Android stylus pressure and tilt support

platform/android/android_input_handler.cpp

@@ -292,7 +292,7 @@ void AndroidInputHandler::_release_mouse_event_info(bool p_source_mouse_relative
 	mouse_event_info.valid = false;
 }
 
-void AndroidInputHandler::process_mouse_event(int p_event_action, int p_event_android_buttons_mask, Point2 p_event_pos, Vector2 p_delta, bool p_double_click, bool p_source_mouse_relative) {
+void AndroidInputHandler::process_mouse_event(int p_event_action, int p_event_android_buttons_mask, Point2 p_event_pos, Vector2 p_delta, bool p_double_click, bool p_source_mouse_relative, float p_pressure, Vector2 p_tilt) {
 	BitField<MouseButtonMask> event_buttons_mask = _android_button_mask_to_godot_button_mask(p_event_android_buttons_mask);
 	switch (p_event_action) {
 		case AMOTION_EVENT_ACTION_HOVER_MOVE: // hover move
@@ -349,6 +349,8 @@ void AndroidInputHandler::process_mouse_event(int p_event_action, int p_event_an
 				hover_prev_pos = p_event_pos;
 			}
 			ev->set_button_mask(event_buttons_mask);
+			ev->set_pressure(p_pressure);
+			ev->set_tilt(p_tilt);
 			Input::get_singleton()->parse_input_event(ev);
 		} break;
 

platform/android/android_input_handler.h

@@ -96,7 +96,7 @@ private:
 	void _cancel_all_touch();
 
 public:
-	void process_mouse_event(int p_event_action, int p_event_android_buttons_mask, Point2 p_event_pos, Vector2 p_delta, bool p_double_click, bool p_source_mouse_relative);
+	void process_mouse_event(int p_event_action, int p_event_android_buttons_mask, Point2 p_event_pos, Vector2 p_delta, bool p_double_click, bool p_source_mouse_relative, float p_pressure, Vector2 p_tilt);
 	void process_touch_event(int p_event, int p_pointer, const Vector<TouchPos> &p_points, bool p_double_tap);
 	void process_magnify(Point2 p_pos, float p_factor);
 	void process_pan(Point2 p_pos, Vector2 p_delta);

platform/android/java/lib/src/org/godotengine/godot/GodotLib.java

@@ -114,7 +114,7 @@ public class GodotLib {
 	/**
 	 * Dispatch mouse events
 	 */
-	public static native void dispatchMouseEvent(int event, int buttonMask, float x, float y, float deltaX, float deltaY, boolean doubleClick, boolean sourceMouseRelative);
+	public static native void dispatchMouseEvent(int event, int buttonMask, float x, float y, float deltaX, float deltaY, boolean doubleClick, boolean sourceMouseRelative, float pressure, float tiltX, float tiltY);
 
 	public static native void magnify(float x, float y, float factor);
 

platform/android/java/lib/src/org/godotengine/godot/input/GodotInputHandler.java

@@ -433,7 +433,7 @@ public class GodotInputHandler implements InputManager.InputDeviceListener {
 	}
 
 	private static boolean isMouseEvent(int eventSource) {
-		boolean mouseSource = ((eventSource & InputDevice.SOURCE_MOUSE) == InputDevice.SOURCE_MOUSE) || ((eventSource & (InputDevice.SOURCE_TOUCHSCREEN | InputDevice.SOURCE_STYLUS)) == InputDevice.SOURCE_STYLUS);
+		boolean mouseSource = ((eventSource & InputDevice.SOURCE_MOUSE) == InputDevice.SOURCE_MOUSE) || ((eventSource & InputDevice.SOURCE_STYLUS) == InputDevice.SOURCE_STYLUS);
 		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
 			mouseSource = mouseSource || ((eventSource & InputDevice.SOURCE_MOUSE_RELATIVE) == InputDevice.SOURCE_MOUSE_RELATIVE);
 		}
@@ -470,13 +470,27 @@ public class GodotInputHandler implements InputManager.InputDeviceListener {
 		final float y = event.getY();
 		final int buttonsMask = event.getButtonState();
 
+		final float pressure = event.getPressure();
+
+		// Orientation is returned as a radian value between 0 to pi clockwise or 0 to -pi counterclockwise.
+		final float orientation = event.getOrientation();
+
+		// Tilt is zero is perpendicular to the screen and pi/2 is flat on the surface.
+		final float tilt = event.getAxisValue(MotionEvent.AXIS_TILT);
+
+		float tiltMult = (float)Math.sin(tilt);
+
+		// To be consistent with expected tilt.
+		final float tiltX = (float)-Math.sin(orientation) * tiltMult;
+		final float tiltY = (float)Math.cos(orientation) * tiltMult;
+
 		final float verticalFactor = event.getAxisValue(MotionEvent.AXIS_VSCROLL);
 		final float horizontalFactor = event.getAxisValue(MotionEvent.AXIS_HSCROLL);
 		boolean sourceMouseRelative = false;
 		if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
 			sourceMouseRelative = event.isFromSource(InputDevice.SOURCE_MOUSE_RELATIVE);
 		}
-		return handleMouseEvent(eventAction, buttonsMask, x, y, horizontalFactor, verticalFactor, false, sourceMouseRelative);
+		return handleMouseEvent(eventAction, buttonsMask, x, y, horizontalFactor, verticalFactor, false, sourceMouseRelative, pressure, tiltX, tiltY);
 	}
 
