
|
min_requisition->width += min_child_requisition.width;
|
|
nat_requisition->width += nat_child_requisition.width;
|
|
}
|
|
else
|
|
{
|
|
GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (bin->child, FALSE);
|
|
|
|
if (aux_info && aux_info->width > 0)
|
|
{
|
|
min_requisition->width += aux_info->width;
|
|
nat_requisition->width += aux_info->width;
|
|
extra_width = -1;
|
|
}
|
|
else
|
|
{
|
|
min_requisition->width += vscrollbar_requisition.width;
|
|
nat_requisition->width += vscrollbar_requisition.width;
|
|
}
|
|
}
|
|
|
|
if (scrolled_window->vscrollbar_policy == GTK_POLICY_NEVER)
|
|
{
|
|
min_requisition->height += min_child_requisition.height;
|
|
nat_requisition->height += nat_child_requisition.height;
|
|
}
|
|
else
|
|
{
|
|
GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (bin->child, FALSE);
|
|
|
|
if (aux_info && aux_info->height > 0)
|
|
{
|
|
min_requisition->height += aux_info->height;
|
|
nat_requisition->height += aux_info->height;
|
|
extra_height = -1;
|
|
}
|
|
else
|
|
{
|
|
min_requisition->height += hscrollbar_requisition.height;
|
|
nat_requisition->height += hscrollbar_requisition.height;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (scrolled_window->hscrollbar_policy == GTK_POLICY_AUTOMATIC ||
|
|
scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
|
|
{
|
|
min_requisition->width = MAX (min_requisition->width, hscrollbar_requisition.width);
|
|
nat_requisition->width = MAX (nat_requisition->width, hscrollbar_requisition.width);
|
|
if (!extra_height || scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
|
|
extra_height = scrollbar_spacing + hscrollbar_requisition.height;
|
|
}
|
|
|
|
if (scrolled_window->vscrollbar_policy == GTK_POLICY_AUTOMATIC ||
|
|
scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
|
|
{
|
|
min_requisition->height = MAX (min_requisition->height, vscrollbar_requisition.height);
|
|
nat_requisition->height = MAX (nat_requisition->height, vscrollbar_requisition.height);
|
|
if (!extra_height || scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
|
|
extra_width = scrollbar_spacing + vscrollbar_requisition.width;
|
|
}
|
|
|
|
min_requisition->width += GTK_CONTAINER (widget)->border_width * 2 + MAX (0, extra_width);
|
|
min_requisition->height += GTK_CONTAINER (widget)->border_width * 2 + MAX (0, extra_height);
|
|
nat_requisition->width += GTK_CONTAINER (widget)->border_width * 2 + MAX (0, extra_width);
|
|
nat_requisition->height += GTK_CONTAINER (widget)->border_width * 2 + MAX (0, extra_height);
|
|
|
|
if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
min_requisition->width += 2 * widget->style->xthickness;
|
|
min_requisition->height += 2 * widget->style->ythickness;
|
|
nat_requisition->width += 2 * widget->style->xthickness;
|
|
nat_requisition->height += 2 * widget->style->ythickness;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_size_request (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
GtkRequisition nat_req;
|
|
|
|
gtk_scrolled_window_real_size_request (widget, requisition, &nat_req);
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_relative_allocation (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkScrolledWindow *scrolled_window;
|
|
GtkScrolledWindowPrivate *priv;
|
|
gint scrollbar_spacing;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (allocation != NULL);
|
|
|
|
scrolled_window = GTK_SCROLLED_WINDOW (widget);
|
|
scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (scrolled_window);
|
|
|
|
priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
|
|
|
|
allocation->x = GTK_CONTAINER (widget)->border_width;
|
|
