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REVIEWED: Touch input system #1975 #1960

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- ADDED: `GetTouchPointCount()` to core module, removed from gestures module.
 - Support multiple touch points: `MAX_TOUCH_POINTS`.
This commit is contained in:
Ray 2021-09-10 15:19:12 +02:00
parent 2c13e43c32
commit 803094f41f
4 changed files with 91 additions and 135 deletions
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2
src/config.h
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@ -73,7 +73,7 @@
#define MAX_GAMEPADS 4 // Max number of gamepads supported
#define MAX_GAMEPAD_AXIS 8 // Max number of axis supported (per gamepad)
#define MAX_GAMEPAD_BUTTONS 32 // Max bumber of buttons supported (per gamepad)
#define MAX_TOUCH_POINTS 10 // Maximum number of touch points supported
#define MAX_TOUCH_POINTS 8 // Maximum number of touch points supported
#define MAX_KEY_PRESSED_QUEUE 16 // Max number of characters in the key input queue
#define STORAGE_DATA_FILE "storage.data" // Automatic storage filename

201
src/core.c
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@ -298,7 +298,7 @@
#define MAX_GAMEPAD_BUTTONS 32 // Maximum number of buttons supported (per gamepad)
#endif
#ifndef MAX_TOUCH_POINTS
#define MAX_TOUCH_POINTS 10 // Maximum number of touch points supported
#define MAX_TOUCH_POINTS 8 // Maximum number of touch points supported
#endif
#ifndef MAX_KEY_PRESSED_QUEUE
#define MAX_KEY_PRESSED_QUEUE 16 // Maximum number of keys in the key input queue
@ -443,6 +443,8 @@ typedef struct CoreData {
#endif
} Mouse;
struct {
int pointCount; // Number of touch points active
int pointId[MAX_TOUCH_POINTS]; // Point identifiers
Vector2 position[MAX_TOUCH_POINTS]; // Touch position on screen
char currentTouchState[MAX_TOUCH_POINTS]; // Registers current touch state
char previousTouchState[MAX_TOUCH_POINTS]; // Registers previous touch state
@ -3564,6 +3566,12 @@ Vector2 GetTouchPosition(int index)
return position;
}
// Get number of touch points
int GetTouchPointCount(void)
{
return CORE.Input.Touch.pointCount;
}
//----------------------------------------------------------------------------------
// Module specific Functions Definition
//----------------------------------------------------------------------------------
@ -4997,7 +5005,7 @@ static void MouseButtonCallback(GLFWwindow *window, int button, int action, int
// but future releases may add more actions (i.e. GLFW_REPEAT)
CORE.Input.Mouse.currentButtonState[button] = action;
#if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES)
#if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES) // PLATFORM_DESKTOP
// Process mouse events as touches to be able to use mouse-gestures
GestureEvent gestureEvent = { 0 };
@ -5008,7 +5016,7 @@ static void MouseButtonCallback(GLFWwindow *window, int button, int action, int
// NOTE: TOUCH_MOVE event is registered in MouseCursorPosCallback()
// Assign a pointer ID
gestureEvent.pointerId[0] = 0;
gestureEvent.pointId[0] = 0;
// Register touch points count
gestureEvent.pointCount = 1;
@ -5032,14 +5040,14 @@ static void MouseCursorPosCallback(GLFWwindow *window, double x, double y)
CORE.Input.Mouse.currentPosition.y = (float)y;
CORE.Input.Touch.position[0] = CORE.Input.Mouse.currentPosition;
#if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES)
#if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES) // PLATFORM_DESKTOP
// Process mouse events as touches to be able to use mouse-gestures
GestureEvent gestureEvent = { 0 };
gestureEvent.touchAction = TOUCH_MOVE;
// Assign a pointer ID
gestureEvent.pointerId[0] = 0;
gestureEvent.pointId[0] = 0;
// Register touch points count
gestureEvent.pointCount = 1;
@ -5271,64 +5279,47 @@ static int32_t AndroidInputCallback(struct android_app *app, AInputEvent *event)
return 0;
}
CORE.Input.Touch.position[0].x = AMotionEvent_getX(event, 0);
