/* * Clutter. * * An OpenGL based 'interactive canvas' library. * * Authored By Matthew Allum * * Copyright (C) 2006 OpenedHand * * 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, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:clutter-stage * @short_description: Top level visual element to which actors are placed. * * #ClutterStage is a top level 'window' on which child actors are placed * and manipulated. */ #include "config.h" #include "clutter-backend.h" #include "clutter-stage.h" #include "clutter-main.h" #include "clutter-color.h" #include "clutter-util.h" #include "clutter-marshal.h" #include "clutter-enum-types.h" #include "clutter-private.h" #include "clutter-debug.h" #include "clutter-version.h" /* For flavour */ #include "cogl.h" #include G_DEFINE_ABSTRACT_TYPE (ClutterStage, clutter_stage, CLUTTER_TYPE_GROUP); #define CLUTTER_STAGE_GET_PRIVATE(obj) \ (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_STAGE, ClutterStagePrivate)) struct _ClutterStagePrivate { ClutterColor color; ClutterPerspective perspective; guint is_fullscreen : 1; guint is_offscreen : 1; guint is_cursor_visible : 1; guint is_user_resizable : 1; gchar *title; }; enum { PROP_0, PROP_COLOR, PROP_FULLSCREEN, PROP_OFFSCREEN, PROP_CURSOR_VISIBLE, PROP_PERSPECTIVE, PROP_TITLE, PROP_USER_RESIZE }; enum { EVENT, EVENT_AFTER, BUTTON_PRESS_EVENT, BUTTON_RELEASE_EVENT, SCROLL_EVENT, KEY_PRESS_EVENT, KEY_RELEASE_EVENT, MOTION_EVENT, STAGE_STATE_EVENT, LAST_SIGNAL }; static guint stage_signals[LAST_SIGNAL] = { 0, }; static void clutter_stage_paint (ClutterActor *self) { ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv; cogl_paint_init (&priv->color); CLUTTER_ACTOR_CLASS (clutter_stage_parent_class)->paint (self); } static void clutter_stage_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { ClutterStage *stage; ClutterStagePrivate *priv; ClutterActor *actor; stage = CLUTTER_STAGE (object); actor = CLUTTER_ACTOR (stage); priv = stage->priv; switch (prop_id) { case PROP_COLOR: clutter_stage_set_color (stage, g_value_get_boxed (value)); break; case PROP_OFFSCREEN: if (priv->is_offscreen == g_value_get_boolean (value)) return; if (CLUTTER_ACTOR_IS_REALIZED (actor)) { clutter_actor_unrealize (actor); priv->is_offscreen = g_value_get_boolean (value); clutter_actor_realize (actor); if (!CLUTTER_ACTOR_IS_REALIZED (actor)) priv->is_offscreen = ~g_value_get_boolean (value); } else priv->is_offscreen = g_value_get_boolean (value); break; case PROP_FULLSCREEN: if (g_value_get_boolean (value)) clutter_stage_fullscreen (stage); else clutter_stage_unfullscreen (stage); break; case PROP_CURSOR_VISIBLE: if (g_value_get_boolean (value)) clutter_stage_show_cursor (stage); else clutter_stage_hide_cursor (stage); break; case PROP_PERSPECTIVE: clutter_stage_set_perspectivex (stage, g_value_get_boxed (value)); break; case PROP_TITLE: clutter_stage_set_title (stage, g_value_get_string (value)); break; case PROP_USER_RESIZE: clutter_stage_set_user_resizable (stage, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void clutter_stage_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { ClutterStage *stage; ClutterStagePrivate *priv; ClutterColor color; ClutterPerspective perspective; stage = CLUTTER_STAGE(object); priv = stage->priv; switch (prop_id) { case PROP_COLOR: clutter_stage_get_color (stage, &color); g_value_set_boxed (value, &color); break; case PROP_OFFSCREEN: g_value_set_boolean (value, priv->is_offscreen); break; case PROP_FULLSCREEN: g_value_set_boolean (value, priv->is_fullscreen); break; case PROP_CURSOR_VISIBLE: g_value_set_boolean (value, priv->is_cursor_visible); break; case PROP_PERSPECTIVE: clutter_stage_get_perspectivex (stage, &perspective); g_value_set_boxed (value, &perspective); break; case PROP_TITLE: g_value_set_string (value, priv->title); break; case PROP_USER_RESIZE: g_value_set_boolean (value, priv->is_user_resizable); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void clutter_stage_class_init (ClutterStageClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass); gobject_class->set_property = clutter_stage_set_property; gobject_class->get_property = clutter_stage_get_property; actor_class->paint = clutter_stage_paint; /** * ClutterStage:fullscreen * * Whether the stage should be fullscreen or not. */ g_object_class_install_property (gobject_class, PROP_FULLSCREEN, g_param_spec_boolean ("fullscreen", "Fullscreen", "Whether the main stage is fullscreen", FALSE, G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_OFFSCREEN, g_param_spec_boolean ("offscreen", "Offscreen", "Whether the main stage is renderer offscreen", FALSE, G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CURSOR_VISIBLE, g_param_spec_boolean ("cursor-visible", "Cursor Visible", "Whether the mouse pointer is visible on the main stage ", TRUE, G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_USER_RESIZE, g_param_spec_boolean ("user-resizable", "User Resizable", "Whether the stage is able to be resized via " "user interaction", FALSE, G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_COLOR, g_param_spec_boxed ("color", "Color", "The color of the main stage", CLUTTER_TYPE_COLOR, CLUTTER_PARAM_READWRITE)); /** * ClutterStage:title: * * The stages title - usually displayed in stage windows title decorations. * * Since: 0.4 */ g_object_class_install_property (gobject_class, PROP_TITLE, g_param_spec_string ("title", "Title", "Stage Title", NULL, CLUTTER_PARAM_READWRITE)); /** * ClutterStage::event: * @stage: the actor which received the event * @event: a #ClutterEvent * * The ::event signal is emitted each time and event is received * by the @stage. */ stage_signals[EVENT] = g_signal_new ("event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::event-after: * @stage: the actor which received the event * @event: a #ClutterEvent * * The ::event-after signal is emitted after each event, except for * the "delete-event" is received by @stage. */ stage_signals[EVENT_AFTER] = g_signal_new ("event-after", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, event_after), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::button-press-event: * @stage: the actor which received the event * @event: a #ClutterButtonEvent * * The ::button-press-event signal is emitted each time a mouse button * is pressed on @stage. */ stage_signals[BUTTON_PRESS_EVENT] = g_signal_new ("button-press-event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, button_press_event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::button-release-event: * @stage: the actor which received the event * @event: a #ClutterButtonEvent * * The ::button-release-event signal is emitted each time a mouse button * is released on @stage. */ stage_signals[BUTTON_RELEASE_EVENT] = g_signal_new ("button-release-event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, button_release_event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::scroll-event: * @stage: the actor which received the event * @event: a #ClutterScrollEvent * * The ::scroll-event signal is emitted each time a the mouse is * scrolled on @stage * * Since: 0.4 */ stage_signals[SCROLL_EVENT] = g_signal_new ("scroll-event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, scroll_event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::key-press-event: * @stage: the actor which received the event * @event: a #ClutterKeyEvent * * The ::key-press-event signal is emitted each time a keyboard button * is pressed on @stage. */ stage_signals[KEY_PRESS_EVENT] = g_signal_new ("key-press-event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, key_press_event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::key-release-event: * @stage: the actor which received the event * @event: a #ClutterKeyEvent * * The ::key-release-event signal is emitted each time a keyboard button * is released on @stage. */ stage_signals[KEY_RELEASE_EVENT] = g_signal_new ("key-release-event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, key_release_event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** * ClutterStage::motion-event: * @stage: the actor which received the event * @event: a #ClutterMotionEvent * * The ::motion-event signal is emitted each time the mouse pointer is * moved on @stage. */ stage_signals[MOTION_EVENT] = g_signal_new ("motion-event", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterStageClass, motion_event), NULL, NULL, clutter_marshal_VOID__BOXED, G_TYPE_NONE, 1, CLUTTER_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); g_type_class_add_private (gobject_class, sizeof (ClutterStagePrivate)); } static void clutter_stage_init (ClutterStage *self) { ClutterStagePrivate *priv; /* a stage is a top-level object */ CLUTTER_SET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IS_TOPLEVEL); self->priv = priv = CLUTTER_STAGE_GET_PRIVATE (self); priv->is_offscreen = FALSE; priv->is_fullscreen = FALSE; priv->is_user_resizable = FALSE; priv->is_cursor_visible = TRUE; priv->color.red = 0xff; priv->color.green = 0xff; priv->color.blue = 0xff; priv->color.alpha = 0xff; priv->perspective.fovy = CFX_60; /* 60 Degrees */ priv->perspective.aspect = CFX_ONE; priv->perspective.z_near = CLUTTER_FLOAT_TO_FIXED (0.1); priv->perspective.z_far = CLUTTER_FLOAT_TO_FIXED (100.0); clutter_actor_set_size (CLUTTER_ACTOR (self), 640, 480); } /** * clutter_stage_get_default: * * Returns the main stage. #ClutterStage is a singleton, so * the stage will be created the first time this function is * called (typically, inside clutter_init()); all the subsequent * calls to clutter_stage_get_default() will return the same * instance. * * Return value: the main #ClutterStage. You should never * destroy or unref the returned actor. */ ClutterActor * clutter_stage_get_default (void) { ClutterMainContext *context; context = clutter_context_get_default (); g_assert (context != NULL); return _clutter_backend_get_stage (context->backend); } /** * clutter_stage_set_color * @stage: A #ClutterStage * @color: A #ClutterColor * * Set the stage color. **/ void clutter_stage_set_color (ClutterStage *stage, const ClutterColor *color) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); g_return_if_fail (color != NULL); priv = stage->priv; priv->color.red = color->red; priv->color.green = color->green; priv->color.blue = color->blue; priv->color.alpha = color->alpha; if (CLUTTER_ACTOR_IS_VISIBLE (CLUTTER_ACTOR (stage))) clutter_actor_queue_redraw (CLUTTER_ACTOR (stage)); g_object_notify (G_OBJECT (stage), "color"); } /** * clutter_stage_get_color * @stage: A #ClutterStage * @color: return location for a #ClutterColor * * Retrieves the stage color. */ void clutter_stage_get_color (ClutterStage *stage, ClutterColor *color) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); g_return_if_fail (color != NULL); priv = stage->priv; color->red = priv->color.red; color->green = priv->color.green; color->blue = priv->color.blue; color->alpha = priv->color.alpha; } /** * clutter_stage_set_perspectivex * @stage: A #ClutterStage * @perspective: A #ClutterPerspective * * Set the stage perspective. **/ void clutter_stage_set_perspectivex (ClutterStage *stage, ClutterPerspective *perspective) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; priv->perspective.fovy = perspective->fovy; priv->perspective.aspect = perspective->aspect; priv->perspective.z_near = perspective->z_near; priv->perspective.z_far = perspective->z_far; CLUTTER_SET_PRIVATE_FLAGS(stage, CLUTTER_ACTOR_SYNC_MATRICES); } /** * clutter_stage_get_perspectivex * @stage: A #ClutterStage * @perspective: return location for a #ClutterPerspective * * Retrieves the stage perspective. */ void clutter_stage_get_perspectivex (ClutterStage *stage, ClutterPerspective *perspective) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; perspective->fovy = priv->perspective.fovy; perspective->aspect = priv->perspective.aspect; perspective->z_near = priv->perspective.z_near; perspective->z_far = priv->perspective.z_far; } /** * clutter_stage_set_perspective * @stage: A #ClutterStage * @fovy: FIXME * @aspect: FIXME * @z_near: FIXME * @z_far: FIXME * * Set the stage perspective. * * Since: 0.4 */ void clutter_stage_set_perspective (ClutterStage *stage, gfloat fovy, gfloat aspect, gfloat z_near, gfloat z_far) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; priv->perspective.fovy = CLUTTER_FLOAT_TO_FIXED(fovy); priv->perspective.aspect = CLUTTER_FLOAT_TO_FIXED(aspect); priv->perspective.z_near = CLUTTER_FLOAT_TO_FIXED(z_near); priv->perspective.z_far = CLUTTER_FLOAT_TO_FIXED(z_far); CLUTTER_SET_PRIVATE_FLAGS(stage, CLUTTER_ACTOR_SYNC_MATRICES); } /** * clutter_stage_get_perspective * @stage: A #ClutterStage * @fovy: FIXME * @aspect: FIXME * @z_near: FIXME * @z_far: FIXME * * Retrieves the stage perspective. */ void clutter_stage_get_perspective (ClutterStage *stage, gfloat *fovy, gfloat *aspect, gfloat *z_near, gfloat *z_far) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; if (fovy) *fovy = CLUTTER_FIXED_TO_FLOAT (priv->perspective.fovy); if (aspect) *aspect = CLUTTER_FIXED_TO_FLOAT (priv->perspective.aspect); if (z_near) *z_near = CLUTTER_FIXED_TO_FLOAT (priv->perspective.z_near); if (z_far) *z_far = CLUTTER_FIXED_TO_FLOAT (priv->perspective.z_far); } /** * clutter_stage_fullscreen: * @stage: a #ClutterStage * * Asks to place the stage window in the fullscreen state. Note that you * shouldn't assume the window is definitely full screen afterward, because * other entities (e.g. the user or window manager) could unfullscreen it * again, and not all window managers honor requests to fullscreen windows. */ void clutter_stage_fullscreen (ClutterStage *stage) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; if (!priv->is_fullscreen) { priv->is_fullscreen = TRUE; if (CLUTTER_STAGE_GET_CLASS (stage)->set_fullscreen) CLUTTER_STAGE_GET_CLASS (stage)->set_fullscreen (stage, TRUE); g_object_notify (G_OBJECT (stage), "fullscreen"); } } /** * clutter_stage_unfullscreen: * @stage: a #ClutterStage * * Asks to toggle off the fullscreen state for the stage window. Note that * you shouldn't assume the window is definitely not full screen afterward, * because other entities (e.g. the user or window manager) could fullscreen * it again, and not all window managers honor requests to unfullscreen * windows. */ void clutter_stage_unfullscreen (ClutterStage *stage) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; if (priv->is_fullscreen) { priv->is_fullscreen = FALSE; if (CLUTTER_STAGE_GET_CLASS (stage)->set_fullscreen) CLUTTER_STAGE_GET_CLASS (stage)->set_fullscreen (stage, FALSE); g_object_notify (G_OBJECT (stage), "fullscreen"); } } /** * clutter_stage_set_user_resizable: * @stage: a #ClutterStage * @resizable: whether if the stage should be user resizable. * * Sets if the stage is able to be resized by user interaction (i.e via * window manager controls) * * Since: 0.4 */ void clutter_stage_set_user_resizable (ClutterStage *stage, gboolean