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8681cb249c
* clutter/clutter-stage.c (clutter_stage_read_pixels): Use OpenGL's coordinate system for the arguments to glReadPixels (so that y zero is the bottom of the window). Use clutter_redraw instead of clutter_stage_paint to ensure the right GL context is selected. Set some of the glPixelStore parameters that might have been changed by Cogl. * tests/test-stage-read-pixels.c: Replace with a different test that gets a sub-region of the stage around the cursor.
1908 lines
51 KiB
C
1908 lines
51 KiB
C
/*
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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 Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 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-stage
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* @short_description: Top level visual element to which actors are placed.
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*
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* #ClutterStage is a top level 'window' on which child actors are placed
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* and manipulated.
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*
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* Clutter creates a default stage upon initialization, which can be retrieved
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* using clutter_stage_get_default(). Clutter always provides the default
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* stage, unless the backend is unable to create one. The stage returned
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* by clutter_stage_get_default() is guaranteed to always be the same.
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*
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* Backends might provide support for multiple stages. The support for this
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* feature can be checked at run-time using the clutter_feature_available()
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* function and the %CLUTTER_FEATURE_STAGE_MULTIPLE flag. If the backend used
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* supports multiple stages, new #ClutterStage instances can be created
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* using clutter_stage_new(). These stages must be managed by the developer
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* using clutter_actor_destroy(), which will take care of destroying all the
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* actors contained inside them.
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*
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* #ClutterStage is a proxy actor, wrapping the backend-specific
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* implementation of the windowing system. It is possible to subclass
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* #ClutterStage, as long as every overridden virtual function chains up to
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* the parent class corresponding function.
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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-backend.h"
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#include "clutter-stage.h"
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#include "clutter-main.h"
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#include "clutter-color.h"
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#include "clutter-util.h"
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#include "clutter-marshal.h"
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#include "clutter-enum-types.h"
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#include "clutter-private.h"
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#include "clutter-debug.h"
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#include "clutter-stage-manager.h"
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#include "clutter-stage-window.h"
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#include "clutter-version.h" /* For flavour */
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#include "clutter-id-pool.h"
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#include "cogl/cogl.h"
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G_DEFINE_TYPE (ClutterStage, clutter_stage, CLUTTER_TYPE_GROUP);
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#define CLUTTER_STAGE_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_STAGE, ClutterStagePrivate))
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struct _ClutterStagePrivate
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{
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/* the stage implementation */
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ClutterActor *impl;
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ClutterColor color;
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ClutterPerspective perspective;
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ClutterFog fog;
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gchar *title;
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ClutterActor *key_focused_actor;
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guint update_idle; /* repaint idler id */
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guint is_fullscreen : 1;
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guint is_offscreen : 1;
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guint is_cursor_visible : 1;
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guint is_user_resizable : 1;
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guint use_fog : 1;
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};
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enum
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{
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PROP_0,
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PROP_COLOR,
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PROP_FULLSCREEN,
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PROP_OFFSCREEN,
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PROP_CURSOR_VISIBLE,
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PROP_PERSPECTIVE,
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PROP_TITLE,
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PROP_USER_RESIZE,
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PROP_USE_FOG
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};
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enum
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{
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FULLSCREEN,
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UNFULLSCREEN,
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ACTIVATE,
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DEACTIVATE,
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LAST_SIGNAL
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};
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static guint stage_signals[LAST_SIGNAL] = { 0, };
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static void
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clutter_stage_get_preferred_width (ClutterActor *self,
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ClutterUnit for_height,
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ClutterUnit *min_width_p,
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ClutterUnit *natural_width_p)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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g_assert (priv->impl != NULL);
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CLUTTER_ACTOR_GET_CLASS (priv->impl)->get_preferred_width (priv->impl,
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for_height,
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min_width_p,
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natural_width_p);
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}
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static void
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clutter_stage_get_preferred_height (ClutterActor *self,
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ClutterUnit for_width,
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ClutterUnit *min_height_p,
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ClutterUnit *natural_height_p)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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g_assert (priv->impl != NULL);
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CLUTTER_ACTOR_GET_CLASS (priv->impl)->get_preferred_height (priv->impl,
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for_width,
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min_height_p,
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natural_height_p);
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}
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static void
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clutter_stage_allocate (ClutterActor *self,
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const ClutterActorBox *box,
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gboolean origin_changed)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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g_assert (priv->impl != NULL);
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/* if the stage is fixed size (for instance, it's using a frame-buffer)
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* then we simply ignore any allocation request and override the
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* allocation chain.
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*/
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if (G_LIKELY (!clutter_feature_available (CLUTTER_FEATURE_STAGE_STATIC)))
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{
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ClutterActorClass *klass;
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CLUTTER_NOTE (ACTOR, "Following allocation to %dx%d (origin %s)",
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CLUTTER_UNITS_TO_DEVICE (box->x2 - box->x1),
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CLUTTER_UNITS_TO_DEVICE (box->y2 - box->y1),
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origin_changed ? "changed" : "not changed");
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klass = CLUTTER_ACTOR_CLASS (clutter_stage_parent_class);
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klass->allocate (self, box, origin_changed);
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klass = CLUTTER_ACTOR_GET_CLASS (priv->impl);
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klass->allocate (priv->impl, box, origin_changed);
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}
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else
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{
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ClutterActorBox override = { 0, };
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ClutterActorClass *klass;
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ClutterUnit natural_width, natural_height;
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/* propagate the allocation */
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klass = CLUTTER_ACTOR_GET_CLASS (priv->impl);
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klass->allocate (self, box, origin_changed);
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/* get the preferred size from the backend */
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clutter_actor_get_preferred_size (priv->impl,
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NULL, NULL,
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&natural_width, &natural_height);
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override.x1 = 0;
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override.y1 = 0;
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override.x2 = natural_width;
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override.y2 = natural_height;
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/* and store the overridden allocation */
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klass = CLUTTER_ACTOR_CLASS (clutter_stage_parent_class);
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klass->allocate (self, &override, origin_changed);
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}
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}
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static void
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clutter_stage_paint (ClutterActor *self)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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CLUTTER_SET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IN_PAINT);
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CLUTTER_NOTE (PAINT, "Initializing stage paint");
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cogl_paint_init (&priv->color);
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if (priv->use_fog)
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{
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cogl_fog_set (&priv->color,
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priv->fog.density,
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priv->fog.z_near,
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priv->fog.z_far);
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}
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CLUTTER_NOTE (PAINT, "Proxying the paint to the stage implementation");
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clutter_actor_paint (priv->impl);
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CLUTTER_UNSET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IN_PAINT);
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/* this will take care of painting every child */
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CLUTTER_ACTOR_CLASS (clutter_stage_parent_class)->paint (self);
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}
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static void
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clutter_stage_pick (ClutterActor *self,
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const ClutterColor *color)
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{
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/* Paint nothing, cogl_paint_init() effectively paints the stage
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* silhouette for us - see _clutter_do_pick().
