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mutter/clutter/x11/clutter-x11-texture-pixmap.c
Robert Bragg 19b8622983 Optimize culling by doing culling in eye-coordinates 
This implements a variation of frustum culling whereby we convert screen
space clip rectangles into eye space mini-frustums so that we don't have
to repeatedly transform actor paint-volumes all the way into screen
coordinates to perform culling, we just have to apply the modelview
transform and then determine each points distance from the planes that
make up the clip frustum.

By avoiding the projective transform, perspective divide and viewport
scale for each point culled this makes culling much cheaper.
2011-03-07 13:26:20 +00:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2007 OpenedHand
* Copyright (C) 2010 Intel Corporation.
*
* 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/>.
*
* Authors:
* Johan Bilien <johan.bilien@nokia.com>
* Neil Roberts <neil@linux.intel.com>
*/
/**
* SECTION:clutter-x11-texture-pixmap
* @Title: ClutterX11TexturePixmap
* @short_description: A texture which displays the content of an X Pixmap.
*
* #ClutterX11TexturePixmap is a class for displaying the content of an
* X Pixmap as a ClutterActor. Used together with the X Composite extension,
* it allows to display the content of X Windows inside Clutter.
*
* The class uses the GLX_EXT_texture_from_pixmap OpenGL extension
* (http://people.freedesktop.org/~davidr/GLX_EXT_texture_from_pixmap.txt)
* if available
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "clutter-x11-texture-pixmap.h"
#include "clutter-x11.h"
#include "clutter-backend-x11.h"
#include "clutter-actor-private.h"
#include "clutter-marshal.h"
#include "clutter-paint-volume-private.h"
#include "clutter-private.h"
#include "cogl/cogl.h"
#include "cogl/winsys/cogl-texture-pixmap-x11.h"
#include <X11/extensions/Xdamage.h>
#if HAVE_XCOMPOSITE
#include <X11/extensions/Xcomposite.h>
#endif
enum
{
PROP_PIXMAP = 1,
PROP_PIXMAP_WIDTH,
PROP_PIXMAP_HEIGHT,
PROP_DEPTH,
PROP_AUTO,
PROP_WINDOW,
PROP_WINDOW_REDIRECT_AUTOMATIC,
PROP_WINDOW_MAPPED,
PROP_DESTROYED,
PROP_WINDOW_X,
PROP_WINDOW_Y,
PROP_WINDOW_OVERRIDE_REDIRECT
};
enum
{
UPDATE_AREA,
QUEUE_DAMAGE_REDRAW,
/* FIXME: Pixmap lost signal? */
LAST_SIGNAL
};
static ClutterX11FilterReturn
on_x_event_filter (XEvent *xev, ClutterEvent *cev, gpointer data);
static void
clutter_x11_texture_pixmap_update_area_real (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height);
static void
clutter_x11_texture_pixmap_sync_window_internal (ClutterX11TexturePixmap *texture,
int x,
int y,
int width,
int height,
gboolean override_redirect);
static void
clutter_x11_texture_pixmap_set_mapped (ClutterX11TexturePixmap *texture, gboolean mapped);
static void
clutter_x11_texture_pixmap_destroyed (ClutterX11TexturePixmap *texture);
static guint signals[LAST_SIGNAL] = { 0, };
struct _ClutterX11TexturePixmapPrivate
{
Window window;
Pixmap pixmap;
guint pixmap_width, pixmap_height;
guint depth;
Damage damage;
gint window_x, window_y;
gint window_width, window_height;
guint window_redirect_automatic : 1;
/* FIXME: this is inconsistently either whether the window is mapped or whether
* it is viewable, and isn't updated correctly. */
guint window_mapped : 1;
guint destroyed : 1;
guint owns_pixmap : 1;
guint override_redirect : 1;
guint automatic_updates : 1;
};
static int _damage_event_base = 0;
G_DEFINE_TYPE (ClutterX11TexturePixmap,
clutter_x11_texture_pixmap,
CLUTTER_TYPE_TEXTURE);