allocation->y = GTK_CONTAINER (widget)->border_width;
|
|
|
|
if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
allocation->x += widget->style->xthickness;
|
|
allocation->y += widget->style->ythickness;
|
|
}
|
|
|
|
allocation->width = MAX (1, (gint)widget->allocation.width - allocation->x * 2);
|
|
allocation->height = MAX (1, (gint)widget->allocation.height - allocation->y * 2);
|
|
|
|
if (scrolled_window->vscrollbar_visible)
|
|
{
|
|
GtkRequisition vscrollbar_requisition;
|
|
gboolean is_rtl;
|
|
|
|
gtk_widget_get_child_requisition (scrolled_window->vscrollbar,
|
|
&vscrollbar_requisition);
|
|
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
|
|
|
|
if ((!is_rtl &&
|
|
(priv->real_window_placement == GTK_CORNER_TOP_RIGHT ||
|
|
priv->real_window_placement == GTK_CORNER_BOTTOM_RIGHT)) ||
|
|
(is_rtl &&
|
|
(priv->real_window_placement == GTK_CORNER_TOP_LEFT ||
|
|
priv->real_window_placement == GTK_CORNER_BOTTOM_LEFT)))
|
|
allocation->x += (vscrollbar_requisition.width + scrollbar_spacing);
|
|
|
|
allocation->width = MAX (1, allocation->width - (vscrollbar_requisition.width + scrollbar_spacing));
|
|
}
|
|
if (scrolled_window->hscrollbar_visible)
|
|
{
|
|
GtkRequisition hscrollbar_requisition;
|
|
gtk_widget_get_child_requisition (scrolled_window->hscrollbar,
|
|
&hscrollbar_requisition);
|
|
|
|
if (priv->real_window_placement == GTK_CORNER_BOTTOM_LEFT ||
|
|
priv->real_window_placement == GTK_CORNER_BOTTOM_RIGHT)
|
|
allocation->y += (hscrollbar_requisition.height + scrollbar_spacing);
|
|
|
|
allocation->height = MAX (1, allocation->height - (hscrollbar_requisition.height + scrollbar_spacing));
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkScrolledWindow *scrolled_window;
|
|
GtkScrolledWindowPrivate *priv;
|
|
GtkBin *bin;
|
|
GtkAllocation relative_allocation;
|
|
GtkAllocation child_allocation;
|
|
gboolean scrollbars_within_bevel;
|
|
gint scrollbar_spacing;
|
|
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (widget));
|
|
g_return_if_fail (allocation != NULL);
|
|
|
|
scrolled_window = GTK_SCROLLED_WINDOW (widget);
|
|
bin = GTK_BIN (scrolled_window);
|
|
|
|
scrollbar_spacing = _gtk_scrolled_window_get_scrollbar_spacing (scrolled_window);
|
|
gtk_widget_style_get (widget, "scrollbars-within-bevel", &scrollbars_within_bevel, NULL);
|
|
|
|
priv = GTK_SCROLLED_WINDOW_GET_PRIVATE (scrolled_window);
|
|
|
|
widget->allocation = *allocation;
|
|
|
|
if (scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS)
|
|
scrolled_window->hscrollbar_visible = TRUE;
|
|
else if (scrolled_window->hscrollbar_policy == GTK_POLICY_NEVER)
|
|
scrolled_window->hscrollbar_visible = FALSE;
|
|
if (scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS)
|
|
scrolled_window->vscrollbar_visible = TRUE;
|
|
else if (scrolled_window->vscrollbar_policy == GTK_POLICY_NEVER)
|
|
scrolled_window->vscrollbar_visible = FALSE;
|
|
|
|
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
|
|
{
|
|
gboolean previous_hvis;
|
|
gboolean previous_vvis;
|
|
guint count = 0;
|
|
|
|
do
|
|
{
|
|
gtk_scrolled_window_relative_allocation (widget, &relative_allocation);
|
|
|
|
child_allocation.x = relative_allocation.x + allocation->x;
|
|
child_allocation.y = relative_allocation.y + allocation->y;
|
|
child_allocation.width = relative_allocation.width;
|
|
child_allocation.height = relative_allocation.height;
|
|
|
|
previous_hvis = scrolled_window->hscrollbar_visible;
|
|
previous_vvis = scrolled_window->vscrollbar_visible;
|
|
|
|
gtk_widget_size_allocate (bin->child, &child_allocation);
|
|
|
|
/* If, after the first iteration, the hscrollbar and the
|
|
* vscrollbar flip visiblity, then we need both.
