356f1f59ae
It is permissable to remove a widget using gtk_container_remove from the gtk_container_foreach callback handler. Document this fact to make it more discoverable. Fixes #1461
3895 lines
124 KiB
C
3895 lines
124 KiB
C
/* GTK - The GIMP Toolkit
|
||
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
||
*
|
||
* This library is free software; you can redistribute it and/or
|
||
* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
|
||
* version 2 of the License, or (at your option) any later version.
|
||
*
|
||
* This library is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser General Public
|
||
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
/*
|
||
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
||
* file for a list of people on the GTK+ Team. See the ChangeLog
|
||
* files for a list of changes. These files are distributed with
|
||
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
||
*/
|
||
|
||
#include "config.h"
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||
|
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#include "gtkcontainer.h"
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||
#include "gtkcontainerprivate.h"
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||
|
||
#include <stdarg.h>
|
||
#include <string.h>
|
||
#include <stdlib.h>
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||
|
||
#include <gobject/gobjectnotifyqueue.c>
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||
#include <gobject/gvaluecollector.h>
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||
|
||
#include "gtkadjustment.h"
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||
#include "gtkbuildable.h"
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||
#include "gtkbuilderprivate.h"
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||
#include "gtktypebuiltins.h"
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||
#include "gtkprivate.h"
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||
#include "gtkmain.h"
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||
#include "gtkmarshalers.h"
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||
#include "gtksizerequest.h"
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||
#include "gtksizerequestcacheprivate.h"
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||
#include "gtkwidgetprivate.h"
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||
#include "gtkwindow.h"
|
||
#include "gtkassistant.h"
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||
#include "gtkintl.h"
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||
#include "gtkstylecontextprivate.h"
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||
#include "gtkwidgetpath.h"
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||
#include "a11y/gtkcontaineraccessible.h"
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||
#include "a11y/gtkcontaineraccessibleprivate.h"
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||
#include "gtkpopovermenu.h"
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||
#include "gtkshortcutswindow.h"
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||
|
||
/* A handful of containers inside GTK+ are cheating and widgets
|
||
* inside internal structure as direct children for the purpose
|
||
* of forall().
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||
*/
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||
#define SPECIAL_CONTAINER(x) (GTK_IS_ASSISTANT (x) || \
|
||
GTK_IS_ACTION_BAR (x) || \
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GTK_IS_POPOVER_MENU (x) || \
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||
GTK_IS_SHORTCUTS_SECTION (x) || \
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||
GTK_IS_SHORTCUTS_WINDOW (x))
|
||
|
||
/**
|
||
* SECTION:gtkcontainer
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||
* @Short_description: Base class for widgets which contain other widgets
|
||
* @Title: GtkContainer
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||
*
|
||
* A GTK+ user interface is constructed by nesting widgets inside widgets.
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||
* Container widgets are the inner nodes in the resulting tree of widgets:
|
||
* they contain other widgets. So, for example, you might have a #GtkWindow
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||
* containing a #GtkFrame containing a #GtkLabel. If you wanted an image instead
|
||
* of a textual label inside the frame, you might replace the #GtkLabel widget
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||
* with a #GtkImage widget.
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||
*
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||
* There are two major kinds of container widgets in GTK+. Both are subclasses
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* of the abstract GtkContainer base class.
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||
*
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||
* The first type of container widget has a single child widget and derives
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||
* from #GtkBin. These containers are decorators, which
|
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* add some kind of functionality to the child. For example, a #GtkButton makes
|
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* its child into a clickable button; a #GtkFrame draws a frame around its child
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* and a #GtkWindow places its child widget inside a top-level window.
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*
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||
* The second type of container can have more than one child; its purpose is to
|
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* manage layout. This means that these containers assign
|
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* sizes and positions to their children. For example, a #GtkHBox arranges its
|
||
* children in a horizontal row, and a #GtkGrid arranges the widgets it contains
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||
* in a two-dimensional grid.
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||
*
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||
* For implementations of #GtkContainer the virtual method #GtkContainerClass.forall()
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* is always required, since it's used for drawing and other internal operations
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* on the children.
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||
* If the #GtkContainer implementation expect to have non internal children
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* it's needed to implement both #GtkContainerClass.add() and #GtkContainerClass.remove().
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* If the GtkContainer implementation has internal children, they should be added
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* with gtk_widget_set_parent() on init() and removed with gtk_widget_unparent()
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||
* in the #GtkWidgetClass.destroy() implementation.
|
||
* See more about implementing custom widgets at https://wiki.gnome.org/HowDoI/CustomWidgets
|
||
*
|
||
* # Height for width geometry management
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||
*
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||
* GTK+ uses a height-for-width (and width-for-height) geometry management system.
|
||
* Height-for-width means that a widget can change how much vertical space it needs,
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* depending on the amount of horizontal space that it is given (and similar for
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* width-for-height).
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||
*
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||
* There are some things to keep in mind when implementing container widgets
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||
* that make use of GTK+’s height for width geometry management system. First,
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* it’s important to note that a container must prioritize one of its
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||
* dimensions, that is to say that a widget or container can only have a
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||
* #GtkSizeRequestMode that is %GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH or
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||
* %GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT. However, every widget and container
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||
* must be able to respond to the APIs for both dimensions, i.e. even if a
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* widget has a request mode that is height-for-width, it is possible that
|
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* its parent will request its sizes using the width-for-height APIs.
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*
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||
* To ensure that everything works properly, here are some guidelines to follow
|
||
* when implementing height-for-width (or width-for-height) containers.
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*
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||
* Each request mode involves 2 virtual methods. Height-for-width apis run
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* through gtk_widget_get_preferred_width() and then through gtk_widget_get_preferred_height_for_width().
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* When handling requests in the opposite #GtkSizeRequestMode it is important that
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* every widget request at least enough space to display all of its content at all times.
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*
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||
* When gtk_widget_get_preferred_height() is called on a container that is height-for-width,
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||
* the container must return the height for its minimum width. This is easily achieved by
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* simply calling the reverse apis implemented for itself as follows:
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*
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||
* |[<!-- language="C" -->
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||
* static void
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* foo_container_get_preferred_height (GtkWidget *widget,
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||
* gint *min_height,
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||
* gint *nat_height)
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* {
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||
* if (i_am_in_height_for_width_mode)
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||
* {
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||
* gint min_width;
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||
*
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||
* GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget,
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||
* &min_width,
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||
* NULL);
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||
* GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width
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* (widget,
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* min_width,
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||
* min_height,
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||
* nat_height);
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||
* }
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||
* else
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||
* {
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||
* ... many containers support both request modes, execute the
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||
* real width-for-height request here by returning the
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* collective heights of all widgets that are stacked
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* vertically (or whatever is appropriate for this container)
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||
* ...
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||
* }
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||
* }
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||
* ]|
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||
*
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||
* Similarly, when gtk_widget_get_preferred_width_for_height() is called for a container or widget
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* that is height-for-width, it then only needs to return the base minimum width like so:
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||
*
|
||
* |[<!-- language="C" -->
|
||
* static void
|
||
* foo_container_get_preferred_width_for_height (GtkWidget *widget,
|
||
* gint for_height,
|
||
* gint *min_width,
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* gint *nat_width)
|
||
* {
|
||
* if (i_am_in_height_for_width_mode)
|
||
* {
|
||
* GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget,
|
||
* min_width,
|
||
* nat_width);
|
||
* }
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||
* else
|
||
* {
|
||
* ... execute the real width-for-height request here based on
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* the required width of the children collectively if the
|
||
* container were to be allocated the said height ...
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||
* }
|
||
* }
|
||
* ]|
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||
*
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||
* Height for width requests are generally implemented in terms of a virtual allocation
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||
* of widgets in the input orientation. Assuming an height-for-width request mode, a container
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* would implement the get_preferred_height_for_width() virtual function by first calling
|
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* gtk_widget_get_preferred_width() for each of its children.
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*
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||
* For each potential group of children that are lined up horizontally, the values returned by
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||
* gtk_widget_get_preferred_width() should be collected in an array of #GtkRequestedSize structures.
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* Any child spacing should be removed from the input @for_width and then the collective size should be
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* allocated using the gtk_distribute_natural_allocation() convenience function.
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*
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* The container will then move on to request the preferred height for each child by using
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* gtk_widget_get_preferred_height_for_width() and using the sizes stored in the #GtkRequestedSize array.
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*
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* To allocate a height-for-width container, it’s again important
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* to consider that a container must prioritize one dimension over the other. So if
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* a container is a height-for-width container it must first allocate all widgets horizontally
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* using a #GtkRequestedSize array and gtk_distribute_natural_allocation() and then add any
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||
* extra space (if and where appropriate) for the widget to expand.
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||
*
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* After adding all the expand space, the container assumes it was allocated sufficient
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* height to fit all of its content. At this time, the container must use the total horizontal sizes
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* of each widget to request the height-for-width of each of its children and store the requests in a
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* #GtkRequestedSize array for any widgets that stack vertically (for tabular containers this can
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||
* be generalized into the heights and widths of rows and columns).
|
||
* The vertical space must then again be distributed using gtk_distribute_natural_allocation()
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||
* while this time considering the allocated height of the widget minus any vertical spacing
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* that the container adds. Then vertical expand space should be added where appropriate and available
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* and the container should go on to actually allocating the child widgets.
|
||
*
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||
* See [GtkWidget’s geometry management section][geometry-management]
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||