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* Chain up to the groups paint howerer so our children get picked
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* - clutter_group_pick
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*/
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CLUTTER_ACTOR_CLASS (clutter_stage_parent_class)->paint (self);
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}
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static void
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clutter_stage_realize (ClutterActor *self)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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CLUTTER_ACTOR_SET_FLAGS (self, CLUTTER_ACTOR_REALIZED);
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g_assert (priv->impl != NULL);
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CLUTTER_ACTOR_GET_CLASS (priv->impl)->realize (priv->impl);
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/* ensure that the stage is using the context if the
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* realization sequence was successful
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*/
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if (CLUTTER_ACTOR_IS_REALIZED (priv->impl))
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clutter_stage_ensure_current (CLUTTER_STAGE (self));
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else
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CLUTTER_ACTOR_UNSET_FLAGS (self, CLUTTER_ACTOR_REALIZED);
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}
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static void
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clutter_stage_unrealize (ClutterActor *self)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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/* unset the flag */
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CLUTTER_ACTOR_UNSET_FLAGS (self, CLUTTER_ACTOR_REALIZED);
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/* and then unrealize the implementation */
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g_assert (priv->impl != NULL);
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CLUTTER_ACTOR_GET_CLASS (priv->impl)->unrealize (priv->impl);
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clutter_stage_ensure_current (CLUTTER_STAGE (self));
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}
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static void
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clutter_stage_show (ClutterActor *self)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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g_assert (priv->impl != NULL);
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if (!CLUTTER_ACTOR_IS_REALIZED (priv->impl))
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clutter_actor_realize (priv->impl);
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clutter_actor_show (priv->impl);
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CLUTTER_ACTOR_CLASS (clutter_stage_parent_class)->show (self);
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}
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static void
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clutter_stage_hide (ClutterActor *self)
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{
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ClutterStagePrivate *priv = CLUTTER_STAGE (self)->priv;
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g_assert (priv->impl != NULL);
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clutter_actor_hide (priv->impl);
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CLUTTER_ACTOR_CLASS (clutter_stage_parent_class)->hide (self);
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}
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static void
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clutter_stage_real_fullscreen (ClutterStage *stage)
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{
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ClutterStagePrivate *priv = stage->priv;
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ClutterUnit natural_width, natural_height;
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ClutterActorBox box;
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/* we need to force an allocation here because the size
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* of the stage might have been changed by the backend
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*
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* this is a really bad solution to the issues caused by
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* the fact that fullscreening the stage on the X11 backends
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* is really an asynchronous operation
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*/
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clutter_actor_get_preferred_size (CLUTTER_ACTOR (priv->impl),
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NULL, NULL,
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&natural_width, &natural_height);
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box.x1 = 0;
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box.y1 = 0;
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box.x2 = natural_width;
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box.y2 = natural_height;
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clutter_actor_allocate (CLUTTER_ACTOR (stage), &box, FALSE);
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}
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static void
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clutter_stage_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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ClutterStage *stage;
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ClutterStagePrivate *priv;
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ClutterActor *actor;
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stage = CLUTTER_STAGE (object);
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actor = CLUTTER_ACTOR (stage);
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priv = stage->priv;
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switch (prop_id)
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{
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case PROP_COLOR:
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clutter_stage_set_color (stage, g_value_get_boxed (value));
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break;
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case PROP_OFFSCREEN:
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if (priv->is_offscreen == g_value_get_boolean (value))
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return;
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if (CLUTTER_ACTOR_IS_REALIZED (actor))
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{
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/* Backend needs to check this prop and handle accordingly
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* in realise.
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* FIXME: More 'obvious' implementation needed?
