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st-icon: Add support for -st-shadow property

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Add a drop shadow to the icon texture if the -st-shadow property is
specified.

https://bugzilla.gnome.org/show_bug.cgi?id=635608
This commit is contained in:
Florian Müllner 2010-11-23 13:48:23 +01:00
parent 6e902f5fec
commit 4f7a28863c
1 changed files with 81 additions and 2 deletions
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79
src/st/st-icon.c
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@ -56,6 +56,10 @@ struct _StIconPrivate
gint prop_icon_size; /* icon size set as property */
gint theme_icon_size; /* icon size from theme node */
gint icon_size; /* icon size we are using */
CoglHandle shadow_material;
float shadow_width;
float shadow_height;
};
static void st_icon_update (StIcon *icon);
@ -145,6 +149,12 @@ st_icon_dispose (GObject *gobject)
priv->gicon = NULL;
}
if (priv->shadow_material)
{
cogl_handle_unref (priv->shadow_material);
priv->shadow_material = COGL_INVALID_HANDLE;
}
G_OBJECT_CLASS (st_icon_parent_class)->dispose (gobject);
}
@ -227,8 +237,31 @@ st_icon_paint (ClutterActor *actor)
CLUTTER_ACTOR_CLASS (st_icon_parent_class)->paint (actor);
if (priv->icon_texture)
{
if (priv->shadow_material)
{
StThemeNode *node = st_widget_get_theme_node (ST_WIDGET (actor));
StShadow *shadow_spec = st_theme_node_get_shadow (node);
ClutterActorBox allocation;
float width, height;
clutter_actor_get_allocation_box (priv->icon_texture, &allocation);
clutter_actor_box_get_size (&allocation, &width, &height);
allocation.x1 = (width - priv->shadow_width) / 2;
allocation.y1 = (height - priv->shadow_height) / 2;
allocation.x2 = allocation.x1 + priv->shadow_width;
allocation.y2 = allocation.y1 + priv->shadow_height;
_st_paint_shadow_with_opacity (shadow_spec,
priv->shadow_material,
&allocation,
clutter_actor_get_paint_opacity (priv->icon_texture));
}
clutter_actor_paint (priv->icon_texture);
}
}
static void
st_icon_map (ClutterActor *actor)
@ -326,6 +359,45 @@ st_icon_init (StIcon *self)
self->priv->icon_size = DEFAULT_ICON_SIZE;
self->priv->prop_icon_size = -1;
self->priv->icon_type = DEFAULT_ICON_TYPE;
self->priv->icon_texture = COGL_INVALID_HANDLE;
self->priv->shadow_width = -1;
self->priv->shadow_height = -1;
}
static void
st_icon_update_shadow_material (StIcon *icon)
{
StIconPrivate *priv = icon->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (icon));
StShadow *shadow_spec = st_theme_node_get_shadow (theme_node);
if (priv->shadow_material)
{
cogl_handle_unref (priv->shadow_material);
priv->shadow_material = COGL_INVALID_HANDLE;
}
if (shadow_spec)
{
CoglHandle material;
gint width, height;
clutter_texture_get_base_size (CLUTTER_TEXTURE (priv->icon_texture),
&width, &height);
material = _st_create_shadow_material_from_actor (shadow_spec,
priv->icon_texture);
priv->shadow_material = material;
priv->shadow_width = width;
priv->shadow_height = height;
}
}
static void
on_pixbuf_changed (ClutterTexture *texture,
StIcon *icon)
{
st_icon_update_shadow_material (icon);
}
static void
@ -366,7 +438,14 @@ st_icon_update (StIcon *icon)
priv->icon_size);
}
if (priv->icon_texture)
{
st_icon_update_shadow_material (icon);
clutter_actor_set_parent (priv->icon_texture, CLUTTER_ACTOR (icon));
/* "pixbuf-change" is actually a misnomer for "texture-changed" */
g_signal_connect (priv->icon_texture, "pixbuf-change",
G_CALLBACK (on_pixbuf_changed), icon);
}
}
static gboolean