* to learn more about implementing height-for-width geometry management for widgets.
|
||
*
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||
* # Child properties
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||
*
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||
* GtkContainer introduces child properties.
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||
* These are object properties that are not specific
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||
* to either the container or the contained widget, but rather to their relation.
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||
* Typical examples of child properties are the position or pack-type of a widget
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||
* which is contained in a #GtkBox.
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||
*
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||
* Use gtk_container_class_install_child_property() to install child properties
|
||
* for a container class and gtk_container_class_find_child_property() or
|
||
* gtk_container_class_list_child_properties() to get information about existing
|
||
* child properties.
|
||
*
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||
* To set the value of a child property, use gtk_container_child_set_property(),
|
||
* gtk_container_child_set() or gtk_container_child_set_valist().
|
||
* To obtain the value of a child property, use
|
||
* gtk_container_child_get_property(), gtk_container_child_get() or
|
||
* gtk_container_child_get_valist(). To emit notification about child property
|
||
* changes, use gtk_widget_child_notify().
|
||
*
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||
* # GtkContainer as GtkBuildable
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||
*
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||
* The GtkContainer implementation of the GtkBuildable interface supports
|
||
* a <packing> element for children, which can contain multiple <property>
|
||
* elements that specify child properties for the child.
|
||
*
|
||
* Since 2.16, child properties can also be marked as translatable using
|
||
* the same “translatable”, “comments” and “context” attributes that are used
|
||
* for regular properties.
|
||
*
|
||
* Since 3.16, containers can have a <focus-chain> element containing multiple
|
||
* <widget> elements, one for each child that should be added to the focus
|
||
* chain. The ”name” attribute gives the id of the widget.
|
||
*
|
||
* An example of these properties in UI definitions:
|
||
* |[
|
||
* <object class="GtkBox">
|
||
* <child>
|
||
* <object class="GtkEntry" id="entry1"/>
|
||
* <packing>
|
||
* <property name="pack-type">start</property>
|
||
* </packing>
|
||
* </child>
|
||
* <child>
|
||
* <object class="GtkEntry" id="entry2"/>
|
||
* </child>
|
||
* <focus-chain>
|
||
* <widget name="entry1"/>
|
||
* <widget name="entry2"/>
|
||
* </focus-chain>
|
||
* </object>
|
||
* ]|
|
||
*
|
||
*/
|
||
|
||
|
||
struct _GtkContainerPrivate
|
||
{
|
||
GtkWidget *focus_child;
|
||
|
||
GdkFrameClock *resize_clock;
|
||
guint resize_handler;
|
||
|
||
guint border_width : 16;
|
||
guint border_width_set : 1;
|
||
|
||
guint has_focus_chain : 1;
|
||
guint reallocate_redraws : 1;
|
||
guint restyle_pending : 1;
|
||
guint resize_mode : 2;
|
||
guint resize_mode_set : 1;
|
||
guint request_mode : 2;
|
||
};
|
||
|
||
enum {
|
||
ADD,
|
||
REMOVE,
|
||
CHECK_RESIZE,
|
||
SET_FOCUS_CHILD,
|
||
LAST_SIGNAL
|
||
};
|
||
|
||
enum {
|
||
PROP_0,
|
||
PROP_BORDER_WIDTH,
|
||
PROP_RESIZE_MODE,
|
||
PROP_CHILD,
|
||
LAST_PROP
|
||
};
|
||
|
||
static GParamSpec *container_props[LAST_PROP];
|
||
|
||
#define PARAM_SPEC_PARAM_ID(pspec) ((pspec)->param_id)
|
||
#define PARAM_SPEC_SET_PARAM_ID(pspec, id) ((pspec)->param_id = (id))
|
||
|
||
|
||
/* --- prototypes --- */
|
||
static void gtk_container_base_class_init (GtkContainerClass *klass);
|
||
static void gtk_container_base_class_finalize (GtkContainerClass *klass);
|
||
static void gtk_container_class_init (GtkContainerClass *klass);
|
||
static void gtk_container_init (GtkContainer *container);
|
||
static void gtk_container_destroy (GtkWidget *widget);
|
||
static void gtk_container_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gtk_container_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec);
|
||
static void gtk_container_add_unimplemented (GtkContainer *container,
|
||
GtkWidget *widget);
|
||
static void gtk_container_remove_unimplemented (GtkContainer *container,
|
||
GtkWidget *widget);
|
||
static void gtk_container_real_check_resize (GtkContainer *container);
|
||
static void gtk_container_compute_expand (GtkWidget *widget,
|
||
gboolean *hexpand_p,
|
||
gboolean *vexpand_p);
|
||
static gboolean gtk_container_focus (GtkWidget *widget,
|
||
GtkDirectionType direction);
|
||
static void gtk_container_real_set_focus_child (GtkContainer *container,
|
||
GtkWidget *widget);
|
||
|
||
static gboolean gtk_container_focus_move (GtkContainer *container,
|
||
GList *children,
|
||
GtkDirectionType direction);
|
||
static void gtk_container_children_callback (GtkWidget *widget,
|
||
gpointer client_data);
|
||
static void gtk_container_show_all (GtkWidget *widget);
|
||
static gint gtk_container_draw (GtkWidget *widget,
|
||
cairo_t *cr);
|
||
static void gtk_container_map (GtkWidget *widget);
|
||
static void gtk_container_unmap (GtkWidget *widget);
|
||
static void gtk_container_adjust_size_request (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
gint *minimum_size,
|
||
gint *natural_size);
|
||
static void gtk_container_adjust_baseline_request (GtkWidget *widget,
|
||
gint *minimum_baseline,
|
||
gint *natural_baseline);
|
||
static void gtk_container_adjust_size_allocation (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
gint *minimum_size,
|
||
gint *natural_size,
|
||
gint *allocated_pos,
|
||
gint *allocated_size);
|
||
static void gtk_container_adjust_baseline_allocation (GtkWidget *widget,
|
||
gint *baseline);
|
||
static GtkSizeRequestMode gtk_container_get_request_mode (GtkWidget *widget);
|
||
|
||
static gchar* gtk_container_child_default_composite_name (GtkContainer *container,
|
||
GtkWidget *child);
|
||
|
||
static GtkWidgetPath * gtk_container_real_get_path_for_child (GtkContainer *container,
|
||
GtkWidget *child);
|
||
|
||
/* GtkBuildable */
|
||
static void gtk_container_buildable_init (GtkBuildableIface *iface);
|
||
static void gtk_container_buildable_add_child (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *type);
|
||
static gboolean gtk_container_buildable_custom_tag_start (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
GMarkupParser *parser,
|
||
gpointer *data);
|
||
static void gtk_container_buildable_custom_tag_end (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer *data);
|
||
static void gtk_container_buildable_custom_finished (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer data);
|
||
|
||
static gboolean gtk_container_should_propagate_draw (GtkContainer *container,
|
||
GtkWidget *child,
|
||
cairo_t *cr);
|
||
|
||
/* --- variables --- */
|
||
static GQuark vadjustment_key_id;
|
||
static GQuark hadjustment_key_id;
|
||
static GQuark quark_focus_chain;
|
||
static guint container_signals[LAST_SIGNAL] = { 0 };
|
||
static gint GtkContainer_private_offset;
|
||
static GtkWidgetClass *parent_class = NULL;
|
||
extern GParamSpecPool *_gtk_widget_child_property_pool;
|
||
extern GObjectNotifyContext *_gtk_widget_child_property_notify_context;
|
||
static GtkBuildableIface *parent_buildable_iface;
|
||
|
||
|
||
/* --- functions --- */
|
||
static inline gpointer
|
||
gtk_container_get_instance_private (GtkContainer *self)
|
||
{
|
||
return G_STRUCT_MEMBER_P (self, GtkContainer_private_offset);
|
||
}
|
||
|
||
GType
|
||
gtk_container_get_type (void)
|
||
{
|
||
static GType container_type = 0;
|
||
|
||
if (!container_type)
|
||
{
|
||
const GTypeInfo container_info =
|
||
{
|
||
sizeof (GtkContainerClass),
|
||
(GBaseInitFunc) gtk_container_base_class_init,
|
||
(GBaseFinalizeFunc) gtk_container_base_class_finalize,
|
||
(GClassInitFunc) gtk_container_class_init,
|
||
NULL /* class_finalize */,
|
||
NULL /* class_data */,
|
||
sizeof (GtkContainer),
|
||
0 /* n_preallocs */,
|
||
(GInstanceInitFunc) gtk_container_init,
|
||
NULL, /* value_table */
|
||
};
|
||
|
||
const GInterfaceInfo buildable_info =
|
||
{
|
||
(GInterfaceInitFunc) gtk_container_buildable_init,
|
||
NULL,
|
||
NULL
|
||
};
|
||
|
||
container_type =
|
||
g_type_register_static (GTK_TYPE_WIDGET, I_("GtkContainer"),
|
||
&container_info, G_TYPE_FLAG_ABSTRACT);
|
||
|
||
GtkContainer_private_offset =
|
||
g_type_add_instance_private (container_type, sizeof (GtkContainerPrivate));
|
||
|
||
g_type_add_interface_static (container_type,
|
||
GTK_TYPE_BUILDABLE,
|
||
&buildable_info);
|
||
|
||
}
|
||
|
||
return container_type;
|
||
}
|
||
|
||
static void
|
||
gtk_container_base_class_init (GtkContainerClass *class)
|
||
{
|
||
/* reset instance specifc class fields that don't get inherited */
|
||
class->set_child_property = NULL;
|
||
class->get_child_property = NULL;
|
||
}
|
||
|
||
static void
|
||
gtk_container_base_class_finalize (GtkContainerClass *class)
|
||
{
|
||
GList *list, *node;
|
||
|
||
list = g_param_spec_pool_list_owned (_gtk_widget_child_property_pool, G_OBJECT_CLASS_TYPE (class));
|
||
for (node = list; node; node = node->next)
|
||
{
|
||
GParamSpec *pspec = node->data;
|
||
|
||
g_param_spec_pool_remove (_gtk_widget_child_property_pool, pspec);
|
||
PARAM_SPEC_SET_PARAM_ID (pspec, 0);
|
||
g_param_spec_unref (pspec);
|
||
}
|
||
g_list_free (list);
|
||
}
|
||
|
||
static void
|
||
gtk_container_class_init (GtkContainerClass *class)
|
||
{
|
||
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
|
||
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
|
||
|
||
parent_class = g_type_class_peek_parent (class);
|
||
|
||
vadjustment_key_id = g_quark_from_static_string ("gtk-vadjustment");
|
||
hadjustment_key_id = g_quark_from_static_string ("gtk-hadjustment");
|
||
quark_focus_chain = g_quark_from_static_string ("gtk-container-focus-chain");
|
||
|
||
gobject_class->set_property = gtk_container_set_property;
|
||
gobject_class->get_property = gtk_container_get_property;
|
||
|
||
widget_class->destroy = gtk_container_destroy;
|
||
widget_class->compute_expand = gtk_container_compute_expand;
|
||
widget_class->show_all = gtk_container_show_all;
|
||
widget_class->draw = gtk_container_draw;
|
||
widget_class->map = gtk_container_map;
|
||
widget_class->unmap = gtk_container_unmap;
|
||
widget_class->focus = gtk_container_focus;
|
||
|
||
widget_class->adjust_size_request = gtk_container_adjust_size_request;
|
||
widget_class->adjust_baseline_request = gtk_container_adjust_baseline_request;
|
||
widget_class->adjust_size_allocation = gtk_container_adjust_size_allocation;
|
||
widget_class->adjust_baseline_allocation = gtk_container_adjust_baseline_allocation;
|
||
widget_class->get_request_mode = gtk_container_get_request_mode;
|
||
|
||
class->add = gtk_container_add_unimplemented;
|
||
class->remove = gtk_container_remove_unimplemented;
|
||
class->check_resize = gtk_container_real_check_resize;
|
||
class->forall = NULL;
|
||
class->set_focus_child = gtk_container_real_set_focus_child;
|
||
class->child_type = NULL;
|
||
class->composite_name = gtk_container_child_default_composite_name;
|
||
class->get_path_for_child = gtk_container_real_get_path_for_child;
|
||
|
||
container_props[PROP_RESIZE_MODE] =
|
||
g_param_spec_enum ("resize-mode",
|
||
P_("Resize mode"),
|
||
P_("Specify how resize events are handled"),
|
||
GTK_TYPE_RESIZE_MODE,
|
||
GTK_RESIZE_PARENT,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY|G_PARAM_DEPRECATED);
|
||
|
||
container_props[PROP_BORDER_WIDTH] =
|
||
g_param_spec_uint ("border-width",
|
||
P_("Border width"),
|
||
P_("The width of the empty border outside the containers children"),
|
||
0, 65535,
|
||
0,
|
||
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
|
||
|
||
container_props[PROP_CHILD] =
|
||
g_param_spec_object ("child",
|
||
P_("Child"),
|
||
P_("Can be used to add a new child to the container"),
|
||
GTK_TYPE_WIDGET,
|
||
GTK_PARAM_WRITABLE|G_PARAM_DEPRECATED);
|
||
|
||
g_object_class_install_properties (gobject_class, LAST_PROP, container_props);
|
||
|
||
container_signals[ADD] =
|
||
g_signal_new (I_("add"),
|
||
G_OBJECT_CLASS_TYPE (gobject_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
G_STRUCT_OFFSET (GtkContainerClass, add),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 1,
|
||
GTK_TYPE_WIDGET);
|
||
container_signals[REMOVE] =
|
||
g_signal_new (I_("remove"),
|
||
G_OBJECT_CLASS_TYPE (gobject_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
G_STRUCT_OFFSET (GtkContainerClass, remove),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 1,
|
||
GTK_TYPE_WIDGET);
|
||
container_signals[CHECK_RESIZE] =
|
||
g_signal_new (I_("check-resize"),
|
||
G_OBJECT_CLASS_TYPE (gobject_class),
|
||
G_SIGNAL_RUN_LAST,
|
||
G_STRUCT_OFFSET (GtkContainerClass, check_resize),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 0);
|
||
container_signals[SET_FOCUS_CHILD] =
|
||
g_signal_new (I_("set-focus-child"),
|
||
G_OBJECT_CLASS_TYPE (gobject_class),
|
||
G_SIGNAL_RUN_FIRST,
|
||
G_STRUCT_OFFSET (GtkContainerClass, set_focus_child),
|
||
NULL, NULL,
|
||
NULL,
|
||
G_TYPE_NONE, 1,
|
||
GTK_TYPE_WIDGET);
|
||
|
||
if (GtkContainer_private_offset != 0)
|
||
g_type_class_adjust_private_offset (class, &GtkContainer_private_offset);
|
||
|
||
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_CONTAINER_ACCESSIBLE);
|
||
}
|
||
|
||
static void
|
||
gtk_container_buildable_init (GtkBuildableIface *iface)
|
||
{
|
||
parent_buildable_iface = g_type_interface_peek_parent (iface);
|
||
iface->add_child = gtk_container_buildable_add_child;
|
||
iface->custom_tag_start = gtk_container_buildable_custom_tag_start;
|
||
iface->custom_tag_end = gtk_container_buildable_custom_tag_end;
|
||
iface->custom_finished = gtk_container_buildable_custom_finished;
|
||
}
|
||
|
||
static void
|
||
gtk_container_buildable_add_child (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *type)
|
||
{
|
||
if (type)
|
||
{
|
||
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (buildable, type);
|
||
}
|
||
else if (GTK_IS_WIDGET (child) &&
|
||
_gtk_widget_get_parent (GTK_WIDGET (child)) == NULL)
|
||
{
|
||
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
|
||
}
|
||
else
|
||
g_warning ("Cannot add an object of type %s to a container of type %s",
|
||
g_type_name (G_OBJECT_TYPE (child)), g_type_name (G_OBJECT_TYPE (buildable)));
|
||
}
|
||
|
||
static inline void
|
||
container_set_child_property (GtkContainer *container,
|
||
GtkWidget *child,
|
||
GParamSpec *pspec,
|
||
const GValue *value,
|
||
GObjectNotifyQueue *nqueue)
|
||
{
|
||
GValue tmp_value = G_VALUE_INIT;
|
||
GtkContainerClass *class = g_type_class_peek (pspec->owner_type);
|
||
|
||
/* provide a copy to work from, convert (if necessary) and validate */
|
||
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
||
if (!g_value_transform (value, &tmp_value))
|
||
g_warning ("unable to set child property '%s' of type '%s' from value of type '%s'",
|
||
pspec->name,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
|
||
G_VALUE_TYPE_NAME (value));
|
||
else if (g_param_value_validate (pspec, &tmp_value) && !(pspec->flags & G_PARAM_LAX_VALIDATION))
|
||
{
|
||
gchar *contents = g_strdup_value_contents (value);
|
||
|
||
g_warning ("value \"%s\" of type '%s' is invalid for property '%s' of type '%s'",
|
||
contents,
|
||
G_VALUE_TYPE_NAME (value),
|
||
pspec->name,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
|
||
g_free (contents);
|
||
}
|
||
else
|
||
{
|
||
class->set_child_property (container, child, PARAM_SPEC_PARAM_ID (pspec), &tmp_value, pspec);
|
||
g_object_notify_queue_add (G_OBJECT (child), nqueue, pspec);
|
||
}
|
||
g_value_unset (&tmp_value);
|
||
}
|
||
|
||
static void
|
||
gtk_container_buildable_set_child_property (GtkContainer *container,
|
||
GtkBuilder *builder,
|
||
GtkWidget *child,
|
||
gchar *name,
|
||
const gchar *value)
|
||
{
|
||
GParamSpec *pspec;
|
||
GValue gvalue = G_VALUE_INIT;
|
||
GError *error = NULL;
|
||
GObjectNotifyQueue *nqueue;
|
||
|
||
if (_gtk_widget_get_parent (child) != (GtkWidget *)container &&
|
||
!SPECIAL_CONTAINER (container))
|
||
{
|
||
/* This can happen with internal children of complex widgets.
|
||
* Silently ignore the child properties in this case. We explicitly
|
||
* allow it for GtkAssistant, since that is how it works.
|
||
*/
|
||
return;
|
||
}
|
||
|
||
pspec = gtk_container_class_find_child_property (G_OBJECT_GET_CLASS (container), name);
|
||
if (!pspec)
|
||
{
|
||
g_warning ("%s does not have a child property called %s",
|
||
G_OBJECT_TYPE_NAME (container), name);
|
||
return;
|
||
}
|
||
else if (!(pspec->flags & G_PARAM_WRITABLE))
|
||
{
|
||
g_warning ("Child property '%s' of container class '%s' is not writable",
|
||
name, G_OBJECT_TYPE_NAME (container));
|
||
return;
|
||
}
|
||
|
||
if (!gtk_builder_value_from_string (builder, pspec, value, &gvalue, &error))
|
||
{
|
||
g_warning ("Could not read property %s:%s with value %s of type %s: %s",
|
||
g_type_name (G_OBJECT_TYPE (container)),
|
||
name,
|
||
value,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
|
||
error->message);
|
||
g_error_free (error);
|
||
return;
|
||
}
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (child);
|
||
nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
|
||
container_set_child_property (container, child, pspec, &gvalue, nqueue);
|
||
g_object_notify_queue_thaw (G_OBJECT (child), nqueue);
|
||
g_object_unref (container);
|
||
g_object_unref (child);
|
||
g_value_unset (&gvalue);
|
||
}
|
||
|
||
typedef struct {
|
||