|
|
*/
|
|
if (count &&
|
|
previous_hvis != scrolled_window->hscrollbar_visible &&
|
|
previous_vvis != scrolled_window->vscrollbar_visible)
|
|
{
|
|
scrolled_window->hscrollbar_visible = TRUE;
|
|
scrolled_window->vscrollbar_visible = TRUE;
|
|
|
|
/* a new resize is already queued at this point,
|
|
* so we will immediatedly get reinvoked
|
|
*/
|
|
return;
|
|
}
|
|
|
|
count++;
|
|
}
|
|
while (previous_hvis != scrolled_window->hscrollbar_visible ||
|
|
previous_vvis != scrolled_window->vscrollbar_visible);
|
|
}
|
|
else
|
|
{
|
|
scrolled_window->hscrollbar_visible = scrolled_window->hscrollbar_policy == GTK_POLICY_ALWAYS;
|
|
scrolled_window->vscrollbar_visible = scrolled_window->vscrollbar_policy == GTK_POLICY_ALWAYS;
|
|
gtk_scrolled_window_relative_allocation (widget, &relative_allocation);
|
|
}
|
|
|
|
if (scrolled_window->hscrollbar_visible)
|
|
{
|
|
GtkRequisition hscrollbar_requisition;
|
|
gtk_widget_get_child_requisition (scrolled_window->hscrollbar,
|
|
&hscrollbar_requisition);
|
|
|
|
if (!GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
|
|
gtk_widget_show (scrolled_window->hscrollbar);
|
|
|
|
child_allocation.x = relative_allocation.x;
|
|
if (priv->real_window_placement == GTK_CORNER_TOP_LEFT ||
|
|
priv->real_window_placement == GTK_CORNER_TOP_RIGHT)
|
|
child_allocation.y = (relative_allocation.y +
|
|
relative_allocation.height +
|
|
scrollbar_spacing +
|
|
(scrolled_window->shadow_type == GTK_SHADOW_NONE ?
|
|
0 : widget->style->ythickness));
|
|
else
|
|
child_allocation.y = GTK_CONTAINER (scrolled_window)->border_width;
|
|
|
|
child_allocation.width = relative_allocation.width;
|
|
child_allocation.height = hscrollbar_requisition.height;
|
|
child_allocation.x += allocation->x;
|
|
child_allocation.y += allocation->y;
|
|
|
|
if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
if (!scrollbars_within_bevel)
|
|
{
|
|
child_allocation.x -= widget->style->xthickness;
|
|
child_allocation.width += 2 * widget->style->xthickness;
|
|
}
|
|
else if (GTK_CORNER_TOP_RIGHT == priv->real_window_placement ||
|
|
GTK_CORNER_TOP_LEFT == priv->real_window_placement)
|
|
{
|
|
child_allocation.y -= widget->style->ythickness;
|
|
}
|
|
else
|
|
{
|
|
child_allocation.y += widget->style->ythickness;
|
|
}
|
|
}
|
|
|
|
gtk_widget_size_allocate (scrolled_window->hscrollbar, &child_allocation);
|
|
}
|
|
else if (GTK_WIDGET_VISIBLE (scrolled_window->hscrollbar))
|
|
gtk_widget_hide (scrolled_window->hscrollbar);
|
|
|
|
if (scrolled_window->vscrollbar_visible)
|
|
{
|
|
GtkRequisition vscrollbar_requisition;
|
|
if (!GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
|
|
gtk_widget_show (scrolled_window->vscrollbar);
|
|
|
|
gtk_widget_get_child_requisition (scrolled_window->vscrollbar,
|
|
&vscrollbar_requisition);
|
|
|
|
if ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL &&
|
|
(priv->real_window_placement == GTK_CORNER_TOP_RIGHT ||
|
|
priv->real_window_placement == GTK_CORNER_BOTTOM_RIGHT)) ||
|
|
(gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR &&
|
|
(priv->real_window_placement == GTK_CORNER_TOP_LEFT ||
|
|
priv->real_window_placement == GTK_CORNER_BOTTOM_LEFT)))
|
|
child_allocation.x = (relative_allocation.x +
|
|
relative_allocation.width +
|
|
scrollbar_spacing +
|
|
(scrolled_window->shadow_type == GTK_SHADOW_NONE ?