static gboolean
check_extensions (ClutterX11TexturePixmap *texture)
{
int damage_error;
Display *dpy;
if (_damage_event_base)
return TRUE;
dpy = clutter_x11_get_default_display();
if (!XDamageQueryExtension (dpy, &_damage_event_base, &damage_error))
{
g_warning ("No Damage extension");
return FALSE;
}
return TRUE;
}
static void
process_damage_event (ClutterX11TexturePixmap *texture,
XDamageNotifyEvent *damage_event)
{
/* Cogl will deal with updating the texture and subtracting from the
damage region so we only need to queue a redraw */
g_signal_emit (texture, signals[QUEUE_DAMAGE_REDRAW],
0,
damage_event->area.x,
damage_event->area.y,
damage_event->area.width,
damage_event->area.height);
}
static ClutterX11FilterReturn
on_x_event_filter (XEvent *xev, ClutterEvent *cev, gpointer data)
{
ClutterX11TexturePixmap *texture;
ClutterX11TexturePixmapPrivate *priv;
texture = CLUTTER_X11_TEXTURE_PIXMAP (data);
g_return_val_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture), \
CLUTTER_X11_FILTER_CONTINUE);
priv = texture->priv;
if (xev->type == _damage_event_base + XDamageNotify)
{
XDamageNotifyEvent *dev = (XDamageNotifyEvent*)xev;
if (dev->damage != priv->damage)
return CLUTTER_X11_FILTER_CONTINUE;
process_damage_event (texture, dev);
}
return CLUTTER_X11_FILTER_CONTINUE;
}
static ClutterX11FilterReturn
on_x_event_filter_too (XEvent *xev, ClutterEvent *cev, gpointer data)
{
ClutterX11TexturePixmap *texture;
ClutterX11TexturePixmapPrivate *priv;
texture = CLUTTER_X11_TEXTURE_PIXMAP (data);
g_return_val_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture), \
CLUTTER_X11_FILTER_CONTINUE);
priv = texture->priv;
if (xev->xany.window != priv->window)
return CLUTTER_X11_FILTER_CONTINUE;
switch (xev->type) {
case MapNotify:
clutter_x11_texture_pixmap_sync_window_internal (texture,
priv->window_x,
priv->window_y,
priv->window_width,
priv->window_height,
priv->override_redirect);
break;
case ConfigureNotify:
clutter_x11_texture_pixmap_sync_window_internal (texture,
xev->xconfigure.x,
xev->xconfigure.y,
xev->xconfigure.width,
xev->xconfigure.height,
xev->xconfigure.override_redirect);
break;
case UnmapNotify:
clutter_x11_texture_pixmap_set_mapped (texture, FALSE);
break;
case DestroyNotify:
clutter_x11_texture_pixmap_destroyed (texture);
break;
default:
break;
}
return CLUTTER_X11_FILTER_CONTINUE;
}
static void
update_pixmap_damage_object (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv = texture->priv;
CoglHandle cogl_texture;
/* If we already have a CoglTexturePixmapX11 then update its
damage object */
cogl_texture =
clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture));
if (cogl_texture && cogl_is_texture_pixmap_x11 (cogl_texture))
{
if (priv->damage)
{
const CoglTexturePixmapX11ReportLevel report_level =
COGL_TEXTURE_PIXMAP_X11_DAMAGE_BOUNDING_BOX;
cogl_texture_pixmap_x11_set_damage_object (cogl_texture,
priv->damage,
report_level);
}
else
cogl_texture_pixmap_x11_set_damage_object (cogl_texture, 0, 0);
}
}
static void
create_damage_resources (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv;
Display *dpy;
priv = texture->priv;
dpy = clutter_x11_get_default_display();
if (!priv->pixmap)
return;
clutter_x11_trap_x_errors ();
priv->damage = XDamageCreate (dpy,
priv->pixmap,
XDamageReportBoundingBox);
/* Errors here might occur if the window is already destroyed, we
* simply skip processing damage and assume that the texture pixmap
* will be cleaned up by the app when it gets a DestroyNotify.