GtkBuilder *builder;
|
||
GtkContainer *container;
|
||
GtkWidget *child;
|
||
GString *string;
|
||
gchar *child_prop_name;
|
||
gchar *context;
|
||
gboolean translatable;
|
||
} PackingData;
|
||
|
||
static void
|
||
packing_start_element (GMarkupParseContext *context,
|
||
const gchar *element_name,
|
||
const gchar **names,
|
||
const gchar **values,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
PackingData *data = (PackingData*)user_data;
|
||
|
||
if (strcmp (element_name, "property") == 0)
|
||
{
|
||
const gchar *name;
|
||
gboolean translatable = FALSE;
|
||
const gchar *ctx = NULL;
|
||
|
||
if (!_gtk_builder_check_parent (data->builder, context, "packing", error))
|
||
return;
|
||
|
||
if (!g_markup_collect_attributes (element_name, names, values, error,
|
||
G_MARKUP_COLLECT_STRING, "name", &name,
|
||
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable", &translatable,
|
||
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments", NULL,
|
||
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context", &ctx,
|
||
G_MARKUP_COLLECT_INVALID))
|
||
{
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
return;
|
||
}
|
||
|
||
data->child_prop_name = g_strdup (name);
|
||
data->translatable = translatable;
|
||
data->context = g_strdup (ctx);
|
||
}
|
||
else if (strcmp (element_name, "packing") == 0)
|
||
{
|
||
if (!_gtk_builder_check_parent (data->builder, context, "child", error))
|
||
return;
|
||
|
||
if (!g_markup_collect_attributes (element_name, names, values, error,
|
||
G_MARKUP_COLLECT_INVALID, NULL, NULL,
|
||
G_MARKUP_COLLECT_INVALID))
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
}
|
||
else
|
||
{
|
||
_gtk_builder_error_unhandled_tag (data->builder, context,
|
||
"GtkContainer", element_name,
|
||
error);
|
||
}
|
||
}
|
||
|
||
static void
|
||
packing_text_element (GMarkupParseContext *context,
|
||
const gchar *text,
|
||
gsize text_len,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
PackingData *data = (PackingData*)user_data;
|
||
|
||
if (data->child_prop_name)
|
||
g_string_append_len (data->string, text, text_len);
|
||
}
|
||
|
||
static void
|
||
packing_end_element (GMarkupParseContext *context,
|
||
const gchar *element_name,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
PackingData *data = (PackingData*)user_data;
|
||
|
||
/* translate the string */
|
||
if (data->string->len && data->translatable)
|
||
{
|
||
const gchar *translated;
|
||
const gchar *domain;
|
||
|
||
domain = gtk_builder_get_translation_domain (data->builder);
|
||
|
||
translated = _gtk_builder_parser_translate (domain,
|
||
data->context,
|
||
data->string->str);
|
||
g_string_assign (data->string, translated);
|
||
}
|
||
|
||
if (data->child_prop_name)
|
||
gtk_container_buildable_set_child_property (data->container,
|
||
data->builder,
|
||
data->child,
|
||
data->child_prop_name,
|
||
data->string->str);
|
||
|
||
g_string_set_size (data->string, 0);
|
||
g_clear_pointer (&data->child_prop_name, g_free);
|
||
g_clear_pointer (&data->context, g_free);
|
||
data->translatable = FALSE;
|
||
}
|
||
|
||
static const GMarkupParser packing_parser =
|
||
{
|
||
packing_start_element,
|
||
packing_end_element,
|
||
packing_text_element,
|
||
};
|
||
|
||
typedef struct
|
||
{
|
||
gchar *name;
|
||
gint line;
|
||
gint col;
|
||
} FocusChainWidget;
|
||
|
||
static void
|
||
focus_chain_widget_free (gpointer data)
|
||
{
|
||
FocusChainWidget *fcw = data;
|
||
|
||
g_free (fcw->name);
|
||
g_free (fcw);
|
||
}
|
||
|
||
typedef struct
|
||
{
|
||
GSList *items;
|
||
GObject *object;
|
||
GtkBuilder *builder;
|
||
gint line;
|
||
gint col;
|
||
} FocusChainData;
|
||
|
||
static void
|
||
focus_chain_start_element (GMarkupParseContext *context,
|
||
const gchar *element_name,
|
||
const gchar **names,
|
||
const gchar **values,
|
||
gpointer user_data,
|
||
GError **error)
|
||
{
|
||
FocusChainData *data = (FocusChainData*)user_data;
|
||
|
||
if (strcmp (element_name, "widget") == 0)
|
||
{
|
||
const gchar *name;
|
||
FocusChainWidget *fcw;
|
||
|
||
if (!_gtk_builder_check_parent (data->builder, context, "focus-chain", error))
|
||
return;
|
||
|
||
if (!g_markup_collect_attributes (element_name, names, values, error,
|
||
G_MARKUP_COLLECT_STRING, "name", &name,
|
||
G_MARKUP_COLLECT_INVALID))
|
||
{
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
return;
|
||
}
|
||
|
||
fcw = g_new (FocusChainWidget, 1);
|
||
fcw->name = g_strdup (name);
|
||
g_markup_parse_context_get_position (context, &fcw->line, &fcw->col);
|
||
data->items = g_slist_prepend (data->items, fcw);
|
||
}
|
||
else if (strcmp (element_name, "focus-chain") == 0)
|
||
{
|
||
if (!_gtk_builder_check_parent (data->builder, context, "object", error))
|
||
return;
|
||
|
||
if (!g_markup_collect_attributes (element_name, names, values, error,
|
||
G_MARKUP_COLLECT_INVALID, "", NULL,
|
||
G_MARKUP_COLLECT_INVALID))
|
||
_gtk_builder_prefix_error (data->builder, context, error);
|
||
}
|
||
else
|
||
{
|
||
_gtk_builder_error_unhandled_tag (data->builder, context,
|
||
"GtkContainer", element_name,
|
||
error);
|
||
}
|
||
}
|
||
|
||
static const GMarkupParser focus_chain_parser =
|
||
{
|
||
focus_chain_start_element
|
||
};
|
||
|
||
static gboolean
|
||
gtk_container_buildable_custom_tag_start (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
GMarkupParser *parser,
|
||
gpointer *parser_data)
|
||
{
|
||
if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
|
||
tagname, parser, parser_data))
|
||
return TRUE;
|
||
|
||
if (child && strcmp (tagname, "packing") == 0)
|
||
{
|
||
PackingData *data;
|
||
|
||
data = g_slice_new0 (PackingData);
|
||
data->string = g_string_new ("");
|
||
data->builder = builder;
|
||
data->container = GTK_CONTAINER (buildable);
|
||
data->child = GTK_WIDGET (child);
|
||
data->child_prop_name = NULL;
|
||
|
||
*parser = packing_parser;
|
||
*parser_data = data;
|
||
|
||
return TRUE;
|
||
}
|
||
else if (!child && strcmp (tagname, "focus-chain") == 0)
|
||
{
|
||
FocusChainData *data;
|
||
|
||
data = g_slice_new0 (FocusChainData);
|
||
data->items = NULL;
|
||
data->object = G_OBJECT (buildable);
|
||
data->builder = builder;
|
||
|
||
*parser = focus_chain_parser;
|
||
*parser_data = data;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_container_buildable_custom_tag_end (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer *parser_data)
|
||
{
|
||
if (strcmp (tagname, "packing") == 0)
|
||
{
|
||
PackingData *data = (PackingData*)parser_data;
|
||
|
||
g_string_free (data->string, TRUE);
|
||
g_slice_free (PackingData, data);
|
||
|
||
return;
|
||
}
|
||
|
||
if (parent_buildable_iface->custom_tag_end)
|
||
parent_buildable_iface->custom_tag_end (buildable, builder,
|
||
child, tagname, parser_data);
|
||
}
|
||
|
||
static void
|
||
gtk_container_buildable_custom_finished (GtkBuildable *buildable,
|
||
GtkBuilder *builder,
|
||
GObject *child,
|
||
const gchar *tagname,
|
||
gpointer parser_data)
|
||
{
|
||
if (strcmp (tagname, "focus-chain") == 0)
|
||
{
|
||
FocusChainData *data = (FocusChainData*)parser_data;
|
||
FocusChainWidget *fcw;
|
||
GSList *l;
|
||
GList *chain;
|
||
GObject *object;
|
||
|
||
chain = NULL;
|
||
for (l = data->items; l; l = l->next)
|
||
{
|
||
fcw = l->data;
|
||
object = _gtk_builder_lookup_object (builder, fcw->name, fcw->line, fcw->col);
|
||
if (!object)
|
||
continue;
|
||
chain = g_list_prepend (chain, object);
|
||
}
|
||
|
||
gtk_container_set_focus_chain (GTK_CONTAINER (data->object), chain);
|
||
g_list_free (chain);
|
||
|
||
g_slist_free_full (data->items, focus_chain_widget_free);
|
||
g_slice_free (FocusChainData, data);
|
||
|
||
return;
|
||
}
|
||
|
||
if (parent_buildable_iface->custom_finished)
|
||
parent_buildable_iface->custom_finished (buildable, builder,
|
||
child, tagname, parser_data);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_type:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Returns the type of the children supported by the container.
|
||
*
|
||
* Note that this may return %G_TYPE_NONE to indicate that no more
|
||
* children can be added, e.g. for a #GtkPaned which already has two
|
||
* children.
|
||
*
|
||
* Returns: a #GType.
|
||
**/
|
||
GType
|
||
gtk_container_child_type (GtkContainer *container)
|
||
{
|
||
GType slot;
|
||
GtkContainerClass *class;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), 0);
|
||
|
||
class = GTK_CONTAINER_GET_CLASS (container);
|
||
if (class->child_type)
|
||
slot = class->child_type (container);
|
||
else
|
||
slot = G_TYPE_NONE;
|
||
|
||
return slot;
|
||
}
|
||
|
||
/* --- GtkContainer child property mechanism --- */
|
||
|
||
/**
|
||
* gtk_container_child_notify:
|
||
* @container: the #GtkContainer
|
||
* @child: the child widget
|
||
* @child_property: the name of a child property installed on
|
||
* the class of @container
|
||
*
|
||
* Emits a #GtkWidget::child-notify signal for the
|
||
* [child property][child-properties]
|
||
* @child_property on the child.
|
||
*
|
||
* This is an analogue of g_object_notify() for child properties.
|
||
*
|
||
* Also see gtk_widget_child_notify().
|
||
*
|
||
* Since: 3.2
|
||
*/
|
||
void
|
||
gtk_container_child_notify (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *child_property)
|
||
{
|
||
GObject *obj;
|
||
GParamSpec *pspec;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (child_property != NULL);
|
||
|
||
obj = G_OBJECT (child);
|
||
|
||
if (obj->ref_count == 0)
|
||
return;
|
||
|
||
g_object_ref (obj);
|
||
|
||
pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
|
||
child_property,
|
||
G_OBJECT_TYPE (container),
|
||
TRUE);
|
||
|
||
if (pspec == NULL)
|
||
{
|
||
g_warning ("%s: container class '%s' has no child property named '%s'",
|
||
G_STRLOC,
|
||
G_OBJECT_TYPE_NAME (container),
|
||
child_property);
|
||
}
|
||
else
|
||
{
|
||
GObjectNotifyQueue *nqueue;
|
||
|
||
nqueue = g_object_notify_queue_freeze (obj, _gtk_widget_child_property_notify_context);
|
||
|
||
g_object_notify_queue_add (obj, nqueue, pspec);
|
||
g_object_notify_queue_thaw (obj, nqueue);
|
||
}
|
||
|
||
g_object_unref (obj);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_notify_by_pspec:
|
||
* @container: the #GtkContainer
|
||
* @child: the child widget
|
||
* @pspec: the #GParamSpec of a child property instealled on
|
||
* the class of @container
|
||
*
|
||
* Emits a #GtkWidget::child-notify signal for the
|
||
* [child property][child-properties] specified by
|
||
* @pspec on the child.
|
||
*
|
||
* This is an analogue of g_object_notify_by_pspec() for child properties.
|
||
*
|
||
* Since: 3.18
|
||
*/
|
||
void
|
||
gtk_container_child_notify_by_pspec (GtkContainer *container,
|
||
GtkWidget *child,
|
||
GParamSpec *pspec)
|
||
{
|
||
GObject *obj = G_OBJECT (child);
|
||
GObjectNotifyQueue *nqueue;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
|
||
|
||
if (obj->ref_count == 0)
|
||
return;
|
||
|
||
g_object_ref (obj);
|
||
|
||
nqueue = g_object_notify_queue_freeze (obj, _gtk_widget_child_property_notify_context);
|
||
|
||
g_object_notify_queue_add (obj, nqueue, pspec);
|
||
g_object_notify_queue_thaw (obj, nqueue);
|
||
|
||
g_object_unref (obj);
|
||
}
|
||
|
||
static inline void
|
||
container_get_child_property (GtkContainer *container,
|
||
GtkWidget *child,
|
||
GParamSpec *pspec,
|
||
GValue *value)
|
||
{
|
||
GtkContainerClass *class = g_type_class_peek (pspec->owner_type);
|
||
|
||
class->get_child_property (container, child, PARAM_SPEC_PARAM_ID (pspec), value, pspec);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_get_valist:
|
||
* @container: a #GtkContainer
|
||
* @child: a widget which is a child of @container
|
||
* @first_property_name: the name of the first property to get
|
||
* @var_args: return location for the first property, followed
|
||
* optionally by more name/return location pairs, followed by %NULL
|
||
*
|
||
* Gets the values of one or more child properties for @child and @container.
|
||
**/
|
||
void
|
||
gtk_container_child_get_valist (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *first_property_name,
|
||
va_list var_args)
|
||
{
|
||
const gchar *name;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (child);
|
||
|
||
name = first_property_name;
|
||
while (name)
|
||
{
|
||
GValue value = G_VALUE_INIT;
|
||
GParamSpec *pspec;
|
||
gchar *error;
|
||
|
||
pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
|
||
name,
|
||
G_OBJECT_TYPE (container),
|
||
TRUE);
|
||
if (!pspec)
|
||
{
|
||
g_warning ("%s: container class '%s' has no child property named '%s'",
|
||
G_STRLOC,
|
||
G_OBJECT_TYPE_NAME (container),
|
||
name);
|
||
break;
|
||
}
|
||
if (!(pspec->flags & G_PARAM_READABLE))
|
||
{
|
||
g_warning ("%s: child property '%s' of container class '%s' is not readable",
|
||
G_STRLOC,
|
||
pspec->name,
|
||
G_OBJECT_TYPE_NAME (container));
|
||
break;
|
||
}
|
||
g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
||
container_get_child_property (container, child, pspec, &value);
|
||
G_VALUE_LCOPY (&value, var_args, 0, &error);
|
||
if (error)
|
||
{
|
||
g_warning ("%s: %s", G_STRLOC, error);
|
||
g_free (error);
|
||
g_value_unset (&value);
|
||
break;
|
||
}
|
||
g_value_unset (&value);
|
||
name = va_arg (var_args, gchar*);
|
||
}
|
||
|
||
g_object_unref (child);
|
||
g_object_unref (container);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_get_property:
|
||
* @container: a #GtkContainer
|
||
* @child: a widget which is a child of @container
|
||
* @property_name: the name of the property to get
|
||
* @value: a location to return the value
|
||
*
|
||
* Gets the value of a child property for @child and @container.
|
||
**/
|
||
void
|
||
gtk_container_child_get_property (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *property_name,
|
||
GValue *value)
|
||
{
|
||
GParamSpec *pspec;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (property_name != NULL);
|
||
g_return_if_fail (G_IS_VALUE (value));
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (child);
|
||
pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool, property_name,
|
||
G_OBJECT_TYPE (container), TRUE);
|
||
if (!pspec)
|
||
g_warning ("%s: container class '%s' has no child property named '%s'",
|
||
G_STRLOC,
|
||
G_OBJECT_TYPE_NAME (container),
|
||
property_name);
|
||
else if (!(pspec->flags & G_PARAM_READABLE))
|
||
g_warning ("%s: child property '%s' of container class '%s' is not readable",
|
||
G_STRLOC,
|
||
pspec->name,
|
||
G_OBJECT_TYPE_NAME (container));
|
||
else
|
||
{
|
||
GValue *prop_value, tmp_value = G_VALUE_INIT;
|
||
|
||
/* auto-conversion of the callers value type
|
||
*/
|
||
if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
|
||
{
|
||
g_value_reset (value);
|
||
prop_value = value;
|
||
}
|
||
else if (!g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
|
||
{
|
||
g_warning ("can't retrieve child property '%s' of type '%s' as value of type '%s'",
|
||
pspec->name,
|
||
g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
|
||
G_VALUE_TYPE_NAME (value));
|
||
g_object_unref (child);
|
||
g_object_unref (container);
|
||
return;
|
||
}
|
||
else
|
||
{
|
||
g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
|
||
prop_value = &tmp_value;
|
||
}
|
||
container_get_child_property (container, child, pspec, prop_value);
|
||
if (prop_value != value)
|
||
{
|
||
g_value_transform (prop_value, value);
|
||
g_value_unset (&tmp_value);
|
||
}
|
||
}
|
||
g_object_unref (child);
|
||
g_object_unref (container);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_set_valist:
|
||
* @container: a #GtkContainer
|
||
* @child: a widget which is a child of @container
|
||
* @first_property_name: the name of the first property to set
|
||
* @var_args: a %NULL-terminated list of property names and values, starting
|
||
* with @first_prop_name
|
||
*
|
||
* Sets one or more child properties for @child and @container.
|
||
**/
|
||
void
|
||
gtk_container_child_set_valist (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *first_property_name,
|
||
va_list var_args)
|
||
{
|
||
GObjectNotifyQueue *nqueue;
|
||
const gchar *name;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (child);
|
||
|
||
nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
|
||
name = first_property_name;
|
||
while (name)
|
||
{
|
||
GValue value = G_VALUE_INIT;
|
||
gchar *error = NULL;
|
||
GParamSpec *pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
|
||
name,
|
||
G_OBJECT_TYPE (container),
|
||
TRUE);
|
||
if (!pspec)
|
||
{
|
||
g_warning ("%s: container class '%s' has no child property named '%s'",
|
||
G_STRLOC,
|
||
G_OBJECT_TYPE_NAME (container),
|
||
name);
|
||
break;
|
||
}
|
||
if (!(pspec->flags & G_PARAM_WRITABLE))
|
||
{
|
||
g_warning ("%s: child property '%s' of container class '%s' is not writable",
|
||
G_STRLOC,
|
||
pspec->name,
|
||
G_OBJECT_TYPE_NAME (container));
|
||
break;
|
||
}
|
||
|
||
G_VALUE_COLLECT_INIT (&value, G_PARAM_SPEC_VALUE_TYPE (pspec),
|
||
var_args, 0, &error);
|
||
if (error)
|
||
{
|
||
g_warning ("%s: %s", G_STRLOC, error);
|
||
g_free (error);
|
||
|
||
/* we purposely leak the value here, it might not be
|
||
* in a sane state if an error condition occoured
|
||
*/
|
||
break;
|
||
}
|
||
container_set_child_property (container, child, pspec, &value, nqueue);
|
||
g_value_unset (&value);
|
||
name = va_arg (var_args, gchar*);
|
||
}
|
||
g_object_notify_queue_thaw (G_OBJECT (child), nqueue);
|
||
|
||
g_object_unref (container);
|
||
g_object_unref (child);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_set_property:
|
||
* @container: a #GtkContainer
|
||
* @child: a widget which is a child of @container
|
||
* @property_name: the name of the property to set
|
||
* @value: the value to set the property to
|
||
*
|
||
* Sets a child property for @child and @container.