|
|
0 : widget->style->xthickness));
|
|
else
|
|
child_allocation.x = GTK_CONTAINER (scrolled_window)->border_width;
|
|
|
|
child_allocation.y = relative_allocation.y;
|
|
child_allocation.width = vscrollbar_requisition.width;
|
|
child_allocation.height = relative_allocation.height;
|
|
child_allocation.x += allocation->x;
|
|
child_allocation.y += allocation->y;
|
|
|
|
if (scrolled_window->shadow_type != GTK_SHADOW_NONE)
|
|
{
|
|
if (!scrollbars_within_bevel)
|
|
{
|
|
child_allocation.y -= widget->style->ythickness;
|
|
child_allocation.height += 2 * widget->style->ythickness;
|
|
}
|
|
else if (GTK_CORNER_BOTTOM_LEFT == priv->real_window_placement ||
|
|
GTK_CORNER_TOP_LEFT == priv->real_window_placement)
|
|
{
|
|
child_allocation.x -= widget->style->xthickness;
|
|
}
|
|
else
|
|
{
|
|
child_allocation.x += widget->style->xthickness;
|
|
}
|
|
}
|
|
|
|
gtk_widget_size_allocate (scrolled_window->vscrollbar, &child_allocation);
|
|
}
|
|
else if (GTK_WIDGET_VISIBLE (scrolled_window->vscrollbar))
|
|
gtk_widget_hide (scrolled_window->vscrollbar);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_scrolled_window_scroll_event (GtkWidget *widget,
|
|
GdkEventScroll *event)
|
|
{
|
|
GtkWidget *range;
|
|
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_DOWN)
|
|
range = GTK_SCROLLED_WINDOW (widget)->vscrollbar;
|
|
else
|
|
range = GTK_SCROLLED_WINDOW (widget)->hscrollbar;
|
|
|
|
if (range && GTK_WIDGET_VISIBLE (range))
|
|
{
|
|
GtkAdjustment *adj = GTK_RANGE (range)->adjustment;
|
|
gdouble delta, new_value;
|
|
|
|
delta = _gtk_range_get_wheel_delta (GTK_RANGE (range), event->direction);
|
|
|
|
new_value = CLAMP (adj->value + delta, adj->lower, adj->upper - adj->page_size);
|
|
|
|
gtk_adjustment_set_value (adj, new_value);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_scrolled_window_focus (GtkWidget *widget,
|
|
GtkDirectionType direction)
|
|
{
|
|
GtkScrolledWindow *scrolled_window = GTK_SCROLLED_WINDOW (widget);
|
|
gboolean had_focus_child = GTK_CONTAINER (widget)->focus_child != NULL;
|
|
|
|
if (scrolled_window->focus_out)
|
|
{
|
|
scrolled_window->focus_out = FALSE; /* Clear this to catch the wrap-around case */
|
|
return FALSE;
|
|
}
|
|
|
|
if (gtk_widget_is_focus (widget))
|
|
return FALSE;
|
|
|
|
/* We only put the scrolled window itself in the focus chain if it
|
|
* isn't possible to focus any children.