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*/
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clutter_actor_unrealize (actor);
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priv->is_offscreen = g_value_get_boolean (value);
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clutter_actor_realize (actor);
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if (!CLUTTER_ACTOR_IS_REALIZED (actor))
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priv->is_offscreen = ~g_value_get_boolean (value);
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}
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else
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priv->is_offscreen = g_value_get_boolean (value);
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break;
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case PROP_FULLSCREEN:
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if (g_value_get_boolean (value))
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clutter_stage_fullscreen (stage);
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else
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clutter_stage_unfullscreen (stage);
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break;
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case PROP_CURSOR_VISIBLE:
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if (g_value_get_boolean (value))
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clutter_stage_show_cursor (stage);
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else
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clutter_stage_hide_cursor (stage);
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break;
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case PROP_PERSPECTIVE:
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clutter_stage_set_perspectivex (stage, g_value_get_boxed (value));
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break;
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case PROP_TITLE:
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clutter_stage_set_title (stage, g_value_get_string (value));
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break;
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case PROP_USER_RESIZE:
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clutter_stage_set_user_resizable (stage, g_value_get_boolean (value));
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break;
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case PROP_USE_FOG:
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clutter_stage_set_use_fog (stage, g_value_get_boolean (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_stage_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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ClutterStage *stage;
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ClutterStagePrivate *priv;
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ClutterColor color;
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ClutterPerspective perspective;
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stage = CLUTTER_STAGE(object);
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priv = stage->priv;
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switch (prop_id)
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{
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case PROP_COLOR:
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clutter_stage_get_color (stage, &color);
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g_value_set_boxed (value, &color);
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break;
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case PROP_OFFSCREEN:
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g_value_set_boolean (value, priv->is_offscreen);
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break;
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case PROP_FULLSCREEN:
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g_value_set_boolean (value, priv->is_fullscreen);
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break;
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case PROP_CURSOR_VISIBLE:
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g_value_set_boolean (value, priv->is_cursor_visible);
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break;
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case PROP_PERSPECTIVE:
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clutter_stage_get_perspectivex (stage, &perspective);
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g_value_set_boxed (value, &perspective);
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break;
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case PROP_TITLE:
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g_value_set_string (value, priv->title);
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break;
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case PROP_USER_RESIZE:
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g_value_set_boolean (value, priv->is_user_resizable);
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break;
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case PROP_USE_FOG:
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g_value_set_boolean (value, priv->use_fog);
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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_stage_dispose (GObject *object)
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{
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ClutterStage *stage = CLUTTER_STAGE (object);
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ClutterStagePrivate *priv = stage->priv;
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ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
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clutter_actor_unrealize (CLUTTER_ACTOR (object));
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if (priv->update_idle)
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{
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g_source_remove (priv->update_idle);
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priv->update_idle = 0;
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}
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_clutter_stage_manager_remove_stage (stage_manager, stage);
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if (priv->impl)
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{
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CLUTTER_NOTE (MISC, "Disposing of the stage implementation");
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g_object_unref (priv->impl);
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priv->impl = NULL;
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}
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G_OBJECT_CLASS (clutter_stage_parent_class)->dispose (object);
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}
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static void
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clutter_stage_finalize (GObject *object)
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{
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ClutterStage *stage = CLUTTER_STAGE (object);
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g_free (stage->priv->title);
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G_OBJECT_CLASS (clutter_stage_parent_class)->finalize (object);
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}
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static void
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clutter_stage_class_init (ClutterStageClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
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gobject_class->set_property = clutter_stage_set_property;
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gobject_class->get_property = clutter_stage_get_property;
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gobject_class->dispose = clutter_stage_dispose;
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gobject_class->finalize = clutter_stage_finalize;
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actor_class->allocate = clutter_stage_allocate;
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actor_class->get_preferred_width = clutter_stage_get_preferred_width;
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actor_class->get_preferred_height = clutter_stage_get_preferred_height;
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actor_class->paint = clutter_stage_paint;
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actor_class->pick = clutter_stage_pick;
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actor_class->realize = clutter_stage_realize;
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actor_class->unrealize = clutter_stage_unrealize;
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actor_class->show = clutter_stage_show;
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actor_class->hide = clutter_stage_hide;
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/**
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* 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));
|
|
/**
|
|
* ClutterStage:offscreen:
|
|
*
|
|
* Whether the stage should be rendered in an offscreen buffer.
|
|
*/
|
|
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));
|
|
/**
|
|
* ClutterStage:cursor-visible:
|
|
*
|
|
* Whether the mouse pointer should be visible
|
|
*/
|
|
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));
|
|
/**
|
|
* ClutterStage:user-resizable:
|
|
*
|
|
* Whether the stage is resizable via user interaction.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
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));
|
|
/**
|
|
* ClutterStage:color:
|
|
*
|
|
* The color of the main stage.
|
|
*/
|
|
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:perspective:
|
|
*
|
|
* The parameters used for the perspective projection from 3D
|
|
* coordinates to 2D
|
|
*
|
|
* Since: 0.8.2
|
|
*/
|
|
g_object_class_install_property
|
|
(gobject_class, PROP_PERSPECTIVE,
|
|
g_param_spec_boxed ("perspective",
|
|
"Perspective",
|
|
"Perspective projection parameters",
|
|
CLUTTER_TYPE_PERSPECTIVE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
|
|
/**
|
|
* ClutterStage:title:
|
|
*
|
|
* The stage's 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:use-fog:
|
|
*
|
|
* Whether the stage should use a linear GL "fog" in creating the
|
|
* depth-cueing effect, to enhance the perception of depth by fading
|
|
* actors farther from the viewpoint.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_USE_FOG,
|
|
g_param_spec_boolean ("use-fog",
|
|
"Use Fog",
|
|
"Whether to enable depth cueing",
|
|
FALSE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
|
|
/**
|
|
* ClutterStage::fullscreen
|
|
* @stage: the stage which was fullscreened
|
|
*
|
|
* The ::fullscreen signal is emitted when the stage is made fullscreen.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
stage_signals[FULLSCREEN] =
|
|
g_signal_new ("fullscreen",
|
|
G_TYPE_FROM_CLASS (gobject_class),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (ClutterStageClass, fullscreen),
|
|
NULL, NULL,
|
|
clutter_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
/**
|
|
* ClutterStage::unfullscreen
|
|
* @stage: the stage which has left a fullscreen state.
