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2008-06-23 Emmanuele Bassi <ebassi@openedhand.com>

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* clutter/clutter-texture.c:
	(clutter_texture_get_preferred_width),
	(clutter_texture_get_preferred_height),
	(clutter_texture_set_property),
	(clutter_texture_get_property),
	(clutter_texture_class_init),
	(clutter_texture_init): Add the new :keep-aspect-ratio property
	to ClutterTexture; when set to TRUE the texture will return a
	preferred width maintaining the aspect ratio with the given height
	and a preferred height maintaining the aspect ratio with the
	given width. This allows to set the width or the height and have
	the texture automatically request the height or the width respectively
	while maintaining the aspect ratio of the original image.

	* tests/test-script.json: Update to test the new :keep-aspect-ratio
	property.
This commit is contained in:
Emmanuele Bassi 2008-06-23 15:31:12 +00:00
parent dff84094ff
commit 9006de848b
3 changed files with 76 additions and 25 deletions
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19
ChangeLog
View File

@ -1,3 +1,22 @@
2008-06-23 Emmanuele Bassi <ebassi@openedhand.com>
* clutter/clutter-texture.c:
(clutter_texture_get_preferred_width),
(clutter_texture_get_preferred_height),
(clutter_texture_set_property),
(clutter_texture_get_property),
(clutter_texture_class_init),
(clutter_texture_init): Add the new :keep-aspect-ratio property
to ClutterTexture; when set to TRUE the texture will return a
preferred width maintaining the aspect ratio with the given height
and a preferred height maintaining the aspect ratio with the
given width. This allows to set the width or the height and have
the texture automatically request the height or the width respectively
while maintaining the aspect ratio of the original image.
* tests/test-script.json: Update to test the new :keep-aspect-ratio
property.
2008-06-23 Neil Roberts <neil@o-hand.com>
Bug 918 - Group doesn't clip if it's children are clipped

54
clutter/clutter-texture.c
View File

@ -95,6 +95,7 @@ struct _ClutterTexturePrivate
guchar *local_data;
guint in_dispose : 1;
guint keep_aspect_ratio : 1;
};
enum
@ -108,7 +109,8 @@ enum
PROP_REPEAT_X,
PROP_FILTER_QUALITY,
PROP_COGL_TEXTURE,
PROP_FILENAME
PROP_FILENAME,
PROP_KEEP_ASPECT_RATIO
};
enum
@ -338,17 +340,24 @@ clutter_texture_get_preferred_width (ClutterActor *self,
{
if (natural_width_p)
{
if ((for_height < 0) || (priv->height <= 0))
if (!priv->keep_aspect_ratio ||
for_height < 0 ||
priv->height <= 0)
{
*natural_width_p = CLUTTER_UNITS_FROM_DEVICE (priv->width);
}
else
{
/* Set the natural width so as to preserve the aspect ratio */
ClutterFixed ratio =
clutter_qdivx (CLUTTER_INT_TO_FIXED (priv->width),
ClutterFixed ratio, height;
ratio = clutter_qdivx (CLUTTER_INT_TO_FIXED (priv->width),
CLUTTER_INT_TO_FIXED (priv->height));
*natural_width_p = CLUTTER_UNITS_FROM_FIXED (
clutter_qmulx (ratio, CLUTTER_UNITS_TO_FIXED (for_height)));
height = CLUTTER_UNITS_TO_FIXED (for_height);
*natural_width_p =
CLUTTER_UNITS_FROM_FIXED (clutter_qmulx (ratio, height));
}
}
}
@ -376,17 +385,24 @@ clutter_texture_get_preferred_height (ClutterActor *self,
{
if (natural_height_p)
{
if ((for_width < 0) || (priv->width <= 0))
if (!priv->keep_aspect_ratio ||
for_width < 0 ||
priv->width <= 0)
{
*natural_height_p = CLUTTER_UNITS_FROM_DEVICE (priv->height);
}
else
{
/* Set the natural height so as to preserve the aspect ratio */
ClutterFixed ratio =
clutter_qdivx (CLUTTER_INT_TO_FIXED (priv->height),
ClutterFixed ratio, width;
ratio = clutter_qdivx (CLUTTER_INT_TO_FIXED (priv->height),
CLUTTER_INT_TO_FIXED (priv->width));
*natural_height_p = CLUTTER_UNITS_FROM_FIXED (
clutter_qmulx (ratio, CLUTTER_UNITS_TO_FIXED (for_width)));
width = CLUTTER_UNITS_TO_FIXED (for_width);
*natural_height_p =
CLUTTER_UNITS_FROM_FIXED (clutter_qmulx (ratio, width));
}
}
}
@ -561,6 +577,9 @@ clutter_texture_set_property (GObject *object,
case PROP_NO_SLICE:
priv->no_slice = g_value_get_boolean (value);
break;
case PROP_KEEP_ASPECT_RATIO:
priv->keep_aspect_ratio = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -608,6 +627,9 @@ clutter_texture_get_property (GObject *object,
case PROP_NO_SLICE:
g_value_set_boolean (value, priv->no_slice);
break;
case PROP_KEEP_ASPECT_RATIO:
g_value_set_boolean (value, priv->keep_aspect_ratio);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -723,6 +745,15 @@ clutter_texture_class_init (ClutterTextureClass *klass)
NULL,
G_PARAM_WRITABLE));
g_object_class_install_property
(gobject_class, PROP_KEEP_ASPECT_RATIO,
g_param_spec_boolean ("keep-aspect-ratio",
"Keep Aspect Ratio",
"Keep the aspect ratio of the texture when "
"requesting the preferred width or height",
FALSE,
CLUTTER_PARAM_READWRITE));
/**
* ClutterTexture::size-change:
* @texture: the texture which received the signal
@ -849,6 +880,7 @@ clutter_texture_init (ClutterTexture *self)
priv->texture = COGL_INVALID_HANDLE;
priv->fbo_handle = COGL_INVALID_HANDLE;
priv->local_data = NULL;
priv->keep_aspect_ratio = FALSE;
}
static void

2
tests/test-script.json
View File

@ -42,7 +42,7 @@
"x" : 100,
"y" : 100,
"width" : "20mm",
"height" : "100px",
"keep-aspect-ratio" : true,
"anchor-x" : "5mm",
"anchor-y" : "5pt",
"opacity" : 100,