vcs.maemo.org Git - clutter-gtk/blob - clutter-gtk/gtk-clutter-embed.c

   1 /* gtk-clutter-embed.c: Embeddable ClutterStage
   2  *
   3  * Copyright (C) 2007 OpenedHand
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library. If not see <http://www.fsf.org/licensing>.
  17  *
  18  * Authors:
  19  *   Iain Holmes  <iain@openedhand.com>
  20  *   Emmanuele Bassi  <ebassi@openedhand.com>
  21  */
  22
  23 /**
  24  * SECTION:gtk-clutter-embed
  25  * @short_description: Widget for embedding a Clutter scene
  26  *
  27  * #GtkClutterEmbed is a GTK+ widget embedding a #ClutterStage. Using
  28  * a #GtkClutterEmbed widget is possible to build, show and interact with
  29  * a scene built using Clutter inside a GTK+ application.
  30  *
  31  * Since: 0.6
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include "config.h"
  36 #endif
  37
  38 #include <glib-object.h>
  39
  40 #include <clutter/clutter-main.h>
  41 #include <clutter/clutter-stage.h>
  42
  43 #include <gdk/gdk.h>
  44 #include <gdk/gdkx.h>
  45 #include <clutter/clutter-x11.h>
  46
  47 #include "gtk-clutter-embed.h"
  48
  49 G_DEFINE_TYPE (GtkClutterEmbed, gtk_clutter_embed, GTK_TYPE_WIDGET);
  50
  51 #define GTK_CLUTTER_EMBED_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_CLUTTER_EMBED, GtkClutterEmbedPrivate))
  52
  53 struct _GtkClutterEmbedPrivate
  54 {
  55   ClutterActor *stage;
  56 };
  57
  58 static void
  59 gtk_clutter_embed_dispose (GObject *gobject)
  60 {
  61   G_OBJECT_CLASS (gtk_clutter_embed_parent_class)->dispose (gobject);
  62 }
  63
  64 static void
  65 gtk_clutter_embed_realize (GtkWidget *widget)
  66 {
  67   GtkClutterEmbedPrivate *priv = GTK_CLUTTER_EMBED (widget)->priv;
  68   GdkWindowAttr attributes;
  69   int attributes_mask;
  70
  71   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
  72
  73   attributes.window_type = GDK_WINDOW_CHILD;
  74   attributes.x = widget->allocation.x;
  75   attributes.y = widget->allocation.y;
  76   attributes.width = widget->allocation.width;
  77   attributes.height = widget->allocation.height;
  78   attributes.wclass = GDK_INPUT_OUTPUT;
  79   attributes.visual = gtk_widget_get_visual (widget);
  80   attributes.colormap = gtk_widget_get_colormap (widget);
  81   attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
  82
  83   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
  84
  85   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
  86                                    &attributes,
  87                                    attributes_mask);
  88   gdk_window_set_user_data (widget->window, widget);
  89
  90   widget->style = gtk_style_attach (widget->style, widget->window);
  91   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
  92
  93   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
  94
  95   clutter_x11_set_stage_foreign (CLUTTER_STAGE (priv->stage),
  96                                  GDK_WINDOW_XID (widget->window));
  97
  98   /* allow a redraw here */
  99   clutter_actor_queue_redraw (priv->stage);
 100 }
 101
 102 static void
 103 gtk_clutter_embed_size_allocate (GtkWidget     *widget,
 104                                  GtkAllocation *allocation)
 105 {
 106   GtkClutterEmbedPrivate *priv = GTK_CLUTTER_EMBED (widget)->priv;
 107
 108   clutter_actor_set_size (priv->stage,
 109                           allocation->width,
 110                           allocation->height);
 111
 112   if (CLUTTER_ACTOR_IS_VISIBLE (priv->stage))
 113     clutter_actor_queue_redraw (priv->stage);
 114
 115   GTK_WIDGET_CLASS (gtk_clutter_embed_parent_class)->size_allocate (widget, allocation);
 116 }
 117
 118 static gboolean
 119 gtk_clutter_embed_button_event (GtkWidget      *widget,
 120                                 GdkEventButton *event)
 121 {
 122   ClutterEvent cevent = { 0, };
 123
 124   if (event->type == GDK_BUTTON_PRESS ||
 125       event->type == GDK_2BUTTON_PRESS ||
 126       event->type == GDK_3BUTTON_PRESS)