*/
XSync (dpy, FALSE);
clutter_x11_untrap_x_errors ();
if (priv->damage)
{
clutter_x11_add_filter (on_x_event_filter, (gpointer)texture);
update_pixmap_damage_object (texture);
}
}
static void
free_damage_resources (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv;
Display *dpy;
priv = texture->priv;
dpy = clutter_x11_get_default_display();
if (priv->damage)
{
clutter_x11_trap_x_errors ();
XDamageDestroy (dpy, priv->damage);
XSync (dpy, FALSE);
clutter_x11_untrap_x_errors ();
priv->damage = None;
clutter_x11_remove_filter (on_x_event_filter, (gpointer)texture);
update_pixmap_damage_object (texture);
}
}
static gboolean
clutter_x11_texture_pixmap_get_paint_volume (ClutterActor *self,
ClutterPaintVolume *volume)
{
return clutter_paint_volume_set_from_allocation (volume, self);
}
static void
clutter_x11_texture_pixmap_real_queue_damage_redraw (
ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height)
{
ClutterX11TexturePixmapPrivate *priv = texture->priv;
ClutterActor *self = CLUTTER_ACTOR (texture);
ClutterActorBox allocation;
float scale_x;
float scale_y;
ClutterVertex origin;
ClutterPaintVolume clip;
/* NB: clutter_actor_queue_clipped_redraw expects a box in the actor's
* coordinate space so we need to convert from pixmap coordinates to
* actor coordinates...
*/
/* Calling clutter_actor_get_allocation_box() is enormously expensive
* if the actor has an out-of-date allocation, since it triggers
* a full redraw. clutter_actor_queue_clipped_redraw() would redraw
* the whole stage anyways in that case, so just go ahead and do
* it here.
*/
if (!clutter_actor_has_allocation (self))
{
clutter_actor_queue_redraw (self);
return;
}
if (priv->pixmap_width == 0 || priv->pixmap_height == 0)
return;
clutter_actor_get_allocation_box (self, &allocation);
scale_x = (allocation.x2 - allocation.x1) / priv->pixmap_width;
scale_y = (allocation.y2 - allocation.y1) / priv->pixmap_height;
_clutter_paint_volume_init_static (&clip, self);
origin.x = x * scale_x;
origin.y = y * scale_y;
origin.z = 0;
clutter_paint_volume_set_origin (&clip, &origin);
clutter_paint_volume_set_width (&clip, width * scale_x);
clutter_paint_volume_set_height (&clip, height * scale_y);
_clutter_actor_queue_redraw_with_clip (self, 0, &clip);
clutter_paint_volume_free (&clip);
}
static void
clutter_x11_texture_pixmap_init (ClutterX11TexturePixmap *self)
{
self->priv =
G_TYPE_INSTANCE_GET_PRIVATE (self,
CLUTTER_X11_TYPE_TEXTURE_PIXMAP,
ClutterX11TexturePixmapPrivate);
if (!check_extensions (self))
{
/* FIMXE: means display lacks needed extensions for at least auto.
* - a _can_autoupdate() method ?
*/
}
self->priv->automatic_updates = FALSE;
self->priv->damage = None;
self->priv->window = None;
self->priv->pixmap = None;
self->priv->pixmap_height = 0;
self->priv->pixmap_width = 0;
self->priv->window_redirect_automatic = TRUE;
self->priv->window_mapped = FALSE;
self->priv->destroyed = FALSE;
self->priv->override_redirect = FALSE;
self->priv->window_x = 0;
self->priv->window_y = 0;
}
static void
clutter_x11_texture_pixmap_dispose (GObject *object)
{
ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (object);
free_damage_resources (texture);
clutter_x11_remove_filter (on_x_event_filter_too, (gpointer)texture);
clutter_x11_texture_pixmap_set_pixmap (texture, None);
G_OBJECT_CLASS (clutter_x11_texture_pixmap_parent_class)->dispose (object);
}
static void
clutter_x11_texture_pixmap_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (object);
ClutterX11TexturePixmapPrivate *priv = texture->priv;
switch (prop_id)
{
case PROP_PIXMAP:
clutter_x11_texture_pixmap_set_pixmap (texture,
g_value_get_ulong (value));
break;
case PROP_AUTO:
clutter_x11_texture_pixmap_set_automatic (texture,
g_value_get_boolean (value));
break;
case PROP_WINDOW:
clutter_x11_texture_pixmap_set_window (texture,
g_value_get_ulong (value),
priv->window_redirect_automatic);
break;
case PROP_WINDOW_REDIRECT_AUTOMATIC:
{
gboolean new;
new = g_value_get_boolean (value);
/* Change the update mode.. */
if (new != priv->window_redirect_automatic && priv->window)
clutter_x11_texture_pixmap_set_window (texture, priv->window, new);
priv->window_redirect_automatic = new;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_x11_texture_pixmap_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (object);
ClutterX11TexturePixmapPrivate *priv = texture->priv;
