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| -rw-r--r-- | src/synaptics.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/synaptics.c b/src/synaptics.c index d0a6c48..5b95d9d 100644 --- a/src/synaptics.c +++ b/src/synaptics.c @@ -2507,6 +2507,28 @@ clickpad_guess_clickfingers(SynapticsPrivate * priv, close_point >>= 1; } + /* Some trackpads touchpad only track two touchpoints but announce + BTN_TOOL_TRIPLETAP (which sets hw->numFingers to 3). + This can affect clickfingers, in the following ways: + * one finger down: normal click + * two fingers down, close together: 2 finger click + * two fingers down, apart: normal click + * three fingers down, close together: 3 finger click + * three fingers down, with two grouped next to each other: should be + * 2-finger click but we can't detect this. + * so: if two detected fingers are close together and HW says three + * fingers, make it three fingers. + * if two detected fingers are apart and HW says three fingers, make + * it a two-finger click, guessing that the third finger is somewhere + * close to another finger. + */ + if (hw->numFingers >= 3 && nfingers < hw->numFingers) { + if (!nfingers) /* touchpoints too far apart */ + nfingers = 2; + else + nfingers++; + } + return nfingers; } |