CORE.Input.Touch.position[0].y = AMotionEvent_getY(event, 0);
unsigned int touchCount = AMotionEvent_getPointerCount(event);
for (int i = 1; i < touchCount && i < MAX_TOUCH_POINTS; i++)
// Register touch points count
CORE.Input.Touch.pointCount = AMotionEvent_getPointerCount(event);
for (int i = 0; (i < CORE.Input.Touch.pointCount) && (i < MAX_TOUCH_POINTS); i++)
{
CORE.Input.Touch.position[i].x = AMotionEvent_getX(event, i);
CORE.Input.Touch.position[i].y = AMotionEvent_getY(event, i);
// Register touch points id
CORE.Input.Touch.pointId[i] = AMotionEvent_getPointerId(event, i);
// Register touch points position
CORE.Input.Touch.position[i] = (Vector2){ AMotionEvent_getX(event, i), AMotionEvent_getY(event, i) };
// Normalize gestureEvent.position[x] for screenWidth and screenHeight
gestureEvent.position[i].x /= (float)GetScreenWidth();
gestureEvent.position[i].y /= (float)GetScreenHeight();
}
int32_t action = AMotionEvent_getAction(event);
unsigned int flags = action & AMOTION_EVENT_ACTION_MASK;
if (flags == AMOTION_EVENT_ACTION_DOWN || flags == AMOTION_EVENT_ACTION_MOVE)
{
CORE.Input.Touch.currentTouchState[MOUSE_BUTTON_LEFT] = 1;
}
else if (flags == AMOTION_EVENT_ACTION_UP)
{
CORE.Input.Touch.currentTouchState[MOUSE_BUTTON_LEFT] = 0;
}
if (flags == AMOTION_EVENT_ACTION_DOWN || flags == AMOTION_EVENT_ACTION_MOVE) CORE.Input.Touch.currentTouchState[MOUSE_BUTTON_LEFT] = 1;
else if (flags == AMOTION_EVENT_ACTION_UP) CORE.Input.Touch.currentTouchState[MOUSE_BUTTON_LEFT] = 0;
#if defined(SUPPORT_GESTURES_SYSTEM)
#if defined(SUPPORT_GESTURES_SYSTEM) // PLATFORM_ANDROID
GestureEvent gestureEvent = { 0 };
gestureEvent.pointCount = CORE.Input.Touch.pointCount;
// Register touch actions
if (flags == AMOTION_EVENT_ACTION_DOWN) gestureEvent.touchAction = TOUCH_DOWN;
else if (flags == AMOTION_EVENT_ACTION_UP) gestureEvent.touchAction = TOUCH_UP;
else if (flags == AMOTION_EVENT_ACTION_MOVE) gestureEvent.touchAction = TOUCH_MOVE;
// Register touch points count
// NOTE: Documentation says pointerCount is Always >= 1,
// but in practice it can be 0 or over a million
gestureEvent.pointCount = AMotionEvent_getPointerCount(event);
// Only enable gestures for 1-3 touch points
if ((gestureEvent.pointCount > 0) && (gestureEvent.pointCount < 4))
for (int i = 0; (i < gestureEvent.pointCount) && (i < MAX_TOUCH_POINTS); i++)
{
// Register touch points id
// NOTE: Only two points registered
gestureEvent.pointerId[0] = AMotionEvent_getPointerId(event, 0);
gestureEvent.pointerId[1] = AMotionEvent_getPointerId(event, 1);
// Register touch points position
gestureEvent.position[0] = (Vector2){ AMotionEvent_getX(event, 0), AMotionEvent_getY(event, 0) };
gestureEvent.position[1] = (Vector2){ AMotionEvent_getX(event, 1), AMotionEvent_getY(event, 1) };
// Normalize gestureEvent.position[x] for screenWidth and screenHeight
gestureEvent.position[0].x /= (float)GetScreenWidth();
gestureEvent.position[0].y /= (float)GetScreenHeight();
gestureEvent.position[1].x /= (float)GetScreenWidth();
gestureEvent.position[1].y /= (float)GetScreenHeight();
// Gesture data is sent to gestures system for processing
ProcessGestureEvent(gestureEvent);
gestureEvent.pointId[i] = CORE.Input.Touch.pointId[i];
gestureEvent.position[i] = CORE.Input.Touch.position[i];
}
// Gesture data is sent to gestures system for processing
ProcessGestureEvent(gestureEvent);
#endif
return 0;
@ -5346,64 +5337,50 @@ static EM_BOOL EmscriptenMouseCallback(int eventType, const EmscriptenMouseEvent
// Register touch input events
static EM_BOOL EmscriptenTouchCallback(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
{
for (int i = 0; i < touchEvent->numTouches; i++)
// Register touch points count
CORE.Input.Touch.pointCount = touchEvent->numTouches;
double canvasWidth = 0.0;
double canvasHeight = 0.0;
// NOTE: emscripten_get_canvas_element_size() returns canvas.width and canvas.height but
// we are looking for actual CSS size: canvas.style.width and canvas.style.height
