mirror of
https://github.com/brl/mutter.git
synced 2024-12-23 11:32:04 +00:00
25b0e6df23
* clutter/clutter-behaviour-scale.c: (clutter_behaviour_scale_set_property), (clutter_behaviour_scale_class_init): Fix stupid typo in the y-scale-end property declaration. (#720)
581 lines
18 KiB
C
581 lines
18 KiB
C
/*
|
|
* Clutter.
|
|
*
|
|
* An OpenGL based 'interactive canvas' library.
|
|
*
|
|
* Authored By Matthew Allum <mallum@openedhand.com>
|
|
*
|
|
* Copyright (C) 2006 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-scale
|
|
* @short_description: A behaviour controlling scale
|
|
*
|
|
* A #ClutterBehaviourScale interpolates actors size between two values.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "clutter-actor.h"
|
|
#include "clutter-behaviour.h"
|
|
#include "clutter-enum-types.h"
|
|
#include "clutter-main.h"
|
|
#include "clutter-fixed.h"
|
|
#include "clutter-behaviour-scale.h"
|
|
#include "clutter-private.h"
|
|
#include "clutter-debug.h"
|
|
|
|
#include <math.h>
|
|
|
|
G_DEFINE_TYPE (ClutterBehaviourScale,
|
|
clutter_behaviour_scale,
|
|
CLUTTER_TYPE_BEHAVIOUR);
|
|
|
|
struct _ClutterBehaviourScalePrivate
|
|
{
|
|
ClutterFixed x_scale_start;
|
|
ClutterFixed y_scale_start;
|
|
ClutterFixed x_scale_end;
|
|
ClutterFixed y_scale_end;
|
|
|
|
ClutterGravity gravity;
|
|
};
|
|
|
|
#define CLUTTER_BEHAVIOUR_SCALE_GET_PRIVATE(obj) \
|
|
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
|
|
CLUTTER_TYPE_BEHAVIOUR_SCALE, \
|
|
ClutterBehaviourScalePrivate))
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
|
|
PROP_X_SCALE_START,
|
|
PROP_Y_SCALE_START,
|
|
PROP_X_SCALE_END,
|
|
PROP_Y_SCALE_END,
|
|
PROP_SCALE_GRAVITY
|
|
};
|
|
|
|
typedef struct {
|
|
ClutterFixed scale_x;
|
|
ClutterFixed scale_y;
|
|
} ScaleFrameClosure;
|
|
|
|
static void
|
|
scale_frame_foreach (ClutterBehaviour *behaviour,
|
|
ClutterActor *actor,
|
|
gpointer data)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv =
|
|
CLUTTER_BEHAVIOUR_SCALE (behaviour)->priv;
|
|
ScaleFrameClosure *closure = data;
|
|
ClutterGravity gravity = priv->gravity;
|
|
|
|
/* Don't mess with the actor anchor point of gravity is set to
|
|
* none
|
|
*/
|
|
if (gravity != CLUTTER_GRAVITY_NONE)
|
|
clutter_actor_set_anchor_point_from_gravity (actor, gravity);
|
|
|
|
clutter_actor_set_scalex (actor, closure->scale_x, closure->scale_y);
|
|
}
|
|
|
|
static void
|
|
clutter_behaviour_scale_alpha_notify (ClutterBehaviour *behave,
|
|
guint32 alpha_value)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
ClutterFixed scale_x, scale_y, factor;
|
|
ScaleFrameClosure closure = { 0, };
|
|
|
|
priv = CLUTTER_BEHAVIOUR_SCALE (behave)->priv;
|
|
|
|
factor = CLUTTER_INT_TO_FIXED (alpha_value) / CLUTTER_ALPHA_MAX_ALPHA;
|
|
|
|
scale_x = CLUTTER_FIXED_MUL (factor,
|
|
(priv->x_scale_end - priv->x_scale_start));
|
|
scale_x += priv->x_scale_start;
|
|
|
|
scale_y = CLUTTER_FIXED_MUL (factor,