|
||
**/
|
||
void
|
||
gtk_container_child_set_property (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *property_name,
|
||
const GValue *value)
|
||
{
|
||
GObjectNotifyQueue *nqueue;
|
||
GParamSpec *pspec;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (property_name != NULL);
|
||
g_return_if_fail (G_IS_VALUE (value));
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (child);
|
||
|
||
nqueue = g_object_notify_queue_freeze (G_OBJECT (child), _gtk_widget_child_property_notify_context);
|
||
pspec = g_param_spec_pool_lookup (_gtk_widget_child_property_pool, property_name,
|
||
G_OBJECT_TYPE (container), TRUE);
|
||
if (!pspec)
|
||
g_warning ("%s: container class '%s' has no child property named '%s'",
|
||
G_STRLOC,
|
||
G_OBJECT_TYPE_NAME (container),
|
||
property_name);
|
||
else if (!(pspec->flags & G_PARAM_WRITABLE))
|
||
g_warning ("%s: child property '%s' of container class '%s' is not writable",
|
||
G_STRLOC,
|
||
pspec->name,
|
||
G_OBJECT_TYPE_NAME (container));
|
||
else
|
||
{
|
||
container_set_child_property (container, child, pspec, value, nqueue);
|
||
}
|
||
g_object_notify_queue_thaw (G_OBJECT (child), nqueue);
|
||
g_object_unref (container);
|
||
g_object_unref (child);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_add_with_properties:
|
||
* @container: a #GtkContainer
|
||
* @widget: a widget to be placed inside @container
|
||
* @first_prop_name: the name of the first child property to set
|
||
* @...: a %NULL-terminated list of property names and values, starting
|
||
* with @first_prop_name
|
||
*
|
||
* Adds @widget to @container, setting child properties at the same time.
|
||
* See gtk_container_add() and gtk_container_child_set() for more details.
|
||
*/
|
||
void
|
||
gtk_container_add_with_properties (GtkContainer *container,
|
||
GtkWidget *widget,
|
||
const gchar *first_prop_name,
|
||
...)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
g_return_if_fail (_gtk_widget_get_parent (widget) == NULL);
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (widget);
|
||
gtk_widget_freeze_child_notify (widget);
|
||
|
||
g_signal_emit (container, container_signals[ADD], 0, widget);
|
||
if (_gtk_widget_get_parent (widget))
|
||
{
|
||
va_list var_args;
|
||
|
||
va_start (var_args, first_prop_name);
|
||
gtk_container_child_set_valist (container, widget, first_prop_name, var_args);
|
||
va_end (var_args);
|
||
}
|
||
|
||
gtk_widget_thaw_child_notify (widget);
|
||
g_object_unref (widget);
|
||
g_object_unref (container);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_set:
|
||
* @container: a #GtkContainer
|
||
* @child: a widget which is a child of @container
|
||
* @first_prop_name: the name of the first property to set
|
||
* @...: a %NULL-terminated list of property names and values, starting
|
||
* with @first_prop_name
|
||
*
|
||
* Sets one or more child properties for @child and @container.
|
||
*/
|
||
void
|
||
gtk_container_child_set (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *first_prop_name,
|
||
...)
|
||
{
|
||
va_list var_args;
|
||
|
||
va_start (var_args, first_prop_name);
|
||
gtk_container_child_set_valist (container, child, first_prop_name, var_args);
|
||
va_end (var_args);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_child_get:
|
||
* @container: a #GtkContainer
|
||
* @child: a widget which is a child of @container
|
||
* @first_prop_name: the name of the first property to get
|
||
* @...: return location for the first property, followed
|
||
* optionally by more name/return location pairs, followed by %NULL
|
||
*
|
||
* Gets the values of one or more child properties for @child and @container.
|
||
*/
|
||
void
|
||
gtk_container_child_get (GtkContainer *container,
|
||
GtkWidget *child,
|
||
const gchar *first_prop_name,
|
||
...)
|
||
{
|
||
va_list var_args;
|
||
|
||
va_start (var_args, first_prop_name);
|
||
gtk_container_child_get_valist (container, child, first_prop_name, var_args);
|
||
va_end (var_args);
|
||
}
|
||
|
||
static inline void
|
||
install_child_property_internal (GType g_type,
|
||
guint property_id,
|
||
GParamSpec *pspec)
|
||
{
|
||
if (g_param_spec_pool_lookup (_gtk_widget_child_property_pool, pspec->name, g_type, FALSE))
|
||
{
|
||
g_warning ("Class '%s' already contains a child property named '%s'",
|
||
g_type_name (g_type),
|
||
pspec->name);
|
||
return;
|
||
}
|
||
g_param_spec_ref (pspec);
|
||
g_param_spec_sink (pspec);
|
||
PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
|
||
g_param_spec_pool_insert (_gtk_widget_child_property_pool, pspec, g_type);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_class_install_child_property:
|
||
* @cclass: a #GtkContainerClass
|
||
* @property_id: the id for the property
|
||
* @pspec: the #GParamSpec for the property
|
||
*
|
||
* Installs a child property on a container class.
|
||
**/
|
||
void
|
||
gtk_container_class_install_child_property (GtkContainerClass *cclass,
|
||
guint property_id,
|
||
GParamSpec *pspec)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER_CLASS (cclass));
|
||
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
|
||
if (pspec->flags & G_PARAM_WRITABLE)
|
||
g_return_if_fail (cclass->set_child_property != NULL);
|
||
if (pspec->flags & G_PARAM_READABLE)
|
||
g_return_if_fail (cclass->get_child_property != NULL);
|
||
g_return_if_fail (property_id > 0);
|
||
g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
|
||
if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
|
||
g_return_if_fail ((pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
|
||
|
||
install_child_property_internal (G_OBJECT_CLASS_TYPE (cclass), property_id, pspec);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_class_install_child_properties:
|
||
* @cclass: a #GtkContainerClass
|
||
* @n_pspecs: the length of the #GParamSpec array
|
||
* @pspecs: (array length=n_pspecs): the #GParamSpec array defining the new
|
||
* child properties
|
||
*
|
||
* Installs child properties on a container class.
|
||
*
|
||
* Since: 3.18
|
||
*/
|
||
void
|
||
gtk_container_class_install_child_properties (GtkContainerClass *cclass,
|
||
guint n_pspecs,
|
||
GParamSpec **pspecs)
|
||
{
|
||
gint i;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER_CLASS (cclass));
|
||
g_return_if_fail (n_pspecs > 1);
|
||
g_return_if_fail (pspecs[0] == NULL);
|
||
|
||
/* we skip the first element of the array as it would have a 0 prop_id */
|
||
for (i = 1; i < n_pspecs; i++)
|
||
{
|
||
GParamSpec *pspec = pspecs[i];
|
||
|
||
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
|
||
if (pspec->flags & G_PARAM_WRITABLE)
|
||
g_return_if_fail (cclass->set_child_property != NULL);
|
||
if (pspec->flags & G_PARAM_READABLE)
|
||
g_return_if_fail (cclass->get_child_property != NULL);
|
||
g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
|
||
if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
|
||
g_return_if_fail ((pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY)) == 0);
|
||
|
||
install_child_property_internal (G_OBJECT_CLASS_TYPE (cclass), i, pspec);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_container_class_find_child_property:
|
||
* @cclass: (type GtkContainerClass): a #GtkContainerClass
|
||
* @property_name: the name of the child property to find
|
||
*
|
||
* Finds a child property of a container class by name.
|
||
*
|
||
* Returns: (nullable) (transfer none): the #GParamSpec of the child
|
||
* property or %NULL if @class has no child property with that
|
||
* name.
|
||
*/
|
||
GParamSpec*
|
||
gtk_container_class_find_child_property (GObjectClass *cclass,
|
||
const gchar *property_name)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (cclass), NULL);
|
||
g_return_val_if_fail (property_name != NULL, NULL);
|
||
|
||
return g_param_spec_pool_lookup (_gtk_widget_child_property_pool,
|
||
property_name,
|
||
G_OBJECT_CLASS_TYPE (cclass),
|
||
TRUE);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_class_list_child_properties:
|
||
* @cclass: (type GtkContainerClass): a #GtkContainerClass
|
||
* @n_properties: location to return the number of child properties found
|
||
*
|
||
* Returns all child properties of a container class.
|
||
*
|
||
* Returns: (array length=n_properties) (transfer container):
|
||
* a newly allocated %NULL-terminated array of #GParamSpec*.
|
||
* The array must be freed with g_free().
|
||
*/
|
||
GParamSpec**
|
||
gtk_container_class_list_child_properties (GObjectClass *cclass,
|
||
guint *n_properties)
|
||
{
|
||
GParamSpec **pspecs;
|
||
guint n;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER_CLASS (cclass), NULL);
|
||
|
||
pspecs = g_param_spec_pool_list (_gtk_widget_child_property_pool,
|
||
G_OBJECT_CLASS_TYPE (cclass),
|
||
&n);
|
||
if (n_properties)
|
||
*n_properties = n;
|
||
|
||
return pspecs;
|
||
}
|
||
|
||
static void
|
||
gtk_container_add_unimplemented (GtkContainer *container,
|
||
GtkWidget *widget)
|
||
{
|
||
g_warning ("GtkContainerClass::add not implemented for '%s'", g_type_name (G_TYPE_FROM_INSTANCE (container)));
|
||
}
|
||
|
||
static void
|
||
gtk_container_remove_unimplemented (GtkContainer *container,
|
||
GtkWidget *widget)
|
||
{
|
||
g_warning ("GtkContainerClass::remove not implemented for '%s'", g_type_name (G_TYPE_FROM_INSTANCE (container)));
|
||
}
|
||
|
||
static void
|
||
gtk_container_init (GtkContainer *container)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
container->priv = gtk_container_get_instance_private (container);
|
||
priv = container->priv;
|
||
|
||
priv->focus_child = NULL;
|
||
priv->border_width = 0;
|
||
priv->resize_mode = GTK_RESIZE_PARENT;
|
||
priv->reallocate_redraws = FALSE;
|
||
priv->border_width_set = FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_container_destroy (GtkWidget *widget)
|
||
{
|
||
GtkContainer *container = GTK_CONTAINER (widget);
|
||
GtkContainerPrivate *priv = container->priv;
|
||
|
||
if (priv->restyle_pending)
|
||
priv->restyle_pending = FALSE;
|
||
|
||
g_clear_object (&priv->focus_child);
|
||
|
||
/* do this before walking child widgets, to avoid
|
||
* removing children from focus chain one by one.
|
||
*/
|
||
if (priv->has_focus_chain)
|
||
gtk_container_unset_focus_chain (container);
|
||
|
||
gtk_container_foreach (container, (GtkCallback) gtk_widget_destroy, NULL);
|
||
|
||
GTK_WIDGET_CLASS (parent_class)->destroy (widget);
|
||
}
|
||
|
||
static void
|
||
gtk_container_set_property (GObject *object,
|
||
guint prop_id,
|
||
const GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkContainer *container = GTK_CONTAINER (object);
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_BORDER_WIDTH:
|
||
gtk_container_set_border_width (container, g_value_get_uint (value));
|
||
break;
|
||
case PROP_RESIZE_MODE:
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
gtk_container_set_resize_mode (container, g_value_get_enum (value));
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
break;
|
||
case PROP_CHILD:
|
||
gtk_container_add (container, GTK_WIDGET (g_value_get_object (value)));
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_container_get_property (GObject *object,
|
||
guint prop_id,
|
||
GValue *value,
|
||
GParamSpec *pspec)
|
||
{
|
||
GtkContainer *container = GTK_CONTAINER (object);
|
||
GtkContainerPrivate *priv = container->priv;
|
||
|
||
switch (prop_id)
|
||
{
|
||
case PROP_BORDER_WIDTH:
|
||
g_value_set_uint (value, priv->border_width);
|
||
break;
|
||
case PROP_RESIZE_MODE:
|
||
g_value_set_enum (value, priv->resize_mode);
|
||
break;
|
||
default:
|
||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
break;
|
||
}
|
||
}
|
||
|
||
gboolean
|
||
_gtk_container_get_border_width_set (GtkContainer *container)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
|
||
|
||
priv = container->priv;
|
||
|
||
return priv->border_width_set;
|
||
}
|
||
|
||
void
|
||
_gtk_container_set_border_width_set (GtkContainer *container,
|
||
gboolean border_width_set)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
priv = container->priv;
|
||
|
||
priv->border_width_set = border_width_set ? TRUE : FALSE;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_border_width:
|
||
* @container: a #GtkContainer
|
||
* @border_width: amount of blank space to leave outside
|
||
* the container. Valid values are in the range 0-65535 pixels.
|
||
*
|
||
* Sets the border width of the container.
|
||
*
|
||
* The border width of a container is the amount of space to leave
|
||
* around the outside of the container. The only exception to this is
|
||
* #GtkWindow; because toplevel windows can’t leave space outside,
|
||
* they leave the space inside. The border is added on all sides of
|
||
* the container. To add space to only one side, use a specific
|
||
* #GtkWidget:margin property on the child widget, for example
|
||
* #GtkWidget:margin-top.
|
||
**/
|
||
void
|
||
gtk_container_set_border_width (GtkContainer *container,
|
||
guint border_width)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
priv = container->priv;
|
||
|
||
if (priv->border_width != border_width)
|
||
{
|
||
priv->border_width = border_width;
|
||
_gtk_container_set_border_width_set (container, TRUE);
|
||
|
||
g_object_notify_by_pspec (G_OBJECT (container), container_props[PROP_BORDER_WIDTH]);
|
||
|
||
if (_gtk_widget_get_realized (GTK_WIDGET (container)))
|
||
gtk_widget_queue_resize (GTK_WIDGET (container));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_border_width:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Retrieves the border width of the container. See
|
||
* gtk_container_set_border_width().
|
||
*
|
||
* Returns: the current border width
|
||
**/
|
||
guint
|
||
gtk_container_get_border_width (GtkContainer *container)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), 0);
|
||
|
||
return container->priv->border_width;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_add:
|
||
* @container: a #GtkContainer
|
||
* @widget: a widget to be placed inside @container
|
||
*
|
||
* Adds @widget to @container. Typically used for simple containers
|
||
* such as #GtkWindow, #GtkFrame, or #GtkButton; for more complicated
|
||
* layout containers such as #GtkBox or #GtkGrid, this function will
|
||
* pick default packing parameters that may not be correct. So
|
||
* consider functions such as gtk_box_pack_start() and
|
||
* gtk_grid_attach() as an alternative to gtk_container_add() in
|
||
* those cases. A widget may be added to only one container at a time;
|
||
* you can’t place the same widget inside two different containers.
|
||
*
|
||
* Note that some containers, such as #GtkScrolledWindow or #GtkListBox,
|
||
* may add intermediate children between the added widget and the
|
||
* container.
|
||
*/
|
||
void
|
||
gtk_container_add (GtkContainer *container,
|
||
GtkWidget *widget)
|
||
{
|
||
GtkWidget *parent;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
parent = _gtk_widget_get_parent (widget);
|
||
|
||
if (parent != NULL)
|
||
{
|
||
g_warning ("Attempting to add a widget with type %s to a container of "
|
||
"type %s, but the widget is already inside a container of type %s, "
|
||
"please remove the widget from its existing container first." ,
|
||
g_type_name (G_OBJECT_TYPE (widget)),
|
||
g_type_name (G_OBJECT_TYPE (container)),
|
||
g_type_name (G_OBJECT_TYPE (parent)));
|
||
return;
|
||
}
|
||
|
||
g_signal_emit (container, container_signals[ADD], 0, widget);
|
||
|
||
_gtk_container_accessible_add (GTK_WIDGET (container), widget);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_remove:
|
||
* @container: a #GtkContainer
|
||
* @widget: a current child of @container
|
||
*
|
||
* Removes @widget from @container. @widget must be inside @container.
|
||
* Note that @container will own a reference to @widget, and that this
|
||
* may be the last reference held; so removing a widget from its
|
||
* container can destroy that widget. If you want to use @widget
|
||
* again, you need to add a reference to it before removing it from
|
||
* a container, using g_object_ref(). If you don’t want to use @widget
|
||
* again it’s usually more efficient to simply destroy it directly
|
||
* using gtk_widget_destroy() since this will remove it from the
|
||
* container and help break any circular reference count cycles.
|
||
**/
|
||
void
|
||
gtk_container_remove (GtkContainer *container,
|
||
GtkWidget *widget)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (widget));
|
||
|
||
g_object_ref (container);
|
||
g_object_ref (widget);
|
||
|
||
g_signal_emit (container, container_signals[REMOVE], 0, widget);
|
||
|
||
_gtk_container_accessible_remove (GTK_WIDGET (container), widget);
|
||
|
||
g_object_unref (widget);
|
||
g_object_unref (container);
|
||
}
|
||
|
||
static void
|
||
gtk_container_real_set_resize_mode (GtkContainer *container,
|
||
GtkResizeMode resize_mode)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (container);
|
||
GtkContainerPrivate *priv = container->priv;
|
||
|
||
if (_gtk_widget_is_toplevel (widget) &&
|
||
resize_mode == GTK_RESIZE_PARENT)
|
||
{
|
||
resize_mode = GTK_RESIZE_QUEUE;
|
||
}
|
||
|
||
if (priv->resize_mode != resize_mode)
|
||
{
|
||
priv->resize_mode = resize_mode;
|
||
|
||
gtk_widget_queue_resize (widget);
|
||
g_object_notify_by_pspec (G_OBJECT (container), container_props[PROP_RESIZE_MODE]);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_resize_mode:
|
||
* @container: a #GtkContainer
|
||
* @resize_mode: the new resize mode
|
||
*
|
||
* Sets the resize mode for the container.
