77ec8774a0
Revert all the work that happened on the master branch.
Sadly, this is the only way to merge the current development branch back
into master.
It is now abundantly clear that I merged the 1.99 branch far too soon,
and that Clutter 2.0 won't happen any time soon, if at all.
Since having the development happen on a separate branch throws a lot of
people into confusion, let's undo the clutter-1.99 → master merge, and
move back the development of Clutter to the master branch.
In order to do so, we need to do some surgery to the Git repository.
First, we do a massive revert in a single commit of all that happened
since the switch to 1.99 and the API version bump done with the
89a2862b05 commit. The history is too long
to be reverted commit by commit without being extremely messy.
305 lines
8.4 KiB
C
305 lines
8.4 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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* Copyright (C) 2011 Intel Corporation.
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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, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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/**
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* SECTION:clutter-content
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* @Title: ClutterContent
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* @Short_Description: Delegate for painting the content of an actor
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*
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* #ClutterContent is an interface to implement types responsible for
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* painting the content of a #ClutterActor.
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*
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* Multiple actors can use the same #ClutterContent instance, in order
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* to share the resources associated with painting the same content.
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*
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* #ClutterContent is available since Clutter 1.10.
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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-content-private.h"
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#include "clutter-debug.h"
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#include "clutter-marshal.h"
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#include "clutter-private.h"
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typedef struct _ClutterContentIface ClutterContentInterface;
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enum
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{
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ATTACHED,
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DETACHED,
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LAST_SIGNAL
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};
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static GQuark quark_content_actors = 0;
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static guint content_signals[LAST_SIGNAL] = { 0, };
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G_DEFINE_INTERFACE (ClutterContent, clutter_content, G_TYPE_OBJECT)
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static gboolean
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clutter_content_real_get_preferred_size (ClutterContent *content,
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gfloat *width,
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gfloat *height)
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{
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if (width != NULL)
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*width = 0.f;
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if (height != NULL)
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*height = 0.f;
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return FALSE;
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}
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static void
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clutter_content_real_attached (ClutterContent *content,
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ClutterActor *actor)
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{
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}
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static void
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clutter_content_real_detached (ClutterContent *content,
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ClutterActor *actor)
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{
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}
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static void
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clutter_content_real_invalidate (ClutterContent *content)
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{
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}
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static void
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clutter_content_real_paint_content (ClutterContent *content,
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ClutterActor *actor,
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ClutterPaintNode *context)
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{
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}
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static void
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clutter_content_default_init (ClutterContentInterface *iface)
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{
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quark_content_actors = g_quark_from_static_string ("-clutter-content-actors");
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iface->get_preferred_size = clutter_content_real_get_preferred_size;
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iface->paint_content = clutter_content_real_paint_content;
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iface->attached = clutter_content_real_attached;
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iface->detached = clutter_content_real_detached;
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iface->invalidate = clutter_content_real_invalidate;
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/**
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* ClutterContent::attached:
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* @content: the object that emitted the signal
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* @actor: a #ClutterActor
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*
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* This signal is emitted each time a #ClutterContent implementation is
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* assigned to a #ClutterActor.
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*
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* Since: 1.10
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*/
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content_signals[ATTACHED] =
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g_signal_new (I_("attached"),
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G_TYPE_FROM_INTERFACE (iface),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (ClutterContentIface, attached),
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NULL, NULL,
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_clutter_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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CLUTTER_TYPE_ACTOR);
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/**
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* ClutterContent::detached:
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* @content: the object that emitted the signal
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* @actor: a #ClutterActor
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*
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* This signal is emitted each time a #ClutterContent implementation is
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* removed from a #ClutterActor.
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*
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* Since: 1.10
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*/
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content_signals[DETACHED] =
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g_signal_new (I_("detached"),
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G_TYPE_FROM_INTERFACE (iface),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (ClutterContentIface, detached),
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NULL, NULL,
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_clutter_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1,
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CLUTTER_TYPE_ACTOR);
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}
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/**
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* clutter_content_invalidate:
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* @content: a #ClutterContent
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*
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* Invalidates a #ClutterContent.
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*
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* This function should be called by #ClutterContent implementations when
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* they change the way a the content should be painted regardless of the
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* actor state.
