window: solve problem: continuously maximize window will crash some app, such as qqmusic...

continuously maximize window will crash some app, such as qqmusic...

src/anbox/platform/sdl/platform.cpp

@@ -298,6 +298,14 @@ void Platform::process_input_event(const SDL_Event &event) {
   switch (event.type) {
     // Mouse
     case SDL_MOUSEBUTTONDOWN:
+      for (auto &iter : windows_) {
+        if (auto w = iter.second.lock()) {
+          if (w->window_id() == event.window.windowID &&
+                  w->title_event_filter(event.button.y)) {
+            return;
+          }
+        }
+      }
       if (config_.no_touch_emulation) {
         mouse_events.push_back({EV_KEY, BTN_LEFT, 1});
       } else {

src/anbox/platform/sdl/window.cpp

@@ -131,6 +131,11 @@ Window::~Window() {
   if (window_) SDL_DestroyWindow(window_);
 }
 
+bool Window::title_event_filter(int point_y) {
+  const auto top_drag_area_height = graphics::dp_to_pixel(button_size + (button_margin << 1));
+  return point_y < top_drag_area_height;
+}
+
 SDL_HitTestResult Window::on_window_hit(SDL_Window *window, const SDL_Point *pt, void *data) {
   auto platform_window = reinterpret_cast<Window*>(data);
 

src/anbox/platform/sdl/window.h

@@ -72,6 +72,7 @@ class Window : public std::enable_shared_from_this<Window>, public wm::Window {
          bool resizable);
   ~Window();
 
+  bool title_event_filter(int y) override;
   void process_event(const SDL_Event &event);
   bool check_min_state() {return SDL_GetWindowFlags(window_) & SDL_WINDOW_MINIMIZED;}
  

src/anbox/wm/window.cpp

@@ -58,5 +58,9 @@ void Window::release() {
     return;
   renderer_->destroyNativeWindow(native_handle());
 }
+
+bool Window::title_event_filter(int y) {
+  return false;
+}
 }  // namespace wm
 }  // namespace anbox

src/anbox/wm/window.h

@@ -55,6 +55,7 @@ class Window {
   void update_frame(const graphics::Rect &frame);
 
   virtual EGLNativeWindowType native_handle() const;
+  virtual bool title_event_filter(int y);
   graphics::Rect frame() const;
   Task::Id task() const;
   std::string title() const;