|
||
*
|
||
* The resize mode of a container determines whether a resize request
|
||
* will be passed to the container’s parent, queued for later execution
|
||
* or executed immediately.
|
||
*
|
||
* Deprecated: 3.12: Resize modes are deprecated. They aren’t necessary
|
||
* anymore since frame clocks and might introduce obscure bugs if
|
||
* used.
|
||
**/
|
||
void
|
||
gtk_container_set_resize_mode (GtkContainer *container,
|
||
GtkResizeMode resize_mode)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (resize_mode <= GTK_RESIZE_IMMEDIATE);
|
||
|
||
priv = container->priv;
|
||
priv->resize_mode_set = TRUE;
|
||
|
||
gtk_container_real_set_resize_mode (container, resize_mode);
|
||
}
|
||
|
||
void
|
||
gtk_container_set_default_resize_mode (GtkContainer *container,
|
||
GtkResizeMode resize_mode)
|
||
{
|
||
GtkContainerPrivate *priv = container->priv;
|
||
|
||
if (priv->resize_mode_set)
|
||
return;
|
||
|
||
gtk_container_real_set_resize_mode (container, resize_mode);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_resize_mode:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Returns the resize mode for the container. See
|
||
* gtk_container_set_resize_mode ().
|
||
*
|
||
* Returns: the current resize mode
|
||
*
|
||
* Deprecated: 3.12: Resize modes are deprecated. They aren’t necessary
|
||
* anymore since frame clocks and might introduce obscure bugs if
|
||
* used.
|
||
**/
|
||
GtkResizeMode
|
||
gtk_container_get_resize_mode (GtkContainer *container)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), GTK_RESIZE_PARENT);
|
||
|
||
return container->priv->resize_mode;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_reallocate_redraws:
|
||
* @container: a #GtkContainer
|
||
* @needs_redraws: the new value for the container’s @reallocate_redraws flag
|
||
*
|
||
* Sets the @reallocate_redraws flag of the container to the given value.
|
||
*
|
||
* Containers requesting reallocation redraws get automatically
|
||
* redrawn if any of their children changed allocation.
|
||
*
|
||
* Deprecated: 3.14: Call gtk_widget_queue_draw() in your size_allocate handler.
|
||
**/
|
||
void
|
||
gtk_container_set_reallocate_redraws (GtkContainer *container,
|
||
gboolean needs_redraws)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
container->priv->reallocate_redraws = needs_redraws ? TRUE : FALSE;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_container_needs_idle_sizer (GtkContainer *container)
|
||
{
|
||
GtkContainerPrivate *priv = container->priv;
|
||
|
||
if (priv->resize_mode == GTK_RESIZE_PARENT)
|
||
return FALSE;
|
||
|
||
if (container->priv->restyle_pending)
|
||
return TRUE;
|
||
|
||
if (priv->resize_mode == GTK_RESIZE_IMMEDIATE)
|
||
return FALSE;
|
||
|
||
return gtk_widget_needs_allocate (GTK_WIDGET (container));
|
||
}
|
||
|
||
static void
|
||
gtk_container_idle_sizer (GdkFrameClock *clock,
|
||
GtkContainer *container)
|
||
{
|
||
/* We validate the style contexts in a single loop before even trying
|
||
* to handle resizes instead of doing validations inline.
|
||
* This is mostly necessary for compatibility reasons with old code,
|
||
* because both style_updated and size_allocate functions often change
|
||
* styles and so could cause infinite loops in this function.
|
||
*
|
||
* It's important to note that even an invalid style context returns
|
||
* sane values. So the result of an invalid style context will never be
|
||
* a program crash, but only a wrong layout or rendering.
|
||
*/
|
||
if (container->priv->restyle_pending)
|
||
{
|
||
container->priv->restyle_pending = FALSE;
|
||
gtk_css_node_validate (gtk_widget_get_css_node (GTK_WIDGET (container)));
|
||
}
|
||
|
||
/* we may be invoked with a container_resize_queue of NULL, because
|
||
* queue_resize could have been adding an extra idle function while
|
||
* the queue still got processed. we better just ignore such case
|
||
* than trying to explicitly work around them with some extra flags,
|
||
* since it doesn't cause any actual harm.
|
||
*/
|
||
if (gtk_widget_needs_allocate (GTK_WIDGET (container)))
|
||
{
|
||
gtk_container_check_resize (container);
|
||
}
|
||
|
||
if (!gtk_container_needs_idle_sizer (container))
|
||
{
|
||
_gtk_container_stop_idle_sizer (container);
|
||
}
|
||
else
|
||
{
|
||
gdk_frame_clock_request_phase (clock,
|
||
GDK_FRAME_CLOCK_PHASE_LAYOUT);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_container_start_idle_sizer (GtkContainer *container)
|
||
{
|
||
GdkFrameClock *clock;
|
||
|
||
if (container->priv->resize_handler != 0)
|
||
return;
|
||
|
||
clock = gtk_widget_get_frame_clock (GTK_WIDGET (container));
|
||
if (clock == NULL)
|
||
return;
|
||
|
||
if (!GTK_WIDGET (container)->priv->frameclock_connected)
|
||
return;
|
||
|
||
container->priv->resize_clock = clock;
|
||
container->priv->resize_handler = g_signal_connect (clock, "layout",
|
||
G_CALLBACK (gtk_container_idle_sizer), container);
|
||
gdk_frame_clock_request_phase (clock,
|
||
GDK_FRAME_CLOCK_PHASE_LAYOUT);
|
||
}
|
||
|
||
void
|
||
_gtk_container_stop_idle_sizer (GtkContainer *container)
|
||
{
|
||
if (container->priv->resize_handler == 0)
|
||
return;
|
||
|
||
g_signal_handler_disconnect (container->priv->resize_clock,
|
||
container->priv->resize_handler);
|
||
container->priv->resize_handler = 0;
|
||
container->priv->resize_clock = NULL;
|
||
}
|
||
|
||
void
|
||
gtk_container_queue_resize_handler (GtkContainer *container)
|
||
{
|
||
GtkWidget *widget;
|
||
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
g_return_if_fail (GTK_IS_RESIZE_CONTAINER (container));
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
|
||
widget = GTK_WIDGET (container);
|
||
|
||
if (_gtk_widget_get_visible (widget) &&
|
||
(_gtk_widget_is_toplevel (widget) ||
|
||
_gtk_widget_get_realized (widget)))
|
||
{
|
||
switch (container->priv->resize_mode)
|
||
{
|
||
case GTK_RESIZE_QUEUE:
|
||
if (gtk_widget_needs_allocate (widget))
|
||
gtk_container_start_idle_sizer (container);
|
||
break;
|
||
|
||
case GTK_RESIZE_IMMEDIATE:
|
||
gtk_container_check_resize (container);
|
||
break;
|
||
|
||
case GTK_RESIZE_PARENT:
|
||
default:
|
||
g_assert_not_reached ();
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
_gtk_container_queue_restyle (GtkContainer *container)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_CONTAINER (container));
|
||
|
||
priv = container->priv;
|
||
|
||
if (priv->restyle_pending)
|
||
return;
|
||
|
||
gtk_container_start_idle_sizer (container);
|
||
priv->restyle_pending = TRUE;
|
||
}
|
||
|
||
void
|
||
_gtk_container_maybe_start_idle_sizer (GtkContainer *container)
|
||
{
|
||
if (gtk_container_needs_idle_sizer (container))
|
||
gtk_container_start_idle_sizer (container);
|
||
}
|
||
|
||
void
|
||
gtk_container_check_resize (GtkContainer *container)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
g_signal_emit (container, container_signals[CHECK_RESIZE], 0);
|
||
}
|
||
|
||
static void
|
||
gtk_container_real_check_resize (GtkContainer *container)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (container);
|
||
GtkAllocation allocation;
|
||
GtkRequisition requisition;
|
||
int baseline;
|
||
|
||
if (_gtk_widget_get_alloc_needed (widget))
|
||
{
|
||
gtk_widget_get_preferred_size (widget, &requisition, NULL);
|
||
gtk_widget_get_allocated_size (widget, &allocation, &baseline);
|
||
|
||
if (requisition.width > allocation.width ||
|
||
requisition.height > allocation.height)
|
||
{
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
if (GTK_IS_RESIZE_CONTAINER (container))
|
||
{
|
||
gtk_widget_size_allocate (widget, &allocation);
|
||
}
|
||
else
|
||
gtk_widget_queue_resize (widget);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
}
|
||
else
|
||
{
|
||
gtk_widget_size_allocate_with_baseline (widget, &allocation, baseline);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
gtk_widget_ensure_allocate (widget);
|
||
}
|
||
}
|
||
|
||
/* The container hasn't changed size but one of its children
|
||
* queued a resize request. Which means that the allocation
|
||
* is not sufficient for the requisition of some child.
|
||
* We’ve already performed a size request at this point,
|
||
* so we simply need to reallocate and let the allocation
|
||
* trickle down via GTK_WIDGET_ALLOC_NEEDED flags.
|
||
*/
|
||
/**
|
||
* gtk_container_resize_children:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Deprecated: 3.10
|
||
**/
|
||
void
|
||
gtk_container_resize_children (GtkContainer *container)
|
||
{
|
||
GtkAllocation allocation;
|
||
GtkWidget *widget;
|
||
gint baseline;
|
||
|
||
/* resizing invariants:
|
||
* toplevels have *always* resize_mode != GTK_RESIZE_PARENT set.
|
||
* containers that have an idle sizer pending must be flagged with
|
||
* RESIZE_PENDING.
|
||
*/
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
widget = GTK_WIDGET (container);
|
||
gtk_widget_get_allocated_size (widget, &allocation, &baseline);
|
||
|
||
gtk_widget_size_allocate_with_baseline (widget, &allocation, baseline);
|
||
}
|
||
|
||
static void
|
||
gtk_container_adjust_size_request (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
gint *minimum_size,
|
||
gint *natural_size)
|
||
{
|
||
GtkContainer *container;
|
||
|
||
container = GTK_CONTAINER (widget);
|
||
|
||
if (GTK_CONTAINER_GET_CLASS (widget)->_handle_border_width)
|
||
{
|
||
int border_width;
|
||
|
||
border_width = container->priv->border_width;
|
||
|
||
*minimum_size += border_width * 2;
|
||
*natural_size += border_width * 2;
|
||
}
|
||
|
||
/* chain up last so gtk_widget_set_size_request() values
|
||
* will have a chance to overwrite our border width.
|
||
*/
|
||
parent_class->adjust_size_request (widget, orientation,
|
||
minimum_size, natural_size);
|
||
}
|
||
|
||
static void
|
||
gtk_container_adjust_baseline_request (GtkWidget *widget,
|
||
gint *minimum_baseline,
|
||
gint *natural_baseline)
|
||
{
|
||
GtkContainer *container;
|
||
|
||
container = GTK_CONTAINER (widget);
|
||
|
||
if (GTK_CONTAINER_GET_CLASS (widget)->_handle_border_width)
|
||
{
|
||
int border_width;
|
||
|
||
border_width = container->priv->border_width;
|
||
|
||
*minimum_baseline += border_width;
|
||
*natural_baseline += border_width;
|
||
}
|
||
|
||
parent_class->adjust_baseline_request (widget, minimum_baseline, natural_baseline);
|
||
}
|
||
|
||
static void
|
||
gtk_container_adjust_size_allocation (GtkWidget *widget,
|
||
GtkOrientation orientation,
|
||
gint *minimum_size,
|
||
gint *natural_size,
|
||
gint *allocated_pos,
|
||
gint *allocated_size)
|
||
{
|
||
GtkContainer *container;
|
||
int border_width;
|
||
|
||
container = GTK_CONTAINER (widget);
|
||
|
||
if (GTK_CONTAINER_GET_CLASS (widget)->_handle_border_width)
|
||
{
|
||
border_width = container->priv->border_width;
|
||
|
||
*allocated_size -= border_width * 2;
|
||
*allocated_pos += border_width;
|
||
*minimum_size -= border_width * 2;
|
||
*natural_size -= border_width * 2;
|
||
}
|
||
|
||
/* Chain up to GtkWidgetClass *after* removing our border width from
|
||
* the proposed allocation size. This is because it's possible that the
|
||
* widget was allocated more space than it needs in a said orientation,
|
||
* if GtkWidgetClass does any alignments and thus limits the size to the
|
||
* natural size... then we need that to be done *after* removing any margins
|
||
* and padding values.
|
||
*/
|
||
parent_class->adjust_size_allocation (widget, orientation,
|
||
minimum_size, natural_size, allocated_pos,
|
||
allocated_size);
|
||
}
|
||
|
||
static void
|
||
gtk_container_adjust_baseline_allocation (GtkWidget *widget,
|
||
gint *baseline)
|
||
{
|
||
GtkContainer *container;
|
||
int border_width;
|
||
|
||
container = GTK_CONTAINER (widget);
|
||
|
||
if (GTK_CONTAINER_GET_CLASS (widget)->_handle_border_width)
|
||
{
|
||
border_width = container->priv->border_width;
|
||
|
||
if (*baseline >= 0)
|
||
*baseline -= border_width;
|
||
}
|
||
|
||
parent_class->adjust_baseline_allocation (widget, baseline);
|
||
}
|
||
|
||
|
||
typedef struct {
|
||
gint hfw;
|
||
gint wfh;
|
||
} RequestModeCount;
|
||
|
||
static void
|
||
count_request_modes (GtkWidget *widget,
|
||
RequestModeCount *count)
|
||
{
|
||
GtkSizeRequestMode mode = gtk_widget_get_request_mode (widget);
|
||
|
||
switch (mode)
|
||
{
|
||
case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH:
|
||
count->hfw++;
|
||
break;
|
||
case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT:
|
||
count->wfh++;
|
||
break;
|
||
case GTK_SIZE_REQUEST_CONSTANT_SIZE:
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
static GtkSizeRequestMode
|
||
gtk_container_get_request_mode (GtkWidget *widget)
|
||
{
|
||
GtkContainer *container = GTK_CONTAINER (widget);
|
||
RequestModeCount count = { 0, 0 };
|
||
|
||
gtk_container_forall (container, (GtkCallback)count_request_modes, &count);
|
||
|
||
if (!count.hfw && !count.wfh)
|
||
return GTK_SIZE_REQUEST_CONSTANT_SIZE;
|
||
else
|
||
return count.wfh > count.hfw ?
|
||
GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
|
||
GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_class_handle_border_width:
|
||
* @klass: the class struct of a #GtkContainer subclass
|
||
*
|
||
* Modifies a subclass of #GtkContainerClass to automatically add and
|
||
* remove the border-width setting on GtkContainer. This allows the
|
||
* subclass to ignore the border width in its size request and
|
||
* allocate methods. The intent is for a subclass to invoke this
|
||
* in its class_init function.
|
||
*
|
||
* gtk_container_class_handle_border_width() is necessary because it
|
||
* would break API too badly to make this behavior the default. So
|
||
* subclasses must “opt in” to the parent class handling border_width
|
||
* for them.
|
||
*/
|
||
void
|
||
gtk_container_class_handle_border_width (GtkContainerClass *klass)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER_CLASS (klass));
|
||
|
||
klass->_handle_border_width = TRUE;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_forall: (virtual forall)
|
||
* @container: a #GtkContainer
|
||
* @callback: (scope call) (closure callback_data): a callback
|
||
* @callback_data: callback user data
|
||
*
|
||
* Invokes @callback on each direct child of @container, including
|
||
* children that are considered “internal” (implementation details
|
||
* of the container). “Internal” children generally weren’t added
|
||
* by the user of the container, but were added by the container
|
||
* implementation itself.
|
||
*
|
||
* Most applications should use gtk_container_foreach(), rather
|
||
* than gtk_container_forall().
