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 namespace Internal
  37 {
  38 class CanvasView;
  39 class CanvasViewRasterizeThread;
  40
  41 class CanvasView : public Control, public Integration::Processor
  42 {
  43 public:
  44   /**
  45    * Construct a new CanvasView.
  46    */
  47   CanvasView(const Vector2& viewBox);
  48
  49   /**
  50    * A reference counted object may only be deleted by calling Unreference()
  51    */
  52   virtual ~CanvasView();
  53
  54 public:
  55   /**
  56    * Create a new CanvasView.
  57    * @return A smart-pointer to the newly allocated CanvasView.
  58    */
  59   static Toolkit::CanvasView New(const Vector2& viewBox);
  60
  61   /**
  62    * @copydoc Toolkit::Control::CanvasView::AddDrawable
  63    */
  64   bool AddDrawable(Dali::CanvasRenderer::Drawable& drawable);
  65
  66 private: // From Control
  67   /**
  68    * @copydoc Control::OnRelayout
  69    */
  70   void OnRelayout(const Vector2& size, RelayoutContainer& container) override;
  71
  72   /**
  73    * @copydoc Toolkit::Control::OnSizeSet()
  74    */
  75   void OnSizeSet(const Vector3& targetSize) override;
  76
  77   /**
  78    * @copydoc Toolkit::Control::OnInitialize
  79    */
  80   void OnInitialize() override;
  81
  82   /**
  83    * @bried Rasterize the canvas, and add it to the view.
  84    *
  85    * @param[in] size The target size of the canvas view rasterization.
  86    */
  87   void AddRasterizationTask();
  88
  89 protected:
  90   /**
  91    * @copydoc Dali::Integration::Processor::Process()
  92    */
  93   void Process(bool postProcessor) override;
  94
  95 public:
  96   /**
  97    * @bried Apply the rasterized image to the canvas view
  98    *
  99    * @param[in] rasterizedPixelData The pixel buffer with the rasterized pixels
 100    */
 101   void ApplyRasterizedImage(PixelData rasterizedPixelData);
 102
 103 private:
 104   CanvasView(const CanvasView&) = delete;
 105   CanvasView& operator=(const CanvasView&) = delete;
 106
 107 private:
 108   CanvasRenderer             mCanvasRenderer;
 109   Dali::Texture              mTexture;
 110   TextureSet                 mTextureSet;
 111   Vector2                    mSize;
 112   CanvasViewRasterizeThread* mCanvasViewRasterizeThread;
 113 };
 114
 115 } // namespace Internal
 116
 117 // Helpers for public-api forwarding methods
 118 inline Toolkit::Internal::CanvasView& GetImpl(Toolkit::CanvasView& obj)
 119 {
 120   DALI_ASSERT_ALWAYS(obj);
 121   Dali::RefObject& handle = obj.GetImplementation();
 122   return static_cast<Toolkit::Internal::CanvasView&>(handle);
 123 }
 124
 125 inline const Toolkit::Internal::CanvasView& GetImpl(const Toolkit::CanvasView& obj)
 126 {
 127   DALI_ASSERT_ALWAYS(obj);
 128   const Dali::RefObject& handle = obj.GetImplementation();
 129   return static_cast<const Toolkit::Internal::CanvasView&>(handle);
 130 }
 131
 132 } // namespace Toolkit
 133
 134 } // namespace Dali
 135
 136 #endif // DALI_TOOLKIT_INTERNAL_CANVAS_VIEW_H