 127     cevent.type = cevent.button.type = CLUTTER_BUTTON_PRESS;
 128   else if (event->type == GDK_BUTTON_RELEASE)
 129     cevent.type = cevent.button.type = CLUTTER_BUTTON_RELEASE;
 130   else
 131     return FALSE;
 132
 133   cevent.button.x = event->x;
 134   cevent.button.y = event->y;
 135   cevent.button.time = event->time;
 136   cevent.button.click_count =
 137     (event->type == GDK_BUTTON_PRESS ? 1
 138                                      : (event->type == GDK_2BUTTON_PRESS ? 2
 139                                                                          : 3));
 140   cevent.button.modifier_state = event->state;
 141   cevent.button.button = event->button;
 142
 143   clutter_do_event (&cevent);
 144
 145   return TRUE;
 146 }
 147
 148 static gboolean
 149 gtk_clutter_embed_key_event (GtkWidget   *widget,
 150                              GdkEventKey *event)
 151 {
 152   ClutterEvent cevent = { 0, };
 153
 154   if (event->type == GDK_KEY_PRESS)
 155     cevent.type = cevent.key.type = CLUTTER_KEY_PRESS;
 156   else if (event->type == GDK_KEY_RELEASE)
 157     cevent.type = cevent.key.type = CLUTTER_KEY_RELEASE;
 158   else
 159     return FALSE;
 160
 161   cevent.key.time = event->time;
 162   cevent.key.modifier_state = event->state;
 163   cevent.key.keyval = event->keyval;
 164   cevent.key.hardware_keycode = event->hardware_keycode;
 165
 166   clutter_do_event (&cevent);
 167
 168   return TRUE;
 169 }
 170
 171 static void
 172 gtk_clutter_embed_class_init (GtkClutterEmbedClass *klass)
 173 {
 174   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 175   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 176
 177   g_type_class_add_private (klass, sizeof (GtkClutterEmbedPrivate));
 178
 179   gobject_class->dispose = gtk_clutter_embed_dispose;
 180
 181   widget_class->size_allocate = gtk_clutter_embed_size_allocate;
 182   widget_class->realize = gtk_clutter_embed_realize;
 183   widget_class->button_press_event = gtk_clutter_embed_button_event;
 184   widget_class->button_release_event = gtk_clutter_embed_button_event;
 185   widget_class->key_press_event = gtk_clutter_embed_key_event;
 186   widget_class->key_release_event = gtk_clutter_embed_key_event;
 187 }
 188
 189 static void
 190 gtk_clutter_embed_init (GtkClutterEmbed *embed)
 191 {
 192   GtkClutterEmbedPrivate *priv;
 193   const XVisualInfo *xvinfo;
 194   GdkVisual *visual;
 195   GdkColormap *colormap;
 196
 197   embed->priv = priv = GTK_CLUTTER_EMBED_GET_PRIVATE (embed);
 198
 199   gtk_widget_set_double_buffered (GTK_WIDGET (embed), FALSE);
 200
 201   /* note we never ref or unref this */
 202   priv->stage = clutter_stage_get_default ();
 203
 204   /* We need to use the colormap from the Clutter visual */
 205   xvinfo = clutter_x11_get_stage_visual (CLUTTER_STAGE (priv->stage));
 206   visual = gdk_x11_screen_lookup_visual (gdk_screen_get_default (),
 207                                          xvinfo->visualid);
 208   colormap = gdk_colormap_new (visual, FALSE);
 209   gtk_widget_set_colormap (GTK_WIDGET (embed), colormap);
 210 }
 211
 212 /**
 213  * gtk_clutter_embed_new:
 214  *
 215  * FIXME
 216  *
 217  * Return value: the newly created #GtkClutterEmbed
 218  *
 219  * Since: 0.6
 220  */
 221 GtkWidget *
 222 gtk_clutter_embed_new (void)
 223 {
 224   return g_object_new (GTK_TYPE_CLUTTER_EMBED, NULL);
 225 }
 226
 227 /**
 228  * gtk_clutter_embed_get_stage:
 229  * @embed: a #GtkClutterEmbed
 230  *
 231  * Retrieves the #ClutterStage from @embed. The returned stage can be
 232  * used to add actors to the Clutter scene.
 233  *
 234  * Return value: the Clutter stage. You should never destroy or unref
 235  *   the returned actor.
 236  *
 237  * Since: 0.6
 238  */
 239 ClutterActor *
 240 gtk_clutter_embed_get_stage (GtkClutterEmbed *embed)
 241 {
 242   g_return_val_if_fail (GTK_IS_CLUTTER_EMBED (embed), NULL);
 243
 244   return embed->priv->stage;
 245 }