forked from AuroraMiddleware/gtk
d17aeec08c
This avoids, at least, needless chatter with the compositor and the X server in X11's case. https://bugzilla.gnome.org/show_bug.cgi?id=786469
564 lines
19 KiB
C
564 lines
19 KiB
C
/* GDK - The GIMP Drawing Kit
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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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/* Uninstalled header defining types and functions internal to GDK */
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#ifndef __GDK_INTERNALS_H__
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#define __GDK_INTERNALS_H__
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#include <gio/gio.h>
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#include "gdkwindowimpl.h"
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#include "gdkdisplay.h"
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#include "gdkprivate.h"
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G_BEGIN_DECLS
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/**********************
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* General Facilities *
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**********************/
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/* Debugging support */
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typedef struct _GdkColorInfo GdkColorInfo;
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typedef struct _GdkEventFilter GdkEventFilter;
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typedef struct _GdkClientFilter GdkClientFilter;
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typedef enum {
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GDK_COLOR_WRITEABLE = 1 << 0
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} GdkColorInfoFlags;
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struct _GdkColorInfo
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{
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GdkColorInfoFlags flags;
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guint ref_count;
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};
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typedef enum {
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GDK_EVENT_FILTER_REMOVED = 1 << 0
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} GdkEventFilterFlags;
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struct _GdkEventFilter {
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GdkFilterFunc function;
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gpointer data;
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GdkEventFilterFlags flags;
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guint ref_count;
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};
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struct _GdkClientFilter {
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GdkAtom type;
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GdkFilterFunc function;
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gpointer data;
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};
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typedef enum {
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GDK_DEBUG_MISC = 1 << 0,
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GDK_DEBUG_EVENTS = 1 << 1,
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GDK_DEBUG_DND = 1 << 2,
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GDK_DEBUG_XIM = 1 << 3,
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GDK_DEBUG_NOGRABS = 1 << 4,
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GDK_DEBUG_INPUT = 1 << 5,
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GDK_DEBUG_CURSOR = 1 << 6,
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GDK_DEBUG_MULTIHEAD = 1 << 7,
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GDK_DEBUG_XINERAMA = 1 << 8,
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GDK_DEBUG_DRAW = 1 << 9,
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GDK_DEBUG_EVENTLOOP = 1 << 10,
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GDK_DEBUG_FRAMES = 1 << 11,
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GDK_DEBUG_SETTINGS = 1 << 12,
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GDK_DEBUG_OPENGL = 1 << 13,
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} GdkDebugFlag;
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typedef enum {
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GDK_RENDERING_MODE_SIMILAR = 0,
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GDK_RENDERING_MODE_IMAGE,
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GDK_RENDERING_MODE_RECORDING
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} GdkRenderingMode;
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typedef enum {
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GDK_GL_DISABLE = 1 << 0,
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GDK_GL_ALWAYS = 1 << 1,
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GDK_GL_SOFTWARE_DRAW_GL = 1 << 2,
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GDK_GL_SOFTWARE_DRAW_SURFACE = 1 << 3,
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GDK_GL_TEXTURE_RECTANGLE = 1 << 4,
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GDK_GL_LEGACY = 1 << 5,
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GDK_GL_GLES = 1 << 6
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} GdkGLFlags;
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extern GList *_gdk_default_filters;
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extern GdkWindow *_gdk_parent_root;
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extern guint _gdk_debug_flags;
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extern guint _gdk_gl_flags;
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extern GdkRenderingMode _gdk_rendering_mode;
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extern gboolean _gdk_debug_updates;
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#ifdef G_ENABLE_DEBUG
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#define GDK_DEBUG_CHECK(type) G_UNLIKELY (_gdk_debug_flags & GDK_DEBUG_##type)
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#define GDK_NOTE(type,action) G_STMT_START { \
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if (GDK_DEBUG_CHECK (type)) \
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{ action; }; } G_STMT_END
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#else /* !G_ENABLE_DEBUG */
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#define GDK_DEBUG_CHECK(type) 0
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#define GDK_NOTE(type,action)
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#endif /* G_ENABLE_DEBUG */
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/* Arg parsing */
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typedef enum
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{
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GDK_ARG_STRING,
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GDK_ARG_INT,
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GDK_ARG_BOOL,
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GDK_ARG_NOBOOL,
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GDK_ARG_CALLBACK
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} GdkArgType;
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typedef struct _GdkArgContext GdkArgContext;
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typedef struct _GdkArgDesc GdkArgDesc;
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typedef void (*GdkArgFunc) (const char *name, const char *arg, gpointer data);
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struct _GdkArgContext
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{
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GPtrArray *tables;
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gpointer cb_data;
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};
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struct _GdkArgDesc
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{
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const char *name;
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GdkArgType type;
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gpointer location;
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GdkArgFunc callback;
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};
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/* Event handling */
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typedef struct _GdkEventPrivate GdkEventPrivate;
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typedef enum
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{
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/* Following flag is set for events on the event queue during
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* translation and cleared afterwards.
