mirror of
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ad64200aa7
* clutter/clutter-actor.[ch]: Use GInitiallyUnowned as the parent structure in the ClutterActor structure definition; somehow, this has escaped everyone attention in one year and a half. Luckily, GInitiallyUnowned is as big as GObject. (clutter_actor_get_abs_position_units), (clutter_actor_get_abs_position): Check parameters. * clutter/clutter-texture.h: Unmangle the flags enum type declaration, so that dumb parsers like h2defs.py are not fooled. * clutter/clutter-behaviour-ellipse.[ch]: * clutter/clutter-effect.c: Fix some documentation issues and make gtk-doc happy.
718 lines
20 KiB
C
718 lines
20 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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* Jorn Baayen <jorn@openedhand.com>
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* Emmanuele Bassi <ebassi@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-effect
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* @short_description: Utility Class for basic visual effects
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*
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* The #ClutterEffectTemplate class provides a simple API for applying
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* pre-defined effects to a single actor. It works as a wrapper around
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* the #ClutterBehaviour objects
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*
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* Since: 0.4
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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 <math.h>
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#include "clutter-alpha.h"
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#include "clutter-main.h"
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#include "clutter-marshal.h"
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#include "clutter-private.h"
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#include "clutter-debug.h"
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#include "clutter-behaviour-bspline.h"
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#include "clutter-behaviour-ellipse.h"
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#include "clutter-behaviour-opacity.h"
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#include "clutter-behaviour-path.h"
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#include "clutter-behaviour-rotate.h"
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#include "clutter-behaviour-scale.h"
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#include "clutter-effect.h"
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typedef struct ClutterEffectClosure
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{
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ClutterActor *actor;
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ClutterTimeline *timeline;
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ClutterAlpha *alpha;
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ClutterBehaviour *behave;
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gulong signal_id;
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ClutterEffectCompleteFunc completed_func;
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gpointer completed_data;
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ClutterEffectTemplate *template;
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}
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ClutterEffectClosure;
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G_DEFINE_TYPE (ClutterEffectTemplate, clutter_effect_template, G_TYPE_OBJECT);
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#define EFFECT_TEMPLATE_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((o), \
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CLUTTER_TYPE_EFFECT_TEMPLATE, \
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ClutterEffectTemplatePrivate))
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struct _ClutterEffectTemplatePrivate
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{
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ClutterTimeline *timeline;
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ClutterAlphaFunc alpha_func;
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gpointer alpha_data;
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GDestroyNotify alpha_notify;
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};
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enum
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{
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PROP_0,
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PROP_ALPHA_FUNC,
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PROP_TIMELINE,
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};
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static void
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clutter_effect_template_finalize (GObject *gobject)
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{
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ClutterEffectTemplate *template = CLUTTER_EFFECT_TEMPLATE (gobject);
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ClutterEffectTemplatePrivate *priv = template->priv;
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if (priv->alpha_notify)
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{
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priv->alpha_notify (priv->alpha_data);
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priv->alpha_notify = NULL;
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}
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priv->alpha_data = NULL;
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priv->alpha_func = NULL;
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G_OBJECT_CLASS (clutter_effect_template_parent_class)->finalize (gobject);
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}
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static void
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clutter_effect_template_dispose (GObject *object)
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{
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ClutterEffectTemplate *template;
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ClutterEffectTemplatePrivate *priv;
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template = CLUTTER_EFFECT_TEMPLATE (object);
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priv = template->priv;
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if (priv->timeline)
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{
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g_object_unref (priv->timeline);
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priv->timeline = NULL;
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}
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G_OBJECT_CLASS (clutter_effect_template_parent_class)->dispose (object);
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}
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static void
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clutter_effect_template_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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ClutterEffectTemplate *template;
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ClutterEffectTemplatePrivate *priv;
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template = CLUTTER_EFFECT_TEMPLATE (object);
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priv = template->priv;
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switch (prop_id)
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{
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case PROP_ALPHA_FUNC:
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priv->alpha_func = g_value_get_pointer (value);
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break;
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case PROP_TIMELINE:
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priv->timeline = g_value_get_object (value);
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g_object_ref(priv->timeline);
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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_effect_template_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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ClutterEffectTemplate *template;
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ClutterEffectTemplatePrivate *priv;
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template = CLUTTER_EFFECT_TEMPLATE (object);
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priv = template->priv;
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switch (prop_id)
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{
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case PROP_ALPHA_FUNC:
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g_value_set_pointer (value, priv->alpha_func);
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break;
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case PROP_TIMELINE:
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g_value_set_object (value, priv->timeline);