resizable) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; if (clutter_feature_available (CLUTTER_FEATURE_STAGE_USER_RESIZE) && priv->is_user_resizable != resizable && CLUTTER_STAGE_GET_CLASS (stage)->set_user_resize) { priv->is_user_resizable = resizable; CLUTTER_STAGE_GET_CLASS (stage)->set_user_resize (stage, resizable); g_object_notify (G_OBJECT (stage), "user-resizable"); } } /** * clutter_stage_get_user_resizable: * @stage: a #ClutterStage * * Retrieves the value set with clutter_stage_set_user_resizable(). * * Return value: %TRUE is the stage is resizable by the user. * * Since: 0.4 */ gboolean clutter_stage_get_user_resizable (ClutterStage *stage) { g_return_val_if_fail (CLUTTER_IS_STAGE (stage), FALSE); return stage->priv->is_user_resizable; } /** * clutter_stage_show_cursor: * @stage: a #ClutterStage * * Shows the cursor on the stage window */ void clutter_stage_show_cursor (ClutterStage *stage) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; if (!priv->is_cursor_visible) { priv->is_cursor_visible = TRUE; if (CLUTTER_STAGE_GET_CLASS (stage)->set_cursor_visible) CLUTTER_STAGE_GET_CLASS (stage)->set_cursor_visible (stage, TRUE); g_object_notify (G_OBJECT (stage), "cursor-visible"); } } /** * clutter_stage_hide_cursor: * @stage: a #ClutterStage * * Makes the cursor invisible on the stage window * * Since: 0.4 */ void clutter_stage_hide_cursor (ClutterStage *stage) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; if (priv->is_cursor_visible) { priv->is_cursor_visible = FALSE; if (CLUTTER_STAGE_GET_CLASS (stage)->set_cursor_visible) CLUTTER_STAGE_GET_CLASS (stage)->set_cursor_visible (stage, FALSE); g_object_notify (G_OBJECT (stage), "cursor-visible"); } } /** * clutter_stage_snapshot * @stage: A #ClutterStage * @x: x coordinate of the first pixel that is read from stage * @y: y coordinate of the first pixel that is read from stage * @width: Width dimention of pixels to be read, or -1 for the * entire stage width * @height: Height dimention of pixels to be read, or -1 for the * entire stage height * * Gets a pixel based representation of the current rendered stage. * * Return value: pixel representation as a #GdkPixbuf **/ GdkPixbuf * clutter_stage_snapshot (ClutterStage *stage, gint x, gint y, gint width, gint height) { ClutterStageClass *klass; g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL); g_return_val_if_fail (x >= 0 && y >= 0, NULL); klass = CLUTTER_STAGE_GET_CLASS (stage); if (klass->draw_to_pixbuf) return klass->draw_to_pixbuf (stage, x, y, width, height); return NULL; } /** * clutter_stage_get_actor_at_pos: * @stage: a #ClutterStage * @x: X coordinate to check * @y: Y coordinate to check * * Checks the scene at the coordinates @x and @y and returns a pointer * to the #ClutterActor at those coordinates. * * Return value: the actor at the specified coordinates, if any */ ClutterActor * clutter_stage_get_actor_at_pos (ClutterStage *stage, gint x, gint y) { ClutterMainContext *context; guchar pixel[4]; GLint viewport[4]; ClutterColor white = { 0xff, 0xff, 0xff, 0xff }; guint32 id; gint r,g,b; context = clutter_context_get_default (); cogl_paint_init (&white); cogl_enable (0); /* Render the entire scence in pick mode - just single colored silhouette's * are drawn offscreen (as we never swap buffers) */ context->pick_mode = TRUE; clutter_actor_paint (CLUTTER_ACTOR (stage)); context->pick_mode = FALSE; /* Calls should work under both GL and GLES, note GLES needs RGBA */ glGetIntegerv (GL_VIEWPORT, viewport); glReadPixels (x, viewport[3] - y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixel); if (pixel[0] == 0xff && pixel[1] == 0xff && pixel[2] == 0xff) return CLUTTER_ACTOR(stage); cogl_get_bitmasks (&r, &g, &b, NULL); /* Decode