|
||
**/
|
||
void
|
||
gtk_container_forall (GtkContainer *container,
|
||
GtkCallback callback,
|
||
gpointer callback_data)
|
||
{
|
||
GtkContainerClass *class;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
class = GTK_CONTAINER_GET_CLASS (container);
|
||
|
||
if (class->forall)
|
||
class->forall (container, TRUE, callback, callback_data);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_foreach:
|
||
* @container: a #GtkContainer
|
||
* @callback: (scope call): a callback
|
||
* @callback_data: callback user data
|
||
*
|
||
* Invokes @callback on each non-internal child of @container.
|
||
* See gtk_container_forall() for details on what constitutes
|
||
* an “internal” child. For all practical purposes, this function
|
||
* should iterate over precisely those child widgets that were
|
||
* added to the container by the application with explicit add()
|
||
* calls.
|
||
*
|
||
* It is permissible to remove the child from the @callback handler.
|
||
*
|
||
* Most applications should use gtk_container_foreach(),
|
||
* rather than gtk_container_forall().
|
||
**/
|
||
void
|
||
gtk_container_foreach (GtkContainer *container,
|
||
GtkCallback callback,
|
||
gpointer callback_data)
|
||
{
|
||
GtkContainerClass *class;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (callback != NULL);
|
||
|
||
class = GTK_CONTAINER_GET_CLASS (container);
|
||
|
||
if (class->forall)
|
||
class->forall (container, FALSE, callback, callback_data);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_focus_child:
|
||
* @container: a #GtkContainer
|
||
* @child: (allow-none): a #GtkWidget, or %NULL
|
||
*
|
||
* Sets, or unsets if @child is %NULL, the focused child of @container.
|
||
*
|
||
* This function emits the GtkContainer::set_focus_child signal of
|
||
* @container. Implementations of #GtkContainer can override the
|
||
* default behaviour by overriding the class closure of this signal.
|
||
*
|
||
* This is function is mostly meant to be used by widgets. Applications can use
|
||
* gtk_widget_grab_focus() to manually set the focus to a specific widget.
|
||
*/
|
||
void
|
||
gtk_container_set_focus_child (GtkContainer *container,
|
||
GtkWidget *child)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
if (child)
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
|
||
g_signal_emit (container, container_signals[SET_FOCUS_CHILD], 0, child);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_focus_child:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Returns the current focus child widget inside @container. This is not the
|
||
* currently focused widget. That can be obtained by calling
|
||
* gtk_window_get_focus().
|
||
*
|
||
* Returns: (nullable) (transfer none): The child widget which will receive the
|
||
* focus inside @container when the @container is focused,
|
||
* or %NULL if none is set.
|
||
*
|
||
* Since: 2.14
|
||
**/
|
||
GtkWidget *
|
||
gtk_container_get_focus_child (GtkContainer *container)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
||
|
||
return container->priv->focus_child;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_children:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Returns the container’s non-internal children. See
|
||
* gtk_container_forall() for details on what constitutes an "internal" child.
|
||
*
|
||
* Returns: (element-type GtkWidget) (transfer container): a newly-allocated list of the container’s non-internal children.
|
||
**/
|
||
GList*
|
||
gtk_container_get_children (GtkContainer *container)
|
||
{
|
||
GList *children = NULL;
|
||
|
||
gtk_container_foreach (container,
|
||
gtk_container_children_callback,
|
||
&children);
|
||
|
||
return g_list_reverse (children);
|
||
}
|
||
|
||
static void
|
||
gtk_container_child_position_callback (GtkWidget *widget,
|
||
gpointer client_data)
|
||
{
|
||
struct {
|
||
GtkWidget *child;
|
||
guint i;
|
||
guint index;
|
||
} *data = client_data;
|
||
|
||
data->i++;
|
||
if (data->child == widget)
|
||
data->index = data->i;
|
||
}
|
||
|
||
static gchar*
|
||
gtk_container_child_default_composite_name (GtkContainer *container,
|
||
GtkWidget *child)
|
||
{
|
||
struct {
|
||
GtkWidget *child;
|
||
guint i;
|
||
guint index;
|
||
} data;
|
||
gchar *name;
|
||
|
||
/* fallback implementation */
|
||
data.child = child;
|
||
data.i = 0;
|
||
data.index = 0;
|
||
gtk_container_forall (container,
|
||
gtk_container_child_position_callback,
|
||
&data);
|
||
|
||
name = g_strdup_printf ("%s-%u",
|
||
g_type_name (G_TYPE_FROM_INSTANCE (child)),
|
||
data.index);
|
||
|
||
return name;
|
||
}
|
||
|
||
gchar*
|
||
_gtk_container_child_composite_name (GtkContainer *container,
|
||
GtkWidget *child)
|
||
{
|
||
gboolean composite_child;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
||
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
|
||
g_return_val_if_fail (_gtk_widget_get_parent (child) == GTK_WIDGET (container), NULL);
|
||
|
||
g_object_get (child, "composite-child", &composite_child, NULL);
|
||
if (composite_child)
|
||
{
|
||
static GQuark quark_composite_name = 0;
|
||
gchar *name;
|
||
|
||
if (!quark_composite_name)
|
||
quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
|
||
|
||
name = g_object_get_qdata (G_OBJECT (child), quark_composite_name);
|
||
if (!name)
|
||
{
|
||
GtkContainerClass *class;
|
||
|
||
class = GTK_CONTAINER_GET_CLASS (container);
|
||
if (class->composite_name)
|
||
name = class->composite_name (container, child);
|
||
}
|
||
else
|
||
name = g_strdup (name);
|
||
|
||
return name;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
typedef struct {
|
||
gboolean hexpand;
|
||
gboolean vexpand;
|
||
} ComputeExpandData;
|
||
|
||
static void
|
||
gtk_container_compute_expand_callback (GtkWidget *widget,
|
||
gpointer client_data)
|
||
{
|
||
ComputeExpandData *data = client_data;
|
||
|
||
/* note that we don't get_expand on the child if we already know we
|
||
* have to expand, so we only recurse into children until we find
|
||
* one that expands and then we basically don't do any more
|
||
* work. This means that we can leave some children in a
|
||
* need_compute_expand state, which is fine, as long as GtkWidget
|
||
* doesn't rely on an invariant that "if a child has
|
||
* need_compute_expand, its parents also do"
|
||
*
|
||
* gtk_widget_compute_expand() always returns FALSE if the
|
||
* child is !visible so that's taken care of.
|
||
*/
|
||
data->hexpand = data->hexpand ||
|
||
gtk_widget_compute_expand (widget, GTK_ORIENTATION_HORIZONTAL);
|
||
|
||
data->vexpand = data->vexpand ||
|
||
gtk_widget_compute_expand (widget, GTK_ORIENTATION_VERTICAL);
|
||
}
|
||
|
||
static void
|
||
gtk_container_compute_expand (GtkWidget *widget,
|
||
gboolean *hexpand_p,
|
||
gboolean *vexpand_p)
|
||
{
|
||
ComputeExpandData data;
|
||
|
||
data.hexpand = FALSE;
|
||
data.vexpand = FALSE;
|
||
|
||
gtk_container_forall (GTK_CONTAINER (widget),
|
||
gtk_container_compute_expand_callback,
|
||
&data);
|
||
|
||
*hexpand_p = data.hexpand;
|
||
*vexpand_p = data.vexpand;
|
||
}
|
||
|
||
static void
|
||
gtk_container_real_set_focus_child (GtkContainer *container,
|
||
GtkWidget *child)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (child == NULL || GTK_IS_WIDGET (child));
|
||
|
||
priv = container->priv;
|
||
|
||
if (child != priv->focus_child)
|
||
{
|
||
if (priv->focus_child)
|
||
g_object_unref (priv->focus_child);
|
||
|
||
priv->focus_child = child;
|
||
|
||
if (priv->focus_child)
|
||
g_object_ref (priv->focus_child);
|
||
}
|
||
|
||
/* Check for h/v adjustments and scroll to show the focus child if possible */
|
||
if (priv->focus_child)
|
||
{
|
||
GtkAdjustment *hadj;
|
||
GtkAdjustment *vadj;
|
||
GtkAllocation allocation;
|
||
GtkWidget *focus_child;
|
||
gint x, y;
|
||
|
||
hadj = g_object_get_qdata (G_OBJECT (container), hadjustment_key_id);
|
||
vadj = g_object_get_qdata (G_OBJECT (container), vadjustment_key_id);
|
||
if (hadj || vadj)
|
||
{
|
||
focus_child = priv->focus_child;
|
||
while (GTK_IS_CONTAINER (focus_child) && gtk_container_get_focus_child (GTK_CONTAINER (focus_child)))
|
||
{
|
||
focus_child = gtk_container_get_focus_child (GTK_CONTAINER (focus_child));
|
||
}
|
||
|
||
if (!gtk_widget_translate_coordinates (focus_child, priv->focus_child,
|
||
0, 0, &x, &y))
|
||
return;
|
||
|
||
_gtk_widget_get_allocation (priv->focus_child, &allocation);
|
||
x += allocation.x;
|
||
y += allocation.y;
|
||
|
||
_gtk_widget_get_allocation (focus_child, &allocation);
|
||
|
||
if (vadj)
|
||
gtk_adjustment_clamp_page (vadj, y, y + allocation.height);
|
||
|
||
if (hadj)
|
||
gtk_adjustment_clamp_page (hadj, x, x + allocation.width);
|
||
}
|
||
}
|
||
}
|
||
|
||
static GList*
|
||
get_focus_chain (GtkContainer *container)
|
||
{
|
||
return g_object_get_qdata (G_OBJECT (container), quark_focus_chain);
|
||
}
|
||
|
||
/* same as gtk_container_get_children, except it includes internals
|
||
*/
|
||
GList *
|
||
gtk_container_get_all_children (GtkContainer *container)
|
||
{
|
||
GList *children = NULL;
|
||
|
||
gtk_container_forall (container,
|
||
gtk_container_children_callback,
|
||
&children);
|
||
|
||
return children;
|
||
}
|
||
|
||
static GtkWidgetPath *
|
||
gtk_container_real_get_path_for_child (GtkContainer *container,
|
||
GtkWidget *child)
|
||
{
|
||
GtkWidgetPath *path;
|
||
GtkWidget *widget = GTK_WIDGET (container);
|
||
|
||
path = _gtk_widget_create_path (widget);
|
||
|
||
gtk_widget_path_append_for_widget (path, child);
|
||
|
||
return path;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_container_focus (GtkWidget *widget,
|
||
GtkDirectionType direction)
|
||
{
|
||
GList *children;
|
||
GList *sorted_children;
|
||
gint return_val;
|
||
GtkContainer *container;
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (widget), FALSE);
|
||
|
||
container = GTK_CONTAINER (widget);
|
||
priv = container->priv;
|
||
|
||
return_val = FALSE;
|
||
|
||
if (gtk_widget_get_can_focus (widget))
|
||
{
|
||
if (!gtk_widget_has_focus (widget))
|
||
{
|
||
gtk_widget_grab_focus (widget);
|
||
return_val = TRUE;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Get a list of the containers children, allowing focus
|
||
* chain to override.
|
||
*/
|
||
if (priv->has_focus_chain)
|
||
children = g_list_copy (get_focus_chain (container));
|
||
else
|
||
children = gtk_container_get_all_children (container);
|
||
|
||
if (priv->has_focus_chain &&
|
||
(direction == GTK_DIR_TAB_FORWARD ||
|
||
direction == GTK_DIR_TAB_BACKWARD))
|
||
{
|
||
sorted_children = g_list_copy (children);
|
||
|
||
if (direction == GTK_DIR_TAB_BACKWARD)
|
||
sorted_children = g_list_reverse (sorted_children);
|
||
}
|
||
else
|
||
sorted_children = _gtk_container_focus_sort (container, children, direction, NULL);
|
||
|
||
return_val = gtk_container_focus_move (container, sorted_children, direction);
|
||
|
||
g_list_free (sorted_children);
|
||
g_list_free (children);
|
||
}
|
||
|
||
return return_val;
|
||
}
|
||
|
||
static gint
|
||
tab_compare (gconstpointer a,
|
||
gconstpointer b,
|
||
gpointer data)
|
||
{
|
||
GtkAllocation child1_allocation, child2_allocation;
|
||
const GtkWidget *child1 = a;
|
||
const GtkWidget *child2 = b;
|
||
GtkTextDirection text_direction = GPOINTER_TO_INT (data);
|
||
gint y1, y2;
|
||
|
||
_gtk_widget_get_allocation ((GtkWidget *) child1, &child1_allocation);
|
||
_gtk_widget_get_allocation ((GtkWidget *) child2, &child2_allocation);
|
||
|
||
y1 = child1_allocation.y + child1_allocation.height / 2;
|
||
y2 = child2_allocation.y + child2_allocation.height / 2;
|
||
|
||
if (y1 == y2)
|
||
{
|
||
gint x1 = child1_allocation.x + child1_allocation.width / 2;
|
||
gint x2 = child2_allocation.x + child2_allocation.width / 2;
|
||
|
||
if (text_direction == GTK_TEXT_DIR_RTL)
|
||
return (x1 < x2) ? 1 : ((x1 == x2) ? 0 : -1);
|
||
else
|
||
return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
|
||
}
|
||
else
|
||
return (y1 < y2) ? -1 : 1;
|
||
}
|
||
|
||
static GList *
|
||
gtk_container_focus_sort_tab (GtkContainer *container,
|
||
GList *children,
|
||
GtkDirectionType direction,
|
||
GtkWidget *old_focus)
|
||
{
|
||
GtkTextDirection text_direction = _gtk_widget_get_direction (GTK_WIDGET (container));
|
||
children = g_list_sort_with_data (children, tab_compare, GINT_TO_POINTER (text_direction));
|
||
|
||
/* if we are going backwards then reverse the order
|
||
* of the children.
|
||
*/
|
||
if (direction == GTK_DIR_TAB_BACKWARD)
|
||
children = g_list_reverse (children);
|
||
|
||
return children;
|
||
}
|
||
|
||
/* Get coordinates of @widget's allocation with respect to
|
||
* allocation of @container.
|
||
*/
|
||
static gboolean
|
||
get_allocation_coords (GtkContainer *container,
|
||
GtkWidget *widget,
|
||
GdkRectangle *allocation)
|
||
{
|
||
gtk_widget_get_allocation (widget, allocation);
|
||
|
||
return gtk_widget_translate_coordinates (widget, GTK_WIDGET (container),
|
||
0, 0, &allocation->x, &allocation->y);
|
||
}
|
||
|
||
/* Look for a child in @children that is intermediate between
|
||
* the focus widget and container. This widget, if it exists,
|
||
* acts as the starting widget for focus navigation.