switch (prop_id)
{
case PROP_PIXMAP:
g_value_set_ulong (value, priv->pixmap);
break;
case PROP_PIXMAP_WIDTH:
g_value_set_uint (value, priv->pixmap_width);
break;
case PROP_PIXMAP_HEIGHT:
g_value_set_uint (value, priv->pixmap_height);
break;
case PROP_DEPTH:
g_value_set_uint (value, priv->depth);
break;
case PROP_AUTO:
g_value_set_boolean (value, priv->automatic_updates);
break;
case PROP_WINDOW:
g_value_set_ulong (value, priv->window);
break;
case PROP_WINDOW_REDIRECT_AUTOMATIC:
g_value_set_boolean (value, priv->window_redirect_automatic);
break;
case PROP_WINDOW_MAPPED:
g_value_set_boolean (value, priv->window_mapped);
break;
case PROP_DESTROYED:
g_value_set_boolean (value, priv->destroyed);
break;
case PROP_WINDOW_X:
g_value_set_int (value, priv->window_x);
break;
case PROP_WINDOW_Y:
g_value_set_int (value, priv->window_y);
break;
case PROP_WINDOW_OVERRIDE_REDIRECT:
g_value_set_boolean (value, priv->override_redirect);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_x11_texture_pixmap_class_init (ClutterX11TexturePixmapClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
GParamSpec *pspec;
ClutterBackend *default_backend;
g_type_class_add_private (klass, sizeof (ClutterX11TexturePixmapPrivate));
actor_class->get_paint_volume = clutter_x11_texture_pixmap_get_paint_volume;
object_class->dispose = clutter_x11_texture_pixmap_dispose;
object_class->set_property = clutter_x11_texture_pixmap_set_property;
object_class->get_property = clutter_x11_texture_pixmap_get_property;
klass->update_area = clutter_x11_texture_pixmap_update_area_real;
pspec = g_param_spec_ulong ("pixmap",
P_("Pixmap"),
P_("The X11 Pixmap to be bound"),
0, G_MAXULONG,
None,
G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_PIXMAP, pspec);
pspec = g_param_spec_uint ("pixmap-width",
P_("Pixmap width"),
P_("The width of the pixmap bound to this texture"),
0, G_MAXUINT,
0,
G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_PIXMAP_WIDTH, pspec);
pspec = g_param_spec_uint ("pixmap-height",
P_("Pixmap height"),
P_("The height of the pixmap bound to this texture"),
0, G_MAXUINT,
0,
G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_PIXMAP_HEIGHT, pspec);
pspec = g_param_spec_uint ("pixmap-depth",
P_("Pixmap Depth"),
P_("The depth (in number of bits) of the pixmap bound to this texture"),
0, G_MAXUINT,
0,
G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_DEPTH, pspec);
pspec = g_param_spec_boolean ("automatic-updates",
P_("Automatic Updates"),
P_("If the texture should be kept in "
"sync with any pixmap changes."),
FALSE,
G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_AUTO, pspec);
pspec = g_param_spec_ulong ("window",
P_("Window"),
P_("The X11 Window to be bound"),
0, G_MAXULONG,
None,
G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_WINDOW, pspec);
pspec = g_param_spec_boolean ("window-redirect-automatic",
P_("Window Redirect Automatic"),
P_("If composite window redirects are set to "
"Automatic (or Manual if false)"),
TRUE,
G_PARAM_READWRITE);
g_object_class_install_property (object_class,
PROP_WINDOW_REDIRECT_AUTOMATIC, pspec);
pspec = g_param_spec_boolean ("window-mapped",
P_("Window Mapped"),
P_("If window is mapped"),
FALSE,
G_PARAM_READABLE);
g_object_class_install_property (object_class,
PROP_WINDOW_MAPPED, pspec);
pspec = g_param_spec_boolean ("destroyed",
P_("Destroyed"),
P_("If window has been destroyed"),
FALSE,
G_PARAM_READABLE);
g_object_class_install_property (object_class,
PROP_DESTROYED, pspec);
pspec = g_param_spec_int ("window-x",
P_("Window X"),
P_("X position of window on screen according to X11"),
G_MININT, G_MAXINT, 0, G_PARAM_READABLE);
g_object_class_install_property (object_class,
PROP_WINDOW_X, pspec);
pspec = g_param_spec_int ("window-y",
P_("Window Y"),
P_("Y position of window on screen according to X11"),
G_MININT, G_MAXINT, 0, G_PARAM_READABLE);
g_object_class_install_property (object_class,
PROP_WINDOW_Y, pspec);
pspec = g_param_spec_boolean ("window-override-redirect",
P_("Window Override Redirect"),
P_("If this is an override-redirect window"),
FALSE,
G_PARAM_READABLE);
g_object_class_install_property (object_class,
PROP_WINDOW_OVERRIDE_REDIRECT, pspec);
/**
* ClutterX11TexturePixmap::update-area:
* @texture: the object which received the signal
*
* The ::update-area signal is emitted to ask the texture to update its
* content from its source pixmap.
