forked from AuroraMiddleware/gtk
477ad2505b
Added two new private GtkWidget API: * gtk_widget_add_surface_transform_changed_callback() * gtk_widget_remove_surface_transform_changed_callback() The intention is to let the user know when a widget transform relative to the surface changes. It works by calculating the surface relative transform during allocation, and notifying the callbacks if it changed since last time. Each widget adds itself as a listener to its parent widget, thus will be triggered if a parents surface relative transform changes.
515 lines
19 KiB
C
515 lines
19 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __GTK_WIDGET_PRIVATE_H__
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#define __GTK_WIDGET_PRIVATE_H__
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#include "gtkwidget.h"
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#include "gtkactionmuxerprivate.h"
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#include "gtkcontainer.h"
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#include "gtkcsstypesprivate.h"
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#include "gtkeventcontroller.h"
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#include "gtklistlistmodelprivate.h"
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#include "gtkrootprivate.h"
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#include "gtksizerequestcacheprivate.h"
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#include "gtkwindowprivate.h"
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#include "gtkgesture.h"
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#include "gsk/gskrendernodeprivate.h"
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G_BEGIN_DECLS
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typedef gboolean (*GtkSurfaceTransformChangedCallback) (GtkWidget *widget,
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const graphene_matrix_t *surface_transform,
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gpointer user_data);
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#define GTK_STATE_FLAGS_BITS 14
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struct _GtkWidgetPrivate
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{
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/* The state of the widget. Needs to be able to hold all GtkStateFlags bits
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* (defined in "gtkenums.h").
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*/
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guint state_flags : GTK_STATE_FLAGS_BITS;
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guint direction : 2;
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#ifdef G_ENABLE_DEBUG
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guint highlight_resize : 1;
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#endif
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guint in_destruction : 1;
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guint no_surface : 1;
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guint no_surface_set : 1;
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guint realized : 1;
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guint mapped : 1;
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guint visible : 1;
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guint sensitive : 1;
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guint can_focus : 1;
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guint has_focus : 1;
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guint focus_on_click : 1;
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guint can_default : 1;
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guint has_default : 1;
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guint receives_default : 1;
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guint has_grab : 1;
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guint shadowed : 1;
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guint child_visible : 1;
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guint multidevice : 1;
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guint can_target : 1;
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/* Queue-resize related flags */
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guint resize_needed : 1; /* queue_resize() has been called but no get_preferred_size() yet */
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guint alloc_needed : 1; /* this widget needs a size_allocate() call */
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guint alloc_needed_on_child : 1; /* 0 or more children - or this widget - need a size_allocate() call */
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/* Queue-draw related flags */
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guint draw_needed : 1;
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/* Expand-related flags */
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guint need_compute_expand : 1; /* Need to recompute computed_[hv]_expand */
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guint computed_hexpand : 1; /* computed results (composite of child flags) */
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guint computed_vexpand : 1;
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guint hexpand : 1; /* application-forced expand */
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guint vexpand : 1;
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guint hexpand_set : 1; /* whether to use application-forced */
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guint vexpand_set : 1; /* instead of computing from children */
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guint has_tooltip : 1;
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/* SizeGroup related flags */
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guint have_size_groups : 1;
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/* Alignment */
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guint halign : 4;
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guint valign : 4;
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GtkOverflow overflow;
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guint8 alpha;
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guint8 user_alpha;
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#ifdef G_ENABLE_CONSISTENCY_CHECKS
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/* Number of gtk_widget_push_verify_invariants () */
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guint8 verifying_invariants_count;
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#endif
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int width_request;
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int height_request;
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GtkBorder margin;
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/* Animations and other things to update on clock ticks */
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guint clock_tick_id;
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GList *tick_callbacks;
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/* Surface relative transform updates callbacks */
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guint parent_surface_transform_changed_id;
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GtkWidget *parent_surface_transform_changed_parent;
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gulong parent_changed_handler_id;
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GList *surface_transform_changed_callbacks;
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gboolean cached_surface_transform_valid;
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graphene_matrix_t cached_surface_transform;
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/* The widget's name. If the widget does not have a name
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* (the name is NULL), then its name (as returned by
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* "gtk_widget_get_name") is its class's name.