|
||
*/
|
||
static GtkWidget *
|
||
find_old_focus (GtkContainer *container,
|
||
GList *children)
|
||
{
|
||
GList *tmp_list = children;
|
||
while (tmp_list)
|
||
{
|
||
GtkWidget *child = tmp_list->data;
|
||
GtkWidget *widget = child;
|
||
|
||
while (widget && widget != (GtkWidget *)container)
|
||
{
|
||
GtkWidget *parent;
|
||
|
||
parent = _gtk_widget_get_parent (widget);
|
||
|
||
if (parent && (gtk_container_get_focus_child (GTK_CONTAINER (parent)) != widget))
|
||
goto next;
|
||
|
||
widget = parent;
|
||
}
|
||
|
||
return child;
|
||
|
||
next:
|
||
tmp_list = tmp_list->next;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static gboolean
|
||
old_focus_coords (GtkContainer *container,
|
||
GdkRectangle *old_focus_rect)
|
||
{
|
||
GtkWidget *widget = GTK_WIDGET (container);
|
||
GtkWidget *toplevel = _gtk_widget_get_toplevel (widget);
|
||
GtkWidget *old_focus;
|
||
|
||
if (GTK_IS_WINDOW (toplevel))
|
||
{
|
||
old_focus = gtk_window_get_focus (GTK_WINDOW (toplevel));
|
||
if (old_focus)
|
||
return get_allocation_coords (container, old_focus, old_focus_rect);
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
typedef struct _CompareInfo CompareInfo;
|
||
|
||
struct _CompareInfo
|
||
{
|
||
GtkContainer *container;
|
||
gint x;
|
||
gint y;
|
||
gboolean reverse;
|
||
};
|
||
|
||
static gint
|
||
up_down_compare (gconstpointer a,
|
||
gconstpointer b,
|
||
gpointer data)
|
||
{
|
||
GdkRectangle allocation1;
|
||
GdkRectangle allocation2;
|
||
CompareInfo *compare = data;
|
||
gint y1, y2;
|
||
|
||
get_allocation_coords (compare->container, (GtkWidget *)a, &allocation1);
|
||
get_allocation_coords (compare->container, (GtkWidget *)b, &allocation2);
|
||
|
||
y1 = allocation1.y + allocation1.height / 2;
|
||
y2 = allocation2.y + allocation2.height / 2;
|
||
|
||
if (y1 == y2)
|
||
{
|
||
gint x1 = abs (allocation1.x + allocation1.width / 2 - compare->x);
|
||
gint x2 = abs (allocation2.x + allocation2.width / 2 - compare->x);
|
||
|
||
if (compare->reverse)
|
||
return (x1 < x2) ? 1 : ((x1 == x2) ? 0 : -1);
|
||
else
|
||
return (x1 < x2) ? -1 : ((x1 == x2) ? 0 : 1);
|
||
}
|
||
else
|
||
return (y1 < y2) ? -1 : 1;
|
||
}
|
||
|
||
static GList *
|
||
gtk_container_focus_sort_up_down (GtkContainer *container,
|
||
GList *children,
|
||
GtkDirectionType direction,
|
||
GtkWidget *old_focus)
|
||
{
|
||
CompareInfo compare;
|
||
GList *tmp_list;
|
||
GdkRectangle old_allocation;
|
||
|
||
compare.container = container;
|
||
compare.reverse = (direction == GTK_DIR_UP);
|
||
|
||
if (!old_focus)
|
||
old_focus = find_old_focus (container, children);
|
||
|
||
if (old_focus && get_allocation_coords (container, old_focus, &old_allocation))
|
||
{
|
||
gint compare_x1;
|
||
gint compare_x2;
|
||
gint compare_y;
|
||
|
||
/* Delete widgets from list that don't match minimum criteria */
|
||
|
||
compare_x1 = old_allocation.x;
|
||
compare_x2 = old_allocation.x + old_allocation.width;
|
||
|
||
if (direction == GTK_DIR_UP)
|
||
compare_y = old_allocation.y;
|
||
else
|
||
compare_y = old_allocation.y + old_allocation.height;
|
||
|
||
tmp_list = children;
|
||
while (tmp_list)
|
||
{
|
||
GtkWidget *child = tmp_list->data;
|
||
GList *next = tmp_list->next;
|
||
gint child_x1, child_x2;
|
||
GdkRectangle child_allocation;
|
||
|
||
if (child != old_focus)
|
||
{
|
||
if (get_allocation_coords (container, child, &child_allocation))
|
||
{
|
||
child_x1 = child_allocation.x;
|
||
child_x2 = child_allocation.x + child_allocation.width;
|
||
|
||
if ((child_x2 <= compare_x1 || child_x1 >= compare_x2) /* No horizontal overlap */ ||
|
||
(direction == GTK_DIR_DOWN && child_allocation.y + child_allocation.height < compare_y) || /* Not below */
|
||
(direction == GTK_DIR_UP && child_allocation.y > compare_y)) /* Not above */
|
||
{
|
||
children = g_list_delete_link (children, tmp_list);
|
||
}
|
||
}
|
||
else
|
||
children = g_list_delete_link (children, tmp_list);
|
||
}
|
||
|
||
tmp_list = next;
|
||
}
|
||
|
||
compare.x = (compare_x1 + compare_x2) / 2;
|
||
compare.y = old_allocation.y + old_allocation.height / 2;
|
||
}
|
||
else
|
||
{
|
||
/* No old focus widget, need to figure out starting x,y some other way
|
||
*/
|
||
GtkAllocation allocation;
|
||
GtkWidget *widget = GTK_WIDGET (container);
|
||
GdkRectangle old_focus_rect;
|
||
|
||
_gtk_widget_get_allocation (widget, &allocation);
|
||
|
||
if (old_focus_coords (container, &old_focus_rect))
|
||
{
|
||
compare.x = old_focus_rect.x + old_focus_rect.width / 2;
|
||
}
|
||
else
|
||
{
|
||
if (!_gtk_widget_get_has_window (widget))
|
||
compare.x = allocation.x + allocation.width / 2;
|
||
else
|
||
compare.x = allocation.width / 2;
|
||
}
|
||
|
||
if (!_gtk_widget_get_has_window (widget))
|
||
compare.y = (direction == GTK_DIR_DOWN) ? allocation.y : allocation.y + allocation.height;
|
||
else
|
||
compare.y = (direction == GTK_DIR_DOWN) ? 0 : + allocation.height;
|
||
}
|
||
|
||
children = g_list_sort_with_data (children, up_down_compare, &compare);
|
||
|
||
if (compare.reverse)
|
||
children = g_list_reverse (children);
|
||
|
||
return children;
|
||
}
|
||
|
||
static gint
|
||
left_right_compare (gconstpointer a,
|
||
gconstpointer b,
|
||
gpointer data)
|
||
{
|
||
GdkRectangle allocation1;
|
||
GdkRectangle allocation2;
|
||
CompareInfo *compare = data;
|
||
gint x1, x2;
|
||
|
||
get_allocation_coords (compare->container, (GtkWidget *)a, &allocation1);
|
||
get_allocation_coords (compare->container, (GtkWidget *)b, &allocation2);
|
||
|
||
x1 = allocation1.x + allocation1.width / 2;
|
||
x2 = allocation2.x + allocation2.width / 2;
|
||
|
||
if (x1 == x2)
|
||
{
|
||
gint y1 = abs (allocation1.y + allocation1.height / 2 - compare->y);
|
||
gint y2 = abs (allocation2.y + allocation2.height / 2 - compare->y);
|
||
|
||
if (compare->reverse)
|
||
return (y1 < y2) ? 1 : ((y1 == y2) ? 0 : -1);
|
||
else
|
||
return (y1 < y2) ? -1 : ((y1 == y2) ? 0 : 1);
|
||
}
|
||
else
|
||
return (x1 < x2) ? -1 : 1;
|
||
}
|
||
|
||
static GList *
|
||
gtk_container_focus_sort_left_right (GtkContainer *container,
|
||
GList *children,
|
||
GtkDirectionType direction,
|
||
GtkWidget *old_focus)
|
||
{
|
||
CompareInfo compare;
|
||
GList *tmp_list;
|
||
GdkRectangle old_allocation;
|
||
|
||
compare.container = container;
|
||
compare.reverse = (direction == GTK_DIR_LEFT);
|
||
|
||
if (!old_focus)
|
||
old_focus = find_old_focus (container, children);
|
||
|
||
if (old_focus && get_allocation_coords (container, old_focus, &old_allocation))
|
||
{
|
||
gint compare_y1;
|
||
gint compare_y2;
|
||
gint compare_x;
|
||
|
||
/* Delete widgets from list that don't match minimum criteria */
|
||
|
||
compare_y1 = old_allocation.y;
|
||
compare_y2 = old_allocation.y + old_allocation.height;
|
||
|
||
if (direction == GTK_DIR_LEFT)
|
||
compare_x = old_allocation.x;
|
||
else
|
||
compare_x = old_allocation.x + old_allocation.width;
|
||
|
||
tmp_list = children;
|
||
while (tmp_list)
|
||
{
|
||
GtkWidget *child = tmp_list->data;
|
||
GList *next = tmp_list->next;
|
||
gint child_y1, child_y2;
|
||
GdkRectangle child_allocation;
|
||
|
||
if (child != old_focus)
|
||
{
|
||
if (get_allocation_coords (container, child, &child_allocation))
|
||
{
|
||
child_y1 = child_allocation.y;
|
||
child_y2 = child_allocation.y + child_allocation.height;
|
||
|
||
if ((child_y2 <= compare_y1 || child_y1 >= compare_y2) /* No vertical overlap */ ||
|
||
(direction == GTK_DIR_RIGHT && child_allocation.x + child_allocation.width < compare_x) || /* Not to left */
|
||
(direction == GTK_DIR_LEFT && child_allocation.x > compare_x)) /* Not to right */
|
||
{
|
||
children = g_list_delete_link (children, tmp_list);
|
||
}
|
||
}
|
||
else
|
||
children = g_list_delete_link (children, tmp_list);
|
||
}
|
||
|
||
tmp_list = next;
|
||
}
|
||
|
||
compare.y = (compare_y1 + compare_y2) / 2;
|
||
compare.x = old_allocation.x + old_allocation.width / 2;
|
||
}
|
||
else
|
||
{
|
||
/* No old focus widget, need to figure out starting x,y some other way
|
||
*/
|
||
GtkAllocation allocation;
|
||
GtkWidget *widget = GTK_WIDGET (container);
|
||
GdkRectangle old_focus_rect;
|
||
|
||
_gtk_widget_get_allocation (widget, &allocation);
|
||
|
||
if (old_focus_coords (container, &old_focus_rect))
|
||
{
|
||
compare.y = old_focus_rect.y + old_focus_rect.height / 2;
|
||
}
|
||
else
|
||
{
|
||
if (!_gtk_widget_get_has_window (widget))
|
||
compare.y = allocation.y + allocation.height / 2;
|
||
else
|
||
compare.y = allocation.height / 2;
|
||
}
|
||
|
||
if (!_gtk_widget_get_has_window (widget))
|
||
compare.x = (direction == GTK_DIR_RIGHT) ? allocation.x : allocation.x + allocation.width;
|
||
else
|
||
compare.x = (direction == GTK_DIR_RIGHT) ? 0 : allocation.width;
|
||
}
|
||
|
||
children = g_list_sort_with_data (children, left_right_compare, &compare);
|
||
|
||
if (compare.reverse)
|
||
children = g_list_reverse (children);
|
||
|
||
return children;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_focus_sort:
|
||
* @container: a #GtkContainer
|
||
* @children: a list of descendents of @container (they don't
|
||
* have to be direct children)
|
||
* @direction: focus direction
|
||
* @old_focus: (allow-none): widget to use for the starting position, or %NULL
|
||
* to determine this automatically.
|
||
* (Note, this argument isn’t used for GTK_DIR_TAB_*,
|
||
* which is the only @direction we use currently,
|
||
* so perhaps this argument should be removed)
|
||
*
|
||
* Sorts @children in the correct order for focusing with
|
||
* direction type @direction.
|
||
*
|
||
* Returns: a copy of @children, sorted in correct focusing order,
|
||
* with children that aren’t suitable for focusing in this direction
|
||
* removed.
|
||
**/
|
||
GList *
|
||
_gtk_container_focus_sort (GtkContainer *container,
|
||
GList *children,
|
||
GtkDirectionType direction,
|
||
GtkWidget *old_focus)
|
||
{
|
||
GList *visible_children = NULL;
|
||
|
||
while (children)
|
||
{
|
||
if (_gtk_widget_get_realized (children->data))
|
||
visible_children = g_list_prepend (visible_children, children->data);
|
||
children = children->next;
|
||
}
|
||
|
||
switch (direction)
|
||
{
|
||
case GTK_DIR_TAB_FORWARD:
|
||
case GTK_DIR_TAB_BACKWARD:
|
||
return gtk_container_focus_sort_tab (container, visible_children, direction, old_focus);
|
||
case GTK_DIR_UP:
|
||
case GTK_DIR_DOWN:
|
||
return gtk_container_focus_sort_up_down (container, visible_children, direction, old_focus);
|
||
case GTK_DIR_LEFT:
|
||
case GTK_DIR_RIGHT:
|
||
return gtk_container_focus_sort_left_right (container, visible_children, direction, old_focus);
|
||
}
|
||
|
||
g_assert_not_reached ();
|
||
|
||
return NULL;
|
||
}
|
||
|
||
static gboolean
|
||
gtk_container_focus_move (GtkContainer *container,
|
||
GList *children,
|
||
GtkDirectionType direction)
|
||
{
|
||
GtkContainerPrivate *priv = container->priv;
|
||
GtkWidget *focus_child;
|
||
GtkWidget *child;
|
||
|
||
focus_child = priv->focus_child;
|
||
|
||
while (children)
|
||
{
|
||
child = children->data;
|
||
children = children->next;
|
||
|
||
if (!child)
|
||
continue;
|
||
|
||
if (focus_child)
|
||
{
|
||
if (focus_child == child)
|
||
{
|
||
focus_child = NULL;
|
||
|
||
if (gtk_widget_child_focus (child, direction))
|
||
return TRUE;
|
||
}
|
||
}
|
||
else if (_gtk_widget_is_drawable (child) &&
|
||
gtk_widget_is_ancestor (child, GTK_WIDGET (container)))
|
||
{
|
||
if (gtk_widget_child_focus (child, direction))
|
||
return TRUE;
|
||
}
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
|
||
static void
|
||
gtk_container_children_callback (GtkWidget *widget,
|
||
gpointer client_data)
|
||
{
|
||
GList **children;
|
||
|
||
children = (GList**) client_data;
|
||
*children = g_list_prepend (*children, widget);
|
||
}
|
||
|
||
static void
|
||
chain_widget_destroyed (GtkWidget *widget,
|
||
gpointer user_data)
|
||
{
|
||
GtkContainer *container;
|
||
GList *chain;
|
||
|
||
container = GTK_CONTAINER (user_data);
|
||
|
||
chain = g_object_get_qdata (G_OBJECT (container), quark_focus_chain);
|
||
|
||
chain = g_list_remove (chain, widget);
|
||
|
||
g_signal_handlers_disconnect_by_func (widget,
|
||
chain_widget_destroyed,
|
||
user_data);
|
||
|
||
g_object_set_qdata (G_OBJECT (container), quark_focus_chain, chain);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_focus_chain:
|
||
* @container: a #GtkContainer
|
||
* @focusable_widgets: (transfer none) (element-type GtkWidget):
|
||
* the new focus chain
|
||
*
|
||
* Sets a focus chain, overriding the one computed automatically by GTK+.
|
||
*
|
||
* In principle each widget in the chain should be a descendant of the
|
||
* container, but this is not enforced by this method, since it’s allowed
|
||
* to set the focus chain before you pack the widgets, or have a widget
|
||
* in the chain that isn’t always packed. The necessary checks are done
|
||
* when the focus chain is actually traversed.
|
||
*
|
||
* Deprecated: 3.24: For overriding focus behavior, use the
|
||
* GtkWidgetClass::focus signal.
|
||
**/
|
||
void
|
||
gtk_container_set_focus_chain (GtkContainer *container,
|
||
GList *focusable_widgets)
|
||
{
|
||
GList *chain;
|
||
GList *tmp_list;
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
priv = container->priv;
|
||
|
||
if (priv->has_focus_chain)
|
||
gtk_container_unset_focus_chain (container);
|
||
|
||
priv->has_focus_chain = TRUE;
|
||
|
||
chain = NULL;
|
||
tmp_list = focusable_widgets;
|
||
while (tmp_list != NULL)
|
||
{
|
||
g_return_if_fail (GTK_IS_WIDGET (tmp_list->data));
|
||
|
||
/* In principle each widget in the chain should be a descendant
|
||
* of the container, but we don't want to check that here. It's
|
||
* expensive and also it's allowed to set the focus chain before
|
||
* you pack the widgets, or have a widget in the chain that isn't
|
||
* always packed. So we check for ancestor during actual traversal.
|
||
*/
|
||
|
||
chain = g_list_prepend (chain, tmp_list->data);
|
||
|
||
g_signal_connect (tmp_list->data,
|
||
"destroy",
|
||
G_CALLBACK (chain_widget_destroyed),
|
||
container);
|
||
|
||
tmp_list = tmp_list->next;
|
||
}
|
||
|
||
chain = g_list_reverse (chain);
|
||
|
||
g_object_set_qdata (G_OBJECT (container), quark_focus_chain, chain);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_focus_chain:
|
||
* @container: a #GtkContainer
|
||
* @focusable_widgets: (element-type GtkWidget) (out) (transfer container): location
|
||
* to store the focus chain of the
|
||
* container, or %NULL. You should free this list
|
||
* using g_list_free() when you are done with it, however
|
||
* no additional reference count is added to the
|
||
* individual widgets in the focus chain.
|
||
*
|
||
* Retrieves the focus chain of the container, if one has been
|
||
* set explicitly. If no focus chain has been explicitly
|
||
* set, GTK+ computes the focus chain based on the positions
|
||
* of the children. In that case, GTK+ stores %NULL in
|
||
* @focusable_widgets and returns %FALSE.