color back into an ID, taking into account fb depth */ id = pixel[2] >> (8 - b) | pixel[1] << b >> (8 - g) | pixel[0] << (g + b) >> (8 - r); return clutter_container_find_child_by_id (CLUTTER_CONTAINER (stage), id); } /** * clutter_stage_event: * @stage: a #ClutterStage * @event: a #ClutterEvent * * This function is used to emit an event on the main stage. * You should rarely need to use this function, except for * synthetising events. * * Return value: the return value from the signal emission * * Since: 0.4 */ gboolean clutter_stage_event (ClutterStage *stage, ClutterEvent *event) { gboolean res = TRUE; gint signal_num = -1; g_return_val_if_fail (CLUTTER_IS_STAGE (stage), FALSE); g_return_val_if_fail (event != NULL, FALSE); g_object_ref (stage); g_signal_emit (stage, stage_signals[EVENT], 0, event); switch (event->type) { case CLUTTER_NOTHING: break; case CLUTTER_BUTTON_PRESS: case CLUTTER_2BUTTON_PRESS: case CLUTTER_3BUTTON_PRESS: signal_num = BUTTON_PRESS_EVENT; break; case CLUTTER_BUTTON_RELEASE: signal_num = BUTTON_RELEASE_EVENT; break; case CLUTTER_SCROLL: signal_num = SCROLL_EVENT; break; case CLUTTER_KEY_PRESS: signal_num = KEY_PRESS_EVENT; break; case CLUTTER_KEY_RELEASE: signal_num = KEY_RELEASE_EVENT; break; case CLUTTER_MOTION: signal_num = MOTION_EVENT; break; case CLUTTER_DELETE: signal_num = -1; break; case CLUTTER_STAGE_STATE: signal_num = -1; break; case CLUTTER_DESTROY_NOTIFY: signal_num = -1; break; case CLUTTER_CLIENT_MESSAGE: signal_num = -1; break; } if (signal_num != -1) { g_signal_emit (stage, stage_signals[signal_num], 0, event); g_signal_emit (stage, stage_signals[EVENT_AFTER], 0, event); res = TRUE; } g_object_unref (stage); return res; } /** * clutter_stage_set_title * @stage: A #ClutterStage * @title: A utf8 string for the stage windows title. * * Sets the stage title. * * Since 0.4 **/ void clutter_stage_set_title (ClutterStage *stage, const gchar *title) { ClutterStagePrivate *priv; g_return_if_fail (CLUTTER_IS_STAGE (stage)); priv = stage->priv; g_free (priv->title); priv->title = g_strdup (title); if (CLUTTER_STAGE_GET_CLASS (stage)->set_title) CLUTTER_STAGE_GET_CLASS (stage)->set_title (stage, priv->title); g_object_notify (G_OBJECT (stage), "title"); } /** * clutter_stage_get_title * @stage: A #ClutterStage * * Gets the stage title. * * Return value: pointer to the title string for the stage. The * returned string is owned by the actor and should not * be modified or freed. * * Since: 0.4 **/ G_CONST_RETURN gchar * clutter_stage_get_title (ClutterStage *stage) { g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL); return stage->priv->title; } /*** Perspective boxed type ******/ /** * clutter_perspective_copy: * @perspective: a #ClutterPerspective * * Makes a copy of the perspective structure. The result must be * freed using clutter_perspective_free(). * * Return value: an allocated copy of @perspective. * * Since: 0.4 */ ClutterPerspective * clutter_perspective_copy (const ClutterPerspective *perspective) { ClutterPerspective *result; g_return_val_if_fail (perspective != NULL, NULL); result = g_slice_new (ClutterPerspective); *result = *perspective; return result; } /** * clutter_perspective_free: * @perspective: a #ClutterPerspective * * Frees a perspective structure created with clutter_perspective_copy(). * * Since: 0.4 */ void clutter_perspective_free (ClutterPerspective *perspective) { g_return_if_fail (perspective != NULL); g_slice_free (ClutterPerspective, perspective); } GType clutter_perspective_get_type (void) { static GType our_type = 0; if (!our_type) our_type = g_boxed_type_register_static ("ClutterPerspective", (GBoxedCopyFunc) clutter_perspective_copy, (GBoxedFreeFunc) clutter_perspective_free); return our_type; }