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* Among other things, the widget name is used to determine
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* the style to use for a widget.
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*/
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gchar *name;
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/* The root this widget belongs to or %NULL if widget is not
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* rooted or is a #GtkRoot itself.
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*/
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GtkRoot *root;
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/* The list of attached windows to this widget.
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* We keep a list in order to call reset_style to all of them,
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* recursively.
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*/
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GList *attached_windows;
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/* The style for the widget. The style contains the
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* colors the widget should be drawn in for each state
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* along with graphics contexts used to draw with and
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* the font to use for text.
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*/
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GtkCssNode *cssnode;
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GtkStyleContext *context;
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/* The widget's allocated size */
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GskTransform *allocated_transform;
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int allocated_width;
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int allocated_height;
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gint allocated_size_baseline;
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GskTransform *transform;
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int width;
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int height;
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int baseline;
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/* The widget's requested sizes */
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SizeRequestCache requests;
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/* The render node we draw or %NULL if not yet created.*/
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GskRenderNode *render_node;
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/* The layout manager, or %NULL */
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GtkLayoutManager *layout_manager;
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GSList *paintables;
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/* The widget's surface or its parent surface if it does
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* not have a surface. (Which will be indicated by the
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* no_surface field being set).
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*/
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GdkSurface *surface;
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GList *event_controllers;
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AtkObject *accessible;
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/* Widget tree */
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GtkWidget *parent;
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GtkWidget *prev_sibling;
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GtkWidget *next_sibling;
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GtkWidget *first_child;
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GtkWidget *last_child;
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/* only created on-demand */
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GtkListListModel *children_observer;
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GtkListListModel *controller_observer;
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GtkWidget *focus_child;
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/* Pointer cursor */
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GdkCursor *cursor;
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};
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GtkCssNode * gtk_widget_get_css_node (GtkWidget *widget);
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void _gtk_widget_set_visible_flag (GtkWidget *widget,
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gboolean visible);
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gboolean _gtk_widget_get_shadowed (GtkWidget *widget);
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void _gtk_widget_set_shadowed (GtkWidget *widget,
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gboolean shadowed);
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gboolean _gtk_widget_get_alloc_needed (GtkWidget *widget);
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gboolean gtk_widget_needs_allocate (GtkWidget *widget);
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void gtk_widget_ensure_resize (GtkWidget *widget);
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void gtk_widget_ensure_allocate (GtkWidget *widget);
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void _gtk_widget_scale_changed (GtkWidget *widget);
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void _gtk_widget_add_sizegroup (GtkWidget *widget,
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gpointer group);
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void _gtk_widget_remove_sizegroup (GtkWidget *widget,
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gpointer group);
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GSList *_gtk_widget_get_sizegroups (GtkWidget *widget);
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void _gtk_widget_add_attached_window (GtkWidget *widget,
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GtkWindow *window);
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void _gtk_widget_remove_attached_window (GtkWidget *widget,
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GtkWindow *window);
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void _gtk_widget_get_preferred_size_and_baseline(GtkWidget *widget,
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GtkRequisition *minimum_size,
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GtkRequisition *natural_size,
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gint *minimum_baseline,
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gint *natural_baseline);
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const gchar* _gtk_widget_get_accel_path (GtkWidget *widget,
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gboolean *locked);
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AtkObject * _gtk_widget_peek_accessible (GtkWidget *widget);
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void _gtk_widget_set_has_default (GtkWidget *widget,
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gboolean has_default);
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void _gtk_widget_set_has_grab (GtkWidget *widget,
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gboolean has_grab);
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void _gtk_widget_grab_notify (GtkWidget *widget,
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gboolean was_grabbed);
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void _gtk_widget_propagate_display_changed (GtkWidget *widget,
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GdkDisplay *previous_display);
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void _gtk_widget_set_device_surface (GtkWidget *widget,
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GdkDevice *device,
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GdkSurface *pointer_window);
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GdkSurface * _gtk_widget_get_device_surface (GtkWidget *widget,