|
|
(priv->y_scale_end - priv->y_scale_start));
|
|
scale_y += priv->y_scale_start;
|
|
|
|
closure.scale_x = scale_x;
|
|
closure.scale_y = scale_y;
|
|
|
|
clutter_behaviour_actors_foreach (behave,
|
|
scale_frame_foreach,
|
|
&closure);
|
|
}
|
|
|
|
static void
|
|
clutter_behaviour_scale_set_property (GObject *gobject,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
|
|
priv = CLUTTER_BEHAVIOUR_SCALE (gobject)->priv;
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_X_SCALE_START:
|
|
priv->x_scale_start = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
|
|
break;
|
|
case PROP_X_SCALE_END:
|
|
priv->x_scale_end = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
|
|
break;
|
|
case PROP_Y_SCALE_START:
|
|
priv->y_scale_start = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
|
|
break;
|
|
case PROP_Y_SCALE_END:
|
|
priv->y_scale_end = CLUTTER_FLOAT_TO_FIXED (g_value_get_double (value));
|
|
break;
|
|
case PROP_SCALE_GRAVITY:
|
|
priv->gravity = g_value_get_enum (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_behaviour_scale_get_property (GObject *gobject,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
|
|
priv = CLUTTER_BEHAVIOUR_SCALE (gobject)->priv;
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_X_SCALE_START:
|
|
g_value_set_double (value, CLUTTER_FIXED_TO_FLOAT (priv->x_scale_start));
|
|
break;
|
|
case PROP_X_SCALE_END:
|
|
g_value_set_double (value, CLUTTER_FIXED_TO_FLOAT (priv->x_scale_end));
|
|
break;
|
|
case PROP_Y_SCALE_START:
|
|
g_value_set_double (value, CLUTTER_FIXED_TO_FLOAT (priv->y_scale_start));
|
|
break;
|
|
case PROP_Y_SCALE_END:
|
|
g_value_set_double (value, CLUTTER_FIXED_TO_FLOAT (priv->y_scale_end));
|
|
break;
|
|
case PROP_SCALE_GRAVITY:
|
|
g_value_set_enum (value, priv->gravity);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_behaviour_scale_class_init (ClutterBehaviourScaleClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
ClutterBehaviourClass *behave_class = CLUTTER_BEHAVIOUR_CLASS (klass);
|
|
|
|
gobject_class->set_property = clutter_behaviour_scale_set_property;
|
|
gobject_class->get_property = clutter_behaviour_scale_get_property;
|
|
|
|
/**
|
|
* ClutterBehaviourScale:x-scale-start:
|
|
*
|
|
* The initial scaling factor on the X axis for the actors.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_X_SCALE_START,
|
|
g_param_spec_double ("x-scale-start",
|
|
"X Start Scale",
|
|
"Initial scale on the X axis",
|
|
0.0, G_MAXDOUBLE,
|
|
1.0,
|
|
CLUTTER_PARAM_READWRITE));
|
|
/**
|
|
* ClutterBehaviourScale:x-scale-end:
|
|
*
|
|
* The final scaling factor on the X axis for the actors.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_X_SCALE_END,
|
|
g_param_spec_double ("x-scale-end",
|
|
"X End Scale",
|
|
"Final scale on the X axis",
|
|
0.0, G_MAXDOUBLE,
|
|
1.0,
|
|
CLUTTER_PARAM_READWRITE));
|
|
/**
|
|
* ClutterBehaviourScale:y-scale-start:
|
|
*
|
|
* The initial scaling factor on the Y axis for the actors.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_Y_SCALE_START,
|
|
g_param_spec_double ("y-scale-start",
|
|
"Y Start Scale",
|
|
"Initial scale on the Y axis",
|
|
0.0, G_MAXDOUBLE,
|
|
1.0,
|
|
CLUTTER_PARAM_READWRITE));
|
|
/**
|
|
* ClutterBehaviourScale:y-scale-end:
|
|
*
|
|
* The final scaling factor on the Y axis for the actors.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_Y_SCALE_END,
|
|
g_param_spec_double ("y-scale-end",
|
|
"Y End Scale",
|
|
"Final scale on the Y axis",
|
|
0.0, G_MAXDOUBLE,
|
|
1.0,
|
|
CLUTTER_PARAM_READWRITE));
|
|
/**
|
|
* ClutterBehaviourScale:gravity:
|
|
*
|
|
* The gravity of the scaling.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_SCALE_GRAVITY,
|
|
g_param_spec_enum ("scale-gravity",
|
|
"Scale Gravity",
|
|
"The gravity of the scaling",
|
|
CLUTTER_TYPE_GRAVITY,
|
|
CLUTTER_GRAVITY_CENTER,
|
|
CLUTTER_PARAM_READWRITE));
|
|
|
|
|
|
behave_class->alpha_notify = clutter_behaviour_scale_alpha_notify;
|
|
|
|
g_type_class_add_private (klass, sizeof (ClutterBehaviourScalePrivate));
|
|
}
|
|
|
|
static void
|
|
clutter_behaviour_scale_init (ClutterBehaviourScale *self)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
|
|
self->priv = priv = CLUTTER_BEHAVIOUR_SCALE_GET_PRIVATE (self);
|
|
|
|
priv->x_scale_start = priv->x_scale_end = CFX_ONE;
|
|
priv->y_scale_start = priv->y_scale_end = CFX_ONE;
|
|
priv->gravity = CLUTTER_GRAVITY_CENTER;
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_new:
|
|
* @alpha: a #ClutterAlpha
|
|
* @x_scale_start: initial scale factor on the X axis
|
|
* @y_scale_start: initial scale factor on the Y axis
|
|
* @x_scale_end: final scale factor on the X axis
|
|
* @y_scale_end: final scale factor on the Y axis
|
|
* @gravity: a #ClutterGravity for the scale.
|
|
*
|
|
* Creates a new #ClutterBehaviourScale instance.
|
|
*
|
|
* Return value: the newly created #ClutterBehaviourScale
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
ClutterBehaviour *
|
|
clutter_behaviour_scale_new (ClutterAlpha *alpha,
|
|
gdouble x_scale_start,
|
|
gdouble y_scale_start,
|
|
gdouble x_scale_end,
|
|
gdouble y_scale_end,
|
|
ClutterGravity gravity)
|
|
{
|
|
g_return_val_if_fail (alpha == NULL || CLUTTER_IS_ALPHA (alpha), NULL);
|
|
|
|
return clutter_behaviour_scale_newx (alpha,
|
|
CLUTTER_FLOAT_TO_FIXED (x_scale_start),
|
|
CLUTTER_FLOAT_TO_FIXED (y_scale_start),
|
|
CLUTTER_FLOAT_TO_FIXED (x_scale_end),
|
|
CLUTTER_FLOAT_TO_FIXED (y_scale_end),
|
|
gravity);
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_newx:
|
|
* @alpha: a #ClutterAlpha
|
|
* @x_scale_start: initial scale factor on the X axis
|
|
* @y_scale_start: initial scale factor on the Y axis
|
|
* @x_scale_end: final scale factor on the X axis
|
|
* @y_scale_end: final scale factor on the Y axis
|
|
* @gravity: a #ClutterGravity for the scale.
