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2008-05-09 Emmanuele Bassi <ebassi@openedhand.com>

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Bug #902 - Support transform from G_TYPE_INT to ClutterUnit

	* clutter/clutter-units.c:
	(clutter_value_transform_int_unit),
	(clutter_unit_get_type): Add GValue transformation function from
	integer values to ClutterUnit. (#902)

	(param_unit_validate): Fix validation for ClutterParamSpecUnit;
	this allows writable ClutterUnit properties.

	* clutter/clutter-fixed.c:
	(clutter_value_transform_int_fixed),
	(clutter_value_transform_double_fixed),
	(clutter_value_transform_float_fixed): Add GValue transformation
	functions from native types (int, double, float) to ClutterFixed.

	(clutter_fixed_get_type): Register the new transformation functions.

	(param_fixed_validate): Fix validation for ClutterParamSpecUnit;
	this allows writable ClutterFixed properties.
This commit is contained in:
Emmanuele Bassi 2008-05-09 10:58:26 +00:00
parent ef084cfa95
commit 1abccbad21
5 changed files with 161 additions and 24 deletions
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23
ChangeLog
View file

@ -1,3 +1,26 @@
2008-05-09 Emmanuele Bassi <ebassi@openedhand.com>
Bug #902 - Support transform from G_TYPE_INT to ClutterUnit
* clutter/clutter-units.c:
(clutter_value_transform_int_unit),
(clutter_unit_get_type): Add GValue transformation function from
integer values to ClutterUnit. (#902)
(param_unit_validate): Fix validation for ClutterParamSpecUnit;
this allows writable ClutterUnit properties.
* clutter/clutter-fixed.c:
(clutter_value_transform_int_fixed),
(clutter_value_transform_double_fixed),
(clutter_value_transform_float_fixed): Add GValue transformation
functions from native types (int, double, float) to ClutterFixed.
(clutter_fixed_get_type): Register the new transformation functions.
(param_fixed_validate): Fix validation for ClutterParamSpecUnit;
this allows writable ClutterFixed properties.
2008-05-07 Ivan Leben <ivan@o-hand.com>
* clutter/cogl/cogl.h.in:

1
clutter/clutter-deprecated.h
View file

@ -43,5 +43,6 @@
#define clutter_shader_is_bound clutter_shader_is_bound_REPLACED_BY_clutter_shader_is_compiled
#define clutter_texture_new_from_pixbuf clutter_texture_new_from_pixbuf_DEPRECATED_BY_clutter_texture_new_from_file_OR_clutter_texture_new_AND_clutter_texture_set_from_rgb_data
#define clutter_texture_set_pixbuf clutter_texture_set_pixbuf+DEPRECATED_BY_clutter_texture_set_from_rgb_data
#endif /* CLUTTER_DEPRECATED_H */

54
clutter/clutter-fixed.c
View file

@ -1035,7 +1035,7 @@ static void
clutter_value_transform_fixed_int (const GValue *src,
GValue *dest)
{
dest->data[0].v_int = src->data[0].v_int;
dest->data[0].v_int = CLUTTER_FIXED_TO_INT (src->data[0].v_int);
}
static void
@ -1052,6 +1052,28 @@ clutter_value_transform_fixed_float (const GValue *src,
dest->data[0].v_float = CLUTTER_FIXED_TO_FLOAT (src->data[0].v_int);
}
static void
clutter_value_transform_int_fixed (const GValue *src,
GValue *dest)
{
dest->data[0].v_int = CLUTTER_INT_TO_FIXED (src->data[0].v_int);
}
static void
clutter_value_transform_double_fixed (const GValue *src,
GValue *dest)
{
dest->data[0].v_int = CLUTTER_FLOAT_TO_FIXED (src->data[0].v_double);
}
static void
clutter_value_transform_float_fixed (const GValue *src,
GValue *dest)
{
dest->data[0].v_int = CLUTTER_FLOAT_TO_FIXED (src->data[0].v_float);
}
static const GTypeValueTable _clutter_fixed_value_table = {
clutter_value_init_fixed,
NULL,
@ -1078,10 +1100,16 @@ clutter_fixed_get_type (void)
g_value_register_transform_func (_clutter_fixed_type, G_TYPE_INT,
clutter_value_transform_fixed_int);
g_value_register_transform_func (G_TYPE_INT, _clutter_fixed_type,
clutter_value_transform_int_fixed);
g_value_register_transform_func (_clutter_fixed_type, G_TYPE_FLOAT,
clutter_value_transform_fixed_float);
g_value_register_transform_func (G_TYPE_FLOAT, _clutter_fixed_type,
clutter_value_transform_float_fixed);
g_value_register_transform_func (_clutter_fixed_type, G_TYPE_DOUBLE,
clutter_value_transform_fixed_double);
g_value_register_transform_func (G_TYPE_DOUBLE, _clutter_fixed_type,
clutter_value_transform_double_fixed);
}
return _clutter_fixed_type;
@ -1145,13 +1173,27 @@ param_fixed_validate (GParamSpec *pspec,
GValue *value)
{
ClutterParamSpecFixed *fspec = CLUTTER_PARAM_SPEC_FIXED (pspec);
gint oval = value->data[0].v_int;
gint oval = CLUTTER_FIXED_TO_INT (value->data[0].v_int);
gint min, max, val;
value->data[0].v_int = CLAMP (value->data[0].v_int,
fspec->minimum,
fspec->maximum);
g_assert (CLUTTER_IS_PARAM_SPEC_FIXED (pspec));
return value->data[0].v_int != oval;
/* we compare the integer part of the value because the minimum
* and maximum values cover just that part of the representation
*/
min = fspec->minimum;
max = fspec->maximum;
val = CLUTTER_FIXED_TO_INT (value->data[0].v_int);
val = CLAMP (val, min, max);
if (val != oval)
{
value->data[0].v_int = val;
return TRUE;
}
return FALSE;
}
static gint