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*/
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GDK_EVENT_PENDING = 1 << 0,
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/* The following flag is set for:
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* 1) touch events emulating pointer events
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* 2) pointer events being emulated by a touch sequence.
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*/
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GDK_EVENT_POINTER_EMULATED = 1 << 1,
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/* When we are ready to draw a frame, we pause event delivery,
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* mark all events in the queue with this flag, and deliver
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* only those events until we finish the frame.
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*/
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GDK_EVENT_FLUSHED = 1 << 2
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} GdkEventFlags;
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struct _GdkEventPrivate
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{
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GdkEvent event;
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guint flags;
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GdkScreen *screen;
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gpointer windowing_data;
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GdkDevice *device;
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GdkDevice *source_device;
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GdkSeat *seat;
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GdkDeviceTool *tool;
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guint16 key_scancode;
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};
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typedef struct _GdkWindowPaint GdkWindowPaint;
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struct _GdkWindow
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{
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GObject parent_instance;
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GdkWindowImpl *impl; /* window-system-specific delegate object */
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GdkWindow *parent;
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GdkWindow *transient_for;
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GdkVisual *visual;
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gpointer user_data;
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gint x;
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gint y;
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GdkEventMask event_mask;
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guint8 window_type;
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guint8 depth;
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guint8 resize_count;
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gint8 toplevel_window_type;
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GList *filters;
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GList *children;
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GList children_list_node;
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GList *native_children;
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cairo_pattern_t *background;
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/* The paint logic here is a bit complex because of our intermingling of
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* cairo and GL. Let's first go over the cairo-alone case:
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*
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* 1) gdk_window_begin_paint_region() is called with an update region. If
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* the backend wants it, we redirect drawing to a temporary surface
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* sized the same as the update region and set `surface_needs_composite`
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* to TRUE. Otherwise, we paint directly onto the real server-side window.
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*
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* 2) Things paint with cairo using gdk_cairo_create().
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*
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* 3) When everything is painted, the user calls gdk_window_end_paint().
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* If there was a temporary surface, this is composited back onto the
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* real backing surface in the appropriate places.
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*
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* This is similar to double buffering, except we only have partial surfaces
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* of undefined contents, and instead of swapping between two buffers, we
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* create a new temporary buffer every time.
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*
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* When we add GL to the mix, we have this instead:
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*
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* 1) gdk_window_begin_paint_region() is called with an update region like
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* before. We always redirect cairo drawing to a temporary surface when
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* GL is enabled.
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*
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* 2) Things paint with cairo using gdk_cairo_create(). Whenever
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* something paints, it calls gdk_window_mark_paint_from_clip() to mark
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* which regions it has painted in software. We'll learn what this does
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* soon.
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*
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* 3) Something paints with GL and uses gdk_cairo_draw_from_gl() to
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* composite back into the scene. We paint this onto the backing
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* store for the window *immediately* by using GL, rather than
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* painting to the temporary surface, and keep track of the area that
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* we've painted in `flushed_region`.
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*
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* 4) Something paints using software again. It calls
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* gdk_window_mark_paint_from_clip(), which subtracts the region it
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* has painted from `flushed_region` and adds the region to
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* `needs_blended_region`.
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*
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* 5) Something paints using GL again, using gdk_cairo_draw_from_gl().
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* It paints directly to the backing store, removes the region it
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* painted from `needs_blended_region`, and adds to `flushed_region`.
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*
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* 6) gdk_window_end_paint() is called. It composites the temporary surface
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* back to the window, using GL, except it doesn't bother copying
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* `flushed_region`, and when it paints `needs_blended_region`, it also
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* turns on GL blending.
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*
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* That means that at any point in time, we have three regions:
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*
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* * `region` - This is the original invalidated region and is never
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* touched.
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*
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* * `flushed_region` - This is the portion of `region` that has GL
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* contents that have been painted directly to the window, and
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* doesn't have any cairo drawing painted over it.
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*
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* * `needs_blended_region` - This is the portion of `region` that
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* GL contents that have part cairo drawing painted over it.
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* gdk_window_end_paint() will draw this region using blending.
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*
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* `flushed_region` and `needs_blended_region` never intersect, and the
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* rest of `region` that isn't covered by either is the "opaque region",
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* which is any area of cairo drawing that didn't ever intersect with GL.