|
|
*
|
|
* The ::unfullscreen signal is emitted when the stage leaves a fullscreen
|
|
* state.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
stage_signals[UNFULLSCREEN] =
|
|
g_signal_new ("unfullscreen",
|
|
G_TYPE_FROM_CLASS (gobject_class),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (ClutterStageClass, unfullscreen),
|
|
NULL, NULL,
|
|
clutter_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
/**
|
|
* ClutterStage::activate
|
|
* @stage: the stage which was activated
|
|
*
|
|
* The ::activate signal is emitted when the stage receives key focus
|
|
* from the underlying window system.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
stage_signals[ACTIVATE] =
|
|
g_signal_new ("activate",
|
|
G_TYPE_FROM_CLASS (gobject_class),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (ClutterStageClass, activate),
|
|
NULL, NULL,
|
|
clutter_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
/**
|
|
* ClutterStage::deactivate
|
|
* @stage: the stage which was deactivated
|
|
*
|
|
* The ::activate signal is emitted when the stage loses key focus
|
|
* from the underlying window system.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
stage_signals[DEACTIVATE] =
|
|
g_signal_new ("deactivate",
|
|
G_TYPE_FROM_CLASS (gobject_class),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (ClutterStageClass, deactivate),
|
|
NULL, NULL,
|
|
clutter_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
|
|
klass->fullscreen = clutter_stage_real_fullscreen;
|
|
|
|
g_type_class_add_private (gobject_class, sizeof (ClutterStagePrivate));
|
|
}
|
|
|
|
static void
|
|
clutter_stage_init (ClutterStage *self)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
ClutterBackend *backend;
|
|
|
|
/* a stage is a top-level object */
|
|
CLUTTER_SET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IS_TOPLEVEL);
|
|
|
|
self->priv = priv = CLUTTER_STAGE_GET_PRIVATE (self);
|
|
|
|
CLUTTER_NOTE (BACKEND, "Creating stage from the default backend");
|
|
backend = clutter_get_default_backend ();
|
|
priv->impl = _clutter_backend_create_stage (backend, self, NULL);
|
|
if (!priv->impl)
|
|
{
|
|
g_warning ("Unable to create a new stage, falling back to the "
|
|
"default stage.");
|
|
priv->impl = CLUTTER_ACTOR (_clutter_stage_get_default_window ());
|
|
|
|
/* at this point we must have a default stage, or we're screwed */
|
|
g_assert (priv->impl != NULL);
|
|
}
|
|
else
|
|
g_object_ref_sink (priv->impl);
|
|
|
|
priv->is_offscreen = FALSE;
|
|
priv->is_fullscreen = FALSE;
|
|
priv->is_user_resizable = FALSE;
|
|
priv->is_cursor_visible = TRUE;
|
|
priv->use_fog = FALSE;
|
|
|
|
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);
|
|
|
|
/* depth cueing */
|
|
priv->fog.density = CLUTTER_FLOAT_TO_FIXED (0.1);
|
|
priv->fog.z_near = CLUTTER_FLOAT_TO_FIXED (1.0);
|
|
priv->fog.z_far = CLUTTER_FLOAT_TO_FIXED (2.0);
|
|
|
|
clutter_actor_set_reactive (CLUTTER_ACTOR (self), TRUE);
|
|
clutter_stage_set_key_focus (self, NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_default:
|
|
*
|
|
* Returns the main stage. The default #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.
|
|
*
|
|
* Clutter guarantess the existence of the default stage.
|
|
*
|
|
* Return value: the main #ClutterStage. You should never
|
|
* destroy or unref the returned actor.
|
|
*/
|
|
ClutterActor *
|
|
clutter_stage_get_default (void)
|
|
{
|
|
ClutterStageManager *stage_manager = clutter_stage_manager_get_default ();
|
|
ClutterStage *stage;
|
|
|
|
stage = clutter_stage_manager_get_default_stage (stage_manager);
|
|
if (G_UNLIKELY (stage == NULL))
|
|
/* This will take care of automatically adding the stage to the
|
|
* stage manager and setting it as the default. Its floating
|
|
* reference will be claimed by the stage manager.
|
|
*/
|
|
stage = g_object_new (CLUTTER_TYPE_STAGE, NULL);
|
|
|
|
return CLUTTER_ACTOR (stage);
|
|
}
|
|
|
|
/**
|
|
* 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 = *color;
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (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 = priv->color;
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_perspectivex
|
|
* @stage: A #ClutterStage
|
|
* @perspective: A #ClutterPerspective
|
|
*
|
|
* Set the stage perspective. This is the fixed point version of
|
|
* clutter_stage_set_perspective().
|
|
**/
|
|
void
|
|
clutter_stage_set_perspectivex (ClutterStage *stage,
|
|
ClutterPerspective *perspective)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
g_return_if_fail (perspective != NULL);
|
|
|
|
priv = stage->priv;
|
|
|
|
priv->perspective = *perspective;
|
|
|
|
/* this will cause the viewport to be reset; see
|
|
* clutter_maybe_setup_viewport() inside clutter-main.c
|
|
*/
|
|
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. This is the fixed point version of
|
|
* clutter_stage_get_perspective().
|
|
*/
|
|
void
|
|
clutter_stage_get_perspectivex (ClutterStage *stage,
|
|
ClutterPerspective *perspective)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
g_return_if_fail (perspective != NULL);
|
|
|
|
*perspective = stage->priv->perspective;
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_perspective
|
|
* @stage: A #ClutterStage
|
|
* @fovy: the field of view angle, in degrees, in the y direction
|
|
* @aspect: the aspect ratio that determines the field of view in the x
|
|
* direction. The aspect ratio is the ratio of x (width) to y (height)
|
|
* @z_near: the distance from the viewer to the near clipping
|
|
* plane (always positive)
|
|
* @z_far: the distance from the viewer to the far clipping
|
|
* plane (always positive)
|
|
*
|
|
* Sets 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);
|
|
|
|
/* this will cause the viewport to be reset; see
|
|
* clutter_maybe_setup_viewport() inside clutter-main.c
|
|
*/
|
|
CLUTTER_SET_PRIVATE_FLAGS (stage, CLUTTER_ACTOR_SYNC_MATRICES);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_perspective
|
|
* @stage: A #ClutterStage
|
|
* @fovy: return location for the field of view, in degrees, or %NULL
|
|
* @aspect: return location for the aspect ratio, or %NULL
|
|
* @z_near: return location for the distance of the viewer from the
|
|
* near clipping plane, or %NULL
|
|
* @z_far: return location for the distance of the viewer from the
|
|
* far clipping plane, or %NULL
|
|
*
|
|
* Retrieves the stage perspective.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
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)
|
|
{
|
|
ClutterStageWindow *impl = CLUTTER_STAGE_WINDOW (priv->impl);
|
|
ClutterStageWindowIface *iface;
|
|
|
|
iface = CLUTTER_STAGE_WINDOW_GET_IFACE (impl);
|
|
|
|
/* Only set if backend implements.