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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_effect_template_class_init (ClutterEffectTemplateClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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g_type_class_add_private (klass, sizeof (ClutterEffectTemplatePrivate));
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object_class->finalize = clutter_effect_template_finalize;
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object_class->dispose = clutter_effect_template_dispose;
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object_class->set_property = clutter_effect_template_set_property;
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object_class->get_property = clutter_effect_template_get_property;
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/**
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* ClutterEffectTemplate:alpha-func:
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*
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* #ClutterAlphaFunc to be used by the template
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*
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* Since: 0.4
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*/
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g_object_class_install_property
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(object_class,
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PROP_ALPHA_FUNC,
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g_param_spec_pointer ("alpha-func",
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"Alpha-Function",
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"Alpha reference Function",
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G_PARAM_CONSTRUCT_ONLY |
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CLUTTER_PARAM_READWRITE));
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/**
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* ClutterEffectTemplate:timeline:
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*
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* #ClutterTimeline to be used by the template
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*
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* Since: 0.4
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*/
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g_object_class_install_property
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(object_class,
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PROP_TIMELINE,
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g_param_spec_object ("timeline",
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"Timeline",
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"Timeline to use as a reference for the Template",
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CLUTTER_TYPE_TIMELINE,
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G_PARAM_CONSTRUCT_ONLY |
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CLUTTER_PARAM_READWRITE));
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}
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static void
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clutter_effect_template_init (ClutterEffectTemplate *self)
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{
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self->priv = EFFECT_TEMPLATE_PRIVATE (self);
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}
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static void
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clutter_effect_template_set_alpha_func (ClutterEffectTemplate *self,
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ClutterAlphaFunc alpha_func,
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gpointer alpha_data,
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GDestroyNotify alpha_notify)
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{
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ClutterEffectTemplatePrivate *priv;
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priv = self->priv;
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if (priv->alpha_notify)
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{
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priv->alpha_notify (priv->alpha_data);
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priv->alpha_notify = NULL;
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}
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priv->alpha_data = alpha_data;
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priv->alpha_notify = alpha_notify;
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priv->alpha_func = alpha_func;
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}
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/**
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* clutter_effect_template_new:
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* @timeline: A #ClutterTimeline for the template (will be cloned)
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* @alpha_func: An alpha func to use for the template.
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*
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* Creates a new #ClutterEffectTemplate, to be used with the effects API.
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*
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* A #ClutterEffectTemplate binds a timeline and an alpha function and can
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* be used as a template for multiple calls of clutter_effect_fade(),
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* clutter_effect_move() and clutter_effect_scale().
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*
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* This API is intended for simple animations involving a single actor;
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* for more complex animations, you should see #ClutterBehaviour and the
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* derived classes.
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*
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* Return value: a #ClutterEffectTemplate
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*
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* Since: 0.4
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*/
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ClutterEffectTemplate *
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clutter_effect_template_new (ClutterTimeline *timeline,
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ClutterAlphaFunc alpha_func)
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{
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ClutterEffectTemplate *retval;
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g_return_val_if_fail (CLUTTER_IS_TIMELINE (timeline), NULL);
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g_return_val_if_fail (alpha_func != NULL, NULL);
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retval = g_object_new (CLUTTER_TYPE_EFFECT_TEMPLATE,
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"timeline", timeline,
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NULL);
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clutter_effect_template_set_alpha_func (retval, alpha_func, NULL, NULL);
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return retval;
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}
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/**
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* clutter_effect_template_new_full:
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* @timeline: a #ClutterTimeline
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* @alpha_func: an alpha function to use for the template
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* @user_data: data to be passed to the alpha function, or %NULL
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* @notify: function to be called when disposing the alpha function's use
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* data, or %NULL
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*
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* Creates a new #ClutterEffectTemplate, to be used with the effects API.
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*
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* A #ClutterEffectTemplate binds a timeline and an alpha function and can
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* be used as a template for multiple calls of clutter_effect_fade(),
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* clutter_effect_move() and clutter_effect_scale().
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*
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* This API is intended for simple animations involving a single actor;
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* for more complex animations, you should see #ClutterBehaviour and the
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* derived classes.
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*
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* This function is intended for language bindings only: if @notify is
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* not %NULL it will be called to dispose of @user_data.
