dali-toolkit/internal/controls/super-blur-view/super-blur-view-impl.h

   1 #ifndef __DALI_TOOLKIT_INTERNAL_SUPER_BLUR_VIEW_H__
   2 #define __DALI_TOOLKIT_INTERNAL_SUPER_BLUR_VIEW_H__
   3
   4 //
   5 // Copyright (c) 2014 Samsung Electronics Co., Ltd.
   6 //
   7 // Licensed under the Flora License, Version 1.0 (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://floralicense.org/license/
  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 // INTERNAL INCLUDES
  21 #include <dali/dali.h>
  22 #include <dali-toolkit/public-api/controls/control-impl.h>
  23 #include <dali-toolkit/public-api/controls/super-blur-view/super-blur-view.h>
  24 #include <dali-toolkit/public-api/controls/gaussian-blur-view/gaussian-blur-view.h>
  25
  26 namespace Dali
  27 {
  28
  29 namespace Toolkit
  30 {
  31
  32 class SuperBlurView;
  33
  34 namespace Internal
  35 {
  36
  37 /**
  38  * SuperBlurView implementation class
  39  */
  40 class SuperBlurView : public ControlImpl
  41 {
  42 public:
  43
  44   /**
  45    * @copydoc Dali::Toolkit::SuperBlurView::New
  46    */
  47   static Toolkit::SuperBlurView New( unsigned int blurLevels );
  48
  49   /**
  50    * @copydoc Dali::Toolkit::SuperBlurView::SetImage
  51    */
  52   void SetImage(Image inputImage);
  53
  54   /**
  55    * @copydoc Dali::Toolkit::SuperBlurView::GetBlurStrengthPropertyIndex
  56    */
  57   Property::Index GetBlurStrengthPropertyIndex() const;
  58
  59   /**
  60    * @copydoc Dali::Toolkit::SuperBlurView::SetBlurStrength
  61    */
  62   void SetBlurStrength( float blurStrength );
  63
  64   /**
  65    * @copydoc Dali::Toolkit::SuperBlurView::GetCurrentBlurStrength
  66    */
  67   float GetCurrentBlurStrength() const;
  68
  69   /**
  70    * @copydoc Dali::Toolkit::SuperBlurView::BlurFinishedSignal
  71    */
  72   Dali::Toolkit::SuperBlurView::SuperBlurViewSignal& BlurFinishedSignal();
  73
  74   /**
  75    * @copydoc Dali::Toolkit::SuperBlurView::GetBlurredImage
  76    */
  77   Image GetBlurredImage( unsigned int level );
  78
  79 protected:
  80
  81   /**
  82    * Constructor. It initializes the SuperBlurView members
  83    */
  84   SuperBlurView( unsigned int blurLevels );
  85
  86   /**
  87    * A reference counted object may only be deleted by calling Unreference()
  88    */
  89   virtual ~SuperBlurView();
  90
  91 private: // from ControlImpl
  92
  93   /**
  94    * @copydoc Toolkit::Control::OnInitialize
  95    */
  96   virtual void OnInitialize();
  97
  98   /**
  99    * @copydoc Toolkit::Control::OnControlSizeSet
 100    */
 101   virtual void OnControlSizeSet(const Vector3& targetSize);
 102
 103   /**
 104    * @copydoc Toolkit::ControlImpl::OnRelaidOut()
 105    */
 106   virtual void OnRelaidOut( Vector2 size, ActorSizeContainer& container );
 107
 108 private:
 109
 110   /**
 111    * Carry out the idx-th pass of blurring
 112    * @param[in] idx The blur pass index
 113    * @param[in] image The input image for the current blurring, it is either the original image or the blurred image from the previous pass
 114    */
 115   void BlurImage( unsigned int idx, Image image );
 116
 117   /**
 118    * Signal handler to tell when the last blur view completes
 119    * @param[in] blurView The blur view that just completed
 120    */
 121   void OnBlurViewFinished( Toolkit::GaussianBlurView blurView );
 122
 123   /**
 124    * Clear the resources used to create the blurred image
 125    */
 126   void ClearBlurResource();
 127
 128 private:
 129
 130   unsigned int                           mBlurLevels;
 131
 132   Property::Index                        mBlurStrengthPropertyIndex;
 133
 134   std::vector<Toolkit::GaussianBlurView> mGaussianBlurView;
 135   std::vector<FrameBufferImage>          mBlurredImage;
 136   std::vector<ImageActor>                mImageActors;
 137   bool                                   mResourcesCleared;
 138
 139   Vector2                                mTargetSize;
 140   Toolkit::SuperBlurView::SuperBlurViewSignal mBlurFinishedSignal; ///< Signal emitted when blur has completed.
 141 };
 142
 143 }
 144
 145 // Helpers for public-api forwarding methods
 146 inline Toolkit::Internal::SuperBlurView& GetImpl( Toolkit::SuperBlurView& obj )
 147 {
 148   DALI_ASSERT_ALWAYS(obj);
 149   Dali::RefObject& handle = obj.GetImplementation();
 150   return static_cast<Toolkit::Internal::SuperBlurView&>(handle);
 151 }
 152
 153 inline const Toolkit::Internal::SuperBlurView& GetImpl( const Toolkit::SuperBlurView& obj )
 154 {
 155   DALI_ASSERT_ALWAYS(obj);
 156   const Dali::RefObject& handle = obj.GetImplementation();
 157   return static_cast<const Toolkit::Internal::SuperBlurView&>(handle);
 158 }
 159
 160 }
 161
 162 }
 163
 164 #endif /* __DALI_TOOLKIT_INTERNALSUPER_BLUR_VIEW_H__ */