|
|
* Also see clutter_stage_event() for setting priv->is_fullscreen
|
|
* on state change event.
|
|
*/
|
|
if (iface->set_fullscreen)
|
|
iface->set_fullscreen (impl, TRUE);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
ClutterStageWindow *impl = CLUTTER_STAGE_WINDOW (priv->impl);
|
|
ClutterStageWindowIface *iface;
|
|
|
|
iface = CLUTTER_STAGE_WINDOW_GET_IFACE (impl);
|
|
|
|
/* Only set if backend implements.
|
|
* Also see clutter_stage_event() for setting priv->is_fullscreen
|
|
* on state change event.
|
|
*/
|
|
if (iface->set_fullscreen)
|
|
iface->set_fullscreen (impl, FALSE);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_user_resizable:
|
|
* @stage: a #ClutterStage
|
|
* @resizable: whether the stage should be user resizable.
|
|
*
|
|
* Sets if the stage is resizable by user interaction (e.g. 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)
|
|
{
|
|
ClutterStageWindow *impl = CLUTTER_STAGE_WINDOW (priv->impl);
|
|
ClutterStageWindowIface *iface;
|
|
|
|
iface = CLUTTER_STAGE_WINDOW_GET_IFACE (impl);
|
|
if (iface->set_user_resizable)
|
|
{
|
|
priv->is_user_resizable = resizable;
|
|
|
|
iface->set_user_resizable (impl, 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 if 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)
|
|
{
|
|
ClutterStageWindow *impl = CLUTTER_STAGE_WINDOW (priv->impl);
|
|
ClutterStageWindowIface *iface;
|
|
|
|
iface = CLUTTER_STAGE_WINDOW_GET_IFACE (impl);
|
|
if (iface->set_cursor_visible)
|
|
{
|
|
priv->is_cursor_visible = TRUE;
|
|
|
|
iface->set_cursor_visible (impl, 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)
|
|
{
|
|
ClutterStageWindow *impl = CLUTTER_STAGE_WINDOW (priv->impl);
|
|
ClutterStageWindowIface *iface;
|
|
|
|
iface = CLUTTER_STAGE_WINDOW_GET_IFACE (impl);
|
|
if (iface->set_cursor_visible)
|
|
{
|
|
priv->is_cursor_visible = FALSE;
|
|
|
|
iface->set_cursor_visible (impl, FALSE);
|
|
|
|
g_object_notify (G_OBJECT (stage), "cursor-visible");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_read_pixels:
|
|
* @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
|
|
*
|
|
* Makes a screenshot of the stage in RGBA 8bit data, returns a
|
|
* linear buffer with @width * 4 as rowstride.
|
|
*
|
|
* The alpha data contained in the returned buffer is driver-dependent,
|
|
* and not guaranteed to hold any sensible value.
|
|
*
|
|
* Return value: a pointer to newly allocated memory with the buffer
|
|
* or %NULL if the read failed. Use g_free() on the returned data
|
|
* to release the resources it has allocated.
|
|
*/
|
|
guchar *
|
|
clutter_stage_read_pixels (ClutterStage *stage,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
guchar *pixels;
|
|
guchar *temprow;
|
|
GLint viewport[4];
|
|
gint rowstride;
|
|
gint stage_x, stage_y, stage_width, stage_height;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
|
|
|
|
/* according to glReadPixels documentation pixels outside the viewport are
|
|
* undefined, but no error should be provoked, thus this is probably unnneed.
|
|
*/
|
|
g_return_val_if_fail (x >= 0 && y >= 0, NULL);
|
|
|
|
/* Force a redraw of the stage before reading back pixels */
|
|
clutter_redraw (stage);
|
|
clutter_stage_ensure_current (stage);
|
|
|
|
glGetIntegerv (GL_VIEWPORT, viewport);
|
|
stage_x = viewport[0];
|
|
stage_y = viewport[1];
|
|
stage_width = viewport[2];
|
|
stage_height = viewport[3];
|
|
|
|
if (width < 0 || width > stage_width)
|
|
width = stage_width;
|
|
|
|
if (height < 0 || height > stage_height)
|
|
height = stage_height;
|
|
|
|
rowstride = width * 4;
|
|
|
|
pixels = g_malloc (height * rowstride);
|
|
temprow = g_malloc (rowstride);
|
|
|
|
/* Setup the pixel store parameters that may have been changed by
|
|
Cogl */
|
|
glPixelStorei (GL_PACK_ALIGNMENT, 4);
|
|
#ifdef HAVE_COGL_GL
|
|
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
|
|
glPixelStorei (GL_PACK_SKIP_PIXELS, 0);
|
|
glPixelStorei (GL_PACK_SKIP_ROWS, 0);
|
|
#endif /* HAVE_COGL_GL */
|
|
|
|
/* The y co-ordinate should be given in OpenGL's coordinate system
|
|
so 0 is the bottom row */
|
|
y = stage_height - 1 - y - height;
|
|
|
|
glFinish ();
|
|
|
|
/* check whether we need to read into a smaller temporary buffer */
|
|
glReadPixels (x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
|
|
|
|
/* vertically flip the buffer in-place */
|
|
for (y = 0; y < height / 2; y++)
|
|
{
|
|
if (y != height - y - 1) /* skip center row */
|
|
{
|
|
memcpy (temprow,
|
|
pixels + y * rowstride, rowstride);
|
|
memcpy (pixels + y * rowstride,
|
|
pixels + (height - y - 1) * rowstride, rowstride);
|
|
memcpy (pixels + (height - y - 1) * rowstride,
|
|
temprow,
|
|
rowstride);
|
|
}
|
|
}
|
|
|
|
g_free (temprow);
|
|
|
|
return pixels;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
return _clutter_do_pick (stage, x, y, CLUTTER_PICK_ALL);
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* synthetised events.
