2 * Copyright (c) 2017 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/controls/buttons/button-devel.h>
20 #include <dali-toolkit/devel-api/image-loader/texture-manager.h>
22 #include "shared/view.h"
28 const char* BIG_TEST_IMAGE( DEMO_IMAGE_DIR "book-landscape-cover.jpg" );
30 const char * const APPLICATION_TITLE( "Image View URL" );
31 const char * const TOOLBAR_IMAGE( DEMO_IMAGE_DIR "top-bar.png" );
32 const char * const BUTTON_ICON( DEMO_IMAGE_DIR "icon-change.png" );
33 const char * const BUTTON_ICON_SELECTED( DEMO_IMAGE_DIR "icon-change-selected.png" );
35 const char* FILTER_FRAGMENT_SOURCE =
37 "precision highp float;\n"
38 "varying mediump vec2 vTexCoord;\n"
39 "uniform sampler2D sTexture;\n"
40 "uniform mediump float uDelta;\n"
43 " vec4 color = vec4(0.0);\n"
44 " vec2 texCoord = vTexCoord * 2. - 1.;\n"
45 " mat2 rotation = mat2(cos(uDelta), -sin(uDelta), sin(uDelta), cos(uDelta));"
46 " texCoord = (rotation * texCoord) * .5 + .5;\n"
47 " color += texture2D( sTexture, texCoord );\n"
48 " gl_FragColor = color;\n"
52 const char* DELTA_UNIFORM_NAME = "uDelta";
54 const Vector2 TARGET_SIZE(800.f, 800.f);
57 class ImageViewUrlApp : public ConnectionTracker
60 ImageViewUrlApp( Application& application )
61 : mApplication( application )
63 // Connect to the Application's Init signal
64 mApplication.InitSignal().Connect( this, &ImageViewUrlApp::Create );
67 ~ImageViewUrlApp() = default;
70 // The Init signal is received once (only) during the Application lifetime
71 void Create( Application& application )
73 // Get a handle to the stage
74 Stage stage = Stage::GetCurrent();
75 stage.KeyEventSignal().Connect(this, &ImageViewUrlApp::OnKeyEvent);
77 Toolkit::ToolBar toolBar;
78 Toolkit::Control background;
79 // Creates a default view with a default tool bar.
80 mContent = DemoHelper::CreateView( application,
87 // Add a button to switch the scene. (right of toolbar)
88 Toolkit::PushButton switchButton = Toolkit::PushButton::New();
89 switchButton.SetProperty( Toolkit::DevelButton::Property::UNSELECTED_BACKGROUND_VISUAL, BUTTON_ICON );
90 switchButton.SetProperty( Toolkit::DevelButton::Property::SELECTED_BACKGROUND_VISUAL, BUTTON_ICON_SELECTED );
91 switchButton.ClickedSignal().Connect( this, &ImageViewUrlApp::OnButtonClicked );
92 toolBar.AddControl( switchButton,
93 DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage,
94 Toolkit::Alignment::HorizontalRight,
95 DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
101 void CreateRenderTask()
103 auto rootActor = Stage::GetCurrent().GetRootLayer();
105 auto cameraActor = CameraActor::New(TARGET_SIZE);
106 cameraActor.SetParentOrigin(ParentOrigin::CENTER);
107 cameraActor.SetInvertYAxis(true);
108 rootActor.Add(cameraActor);
111 // create actor to render input with applied shader
112 mActorForInput = Toolkit::ImageView::New(BIG_TEST_IMAGE);
113 mActorForInput.SetParentOrigin(ParentOrigin::CENTER);
114 mActorForInput.SetSize(TARGET_SIZE);
115 Property::Map customShader;
116 customShader[Toolkit::Visual::Shader::Property::FRAGMENT_SHADER] = FILTER_FRAGMENT_SOURCE;
117 Property::Map visualMap;
118 visualMap.Insert(Toolkit::Visual::Property::SHADER, customShader);
119 mActorForInput.SetProperty(Toolkit::ImageView::Property::IMAGE, visualMap);
121 mDeltaPropertyIndex = mActorForInput.RegisterProperty(DELTA_UNIFORM_NAME, 0.f);
123 rootActor.Add(mActorForInput);
125 RenderTaskList taskList = Stage::GetCurrent().GetRenderTaskList();
127 // perform a horizontal blur targeting the internal buffer
128 auto renderTask = taskList.CreateTask();
129 renderTask.SetRefreshRate(RenderTask::REFRESH_ALWAYS);
130 renderTask.SetSourceActor(mActorForInput);
131 renderTask.SetExclusive(true);
132 renderTask.SetInputEnabled(false);
133 renderTask.SetClearColor(Vector4(1.,0.,0.,1.));
134 renderTask.SetClearEnabled(true);
135 renderTask.SetCameraActor(cameraActor);
137 mOutputTexture = Texture::New(TextureType::TEXTURE_2D,
139 unsigned(TARGET_SIZE.width),
140 unsigned(TARGET_SIZE.height));
141 auto framebuffer = FrameBuffer::New(TARGET_SIZE.width, TARGET_SIZE.height, Pixel::RGB888);
142 framebuffer.AttachColorTexture(mOutputTexture);
144 renderTask.SetFrameBuffer(framebuffer);
147 // animate the shader uniform
148 mAnimation = Animation::New(10.f);
150 mActorForInput.SetProperty( mDeltaPropertyIndex, 0.f );
151 mAnimation.AnimateTo( Property( mActorForInput, mDeltaPropertyIndex ), Math::PI * 2.f );
152 mAnimation.SetLooping(true);
159 auto url = Dali::Toolkit::TextureManager::AddTexture(mOutputTexture);
160 mImageView = Toolkit::ImageView::New(url);
162 mImageView.SetParentOrigin(ParentOrigin::CENTER);
163 mImageView.SetAnchorPoint(AnchorPoint::CENTER);
164 mContent.Add(mImageView);
167 bool OnButtonClicked(Toolkit::Button button)
169 if(mAnimation.GetState() == Animation::State::PLAYING)
180 void OnKeyEvent(const KeyEvent& event)
182 if(event.state == KeyEvent::Down)
184 if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
192 Application& mApplication;
194 Toolkit::ImageView mImageView;
195 Animation mAnimation;
196 Actor mActorForInput;
197 Property::Index mDeltaPropertyIndex;
198 Texture mOutputTexture;
201 void RunTest( Application& application )
203 ImageViewUrlApp test( application );
205 application.MainLoop();
208 // Entry point for Linux & Tizen applications
210 int DALI_EXPORT_API main( int argc, char **argv )
212 Application application = Application::New( &argc, &argv );
214 RunTest( application );