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* We can paint these from GL without turning on blending.
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**/
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struct {
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/* The temporary surface that we're painting to. This will be composited
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* back into the window when we call end_paint. This is our poor-man's
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* way of doing double buffering. */
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cairo_surface_t *surface;
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cairo_region_t *region;
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cairo_region_t *flushed_region;
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cairo_region_t *need_blend_region;
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gboolean surface_needs_composite;
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gboolean use_gl;
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} current_paint;
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GdkGLContext *gl_paint_context;
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cairo_region_t *update_area;
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guint update_freeze_count;
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/* This is the update_area that was in effect when the current expose
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started. It may be smaller than the expose area if we'e painting
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more than we have to, but it represents the "true" damage. */
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cairo_region_t *active_update_area;
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/* We store the old expose areas to support buffer-age optimizations */
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cairo_region_t *old_updated_area[2];
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GdkWindowState old_state;
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GdkWindowState state;
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guint8 alpha;
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guint8 fullscreen_mode;
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guint input_only : 1;
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guint pass_through : 1;
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guint modal_hint : 1;
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guint composited : 1;
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guint has_alpha_background : 1;
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guint destroyed : 2;
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guint accept_focus : 1;
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guint focus_on_map : 1;
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guint shaped : 1;
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guint support_multidevice : 1;
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guint synthesize_crossing_event_queued : 1;
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guint effective_visibility : 2;
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guint visibility : 2; /* The visibility wrt the toplevel (i.e. based on clip_region) */
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guint native_visibility : 2; /* the native visibility of a impl windows */
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guint viewable : 1; /* mapped and all parents mapped */
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guint applied_shape : 1;
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guint in_update : 1;
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guint geometry_dirty : 1;
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guint event_compression : 1;
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guint frame_clock_events_paused : 1;
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/* The GdkWindow that has the impl, ref:ed if another window.
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* This ref is required to keep the wrapper of the impl window alive
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* for as long as any GdkWindow references the impl. */
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GdkWindow *impl_window;
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guint update_and_descendants_freeze_count;
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gint abs_x, abs_y; /* Absolute offset in impl */
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gint width, height;
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gint shadow_top;
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gint shadow_left;
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gint shadow_right;
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gint shadow_bottom;
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guint num_offscreen_children;
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/* The clip region is the part of the window, in window coordinates
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that is fully or partially (i.e. semi transparently) visible in
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the window hierarchy from the toplevel and down */
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cairo_region_t *clip_region;
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GdkCursor *cursor;
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GHashTable *device_cursor;
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cairo_region_t *shape;
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cairo_region_t *input_shape;
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GList *devices_inside;
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GHashTable *device_events;
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GHashTable *source_event_masks;
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gulong device_added_handler_id;
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gulong device_changed_handler_id;
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GdkFrameClock *frame_clock; /* NULL to use from parent or default */
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GdkWindowInvalidateHandlerFunc invalidate_handler;
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GdkDrawingContext *drawing_context;
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cairo_region_t *opaque_region;
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};
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#define GDK_WINDOW_TYPE(d) ((((GdkWindow *)(d)))->window_type)
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#define GDK_WINDOW_DESTROYED(d) (((GdkWindow *)(d))->destroyed)
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extern gchar *_gdk_display_name;
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extern gint _gdk_screen_number;
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extern gchar *_gdk_display_arg_name;
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extern gboolean _gdk_disable_multidevice;
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GdkEvent* _gdk_event_unqueue (GdkDisplay *display);
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void _gdk_event_filter_unref (GdkWindow *window,
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GdkEventFilter *filter);
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void gdk_event_set_pointer_emulated (GdkEvent *event,
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gboolean emulated);
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void gdk_event_set_scancode (GdkEvent *event,
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guint16 scancode);
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void gdk_event_set_seat (GdkEvent *event,
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GdkSeat *seat);
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void _gdk_event_emit (GdkEvent *event);
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GList* _gdk_event_queue_find_first (GdkDisplay *display);
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void _gdk_event_queue_remove_link (GdkDisplay *display,
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GList *node);
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GList* _gdk_event_queue_append (GdkDisplay *display,
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GdkEvent *event);
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GList* _gdk_event_queue_insert_after (GdkDisplay *display,
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GdkEvent *after_event,
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GdkEvent *event);
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GList* _gdk_event_queue_insert_before(GdkDisplay *display,
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GdkEvent *after_event,
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GdkEvent *event);
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void _gdk_event_queue_handle_motion_compression (GdkDisplay *display);
