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backends: Add MetaCursorSprite::texture-changed signal

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As wayland implements the cursor role, it consists of a persistent
MetaCursorSprite that gets the backing texture changed. This is
inconvenient for the places using MetaCursorTracker to track cursor
changes, as they actually track MetaCursorSprites.

This signal will be used to trigger emission of
MetaCursorTracker::cursor-changed, which will make users able to
update accordingly.

https://bugzilla.gnome.org/show_bug.cgi?id=754806
This commit is contained in:
Carlos Garnacho 2017-11-16 19:16:54 +01:00
parent b1a0bf8916
commit bcbcd6a68c
1 changed files with 14 additions and 0 deletions
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14
src/backends/meta-cursor.c
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@ -37,6 +37,7 @@
enum {
PREPARE_AT,
TEXTURE_CHANGED,
LAST_SIGNAL
};
@ -266,11 +267,18 @@ meta_cursor_sprite_set_texture (MetaCursorSprite *self,
int hot_x,
int hot_y)
{
if (self->texture == COGL_TEXTURE_2D (texture) &&
self->hot_x == hot_x &&
self->hot_y == hot_y)
return;
g_clear_pointer (&self->texture, cogl_object_unref);
if (texture)
self->texture = cogl_object_ref (texture);
self->hot_x = hot_x;
self->hot_y = hot_y;
g_signal_emit (self, signals[TEXTURE_CHANGED], 0);
}
void
@ -365,4 +373,10 @@ meta_cursor_sprite_class_init (MetaCursorSpriteClass *klass)
G_TYPE_NONE, 2,
G_TYPE_INT,
G_TYPE_INT);
signals[TEXTURE_CHANGED] = g_signal_new ("texture-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
}