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 ),
62 mDeltaPropertyIndex( Property::INVALID_INDEX )
64 // Connect to the Application's Init signal
65 mApplication.InitSignal().Connect( this, &ImageViewUrlApp::Create );
68 ~ImageViewUrlApp() = default;
71 // The Init signal is received once (only) during the Application lifetime
72 void Create( Application& application )
74 // Get a handle to the stage
75 Stage stage = Stage::GetCurrent();
76 stage.KeyEventSignal().Connect(this, &ImageViewUrlApp::OnKeyEvent);
78 Toolkit::ToolBar toolBar;
79 Toolkit::Control background;
80 // Creates a default view with a default tool bar.
81 mContent = DemoHelper::CreateView( application,
88 // Add a button to switch the scene. (right of toolbar)
89 Toolkit::PushButton switchButton = Toolkit::PushButton::New();
90 switchButton.SetProperty( Toolkit::DevelButton::Property::UNSELECTED_BACKGROUND_VISUAL, BUTTON_ICON );
91 switchButton.SetProperty( Toolkit::DevelButton::Property::SELECTED_BACKGROUND_VISUAL, BUTTON_ICON_SELECTED );
92 switchButton.ClickedSignal().Connect( this, &ImageViewUrlApp::OnButtonClicked );
93 toolBar.AddControl( switchButton,
94 DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage,
95 Toolkit::Alignment::HorizontalRight,
96 DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
102 void CreateRenderTask()
104 auto rootActor = Stage::GetCurrent().GetRootLayer();
106 auto cameraActor = CameraActor::New(TARGET_SIZE);
107 cameraActor.SetParentOrigin(ParentOrigin::CENTER);
108 cameraActor.SetInvertYAxis(true);
109 rootActor.Add(cameraActor);
112 // create actor to render input with applied shader
113 mActorForInput = Toolkit::ImageView::New(BIG_TEST_IMAGE);
114 mActorForInput.SetParentOrigin(ParentOrigin::CENTER);
115 mActorForInput.SetSize(TARGET_SIZE);
116 Property::Map customShader;
117 customShader[Toolkit::Visual::Shader::Property::FRAGMENT_SHADER] = FILTER_FRAGMENT_SOURCE;
118 Property::Map visualMap;
119 visualMap.Insert(Toolkit::Visual::Property::SHADER, customShader);
120 mActorForInput.SetProperty(Toolkit::ImageView::Property::IMAGE, visualMap);
122 mDeltaPropertyIndex = mActorForInput.RegisterProperty(DELTA_UNIFORM_NAME, 0.f);
124 rootActor.Add(mActorForInput);
126 RenderTaskList taskList = Stage::GetCurrent().GetRenderTaskList();
128 // perform a horizontal blur targeting the internal buffer
129 auto renderTask = taskList.CreateTask();
130 renderTask.SetRefreshRate(RenderTask::REFRESH_ALWAYS);
131 renderTask.SetSourceActor(mActorForInput);
132 renderTask.SetExclusive(true);
133 renderTask.SetInputEnabled(false);
134 renderTask.SetClearColor(Vector4(1.,0.,0.,1.));
135 renderTask.SetClearEnabled(true);
136 renderTask.SetCameraActor(cameraActor);
138 mOutputTexture = Texture::New(TextureType::TEXTURE_2D,
140 unsigned(TARGET_SIZE.width),
141 unsigned(TARGET_SIZE.height));
142 auto framebuffer = FrameBuffer::New(TARGET_SIZE.width, TARGET_SIZE.height, FrameBuffer::Attachment::NONE );
143 framebuffer.AttachColorTexture(mOutputTexture);
145 renderTask.SetFrameBuffer(framebuffer);
148 // animate the shader uniform
149 mAnimation = Animation::New(10.f);
151 mActorForInput.SetProperty( mDeltaPropertyIndex, 0.f );
152 mAnimation.AnimateTo( Property( mActorForInput, mDeltaPropertyIndex ), Math::PI * 2.f );
153 mAnimation.SetLooping(true);
160 auto url = Dali::Toolkit::TextureManager::AddTexture(mOutputTexture);
161 mImageView = Toolkit::ImageView::New(url);
163 mImageView.SetParentOrigin(ParentOrigin::CENTER);
164 mImageView.SetAnchorPoint(AnchorPoint::CENTER);
165 mContent.Add(mImageView);
168 bool OnButtonClicked(Toolkit::Button button)
170 if(mAnimation.GetState() == Animation::State::PLAYING)
181 void OnKeyEvent(const KeyEvent& event)
183 if(event.state == KeyEvent::Down)
185 if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
193 Application& mApplication;
195 Toolkit::ImageView mImageView;
196 Animation mAnimation;
197 Actor mActorForInput;
198 Property::Index mDeltaPropertyIndex;
199 Texture mOutputTexture;
202 int DALI_EXPORT_API main( int argc, char **argv )
204 Application application = Application::New( &argc, &argv );
205 ImageViewUrlApp test( application );
206 application.MainLoop();