*
* Since: 0.8
*/
signals[UPDATE_AREA] =
g_signal_new (g_intern_static_string ("update-area"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (ClutterX11TexturePixmapClass, \
update_area),
NULL, NULL,
_clutter_marshal_VOID__INT_INT_INT_INT,
G_TYPE_NONE, 4,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT);
/**
* ClutterX11TexturePixmap::queue-damage-redraw
* @texture: the object which received the signal
* @x: The top left x position of the damage region
* @y: The top left y position of the damage region
* @width: The width of the damage region
* @height: The height of the damage region
*
* ::queue-damage-redraw is emitted to notify that some sub-region
* of the texture has been changed (either by an automatic damage
* update or by an explicit call to
* clutter_x11_texture_pixmap_update_area). This usually means a
* redraw needs to be queued for the actor.
*
* The default handler will queue a clipped redraw in response to
* the damage, using the assumption that the pixmap is being painted
* to a rectangle covering the transformed allocation of the actor.
* If you sub-class and change the paint method so this isn't true
* then you must also provide your own damage signal handler to
* queue a redraw that blocks this default behaviour.
*
* Since: 1.2
*/
signals[QUEUE_DAMAGE_REDRAW] =
g_signal_new (g_intern_static_string ("queue-damage-redraw"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_FIRST,
0,
NULL, NULL,
_clutter_marshal_VOID__INT_INT_INT_INT,
G_TYPE_NONE, 4,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT,
G_TYPE_INT);
g_signal_override_class_handler ("queue-damage-redraw",
CLUTTER_X11_TYPE_TEXTURE_PIXMAP,
G_CALLBACK (clutter_x11_texture_pixmap_real_queue_damage_redraw));
default_backend = clutter_get_default_backend ();
if (!CLUTTER_IS_BACKEND_X11 (default_backend))
{
g_critical ("ClutterX11TexturePixmap instantiated with a "
"non-X11 backend");
return;
}
}
static void
clutter_x11_texture_pixmap_update_area_real (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height)
{
CoglHandle cogl_texture;
cogl_texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (texture));
if (cogl_texture)
cogl_texture_pixmap_x11_update_area (cogl_texture, x, y, width, height);
}
/**
* clutter_x11_texture_pixmap_new:
*
* Creates a new #ClutterX11TexturePixmap which can be used to display the
* contents of an X11 Pixmap inside a Clutter scene graph
*
* Return value: A new #ClutterX11TexturePixmap
*
* Since: 0.8
*/
ClutterActor *
clutter_x11_texture_pixmap_new (void)
{
ClutterActor *actor;
actor = g_object_new (CLUTTER_X11_TYPE_TEXTURE_PIXMAP, NULL);
return actor;
}
/**
* clutter_x11_texture_pixmap_new_with_pixmap:
* @pixmap: the X Pixmap to which this texture should be bound
*
* Creates a new #ClutterX11TexturePixmap for @pixmap
*
* Return value: A new #ClutterX11TexturePixmap bound to the given X Pixmap
*
* Since: 0.8
*/
ClutterActor *
clutter_x11_texture_pixmap_new_with_pixmap (Pixmap pixmap)
{
ClutterActor *actor;
actor = g_object_new (CLUTTER_X11_TYPE_TEXTURE_PIXMAP,
"pixmap", pixmap,
NULL);
return actor;
}
/**
* clutter_x11_texture_pixmap_new_with_window:
* @window: the X window to which this texture should be bound
*
* Creates a new #ClutterX11TexturePixmap for @window
*
* Return value: A new #ClutterX11TexturePixmap bound to the given X window.
