mutter/clutter/clutter-behaviour-rotate.c
Matthew Allum c2236bb72a 2007-06-12 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-alpha.c:
        Remove stray g_debug.

        * clutter/clutter-behaviour-rotate.c:
        Register private class member.

        * clutter/clutter-behaviour.c:
        * clutter/clutter-behaviour.h:
        Add applied and removed signals.

        * Makefile.am:
        * configure.ac:
        * examples/Makefile.am:
        * examples/README:
        * examples/behave.c:
        * examples/slider.c:
        * examples/super-oh.c:
        * examples/test-entry.c:
        * examples/test-text.c:
        * examples/test.c:
        * tests/Makefile.am:
        Remove examples, moving applicable code into tests.
2007-06-12 10:36:28 +00:00

538 lines
16 KiB
C

/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
*
* Copyright (C) 2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:clutter-behaviour-rotate
* @short_description: A behaviour class to rotate actors
*
* A #ClutterBehaviourRotate rotate actors between a starting and ending
* angle on a given axis.
*
* The #ClutterBehaviourRotate is available since version 0.4.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "clutter-actor.h"
#include "clutter-behaviour.h"
#include "clutter-main.h"
#include "clutter-fixed.h"
#include "clutter-behaviour-rotate.h"
#include "clutter-enum-types.h"
#include "clutter-private.h"
#include "clutter-debug.h"
#include <math.h>
G_DEFINE_TYPE (ClutterBehaviourRotate,
clutter_behaviour_rotate,
CLUTTER_TYPE_BEHAVIOUR);
struct _ClutterBehaviourRotatePrivate
{
ClutterFixed angle_begin;
ClutterFixed angle_end;
ClutterRotateAxis axis;
ClutterRotateDirection direction;
};
#define CLUTTER_BEHAVIOUR_ROTATE_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
CLUTTER_TYPE_BEHAVIOUR_ROTATE, \
ClutterBehaviourRotatePrivate))
enum
{
PROP_0,
PROP_ANGLE_BEGIN,
PROP_ANGLE_END,
PROP_AXIS,
PROP_DIRECTION
};
static void
clutter_behaviour_rotate_alpha_notify (ClutterBehaviour *behaviour,
guint32 alpha_value)
{
ClutterFixed factor, angle;
ClutterBehaviourRotate *rotate_behaviour;
ClutterBehaviourRotatePrivate *priv;
GSList *actors, *l;
rotate_behaviour = CLUTTER_BEHAVIOUR_ROTATE (behaviour);
priv = rotate_behaviour->priv;
factor = CLUTTER_INT_TO_FIXED (alpha_value) / CLUTTER_ALPHA_MAX_ALPHA;
angle = 0;
switch (priv->direction)
{
case CLUTTER_ROTATE_CW:
angle = CLUTTER_FIXED_MUL (factor, (priv->angle_end - priv->angle_begin));
angle += priv->angle_begin;
break;
case CLUTTER_ROTATE_CCW:
angle = CLUTTER_FIXED_MUL (factor, (priv->angle_begin - priv->angle_end));
angle += priv->angle_end;
break;
}
actors = clutter_behaviour_get_actors (behaviour);
for (l = actors; l; l = l->next)
{
ClutterActor *actor = l->data;
switch (priv->axis)
{
case CLUTTER_X_AXIS:
clutter_actor_rotate_x (actor,
CLUTTER_FIXED_TO_FLOAT (angle),
0, 0);
break;
case CLUTTER_Y_AXIS:
clutter_actor_rotate_y (actor,
CLUTTER_FIXED_TO_FLOAT (angle),
0, 0);
break;
case CLUTTER_Z_AXIS:
clutter_actor_rotate_z (actor,
CLUTTER_FIXED_TO_FLOAT (angle),
0, 0);
break;
}
}
g_slist_free (actors);
}
static void
clutter_behaviour_rotate_set_property (GObject *gobject,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterBehaviourRotatePrivate *priv;
priv = CLUTTER_BEHAVIOUR_ROTATE (gobject)->priv;
switch (prop_id)
{
case PROP_ANGLE_BEGIN:
priv->angle_begin = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
break;
case PROP_ANGLE_END:
priv->angle_end = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
break;
case PROP_AXIS:
priv->axis = g_value_get_enum (value);
break;
case PROP_DIRECTION:
priv->direction = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_behaviour_rotate_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterBehaviourRotatePrivate *priv;
priv = CLUTTER_BEHAVIOUR_ROTATE (gobject)->priv;
switch (prop_id)
{
case PROP_ANGLE_BEGIN:
g_value_set_double (value, CLUTTER_FIXED_TO_DOUBLE (priv->angle_begin));
break;
