diff options
Diffstat (limited to 'services/inputflinger/EventHub.cpp')
| -rw-r--r-- | services/inputflinger/EventHub.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/services/inputflinger/EventHub.cpp b/services/inputflinger/EventHub.cpp index 4d54d56..6b60c7c 100644 --- a/services/inputflinger/EventHub.cpp +++ b/services/inputflinger/EventHub.cpp @@ -131,6 +131,13 @@ uint32_t getAbsAxisUsage(int32_t axis, uint32_t deviceClasses) { } } + // External stylus gets the pressure axis + if (deviceClasses & INPUT_DEVICE_CLASS_EXTERNAL_STYLUS) { + if (axis == ABS_PRESSURE) { + return INPUT_DEVICE_CLASS_EXTERNAL_STYLUS; + } + } + // Joystick devices get the rest. return deviceClasses & INPUT_DEVICE_CLASS_JOYSTICK; } @@ -1185,6 +1192,16 @@ status_t EventHub::openDeviceLocked(const char *devicePath) { && test_bit(ABS_X, device->absBitmask) && test_bit(ABS_Y, device->absBitmask)) { device->classes |= INPUT_DEVICE_CLASS_TOUCH; + // Is this a BT stylus? + } else if ((test_bit(ABS_PRESSURE, device->absBitmask) || + test_bit(BTN_TOUCH, device->keyBitmask)) + && !test_bit(ABS_X, device->absBitmask) + && !test_bit(ABS_Y, device->absBitmask)) { + device->classes |= INPUT_DEVICE_CLASS_EXTERNAL_STYLUS; + // Keyboard will try to claim some of the buttons but we really want to reserve those so we + // can fuse it with the touch screen data, so just take them back. Note this means an + // external stylus cannot also be a keyboard device. + device->classes &= ~INPUT_DEVICE_CLASS_KEYBOARD; } // See if this device is a joystick. |