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*
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* Return value: the newly created #ClutterEffectTemplate object
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*
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* Since: 0.4
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*/
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ClutterEffectTemplate *
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clutter_effect_template_new_full (ClutterTimeline *timeline,
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ClutterAlphaFunc alpha_func,
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gpointer user_data,
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GDestroyNotify notify)
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{
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ClutterEffectTemplate *retval;
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g_return_val_if_fail (CLUTTER_IS_TIMELINE (timeline), NULL);
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g_return_val_if_fail (alpha_func != NULL, NULL);
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retval = g_object_new (CLUTTER_TYPE_EFFECT_TEMPLATE,
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"timeline", timeline,
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NULL);
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clutter_effect_template_set_alpha_func (retval, alpha_func, user_data, notify);
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return retval;
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}
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static void
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clutter_effect_closure_destroy (ClutterEffectClosure *c)
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{
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g_signal_handler_disconnect (c->timeline, c->signal_id);
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clutter_behaviour_remove (c->behave, c->actor);
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g_object_unref (c->actor);
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g_object_unref (c->template);
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g_object_unref (c->behave);
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g_object_unref (c->alpha);
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g_object_unref (c->timeline);
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g_slice_free (ClutterEffectClosure, c);
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}
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static ClutterEffectClosure *
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clutter_effect_closure_new (ClutterEffectTemplate *template,
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ClutterActor *actor,
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GCallback complete)
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{
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ClutterEffectClosure *c;
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ClutterEffectTemplatePrivate *priv = EFFECT_TEMPLATE_PRIVATE(template);
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c = g_slice_new0(ClutterEffectClosure);
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g_object_ref (actor);
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g_object_ref (template);
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c->template = template;
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c->actor = actor;
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c->timeline = clutter_timeline_clone (priv->timeline);
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c->alpha = clutter_alpha_new_full (c->timeline,
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priv->alpha_func,
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priv->alpha_data,
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NULL);
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c->signal_id =
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g_signal_connect (c->timeline, "completed",G_CALLBACK (complete), c);
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return c;
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}
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static void
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on_effect_complete (ClutterTimeline *timeline,
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gpointer user_data)
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{
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ClutterEffectClosure *c = (ClutterEffectClosure*)user_data;
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if (c->completed_func)
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c->completed_func(c->actor, c->completed_data);
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clutter_effect_closure_destroy (c);
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}
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/**
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* clutter_effect_fade:
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* @template_: A #ClutterEffectTemplate
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* @actor: A #ClutterActor to apply the effect to.
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* @start_opacity: Initial opacity value to apply to actor
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* @end_opacity: Final opacity value to apply to actor
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* @completed_func: A #ClutterEffectCompleteFunc to call on effect
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* completion or %NULL
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* @completed_data: Data to pass to supplied #ClutterEffectCompleteFunc
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* or %NULL
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*
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* Simple effect for fading a single #ClutterActor.
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*
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* Return value: a #ClutterTimeline for the effect. Will be unrefed by
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* the effect when completed.
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*
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* Since: 0.4
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*/
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ClutterTimeline *
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clutter_effect_fade (ClutterEffectTemplate *template_,
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ClutterActor *actor,
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guint8 start_opacity,
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guint8 end_opacity,
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ClutterEffectCompleteFunc completed_func,
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gpointer completed_data)
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{
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ClutterEffectClosure *c;
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c = clutter_effect_closure_new (template_,
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actor,
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G_CALLBACK (on_effect_complete));
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c->completed_func = completed_func;
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c->completed_data = completed_data;
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clutter_actor_set_opacity (actor, start_opacity);
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c->behave = clutter_behaviour_opacity_new (c->alpha,
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start_opacity,
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end_opacity);
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clutter_behaviour_apply (c->behave, actor);
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clutter_timeline_start (c->timeline);
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return c->timeline;
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}
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/**
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* clutter_effect_move:
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* @template_: A #ClutterEffectTemplate
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* @actor: A #ClutterActor to apply the effect to.
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* @knots: An array of #ClutterKnots representing path for the actor
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* @n_knots: Number of #ClutterKnots in passed array.
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* @completed_func: A #ClutterEffectCompleteFunc to call on effect
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* completion or %NULL
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* @completed_data: Data to pass to supplied #ClutterEffectCompleteFunc
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* or %NULL
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*
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* Simple effect for moving a single #ClutterActor along a path.
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*
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* Return value: a #ClutterTimeline for the effect. Will be unreferenced by
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* the effect when completed.