//EMSCRIPTEN_RESULT res = emscripten_get_canvas_element_size("#canvas", &canvasWidth, &canvasHeight);
emscripten_get_element_css_size("#canvas", &canvasWidth, &canvasHeight);
for (int i = 0; (i < CORE.Input.Touch.pointCount) && (i < MAX_TOUCH_POINTS); i++)
{
// Register touch points id
CORE.Input.Touch.pointId[i] = touchEvent->touches[i].identifier;
// Register touch points position
CORE.Input.Touch.position[i] = (Vector2){ touchEvent->touches[i].targetX, touchEvent->touches[i].targetY };
// Normalize gestureEvent.position[x] for CORE.Window.screen.width and CORE.Window.screen.height
CORE.Input.Touch.position[i].x *= ((float)GetScreenWidth()/(float)canvasWidth);
CORE.Input.Touch.position[i].y *= ((float)GetScreenHeight()/(float)canvasHeight);
if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) CORE.Input.Touch.currentTouchState[i] = 1;
else if (eventType == EMSCRIPTEN_EVENT_TOUCHEND) CORE.Input.Touch.currentTouchState[i] = 0;
}
#if defined(SUPPORT_GESTURES_SYSTEM)
#if defined(SUPPORT_GESTURES_SYSTEM) // PLATFORM_WEB
GestureEvent gestureEvent = { 0 };
gestureEvent.pointCount = CORE.Input.Touch.pointCount;
// Register touch actions
if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) gestureEvent.touchAction = TOUCH_DOWN;
else if (eventType == EMSCRIPTEN_EVENT_TOUCHEND) gestureEvent.touchAction = TOUCH_UP;
else if (eventType == EMSCRIPTEN_EVENT_TOUCHMOVE) gestureEvent.touchAction = TOUCH_MOVE;
// Register touch points count
gestureEvent.pointCount = touchEvent->numTouches;
// Register touch points id
gestureEvent.pointerId[0] = touchEvent->touches[0].identifier;
gestureEvent.pointerId[1] = touchEvent->touches[1].identifier;
// Register touch points position
// NOTE: Only two points registered
gestureEvent.position[0] = (Vector2){ touchEvent->touches[0].targetX, touchEvent->touches[0].targetY };
gestureEvent.position[1] = (Vector2){ touchEvent->touches[1].targetX, touchEvent->touches[1].targetY };
double canvasWidth, canvasHeight;
// NOTE: emscripten_get_canvas_element_size() returns canvas.width and canvas.height but
// we are looking for actual CSS size: canvas.style.width and canvas.style.height
//EMSCRIPTEN_RESULT res = emscripten_get_canvas_element_size("#canvas", &canvasWidth, &canvasHeight);
emscripten_get_element_css_size("#canvas", &canvasWidth, &canvasHeight);
// Normalize gestureEvent.position[x] for CORE.Window.screen.width and CORE.Window.screen.height
gestureEvent.position[0].x *= ((float)GetScreenWidth()/(float)canvasWidth);
gestureEvent.position[0].y *= ((float)GetScreenHeight()/(float)canvasHeight);
gestureEvent.position[1].x *= ((float)GetScreenWidth()/(float)canvasWidth);
gestureEvent.position[1].y *= ((float)GetScreenHeight()/(float)canvasHeight);
CORE.Input.Touch.position[0] = gestureEvent.position[0];
CORE.Input.Touch.position[1] = gestureEvent.position[1];
for (int i = 0; (i < gestureEvent.pointCount) && (i < MAX_TOUCH_POINTS); i++)
{
gestureEvent.pointId[i] = CORE.Input.Touch.pointId[i];
gestureEvent.position[i] = CORE.Input.Touch.position[i];
}
// Gesture data is sent to gestures system for processing
ProcessGestureEvent(gestureEvent);
#else
// Support only simple touch position
if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART)
{
// Get first touch position
CORE.Input.Touch.position[0] = (Vector2){ touchEvent->touches[0].targetX, touchEvent->touches[0].targetY };
double canvasWidth, canvasHeight;
//EMSCRIPTEN_RESULT res = emscripten_get_canvas_element_size("#canvas", &canvasWidth, &canvasHeight);
emscripten_get_element_css_size("#canvas", &canvasWidth, &canvasHeight);
// Normalize gestureEvent.position[x] for screenWidth and screenHeight
CORE.Input.Touch.position[0].x *= ((float)GetScreenWidth()/(float)canvasWidth);
CORE.Input.Touch.position[0].y *= ((float)GetScreenHeight()/(float)canvasHeight);
}
#endif
return 1;
@ -5923,8 +5900,8 @@ static void *EventThread(void *arg)
struct input_event event = { 0 };
