mouse: emulate scrolling with left+right pressed
Many mice and trackballs without scroll wheels also lack a middle
button, meaning that they can't activate scroll wheel emulation.
Activating it when the left and right buttons are held simultaneously
improves the user experience with such devices.
BUG=b:234160991
TEST=With Logitech Trackman Marble (which has no middle button), check
scrolling emulation works. With 3M Ergonomic Mouse (which has a
middle button but no wheel) check that middle-click still works.
Change-Id: Iffe1de3503e97562952ff451549cd4118abf1f89
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/gestures/+/3673134
Tested-by: Harry Cutts <hcutts@chromium.org>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Commit-Queue: Harry Cutts <hcutts@chromium.org>
1 file changed