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*
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* Since: 1.10
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*/
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void
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clutter_content_invalidate (ClutterContent *content)
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{
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GHashTable *actors;
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GHashTableIter iter;
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gpointer key_p, value_p;
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g_return_if_fail (CLUTTER_IS_CONTENT (content));
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CLUTTER_CONTENT_GET_IFACE (content)->invalidate (content);
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actors = g_object_get_qdata (G_OBJECT (content), quark_content_actors);
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if (actors == NULL)
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return;
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g_hash_table_iter_init (&iter, actors);
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while (g_hash_table_iter_next (&iter, &key_p, &value_p))
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{
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ClutterActor *actor = key_p;
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g_assert (actor != NULL);
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clutter_actor_queue_redraw (actor);
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}
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}
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/*< private >
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* _clutter_content_attached:
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* @content: a #ClutterContent
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* @actor: a #ClutterActor
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*
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* Attaches @actor to the @content.
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*
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* This function should be used internally every time a #ClutterActor
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* is associated to a #ClutterContent, to set up a backpointer from
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* the @content to the @actor.
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*
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* This function will invoke the #ClutterContentIface.attached() virtual
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* function.
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*/
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void
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_clutter_content_attached (ClutterContent *content,
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ClutterActor *actor)
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{
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GObject *obj = G_OBJECT (content);
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GHashTable *actors;
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actors = g_object_get_qdata (obj, quark_content_actors);
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if (actors == NULL)
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{
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actors = g_hash_table_new (NULL, NULL);
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g_object_set_qdata_full (obj, quark_content_actors,
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actors,
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(GDestroyNotify) g_hash_table_unref);
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}
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g_hash_table_insert (actors, actor, actor);
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g_signal_emit (content, content_signals[ATTACHED], 0, actor);
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}
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/*< private >
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* _clutter_content_detached:
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* @content: a #ClutterContent
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* @actor: a #ClutterActor
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*
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* Detaches @actor from @content.
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*
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* This function should be used internally every time a #ClutterActor
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* removes the association with a #ClutterContent.
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*
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* This function will invoke the #ClutterContentIface.detached() virtual
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* function.
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*/
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void
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_clutter_content_detached (ClutterContent *content,
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ClutterActor *actor)
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{
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GObject *obj = G_OBJECT (content);
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GHashTable *actors;
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actors = g_object_get_qdata (obj, quark_content_actors);
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g_assert (actors != NULL);
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g_hash_table_remove (actors, actor);
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if (g_hash_table_size (actors) == 0)
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g_object_set_qdata (obj, quark_content_actors, NULL);
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g_signal_emit (content, content_signals[DETACHED], 0, actor);
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}
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/*< private >
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* _clutter_content_paint_content:
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* @content: a #ClutterContent
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* @actor: a #ClutterActor
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* @context: a #ClutterPaintNode
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*
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* Creates the render tree for the @content and @actor.
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*
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* This function will invoke the #ClutterContentIface.paint_content()
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* virtual function.
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*/
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void
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_clutter_content_paint_content (ClutterContent *content,
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ClutterActor *actor,
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ClutterPaintNode *node)
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{
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CLUTTER_CONTENT_GET_IFACE (content)->paint_content (content, actor, node);
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}
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/**
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* clutter_content_get_preferred_size:
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* @content: a #ClutterContent
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* @width: (out): return location for the natural width of the content
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* @height: (out): return location for the natural height of the content
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*
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* Retrieves the natural size of the @content, if any.
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*
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* The natural size of a #ClutterContent is defined as the size the content
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* would have regardless of the allocation of the actor that is painting it,
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* for instance the size of an image data.
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*
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* Return value: %TRUE if the content has a preferred size, and %FALSE
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* otherwise
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*
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* Since: 1.10
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*/
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gboolean
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clutter_content_get_preferred_size (ClutterContent *content,
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gfloat *width,
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gfloat *height)
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{
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g_return_val_if_fail (CLUTTER_IS_CONTENT (content), FALSE);
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return CLUTTER_CONTENT_GET_IFACE (content)->get_preferred_size (content,
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width,
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height);
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}
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