|
||
*
|
||
* Returns: %TRUE if the focus chain of the container
|
||
* has been set explicitly.
|
||
*
|
||
* Deprecated: 3.24: For overriding focus behavior, use the
|
||
* GtkWidgetClass::focus signal.
|
||
**/
|
||
gboolean
|
||
gtk_container_get_focus_chain (GtkContainer *container,
|
||
GList **focus_chain)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
|
||
|
||
priv = container->priv;
|
||
|
||
if (focus_chain)
|
||
{
|
||
if (priv->has_focus_chain)
|
||
*focus_chain = g_list_copy (get_focus_chain (container));
|
||
else
|
||
*focus_chain = NULL;
|
||
}
|
||
|
||
return priv->has_focus_chain;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_unset_focus_chain:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Removes a focus chain explicitly set with gtk_container_set_focus_chain().
|
||
*
|
||
* Deprecated: 3.24: For overriding focus behavior, use the
|
||
* GtkWidgetClass::focus signal.
|
||
**/
|
||
void
|
||
gtk_container_unset_focus_chain (GtkContainer *container)
|
||
{
|
||
GtkContainerPrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
|
||
priv = container->priv;
|
||
|
||
if (priv->has_focus_chain)
|
||
{
|
||
GList *chain;
|
||
GList *tmp_list;
|
||
|
||
chain = get_focus_chain (container);
|
||
|
||
priv->has_focus_chain = FALSE;
|
||
|
||
g_object_set_qdata (G_OBJECT (container), quark_focus_chain, NULL);
|
||
|
||
tmp_list = chain;
|
||
while (tmp_list != NULL)
|
||
{
|
||
g_signal_handlers_disconnect_by_func (tmp_list->data,
|
||
chain_widget_destroyed,
|
||
container);
|
||
|
||
tmp_list = tmp_list->next;
|
||
}
|
||
|
||
g_list_free (chain);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_focus_vadjustment:
|
||
* @container: a #GtkContainer
|
||
* @adjustment: an adjustment which should be adjusted when the focus
|
||
* is moved among the descendents of @container
|
||
*
|
||
* Hooks up an adjustment to focus handling in a container, so when a
|
||
* child of the container is focused, the adjustment is scrolled to
|
||
* show that widget. This function sets the vertical alignment. See
|
||
* gtk_scrolled_window_get_vadjustment() for a typical way of obtaining
|
||
* the adjustment and gtk_container_set_focus_hadjustment() for setting
|
||
* the horizontal adjustment.
|
||
*
|
||
* The adjustments have to be in pixel units and in the same coordinate
|
||
* system as the allocation for immediate children of the container.
|
||
*/
|
||
void
|
||
gtk_container_set_focus_vadjustment (GtkContainer *container,
|
||
GtkAdjustment *adjustment)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
if (adjustment)
|
||
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
||
|
||
if (adjustment)
|
||
g_object_ref (adjustment);
|
||
|
||
g_object_set_qdata_full (G_OBJECT (container),
|
||
vadjustment_key_id,
|
||
adjustment,
|
||
g_object_unref);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_focus_vadjustment:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Retrieves the vertical focus adjustment for the container. See
|
||
* gtk_container_set_focus_vadjustment().
|
||
*
|
||
* Returns: (nullable) (transfer none): the vertical focus adjustment, or
|
||
* %NULL if none has been set.
|
||
**/
|
||
GtkAdjustment *
|
||
gtk_container_get_focus_vadjustment (GtkContainer *container)
|
||
{
|
||
GtkAdjustment *vadjustment;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
||
|
||
vadjustment = g_object_get_qdata (G_OBJECT (container), vadjustment_key_id);
|
||
|
||
return vadjustment;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_set_focus_hadjustment:
|
||
* @container: a #GtkContainer
|
||
* @adjustment: an adjustment which should be adjusted when the focus is
|
||
* moved among the descendents of @container
|
||
*
|
||
* Hooks up an adjustment to focus handling in a container, so when a child
|
||
* of the container is focused, the adjustment is scrolled to show that
|
||
* widget. This function sets the horizontal alignment.
|
||
* See gtk_scrolled_window_get_hadjustment() for a typical way of obtaining
|
||
* the adjustment and gtk_container_set_focus_vadjustment() for setting
|
||
* the vertical adjustment.
|
||
*
|
||
* The adjustments have to be in pixel units and in the same coordinate
|
||
* system as the allocation for immediate children of the container.
|
||
*/
|
||
void
|
||
gtk_container_set_focus_hadjustment (GtkContainer *container,
|
||
GtkAdjustment *adjustment)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
if (adjustment)
|
||
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
|
||
|
||
if (adjustment)
|
||
g_object_ref (adjustment);
|
||
|
||
g_object_set_qdata_full (G_OBJECT (container),
|
||
hadjustment_key_id,
|
||
adjustment,
|
||
g_object_unref);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_focus_hadjustment:
|
||
* @container: a #GtkContainer
|
||
*
|
||
* Retrieves the horizontal focus adjustment for the container. See
|
||
* gtk_container_set_focus_hadjustment ().
|
||
*
|
||
* Returns: (nullable) (transfer none): the horizontal focus adjustment, or %NULL if
|
||
* none has been set.
|
||
**/
|
||
GtkAdjustment *
|
||
gtk_container_get_focus_hadjustment (GtkContainer *container)
|
||
{
|
||
GtkAdjustment *hadjustment;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
||
|
||
hadjustment = g_object_get_qdata (G_OBJECT (container), hadjustment_key_id);
|
||
|
||
return hadjustment;
|
||
}
|
||
|
||
|
||
static void
|
||
gtk_container_show_all (GtkWidget *widget)
|
||
{
|
||
g_return_if_fail (GTK_IS_CONTAINER (widget));
|
||
|
||
gtk_container_foreach (GTK_CONTAINER (widget),
|
||
(GtkCallback) gtk_widget_show_all,
|
||
NULL);
|
||
gtk_widget_show (widget);
|
||
}
|
||
|
||
typedef struct {
|
||
GtkWidget *child;
|
||
int window_depth;
|
||
} ChildOrderInfo;
|
||
|
||
static void
|
||
gtk_container_draw_forall (GtkWidget *widget,
|
||
gpointer client_data)
|
||
{
|
||
struct {
|
||
GtkContainer *container;
|
||
GArray *child_infos;
|
||
cairo_t *cr;
|
||
} *data = client_data;
|
||
ChildOrderInfo info;
|
||
GList *siblings;
|
||
GdkWindow *window;
|
||
|
||
if (gtk_container_should_propagate_draw (data->container, widget, data->cr))
|
||
{
|
||
info.child = widget;
|
||
info.window_depth = G_MAXINT;
|
||
window = _gtk_widget_get_window (widget);
|
||
if (window != gtk_widget_get_window (GTK_WIDGET (data->container)))
|
||
{
|
||
siblings = gdk_window_peek_children (gdk_window_get_parent (window));
|
||
info.window_depth = g_list_index (siblings, window);
|
||
}
|
||
g_array_append_val (data->child_infos, info);
|
||
}
|
||
}
|
||
|
||
static gint
|
||
compare_children_for_draw (gconstpointer _a,
|
||
gconstpointer _b)
|
||
{
|
||
const ChildOrderInfo *a = _a;
|
||
const ChildOrderInfo *b = _b;
|
||
|
||
return b->window_depth - a->window_depth;
|
||
}
|
||
|
||
static gint
|
||
gtk_container_draw (GtkWidget *widget,
|
||
cairo_t *cr)
|
||
{
|
||
GtkContainer *container = GTK_CONTAINER (widget);
|
||
GArray *child_infos;
|
||
int i;
|
||
ChildOrderInfo *child_info;
|
||
struct {
|
||
GtkContainer *container;
|
||
GArray *child_infos;
|
||
cairo_t *cr;
|
||
} data;
|
||
|
||
child_infos = g_array_new (FALSE, TRUE, sizeof (ChildOrderInfo));
|
||
|
||
data.container = container;
|
||
data.cr = cr;
|
||
data.child_infos = child_infos;
|
||
gtk_container_forall (container,
|
||
gtk_container_draw_forall,
|
||
&data);
|
||
|
||
g_array_sort (child_infos, compare_children_for_draw);
|
||
|
||
for (i = 0; i < child_infos->len; i++)
|
||
{
|
||
child_info = &g_array_index (child_infos, ChildOrderInfo, i);
|
||
gtk_container_propagate_draw (container, child_info->child, cr);
|
||
}
|
||
|
||
g_array_free (child_infos, TRUE);
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gtk_container_map_child (GtkWidget *child,
|
||
gpointer client_data)
|
||
{
|
||
if (_gtk_widget_get_visible (child) &&
|
||
_gtk_widget_get_child_visible (child) &&
|
||
!_gtk_widget_get_mapped (child))
|
||
gtk_widget_map (child);
|
||
}
|
||
|
||
static void
|
||
gtk_container_map (GtkWidget *widget)
|
||
{
|
||
gtk_widget_set_mapped (widget, TRUE);
|
||
|
||
gtk_container_forall (GTK_CONTAINER (widget),
|
||
gtk_container_map_child,
|
||
NULL);
|
||
|
||
if (_gtk_widget_get_has_window (widget))
|
||
gdk_window_show (_gtk_widget_get_window (widget));
|
||
}
|
||
|
||
static void
|
||
gtk_container_unmap (GtkWidget *widget)
|
||
{
|
||
gtk_widget_set_mapped (widget, FALSE);
|
||
|
||
/* hide our window first so user doesn't see all the child windows
|
||
* vanishing one by one. (only matters these days if one of the
|
||
* children has an actual native window instead of client-side
|
||
* window, e.g. a GtkSocket would)
|
||
*/
|
||
if (_gtk_widget_get_has_window (widget))
|
||
gdk_window_hide (_gtk_widget_get_window (widget));
|
||
|
||
gtk_container_forall (GTK_CONTAINER (widget),
|
||
(GtkCallback)gtk_widget_unmap,
|
||
NULL);
|
||
}
|
||
|
||
static gboolean
|
||
gtk_container_should_propagate_draw (GtkContainer *container,
|
||
GtkWidget *child,
|
||
cairo_t *cr)
|
||
{
|
||
GdkWindow *child_in_window;
|
||
|
||
if (!_gtk_widget_is_drawable (child))
|
||
return FALSE;
|
||
|
||
/* Never propagate to a child window when exposing a window
|
||
* that is not the one the child widget is in.
|
||
*/
|
||
if (_gtk_widget_get_has_window (child))
|
||
child_in_window = gdk_window_get_parent (_gtk_widget_get_window (child));
|
||
else
|
||
child_in_window = _gtk_widget_get_window (child);
|
||
if (!gtk_cairo_should_draw_window (cr, child_in_window))
|
||
return FALSE;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
union_with_clip (GtkWidget *widget,
|
||
gpointer data)
|
||
{
|
||
GdkRectangle *clip = data;
|
||
GtkAllocation widget_clip;
|
||
|
||
if (!gtk_widget_is_visible (widget) ||
|
||
!_gtk_widget_get_child_visible (widget))
|
||
return;
|
||
|
||
gtk_widget_get_clip (widget, &widget_clip);
|
||
|
||
if (clip->width == 0 || clip->height == 0)
|
||
*clip = widget_clip;
|
||
else
|
||
gdk_rectangle_union (&widget_clip, clip, clip);
|
||
}
|
||
|
||
void
|
||
gtk_container_get_children_clip (GtkContainer *container,
|
||
GtkAllocation *out_clip)
|
||
{
|
||
memset (out_clip, 0, sizeof (GtkAllocation));
|
||
|
||
gtk_container_forall (container, union_with_clip, out_clip);
|
||
}
|
||
|
||
/**
|
||
* gtk_container_propagate_draw:
|
||
* @container: a #GtkContainer
|
||
* @child: a child of @container
|
||
* @cr: Cairo context as passed to the container. If you want to use @cr
|
||
* in container’s draw function, consider using cairo_save() and
|
||
* cairo_restore() before calling this function.
|
||
*
|
||
* When a container receives a call to the draw function, it must send
|
||
* synthetic #GtkWidget::draw calls to all children that don’t have their
|
||
* own #GdkWindows. This function provides a convenient way of doing this.
|
||
* A container, when it receives a call to its #GtkWidget::draw function,
|
||
* calls gtk_container_propagate_draw() once for each child, passing in
|
||
* the @cr the container received.
|
||
*
|
||
* gtk_container_propagate_draw() takes care of translating the origin of @cr,
|
||
* and deciding whether the draw needs to be sent to the child. It is a
|
||
* convenient and optimized way of getting the same effect as calling
|
||
* gtk_widget_draw() on the child directly.
|
||
*
|
||
* In most cases, a container can simply either inherit the
|
||
* #GtkWidget::draw implementation from #GtkContainer, or do some drawing
|
||
* and then chain to the ::draw implementation from #GtkContainer.
|
||
**/
|
||
void
|
||
gtk_container_propagate_draw (GtkContainer *container,
|
||
GtkWidget *child,
|
||
cairo_t *cr)
|
||
{
|
||
GtkAllocation allocation;
|
||
GdkWindow *window, *w;
|
||
int x, y;
|
||
|
||
g_return_if_fail (GTK_IS_CONTAINER (container));
|
||
g_return_if_fail (GTK_IS_WIDGET (child));
|
||
g_return_if_fail (cr != NULL);
|
||
g_return_if_fail (_gtk_widget_get_parent (child) == GTK_WIDGET (container));
|
||
|
||
if (!gtk_container_should_propagate_draw (container, child, cr))
|
||
return;
|
||
|
||
/* translate coordinates. Ugly business, that. */
|
||
if (!_gtk_widget_get_has_window (GTK_WIDGET (container)))
|
||
{
|
||
_gtk_widget_get_allocation (GTK_WIDGET (container), &allocation);
|
||
x = -allocation.x;
|
||
y = -allocation.y;
|
||
}
|
||
else
|
||
{
|
||
x = 0;
|
||
y = 0;
|
||
}
|
||
|
||
window = _gtk_widget_get_window (GTK_WIDGET (container));
|
||
|
||
for (w = _gtk_widget_get_window (child); w && w != window; w = gdk_window_get_parent (w))
|
||
{
|
||
int wx, wy;
|
||
gdk_window_get_position (w, &wx, &wy);
|
||
x += wx;
|
||
y += wy;
|
||
}
|
||
|
||
if (w == NULL)
|
||
{
|
||
x = 0;
|
||
y = 0;
|
||
}
|
||
|
||
if (!_gtk_widget_get_has_window (child))
|
||
{
|
||
_gtk_widget_get_allocation (child, &allocation);
|
||
x += allocation.x;
|
||
y += allocation.y;
|
||
}
|
||
|
||
cairo_save (cr);
|
||
cairo_translate (cr, x, y);
|
||
|
||
gtk_widget_draw_internal (child, cr, TRUE);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
gboolean
|
||
_gtk_container_get_reallocate_redraws (GtkContainer *container)
|
||
{
|
||
return container->priv->reallocate_redraws;
|
||
}
|
||
|
||
/**
|
||
* gtk_container_get_path_for_child:
|
||
* @container: a #GtkContainer
|
||
* @child: a child of @container
|
||
*
|
||
* Returns a newly created widget path representing all the widget hierarchy
|
||
* from the toplevel down to and including @child.
|
||
*
|
||
* Returns: A newly created #GtkWidgetPath
|
||
**/
|
||
GtkWidgetPath *
|
||
gtk_container_get_path_for_child (GtkContainer *container,
|
||
GtkWidget *child)
|
||
{
|
||
GtkWidgetPath *path;
|
||
|
||
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
|
||
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
|
||
g_return_val_if_fail (container == (GtkContainer *) _gtk_widget_get_parent (child), NULL);
|
||
|
||
path = GTK_CONTAINER_GET_CLASS (container)->get_path_for_child (container, child);
|
||
if (gtk_widget_path_get_object_type (path) != G_OBJECT_TYPE (child))
|
||
{
|
||
g_critical ("%s %p returned a widget path for type %s, but child is %s",
|
||
G_OBJECT_TYPE_NAME (container),
|
||
container,
|
||
g_type_name (gtk_widget_path_get_object_type (path)),
|
||
G_OBJECT_TYPE_NAME (child));
|
||
}
|
||
|
||
return path;
|
||
}
|