InputEventWorker *worker = (InputEventWorker *)arg;
int touchAction = -1;
bool gestureUpdate = false;
int touchAction = -1; // 0-TOUCH_UP, 1-TOUCH_DOWN, 2-TOUCH_MOVE
bool gestureUpdate = false; // Flag to note gestures require to update
while (!CORE.Window.shouldClose)
{
@ -5939,10 +5916,8 @@ static void *EventThread(void *arg)
CORE.Input.Mouse.currentPosition.x += event.value;
CORE.Input.Touch.position[0].x = CORE.Input.Mouse.currentPosition.x;
#if defined(SUPPORT_GESTURES_SYSTEM)
touchAction = TOUCH_MOVE;
touchAction = 2; // TOUCH_MOVE
gestureUpdate = true;
#endif
}
if (event.code == REL_Y)
@ -5950,10 +5925,8 @@ static void *EventThread(void *arg)
CORE.Input.Mouse.currentPosition.y += event.value;
CORE.Input.Touch.position[0].y = CORE.Input.Mouse.currentPosition.y;
#if defined(SUPPORT_GESTURES_SYSTEM)
touchAction = TOUCH_MOVE;
touchAction = 2; // TOUCH_MOVE
gestureUpdate = true;
#endif
}
if (event.code == REL_WHEEL) CORE.Input.Mouse.currentWheelMove += event.value;
@ -5968,10 +5941,8 @@ static void *EventThread(void *arg)
CORE.Input.Mouse.currentPosition.x = (event.value - worker->absRange.x)*CORE.Window.screen.width/worker->absRange.width; // Scale acording to absRange
CORE.Input.Touch.position[0].x = (event.value - worker->absRange.x)*CORE.Window.screen.width/worker->absRange.width; // Scale acording to absRange
#if defined(SUPPORT_GESTURES_SYSTEM)
touchAction = TOUCH_MOVE;
touchAction = 2; // TOUCH_MOVE
gestureUpdate = true;
#endif
}
if (event.code == ABS_Y)
@ -5979,10 +5950,8 @@ static void *EventThread(void *arg)
CORE.Input.Mouse.currentPosition.y = (event.value - worker->absRange.y)*CORE.Window.screen.height/worker->absRange.height; // Scale acording to absRange
CORE.Input.Touch.position[0].y = (event.value - worker->absRange.y)*CORE.Window.screen.height/worker->absRange.height; // Scale acording to absRange
#if defined(SUPPORT_GESTURES_SYSTEM)
touchAction = TOUCH_MOVE;
touchAction = 2; // TOUCH_MOVE
gestureUpdate = true;
#endif
}
// Multitouch movement
@ -6017,20 +5986,16 @@ static void *EventThread(void *arg)
{
CORE.Input.Mouse.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 0;
#if defined(SUPPORT_GESTURES_SYSTEM)
touchAction = TOUCH_UP;
touchAction = 0; // TOUCH_UP
gestureUpdate = true;
#endif
}
if (event.value && !previousMouseLeftButtonState)
{
CORE.Input.Mouse.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = 1;
#if defined(SUPPORT_GESTURES_SYSTEM)
touchAction = TOUCH_DOWN;
touchAction = 1; // TOUCH_DOWN
gestureUpdate = true;
#endif
}
}
@ -6044,11 +6009,9 @@ static void *EventThread(void *arg)
{
CORE.Input.Mouse.currentButtonStateEvdev[MOUSE_BUTTON_LEFT] = event.value;
#if defined(SUPPORT_GESTURES_SYSTEM)
if (event.value > 0) touchAction = TOUCH_DOWN;
else touchAction = TOUCH_UP;
if (event.value > 0) touchAction = 1; // TOUCH_DOWN
else touchAction = 0; // TOUCH_UP
gestureUpdate = true;
#endif
}
if (event.code == BTN_RIGHT) CORE.Input.Mouse.currentButtonStateEvdev[MOUSE_BUTTON_RIGHT] = event.value;
@ -6069,7 +6032,7 @@ static void *EventThread(void *arg)
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;
}
#if defined(SUPPORT_GESTURES_SYSTEM)
#if defined(SUPPORT_GESTURES_SYSTEM) // PLATFORM_RPI, PLATFORM_DRM
if (gestureUpdate)
{
GestureEvent gestureEvent = { 0 };
@ -6082,10 +6045,10 @@ static void *EventThread(void *arg)
if (CORE.Input.Touch.position[2].x >= 0) gestureEvent.pointCount++;
if (CORE.Input.Touch.position[3].x >= 0) gestureEvent.pointCount++;
gestureEvent.pointerId[0] = 0;
gestureEvent.pointerId[1] = 1;
gestureEvent.pointerId[2] = 2;
gestureEvent.pointerId[3] = 3;
gestureEvent.pointId[0] = 0;
gestureEvent.pointId[1] = 1;
gestureEvent.pointId[2] = 2;
gestureEvent.pointId[3] = 3;
gestureEvent.position[0] = CORE.Input.Touch.position[0];
gestureEvent.position[1] = CORE.Input.Touch.position[1];

21
src/gestures.h
View File

@ -53,7 +53,9 @@
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
//...
