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box-layout: Add knobs for controlling animations

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ClutterLayoutManager does not have any state associated with it, and
defers all the state to its sub-classes.

The BoxLayout is thus in charge of controlling:

  • whether or not animations should be used
  • the duration of the animation
  • the easing mode of the animation

By adding three new properties:

  • ClutterBoxLayout:use-animations
  • ClutterBoxLayout:easing-duration
  • ClutterBoxLayout:easing-mode

And their relative accessors pairs we can make BoxLayout decide whether
or not, and with which parameters, call the begin_animation() method of
ClutterLayoutManager.

The test-box-layout has been modified to reflect this new functionality,
by checking the key-press event for the 'a' key symbol to toggle the use
of animations.
This commit is contained in:
Emmanuele Bassi 2009-12-13 01:07:44 +00:00
parent 3c2e91aef5
commit 2e6397c391
4 changed files with 368 additions and 52 deletions
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308
clutter/clutter-box-layout.c
View File

@ -94,11 +94,14 @@ struct _ClutterBoxLayoutPrivate
guint spacing;
gulong easing_mode;
guint easing_duration;
GHashTable *allocations;
guint is_vertical : 1;
guint is_pack_start : 1;
guint is_animating : 1;
guint use_animations : 1;
};
struct _ClutterBoxChild
@ -131,7 +134,10 @@ enum
PROP_SPACING,
PROP_VERTICAL,
PROP_PACK_START
PROP_PACK_START,
PROP_USE_ANIMATIONS,
PROP_EASING_MODE,
PROP_EASING_DURATION
};
G_DEFINE_TYPE (ClutterBoxChild,
@ -170,9 +176,18 @@ box_child_set_align (ClutterBoxChild *self,
if (x_changed || y_changed)
{
ClutterLayoutManager *layout;
ClutterBoxLayout *box;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
clutter_layout_manager_begin_animation (layout, 500, CLUTTER_EASE_OUT_CUBIC);
box = CLUTTER_BOX_LAYOUT (layout);
if (box->priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
box->priv->easing_duration,
box->priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (x_changed)
@ -207,9 +222,18 @@ box_child_set_fill (ClutterBoxChild *self,
if (x_changed || y_changed)
{
ClutterLayoutManager *layout;
ClutterBoxLayout *box;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
clutter_layout_manager_begin_animation (layout, 500, CLUTTER_EASE_OUT_CUBIC);
box = CLUTTER_BOX_LAYOUT (layout);
if (box->priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
box->priv->easing_duration,
box->priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
if (x_changed)
@ -227,11 +251,20 @@ box_child_set_expand (ClutterBoxChild *self,
if (self->expand != expand)
{
ClutterLayoutManager *layout;
ClutterBoxLayout *box;
self->expand = expand;
layout = clutter_layout_meta_get_manager (CLUTTER_LAYOUT_META (self));
clutter_layout_manager_begin_animation (layout, 500, CLUTTER_EASE_OUT_CUBIC);
box = CLUTTER_BOX_LAYOUT (layout);
if (box->priv->use_animations)
{
clutter_layout_manager_begin_animation (layout,
box->priv->easing_duration,
box->priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (layout);
g_object_notify (G_OBJECT (self), "expand");
@ -723,7 +756,7 @@ allocate_box_child (ClutterBoxLayout *self,
allocate_fill (child, &child_box, box_child);
if (priv->is_animating)
if (priv->use_animations && priv->is_animating)
{
ClutterLayoutManager *manager = CLUTTER_LAYOUT_MANAGER (self);
ClutterActorBox *start = NULL;
@ -987,6 +1020,18 @@ clutter_box_layout_set_property (GObject *gobject,
clutter_box_layout_set_pack_start (self, g_value_get_boolean (value));
break;
case PROP_USE_ANIMATIONS:
clutter_box_layout_set_use_animations (self, g_value_get_boolean (value));
break;
case PROP_EASING_MODE:
clutter_box_layout_set_easing_mode (self, g_value_get_ulong (value));
break;
case PROP_EASING_DURATION:
clutter_box_layout_set_easing_duration (self, g_value_get_uint (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
@ -1015,6 +1060,18 @@ clutter_box_layout_get_property (GObject *gobject,
g_value_set_boolean (value, priv->is_pack_start);
break;
case PROP_USE_ANIMATIONS:
g_value_set_boolean (value, priv->use_animations);
break;
case PROP_EASING_MODE:
g_value_set_ulong (value, priv->easing_mode);
break;
case PROP_EASING_DURATION:
g_value_set_uint (value, priv->easing_duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
@ -1101,6 +1158,62 @@ clutter_box_layout_class_init (ClutterBoxLayoutClass *klass)
0, G_MAXUINT, 0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_SPACING, pspec);
/**
* ClutterBoxLayout:use-animations:
*
* Whether the #ClutterBoxLayout should animate changes in the
* layout properties
*
* Since: 1.2
*/
pspec = g_param_spec_boolean ("use-animations",
"Use Animations",
"Whether layout changes should be animated",
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_USE_ANIMATIONS, pspec);
/**
* ClutterBoxLayout:easing-mode:
*
* The easing mode for the animations, in case
* #ClutterBoxLayout:use-animations is set to %TRUE
*
* The easing mode has the same semantics of #ClutterAnimation:mode: it can
* either be a value from the #ClutterAnimationMode enumeration, like
* %CLUTTER_EASE_OUT_CUBIC, or a logical id as returned by
* clutter_alpha_register_func()
*
* The default value is %CLUTTER_EASE_OUT_CUBIC
*
* Since: 1.2
*/
pspec = g_param_spec_ulong ("easing-mode",
"Easing Mode",
"The easing mode of the animations",
0, G_MAXULONG,
CLUTTER_EASE_OUT_CUBIC,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_EASING_MODE, pspec);
/**