105
clutter/clutter-units.c
View file

@ -4,7 +4,8 @@
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Tomas Frydrych <tf@openedhand.com>
* Authored By: Tomas Frydrych <tf@openedhand.com>
* Emmanuele Bassi <ebassi@openedhand.com>
*
* Copyright (C) 2007 OpenedHand
*
@ -29,19 +30,65 @@
* @short_description: A logical distance unit.
*
* Clutter units are logical units with granularity greater than that of the
* device units; they are used by #ClutterActorBox and the _units() family of
* ClutterActor functions. To convert between clutter units and device units,
* use #CLUTTER_UNITS_FROM_DEVICE and #CLUTTER_UNITS_TO_DEVICE macros.
* device units; they are used by #ClutterActorBox and the units-based family
* of #ClutterActor functions. To convert between Clutter units and device
* units, use %CLUTTER_UNITS_FROM_DEVICE and %CLUTTER_UNITS_TO_DEVICE macros.
*
* Note: It is expected that as of version 0.6 all dimensions in the public
* Clutter API will be given in clutter units. In order to ease the transition,
* two extra macros have been provided, #CLUTTER_UNITS_TMP_TO_DEVICE and
* #CLUTTER_UNITS_TMP_FROM_DEVICE. In version 0.4 these are identity macros,
* but when the API transition happens will map to #CLUTTER_UNITS_TO_DEVICE and
* #CLUTTER_UNITS_FROM_DEVICE respectively. You can use these in newly written
* code as place holders.
* #ClutterUnit<!-- -->s can be converted from other units like millimeters,
* typographic points (at the current resolution) and percentages. It is
* also possible to convert fixed point values to and from #ClutterUnit
* values.
*
* Since: 0.4
* In order to register a #ClutterUnit property, the #ClutterParamSpecUnit
* #GParamSpec sub-class should be used:
*
* |[
* GParamSpec *pspec;
*
* pspec = clutter_param_spec_unit ("width",
* "Width",
* "Width of the actor, in units",
* 0, CLUTTER_MAXUNIT,
* 0,
* G_PARAM_READWRITE);
* g_object_class_install_property (gobject_class, PROP_WIDTH, pspec);
* ]|
*
* A #GValue holding units can be manipulated using clutter_value_set_unit()
* and clutter_value_get_unit(). #GValue<!-- -->s containing a #ClutterUnit
* value can also be transformed to #GValue<!-- -->s containing integer
* values - with a loss of precision:
*
* |[
* static gboolean
* units_to_int (const GValue *src,
* GValue *dest)
* {
* g_return_val_if_fail (CLUTTER_VALUE_HOLDS_UNIT (src), FALSE);
*
* g_value_init (dest, G_TYPE_INT);
* return g_value_transform (src, &dest);
* }
* ]|
*
* The code above is equivalent to:
*
* |[
* static gboolean
* units_to_int (const GValue *src,
* GValue *dest)
* {
* g_return_val_if_fail (CLUTTER_VALUE_HOLDS_UNIT (src), FALSE);
*
* g_value_init (dest, G_TYPE_INT);
* g_value_set_int (dest,
* CLUTTER_UNITS_TO_INT (clutter_value_get_unit (src)));
*
* return TRUE;
* }
* ]|
*
* #ClutterUnit is available since Clutter 0.4
*/
#ifdef HAVE_CONFIG_H
@ -114,7 +161,14 @@ static void
clutter_value_transform_unit_int (const GValue *src,
GValue *dest)
{
dest->data[0].v_int = src->data[0].v_int;
dest->data[0].v_int = CLUTTER_UNITS_TO_INT (src->data[0].v_int);
}
static void
clutter_value_transform_int_unit (const GValue *src,
GValue *dest)
{
dest->data[0].v_int = CLUTTER_UNITS_FROM_INT (src->data[0].v_int);
}
static const GTypeValueTable _clutter_unit_value_table = {
@ -143,6 +197,8 @@ clutter_unit_get_type (void)
g_value_register_transform_func (_clutter_unit_type, G_TYPE_INT,
clutter_value_transform_unit_int);
g_value_register_transform_func (G_TYPE_INT, _clutter_unit_type,
clutter_value_transform_int_unit);
}
return _clutter_unit_type;
@ -206,13 +262,26 @@ param_unit_validate (GParamSpec *pspec,
GValue *value)
{
ClutterParamSpecUnit *uspec = CLUTTER_PARAM_SPEC_UNIT (pspec);
gint oval = value->data[0].v_int;
gint oval = CLUTTER_UNITS_TO_INT (value->data[0].v_int);
gint min, max, val;
value->data[0].v_int = CLAMP (value->data[0].v_int,
uspec->minimum,
uspec->maximum);
g_assert (CLUTTER_IS_PARAM_SPEC_UNIT (pspec));
return value->data[0].v_int != oval;
/* we compare the integer part of the value because the minimum
* and maximum values cover just that part of the representation
*/
min = uspec->minimum;
max = uspec->maximum;
val = CLUTTER_UNITS_TO_INT (value->data[0].v_int);
val = CLAMP (val, min, max);
if (val != oval)
{
value->data[0].v_int = val;
return TRUE;
}
return FALSE;
}
static gint

2
tests/test-text.c
View file

@ -31,6 +31,8 @@ gboolean idle (gpointer data)
clutter_actor_paint (stage);
++fps;
return TRUE;
}
int