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-rw-r--r--src/mtstate.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/mtstate.c b/src/mtstate.c
index 313550b..771048d 100644
--- a/src/mtstate.c
+++ b/src/mtstate.c
@@ -25,6 +25,7 @@
#define TOUCH_SCALE(caps) (0.05 * caps->abs[MTDEV_TOUCH_MAJOR].maximum)
#define THUMB_TOUCH(hw) (1.2 * hw->touch_minor)
+#define THUMB_TOUCH_SIZE(hw, caps) (0.14 * get_cap_xsize(caps))
#define THUMB_WIDTH_TOUCH(hw) (4 * hw->touch_major)
#define THUMB_WIDTH_WIDTH(hw) (1.2 * hw->width_minor)
#define THUMB_WIDTH_SIZE(hw, caps) (0.25 * get_cap_xsize(caps))
@@ -56,10 +57,13 @@ static int is_thumb(const struct FingerState *hw,
const struct Capabilities *caps)
{
if (!caps->has_abs[MTDEV_TOUCH_MAJOR] ||
- !caps->has_abs[MTDEV_TOUCH_MINOR] ||
- !caps->has_abs[MTDEV_WIDTH_MAJOR] ||
- !caps->has_abs[MTDEV_WIDTH_MINOR])
+ !caps->has_abs[MTDEV_TOUCH_MINOR])
return 0;
+ if (!caps->has_abs[MTDEV_WIDTH_MAJOR] ||
+ !caps->has_abs[MTDEV_WIDTH_MINOR]) {
+ return hw->touch_major > THUMB_TOUCH(hw) &&
+ hw->touch_major > THUMB_TOUCH_SIZE(hw, caps);
+ }
return hw->touch_major > THUMB_TOUCH(hw) &&
hw->width_major > THUMB_WIDTH_TOUCH(hw) &&
hw->width_major > THUMB_WIDTH_WIDTH(hw) &&