*
* Since: 0.8
**/
ClutterActor *
clutter_x11_texture_pixmap_new_with_window (Window window)
{
ClutterActor *actor;
actor = g_object_new (CLUTTER_X11_TYPE_TEXTURE_PIXMAP,
"window", window,
NULL);
return actor;
}
/**
* clutter_x11_texture_pixmap_set_pixmap:
* @texture: the texture to bind
* @pixmap: the X Pixmap to which the texture should be bound
*
* Sets the X Pixmap to which the texture should be bound.
*
* Since: 0.8
*/
void
clutter_x11_texture_pixmap_set_pixmap (ClutterX11TexturePixmap *texture,
Pixmap pixmap)
{
Window root;
int x, y;
unsigned int width, height, border_width, depth;
Status status = 0;
gboolean new_pixmap = FALSE, new_pixmap_width = FALSE;
gboolean new_pixmap_height = FALSE, new_pixmap_depth = FALSE;
CoglHandle material;
CoglHandle cogl_texture;
ClutterX11TexturePixmapPrivate *priv;
g_return_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture));
priv = texture->priv;
/* Get rid of the existing Cogl texture early because it may try to
use the pixmap which we might destroy */
material = clutter_texture_get_cogl_material (CLUTTER_TEXTURE (texture));
if (material)
cogl_material_set_layer (material, 0, COGL_INVALID_HANDLE);
if (pixmap != None)
{
clutter_x11_trap_x_errors ();
status = XGetGeometry (clutter_x11_get_default_display(),
(Drawable)pixmap,
&root,
&x,
&y,
&width,
&height,
&border_width,
&depth);
if (clutter_x11_untrap_x_errors () || status == 0)
{
g_warning ("Unable to query pixmap: %lx", pixmap);
pixmap = None;
width = height = depth = 0;
}
}
else
{
width = height = depth = 0;
}
if (priv->pixmap != pixmap)
{
if (priv->pixmap && priv->owns_pixmap)
XFreePixmap (clutter_x11_get_default_display (), priv->pixmap);
priv->pixmap = pixmap;
new_pixmap = TRUE;
/* The damage object is created on the pixmap, so it needs to be
* recreated with a change in pixmap.
*/
if (priv->automatic_updates)
{
free_damage_resources (texture);
create_damage_resources (texture);
}
}
if (priv->pixmap_width != width)
{
priv->pixmap_width = width;
new_pixmap_width = TRUE;
}
if (priv->pixmap_height != height)
{
priv->pixmap_height = height;
new_pixmap_height = TRUE;
}
if (priv->depth != depth)
{
priv->depth = depth;
new_pixmap_depth = TRUE;
}
/* NB: We defer sending the signals until updating all the
* above members so the values are all available to the
* signal handlers. */
g_object_ref (texture);
if (new_pixmap)
g_object_notify (G_OBJECT (texture), "pixmap");
if (new_pixmap_width)
g_object_notify (G_OBJECT (texture), "pixmap-width");
if (new_pixmap_height)
g_object_notify (G_OBJECT (texture), "pixmap-height");
if (new_pixmap_depth)
g_object_notify (G_OBJECT (texture), "pixmap-depth");
if (pixmap)
{
cogl_texture = cogl_texture_pixmap_x11_new (pixmap, FALSE);
clutter_texture_set_cogl_texture (CLUTTER_TEXTURE (texture),
cogl_texture);
cogl_handle_unref (cogl_texture);
update_pixmap_damage_object (texture);
}
/*
* Keep ref until here in case a notify causes removal from the scene; can't
* lower the notifies because glx's notify handler needs to run before
* update_area
*/
g_object_unref (texture);
}
/**
* clutter_x11_texture_pixmap_set_window:
* @texture: the texture to bind
* @window: the X window to which the texture should be bound
* @automatic: %TRUE for automatic window updates, %FALSE for manual.
*
* Sets up a suitable pixmap for the window, using the composite and damage
* extensions if possible, and then calls
* clutter_x11_texture_pixmap_set_pixmap().
*
* If you want to display a window in a #ClutterTexture, you probably want
* this function, or its older sister, clutter_glx_texture_pixmap_set_window().
*
* This function has no effect unless the XComposite extension is available.