* ClutterBoxLayout:easing-duration:
*
* The duration of the animations, in case #ClutterBoxLayout:use-animations
* is set to %TRUE
*
* The duration is expressed in milliseconds
*
* Since: 1.2
*/
pspec = g_param_spec_uint ("easing-duration",
"Easing Duration",
"The duration of the animations",
0, G_MAXUINT,
500,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, PROP_EASING_DURATION, pspec);
}
static void
@ -1114,6 +1227,10 @@ clutter_box_layout_init (ClutterBoxLayout *layout)
priv->is_pack_start = FALSE;
priv->spacing = 0;
priv->use_animations = FALSE;
priv->easing_mode = CLUTTER_EASE_OUT_CUBIC;
priv->easing_duration = 500;
priv->allocations =
g_hash_table_new_full (NULL, NULL,
NULL,
@ -1161,7 +1278,15 @@ clutter_box_layout_set_spacing (ClutterBoxLayout *layout,
priv->spacing = spacing;
manager = CLUTTER_LAYOUT_MANAGER (layout);
clutter_layout_manager_begin_animation (manager, 500, CLUTTER_EASE_OUT_CUBIC);
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (manager,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (manager);
g_object_notify (G_OBJECT (layout), "spacing");
}
@ -1212,7 +1337,15 @@ clutter_box_layout_set_vertical (ClutterBoxLayout *layout,
priv->is_vertical = vertical ? TRUE : FALSE;
manager = CLUTTER_LAYOUT_MANAGER (layout);
clutter_layout_manager_begin_animation (manager, 500, CLUTTER_EASE_OUT_CUBIC);
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (manager,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (manager);
g_object_notify (G_OBJECT (layout), "vertical");
}
@ -1266,7 +1399,15 @@ clutter_box_layout_set_pack_start (ClutterBoxLayout *layout,
priv->is_pack_start = pack_start ? TRUE : FALSE;
manager = CLUTTER_LAYOUT_MANAGER (layout);
clutter_layout_manager_begin_animation (manager, 500, CLUTTER_EASE_OUT_CUBIC);
if (priv->use_animations)
{
clutter_layout_manager_begin_animation (manager,
priv->easing_duration,
priv->easing_mode);
}
else
clutter_layout_manager_layout_changed (manager);
g_object_notify (G_OBJECT (layout), "pack-start");
}
@ -1670,3 +1811,154 @@ clutter_box_layout_get_expand (ClutterBoxLayout *layout,
return CLUTTER_BOX_CHILD (meta)->expand;
}
/**
* clutter_box_layout_set_use_animations:
* @layout: a #ClutterBoxLayout
* @animate: %TRUE if the @layout should use animations
*
* Sets whether @layout should animate changes in the layout properties
*
* The duration of the animations is controlled by
* clutter_box_layout_set_easing_duration(); the easing mode to be used
* by the animations is controlled by clutter_box_layout_set_easing_mode()
*
* Since: 1.2
*/
void
clutter_box_layout_set_use_animations (ClutterBoxLayout *layout,
gboolean animate)
{
ClutterBoxLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_BOX_LAYOUT (layout));
priv = layout->priv;
if (priv->use_animations != animate)
{
priv->use_animations = animate;
g_object_notify (G_OBJECT (layout), "use-animations");
}
}
/**
* clutter_box_layout_get_use_animations:
* @layout: a #ClutterBoxLayout
*
* Retrieves whether @layout should animate changes in the layout properties
*
* Since clutter_box_layout_set_use_animations()
*
* Return value: %TRUE if the animations should be used, %FALSE otherwise
*
* Since: 1.2
*/
gboolean
clutter_box_layout_get_use_animations (ClutterBoxLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_BOX_LAYOUT (layout), FALSE);
return layout->priv->use_animations;
}
/**
* clutter_box_layout_set_easing_mode:
* @layout: a #ClutterBoxLayout
* @mode: an easing mode, either from #ClutterAnimationMode or a logical id
* from clutter_alpha_register_func()
*
* Sets the easing mode to be used by @layout when animating changes in layout
* properties
*
* Use clutter_box_layout_set_use_animations() to enable and disable the
* animations
*
* Since: 1.2
*/
void
clutter_box_layout_set_easing_mode (ClutterBoxLayout *layout,
gulong mode)
{
ClutterBoxLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_BOX_LAYOUT (layout));
priv = layout->priv;
if (priv->easing_mode != mode)
{
priv->easing_mode = mode;
g_object_notify (G_OBJECT (layout), "easing-mode");
}
}
/**
* clutter_box_layout_get_easing_mode:
* @layout: a #ClutterBoxLayout
*
* Retrieves the easing mode set using clutter_box_layout_set_easing_mode()
*
* Return value: an easing mode
*
* Since: 1.2
*/
gulong
clutter_box_layout_get_easing_mode (ClutterBoxLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_BOX_LAYOUT (layout),
CLUTTER_EASE_OUT_CUBIC);
return layout->priv->easing_mode;
}
/**
* clutter_box_layout_set_easing_duration:
* @layout: a #ClutterBoxLayout
* @msecs: the duration of the animations, in milliseconds
*
* Sets the duration of the animations used by @layout when animating changes
* in the layout properties
*
* Use clutter_box_layout_set_use_animations() to enable and disable the
* animations
*
* Since: 1.2
*/
void
clutter_box_layout_set_easing_duration (ClutterBoxLayout *layout,
guint msecs)
{
ClutterBoxLayoutPrivate *priv;
g_return_if_fail (CLUTTER_IS_BOX_LAYOUT (layout));
priv = layout->priv;
if (priv->easing_duration != msecs)
{
priv->easing_duration = msecs;
g_object_notify (G_OBJECT (layout), "easing-duration");
}
}
/**
* clutter_box_layout_get_easing_duration:
* @layout: a #ClutterBoxLayout
*
* Retrieves the duration set using clutter_box_layout_set_easing_duration()
*
* Return value: the duration of the animations, in milliseconds
*
* Since: 1.2
*/
guint
clutter_box_layout_get_easing_duration (ClutterBoxLayout *layout)
{
g_return_val_if_fail (CLUTTER_IS_BOX_LAYOUT (layout), 500);
return layout->priv->easing_duration;
}

