1 #ifndef __DALI_TOOLKIT_INTERNAL_BLUR_TWO_PASS_FILTER_H__
2 #define __DALI_TOOLKIT_INTERNAL_BLUR_TWO_PASS_FILTER_H__
5 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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.
22 #include <dali/public-api/render-tasks/render-task.h>
23 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
24 #include <dali/public-api/actors/image-actor.h>
27 #include "image-filter.h"
39 * A two pass blur filter, pass one performs a horizontal blur and pass two performs a
40 * vertical blur on the result of pass one.
42 class BlurTwoPassFilter : public ImageFilter
53 virtual ~BlurTwoPassFilter();
55 public: // From ImageFilter
56 /// @copydoc Dali::Toolkit::Internal::ImageFilter::Enable
57 virtual void Enable();
59 /// @copydoc Dali::Toolkit::Internal::ImageFilter::Disable
60 virtual void Disable();
62 /// @copydoc Dali::Toolkit::Internal::ImageFilter::Refresh
63 virtual void Refresh();
65 /// @copydoc Dali::Toolkit::Internal::ImageFilter::SetSize
66 virtual void SetSize( const Vector2& size );
69 * Get the property index that controls the strength of the blur applied to the image. Useful for animating this property.
70 * This property represents a value in the range [0.0 - 1.0] where 0.0 is no blur and 1.0 is full blur.
72 Property::Index GetBlurStrengthPropertyIndex() const {return mBlurStrengthPropertyIndex;}
75 * Retrieve the handle to the object in order to animate or constrain the blur strength property
76 * @return The hadnle to the object which blends the output image according to the blur strength
78 Handle GetHandleForAnimateBlurStrength();
83 * Setup render tasks for blur
85 void CreateRenderTasks();
88 BlurTwoPassFilter( const BlurTwoPassFilter& );
89 BlurTwoPassFilter& operator=( const BlurTwoPassFilter& );
91 private: // Attributes
93 // To perform horizontal blur from mInputImage to mImageForHorz
94 RenderTask mRenderTaskForHorz;
95 Toolkit::ImageView mActorForInput;
96 FrameBufferImage mImageForHorz;
98 // To perform vertical blur from mImageForHorz to mOutputImage
99 RenderTask mRenderTaskForVert;
100 Toolkit::ImageView mActorForHorz;
101 FrameBufferImage mBlurredImage;
103 // To blend the blurred image and input image according to the blur strength
104 RenderTask mRenderTaskForBlending;
105 Toolkit::ImageView mActorForBlending;
106 Actor mRootActorForBlending;
107 Property::Index mBlurStrengthPropertyIndex;
109 }; // class BlurTwoPassFilter
111 } // namespace Internal
113 } // namespace Toolkit
117 #endif // __DALI_TOOLKIT_INTERNAL_BLUR_TWO_PASS_FILTER_H__