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improved multitouch support by tracking touch positions and IDs for each slot

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MULTidll 2025-11-23 16:11:50 +05:30 committed by MULTi
parent 137a9c488a
commit 0b3dd8e6fe
1 changed files with 36 additions and 44 deletions
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74
src/platforms/rcore_drm.c
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@ -138,6 +138,8 @@ typedef struct {
Rectangle absRange; // Range of values for absolute pointing devices (touchscreens)
int touchSlot; // Hold the touch slot number of the currently being sent multitouch block
bool touchActive[MAX_TOUCH_POINTS]; // Track which touch points are currently active
Vector2 touchPosition[MAX_TOUCH_POINTS]; // Track touch positions for each slot
int touchId[MAX_TOUCH_POINTS]; // Track touch IDs for each slot
// Gamepad data
int gamepadStreamFd[MAX_GAMEPADS]; // Gamepad device file descriptor
@ -261,7 +263,6 @@ static void ConfigureEvdevDevice(char *device); // Identifies a input device and
static void PollKeyboardEvents(void); // Process evdev keyboard events
static void PollGamepadEvents(void); // Process evdev gamepad events
static void PollMouseEvents(void); // Process evdev mouse events
static void CompactTouchPoints(void); // Compact touch points array after touch removal
static int FindMatchingConnectorMode(const drmModeConnector *connector, const drmModeModeInfo *mode); // Search matching DRM mode in connector's mode list
static int FindExactConnectorMode(const drmModeConnector *connector, uint width, uint height, uint fps, bool allowInterlaced); // Search exactly matching DRM connector mode in connector's list
@ -1883,6 +1884,9 @@ static void InitEvdevInput(void)
CORE.Input.Touch.position[i].x = -1;
CORE.Input.Touch.position[i].y = -1;
platform.touchActive[i] = false;
platform.touchPosition[i].x = -1;
platform.touchPosition[i].y = -1;
platform.touchId[i] = -1;
}
// Initialize touch slot
@ -2282,7 +2286,7 @@ static void PollMouseEvents(void)
// Update single touch position only if it's active and no MT events are being used
if (platform.touchActive[0]) {
CORE.Input.Touch.position[0].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
platform.touchPosition[0].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2293,7 +2297,7 @@ static void PollMouseEvents(void)
// Update single touch position only if it's active and no MT events are being used
if (platform.touchActive[0]) {
CORE.Input.Touch.position[0].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
platform.touchPosition[0].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2304,7 +2308,7 @@ static void PollMouseEvents(void)
if (event.code == ABS_MT_POSITION_X)
{
if (platform.touchSlot < MAX_TOUCH_POINTS && platform.touchActive[platform.touchSlot]) {
CORE.Input.Touch.position[platform.touchSlot].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
platform.touchPosition[platform.touchSlot].x = (event.value - platform.absRange.x)*CORE.Window.screen.width/platform.absRange.width;
touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2312,7 +2316,7 @@ static void PollMouseEvents(void)
if (event.code == ABS_MT_POSITION_Y)
{
if (platform.touchSlot < MAX_TOUCH_POINTS && platform.touchActive[platform.touchSlot]) {
CORE.Input.Touch.position[platform.touchSlot].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
platform.touchPosition[platform.touchSlot].y = (event.value - platform.absRange.y)*CORE.Window.screen.height/platform.absRange.height;
touchAction = 2; // TOUCH_ACTION_MOVE
}
}
@ -2325,14 +2329,16 @@ static void PollMouseEvents(void)
{
// Touch has started for this point
platform.touchActive[platform.touchSlot] = true;
platform.touchId[platform.touchSlot] = event.value;
touchAction = 1; // TOUCH_ACTION_DOWN
}
else
{
// Touch has ended for this point
platform.touchActive[platform.touchSlot] = false;
CORE.Input.Touch.position[platform.touchSlot].x = -1;
CORE.Input.Touch.position[platform.touchSlot].y = -1;
platform.touchPosition[platform.touchSlot].x = -1;
platform.touchPosition[platform.touchSlot].y = -1;
platform.touchId[platform.touchSlot] = -1;
touchAction = 0; // TOUCH_ACTION_UP
}
}
@ -2347,8 +2353,8 @@ static void PollMouseEvents(void)
{
platform.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 0;
platform.touchActive[0] = false;
CORE.Input.Touch.position[0].x = -1;
CORE.Input.Touch.position[0].y = -1;
platform.touchPosition[0].x = -1;
platform.touchPosition[0].y = -1;
touchAction = 0; // TOUCH_ACTION_UP
}
@ -2382,15 +2388,16 @@ static void PollMouseEvents(void)
for (int i = 0; i < MAX_TOUCH_POINTS; i++)
{
platform.touchActive[i] = false;
CORE.Input.Touch.position[i].x = -1;
CORE.Input.Touch.position[i].y = -1;
platform.touchPosition[i].x = -1;
platform.touchPosition[i].y = -1;
platform.touchId[i] = -1;
}
}
else
{
platform.touchActive[0] = false;
CORE.Input.Touch.position[0].x = -1;
CORE.Input.Touch.position[0].y = -1;
platform.touchPosition[0].x = -1;
platform.touchPosition[0].y = -1;
}
touchAction = 0; // TOUCH_ACTION_UP
}
@ -2414,26 +2421,25 @@ static void PollMouseEvents(void)
if (CORE.Input.Mouse.currentPosition.y > CORE.Window.screen.height/CORE.Input.Mouse.scale.y) CORE.Input.Mouse.currentPosition.y = CORE.Window.screen.height/CORE.Input.Mouse.scale.y;
}
// Clean up any invalid touch points
CompactTouchPoints();
// Update touch point count
CORE.Input.Touch.pointCount = 0;
// Repack active touches into CORE.Input.Touch
int k = 0;
for (int i = 0; i < MAX_TOUCH_POINTS; i++)
{
if (platform.touchActive[i]) CORE.Input.Touch.pointCount++;
if (platform.touchActive[i])
{
CORE.Input.Touch.position[k] = platform.touchPosition[i];
CORE.Input.Touch.pointId[k] = platform.touchId[i];
k++;
}
}
CORE.Input.Touch.pointCount = k;
// if no touches are active but positions exist, clean it up
if (CORE.Input.Touch.pointCount == 0) {
for (int i = 0; i < MAX_TOUCH_POINTS; i++) {
if (platform.touchActive[i] || CORE.Input.Touch.position[i].x != -1) {
TRACELOG(LOG_DEBUG, "TOUCH: Force cleaning ghost touch at slot %d", i);
platform.touchActive[i] = false;
// Clear remaining slots
for (int i = k; i < MAX_TOUCH_POINTS; i++)
{
CORE.Input.Touch.position[i].x = -1;
CORE.Input.Touch.position[i].y = -1;
}
}
CORE.Input.Touch.pointId[i] = -1;
}
// Debug logging
@ -2465,20 +2471,6 @@ static void PollMouseEvents(void)
}
}
// Clean up inactive touch points to prevent ghost touches
static void CompactTouchPoints(void)
{
for (int i = 0; i < MAX_TOUCH_POINTS; i++)
{
if (!platform.touchActive[i])
{
CORE.Input.Touch.position[i].x = -1;
CORE.Input.Touch.position[i].y = -1;
}
}
}
// Search matching DRM mode in connector's mode list
static int FindMatchingConnectorMode(const drmModeConnector *connector, const drmModeModeInfo *mode)
{