TizenViewElementary: Change the size of view when the size of contain…

…er changes (#302)

* TizenViewElementary: Change the size of view when the size of container changes

When the size of the container is changed from the outside,
the size of FlutterView and the size of the image are changed together.

+)
Basically, the size of the container is set according to the size of the image.
It was enough to set min/max size only for images.
After setting the image size for an unknown reason,
the container resize callback is called once again.
At this time, evas_object_geometry_get() of container_ returns
the initially set value and the size backs to the original size.
Therefore, we set min/max of container_ together.

* TIzenViewBase: Refactoring view resize

OnGeometryChanged() is not a method for TizenView, so refactor it to not use it.

shell/platform/tizen/flutter_tizen_elementary.cc

@@ -92,6 +92,5 @@ void FlutterDesktopViewResize(FlutterDesktopViewRef view_ref,
                               int32_t width,
                               int32_t height) {
   auto* view = reinterpret_cast<flutter::FlutterTizenView*>(view_ref);
-  flutter::TizenGeometry view_geometry = {0, 0, width, height};
-  view->tizen_view()->OnGeometryChanged(view_geometry);
+  view->OnResize(0, 0, width, height);
 }

shell/platform/tizen/tizen_view_base.h

@@ -48,10 +48,6 @@ class TizenViewBase {
 
   virtual void ResizeWithRotation(TizenGeometry geometry, int32_t degree) = 0;
 
-  // FIXME
-  // This is a temporary implementation that is only used by the window channel.
-  virtual void OnGeometryChanged(TizenGeometry geometry) = 0;
-
   virtual void Show() = 0;
 
   virtual TizenViewType GetType() = 0;

shell/platform/tizen/tizen_view_elementary.cc

@@ -87,7 +87,6 @@ bool TizenViewElementary::CreateView() {
     return false;
   }
   evas_object_size_hint_align_set(image_, EVAS_HINT_FILL, EVAS_HINT_FILL);
-  EvasObjectResize(image_, initial_width_, initial_height_);
   evas_object_image_size_set(image_, initial_width_, initial_height_);
   evas_object_image_alpha_set(image_, EINA_TRUE);
   elm_table_pack(container_, image_, 0, 0, 1, 1);
@@ -107,6 +106,8 @@ bool TizenViewElementary::CreateView() {
   evas_object_color_set(event_layer_, 0, 0, 0, 0);
   elm_table_pack(container_, event_layer_, 0, 0, 1, 1);
 
+  SetGeometry(TizenGeometry{0, 0, initial_width_, initial_height_});
+
   return true;
 }
 
@@ -117,6 +118,22 @@ void TizenViewElementary::DestroyView() {
 }
 
 void TizenViewElementary::RegisterEventHandlers() {
+  evas_object_callbacks_[EVAS_CALLBACK_RESIZE] =
+      [](void* data, Evas* evas, Evas_Object* object, void* event_info) {
+        auto* self = reinterpret_cast<TizenViewElementary*>(data);
+        if (self->view_) {
+          if (self->container_ == object) {
+            int32_t width = 0, height = 0;
+            evas_object_geometry_get(object, nullptr, nullptr, &width, &height);
+
+            self->view_->OnResize(0, 0, width, height);
+          }
+        }
+      };
+  evas_object_event_callback_add(container_, EVAS_CALLBACK_RESIZE,
+                                 evas_object_callbacks_[EVAS_CALLBACK_RESIZE],
+                                 this);
+
   evas_object_callbacks_[EVAS_CALLBACK_MOUSE_DOWN] =
       [](void* data, Evas* evas, Evas_Object* object, void* event_info) {
         auto* self = reinterpret_cast<TizenViewElementary*>(data);
@@ -263,6 +280,8 @@ void TizenViewElementary::RegisterEventHandlers() {
 }
 
 void TizenViewElementary::UnregisterEventHandlers() {
+  evas_object_event_callback_del(container_, EVAS_CALLBACK_RESIZE,
+                                 evas_object_callbacks_[EVAS_CALLBACK_RESIZE]);
   evas_object_event_callback_del(
       event_layer_, EVAS_CALLBACK_MOUSE_DOWN,
       evas_object_callbacks_[EVAS_CALLBACK_MOUSE_DOWN]);
@@ -292,6 +311,10 @@ TizenGeometry TizenViewElementary::GetGeometry() {
 void TizenViewElementary::SetGeometry(TizenGeometry geometry) {
   EvasObjectResize(image_, geometry.width, geometry.height);
   evas_object_move(image_, geometry.left, geometry.top);
+  evas_object_image_size_set(image_, geometry.width, geometry.height);
+
+  EvasObjectResize(container_, geometry.width, geometry.height);
+  evas_object_move(container_, geometry.left, geometry.top);
 }
 
 int32_t TizenViewElementary::GetDpi() {
@@ -309,6 +332,8 @@ uintptr_t TizenViewElementary::GetWindowId() {
 
 void TizenViewElementary::ResizeWithRotation(TizenGeometry geometry,
                                              int32_t angle) {
+  SetGeometry(geometry);
+
   TizenRendererEvasGL* renderer_evas_gl =
       reinterpret_cast<TizenRendererEvasGL*>(view_->engine()->renderer());
   renderer_evas_gl->ResizeSurface(geometry.width, geometry.height);
@@ -320,11 +345,6 @@ void TizenViewElementary::Show() {
   evas_object_show(event_layer_);
 }
 
-void TizenViewElementary::OnGeometryChanged(TizenGeometry geometry) {
-  SetGeometry(geometry);
-  view_->OnResize(geometry.left, geometry.top, geometry.width, geometry.height);
-}
-
 void TizenViewElementary::PrepareInputMethod() {
   input_method_context_ =
       std::make_unique<TizenInputMethodContext>(GetWindowId());

shell/platform/tizen/tizen_view_elementary.h

@@ -40,8 +40,6 @@ class TizenViewElementary : public TizenView {
 
   void Show() override;
 
-  void OnGeometryChanged(TizenGeometry geometry) override;
-
  private:
   bool CreateView();
 

shell/platform/tizen/tizen_window.h

@@ -30,6 +30,8 @@ class TizenWindow : public TizenViewBase {
   // Returns the geometry of the display screen.
   virtual TizenGeometry GetScreenGeometry() = 0;
 
+  virtual void OnGeometryChanged(TizenGeometry geometry) = 0;
+
   virtual void BindKeys(const std::vector<std::string>& keys) = 0;
 
   TizenViewType GetType() override { return TizenViewType::kWindow; };