Fixed button mask behavior

platform/javascript/os_javascript.cpp

@@ -461,7 +461,6 @@ EM_BOOL OS_JavaScript::wheel_callback(int p_event_type, const EmscriptenWheelEve
 	InputDefault *input = get_singleton()->input;
 	Ref<InputEventMouseButton> ev;
 	ev.instance();
-	ev->set_button_mask(input->get_mouse_button_mask());
 	ev->set_position(input->get_mouse_position());
 	ev->set_global_position(ev->get_position());
 
@@ -484,10 +483,14 @@ EM_BOOL OS_JavaScript::wheel_callback(int p_event_type, const EmscriptenWheelEve
 	// Different browsers give wildly different delta values, and we can't
 	// interpret deltaMode, so use default value for wheel events' factor.
 
+	int button_flag = 1 << (ev->get_button_index() - 1);
+
 	ev->set_pressed(true);
+	ev->set_button_mask(input->get_mouse_button_mask() | button_flag);
 	input->parse_input_event(ev);
 
 	ev->set_pressed(false);
+	ev->set_button_mask(input->get_mouse_button_mask() & ~button_flag);
 	input->parse_input_event(ev);
 
 	return true;

platform/osx/os_osx.mm

@@ -1047,6 +1047,8 @@ static int remapKey(unsigned int key) {
 
 inline void sendScrollEvent(int button, double factor, int modifierFlags) {
 
+	unsigned int mask = 1 << (button - 1);
+
 	Ref<InputEventMouseButton> sc;
 	sc.instance();
 
@@ -1057,9 +1059,13 @@ inline void sendScrollEvent(int button, double factor, int modifierFlags) {
 	Vector2 mouse_pos = Vector2(mouse_x, mouse_y);
 	sc->set_position(mouse_pos);
 	sc->set_global_position(mouse_pos);
+	button_mask |= mask;
 	sc->set_button_mask(button_mask);
 	OS_OSX::singleton->push_input(sc);
+
 	sc->set_pressed(false);
+	button_mask &= ~mask;
+	sc->set_button_mask(button_mask);
 	OS_OSX::singleton->push_input(sc);
 }
 

platform/windows/os_windows.cpp

@@ -430,15 +430,7 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 			mm->set_shift((wParam & MK_SHIFT) != 0);
 			mm->set_alt(alt_mem);
 
-			int bmask = 0;
-			bmask |= (wParam & MK_LBUTTON) ? (1 << 0) : 0;
-			bmask |= (wParam & MK_RBUTTON) ? (1 << 1) : 0;
-			bmask |= (wParam & MK_MBUTTON) ? (1 << 2) : 0;
-			bmask |= (wParam & MK_XBUTTON1) ? (1 << 7) : 0;
-			bmask |= (wParam & MK_XBUTTON2) ? (1 << 8) : 0;
-			mm->set_button_mask(bmask);
-
-			last_button_state = mm->get_button_mask();
+			mm->set_button_mask(last_button_state);
 
 			mm->set_position(Vector2(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
 			mm->set_global_position(Vector2(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
@@ -607,15 +599,12 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 			mb->set_shift((wParam & MK_SHIFT) != 0);
 			mb->set_alt(alt_mem);
 			//mb->get_alt()=(wParam&MK_MENU)!=0;
-			int bmask = 0;
-			bmask |= (wParam & MK_LBUTTON) ? (1 << 0) : 0;
-			bmask |= (wParam & MK_RBUTTON) ? (1 << 1) : 0;
-			bmask |= (wParam & MK_MBUTTON) ? (1 << 2) : 0;
-			bmask |= (wParam & MK_XBUTTON1) ? (1 << 7) : 0;
-			bmask |= (wParam & MK_XBUTTON2) ? (1 << 8) : 0;
-			mb->set_button_mask(bmask);
-
-			last_button_state = mb->get_button_mask();
+			if (mb->is_pressed())
+				last_button_state |= (1 << (mb->get_button_index() - 1));
+			else
+				last_button_state &= ~(1 << (mb->get_button_index() - 1));
+			mb->set_button_mask(last_button_state);
+
 			mb->set_position(Vector2(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
 
