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Add multitouch detection to PollMouseEvents for improved touch handling

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MULTidll 2025-12-01 18:48:59 +05:30
parent 6bdfb1d931
commit acc527031d
1 changed files with 8 additions and 3 deletions
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11
src/platforms/rcore_drm.c
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@ -2287,6 +2287,7 @@ static void PollMouseEvents(void)
struct input_event event = { 0 };
int touchAction = -1; // 0-TOUCH_ACTION_UP, 1-TOUCH_ACTION_DOWN, 2-TOUCH_ACTION_MOVE
static bool isMultitouch = false; // Detect if device supports MT events
// Try to read data from the mouse/touch/gesture and only continue if successful
while (read(fd, &event, sizeof(event)) == (int)sizeof(event))
@ -2334,7 +2335,7 @@ static void PollMouseEvents(void)
CORE.Input.Mouse.currentPosition.x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width; // Scale according to absRange
// Update single touch position only if it's active and no MT events are being used
if (platform.touchActive[0]) {
if (platform.touchActive[0] && !isMultitouch) {
platform.touchPosition[0].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
if (touchAction == -1) touchAction = 2; // TOUCH_ACTION_MOVE
}
@ -2345,17 +2346,21 @@ static void PollMouseEvents(void)
CORE.Input.Mouse.currentPosition.y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height; // Scale according to absRange
// Update single touch position only if it's active and no MT events are being used
if (platform.touchActive[0]) {
if (platform.touchActive[0] && !isMultitouch) {
platform.touchPosition[0].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
if (touchAction == -1) touchAction = 2; // TOUCH_ACTION_MOVE
}
}
// Multitouch movement
if (event.code == ABS_MT_SLOT) platform.touchSlot = event.value; // Remember the slot number for the folowing events
if (event.code == ABS_MT_SLOT) {
platform.touchSlot = event.value;
isMultitouch = true;
}
if (event.code == ABS_MT_POSITION_X)
{
isMultitouch = true;
if (platform.touchSlot < MAX_TOUCH_POINTS) {
platform.touchPosition[platform.touchSlot].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;