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window-actor: Paint the shape region with cairo

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https://bugzilla.gnome.org/show_bug.cgi?id=676052
This commit is contained in:
Jasper St. Pierre 2012-05-14 15:35:16 -03:00
parent f1aada0fae
commit c47de98c88
1 changed files with 12 additions and 24 deletions
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36
src/compositor/meta-window-actor.c
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@ -2000,9 +2000,9 @@ generate_mask (MetaWindowActor *self,
guchar *mask_data;
guint tex_width, tex_height;
CoglHandle paint_tex, mask_texture;
int i;
int n_rects;
int stride;
cairo_t *cr;
cairo_surface_t *surface;
paint_tex = meta_shaped_texture_get_texture (META_SHAPED_TEXTURE (priv->actor));
if (paint_tex == COGL_INVALID_HANDLE)
@ -2016,30 +2016,18 @@ generate_mask (MetaWindowActor *self,
/* Create data for an empty image */
mask_data = g_malloc0 (stride * tex_height);
n_rects = cairo_region_num_rectangles (shape_region);
surface = cairo_image_surface_create_for_data (mask_data,
CAIRO_FORMAT_A8,
tex_width,
tex_height,
stride);
cr = cairo_create (surface);
/* Fill in each rectangle. */
for (i = 0; i < n_rects; i ++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (shape_region, i, &rect);
gdk_cairo_region (cr, shape_region);
cairo_fill (cr);
gint x1 = rect.x, x2 = x1 + rect.width;
gint y1 = rect.y, y2 = y1 + rect.height;
guchar *p;
/* Clip the rectangle to the size of the texture */
x1 = CLAMP (x1, 0, (gint) tex_width - 1);
x2 = CLAMP (x2, x1, (gint) tex_width);
y1 = CLAMP (y1, 0, (gint) tex_height - 1);
y2 = CLAMP (y2, y1, (gint) tex_height);
/* Fill the rectangle */
for (p = mask_data + y1 * stride + x1;
y1 < y2;
y1++, p += stride)
memset (p, 255, x2 - x1);
}
cairo_destroy (cr);
cairo_surface_destroy (surface);
if (meta_texture_rectangle_check (paint_tex))
{