612 lines
19 KiB
C
612 lines
19 KiB
C
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/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Johan Bilien <johan.bilien@nokia.com>
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*
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* Copyright (C) 2007 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:clutter-x11-texture-pixmap
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* @short_description: A texture which displays the content of an X Pixmap.
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*
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* #ClutterX11TexturePixmap is a class for displaying the content of an
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* X Pixmap as a ClutterActor. Used together with the X Composite extension,
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* it allows to display the content of X Windows inside Clutter.
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*
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* The class uses the GLX_EXT_texture_from_pixmap OpenGL extension
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* (http://people.freedesktop.org/~davidr/GLX_EXT_texture_from_pixmap.txt)
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* if available
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "../clutter-marshal.h"
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#include "clutter-x11-texture-pixmap.h"
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#include "clutter-x11.h"
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#include "clutter-backend-x11.h"
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#include "cogl.h"
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enum
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{
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PROP_PIXMAP = 1,
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PROP_PIXMAP_WIDTH,
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PROP_PIXMAP_HEIGHT,
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PROP_DEPTH
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};
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enum
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{
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UPDATE_AREA,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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struct _ClutterX11TexturePixmapPrivate
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{
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Pixmap pixmap;
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guint pixmap_width, pixmap_height;
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guint depth;
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XImage *image;
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};
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static ClutterBackendX11 *backend = NULL;
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static void clutter_x11_texture_pixmap_class_init (ClutterX11TexturePixmapClass *klass);
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static void clutter_x11_texture_pixmap_init (ClutterX11TexturePixmap *self);
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static GObject *clutter_x11_texture_pixmap_constructor (GType type,
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guint n_construct_properties,
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GObjectConstructParam *construct_properties);
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static void clutter_x11_texture_pixmap_dispose (GObject *object);
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static void clutter_x11_texture_pixmap_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void clutter_x11_texture_pixmap_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void clutter_x11_texture_pixmap_realize (ClutterActor *actor);
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static void clutter_x11_texture_pixmap_update_area_real (ClutterX11TexturePixmap *texture,
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gint x,
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gint y,
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gint width,
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gint height);
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G_DEFINE_TYPE (ClutterX11TexturePixmap, clutter_x11_texture_pixmap, CLUTTER_TYPE_TEXTURE);
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static void
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clutter_x11_texture_pixmap_class_init (ClutterX11TexturePixmapClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
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GParamSpec *pspec;
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ClutterBackend *default_backend;
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g_type_class_add_private (klass, sizeof (ClutterX11TexturePixmapPrivate));
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object_class->constructor = clutter_x11_texture_pixmap_constructor;
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object_class->dispose = clutter_x11_texture_pixmap_dispose;
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object_class->set_property = clutter_x11_texture_pixmap_set_property;
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object_class->get_property = clutter_x11_texture_pixmap_get_property;
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actor_class->realize = clutter_x11_texture_pixmap_realize;
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klass->update_area = clutter_x11_texture_pixmap_update_area_real;
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pspec = g_param_spec_uint ("pixmap",
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"Pixmap",
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"The X Pixmap to which this texture will be bound",
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0, G_MAXINT,
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None,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
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g_object_class_install_property (object_class,
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PROP_PIXMAP,
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pspec);
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pspec = g_param_spec_uint ("pixmap-width",
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"Pixmap width",
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"The width of the "
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"pixmap bound to this texture",
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0, G_MAXUINT,
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0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
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g_object_class_install_property (object_class,
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PROP_PIXMAP_WIDTH,
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pspec);
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pspec = g_param_spec_uint ("pixmap-height",
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"Pixmap height",
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"The height of the "
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"pixmap bound to this texture",
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0, G_MAXUINT,
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0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
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g_object_class_install_property (object_class,
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PROP_PIXMAP_HEIGHT,
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pspec);
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pspec = g_param_spec_uint ("depth",
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"Depth",
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"The depth (in number of bits) of the "
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"pixmap bound to this texture",
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0, G_MAXUINT,
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0,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
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g_object_class_install_property (object_class,
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PROP_DEPTH,
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pspec);
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/**
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* ClutterX11TexturePixmap::update-area:
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* @texture: the object which received the signal
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*
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* The ::hide signal is emitted to ask the texture to update its
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* content from its source pixmap.
