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>
26 #include "image-filter.h"
38 * A two pass blur filter, pass one performs a horizontal blur and pass two performs a
39 * vertical blur on the result of pass one.
41 class BlurTwoPassFilter : public ImageFilter
52 virtual ~BlurTwoPassFilter();
54 public: // From ImageFilter
55 /// @copydoc Dali::Toolkit::Internal::ImageFilter::Enable
56 virtual void Enable();
58 /// @copydoc Dali::Toolkit::Internal::ImageFilter::Disable
59 virtual void Disable();
61 /// @copydoc Dali::Toolkit::Internal::ImageFilter::Refresh
62 virtual void Refresh();
64 /// @copydoc Dali::Toolkit::Internal::ImageFilter::SetSize
65 virtual void SetSize( const Vector2& size );
68 * Get the property index that controls the strength of the blur applied to the image. Useful for animating this property.
69 * This property represents a value in the range [0.0 - 1.0] where 0.0 is no blur and 1.0 is full blur.
71 Property::Index GetBlurStrengthPropertyIndex() const {return mBlurStrengthPropertyIndex;}
74 * Retrieve the handle to the object in order to animate or constrain the blur strength property
75 * @return The hadnle to the object which blends the output image according to the blur strength
77 Handle GetHandleForAnimateBlurStrength();
82 * Setup render tasks for blur
84 void CreateRenderTasks();
87 BlurTwoPassFilter( const BlurTwoPassFilter& );
88 BlurTwoPassFilter& operator=( const BlurTwoPassFilter& );
90 private: // Attributes
92 // To perform horizontal blur from mInputImage to mImageForHorz
93 RenderTask mRenderTaskForHorz;
94 Toolkit::ImageView mActorForInput;
95 FrameBufferImage mImageForHorz;
97 // To perform vertical blur from mImageForHorz to mOutputImage
98 RenderTask mRenderTaskForVert;
99 Toolkit::ImageView mActorForHorz;
100 FrameBufferImage mBlurredImage;
102 // To blend the blurred image and input image according to the blur strength
103 RenderTask mRenderTaskForBlending;
104 Toolkit::ImageView mActorForBlending;
105 Actor mRootActorForBlending;
106 Property::Index mBlurStrengthPropertyIndex;
108 }; // class BlurTwoPassFilter
110 } // namespace Internal
112 } // namespace Toolkit
116 #endif // __DALI_TOOLKIT_INTERNAL_BLUR_TWO_PASS_FILTER_H__