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*
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* Since: 0.4
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*/
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ClutterTimeline *
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clutter_effect_move (ClutterEffectTemplate *template_,
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ClutterActor *actor,
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const ClutterKnot *knots,
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guint n_knots,
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ClutterEffectCompleteFunc completed_func,
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gpointer completed_data)
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{
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ClutterEffectClosure *c;
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c = clutter_effect_closure_new (template_,
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actor,
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G_CALLBACK (on_effect_complete));
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c->completed_func = completed_func;
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c->completed_data = completed_data;
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if (n_knots)
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clutter_actor_set_position (actor, knots[0].x, knots[0].y);
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c->behave = clutter_behaviour_path_new (c->alpha, knots, n_knots);
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clutter_behaviour_apply (c->behave, actor);
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clutter_timeline_start (c->timeline);
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return c->timeline;
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}
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/**
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* clutter_effect_scale:
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* @template_: A #ClutterEffectTemplate
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* @actor: A #ClutterActor to apply the effect to.
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* @scale_begin: Initial scale factor to apply to actor
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* @scale_end: Final scale factor to apply to actor
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* @gravity: A #ClutterGravity for the scale.
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* @completed_func: A #ClutterEffectCompleteFunc to call on effect
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* completion or NULL
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* @completed_data: Data to pass to supplied #ClutterEffectCompleteFunc
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* or NULL
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*
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* Simple effect for scaling a single #ClutterActor.
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*
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* Return value: a #ClutterTimeline for the effect. Will be unreferenced by
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* the effect when completed.
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*
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* Since: 0.4
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*/
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ClutterTimeline *
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clutter_effect_scale (ClutterEffectTemplate *template_,
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ClutterActor *actor,
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gdouble scale_begin,
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gdouble scale_end,
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ClutterGravity gravity,
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ClutterEffectCompleteFunc completed_func,
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gpointer completed_data)
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{
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ClutterEffectClosure *c;
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c = clutter_effect_closure_new (template_,
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actor,
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G_CALLBACK (on_effect_complete));
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c->completed_func = completed_func;
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c->completed_data = completed_data;
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clutter_actor_set_scale_with_gravity (actor,
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scale_begin, scale_begin, gravity);
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c->behave = clutter_behaviour_scale_new (c->alpha,
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scale_begin,
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scale_end,
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gravity);
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|
|
clutter_behaviour_apply (c->behave, actor);
|
|
clutter_timeline_start (c->timeline);
|
|
|
|
return c->timeline;
|
|
}
|
|
|
|
/**
|
|
* clutter_effect_rotate_x:
|
|
* @template_: A #ClutterEffectTemplate
|
|
* @actor: A #ClutterActor to apply the effect to.
|
|
* @angle_begin: Initial angle to apply to actor
|
|
* @angle_end: Final angle to apply to actor
|
|
* @center_y: Position on Y axis to rotate about.
|
|
* @center_z: Position on Z axis to rotate about.
|
|
* @direction: A #ClutterRotateDirection for the rotation.
|
|
* @completed_func: A #ClutterEffectCompleteFunc to call on effect
|
|
* completion or NULL
|
|
* @completed_data: Data to pass to supplied #ClutterEffectCompleteFunc
|
|
* or NULL
|
|
*
|
|
* Simple effect for rotating a single #ClutterActor about y axis.
|
|
*
|
|
* Return value: a #ClutterTimeline for the effect. Will be unreferenced by
|
|
* the effect when completed.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
ClutterTimeline *
|
|
clutter_effect_rotate_x (ClutterEffectTemplate *template_,
|
|
ClutterActor *actor,
|
|
gdouble angle_begin,
|
|
gdouble angle_end,
|
|
gint center_y,
|
|
gint center_z,
|
|
ClutterRotateDirection direction,
|
|
ClutterEffectCompleteFunc completed_func,
|
|
gpointer completed_data)
|
|
{
|
|
ClutterEffectClosure *c;
|
|
|
|
c = clutter_effect_closure_new (template_,
|
|
actor,
|
|
G_CALLBACK (on_effect_complete));
|
|
|
|
c->completed_func = completed_func;
|
|
c->completed_data = completed_data;
|
|
|
|
|
|
clutter_actor_rotate_x (actor, angle_begin, center_y, center_y);
|
|
|
|
c->behave = clutter_behaviour_rotate_new (c->alpha,
|
|
CLUTTER_X_AXIS,
|
|
direction,
|
|
angle_begin,
|
|
angle_end);
|
|
g_object_set (c->behave,
|
|
"center-y", center_y,
|
|
"center-z", center_z,
|
|
NULL);
|
|
|
|
clutter_behaviour_apply (c->behave, actor);
|
|
clutter_timeline_start (c->timeline);
|
|
|
|
return c->timeline;
|
|
}
|
|
|
|
/**
|
|
* clutter_effect_rotate_y:
|
|
* @template_: A #ClutterEffectTemplate
|
|
* @actor: A #ClutterActor to apply the effect to.