*
* Since: 0.8
*/
void
clutter_x11_texture_pixmap_set_window (ClutterX11TexturePixmap *texture,
Window window,
gboolean automatic)
{
ClutterX11TexturePixmapPrivate *priv;
XWindowAttributes attr;
Display *dpy = clutter_x11_get_default_display ();
g_return_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture));
if (!clutter_x11_has_composite_extension ())
return;
#if HAVE_XCOMPOSITE
priv = texture->priv;
if (priv->window == window && automatic == priv->window_redirect_automatic)
return;
if (priv->window)
{
clutter_x11_remove_filter (on_x_event_filter_too, (gpointer)texture);
clutter_x11_trap_x_errors ();
XCompositeUnredirectWindow(clutter_x11_get_default_display (),
priv->window,
priv->window_redirect_automatic ?
CompositeRedirectAutomatic : CompositeRedirectManual);
XSync (clutter_x11_get_default_display (), False);
clutter_x11_untrap_x_errors ();
clutter_x11_texture_pixmap_set_pixmap (texture, None);
}
priv->window = window;
priv->window_redirect_automatic = automatic;
priv->window_mapped = FALSE;
priv->destroyed = FALSE;
if (window == None)
return;
clutter_x11_trap_x_errors ();
{
if (!XGetWindowAttributes (dpy, window, &attr))
{
XSync (dpy, False);
clutter_x11_untrap_x_errors ();
g_warning ("bad window 0x%x", (guint32)window);
priv->window = None;
return;
}
XCompositeRedirectWindow
(dpy,
window,
automatic ?
CompositeRedirectAutomatic : CompositeRedirectManual);
XSync (dpy, False);
}
clutter_x11_untrap_x_errors ();
XSelectInput (dpy, priv->window,
attr.your_event_mask | StructureNotifyMask);
clutter_x11_add_filter (on_x_event_filter_too, (gpointer)texture);
g_object_ref (texture);
g_object_notify (G_OBJECT (texture), "window");
clutter_x11_texture_pixmap_set_mapped (texture,
attr.map_state == IsViewable);
clutter_x11_texture_pixmap_sync_window_internal (texture,
attr.x, attr.y,
attr.width, attr.height,
attr.override_redirect);
g_object_unref (texture);
#endif /* HAVE_XCOMPOSITE */
}
static void
clutter_x11_texture_pixmap_sync_window_internal (ClutterX11TexturePixmap *texture,
int x,
int y,
int width,
int height,
gboolean override_redirect)
{
ClutterX11TexturePixmapPrivate *priv;
Pixmap pixmap = None;
gboolean mapped = FALSE;
gboolean notify_x = FALSE;
gboolean notify_y = FALSE;
gboolean notify_override_redirect = FALSE;
priv = texture->priv;
if (priv->destroyed)
return;
notify_x = x != priv->window_x;
notify_y = y != priv->window_y;
notify_override_redirect = override_redirect != priv->override_redirect;
priv->window_x = x;
priv->window_y = y;
priv->window_width = width;
priv->window_height = height;
priv->override_redirect = override_redirect;
if (!clutter_x11_has_composite_extension())
{
/* FIXME: this should just be an error, this is unlikely to work worth anything */
clutter_x11_texture_pixmap_set_pixmap (texture, priv->window);
return;
}
if (priv->pixmap == None || width != priv->pixmap_width || height != priv->pixmap_height)
{
/* Note that we're checking the size from the event against the size we obtained
* from the last XCompositeNameWindowPixmap/XGetGeometry pair. This will always
* end up right in the end, but we can have a series like:
*
* Window sized to 100x100
* Window sized to 110x110
* Window sized to 120x120
* Configure received for 100x100 - NameWindowPixmap
* Configure received for 110x110 - NameWindowPixmap
* Configure received for 120x120 - last size OK
*
* Where we NameWindowPixmap several times in a row. (Using pixmap_width/pixmap_height
* rather than window_width/window_height saves the last one.)
*/
Display *dpy = clutter_x11_get_default_display ();
/* NB: It's only valid to name a pixmap if the window is viewable.
*
* We don't explicitly check this though since there would be a race
* between checking and naming unless we use a server grab which is
* undesireable.
*
* Instead we gracefully handle any error with naming the pixmap.
