Make devices without both width height and pressure work

For devices without finger property information, the current
code does not display anything. Set a default finger width
for frames with zero width, height and pressure.

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

1 files changed, 5 insertions, 1 deletions

diff --git a/src/mtview.c b/src/mtview.c
index f62d64d..9126141 100644
--- a/src/mtview.c
+++ b/src/mtview.c
@@ -7,9 +7,9 @@
 
 #define XMARG 16
 #define YMARG 16
-#define WSCALE 0.5
 #define FLUSH_MS 10
 #define DEF_FRAC 0.15
+#define DEF_WIDTH 0.05
 
 struct windata {
         Display *dsp;
@@ -59,6 +59,10 @@ static void output_touch(struct touch_dev *dev, struct windata *w,
                         minor = major;
                 angle = touch_angle(dev, t->orientation);
         }
+        if (major == 0 && minor == 0) {
+                major = DEF_WIDTH * dy;
+                minor = DEF_WIDTH * dx;
+        }
 
         float ac = fabs(cos(angle));
         float as = fabs(sin(angle));