|
|
*
|
|
* Return value: the return value from the signal emission
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
gboolean
|
|
clutter_stage_event (ClutterStage *stage,
|
|
ClutterEvent *event)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
priv = stage->priv;
|
|
|
|
if (event->type == CLUTTER_DELETE)
|
|
{
|
|
gboolean retval = FALSE;
|
|
|
|
g_signal_emit_by_name (stage, "event", event, &retval);
|
|
|
|
return retval;
|
|
}
|
|
|
|
if (event->type != CLUTTER_STAGE_STATE)
|
|
return FALSE;
|
|
|
|
/* emit raw event */
|
|
if (clutter_actor_event (CLUTTER_ACTOR (stage), event, FALSE))
|
|
return TRUE;
|
|
|
|
if (event->stage_state.changed_mask & CLUTTER_STAGE_STATE_FULLSCREEN)
|
|
{
|
|
if (event->stage_state.new_state & CLUTTER_STAGE_STATE_FULLSCREEN)
|
|
{
|
|
priv->is_fullscreen = TRUE;
|
|
g_signal_emit (stage, stage_signals[FULLSCREEN], 0);
|
|
|
|
g_object_notify (G_OBJECT (stage), "fullscreen");
|
|
}
|
|
else
|
|
{
|
|
priv->is_fullscreen = FALSE;
|
|
g_signal_emit (stage, stage_signals[UNFULLSCREEN], 0);
|
|
|
|
g_object_notify (G_OBJECT (stage), "fullscreen");
|
|
}
|
|
}
|
|
|
|
if (event->stage_state.changed_mask & CLUTTER_STAGE_STATE_ACTIVATED)
|
|
{
|
|
if (event->stage_state.new_state & CLUTTER_STAGE_STATE_ACTIVATED)
|
|
g_signal_emit (stage, stage_signals[ACTIVATE], 0);
|
|
else
|
|
g_signal_emit (stage, stage_signals[DEACTIVATE], 0);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
ClutterStageWindow *impl;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
priv = stage->priv;
|
|
|
|
g_free (priv->title);
|
|
priv->title = g_strdup (title);
|
|
|
|
impl = CLUTTER_STAGE_WINDOW (priv->impl);
|
|
if (CLUTTER_STAGE_WINDOW_GET_IFACE(impl)->set_title != NULL)
|
|
CLUTTER_STAGE_WINDOW_GET_IFACE (impl)->set_title (impl, 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;
|
|
}
|
|
|
|
static void
|
|
on_key_focused_weak_notify (gpointer data,
|
|
GObject *where_the_object_was)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
ClutterStage *stage = CLUTTER_STAGE (data);
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
priv = stage->priv;
|
|
priv->key_focused_actor = NULL;
|
|
|
|
/* focused actor has dissapeared - fall back to stage
|
|
* FIXME: need some kind of signal dance/block here.
|
|
*/
|
|
clutter_stage_set_key_focus (stage, NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_key_focus:
|
|
* @stage: the #ClutterStage
|
|
* @actor: the actor to set key focus to, or %NULL
|
|
*
|
|
* Sets the key focus on @actor. An actor with key focus will receive
|
|
* all the key events. If @actor is %NULL, the stage will receive
|
|
* focus.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_stage_set_key_focus (ClutterStage *stage,
|
|
ClutterActor *actor)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
g_return_if_fail (actor == NULL || CLUTTER_IS_ACTOR (actor));
|
|
|
|
priv = stage->priv;
|
|
|
|
if (priv->key_focused_actor == actor)
|
|
return;
|
|
|
|
if (priv->key_focused_actor)
|
|
{
|
|
g_object_weak_unref (G_OBJECT (priv->key_focused_actor),
|
|
on_key_focused_weak_notify,
|
|
stage);
|
|
g_signal_emit_by_name (priv->key_focused_actor, "focus-out");
|
|
|
|
priv->key_focused_actor = NULL;
|
|
}
|
|
else
|
|
g_signal_emit_by_name (stage, "focus-out");
|
|
|
|
if (actor)
|
|
{
|
|
priv->key_focused_actor = actor;
|
|
|
|
g_object_weak_ref (G_OBJECT (actor),
|
|
on_key_focused_weak_notify,
|
|
stage);
|
|
g_signal_emit_by_name (priv->key_focused_actor, "focus-in");
|
|
}
|
|
else
|
|
g_signal_emit_by_name (stage, "focus-in");
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_key_focus:
|
|
* @stage: the #ClutterStage
|
|
*
|
|
* Retrieves the actor that is currently under key focus.
|
|
*
|
|
* Return value: the actor with key focus, or the stage
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
ClutterActor *
|
|
clutter_stage_get_key_focus (ClutterStage *stage)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
|
|
|
|
if (stage->priv->key_focused_actor)
|
|
return stage->priv->key_focused_actor;
|
|
|
|
return CLUTTER_ACTOR (stage);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_use_fog:
|
|
* @stage: the #ClutterStage
|
|
*
|
|
* Gets whether the depth cueing effect is enabled on @stage.
|
|
*
|
|
* Return value: %TRUE if the the depth cueing effect is enabled
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
gboolean
|
|
clutter_stage_get_use_fog (ClutterStage *stage)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), FALSE);
|
|
|
|
return stage->priv->use_fog;
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_use_fog:
|
|
* @stage: the #ClutterStage
|
|
* @fog: %TRUE for enabling the depth cueing effect
|
|
*
|
|
* Sets whether the depth cueing effect on the stage should be enabled
|
|
* or not.