 	static boolean handleMouseEvent(int eventAction, int buttonsMask, float x, float y) {
@@ -484,6 +498,10 @@ public class GodotInputHandler implements InputManager.InputDeviceListener {
 	}
 
 	static boolean handleMouseEvent(int eventAction, int buttonsMask, float x, float y, float deltaX, float deltaY, boolean doubleClick, boolean sourceMouseRelative) {
+		return handleMouseEvent(eventAction, buttonsMask, x, y, deltaX, deltaY, doubleClick, sourceMouseRelative, 1, 0, 0);
+	}
+
+	static boolean handleMouseEvent(int eventAction, int buttonsMask, float x, float y, float deltaX, float deltaY, boolean doubleClick, boolean sourceMouseRelative, float pressure, float tiltX, float tiltY) {
 		// Fix the buttonsMask
 		switch (eventAction) {
 			case MotionEvent.ACTION_CANCEL:
@@ -511,7 +529,7 @@ public class GodotInputHandler implements InputManager.InputDeviceListener {
 			case MotionEvent.ACTION_HOVER_MOVE:
 			case MotionEvent.ACTION_MOVE:
 			case MotionEvent.ACTION_SCROLL: {
-				GodotLib.dispatchMouseEvent(eventAction, buttonsMask, x, y, deltaX, deltaY, doubleClick, sourceMouseRelative);
+				GodotLib.dispatchMouseEvent(eventAction, buttonsMask, x, y, deltaX, deltaY, doubleClick, sourceMouseRelative, pressure, tiltX, tiltY);
 				return true;
 			}
 		}

platform/android/java_godot_lib_jni.cpp

@@ -274,12 +274,12 @@ JNIEXPORT jboolean JNICALL Java_org_godotengine_godot_GodotLib_step(JNIEnv *env,
 }
 
 // Called on the UI thread
-JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_dispatchMouseEvent(JNIEnv *env, jclass clazz, jint p_event_type, jint p_button_mask, jfloat p_x, jfloat p_y, jfloat p_delta_x, jfloat p_delta_y, jboolean p_double_click, jboolean p_source_mouse_relative) {
+JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_dispatchMouseEvent(JNIEnv *env, jclass clazz, jint p_event_type, jint p_button_mask, jfloat p_x, jfloat p_y, jfloat p_delta_x, jfloat p_delta_y, jboolean p_double_click, jboolean p_source_mouse_relative, jfloat p_pressure, jfloat p_tilt_x, jfloat p_tilt_y) {
 	if (step.get() <= 0) {
 		return;
 	}
 
-	input_handler->process_mouse_event(p_event_type, p_button_mask, Point2(p_x, p_y), Vector2(p_delta_x, p_delta_y), p_double_click, p_source_mouse_relative);
+	input_handler->process_mouse_event(p_event_type, p_button_mask, Point2(p_x, p_y), Vector2(p_delta_x, p_delta_y), p_double_click, p_source_mouse_relative, p_pressure, Vector2(p_tilt_x, p_tilt_y));
 }
 
 // Called on the UI thread

platform/android/java_godot_lib_jni.h

@@ -45,7 +45,7 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_newcontext(JNIEnv *en
 JNIEXPORT jboolean JNICALL Java_org_godotengine_godot_GodotLib_step(JNIEnv *env, jclass clazz);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_ttsCallback(JNIEnv *env, jclass clazz, jint event, jint id, jint pos);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_back(JNIEnv *env, jclass clazz);
-JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_dispatchMouseEvent(JNIEnv *env, jclass clazz, jint p_event_type, jint p_button_mask, jfloat p_x, jfloat p_y, jfloat p_delta_x, jfloat p_delta_y, jboolean p_double_click, jboolean p_source_mouse_relative);
+JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_dispatchMouseEvent(JNIEnv *env, jclass clazz, jint p_event_type, jint p_button_mask, jfloat p_x, jfloat p_y, jfloat p_delta_x, jfloat p_delta_y, jboolean p_double_click, jboolean p_source_mouse_relative, jfloat p_pressure, jfloat p_tilt_x, jfloat p_tilt_y);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_dispatchTouchEvent(JNIEnv *env, jclass clazz, jint ev, jint pointer, jint pointer_count, jfloatArray positions, jboolean p_double_tap);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_magnify(JNIEnv *env, jclass clazz, jfloat p_x, jfloat p_y, jfloat p_factor);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_pan(JNIEnv *env, jclass clazz, jfloat p_x, jfloat p_y, jfloat p_delta_x, jfloat p_delta_y);