Add pixman_region32_copy_from_region16

2 files changed, 32 insertions, 0 deletions

diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h
index f4db687..82a0d3c 100644
--- a/pixman/pixman-private.h
+++ b/pixman/pixman-private.h
@@ -694,6 +694,11 @@ pixman_image_can_get_solid (pixman_image_t *image);
 #define PIXMAN_EXPORT
 #endif
 
+/* Helper for 32 bit regions */
+pixman_bool_t
+pixman_region32_copy_from_region16 (pixman_region32_t *dst,
+				    pixman_region16_t *src);
+
 #ifdef PIXMAN_TIMING
 
 /* Timing */
diff --git a/pixman/pixman-region32.c b/pixman/pixman-region32.c
index 5a62b3e..4b5598d 100644
--- a/pixman/pixman-region32.c
+++ b/pixman/pixman-region32.c
@@ -38,4 +38,31 @@ typedef struct {
 
 #define PREFIX(x) pixman_region32##x
 
+pixman_bool_t
+pixman_region32_copy_from_region16 (pixman_region32_t *dst,
+				    pixman_region16_t *src)
+{
+    int n_boxes, i;
+    pixman_box16_t *boxes16;
+    pixman_box32_t *boxes32;
+    
+    boxes16 = pixman_region_rectangles (src, &n_boxes);
+
+    boxes32 = pixman_malloc_ab (n_boxes, sizeof (pixman_box32_t));
+
+    if (!boxes32)
+	return FALSE;
+    
+    for (i = 0; i < n_boxes; ++i)
+    {
+	boxes32[i].x1 = boxes16[i].x1;
+	boxes32[i].y1 = boxes16[i].y1;
+	boxes32[i].x2 = boxes16[i].x2;
+	boxes32[i].y2 = boxes16[i].y2;
+    }
+
+    pixman_region32_fini (dst);
+    return pixman_region32_init_rects (dst, boxes32, n_boxes);
+}
+
 #include "pixman-region.c"