2 * Copyright (c) 2018 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dali-toolkit/dali-toolkit.h>
19 #include <dali-toolkit/devel-api/image-loader/texture-manager.h>
20 #include <dali-toolkit/devel-api/visuals/visual-properties-devel.h>
26 const char* const IMAGE_PATH ( DEMO_IMAGE_DIR "gallery-large-20.jpg" );
29 class ImageViewAlphaBlendApp : public ConnectionTracker
32 ImageViewAlphaBlendApp( Application& application )
33 : mApplication( application ),
36 // Connect to the Application's Init signal
37 mApplication.InitSignal().Connect( this, &ImageViewAlphaBlendApp::Create );
40 ~ImageViewAlphaBlendApp()
42 // Nothing to do here;
46 // The Init signal is received once (only) during the Application lifetime
47 void Create( Application& application )
49 // Get a handle to the stage
50 Stage stage = Stage::GetCurrent();
51 stage.KeyEventSignal().Connect(this, &ImageViewAlphaBlendApp::OnKeyEvent);
53 auto green0 = Vector4( 0.f, 1.f, 0.f, 0.25f );
54 auto green1 = Vector4( 0.f, 0.25f, 0.f, 0.25f );
55 auto redGreen0 = CreateTexture( Color::RED, green0 );
56 auto redGreen1 = CreateTexture( Color::RED, green1 );
57 float imageSize = 512.f;
59 Toolkit::ImageView imageView0 = CreateImageView( IMAGE_PATH );
60 imageView0.SetSize(imageSize, imageSize);
61 imageView0.SetParentOrigin( ParentOrigin::CENTER );
62 imageView0.SetY( -imageSize*0.5f );
63 stage.Add(imageView0);
64 Toolkit::ImageView imageView1 = CreateImageView( redGreen0 );
65 imageView1.SetParentOrigin( ParentOrigin::CENTER );
66 imageView1.SetSize(imageSize, imageSize);
67 imageView0.Add(imageView1);
69 Toolkit::ImageView imageView2 = CreateImageView( IMAGE_PATH );
70 imageView2.SetSize(imageSize, imageSize);
71 imageView2.SetParentOrigin( ParentOrigin::CENTER );
72 imageView2.SetY( imageSize*0.5f );
73 stage.Add(imageView2);
74 Toolkit::ImageView imageView3 = CreateImageView( redGreen1);
75 imageView3.SetParentOrigin( ParentOrigin::CENTER );
76 imageView3.SetSize(imageSize, imageSize);
77 imageView2.Add(imageView3);
79 imageView2.SetProperty( Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA, true );
80 imageView3.SetProperty( Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA, true );
82 Animation animation = Animation::New( 10.f );
83 animation.AnimateTo(Property(imageView0, Actor::Property::COLOR), Vector4(1.0f, 1.0f, 1.0f, 0.0f), AlphaFunction::BOUNCE, TimePeriod( 2.f, 8.f ));
84 animation.AnimateTo(Property(imageView2, Actor::Property::COLOR), Vector4(1.0f, 1.0f, 1.0f, 0.0f), AlphaFunction::BOUNCE, TimePeriod( 2.f, 8.f ));
85 animation.SetLooping( true );
89 void OnKeyEvent(const KeyEvent& event)
91 if(event.state == KeyEvent::Down)
93 if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
100 std::string CreateTexture( const Vector4& color1, const Vector4& color2 )
102 const auto width = 2u;
103 const auto height = 1u;
104 auto size = width * height * 4;
105 auto pixelBuffer = new unsigned char[size];
106 pixelBuffer[0] = 0xFF * color1.x;
107 pixelBuffer[1] = 0xFF * color1.y;
108 pixelBuffer[2] = 0xFF * color1.z;
109 pixelBuffer[3] = 0xFF * color1.w;
110 pixelBuffer[4] = 0xFF * color2.x;
111 pixelBuffer[5] = 0xFF * color2.y;
112 pixelBuffer[6] = 0xFF * color2.z;
113 pixelBuffer[7] = 0xFF * color2.w;
115 auto pixelData = PixelData::New(pixelBuffer, size, width, height, Pixel::RGBA8888, PixelData::ReleaseFunction::DELETE_ARRAY);
116 auto texture = Texture::New( TextureType::TEXTURE_2D, Pixel::RGBA8888, width, height );
117 texture.Upload(pixelData);
119 return Toolkit::TextureManager::AddTexture(texture);
122 template<typename TextT>
123 Toolkit::ImageView CreateImageView(TextT&& filename)
125 auto imageView = Toolkit::ImageView::New();
127 Property::Map propertyMap;
128 propertyMap.Insert(Toolkit::ImageVisual::Property::URL, std::forward<TextT>(filename));
129 propertyMap.Insert(Toolkit::Visual::Property::TYPE, Toolkit::Visual::IMAGE);
130 propertyMap.Insert(Toolkit::DevelVisual::Property::VISUAL_FITTING_MODE, Toolkit::DevelVisual::FILL);
131 imageView.SetProperty(Toolkit::ImageView::Property::IMAGE, propertyMap );
137 Application& mApplication;
141 int DALI_EXPORT_API main( int argc, char **argv )
143 Application application = Application::New( &argc, &argv );
144 ImageViewAlphaBlendApp test( application );
145 application.MainLoop();