Start on bundling touch points to only perform one callback per touch event.

include/GLFW/glfw3.h

@@ -1105,6 +1105,32 @@ typedef void (* GLFWdropfun)(GLFWwindow*,int,const char**);
  */
 typedef void (* GLFWtouchfun)(GLFWwindow*, int, int, double, double);
 
+/*! @brief Touch point info.
+*
+*  This describes the touch point info.
+*
+*  @sa @ref touch
+*
+*  @since Added in version 3.2.1 (touch branch)
+*
+*  @ingroup touch
+*/
+typedef struct GLFWtouch
+{
+	/*! Touch id
+	*/
+	int id;
+	/*! Touch action
+	*/
+	int action;
+	/*! X position
+	*/
+	double x;
+	/*! Y position
+	*/
+	double y;
+} GLFWtouch;
+
 /*! @brief The function signature for monitor configuration callbacks.
  *
  *  This is the function signature for monitor configuration callback functions.

src/input.c

@@ -135,11 +135,12 @@ void _glfwInputDrop(_GLFWwindow* window, int count, const char** paths)
         window->callbacks.drop((GLFWwindow*) window, count, paths);
 }
 
-void _glfwInputTouch(_GLFWwindow* window, int touch, int action, double xpos, double ypos)
+void _glfwInputTouch(_GLFWwindow* window, int id, int action, double xpos, double ypos)
 {
 	if (window->callbacks.touch)
-        window->callbacks.touch((GLFWwindow*) window, touch, action, xpos, ypos);
+		window->callbacks.touch((GLFWwindow*)window, id, action, xpos, ypos);
 }
+
 void _glfwInputJoystickChange(int joy, int event)
 {
     if (_glfw.callbacks.joystick)
@@ -621,6 +622,7 @@ GLFWAPI GLFWtouchfun glfwSetTouchCallback(GLFWwindow* handle, GLFWtouchfun cbfun
     _GLFWwindow* window = (_GLFWwindow*) handle;
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
     _GLFW_SWAP_POINTERS(window->callbacks.touch, cbfun);
+	setTouchInput(window, 1);
     return cbfun;
 }
 

src/internal.h

@@ -927,13 +927,13 @@ void _glfwInputCursorEnter(_GLFWwindow* window, GLFWbool entered);
 
 /*! @brief Notifies shared code of a touch start/end event.
 *  @param[in] window The window that received the event.
- *  @param[in] touch The touch that started or ended.
+*  @param[in] id Touch point id
 *  @param[in] action One of @c GLFW_PRESS, @c GLFW_MOVE or @c GLFW_RELEASE.
 *  @param[in] xpos The new x-coordinate of the touch.
 *  @param[in] ypos The new y-coordinate of the touch.
 *  @ingroup event
 */
-void _glfwInputTouch(_GLFWwindow* window, int touch, int action, double xpos, double ypos);
+void _glfwInputTouch(_GLFWwindow* window, int id, int action, double xpos, double ypos);
 
 /*! @ingroup event
  */

src/win32_window.c

@@ -837,6 +837,12 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
                 _glfwPlatformGetWindowSize(window, &width, &height);
                 _glfwPlatformGetWindowPos(window, &xpos, &ypos);
 
+				//Create storage
+				GLFWtouch* touchPoints = calloc(count, sizeof(GLFWtouch));
+
+				//Count valid points
+				int valid_count = 0;
+
                 for (i = 0;  i < count;  i++)
                 {
                     int action;
@@ -856,16 +862,28 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
                         action = GLFW_PRESS;
                     else if (inputs[i].dwFlags & TOUCHEVENTF_UP)
                         action = GLFW_RELEASE;
-                    else
+					else if (inputs[i].dwFlags & TOUCHEVENTF_MOVE)
 						action = GLFW_MOVE;
+					else
+						action = GLFW_REPEAT;
+
+					touchPoints[valid_count].id = (int)inputs[i].dwID;
+					touchPoints[valid_count].action = action;
+					touchPoints[valid_count].x = inputs[i].x / 100.0 - xpos;
+					touchPoints[valid_count].y = inputs[i].y / 100.0 - ypos;
+
+					valid_count++;
 
                     _glfwInputTouch(window,
-                                    (int) inputs[i].dwID, action,
+                                    (int) inputs[i].dwID, 
+									action,
                                     inputs[i].x / 100.0 - xpos,
                                     inputs[i].y / 100.0 - ypos);
                 }
 
                 _glfw_CloseTouchInputHandle((HTOUCHINPUT) lParam);
+
+				free(touchPoints);
             }
 
             free(inputs);

tests/events.c

@@ -486,12 +486,12 @@ static void joystick_callback(int joy, int event)
     }
 }
 
-static void touch_callback(GLFWwindow* window, int touch, int action, double x, double y)
+static void touch_callback(GLFWwindow* window, int id, int action, double x, double y)
 {
     printf("%08x at %0.3f: Touch %i %s at position %0.3f %0.3f\n",
            counter++,
            glfwGetTime(),
-           touch,
+           id,
            get_action_name(action),
            x, y);
 }