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Better touch input handling

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MULTidll 2025-11-27 18:41:48 +05:30 committed by MULTi
parent 0b3dd8e6fe
commit 1064590ba7
1 changed files with 40 additions and 9 deletions
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49
src/platforms/rcore_drm.c
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@ -2287,7 +2287,7 @@ static void PollMouseEvents(void)
// Update single touch position only if it's active and no MT events are being used
if (platform.touchActive[0]) {
platform.touchPosition[0].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
touchAction = 2; // TOUCH_ACTION_MOVE
if (touchAction == -1) touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2298,7 +2298,7 @@ static void PollMouseEvents(void)
// Update single touch position only if it's active and no MT events are being used
if (platform.touchActive[0]) {
platform.touchPosition[0].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
touchAction = 2; // TOUCH_ACTION_MOVE
if (touchAction == -1) touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2307,17 +2307,23 @@ static void PollMouseEvents(void)
if (event.code == ABS_MT_POSITION_X)
{
if (platform.touchSlot < MAX_TOUCH_POINTS && platform.touchActive[platform.touchSlot]) {
if (platform.touchSlot < MAX_TOUCH_POINTS) {
platform.touchPosition[platform.touchSlot].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
touchAction = 2; // TOUCH_ACTION_MOVE
// If this slot is active, it's a move. If not, we are just updating the buffer for when it becomes active.
// Only set to MOVE if we haven't already detected a DOWN or UP event this frame
if (platform.touchActive[platform.touchSlot] && touchAction == -1) touchAction = 2; // TOUCH_ACTION_MOVE
}
}
if (event.code == ABS_MT_POSITION_Y)
{
if (platform.touchSlot < MAX_TOUCH_POINTS && platform.touchActive[platform.touchSlot]) {
if (platform.touchSlot < MAX_TOUCH_POINTS) {
platform.touchPosition[platform.touchSlot].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
touchAction = 2; // TOUCH_ACTION_MOVE
// If this slot is active, it's a move. If not, we are just updating the buffer for when it becomes active.
// Only set to MOVE if we haven't already detected a DOWN or UP event this frame
if (platform.touchActive[platform.touchSlot] && touchAction == -1) touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2344,6 +2350,25 @@ static void PollMouseEvents(void)
}
}
// Handle ABS_MT_PRESSURE (0x3a) if available, as some devices use it for lift-off
#ifndef ABS_MT_PRESSURE
#define ABS_MT_PRESSURE 0x3a
#endif
if (event.code == ABS_MT_PRESSURE)
{
if (platform.touchSlot < MAX_TOUCH_POINTS)
{
if (event.value <= 0) // Pressure 0 means lift
{
platform.touchActive[platform.touchSlot] = false;
platform.touchPosition[platform.touchSlot].x = -1;
platform.touchPosition[platform.touchSlot].y = -1;
platform.touchId[platform.touchSlot] = -1;
touchAction = 0; // TOUCH_ACTION_UP
}
}
}
// Touchscreen tap
if (event.code == ABS_PRESSURE)
{
@ -2352,9 +2377,15 @@ static void PollMouseEvents(void)
if (!event.value && previousMouseLeftButtonState)
{
platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 0;
platform.touchActive[0] = false;
platform.touchPosition[0].x = -1;
platform.touchPosition[0].y = -1;
// Clear all touches if global pressure is 0 (safety net)
for (int i = 0; i < MAX_TOUCH_POINTS; i++)
{
platform.touchActive[i] = false;
platform.touchPosition[i].x = -1;
platform.touchPosition[i].y = -1;
platform.touchId[i] = -1;
}
touchAction = 0; // TOUCH_ACTION_UP
}