fix hidpi bug

Author: jube

include/gf2/graphics/Scene.h

@@ -29,6 +29,9 @@ namespace gf {
     void set_surface_size(Vec2I size);
     Vec2I surface_size() const;
 
+    void set_window_size(Vec2I size);
+    Vec2I window_size() const;
+
     void set_clear_color(Color color);
     Color clear_color() const;
 
@@ -81,6 +84,7 @@ namespace gf {
     SceneVisibility m_visibility = SceneVisibility::Shown;
 
     Vec2I m_surface_size = { 1, 1 };
+    Vec2I m_window_size = { 1, 1 };
     Color m_clear_color = Black;
   };
 

library/graphics/Scene.cc

@@ -24,6 +24,16 @@ namespace gf {
     return m_surface_size;
   }
 
+  void BasicScene::set_window_size(Vec2I size)
+  {
+    m_window_size = size;
+  }
+
+  Vec2I BasicScene::window_size() const
+  {
+    return m_window_size;
+  }
+
   void BasicScene::set_clear_color(Color color)
   {
     m_clear_color = gf::srgb_to_linear(color);
@@ -214,12 +224,12 @@ namespace gf {
 
   Vec2F Scene::position_to_world_location(Vec2I position)
   {
-    return m_world_camera.position_to_location(position, surface_size());
+    return m_world_camera.position_to_location(position, window_size());
   }
 
   Vec2I Scene::world_location_to_position(Vec2F location)
   {
-    return m_world_camera.location_to_position(location, surface_size());
+    return m_world_camera.location_to_position(location, window_size());
   }
 
   void Scene::update_entities(Time time)

library/graphics/SceneManager.cc

@@ -381,9 +381,14 @@ namespace gf {
     while (!m_curr_scenes.empty() && !window()->should_close()) {
       std::vector<BasicScene*> scenes = m_curr_scenes; // make a copy to avoid iterator invalidation
       m_scenes_changed = false;
+
       auto surface_size = window()->surface_size();
+      auto window_size = window()->size();
 
-      std::for_each(scenes.begin(), scenes.end(), [surface_size](auto* scene) { scene->set_surface_size(surface_size); });
+      std::for_each(scenes.begin(), scenes.end(), [surface_size, window_size](auto* scene) {
+        scene->set_surface_size(surface_size);
+        scene->set_window_size(window_size);
+      });
 
       auto* current_scene = scenes.back();
       current_scene->show();
@@ -398,6 +403,11 @@ namespace gf {
               window()->close();
               break;
 
+            case EventType::WindowResized:
+              window_size = event->from<EventType::WindowResized>().size;
+              std::for_each(scenes.begin(), scenes.end(), [window_size](auto* scene) { scene->set_window_size(window_size); });
+              break;
+
             case EventType::WindowPixelSizeChanged:
               surface_size = event->from<EventType::WindowPixelSizeChanged>().size;
               render_manager()->update_surface_size(surface_size);