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*
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* Since: 0.8
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*/
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signals[UPDATE_AREA] =
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g_signal_new ("update-area",
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G_TYPE_FROM_CLASS (object_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (ClutterX11TexturePixmapClass, update_area),
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NULL, NULL,
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clutter_marshal_VOID__INT_INT_INT_INT,
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G_TYPE_NONE, 4,
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G_TYPE_INT,
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G_TYPE_INT,
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G_TYPE_INT,
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G_TYPE_INT);
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default_backend = clutter_get_default_backend ();
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if (!CLUTTER_IS_BACKEND_X11 (default_backend))
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{
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g_critical ("ClutterX11TexturePixmap instanciated with a "
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"non-X11 backend");
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return;
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}
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backend = (ClutterBackendX11 *)default_backend;
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}
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static void
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clutter_x11_texture_pixmap_init (ClutterX11TexturePixmap *self)
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{
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self->priv =
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G_TYPE_INSTANCE_GET_PRIVATE (self,
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CLUTTER_X11_TYPE_TEXTURE_PIXMAP,
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ClutterX11TexturePixmapPrivate);
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}
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static GObject *
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clutter_x11_texture_pixmap_constructor (GType type,
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guint n_construct_properties,
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GObjectConstructParam *construct_properties)
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{
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GObject *object = G_OBJECT_CLASS (clutter_x11_texture_pixmap_parent_class)->
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constructor (type, n_construct_properties, construct_properties);
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g_object_set (object,
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"sync-size", FALSE,
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NULL);
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return object;
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}
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static void
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clutter_x11_texture_pixmap_dispose (GObject *object)
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{
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ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (object);
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ClutterX11TexturePixmapPrivate *priv = texture->priv;
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if (priv->image)
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{
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XDestroyImage (priv->image);
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priv->image = NULL;
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}
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G_OBJECT_CLASS (clutter_x11_texture_pixmap_parent_class)->dispose (object);
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}
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static void
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clutter_x11_texture_pixmap_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (object);
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ClutterX11TexturePixmapPrivate *priv = texture->priv;
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switch (prop_id)
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{
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case PROP_PIXMAP:
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clutter_x11_texture_pixmap_set_pixmap (texture,
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g_value_get_uint (value),
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priv->pixmap_width,
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priv->pixmap_height,
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priv->depth);
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break;
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case PROP_PIXMAP_WIDTH:
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clutter_x11_texture_pixmap_set_pixmap (texture,
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priv->pixmap,
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g_value_get_uint (value),
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priv->pixmap_height,