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GdkDevice *device);
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GList * _gtk_widget_list_devices (GtkWidget *widget);
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void gtk_synthesize_crossing_events (GtkRoot *toplevel,
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GtkWidget *from,
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GtkWidget *to,
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GdkEvent *event,
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GdkCrossingMode mode);
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void _gtk_widget_synthesize_crossing (GtkWidget *from,
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GtkWidget *to,
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GdkDevice *device,
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GdkCrossingMode mode);
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void _gtk_widget_buildable_finish_accelerator (GtkWidget *widget,
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GtkWidget *toplevel,
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gpointer user_data);
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GtkStyleContext * _gtk_widget_peek_style_context (GtkWidget *widget);
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typedef gboolean (*GtkCapturedEventHandler) (GtkWidget *widget, GdkEvent *event);
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void _gtk_widget_set_captured_event_handler (GtkWidget *widget,
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GtkCapturedEventHandler handler);
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gboolean _gtk_widget_captured_event (GtkWidget *widget,
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const GdkEvent *event);
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GtkWidgetPath * _gtk_widget_create_path (GtkWidget *widget);
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void gtk_widget_clear_path (GtkWidget *widget);
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void _gtk_widget_style_context_invalidated (GtkWidget *widget);
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void _gtk_widget_update_parent_muxer (GtkWidget *widget);
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GtkActionMuxer * _gtk_widget_get_action_muxer (GtkWidget *widget,
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gboolean create);
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gboolean _gtk_widget_consumes_motion (GtkWidget *widget,
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GdkEventSequence *sequence);
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gboolean gtk_widget_has_tick_callback (GtkWidget *widget);
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void gtk_widget_set_csd_input_shape (GtkWidget *widget,
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const cairo_region_t *region);
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gboolean gtk_widget_has_size_request (GtkWidget *widget);
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void gtk_widget_reset_controllers (GtkWidget *widget);
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gboolean gtk_widget_query_tooltip (GtkWidget *widget,
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gint x,
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gint y,
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gboolean keyboard_mode,
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GtkTooltip *tooltip);
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void gtk_widget_render (GtkWidget *widget,
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GdkSurface *surface,
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const cairo_region_t *region);
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void gtk_widget_snapshot (GtkWidget *widget,
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GtkSnapshot *snapshot);
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void gtk_widget_adjust_size_request (GtkWidget *widget,
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GtkOrientation orientation,
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gint *minimum_size,
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gint *natural_size);
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void gtk_widget_adjust_size_allocation (GtkWidget *widget,
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GtkOrientation orientation,
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gint *minimum_size,
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gint *natural_size,
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gint *allocated_pos,
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gint *allocated_size);
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void gtk_widget_adjust_baseline_request (GtkWidget *widget,
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gint *minimum_baseline,
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gint *natural_baseline);
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void gtk_widget_forall (GtkWidget *widget,
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GtkCallback callback,
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gpointer user_data);
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void gtk_widget_focus_sort (GtkWidget *widget,
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GtkDirectionType direction,
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GPtrArray *focus_order);
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gboolean gtk_widget_focus_move (GtkWidget *widget,
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GtkDirectionType direction);
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void gtk_widget_set_has_focus (GtkWidget *widget,
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gboolean has_focus);
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void gtk_widget_get_surface_allocation (GtkWidget *widget,
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GtkAllocation *allocation);
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GtkWidget * gtk_widget_common_ancestor (GtkWidget *widget_a,
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GtkWidget *widget_b);
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void gtk_widget_cancel_event_sequence (GtkWidget *widget,
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GtkGesture *gesture,
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GdkEventSequence *sequence,
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GtkEventSequenceState state);
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gboolean gtk_widget_run_controllers (GtkWidget *widget,
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const GdkEvent *event,
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GtkPropagationPhase phase);
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guint gtk_widget_add_surface_transform_changed_callback (GtkWidget *widget,
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GtkSurfaceTransformChangedCallback callback,
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gpointer user_data,
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GDestroyNotify notify);
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void gtk_widget_remove_surface_transform_changed_callback (GtkWidget *widget,
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guint id);
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/* inline getters */
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static inline GtkWidget *
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_gtk_widget_get_parent (GtkWidget *widget)
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{
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return widget->priv->parent;
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}
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static inline gboolean
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_gtk_widget_get_visible (GtkWidget *widget)
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{
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return widget->priv->visible;
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}