|
|
* @angle_begin: Initial angle to apply to actor
|
|
* @angle_end: Final angle to apply to actor
|
|
* @center_x: Position on X axis to rotate about.
|
|
* @center_z: Position on Z axis to rotate about.
|
|
* @direction: A #ClutterRotateDirection for the rotation.
|
|
* @completed_func: A #ClutterEffectCompleteFunc to call on effect
|
|
* completion or NULL
|
|
* @completed_data: Data to pass to supplied #ClutterEffectCompleteFunc
|
|
* or NULL
|
|
*
|
|
* Simple effect for rotating a single #ClutterActor about y axis.
|
|
*
|
|
* Return value: a #ClutterTimeline for the effect. Will be unreferenced by
|
|
* the effect when completed.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
ClutterTimeline *
|
|
clutter_effect_rotate_y (ClutterEffectTemplate *template_,
|
|
ClutterActor *actor,
|
|
gdouble angle_begin,
|
|
gdouble angle_end,
|
|
gint center_x,
|
|
gint center_z,
|
|
ClutterRotateDirection direction,
|
|
ClutterEffectCompleteFunc completed_func,
|
|
gpointer completed_data)
|
|
{
|
|
ClutterEffectClosure *c;
|
|
|
|
c = clutter_effect_closure_new (template_,
|
|
actor,
|
|
G_CALLBACK (on_effect_complete));
|
|
|
|
c->completed_func = completed_func;
|
|
c->completed_data = completed_data;
|
|
|
|
|
|
clutter_actor_rotate_y (actor, angle_begin, center_x, center_z);
|
|
|
|
c->behave = clutter_behaviour_rotate_new (c->alpha,
|
|
CLUTTER_Y_AXIS,
|
|
direction,
|
|
angle_begin,
|
|
angle_end);
|
|
g_object_set (c->behave,
|
|
"center-x", center_x,
|
|
"center-z", center_z,
|
|
NULL);
|
|
|
|
clutter_behaviour_apply (c->behave, actor);
|
|
clutter_timeline_start (c->timeline);
|
|
|
|
return c->timeline;
|
|
}
|
|
|
|
/**
|
|
* clutter_effect_rotate_z:
|
|
* @template_: A #ClutterEffectTemplate
|
|
* @actor: A #ClutterActor to apply the effect to.
|
|
* @angle_begin: Initial angle to apply to actor
|
|
* @angle_end: Final angle to apply to actor
|
|
* @center_x: Position on X axis to rotate about.
|
|
* @center_y: Position on Y axis to rotate about.
|
|
* @direction: A #ClutterRotateDirection for the rotation.
|
|
* @completed_func: A #ClutterEffectCompleteFunc to call on effect
|
|
* completion or NULL
|
|
* @completed_data: Data to pass to supplied #ClutterEffectCompleteFunc
|
|
* or NULL
|
|
*
|
|
* Simple effect for rotating a single #ClutterActor about z axis.
|
|
*
|
|
* Return value: a #ClutterTimeline for the effect. Will be unreferenced by
|
|
* the effect when completed.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
ClutterTimeline *
|
|
clutter_effect_rotate_z (ClutterEffectTemplate *template_,
|
|
ClutterActor *actor,
|
|
gdouble angle_begin,
|
|
gdouble angle_end,
|
|
gint center_x,
|
|
gint center_y,
|
|
ClutterRotateDirection direction,
|
|
ClutterEffectCompleteFunc completed_func,
|
|
gpointer completed_data)
|
|
{
|
|
ClutterEffectClosure *c;
|
|
|
|
c = clutter_effect_closure_new (template_,
|
|
actor,
|
|
G_CALLBACK (on_effect_complete));
|
|
|
|
c->completed_func = completed_func;
|
|
c->completed_data = completed_data;
|
|
|
|
|
|
clutter_actor_rotate_z (actor, angle_begin, center_x, center_y);
|
|
|
|
c->behave = clutter_behaviour_rotate_new (c->alpha,
|
|
CLUTTER_Z_AXIS,
|
|
direction,
|
|
angle_begin,
|
|
angle_end);
|
|
g_object_set (c->behave,
|
|
"center-x", center_x,
|
|
"center-y", center_y,
|
|
NULL);
|
|
|
|
clutter_behaviour_apply (c->behave, actor);
|
|
clutter_timeline_start (c->timeline);
|
|
|
|
return c->timeline;
|
|
}
|