#ifndef MAX_TOUCH_POINTS
#define MAX_TOUCH_POINTS 8 // Maximum number of touch points supported
#endif
//----------------------------------------------------------------------------------
// Types and Structures Definition
@ -91,12 +93,11 @@
typedef enum { TOUCH_UP, TOUCH_DOWN, TOUCH_MOVE } TouchAction;
// Gesture event
// NOTE: MAX_TOUCH_POINTS fixed to 4
typedef struct {
int touchAction;
int pointCount;
int pointerId[4];
Vector2 position[4];
int pointId[MAX_TOUCH_POINTS];
Vector2 position[MAX_TOUCH_POINTS];
} GestureEvent;
//----------------------------------------------------------------------------------
@ -282,7 +283,7 @@ void ProcessGestureEvent(GestureEvent event)
GESTURES.Touch.upPosition = GESTURES.Touch.downPositionA;
GESTURES.Touch.eventTime = GetCurrentTime();
GESTURES.Touch.firstId = event.pointerId[0];
GESTURES.Touch.firstId = event.pointId[0];
GESTURES.Drag.vector = (Vector2){ 0.0f, 0.0f };
}
@ -297,7 +298,7 @@ void ProcessGestureEvent(GestureEvent event)
GESTURES.Swipe.start = false;
// Detect GESTURE_SWIPE
if ((GESTURES.Drag.intensity > FORCE_TO_SWIPE) && (GESTURES.Touch.firstId == event.pointerId[0]))
if ((GESTURES.Drag.intensity > FORCE_TO_SWIPE) && (GESTURES.Touch.firstId == event.pointId[0]))
{
// NOTE: Angle should be inverted in Y
GESTURES.Drag.angle = 360.0f - Vector2Angle(GESTURES.Touch.downPositionA, GESTURES.Touch.upPosition);
@ -430,14 +431,6 @@ void UpdateGestures(void)
}
}
// Get number of touch points
int GetTouchPointCount(void)
{
// NOTE: point count is calculated when ProcessGestureEvent(GestureEvent event) is called
return GESTURES.Touch.pointCount;
}
// Get latest detected gesture
int GetGestureDetected(void)
{

2
src/raylib.h
View File

@ -1104,6 +1104,7 @@ RLAPI void SetMouseCursor(int cursor); // Set mouse curso
RLAPI int GetTouchX(void); // Get touch position X for touch point 0 (relative to screen size)
RLAPI int GetTouchY(void); // Get touch position Y for touch point 0 (relative to screen size)
RLAPI Vector2 GetTouchPosition(int index); // Get touch position XY for a touch point index (relative to screen size)
RLAPI int GetTouchPointCount(void); // Get number of touch points
//------------------------------------------------------------------------------------
// Gestures and Touch Handling Functions (Module: gestures)
@ -1111,7 +1112,6 @@ RLAPI Vector2 GetTouchPosition(int index); // Get touch posit
RLAPI void SetGesturesEnabled(unsigned int flags); // Enable a set of gestures using flags
RLAPI bool IsGestureDetected(int gesture); // Check if a gesture have been detected
RLAPI int GetGestureDetected(void); // Get latest detected gesture
RLAPI int GetTouchPointCount(void); // Get touch points count
RLAPI float GetGestureHoldDuration(void); // Get gesture hold time in milliseconds
RLAPI Vector2 GetGestureDragVector(void); // Get gesture drag vector
RLAPI float GetGestureDragAngle(void); // Get gesture drag angle