*/
clutter_x11_trap_x_errors ();
pixmap = XCompositeNameWindowPixmap (dpy, priv->window);
/* Possible improvement: combine with the XGetGeometry in
* clutter_x11_texture_pixmap_set_pixmap() */
XSync(dpy, False);
if (clutter_x11_untrap_x_errors ())
pixmap = None;
}
g_object_ref (texture); /* guard against unparent */
g_object_freeze_notify (G_OBJECT (texture));
/* FIXME: mapped is always FALSE */
clutter_x11_texture_pixmap_set_mapped (texture, mapped);
if (pixmap)
{
clutter_x11_texture_pixmap_set_pixmap (texture, pixmap);
priv->owns_pixmap = TRUE;
}
if (notify_override_redirect)
g_object_notify (G_OBJECT (texture), "window-override-redirect");
if (notify_x)
g_object_notify (G_OBJECT (texture), "window-x");
if (notify_y)
g_object_notify (G_OBJECT (texture), "window-y");
g_object_thaw_notify (G_OBJECT (texture));
g_object_unref (texture);
}
/**
* clutter_x11_texture_pixmap_sync_window:
* @texture: the texture to bind
*
* Resets the texture's pixmap from its window, perhaps in response to the
* pixmap's invalidation as the window changed size.
*
* Since: 0.8
*/
void
clutter_x11_texture_pixmap_sync_window (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv;
g_return_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture));
priv = texture->priv;
if (priv->destroyed)
return;
if (priv->window)
{
XWindowAttributes attr;
Display *dpy = clutter_x11_get_default_display ();
Status status;
clutter_x11_trap_x_errors ();
status = XGetWindowAttributes (dpy, priv->window, &attr);
if (status != 0)
clutter_x11_texture_pixmap_sync_window_internal (texture,
attr.x, attr.y,
attr.width, attr.height,
attr.override_redirect);
clutter_x11_untrap_x_errors ();
}
}
static void
clutter_x11_texture_pixmap_set_mapped (ClutterX11TexturePixmap *texture,
gboolean mapped)
{
ClutterX11TexturePixmapPrivate *priv;
priv = texture->priv;
if (mapped != priv->window_mapped)
{
priv->window_mapped = mapped;
g_object_notify (G_OBJECT (texture), "window-mapped");
}
}
static void
clutter_x11_texture_pixmap_destroyed (ClutterX11TexturePixmap *texture)
{
ClutterX11TexturePixmapPrivate *priv;
priv = texture->priv;
if (!priv->destroyed)
{
priv->destroyed = TRUE;
g_object_notify (G_OBJECT (texture), "destroyed");
}
/*
* Don't set window to None, that would destroy the pixmap, which might still
* be useful e.g. for destroy animations -- app's responsibility.
*/
}
/**
* clutter_x11_texture_pixmap_update_area:
* @texture: The texture whose content shall be updated.
* @x: the X coordinate of the area to update
* @y: the Y coordinate of the area to update
* @width: the width of the area to update
* @height: the height of the area to update
*
* Performs the actual binding of texture to the current content of
* the pixmap. Can be called to update the texture if the pixmap
* content has changed.
*
* Since: 0.8
**/
void
clutter_x11_texture_pixmap_update_area (ClutterX11TexturePixmap *texture,
gint x,
gint y,
gint width,
gint height)
{
g_return_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture));
g_signal_emit (texture, signals[UPDATE_AREA], 0, x, y, width, height);
/* The default handler for the "queue-damage-redraw" signal is
* clutter_x11_texture_pixmap_real_queue_damage_redraw which will queue a
* clipped redraw. */
g_signal_emit (texture, signals[QUEUE_DAMAGE_REDRAW],
0, x, y, width, height);
}
/**
* clutter_x11_texture_pixmap_set_automatic:
* @texture: a #ClutterX11TexturePixmap
* @setting: %TRUE to enable automatic updates
*
* Enables or disables the automatic updates ot @texture in case the backing
* pixmap or window is damaged
*
* Since: 0.8
*/
void
clutter_x11_texture_pixmap_set_automatic (ClutterX11TexturePixmap *texture,
gboolean setting)
{
ClutterX11TexturePixmapPrivate *priv;
g_return_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture));
priv = texture->priv;
setting = !!setting;
if (setting == priv->automatic_updates)
return;
if (setting)
create_damage_resources (texture);
else
free_damage_resources (texture);
priv->automatic_updates = setting;
}
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