|
|
*
|
|
* Depth cueing is a 3D effect that makes actors farther away from the
|
|
* viewing point less opaque, by fading them with the stage color.
|
|
|
|
* The parameters of the GL fog used can be changed using the
|
|
* clutter_stage_set_fog() function.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_stage_set_use_fog (ClutterStage *stage,
|
|
gboolean fog)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
priv = stage->priv;
|
|
|
|
if (priv->use_fog != fog)
|
|
{
|
|
priv->use_fog = fog;
|
|
|
|
CLUTTER_NOTE (MISC, "%s depth-cueing inside stage",
|
|
priv->use_fog ? "enabling" : "disabling");
|
|
|
|
if (CLUTTER_ACTOR_IS_VISIBLE (stage))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
|
|
|
|
g_object_notify (G_OBJECT (stage), "use-fog");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_fog:
|
|
* @stage: a #ClutterStage
|
|
* @density: return location for the intensity dampening
|
|
* @z_near: return location for the starting point of the depth cueing
|
|
* @z_far: return location for the ending point of the depth cueing
|
|
*
|
|
* Retrieves the settings used by the GL fog to create the
|
|
* depth cueing effect on the @stage.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_stage_get_fog (ClutterStage *stage,
|
|
gdouble *density,
|
|
gdouble *z_near,
|
|
gdouble *z_far)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
priv = stage->priv;
|
|
|
|
if (density)
|
|
*density = CLUTTER_FIXED_TO_FLOAT (priv->fog.density);
|
|
if (z_near)
|
|
*z_near = CLUTTER_FIXED_TO_FLOAT (priv->fog.z_near);
|
|
if (z_far)
|
|
*z_far = CLUTTER_FIXED_TO_FLOAT (priv->fog.z_far);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_fog:
|
|
* @stage: the #ClutterStage
|
|
* @density: density of the intensity dampening
|
|
* @z_near: starting point of the depth cueing
|
|
* @z_far: ending point of the depth cueing
|
|
*
|
|
* Sets the GL fog settings used to create the depth cueing effect
|
|
* on the @stage.
|
|
*
|
|
* If the actors are all near the view point you will need a higher @density
|
|
* and a smaller interval between @z_near and @z_far. On the other hand, if
|
|
* actors are placed far away from the view point you will need a lower
|
|
* @density but a bigger interval between @z_near and @z_far.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_stage_set_fog (ClutterStage *stage,
|
|
gdouble density,
|
|
gdouble z_near,
|
|
gdouble z_far)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
priv = stage->priv;
|
|
|
|
priv->fog.density = CLUTTER_FLOAT_TO_FIXED (density);
|
|
priv->fog.z_near = CLUTTER_FLOAT_TO_FIXED (z_near);
|
|
priv->fog.z_far = CLUTTER_FLOAT_TO_FIXED (z_far);
|
|
|
|
if (priv->use_fog && CLUTTER_ACTOR_IS_VISIBLE (stage))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_set_fogx:
|
|
* @stage: the #ClutterStage
|
|
* @fog: a #ClutterFog structure
|
|
*
|
|
* Sets the depth cueing settings for the @stage. This is the fixed point
|
|
* version of clutter_stage_set_fog().
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_stage_set_fogx (ClutterStage *stage,
|
|
ClutterFog *fog)
|
|
{
|
|
ClutterStagePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
g_return_if_fail (fog != NULL);
|
|
|
|
priv = stage->priv;
|
|
|
|
priv->fog = *fog;
|
|
|
|
if (priv->use_fog && CLUTTER_ACTOR_IS_VISIBLE (stage))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_fogx:
|
|
* @stage: the #ClutterStage
|
|
* @fog: return location for a #ClutterFog structure
|
|
*
|
|
* Retrieves the current depth cueing settings from the stage. This is the
|
|
* fixed point version of clutter_stage_get_fog().
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_stage_get_fogx (ClutterStage *stage,
|
|
ClutterFog *fog)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
g_return_if_fail (fog != NULL);
|
|
|
|
*fog = stage->priv->fog;
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_resolution:
|
|
* @stage: the #ClutterStage
|
|
*
|
|
* Retrieves the resolution (in DPI) of the stage from the default
|
|
* backend.
|
|
*
|
|
* Return value: the resolution of the stage
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
gdouble
|
|
clutter_stage_get_resolution (ClutterStage *stage)
|
|
{
|
|
ClutterMainContext *context;
|
|
|
|
context = clutter_context_get_default ();
|
|
g_assert (context != NULL);
|
|
|
|
return clutter_backend_get_resolution (context->backend);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_get_resolutionx:
|
|
* @stage: the #ClutterStage
|
|
*
|
|
* Fixed point version of clutter_stage_get_resolution().
