dali-toolkit/internal/controls/canvas-view/canvas-view-impl.h

   1 #ifndef DALI_TOOLKIT_INTERNAL_CANVAS_VIEW_H
   2 #define DALI_TOOLKIT_INTERNAL_CANVAS_VIEW_H
   3
   4 /*
   5  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  * http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  */
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/devel-api/adaptor-framework/canvas-renderer-drawable.h>
  23 #include <dali/devel-api/adaptor-framework/canvas-renderer-shape.h>
  24 #include <dali/devel-api/adaptor-framework/canvas-renderer.h>
  25 #include <dali/devel-api/rendering/renderer-devel.h>
  26 #include <dali/integration-api/processor-interface.h>
  27
  28 // INTERNAL INCLUDES
  29 #include <dali-toolkit/devel-api/controls/canvas-view/canvas-view.h>
  30 #include <dali-toolkit/public-api/controls/control-impl.h>
  31
  32 namespace Dali
  33 {
  34 namespace Toolkit
  35 {
  36 class CanvasView;
  37
  38 namespace Internal
  39 {
  40 class CanvasView : public Control, public Integration::Processor
  41 {
  42 public:
  43   /**
  44    * Construct a new CanvasView.
  45    */
  46   CanvasView(const Vector2& viewBox);
  47
  48   /**
  49    * A reference counted object may only be deleted by calling Unreference()
  50    */
  51   virtual ~CanvasView();
  52
  53 public:
  54   /**
  55    * Create a new CanvasView.
  56    * @return A smart-pointer to the newly allocated CanvasView.
  57    */
  58   static Toolkit::CanvasView New(const Vector2& viewBox);
  59
  60   /**
  61    * @copydoc Toolkit::Control::CanvasView::AddDrawable
  62    */
  63   bool AddDrawable(Dali::CanvasRenderer::Drawable& drawable);
  64
  65 private: // From Control
  66   /**
  67    * @copydoc Control::OnRelayout
  68    */
  69   void OnRelayout(const Vector2& size, RelayoutContainer& container) override;
  70
  71   /**
  72    * @copydoc Toolkit::Control::OnSizeSet()
  73    */
  74   void OnSizeSet(const Vector3& targetSize) override;
  75
  76   /**
  77    * @copydoc Toolkit::Control::OnInitialize
  78    */
  79   void OnInitialize() override;
  80
  81 protected: // Implementation of Processor
  82   /**
  83    * @copydoc Dali::Integration::Processor::Process()
  84    */
  85   void Process(bool postProcessor) override;
  86
  87 private:
  88   /**
  89    * @brief Draw drawables added to CanvasView on inner canvas.
  90    * Then make that buffer into a texture and add it to renderer.
  91    */
  92   void Commit();
  93
  94 private:
  95   CanvasView(const CanvasView&) = delete;
  96   CanvasView& operator=(const CanvasView&) = delete;
  97
  98 private:
  99   CanvasRenderer mCanvasRenderer;
 100   Dali::Texture  mTexture;
 101   bool           mChanged;
 102 };
 103
 104 } // namespace Internal
 105
 106 // Helpers for public-api forwarding methods
 107 inline Toolkit::Internal::CanvasView& GetImpl(Toolkit::CanvasView& obj)
 108 {
 109   DALI_ASSERT_ALWAYS(obj);
 110   Dali::RefObject& handle = obj.GetImplementation();
 111   return static_cast<Toolkit::Internal::CanvasView&>(handle);
 112 }
 113
 114 inline const Toolkit::Internal::CanvasView& GetImpl(const Toolkit::CanvasView& obj)
 115 {
 116   DALI_ASSERT_ALWAYS(obj);
 117   const Dali::RefObject& handle = obj.GetImplementation();
 118   return static_cast<const Toolkit::Internal::CanvasView&>(handle);
 119 }
 120
 121 } // namespace Toolkit
 122
 123 } // namespace Dali
 124
 125 #endif // DALI_TOOLKIT_INTERNAL_CANVAS_VIEW_H