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priv->depth);
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break;
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case PROP_PIXMAP_HEIGHT:
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clutter_x11_texture_pixmap_set_pixmap (texture,
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priv->pixmap,
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priv->pixmap_width,
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g_value_get_uint (value),
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priv->depth);
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break;
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case PROP_DEPTH:
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clutter_x11_texture_pixmap_set_pixmap (texture,
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priv->pixmap,
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priv->pixmap_width,
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priv->pixmap_height,
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g_value_get_uint (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_x11_texture_pixmap_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (object);
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ClutterX11TexturePixmapPrivate *priv = texture->priv;
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switch (prop_id)
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{
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case PROP_PIXMAP:
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g_value_set_uint (value, priv->pixmap);
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break;
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case PROP_PIXMAP_WIDTH:
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g_value_set_uint (value, priv->pixmap_width);
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break;
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case PROP_PIXMAP_HEIGHT:
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g_value_set_uint (value, priv->pixmap_height);
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break;
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case PROP_DEPTH:
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g_value_set_uint (value, priv->depth);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_x11_texture_pixmap_realize (ClutterActor *actor)
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{
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ClutterX11TexturePixmap *texture = CLUTTER_X11_TEXTURE_PIXMAP (actor);
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ClutterX11TexturePixmapPrivate *priv = texture->priv;
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CLUTTER_ACTOR_CLASS (clutter_x11_texture_pixmap_parent_class)->
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realize (actor);
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CLUTTER_ACTOR_SET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
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clutter_x11_texture_pixmap_update_area_real (texture,
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0, 0,
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priv->pixmap_width,
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priv->pixmap_height);
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}
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static void
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clutter_x11_texture_pixmap_update_area_real (ClutterX11TexturePixmap *texture,
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gint x,
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gint y,
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gint width,
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gint height)
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{
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ClutterX11TexturePixmapPrivate *priv;
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Display *dpy;
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XImage *image;
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guint *pixel, *l;
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GError *error = NULL;
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guint bytes_per_line;
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guint8 *data;
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gboolean data_allocated = FALSE;
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int err_code;
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if (!CLUTTER_ACTOR_IS_REALIZED (texture))
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return;
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priv = texture->priv;
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dpy = ((ClutterBackendX11 *)backend)->xdpy;
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clutter_x11_trap_x_errors ();
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if (!priv->image)
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priv->image = XGetImage (dpy,
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priv->pixmap,
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0, 0,
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priv->pixmap_width, priv->pixmap_height,
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AllPlanes,
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ZPixmap);
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else
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XGetSubImage (dpy,
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priv->pixmap,