|
|
*
|
|
* A fixed point implementation of clutter_behaviour_scale_new()
|
|
*
|
|
* Return value: the newly created #ClutterBehaviourScale
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
ClutterBehaviour *
|
|
clutter_behaviour_scale_newx (ClutterAlpha *alpha,
|
|
ClutterFixed x_scale_start,
|
|
ClutterFixed y_scale_start,
|
|
ClutterFixed x_scale_end,
|
|
ClutterFixed y_scale_end,
|
|
ClutterGravity gravity)
|
|
{
|
|
ClutterBehaviourScale *behave;
|
|
|
|
g_return_val_if_fail (alpha == NULL || CLUTTER_IS_ALPHA (alpha), NULL);
|
|
|
|
behave = g_object_new (CLUTTER_TYPE_BEHAVIOUR_SCALE, "alpha", alpha, NULL);
|
|
|
|
behave->priv->x_scale_start = x_scale_start;
|
|
behave->priv->y_scale_start = y_scale_start;
|
|
behave->priv->x_scale_end = x_scale_end;
|
|
behave->priv->y_scale_end = y_scale_end;
|
|
|
|
behave->priv->gravity = gravity;
|
|
|
|
return CLUTTER_BEHAVIOUR (behave);
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_set_bounds:
|
|
* @scale: a #ClutterBehaviourScale
|
|
* @x_scale_start: initial scale factor on the X axis
|
|
* @y_scale_start: initial scale factor on the Y axis
|
|
* @x_scale_end: final scale factor on the X axis
|
|
* @y_scale_end: final scale factor on the Y axis
|
|
*
|
|
* Sets the bounds used by scale behaviour.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_behaviour_scale_set_bounds (ClutterBehaviourScale *scale,
|
|
gdouble x_scale_start,
|
|
gdouble y_scale_start,
|
|
gdouble x_scale_end,
|
|
gdouble y_scale_end)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
|
|
|
|
clutter_behaviour_scale_set_boundsx (scale,
|
|
CLUTTER_FLOAT_TO_FIXED (x_scale_start),
|
|
CLUTTER_FLOAT_TO_FIXED (y_scale_start),
|
|
CLUTTER_FLOAT_TO_FIXED (x_scale_end),
|
|
CLUTTER_FLOAT_TO_FIXED (y_scale_end));
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_get_bounds:
|
|
* @scale: a #ClutterBehaviourScale
|
|
* @x_scale_start: return location for the initial scale factor on the X
|
|
* axis, or %NULL
|
|
* @y_scale_start: return location for the initial scale factor on the Y
|
|
* axis, or %NULL
|
|
* @x_scale_end: return location for the final scale factor on the X axis,
|
|
* or %NULL
|
|
* @y_scale_end: return location for the final scale factor on the Y axis,
|
|
* or %NULL
|
|
*
|
|
* Retrieves the bounds used by scale behaviour.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
void
|
|
clutter_behaviour_scale_get_bounds (ClutterBehaviourScale *scale,
|
|
gdouble *x_scale_start,
|
|
gdouble *y_scale_start,
|
|
gdouble *x_scale_end,
|
|
gdouble *y_scale_end)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
|
|
|
|
priv = scale->priv;
|
|
|
|
if (x_scale_start)
|
|
*x_scale_start = CLUTTER_FIXED_TO_DOUBLE (priv->x_scale_start);
|
|
|
|
if (x_scale_end)
|
|
*x_scale_end = CLUTTER_FIXED_TO_DOUBLE (priv->x_scale_end);
|
|
|
|
if (y_scale_start)
|
|
*y_scale_start = CLUTTER_FIXED_TO_DOUBLE (priv->y_scale_start);
|
|
|
|
if (y_scale_end)
|
|
*y_scale_end = CLUTTER_FIXED_TO_DOUBLE (priv->y_scale_end);
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_set_boundsx:
|
|
* @scale: a #ClutterBehaviourScale
|
|
* @x_scale_start: initial scale factor on the X axis
|
|
* @y_scale_start: initial scale factor on the Y axis
|
|
* @x_scale_end: final scale factor on the X axis
|
|
* @y_scale_end: final scale factor on the Y axis
|
|
*
|
|
* Fixed point version of clutter_behaviour_scale_set_bounds().