|
|
*
|
|
* Return value: the resolution of the stage
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
ClutterFixed
|
|
clutter_stage_get_resolutionx (ClutterStage *stage)
|
|
{
|
|
ClutterFixed res;
|
|
ClutterMainContext *context;
|
|
|
|
context = clutter_context_get_default ();
|
|
g_assert (context != NULL);
|
|
|
|
res = clutter_backend_get_resolution (context->backend);
|
|
|
|
return CLUTTER_FLOAT_TO_FIXED (res);
|
|
}
|
|
|
|
/*** Perspective boxed type ******/
|
|
|
|
static 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;
|
|
}
|
|
|
|
static void
|
|
clutter_perspective_free (ClutterPerspective *perspective)
|
|
{
|
|
if (G_LIKELY (perspective))
|
|
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 (I_("ClutterPerspective"),
|
|
(GBoxedCopyFunc) clutter_perspective_copy,
|
|
(GBoxedFreeFunc) clutter_perspective_free);
|
|
return our_type;
|
|
}
|
|
|
|
static ClutterFog *
|
|
clutter_fog_copy (const ClutterFog *fog)
|
|
{
|
|
ClutterFog *copy;
|
|
|
|
g_return_val_if_fail (fog != NULL, NULL);
|
|
|
|
copy = g_slice_new0 (ClutterFog);
|
|
*copy = *fog;
|
|
|
|
return copy;
|
|
}
|
|
|
|
static void
|
|
clutter_fog_free (ClutterFog *fog)
|
|
{
|
|
if (G_LIKELY (fog))
|
|
g_slice_free (ClutterFog, fog);
|
|
}
|
|
|
|
GType
|
|
clutter_fog_get_type (void)
|
|
{
|
|
static GType our_type = 0;
|
|
|
|
if (G_UNLIKELY (our_type == 0))
|
|
our_type =
|
|
g_boxed_type_register_static (I_("ClutterFog"),
|
|
(GBoxedCopyFunc) clutter_fog_copy,
|
|
(GBoxedFreeFunc) clutter_fog_free);
|
|
|
|
return our_type;
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_new:
|
|
*
|
|
* Creates a new, non-default stage. A non-default stage is a new
|
|
* top-level actor which can be used as another container. It works
|
|
* exactly like the default stage, but while clutter_stage_get_default()
|
|
* will always return the same instance, you will have to keep a pointer
|
|
* to any #ClutterStage returned by clutter_stage_create().
|
|
*
|
|
* The ability to support multiple stages depends on the current
|
|
* backend. Use clutter_feature_available() and
|
|
* %CLUTTER_FEATURE_STAGE_MULTIPLE to check at runtime whether a
|
|
* backend supports multiple stages.
|
|
*
|
|
* Return value: a new stage, or %NULL if the default backend does
|
|
* not support multiple stages. Use clutter_actor_destroy() to
|
|
* programmatically close the returned stage.
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
ClutterActor *
|
|
clutter_stage_new (void)
|
|
{
|
|
if (!clutter_feature_available (CLUTTER_FEATURE_STAGE_MULTIPLE))
|
|
{
|
|
g_warning ("Unable to create a new stage: the %s backend does not "
|
|
"support multiple stages.",
|
|
CLUTTER_FLAVOUR);
|
|
return NULL;
|
|
}
|
|
|
|
/* The stage manager will grab the floating reference when the stage
|
|
is added to it in the constructor */
|
|
return g_object_new (CLUTTER_TYPE_STAGE, NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_ensure_current:
|
|
* @stage: the #ClutterStage
|
|
*
|
|
* This function essentially makes sure the right GL context is
|
|
* current for the passed stage. It is not intended to
|
|
* be used by applications.
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
void
|
|
clutter_stage_ensure_current (ClutterStage *stage)
|
|
{
|
|
ClutterMainContext *ctx = clutter_context_get_default ();
|
|
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
_clutter_backend_ensure_context (ctx->backend, stage);
|
|
}
|
|
|
|
static gboolean
|
|
redraw_update_idle (gpointer user_data)
|
|
{
|
|
ClutterStage *stage = user_data;
|
|
ClutterStagePrivate *priv = stage->priv;
|
|
|
|
if (priv->update_idle)
|
|
{
|
|
g_source_remove (priv->update_idle);
|
|
priv->update_idle = 0;
|
|
}
|
|
|
|
CLUTTER_NOTE (MULTISTAGE, "redrawing via idle for stage:%p", stage);
|
|
clutter_redraw (stage);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_queue_redraw:
|
|
* @stage: the #ClutterStage
|
|
*
|
|
* Queues a redraw for the passed stage.
|
|
*
|
|
* <note>Applications should call clutter_actor_queue_redraw() and not
|
|
* this function.</note>
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
void
|
|
clutter_stage_queue_redraw (ClutterStage *stage)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
|
|
if (!stage->priv->update_idle)
|
|
{
|
|
CLUTTER_TIMESTAMP (SCHEDULER, "Adding idle source for stage: %p", stage);
|
|
|
|
/* FIXME: weak_ref self in case we dissapear before paint? */
|
|
stage->priv->update_idle =
|
|
clutter_threads_add_idle_full (CLUTTER_PRIORITY_REDRAW,
|
|
redraw_update_idle,
|
|
stage,
|
|
NULL);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_stage_is_default:
|
|
* @stage: a #ClutterStage
|
|
*
|
|
* Checks if @stage is the default stage, or an instance created using
|
|
* clutter_stage_new() but internally using the same implementation.
|
|
*
|
|
* Return value: %TRUE if the passed stage is the default one
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
gboolean
|
|
clutter_stage_is_default (ClutterStage *stage)
|
|
{
|
|
ClutterStageWindow *impl;
|
|
|
|
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), FALSE);
|
|
|
|
if (CLUTTER_ACTOR (stage) == clutter_stage_get_default ())
|
|
return TRUE;
|
|
|
|
impl = _clutter_stage_get_window (stage);
|
|
if (impl == _clutter_stage_get_default_window ())
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
_clutter_stage_set_window (ClutterStage *stage,
|
|
ClutterStageWindow *stage_window)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_STAGE (stage));
|
|
g_return_if_fail (CLUTTER_IS_STAGE_WINDOW (stage_window));
|
|
|
|
if (stage->priv->impl)
|
|
g_object_unref (stage->priv->impl);
|
|
|
|
stage->priv->impl = CLUTTER_ACTOR (stage_window);
|
|
}
|
|
|
|
ClutterStageWindow *
|
|
_clutter_stage_get_window (ClutterStage *stage)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_STAGE (stage), NULL);
|
|
|
|
return CLUTTER_STAGE_WINDOW (stage->priv->impl);
|
|
}
|
|
|
|
ClutterStageWindow *
|
|
_clutter_stage_get_default_window (void)
|
|
{
|
|
ClutterActor *stage = clutter_stage_get_default ();
|
|
|
|
return _clutter_stage_get_window (CLUTTER_STAGE (stage));
|
|
}
|