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static inline gboolean
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_gtk_widget_get_child_visible (GtkWidget *widget)
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{
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return widget->priv->child_visible;
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}
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static inline gboolean
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_gtk_widget_get_mapped (GtkWidget *widget)
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{
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return widget->priv->mapped;
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}
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static inline gboolean
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_gtk_widget_is_drawable (GtkWidget *widget)
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{
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return widget->priv->visible && widget->priv->mapped;
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}
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static inline gboolean
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_gtk_widget_get_has_surface (GtkWidget *widget)
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{
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return !widget->priv->no_surface;
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}
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static inline gboolean
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_gtk_widget_get_realized (GtkWidget *widget)
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{
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return widget->priv->realized;
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}
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static inline gboolean
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_gtk_widget_is_toplevel (GtkWidget *widget)
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{
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return GTK_IS_ROOT (widget);
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}
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static inline GtkStateFlags
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_gtk_widget_get_state_flags (GtkWidget *widget)
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{
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return widget->priv->state_flags;
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}
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extern GtkTextDirection gtk_default_direction;
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static inline GtkTextDirection
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_gtk_widget_get_direction (GtkWidget *widget)
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{
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if (widget->priv->direction == GTK_TEXT_DIR_NONE)
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return gtk_default_direction;
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else
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return widget->priv->direction;
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}
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static inline GtkWidget *
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_gtk_widget_get_toplevel (GtkWidget *widget)
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{
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while (widget->priv->parent)
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widget = widget->priv->parent;
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return widget;
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}
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static inline GtkRoot *
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_gtk_widget_get_root (GtkWidget *widget)
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{
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return widget->priv->root;
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}
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static inline GdkDisplay *
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_gtk_widget_get_display (GtkWidget *widget)
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{
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GtkRoot *root = _gtk_widget_get_root (widget);
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if (root == NULL)
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return gdk_display_get_default ();
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return gtk_root_get_display (root);
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}
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static inline GtkStyleContext *
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_gtk_widget_get_style_context (GtkWidget *widget)
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{
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if (G_LIKELY (widget->priv->context))
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return widget->priv->context;
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return gtk_widget_get_style_context (widget);
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}
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static inline gpointer
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_gtk_widget_peek_request_cache (GtkWidget *widget)
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{
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return &widget->priv->requests;
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}
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static inline GdkSurface *
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_gtk_widget_get_surface (GtkWidget *widget)
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{
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return widget->priv->surface;
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}
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static inline GtkWidget *
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_gtk_widget_get_prev_sibling (GtkWidget *widget)
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{
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return widget->priv->prev_sibling;
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}
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static inline GtkWidget *
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_gtk_widget_get_next_sibling (GtkWidget *widget)
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{
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return widget->priv->next_sibling;
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}
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static inline GtkWidget *
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_gtk_widget_get_first_child (GtkWidget *widget)
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{
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return widget->priv->first_child;
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}
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static inline GtkWidget *
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_gtk_widget_get_last_child (GtkWidget *widget)
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{
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return widget->priv->last_child;
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}
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static inline gboolean
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_gtk_widget_is_sensitive (GtkWidget *widget)
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{
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return !(widget->priv->state_flags & GTK_STATE_FLAG_INSENSITIVE);
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}
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G_END_DECLS
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#endif /* __GTK_WIDGET_PRIVATE_H__ */
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