Add scale gesture

Moving two fingers apart or closer together will trigger the gesture.
This patch computes the scaling gesture and maps it to mouse buttons
12 and 13.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gestures.h b/src/gestures.h
index 5630d4c..5739d45 100644
--- a/src/gestures.h
+++ b/src/gestures.h
@@ -30,10 +30,11 @@
 #define GS_HSCROLL 3
 #define GS_VSWIPE 4
 #define GS_HSWIPE 5
+#define GS_SCALE 6
 
 struct Gestures {
         unsigned type, btmask, btdata;
-        int same_fingers, dx, dy;
+        int same_fingers, dx, dy, scale;
 };
 
 void extract_gestures(struct Gestures *gs, struct MTouch* mt);