|
|
*/
|
|
if (GTK_BIN (widget)->child)
|
|
{
|
|
if (gtk_widget_child_focus (GTK_BIN (widget)->child, direction))
|
|
return TRUE;
|
|
}
|
|
|
|
if (!had_focus_child && GTK_WIDGET_CAN_FOCUS (widget))
|
|
{
|
|
gtk_widget_grab_focus (widget);
|
|
return TRUE;
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_adjustment_changed (GtkAdjustment *adjustment,
|
|
gpointer data)
|
|
{
|
|
GtkScrolledWindow *scrolled_win;
|
|
|
|
g_return_if_fail (adjustment != NULL);
|
|
g_return_if_fail (data != NULL);
|
|
|
|
scrolled_win = GTK_SCROLLED_WINDOW (data);
|
|
|
|
if (scrolled_win->hscrollbar &&
|
|
adjustment == gtk_range_get_adjustment (GTK_RANGE (scrolled_win->hscrollbar)))
|
|
{
|
|
if (scrolled_win->hscrollbar_policy == GTK_POLICY_AUTOMATIC)
|
|
{
|
|
gboolean visible;
|
|
|
|
visible = scrolled_win->hscrollbar_visible;
|
|
scrolled_win->hscrollbar_visible = (adjustment->upper - adjustment->lower >
|
|
adjustment->page_size);
|
|
if (scrolled_win->hscrollbar_visible != visible)
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_win));
|
|
}
|
|
}
|
|
else if (scrolled_win->vscrollbar &&
|
|
adjustment == gtk_range_get_adjustment (GTK_RANGE (scrolled_win->vscrollbar)))
|
|
{
|
|
if (scrolled_win->vscrollbar_policy == GTK_POLICY_AUTOMATIC)
|
|
{
|
|
gboolean visible;
|
|
|
|
visible = scrolled_win->vscrollbar_visible;
|
|
scrolled_win->vscrollbar_visible = (adjustment->upper - adjustment->lower >
|
|
adjustment->page_size);
|
|
if (scrolled_win->vscrollbar_visible != visible)
|
|
gtk_widget_queue_resize (GTK_WIDGET (scrolled_win));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_add (GtkContainer *container,
|
|
GtkWidget *child)
|
|
{
|
|
GtkScrolledWindow *scrolled_window;
|
|
GtkBin *bin;
|
|
|
|
bin = GTK_BIN (container);
|
|
g_return_if_fail (bin->child == NULL);
|
|
|
|
scrolled_window = GTK_SCROLLED_WINDOW (container);
|
|
|
|
bin->child = child;
|
|
gtk_widget_set_parent (child, GTK_WIDGET (bin));
|
|
|
|
/* this is a temporary message */
|
|
if (!gtk_widget_set_scroll_adjustments (child,
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->hscrollbar)),
|
|
gtk_range_get_adjustment (GTK_RANGE (scrolled_window->vscrollbar))))
|
|
g_warning ("gtk_scrolled_window_add(): cannot add non scrollable widget "
|
|
"use gtk_scrolled_window_add_with_viewport() instead");
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_remove (GtkContainer *container,
|
|
GtkWidget *child)
|
|
{
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (container));
|
|
g_return_if_fail (child != NULL);
|
|
g_return_if_fail (GTK_BIN (container)->child == child);
|
|
|
|
gtk_widget_set_scroll_adjustments (child, NULL, NULL);
|
|
|
|
/* chain parent class handler to remove child */
|
|
GTK_CONTAINER_CLASS (gtk_scrolled_window_parent_class)->remove (container, child);
|
|
}
|
|
|
|
/**
|
|
* gtk_scrolled_window_add_with_viewport:
|
|
* @scrolled_window: a #GtkScrolledWindow
|
|
* @child: the widget you want to scroll
|
|
*
|
|
* Used to add children without native scrolling capabilities. This
|
|
* is simply a convenience function; it is equivalent to adding the
|
|
* unscrollable child to a viewport, then adding the viewport to the
|
|
* scrolled window. If a child has native scrolling, use
|
|
* gtk_container_add() instead of this function.
|
|
*
|
|
* The viewport scrolls the child by moving its #GdkWindow, and takes
|
|
* the size of the child to be the size of its toplevel #GdkWindow.
