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.
287 lines
9.9 KiB
C
287 lines
9.9 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) 2009 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-animatable
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* @short_description: Interface for animatable classes
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*
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* #ClutterAnimatable is an interface that allows a #GObject class
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* to control how a #ClutterAnimation will animate a property.
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*
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* Each #ClutterAnimatable should implement the
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* #ClutterAnimatableIface.interpolate_property() virtual function of the
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* interface to compute the animation state between two values of an interval
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* depending on a progress factor, expressed as a floating point value.
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*
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* If a #ClutterAnimatable is animated by a #ClutterAnimation
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* instance, the #ClutterAnimation will call
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* clutter_animatable_interpolate_property() passing the name of the
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* currently animated property; the values interval; and the progress factor.
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* The #ClutterAnimatable implementation should return the computed value for
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* the animated
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* property.
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*
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* #ClutterAnimatable is available since Clutter 1.0
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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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#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
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#include "clutter-animatable.h"
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#include "clutter-interval.h"
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#include "clutter-debug.h"
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#include "clutter-private.h"
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#include "deprecated/clutter-animatable.h"
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#include "deprecated/clutter-animation.h"
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typedef ClutterAnimatableIface ClutterAnimatableInterface;
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G_DEFINE_INTERFACE (ClutterAnimatable, clutter_animatable, G_TYPE_OBJECT);
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static void
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clutter_animatable_default_init (ClutterAnimatableInterface *iface)
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{
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}
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/**
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* clutter_animatable_animate_property:
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* @animatable: a #ClutterAnimatable
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* @animation: a #ClutterAnimation
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* @property_name: the name of the animated property
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* @initial_value: the initial value of the animation interval
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* @final_value: the final value of the animation interval
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* @progress: the progress factor
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* @value: return location for the animation value
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*
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* Calls the animate_property() virtual function for @animatable.
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*
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* The @initial_value and @final_value #GValue<!-- -->s must contain
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* the same type; @value must have been initialized to the same
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* type of @initial_value and @final_value.
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*
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* All implementation of the #ClutterAnimatable interface must
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* implement this function.
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*
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* Return value: %TRUE if the value has been validated and can
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* be applied to the #ClutterAnimatable, and %FALSE otherwise
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*
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* Since: 1.0
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*
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* Deprecated: 1.8: Use clutter_animatable_interpolate_value()
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* instead
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*/
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gboolean
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clutter_animatable_animate_property (ClutterAnimatable *animatable,
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ClutterAnimation *animation,
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const gchar *property_name,
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const GValue *initial_value,
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const GValue *final_value,
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gdouble progress,
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GValue *value)
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{
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ClutterAnimatableIface *iface;
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gboolean res;
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g_return_val_if_fail (CLUTTER_IS_ANIMATABLE (animatable), FALSE);
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g_return_val_if_fail (CLUTTER_IS_ANIMATION (animation), FALSE);
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g_return_val_if_fail (property_name != NULL, FALSE);
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g_return_val_if_fail (initial_value != NULL && final_value != NULL, FALSE);
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g_return_val_if_fail (G_VALUE_TYPE (initial_value) != G_TYPE_INVALID, FALSE);
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g_return_val_if_fail (G_VALUE_TYPE (final_value) != G_TYPE_INVALID, FALSE);
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g_return_val_if_fail (value != NULL, FALSE);
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g_return_val_if_fail (G_VALUE_TYPE (value) == G_VALUE_TYPE (initial_value) &&
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G_VALUE_TYPE (value) == G_VALUE_TYPE (final_value),
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FALSE);
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iface = CLUTTER_ANIMATABLE_GET_IFACE (animatable);
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if (iface->animate_property == NULL)
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{
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ClutterInterval *interval;
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interval = clutter_animation_get_interval (animation, property_name);
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if (interval == NULL)
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return FALSE;
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res = clutter_animatable_interpolate_value (animatable, property_name,
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interval,
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progress,
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value);
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}
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else
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res = iface->animate_property (animatable, animation,
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property_name,
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initial_value, final_value,
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progress,
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value);
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return res;
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}
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/**
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* clutter_animatable_find_property:
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* @animatable: a #ClutterAnimatable
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* @property_name: the name of the animatable property to find
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*
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* Finds the #GParamSpec for @property_name
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*
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* Return value: (transfer none): The #GParamSpec for the given property
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* or %NULL
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*
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* Since: 1.4
