added partial mouse events on osx

engine/app.cpp

@@ -486,3 +486,16 @@ void App::resize(float w, float h)
     YGNodeStyleSetHeight(y_root, height);
     update_layout();
 }
+
+void App::mouse_down(int button, float x, float y)
+{
+    printf("mouse click %f %f\n", x, y);
+}
+void App::mouse_move(float x, float y)
+{
+    
+}
+void App::mouse_up(int button, float x, float y)
+{
+    
+}

engine/app.hpp

@@ -26,6 +26,9 @@ public:
     void create();
     void update(float dt);
     void resize(float w, float h);
+    void mouse_down(int button, float x, float y);
+    void mouse_move(float x, float y);
+    void mouse_up(int button, float x, float y);
     void update_layout();
     void load_layout();
 };

engine/main.cpp

@@ -192,6 +192,21 @@ static CVReturn MyDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTime
     
     [super renewGState];
 }
+- (void)mouseDown:(NSEvent *)theEvent
+{
+    auto mouseLoc = [self convertPoint:[theEvent locationInWindow] fromView:nil];
+    App::I.mouse_down(0, mouseLoc.x, mouseLoc.y);
+}
+- (void)mouseUp:(NSEvent *)theEvent
+{
+    auto mouseLoc = [self convertPoint:[theEvent locationInWindow] fromView:nil];
+    App::I.mouse_up(0, mouseLoc.x, mouseLoc.y);
+}
+- (void)mouseMoved:(NSEvent *)theEvent
+{
+    auto mouseLoc = [self convertPoint:[theEvent locationInWindow] fromView:nil];
+    App::I.mouse_move(mouseLoc.x, mouseLoc.y);
+}
 @end
 
 @interface Window : NSWindow