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x, y,
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width, height,
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AllPlanes,
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ZPixmap,
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priv->image,
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x, y);
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XSync (dpy, FALSE);
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if ((err_code = clutter_x11_untrap_x_errors ()))
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return;
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image = priv->image;
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if (priv->depth == 24)
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{
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|
|
guint *first_line = (guint *)image->data + y * image->bytes_per_line / 4;
|
||
|
|
|
||
|
|
for (l = first_line;
|
||
|
|
l != (first_line + height * image->bytes_per_line / 4);
|
||
|
|
l = l + image->bytes_per_line / 4)
|
||
|
|
{
|
||
|
|
for (pixel = l + x; pixel != l + x + width; pixel ++)
|
||
|
|
{
|
||
|
|
((guint8 *)pixel)[3] = 0xFF;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
data = (guint8 *)first_line + x * 4;
|
||
|
|
bytes_per_line = image->bytes_per_line;
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (priv->depth == 16)
|
||
|
|
{
|
||
|
|
guint16 *p, *lp;
|
||
|
|
|
||
|
|
data = g_malloc (height * width * 4);
|
||
|
|
data_allocated = TRUE;
|
||
|
|
bytes_per_line = priv->pixmap_width * 4;
|
||
|
|
|
||
|
|
for (l = (guint *)data,
|
||
|
|
lp = (guint16 *)image->data + y * image->bytes_per_line / 2;
|
||
|
|
l != ((guint *)data + height * width);
|
||
|
|
l = l + width, lp = lp + image->bytes_per_line / 2)
|
||
|
|
{
|
||
|
|
for (pixel = l, p = lp + x; pixel != l + width; pixel ++, p++)
|
||
|
|
{
|
||
|
|
*pixel = 0xFF000000 |
|
||
|
|
(guint)((*p) & 0xf800) << 8 |
|
||
|
|
(guint)((*p) & 0x07e0) << 5 |
|
||
|
|
(guint)((*p) & 0x001f) << 3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
else if (priv->depth == 32)
|
||
|
|
{
|
||
|
|
bytes_per_line = image->bytes_per_line;
|
||
|
|
data = (guint8 *)image->data + y * bytes_per_line + x * 4;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (x != 0 || y != 0 ||
|
||
|
|
width != priv->pixmap_width || height != priv->pixmap_height)
|
||
|
|
clutter_texture_set_area_from_rgb_data (CLUTTER_TEXTURE (texture),
|
||
|
|
data,
|
||
|
|
TRUE,
|
||
|
|
x, y,
|
||
|
|
width, height,
|
||
|
|
bytes_per_line,
|
||
|
|
4,
|
||
|
|
CLUTTER_TEXTURE_RGB_FLAG_BGR,
|
||
|
|
&error);
|
||
|
|
else
|
||
|
|
clutter_texture_set_from_rgb_data (CLUTTER_TEXTURE (texture),
|
||
|
|
data,
|
||
|
|
TRUE,
|
||
|
|
width, height,
|
||
|
|
bytes_per_line,
|
||
|
|
4,
|
||
|
|
CLUTTER_TEXTURE_RGB_FLAG_BGR,
|
||
|
|
&error);
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
if (error)
|
||
|
|
{
|
||
|
|
g_warning ("Error when uploading from pixbuf: %s",
|
||
|
|
error->message);
|
||
|
|
g_error_free (error);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (data_allocated)
|
||
|
|
g_free (data);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* clutter_x11_texture_pixmap_new:
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* @width: the width of the X pixmap
|
||
|
|
* @height: the height of the X pixmap
|
||
|
|
* @depth: the depth of the X 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,
|
||
|
|
guint width,
|
||
|
|
guint height,
|
||
|
|
guint depth)
|
||
|
|
{
|
||
|
|
ClutterActor *actor;
|
||
|
|
|
||
|
|
actor = g_object_new (CLUTTER_X11_TYPE_TEXTURE_PIXMAP,
|
||
|
|
"pixmap", pixmap,
|
||
|
|
"pixmap-width", width,
|
||
|
|
"pixmap-height", height,
|
||
|
|
"depth", depth,
|
||
|
|
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
|
||
|
|
* @width: the Pixmap width
|
||
|
|
* @height: the Pixmap height
|
||
|
|
* @depth: the Pixmap depth, in number of bits
|
||
|
|
*
|
||
|
|
* 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,
|
||
|
|
guint width,
|
||
|
|
guint height,
|
||
|
|
guint depth)
|
||
|
|
{
|
||
|
|
ClutterX11TexturePixmapPrivate *priv;
|
||
|
|
|
||
|
|
g_return_if_fail (CLUTTER_X11_IS_TEXTURE_PIXMAP (texture));
|
||
|
|
|
||
|
|
priv = texture->priv;
|
||
|
|
|
||
|
|
if (priv->pixmap != pixmap)
|
||
|
|
{
|
||
|
|
priv->pixmap = pixmap;
|
||
|
|
|
||
|
|
g_object_notify (G_OBJECT (texture), "pixmap");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (priv->pixmap_width != width)
|
||
|
|
{
|
||
|
|
priv->pixmap_width = width;
|
||
|
|
|
||
|
|
g_object_notify (G_OBJECT (texture), "pixmap-width");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (priv->pixmap_height != height)
|
||
|
|
{
|
||
|
|
priv->pixmap_height = height;
|
||
|
|
|
||
|
|
g_object_notify (G_OBJECT (texture), "pixmap-height");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (priv->depth != depth)
|
||
|
|
{
|
||
|
|
priv->depth = depth;
|
||
|
|
|
||
|
|
g_object_notify (G_OBJECT (texture), "depth");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (priv->depth != 0 &&
|
||
|
|
priv->pixmap != None &&
|
||
|
|
priv->pixmap_width != 0 &&
|
||
|
|
priv->pixmap_height != 0)
|
||
|
|
{
|
||
|
|
if (priv->image)
|
||
|
|
{
|
||
|
|
XDestroyImage (priv->image);
|
||
|
|
priv->image = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (CLUTTER_ACTOR_IS_REALIZED (texture))
|
||
|
|
clutter_x11_texture_pixmap_update_area (texture,
|
||
|
|
0, 0,
|
||
|
|
priv->pixmap_width,
|
||
|
|
priv->pixmap_height);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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);
|
||
|
|
}
|