10
clutter/clutter-box-layout.h
View File

@ -138,6 +138,16 @@ void clutter_box_layout_set_expand (ClutterBoxLayout *la
gboolean clutter_box_layout_get_expand (ClutterBoxLayout *layout,
ClutterActor *actor);
void clutter_box_layout_set_use_animations (ClutterBoxLayout *layout,
gboolean animate);
gboolean clutter_box_layout_get_use_animations (ClutterBoxLayout *layout);
void clutter_box_layout_set_easing_mode (ClutterBoxLayout *layout,
gulong mode);
gulong clutter_box_layout_get_easing_mode (ClutterBoxLayout *layout);
void clutter_box_layout_set_easing_duration (ClutterBoxLayout *layout,
guint msecs);
guint clutter_box_layout_get_easing_duration (ClutterBoxLayout *layout);
G_END_DECLS
#endif /* __CLUTTER_BOX_LAYOUT_H__ */

8
doc/reference/clutter/clutter-sections.txt
View File

@ -1937,6 +1937,14 @@ clutter_box_layout_get_expand
clutter_box_layout_set_fill
clutter_box_layout_get_fill
<SUBSECTION>
clutter_box_layout_set_use_animations
clutter_box_layout_get_use_animations
clutter_box_layout_set_easing_duration
clutter_box_layout_get_easing_duration
clutter_box_layout_set_easing_mode
clutter_box_layout_get_easing_mode
<SUBSECTION Standard>
CLUTTER_TYPE_BOX_LAYOUT
CLUTTER_BOX_LAYOUT

6
tests/interactive/test-box-layout.c
View File

@ -29,6 +29,7 @@
"Press v\t\342\236\236\tSwitch horizontal/vertical\n" \
"Press p\t\342\236\236\tSwitch pack start/end\n" \
"Press s\t\342\236\236\tIncrement spacing (up to 12px)\n" \
"Press a\t\342\236\236\tSwitch animations on/off\n" \
"Press q\t\342\236\236\tQuit"
static ClutterActor *hover_actor = NULL;
@ -167,6 +168,11 @@ key_release_cb (ClutterActor *actor,
switch (clutter_event_get_key_symbol (event))
{
case CLUTTER_a:
toggle = clutter_box_layout_get_use_animations (layout);
clutter_box_layout_set_use_animations (layout, !toggle);
break;
case CLUTTER_v:
toggle = clutter_box_layout_get_vertical (layout);
clutter_box_layout_set_vertical (layout, !toggle);