Implemented scrolling factor for smooth trackpad scrolling

Working platforms platform: OSX, Windows.
Support for almost all ui elements, including project list.

2 files changed, 30 insertions, 39 deletions

diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index c6c2e6dab1..7a914a88fb 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -788,6 +788,22 @@ static int translateKey(unsigned int key) {
 */
 }
 
+inline void sendScrollEvent(int button, double factor) {
+	InputEvent ev;
+	ev.type = InputEvent::MOUSE_BUTTON;
+	ev.mouse_button.button_index = button;
+	ev.mouse_button.factor = factor;
+	ev.mouse_button.pressed = true;
+	ev.mouse_button.x = mouse_x;
+	ev.mouse_button.y = mouse_y;
+	ev.mouse_button.global_x = mouse_x;
+	ev.mouse_button.global_y = mouse_y;
+	ev.mouse_button.button_mask = button_mask;
+	OS_OSX::singleton->push_input(ev);
+	ev.mouse_button.pressed = false;
+	OS_OSX::singleton->push_input(ev);
+}
+
 - (void)scrollWheel:(NSEvent *)event {
 	double deltaX, deltaY;
 
@@ -797,48 +813,21 @@ static int translateKey(unsigned int key) {
 		deltaY = [event scrollingDeltaY];
 
 		if ([event hasPreciseScrollingDeltas]) {
-			deltaX *= 0.1;
-			deltaY *= 0.1;
+			deltaX *= 0.03;
+			deltaY *= 0.03;
 		}
-	} else {
+	} else
+#endif // MAC_OS_X_VERSION_MAX_ALLOWED
+	{
 		deltaX = [event deltaX];
 		deltaY = [event deltaY];
 	}
-#else
-	deltaX = [event deltaX];
-	deltaY = [event deltaY];
-#endif /*MAC_OS_X_VERSION_MAX_ALLOWED*/
-
-	if (fabs(deltaY)) {
-
-		InputEvent ev;
-		ev.type = InputEvent::MOUSE_BUTTON;
-		ev.mouse_button.button_index = deltaY > 0 ? BUTTON_WHEEL_UP : BUTTON_WHEEL_DOWN;
-		ev.mouse_button.pressed = true;
-		ev.mouse_button.x = mouse_x;
-		ev.mouse_button.y = mouse_y;
-		ev.mouse_button.global_x = mouse_x;
-		ev.mouse_button.global_y = mouse_y;
-		ev.mouse_button.button_mask = button_mask;
-		OS_OSX::singleton->push_input(ev);
-		ev.mouse_button.pressed = false;
-		OS_OSX::singleton->push_input(ev);
-	}
 
 	if (fabs(deltaX)) {
-
-		InputEvent ev;
-		ev.type = InputEvent::MOUSE_BUTTON;
-		ev.mouse_button.button_index = deltaX < 0 ? BUTTON_WHEEL_RIGHT : BUTTON_WHEEL_LEFT;
-		ev.mouse_button.pressed = true;
-		ev.mouse_button.x = mouse_x;
-		ev.mouse_button.y = mouse_y;
-		ev.mouse_button.global_x = mouse_x;
-		ev.mouse_button.global_y = mouse_y;
-		ev.mouse_button.button_mask = button_mask;
-		OS_OSX::singleton->push_input(ev);
-		ev.mouse_button.pressed = false;
-		OS_OSX::singleton->push_input(ev);
+		sendScrollEvent(0 > deltaX ? BUTTON_WHEEL_RIGHT : BUTTON_WHEEL_LEFT, fabs(deltaX * 0.3));
+	}
+	if (fabs(deltaY)) {
+		sendScrollEvent(0 < deltaY ? BUTTON_WHEEL_UP : BUTTON_WHEEL_DOWN, fabs(deltaY * 0.3));
 	}
 }
 
@@ -1630,7 +1619,6 @@ void OS_OSX::process_events() {
 void OS_OSX::push_input(const InputEvent &p_event) {
 
 	InputEvent ev = p_event;
-	//print_line("EV: "+String(ev));
 	input->parse_input_event(ev);
 }
 
diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
index 99b6890913..9dee2da21e 100644
--- a/platform/windows/os_windows.cpp
+++ b/platform/windows/os_windows.cpp
@@ -509,10 +509,13 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 						if (!motion)
 							return 0;
 
-						if (motion < 0)
+						if (motion < 0) {
 							mb.button_index = BUTTON_WHEEL_LEFT;
-						else
+							mb.factor = fabs((double)motion / (double)WHEEL_DELTA);
+						} else {
 							mb.button_index = BUTTON_WHEEL_RIGHT;
+							mb.factor = fabs((double)motion / (double)WHEEL_DELTA);
+						}
 					} break;
 					/*
 				case WM_XBUTTONDOWN: {