case PROP_ANGLE_END:
g_value_set_double (value, CLUTTER_FIXED_TO_DOUBLE (priv->angle_end));
break;
case PROP_AXIS:
g_value_set_enum (value, priv->axis);
break;
case PROP_DIRECTION:
g_value_set_enum (value, priv->direction);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_behaviour_rotate_class_init (ClutterBehaviourRotateClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterBehaviourClass *behaviour_class = CLUTTER_BEHAVIOUR_CLASS (klass);
gobject_class->set_property = clutter_behaviour_rotate_set_property;
gobject_class->get_property = clutter_behaviour_rotate_get_property;
behaviour_class->alpha_notify = clutter_behaviour_rotate_alpha_notify;
/**
* ClutterBehaviourRotate:angle-begin:
*
* The initial angle from whence the rotation should begin.
*
* Since: 0.4
*/
g_object_class_install_property (gobject_class,
PROP_ANGLE_BEGIN,
g_param_spec_double ("angle-begin",
"Angle Begin",
"Initial angle",
0.0, 359.0, 0.0,
CLUTTER_PARAM_READWRITE));
/**
* ClutterBehaviourRotate:angle-end:
*
* The final angle to where the rotation should end.
*
* Since: 0.4
*/
g_object_class_install_property (gobject_class,
PROP_ANGLE_END,
g_param_spec_double ("angle-end",
"Angle End",
"Final angle",
0.0, 359.0, 359.0,
CLUTTER_PARAM_READWRITE));
/**
* ClutterBehaviourRotate:axis:
*
* The axis of rotation.
*
* Since: 0.4
*/
g_object_class_install_property (gobject_class,
PROP_AXIS,
g_param_spec_enum ("axis",
"Axis",
"Axis of rotation",
CLUTTER_TYPE_ROTATE_AXIS,
CLUTTER_Z_AXIS,
CLUTTER_PARAM_READWRITE));
/**
* ClutterBehaviourRotate:direction:
*
* The direction of the rotation.
*
* Since: 0.4
*/
g_object_class_install_property (gobject_class,
PROP_DIRECTION,
g_param_spec_enum ("direction",
"Direction",
"Direction of rotation",
CLUTTER_TYPE_ROTATE_DIRECTION,
CLUTTER_ROTATE_CW,
CLUTTER_PARAM_READWRITE));
g_type_class_add_private (klass, sizeof (ClutterBehaviourRotatePrivate));
}
static void
clutter_behaviour_rotate_init (ClutterBehaviourRotate *rotate)
{
ClutterBehaviourRotatePrivate *priv;
rotate->priv = priv = CLUTTER_BEHAVIOUR_ROTATE_GET_PRIVATE (rotate);
priv->angle_begin = CLUTTER_FLOAT_TO_FIXED (0.0);
priv->angle_end = CLUTTER_FLOAT_TO_FIXED (359.0);
priv->axis = CLUTTER_Z_AXIS;
priv->direction = CLUTTER_ROTATE_CW;
}
/**
* clutter_behaviour_rotate_new:
* @alpha: a #ClutterAlpha, or %NULL
* @axis: the rotation axis
* @direction: the rotation direction
* @angle_begin: the starting angle
* @angle_end: the final angle
*
* Creates a new #ClutterBehaviourRotate. This behaviour will rotate actors
* bound to it on @axis, following @direction, between @angle_begin and
* @angle_end.
*
* Return value: the newly created #ClutterBehaviourRotate.
*
* Since: 0.4
*/
ClutterBehaviour *
clutter_behaviour_rotate_new (ClutterAlpha *alpha,
ClutterRotateAxis axis,
ClutterRotateDirection direction,
gdouble angle_begin,
gdouble angle_end)
{
return clutter_behaviour_rotate_newx (alpha, axis, direction,
CLUTTER_FLOAT_TO_FIXED (angle_begin),
CLUTTER_FLOAT_TO_FIXED (angle_end));
}
/**
* clutter_behaviour_rotate_newx:
* @alpha: a #ClutterAlpha or %NULL
* @axis: the rotation axis
* @direction: the rotation direction
* @angle_begin: the starting angle, in fixed point notation
* @angle_end: the final angle, in fixed point notation
*
* Creates a new #ClutterBehaviourRotate. This is the fixed point version
* of clutter_behaviour_rotate_new().
*
* Return value: the newly created #ClutterBehaviourRotate.
*
* Since: 0.4
*/
ClutterBehaviour *
clutter_behaviour_rotate_newx (ClutterAlpha *alpha,
ClutterRotateAxis axis,
ClutterRotateDirection direction,
ClutterFixed angle_begin,
ClutterFixed angle_end)
{
ClutterBehaviour *retval;
ClutterBehaviourRotatePrivate *priv;
retval = g_object_new (CLUTTER_TYPE_BEHAVIOUR_ROTATE,
"alpha", alpha,
"axis", axis,
"direction", direction,
NULL);
priv = CLUTTER_BEHAVIOUR_ROTATE_GET_PRIVATE (retval);
priv->angle_begin = angle_begin;
priv->angle_end = angle_end;
return retval;
}
/**
* clutter_behaviour_rotate_get_axis:
* @rotate: a #ClutterBehaviourRotate
*
* Retrieves the #ClutterRotateAxis used by the rotate behaviour.
*
* Return value: the rotation axis
*
* Since: 0.4
*/
ClutterRotateAxis
clutter_behaviour_rotate_get_axis (ClutterBehaviourRotate *rotate)
{
g_return_val_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate), CLUTTER_Z_AXIS);
return rotate->priv->axis;
}
/**
* clutter_behaviour_rotate_set_axis:
* @rotate: a #ClutterBehaviourRotate
* @axis: a #ClutterRotateAxis
*
* Sets the axis used by the rotate behaviour.
*
* Since: 0.4
*/
void
clutter_behaviour_rotate_set_axis (ClutterBehaviourRotate *rotate,
ClutterRotateAxis axis)
{
ClutterBehaviourRotatePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
priv = rotate->priv;
if (priv->axis != axis)
{
g_object_ref (rotate);
priv->axis = axis;
g_object_notify (G_OBJECT (rotate), "axis");
g_object_unref (rotate);
}
}
/**
* clutter_behaviour_rotate_get_direction:
* @rotate: a #ClutterBehaviourRotate
*
* Retrieves the #ClutterRotateDirection used by the rotate behaviour.
*
* Return value: the rotation direction
*
* Since: 0.4
*/
ClutterRotateDirection
clutter_behaviour_rotate_get_direction (ClutterBehaviourRotate *rotate)
{
g_return_val_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate),
CLUTTER_ROTATE_CW);
return rotate->priv->direction;
}
/**
* clutter_behaviour_rotate_set_direction:
* @rotate: a #ClutterBehaviourRotate
* @direction: the rotation direction
*
* Sets the rotation direction used by the rotate behaviour.
*
* Since: 0.4
*/
void
clutter_behaviour_rotate_set_direction (ClutterBehaviourRotate *rotate,
ClutterRotateDirection direction)
{
ClutterBehaviourRotatePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
priv = rotate->priv;
if (priv->direction != direction)
{
g_object_ref (rotate);
priv->direction = direction;
g_object_notify (G_OBJECT (rotate), "direction");
g_object_unref (rotate);
}
}
/**
* clutter_behaviour_rotate_get_bounds:
* @rotate: a #ClutterBehaviourRotate
* @angle_begin: return value for the initial angle
* @angle_end: return value for the final angle
*
* Retrieves the rotation boundaries of the rotate behaviour.
*
* Since: 0.4
*/
void
clutter_behaviour_rotate_get_bounds (ClutterBehaviourRotate *rotate,
gdouble *angle_begin,
gdouble *angle_end)
{
ClutterBehaviourRotatePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
priv = rotate->priv;
if (angle_begin)
*angle_begin = CLUTTER_FIXED_TO_DOUBLE (priv->angle_begin);
if (angle_end)
*angle_end = CLUTTER_FIXED_TO_DOUBLE (priv->angle_end);
}
void
clutter_behaviour_rotate_set_bounds (ClutterBehaviourRotate *rotate,
gdouble angle_begin,
gdouble angle_end)
{
#if 0
ClutterBehaviourRotatePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
priv = rotate->priv;
g_object_ref (rotate);
g_object_freeze_notify (G_OBJECT (rotate));
g_object_thaw_notify (G_OBJECT (rotate));
g_object_unref (rotate);
#endif
}
/**
* clutter_behaviour_rotate_get_bounds:
* @rotate: a #ClutterBehaviourRotate
* @angle_begin: return value for the initial angle
* @angle_end: return value for the final angle
*
* Retrieves the rotation boundaries of the rotate behaviour. This is
* the fixed point notation version of clutter_behaviour_rotate_get_bounds().
*
* Since: 0.4
*/
void
clutter_behaviour_rotate_get_boundsx (ClutterBehaviourRotate *rotate,
ClutterFixed *angle_begin,
ClutterFixed *angle_end)
{
ClutterBehaviourRotatePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
priv = rotate->priv;
if (angle_begin);
*angle_begin = priv->angle_begin;
if (angle_end)
*angle_end = priv->angle_end;
}
void
clutter_behaviour_rotate_set_boundsx (ClutterBehaviourRotate *rotate,
ClutterFixed angle_begin,
ClutterFixed angle_end)
{
#if 0
ClutterBehaviourRotatePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_ROTATE (rotate));
priv = rotate->priv;
g_object_ref (rotate);
g_object_freeze_notify (G_OBJECT (rotate));
g_object_thaw_notify (G_OBJECT (rotate));
g_object_unref (rotate);
#endif
}