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void _gdk_event_queue_flush (GdkDisplay *display);
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void _gdk_event_button_generate (GdkDisplay *display,
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GdkEvent *event);
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void _gdk_windowing_event_data_copy (const GdkEvent *src,
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GdkEvent *dst);
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void _gdk_windowing_event_data_free (GdkEvent *event);
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void _gdk_set_window_state (GdkWindow *window,
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GdkWindowState new_state);
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gboolean _gdk_cairo_surface_extents (cairo_surface_t *surface,
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GdkRectangle *extents);
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void gdk_gl_texture_from_surface (cairo_surface_t *surface,
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cairo_region_t *region);
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typedef struct {
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float x1, y1, x2, y2;
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float u1, v1, u2, v2;
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} GdkTexturedQuad;
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void gdk_gl_texture_quads (GdkGLContext *paint_context,
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guint texture_target,
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int n_quads,
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GdkTexturedQuad *quads,
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gboolean flip_colors);
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void gdk_cairo_surface_mark_as_direct (cairo_surface_t *surface,
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GdkWindow *window);
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cairo_region_t *gdk_cairo_region_from_clip (cairo_t *cr);
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void gdk_cairo_set_drawing_context (cairo_t *cr,
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GdkDrawingContext *context);
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/*************************************
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* Interfaces used by windowing code *
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*************************************/
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cairo_surface_t *
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_gdk_window_ref_cairo_surface (GdkWindow *window);
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void _gdk_window_destroy (GdkWindow *window,
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gboolean foreign_destroy);
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void _gdk_window_clear_update_area (GdkWindow *window);
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void _gdk_window_update_size (GdkWindow *window);
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gboolean _gdk_window_update_viewable (GdkWindow *window);
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GdkGLContext * gdk_window_get_paint_gl_context (GdkWindow *window,
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GError **error);
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void gdk_window_get_unscaled_size (GdkWindow *window,
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int *unscaled_width,
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int *unscaled_height);
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GdkDrawingContext *gdk_window_get_drawing_context (GdkWindow *window);
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cairo_region_t *gdk_window_get_current_paint_region (GdkWindow *window);
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void _gdk_window_process_updates_recurse (GdkWindow *window,
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cairo_region_t *expose_region);
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void _gdk_screen_set_resolution (GdkScreen *screen,
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gdouble dpi);
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void _gdk_screen_close (GdkScreen *screen);
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/*****************************************
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* Interfaces provided by windowing code *
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*****************************************/
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/* Font/string functions implemented in module-specific code */
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void _gdk_cursor_destroy (GdkCursor *cursor);
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extern const GOptionEntry _gdk_windowing_args[];
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void _gdk_windowing_got_event (GdkDisplay *display,
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GList *event_link,
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GdkEvent *event,
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gulong serial);
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#define GDK_WINDOW_IS_MAPPED(window) (((window)->state & GDK_WINDOW_STATE_WITHDRAWN) == 0)
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void _gdk_window_invalidate_for_expose (GdkWindow *window,
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cairo_region_t *region);
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GdkWindow * _gdk_window_find_child_at (GdkWindow *window,
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double x, double y);
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GdkWindow * _gdk_window_find_descendant_at (GdkWindow *toplevel,
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double x, double y,
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double *found_x,
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double *found_y);
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GdkEvent * _gdk_make_event (GdkWindow *window,
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GdkEventType type,
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GdkEvent *event_in_queue,
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gboolean before_event);
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gboolean _gdk_window_event_parent_of (GdkWindow *parent,
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GdkWindow *child);
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void _gdk_synthesize_crossing_events (GdkDisplay *display,
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GdkWindow *src,
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GdkWindow *dest,
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GdkDevice *device,
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GdkDevice *source_device,
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GdkCrossingMode mode,
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gdouble toplevel_x,
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gdouble toplevel_y,
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GdkModifierType mask,
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guint32 time_,
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GdkEvent *event_in_queue,
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gulong serial,
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gboolean non_linear);
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void _gdk_display_set_window_under_pointer (GdkDisplay *display,
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GdkDevice *device,
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GdkWindow *window);
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void _gdk_synthesize_crossing_events_for_geometry_change (GdkWindow *changed_window);
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gboolean _gdk_window_has_impl (GdkWindow *window);
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GdkWindow * _gdk_window_get_impl_window (GdkWindow *window);
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/*****************************
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* offscreen window routines *
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*****************************/
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GType gdk_offscreen_window_get_type (void);
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void _gdk_offscreen_window_new (GdkWindow *window,
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GdkWindowAttr *attributes,
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gint attributes_mask);
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cairo_surface_t * _gdk_offscreen_window_create_surface (GdkWindow *window,
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gint width,
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gint height);
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G_END_DECLS
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#endif /* __GDK_INTERNALS_H__ */
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