static inline void
process_absolute(struct touchpad_dispatch *touchpad,
struct evdev_device *device,
struct input_event *e)
{
switch (e->code) {
case ABS_PRESSURE:
if (e->value > touchpad->pressure.touch_high &&
!(touchpad->state & TOUCHPAD_STATE_TOUCH))
on_touch(touchpad);
else if (e->value < touchpad->pressure.touch_low &&
touchpad->state & TOUCHPAD_STATE_TOUCH)
on_release(touchpad);
break;
case ABS_X:
if (touchpad->state & TOUCHPAD_STATE_TOUCH) {
touchpad->hw_abs.x = e->value;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_ANY;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_X;
}
break;
case ABS_Y:
if (touchpad->state & TOUCHPAD_STATE_TOUCH) {
touchpad->hw_abs.y = e->value;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_ANY;
touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_Y;
}
break;
}
}
void
Touch::run()
{
// Check if sampling should be initiated
if (!m_sampling) {
mode(INPUT_MODE);
m_sampling = true;
return;
}
// Sample the pin and discharge
uint8_t state = is_clear();
mode(OUTPUT_MODE);
clear();
m_sampling = false;
// Was the pin discharge during the sampling period
if (state) {
m_start = RTT::millis();
if (!m_touched) {
on_touch();
m_touched = true;
}
return;
}
// The pin was discharge; low-pass filter pin change
if (m_touched && (RTT::since(m_start) > THRESHOLD)) {
m_touched = false;
}
}
static inline void
process_key(struct touchpad_dispatch *touchpad,
struct evdev_device *device,
struct input_event *e,
uint32_t time)
{
uint32_t code;
switch (e->code) {
case BTN_TOUCH:
if (!touchpad->has_pressure) {
if (e->value && !(touchpad->state & TOUCHPAD_STATE_TOUCH))
on_touch(touchpad);
else if (!e->value)
on_release(touchpad);
}
break;
case BTN_LEFT:
case BTN_RIGHT:
case BTN_MIDDLE:
case BTN_SIDE:
case BTN_EXTRA:
case BTN_FORWARD:
case BTN_BACK:
case BTN_TASK:
if (!touchpad->fsm.enable && e->code == BTN_LEFT &&
touchpad->finger_state == TOUCHPAD_FINGERS_TWO)
code = BTN_RIGHT;
else
code = e->code;
pointer_notify_button(
&touchpad->device->base,
time,
code,
e->value ? LIBINPUT_POINTER_BUTTON_STATE_PRESSED :
LIBINPUT_POINTER_BUTTON_STATE_RELEASED);
break;
case BTN_TOOL_PEN:
case BTN_TOOL_RUBBER:
case BTN_TOOL_BRUSH:
case BTN_TOOL_PENCIL:
case BTN_TOOL_AIRBRUSH:
case BTN_TOOL_MOUSE:
case BTN_TOOL_LENS:
touchpad->reset = 1;
break;
case BTN_TOOL_FINGER:
if (e->value)
touchpad->finger_state |= TOUCHPAD_FINGERS_ONE;
else
touchpad->finger_state &= ~TOUCHPAD_FINGERS_ONE;
break;
case BTN_TOOL_DOUBLETAP:
if (e->value)
touchpad->finger_state |= TOUCHPAD_FINGERS_TWO;
else
touchpad->finger_state &= ~TOUCHPAD_FINGERS_TWO;
break;
case BTN_TOOL_TRIPLETAP:
if (e->value)
touchpad->finger_state |= TOUCHPAD_FINGERS_THREE;
else
touchpad->finger_state &= ~TOUCHPAD_FINGERS_THREE;
break;
}
}