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*/
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GParamSpec *
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clutter_animatable_find_property (ClutterAnimatable *animatable,
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const gchar *property_name)
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{
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ClutterAnimatableIface *iface;
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g_return_val_if_fail (CLUTTER_IS_ANIMATABLE (animatable), NULL);
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g_return_val_if_fail (property_name != NULL, NULL);
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CLUTTER_NOTE (ANIMATION, "Looking for property '%s'", property_name);
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iface = CLUTTER_ANIMATABLE_GET_IFACE (animatable);
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if (iface->find_property != NULL)
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return iface->find_property (animatable, property_name);
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return g_object_class_find_property (G_OBJECT_GET_CLASS (animatable),
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property_name);
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}
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/**
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* clutter_animatable_get_initial_state:
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* @animatable: a #ClutterAnimatable
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* @property_name: the name of the animatable property to retrieve
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* @value: a #GValue initialized to the type of the property to retrieve
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*
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* Retrieves the current state of @property_name and sets @value with it
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*
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* Since: 1.4
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*/
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void
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clutter_animatable_get_initial_state (ClutterAnimatable *animatable,
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const gchar *property_name,
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GValue *value)
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{
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ClutterAnimatableIface *iface;
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g_return_if_fail (CLUTTER_IS_ANIMATABLE (animatable));
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g_return_if_fail (property_name != NULL);
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CLUTTER_NOTE (ANIMATION, "Getting initial state of '%s'", property_name);
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iface = CLUTTER_ANIMATABLE_GET_IFACE (animatable);
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if (iface->get_initial_state != NULL)
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iface->get_initial_state (animatable, property_name, value);
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else
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g_object_get_property (G_OBJECT (animatable), property_name, value);
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}
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/**
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* clutter_animatable_set_final_state:
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* @animatable: a #ClutterAnimatable
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* @property_name: the name of the animatable property to set
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* @value: the value of the animatable property to set
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*
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* Sets the current state of @property_name to @value
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*
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* Since: 1.4
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*/
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void
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clutter_animatable_set_final_state (ClutterAnimatable *animatable,
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const gchar *property_name,
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const GValue *value)
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{
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ClutterAnimatableIface *iface;
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g_return_if_fail (CLUTTER_IS_ANIMATABLE (animatable));
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g_return_if_fail (property_name != NULL);
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CLUTTER_NOTE (ANIMATION, "Setting state of property '%s'", property_name);
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iface = CLUTTER_ANIMATABLE_GET_IFACE (animatable);
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if (iface->set_final_state != NULL)
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iface->set_final_state (animatable, property_name, value);
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else
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g_object_set_property (G_OBJECT (animatable), property_name, value);
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}
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/**
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* clutter_animatable_interpolate_value:
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* @animatable: a #ClutterAnimatable
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* @property_name: the name of the property to interpolate
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* @interval: a #ClutterInterval with the animation range
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* @progress: the progress to use to interpolate between the
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* initial and final values of the @interval
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* @value: (out): return location for an initialized #GValue
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* using the same type of the @interval
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*
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* Asks a #ClutterAnimatable implementation to interpolate a
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* a named property between the initial and final values of
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* a #ClutterInterval, using @progress as the interpolation
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* value, and store the result inside @value.
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*
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* This function should be used for every property animation
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* involving #ClutterAnimatable<!-- -->s.
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*
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* This function replaces clutter_animatable_animate_property().
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*
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* Return value: %TRUE if the interpolation was successful,
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* and %FALSE otherwise
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*
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* Since: 1.8
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*/
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gboolean
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clutter_animatable_interpolate_value (ClutterAnimatable *animatable,
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const gchar *property_name,
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ClutterInterval *interval,
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gdouble progress,
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GValue *value)
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{
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ClutterAnimatableIface *iface;
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g_return_val_if_fail (CLUTTER_IS_ANIMATABLE (animatable), FALSE);
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g_return_val_if_fail (property_name != NULL, FALSE);
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g_return_val_if_fail (CLUTTER_IS_INTERVAL (interval), FALSE);
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g_return_val_if_fail (value != NULL, FALSE);
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CLUTTER_NOTE (ANIMATION, "Interpolating '%s' (progress: %.3f)",
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property_name,
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progress);
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iface = CLUTTER_ANIMATABLE_GET_IFACE (animatable);
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if (iface->interpolate_value != NULL)
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{
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return iface->interpolate_value (animatable, property_name,
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interval,
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progress,
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value);
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}
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else
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return clutter_interval_compute_value (interval, progress, value);
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}
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