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Added support for touchpads in the Linux evdev code (thanks Francisco!)

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This commit is contained in:
Sam Lantinga 2021-10-07 18:14:16 -07:00
parent 16aeb8d0f5
commit 373216ae5b
3 changed files with 8 additions and 4 deletions
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7
src/core/linux/SDL_evdev.c
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@ -218,8 +218,11 @@ static void SDL_EVDEV_udev_callback(SDL_UDEV_deviceevent udev_event, int udev_cl
switch(udev_event) {
case SDL_UDEV_DEVICEADDED:
if (!(udev_class & (SDL_UDEV_DEVICE_MOUSE | SDL_UDEV_DEVICE_KEYBOARD |
SDL_UDEV_DEVICE_TOUCHSCREEN)))
if (udev_class & SDL_UDEV_DEVICE_TOUCHPAD) {
udev_class |= SDL_UDEV_DEVICE_TOUCHSCREEN;
}
if (!(udev_class & (SDL_UDEV_DEVICE_MOUSE | SDL_UDEV_DEVICE_KEYBOARD | SDL_UDEV_DEVICE_TOUCHSCREEN)))
return;
if ((udev_class & SDL_UDEV_DEVICE_JOYSTICK))

2
src/core/linux/SDL_evdev_capabilities.c
View file

@ -78,7 +78,7 @@ SDL_EVDEV_GuessDeviceClass(unsigned long bitmask_ev[NBITS(EV_MAX)],
if (test_bit(BTN_STYLUS, bitmask_key) || test_bit(BTN_TOOL_PEN, bitmask_key)) {
; /* ID_INPUT_TABLET */
} else if (test_bit(BTN_TOOL_FINGER, bitmask_key) && !test_bit(BTN_TOOL_PEN, bitmask_key)) {
; /* ID_INPUT_TOUCHPAD */
devclass |= SDL_UDEV_DEVICE_TOUCHPAD; /* ID_INPUT_TOUCHPAD */
} else if (test_bit(BTN_MOUSE, bitmask_key)) {
devclass |= SDL_UDEV_DEVICE_MOUSE; /* ID_INPUT_MOUSE */
} else if (test_bit(BTN_TOUCH, bitmask_key)) {

3
src/core/linux/SDL_evdev_capabilities.h
View file

@ -38,7 +38,8 @@ typedef enum
SDL_UDEV_DEVICE_JOYSTICK = 0x0004,
SDL_UDEV_DEVICE_SOUND = 0x0008,
SDL_UDEV_DEVICE_TOUCHSCREEN = 0x0010,
SDL_UDEV_DEVICE_ACCELEROMETER = 0x0020
SDL_UDEV_DEVICE_ACCELEROMETER = 0x0020,
SDL_UDEV_DEVICE_TOUCHPAD = 0x0040
} SDL_UDEV_deviceclass;
#define BITS_PER_LONG (sizeof(unsigned long) * 8)