|
|
*
|
|
* Sets the bounds used by scale behaviour.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_behaviour_scale_set_boundsx (ClutterBehaviourScale *scale,
|
|
ClutterFixed x_scale_start,
|
|
ClutterFixed y_scale_start,
|
|
ClutterFixed x_scale_end,
|
|
ClutterFixed y_scale_end)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
|
|
|
|
priv = scale->priv;
|
|
|
|
g_object_freeze_notify (G_OBJECT (scale));
|
|
|
|
if (priv->x_scale_start != x_scale_start)
|
|
{
|
|
priv->x_scale_start = x_scale_start;
|
|
g_object_notify (G_OBJECT (scale), "x-scale-start");
|
|
}
|
|
|
|
if (priv->y_scale_start != y_scale_start)
|
|
{
|
|
priv->y_scale_start = y_scale_start;
|
|
g_object_notify (G_OBJECT (scale), "y-scale-start");
|
|
}
|
|
|
|
if (priv->x_scale_end != x_scale_end)
|
|
{
|
|
priv->x_scale_end = x_scale_end;
|
|
g_object_notify (G_OBJECT (scale), "x-scale-end");
|
|
}
|
|
|
|
if (priv->y_scale_end != y_scale_end)
|
|
{
|
|
priv->y_scale_end = y_scale_end;
|
|
g_object_notify (G_OBJECT (scale), "y-scale-end");
|
|
}
|
|
|
|
g_object_thaw_notify (G_OBJECT (scale));
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_get_boundsx:
|
|
* @scale: a #ClutterBehaviourScale
|
|
* @x_scale_start: return location for the initial scale factor on the X
|
|
* axis, or %NULL
|
|
* @y_scale_start: return location for the initial scale factor on the Y
|
|
* axis, or %NULL
|
|
* @x_scale_end: return location for the final scale factor on the X axis,
|
|
* or %NULL
|
|
* @y_scale_end: return location for the final scale factor on the Y axis,
|
|
* or %NULL
|
|
*
|
|
* Fixed point version of clutter_behaviour_scale_get_bounds().
|
|
*
|
|
* Retrieves the bounds used by scale behaviour.
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
void
|
|
clutter_behaviour_scale_get_boundsx (ClutterBehaviourScale *scale,
|
|
ClutterFixed *x_scale_start,
|
|
ClutterFixed *y_scale_start,
|
|
ClutterFixed *x_scale_end,
|
|
ClutterFixed *y_scale_end)
|
|
{
|
|
ClutterBehaviourScalePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
|
|
|
|
priv = scale->priv;
|
|
|
|
if (x_scale_start)
|
|
*x_scale_start = priv->x_scale_start;
|
|
|
|
if (x_scale_end)
|
|
*x_scale_end = priv->x_scale_end;
|
|
|
|
if (y_scale_start)
|
|
*y_scale_start = priv->y_scale_start;
|
|
|
|
if (y_scale_end)
|
|
*y_scale_end = priv->y_scale_end;
|
|
}
|
|
|
|
/**
|
|
* clutter_behaviour_scale_set_gravity:
|
|
* @scale: a #ClutterBehaviourScale
|
|
* @gravity: the gravity of the scaling
|
|
*
|
|
* Sets the #ClutterGravity applied by the scale behaviour.
|
|
*
|
|
* Since: 0.6
|
|
*/
|
|
void
|
|
clutter_behaviour_scale_set_gravity (ClutterBehaviourScale *scale,
|
|
ClutterGravity gravity)
|
|
{
|
|
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
|
|
|
|
if (scale->priv->gravity != gravity)
|
|
{
|
|
scale->priv->gravity = gravity;
|
|
|
|
g_object_notify (G_OBJECT (scale), "scale-gravity");
|
|
}
|
|
}
|
|
/**
|
|
* clutter_behaviour_scale_get_gravity:
|
|
* @scale: a #ClutterBehaviourScale
|
|
*
|
|
* Retrieves the #ClutterGravity applied by the scale behaviour.
|
|
*
|
|
* Return value: the gravity used by the behaviour
|
|
*
|
|
* Since: 0.4
|
|
*/
|
|
ClutterGravity
|
|
clutter_behaviour_scale_get_gravity (ClutterBehaviourScale *scale)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale), CLUTTER_GRAVITY_NONE);
|
|
|
|
return scale->priv->gravity;
|
|
}
|