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Add API for getting the scale bounds from a scale behaviour instance.

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This commit is contained in:
Emmanuele Bassi 2007-03-25 22:37:28 +00:00
parent f741107fcb
commit f595460932
3 changed files with 122 additions and 38 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2007-03-26 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-behaviour-scale.[ch]: Add API for getting
the scale bounds and the gravity from a scale behaviour instance.
2007-03-26 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-timeline.c: Fix last commit.

89
clutter/clutter-behaviour-scale.c
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@ -28,7 +28,7 @@
* @short_description: A behaviour class interpolating actors size between
* two values.
*
* #ClutterBehaviourPath interpolates actors size between two values.
* A #ClutterBehaviourScale interpolates actors size between two values.
*
*/
@ -47,13 +47,6 @@
#include <math.h>
/**
* SECTION:clutter-behaviour-scale
* @short_description: Behaviour controlling the scale of a set of actors
*
* FIXME
*/
G_DEFINE_TYPE (ClutterBehaviourScale,
clutter_behaviour_scale,
CLUTTER_TYPE_BEHAVIOUR);
@ -121,7 +114,7 @@ scale_frame_foreach (ClutterBehaviour *behaviour,
/*
* FIXME: This is actually broken for anything other than 0,0
*/
clutter_actor_set_position (actor, (w - sw)/2, (h - sh)/2);
clutter_actor_set_position (actor, (w - sw) / 2, (h - sh) / 2);
default:
break;
}
@ -287,6 +280,8 @@ clutter_behaviour_scale_new (ClutterAlpha *alpha,
gdouble 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 (scale_begin),
CLUTTER_FLOAT_TO_FIXED (scale_end),
@ -314,6 +309,8 @@ clutter_behaviour_scale_newx (ClutterAlpha *alpha,
{
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);
@ -324,3 +321,77 @@ clutter_behaviour_scale_newx (ClutterAlpha *alpha,
return CLUTTER_BEHAVIOUR (behave);
}
/**
* clutter_behaviour_scale_get_bounds:
* @scale: a #ClutterBehaviourScale
* @scale_begin: return location for the initial scale factor
* @scale_end: return location for the final scale factor
*
* Retrieves the bounds used by scale behaviour.
*
* Since: 0.4
*/
void
clutter_behaviour_scale_get_bounds (ClutterBehaviourScale *scale,
gdouble *scale_begin,
gdouble *scale_end)
{
ClutterBehaviourScalePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
priv = scale->priv;
if (scale_begin)
*scale_begin = CLUTTER_FIXED_TO_DOUBLE (priv->scale_begin);
if (scale_end)
*scale_end = CLUTTER_FIXED_TO_DOUBLE (priv->scale_end);
}
/**
* clutter_behaviour_scale_get_boundsx:
* @scale: a #ClutterBehaviourScale
* @scale_begin: return location for the initial scale factor
* @scale_end: return location for the final scale factor
*
* Retrieves the bounds used by scale behaviour.
*
* Since: 0.4
*/
void
clutter_behaviour_scale_get_boundsx (ClutterBehaviourScale *scale,
ClutterFixed *scale_begin,
ClutterFixed *scale_end)
{
ClutterBehaviourScalePrivate *priv;
g_return_if_fail (CLUTTER_IS_BEHAVIOUR_SCALE (scale));
priv = scale->priv;
if (scale_begin)
*scale_begin = priv->scale_begin;
if (scale_end)
*scale_end = priv->scale_end;
}
/**
* 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;
}

52
clutter/clutter-behaviour-scale.h
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@ -55,22 +55,7 @@ G_BEGIN_DECLS
(G_TYPE_INSTANCE_GET_CLASS ((obj), \
CLUTTER_TYPE_BEHAVIOUR_SCALE, ClutterBehaviourScaleClass))
typedef struct _ClutterBehaviourScale ClutterBehaviourScale;
typedef struct _ClutterBehaviourScalePrivate ClutterBehaviourScalePrivate;
typedef struct _ClutterBehaviourScaleClass ClutterBehaviourScaleClass;
struct _ClutterBehaviourScale
{
ClutterBehaviour parent;
ClutterBehaviourScalePrivate *priv;
};
struct _ClutterBehaviourScaleClass
{
ClutterBehaviourClass parent_class;
};
typedef enum {
typedef enum { /*< prefix=CLUTTER_GRAVITY >*/
CLUTTER_GRAVITY_NONE = 0,
CLUTTER_GRAVITY_NORTH,
CLUTTER_GRAVITY_NORTH_EAST,
@ -83,20 +68,43 @@ typedef enum {
CLUTTER_GRAVITY_CENTER
} ClutterGravity;
typedef struct _ClutterBehaviourScale ClutterBehaviourScale;
typedef struct _ClutterBehaviourScalePrivate ClutterBehaviourScalePrivate;
typedef struct _ClutterBehaviourScaleClass ClutterBehaviourScaleClass;
struct _ClutterBehaviourScale
{
ClutterBehaviour parent_instance;
/*< private >*/
ClutterBehaviourScalePrivate *priv;
};
struct _ClutterBehaviourScaleClass
{
ClutterBehaviourClass parent_class;
};
GType clutter_behaviour_scale_get_type (void) G_GNUC_CONST;
ClutterBehaviour*
clutter_behaviour_scale_new (ClutterAlpha *alpha,
ClutterBehaviour *clutter_behaviour_scale_new (ClutterAlpha *alpha,
gdouble scale_begin,
gdouble scale_end,
ClutterGravity gravity);
ClutterBehaviour*
clutter_behaviour_scale_newx (ClutterAlpha *alpha,
ClutterBehaviour *clutter_behaviour_scale_newx (ClutterAlpha *alpha,
ClutterFixed scale_begin,
ClutterFixed scale_end,
ClutterGravity gravity);
void clutter_behaviour_scale_get_bounds (ClutterBehaviourScale *scale,
gdouble *scale_begin,
gdouble *scale_end);
void clutter_behaviour_scale_get_boundsx (ClutterBehaviourScale *scale,
ClutterFixed *scale_begin,
ClutterFixed *scale_end);
ClutterGravity clutter_behaviour_scale_get_gravity (ClutterBehaviourScale *scale);
G_END_DECLS
#endif
#endif /* __CLUTTER_BEHAVIOUR_SCALE_H__ */