Changeset 6301a24f in mainline for uspace/lib/gfx/src/coord.c

Timestamp:

2020-06-05T20:20:06Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8aef01c

Parents:

d70e7b7b

Message:

Window previews need to be drawn as part of ds_display_paint

File:

• uspace/lib/gfx/src/coord.c (modified) (4 diffs)

uspace/lib/gfx/src/coord.c

@@ -37 +37 @@
 #include <macros.h>
 #include <stdbool.h>
+#include <stddef.h>
 
 /** Add two vectors.
@@ -192 +193 @@
  * If the two rectangles do not intersect, the result will be an empty
  * rectangle (check with gfx_rect_is_empty()). The resulting rectangle
- * is always sorted.
+ * is always sorted. If @a clip is NULL, no clipping is performed.
  *
  * @param rect Source rectangle
- * @param clip Clipping rectangle
+ * @param clip Clipping rectangle or @c NULL
  * @param dest Place to store clipped rectangle
  */
@@ -201 +202 @@
 {
         gfx_rect_t srect, sclip;
+
+        if (clip == NULL) {
+                *dest = *rect;
+                return;
+        }
 
         gfx_rect_points_sort(rect, &srect);
@@ -235 +241 @@
 }
 
+/** Determine if two rectangles share any pixels
+ *
+ * @param a First rectangle
+ * @param b Second rectangle
+ * @return @c true iff rectangles share any pixels
+ */
+bool gfx_rect_is_incident(gfx_rect_t *a, gfx_rect_t *b)
+{
+        gfx_rect_t r;
+
+        gfx_rect_clip(a, b, &r);
+        return !gfx_rect_is_empty(&r);
+}
+
 /** Get rectangle dimensions.
  *