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authorPeter Hutterer <peter.hutterer@who-t.net>2014-07-02 15:41:22 +1000
committerPeter Hutterer <peter.hutterer@who-t.net>2014-07-03 13:52:57 +1000
commitebc087fbf616171190caf3c80d1da13873cf138b (patch)
tree1e7c969a57af68dcc7fe0dccbcc8eb970b9fe193
parent2219c12c3aa45b80f235e761e87c17fb9ec70eae (diff)
downloadlibinput-ebc087fbf616171190caf3c80d1da13873cf138b.tar.gz
touchpad: reduce button size, use physical sizes where possible
The current 20% is excessive. On the t440s, the button size amounts to ~14mm from the bottom. On the x220 it amounts to ~9mm, leaving only 31mm as actual touchpad. Reduce it to 15% instead, which amounts to 10.5mm on the t440 and 6mm on the x220. Cap the button height further by making buttons a maximum height of 10mm, anything larger than that is excessive anyway. Smaller buttons should be acceptable since we can rely on the bottom edge to be a haptic feedback and thus a good hit-target, somewhat simliar to how screen edges are good hit-targets. The top software buttons stay the same size, but prefer a physical size of 6mm instead (which is 1mm below the button marker line on the T440s). If no y resolution is available, fall back to the 8% which is 5.6mm on the T440s. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Hans de Goede <hdegoede@redhat.com>
-rw-r--r--src/evdev-mt-touchpad-buttons.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/src/evdev-mt-touchpad-buttons.c b/src/evdev-mt-touchpad-buttons.c
index b84198ce..9848a32a 100644
--- a/src/evdev-mt-touchpad-buttons.c
+++ b/src/evdev-mt-touchpad-buttons.c
@@ -605,11 +605,28 @@ tp_init_buttons(struct tp_dispatch *tp,
if (tp->buttons.is_clickpad && !tp->buttons.use_clickfinger) {
int xoffset = absinfo_x->minimum,
yoffset = absinfo_y->minimum;
- tp->buttons.bottom_area.top_edge = height * .8 + yoffset;
+ int yres = absinfo_y->resolution;
+
+ /* button height: 10mm or 15% of the touchpad height,
+ whichever is smaller */
+ if (yres > 1 && (height * 0.15/yres) > 10) {
+ tp->buttons.bottom_area.top_edge =
+ absinfo_y->maximum - 10 * yres;
+ } else {
+ tp->buttons.bottom_area.top_edge = height * .85 + yoffset;
+ }
+
tp->buttons.bottom_area.rightbutton_left_edge = width/2 + xoffset;
if (tp->buttons.has_topbuttons) {
- tp->buttons.top_area.bottom_edge = height * .08 + yoffset;
+ /* T440s has the top button line 5mm from the top,
+ make the buttons 6mm high */
+ if (yres > 1) {
+ tp->buttons.top_area.bottom_edge =
+ yoffset + 6 * yres;
+ } else {
+ tp->buttons.top_area.bottom_edge = height * .08 + yoffset;
+ }
tp->buttons.top_area.rightbutton_left_edge = width * .58 + xoffset;
tp->buttons.top_area.leftbutton_right_edge = width * .42 + xoffset;
} else {