 			if (mouse_mode == MOUSE_MODE_CAPTURED) {
@@ -653,6 +642,8 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 				if (mb->is_pressed() && mb->get_button_index() > 3 && mb->get_button_index() < 8) {
 					//send release for mouse wheel
 					Ref<InputEventMouseButton> mbd = mb->duplicate();
+					last_button_state &= ~(1 << (mbd->get_button_index() - 1));
+					mbd->set_button_mask(last_button_state);
 					mbd->set_pressed(false);
 					input->parse_input_event(mbd);
 				}

platform/x11/os_x11.cpp

@@ -1350,37 +1350,17 @@ void OS_X11::get_key_modifier_state(unsigned int p_x11_state, Ref<InputEventWith
 	state->set_metakey((p_x11_state & Mod4Mask));
 }
 
-unsigned int OS_X11::get_mouse_button_state(unsigned int p_x11_state) {
+unsigned int OS_X11::get_mouse_button_state(unsigned int p_x11_button, int p_x11_type) {
 
-	unsigned int state = 0;
+	unsigned int mask = 1 << (p_x11_button - 1);
 
-	if (p_x11_state & Button1Mask) {
-
-		state |= 1 << 0;
-	}
-
-	if (p_x11_state & Button3Mask) {
-
-		state |= 1 << 1;
-	}
-
-	if (p_x11_state & Button2Mask) {
-
-		state |= 1 << 2;
-	}
-
-	if (p_x11_state & Button4Mask) {
-
-		state |= 1 << 3;
-	}
-
-	if (p_x11_state & Button5Mask) {
-
-		state |= 1 << 4;
+	if (p_x11_type == ButtonPress) {
+		last_button_state |= mask;
+	} else {
+		last_button_state &= ~mask;
 	}
 
-	last_button_state = state;
-	return state;
+	return last_button_state;
 }
 
 void OS_X11::handle_key_event(XKeyEvent *p_event, bool p_echo) {
@@ -1885,14 +1865,14 @@ void OS_X11::process_xevents() {
 				mb.instance();
 
 				get_key_modifier_state(event.xbutton.state, mb);
-				mb->set_button_mask(get_mouse_button_state(event.xbutton.state));
-				mb->set_position(Vector2(event.xbutton.x, event.xbutton.y));
-				mb->set_global_position(mb->get_position());
-				mb->set_button_index(event.xbutton.button);
 				if (mb->get_button_index() == 2)
 					mb->set_button_index(3);
 				else if (mb->get_button_index() == 3)
 					mb->set_button_index(2);
+				mb->set_button_mask(get_mouse_button_state(event.xbutton.button, event.xbutton.type));
+				mb->set_position(Vector2(event.xbutton.x, event.xbutton.y));
+				mb->set_global_position(mb->get_position());
+				mb->set_button_index(event.xbutton.button);
 
 				mb->set_pressed((event.type == ButtonPress));
 
@@ -1996,7 +1976,7 @@ void OS_X11::process_xevents() {
 				mm.instance();
 
 				get_key_modifier_state(event.xmotion.state, mm);
-				mm->set_button_mask(get_mouse_button_state(event.xmotion.state));
+				mm->set_button_mask(get_mouse_button_state());
 				mm->set_position(pos);
 				mm->set_global_position(pos);
 				input->set_mouse_position(pos);

platform/x11/os_x11.h

@@ -135,7 +135,7 @@ class OS_X11 : public OS_Unix {
 	} touch;
 #endif
 
-	unsigned int get_mouse_button_state(unsigned int p_x11_state);
+	unsigned int get_mouse_button_state(unsigned int p_x11_button, int p_x11_type);
 	void get_key_modifier_state(unsigned int p_x11_state, Ref<InputEventWithModifiers> state);
 
 	MouseMode mouse_mode;