|
|
* This will be very wrong for most widgets that support native scrolling;
|
|
* for example, if you add a widget such as #GtkTreeView with a viewport,
|
|
* the whole widget will scroll, including the column headings. Thus,
|
|
* widgets with native scrolling support should not be used with the
|
|
* #GtkViewport proxy.
|
|
*
|
|
* A widget supports scrolling natively if the
|
|
* set_scroll_adjustments_signal field in #GtkWidgetClass is non-zero,
|
|
* i.e. has been filled in with a valid signal identifier.
|
|
*/
|
|
void
|
|
gtk_scrolled_window_add_with_viewport (GtkScrolledWindow *scrolled_window,
|
|
GtkWidget *child)
|
|
{
|
|
GtkBin *bin;
|
|
GtkWidget *viewport;
|
|
|
|
g_return_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window));
|
|
g_return_if_fail (GTK_IS_WIDGET (child));
|
|
g_return_if_fail (child->parent == NULL);
|
|
|
|
bin = GTK_BIN (scrolled_window);
|
|
|
|
if (bin->child != NULL)
|
|
{
|
|
g_return_if_fail (GTK_IS_VIEWPORT (bin->child));
|
|
g_return_if_fail (GTK_BIN (bin->child)->child == NULL);
|
|
|
|
viewport = bin->child;
|
|
}
|
|
else
|
|
{
|
|
viewport =
|
|
gtk_viewport_new (gtk_scrolled_window_get_hadjustment (scrolled_window),
|
|
gtk_scrolled_window_get_vadjustment (scrolled_window));
|
|
gtk_container_add (GTK_CONTAINER (scrolled_window), viewport);
|
|
}
|
|
|
|
gtk_widget_show (viewport);
|
|
gtk_container_add (GTK_CONTAINER (viewport), child);
|
|
}
|
|
|
|
/*
|
|
* _gtk_scrolled_window_get_spacing:
|
|
* @scrolled_window: a scrolled window
|
|
*
|
|
* Gets the spacing between the scrolled window's scrollbars and
|
|
* the scrolled widget. Used by GtkCombo
|
|
*
|
|
* Return value: the spacing, in pixels.
|
|
*/
|
|
gint
|
|
_gtk_scrolled_window_get_scrollbar_spacing (GtkScrolledWindow *scrolled_window)
|
|
{
|
|
GtkScrolledWindowClass *class;
|
|
|
|
g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (scrolled_window), 0);
|
|
|
|
class = GTK_SCROLLED_WINDOW_GET_CLASS (scrolled_window);
|
|
|
|
if (class->scrollbar_spacing >= 0)
|
|
return class->scrollbar_spacing;
|
|
else
|
|
{
|
|
gint scrollbar_spacing;
|
|
|
|
gtk_widget_style_get (GTK_WIDGET (scrolled_window),
|
|
"scrollbar-spacing", &scrollbar_spacing,
|
|
NULL);
|
|
|
|
return scrollbar_spacing;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_extended_layout_get_desired_size (GtkExtendedLayout *layout,
|
|
GtkRequisition *minimal_size,
|
|
GtkRequisition *natural_size)
|
|
{
|
|
GtkRequisition min_req, nat_req;
|
|
|
|
gtk_scrolled_window_real_size_request (GTK_WIDGET (layout), &min_req, &nat_req);
|
|
|
|
if (minimal_size)
|
|
*minimal_size = min_req;
|
|
|
|
if (natural_size)
|
|
*natural_size = nat_req;
|
|
}
|
|
|
|
static void
|
|
gtk_scrolled_window_extended_layout_init (GtkExtendedLayoutIface *iface)
|
|
{
|
|
iface->get_desired_size = gtk_scrolled_window_extended_layout_get_desired_size;
|
|
}
|
|
|
|
#define __GTK_SCROLLED_WINDOW_C__
|
|
#include "gtkaliasdef.c"
|