2 * Copyright (c) 2014 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.
22 #include "shared/view.h"
24 #include <dali/dali.h>
25 #include <dali-toolkit/dali-toolkit.h>
33 const char * const TOOLBAR_IMAGE( DALI_IMAGE_DIR "top-bar.png" );
34 const char * const APPLICATION_TITLE_HIGHP( "Dissolve Effect(highp)" );
35 const char * const APPLICATION_TITLE_MEDIUMP( "Dissolve Effect(mediump)" );
36 const char * const EFFECT_HIGHP_IMAGE( DALI_IMAGE_DIR "icon-highp.png" );
37 const char * const EFFECT_MEDIUMP_IMAGE( DALI_IMAGE_DIR "icon-mediump.png" );
38 const char * const PLAY_ICON( DALI_IMAGE_DIR "icon-play.png" );
39 const char * const STOP_ICON( DALI_IMAGE_DIR "icon-stop.png" );
41 const char* IMAGES[] =
43 DALI_IMAGE_DIR "gallery-large-1.jpg",
44 DALI_IMAGE_DIR "gallery-large-2.jpg",
45 DALI_IMAGE_DIR "gallery-large-3.jpg",
46 DALI_IMAGE_DIR "gallery-large-4.jpg",
47 DALI_IMAGE_DIR "gallery-large-5.jpg",
48 DALI_IMAGE_DIR "gallery-large-6.jpg",
49 DALI_IMAGE_DIR "gallery-large-7.jpg",
50 DALI_IMAGE_DIR "gallery-large-8.jpg",
51 DALI_IMAGE_DIR "gallery-large-9.jpg",
52 DALI_IMAGE_DIR "gallery-large-10.jpg",
53 DALI_IMAGE_DIR "gallery-large-11.jpg",
54 DALI_IMAGE_DIR "gallery-large-12.jpg",
55 DALI_IMAGE_DIR "gallery-large-13.jpg",
56 DALI_IMAGE_DIR "gallery-large-14.jpg",
57 DALI_IMAGE_DIR "gallery-large-15.jpg",
58 DALI_IMAGE_DIR "gallery-large-16.jpg",
59 DALI_IMAGE_DIR "gallery-large-17.jpg",
60 DALI_IMAGE_DIR "gallery-large-18.jpg",
61 DALI_IMAGE_DIR "gallery-large-19.jpg",
62 DALI_IMAGE_DIR "gallery-large-20.jpg",
63 DALI_IMAGE_DIR "gallery-large-21.jpg",
66 const int NUM_IMAGES( sizeof(IMAGES) / sizeof(IMAGES[0]) );
68 // The duration of the current image staying on screen when slideshow is on
69 const int VIEWINGTIME = 2000; // 2 seconds
71 const float TRANSITION_DURATION = 2.5f; //2.5 second
73 const float INITIAL_DEPTH = -10.0f;
76 * @brief Load an image, scaled-down to no more than the stage dimensions.
78 * Uses image scaling mode ImageAttributes::ScaleToFill to resize the image at
79 * load time to cover the entire stage with pixels with no borders,
80 * and filter mode ImageAttributes::BoxThenLinear to sample the image with
83 ResourceImage LoadStageFillingImage( const char * const imagePath )
85 Size stageSize = Stage::GetCurrent().GetSize();
86 ImageAttributes attributes;
87 attributes.SetSize( stageSize.x, stageSize.y );
88 attributes.SetFilterMode( ImageAttributes::BoxThenLinear );
89 attributes.SetScalingMode( ImageAttributes::ScaleToFill );
90 return ResourceImage::New( imagePath, attributes );
95 class DissolveEffectApp : public ConnectionTracker
101 * @param application class, stored as reference
103 DissolveEffectApp( Application& application );
105 ~DissolveEffectApp();
110 * This method gets called once the main loop of application is up and running
112 void OnInit( Application& application );
114 * PanGesture callback. This method gets called when the pan gesture is detected.
115 * @param[in] actor The actor receiving the pan gesture.
116 * @param[in] gesture The detected pan gesture.
118 void OnPanGesture( Actor actor, const PanGesture& gesture );
121 * Set up the animations for transition
122 * @param[in] position The point ( locates within rectange {(0,0),(0,1),(1,0),(1,1)} ) passing through the central line of the dissolve effect
123 * @param[in] displacement The direction of the central line of the dissolve effect
125 void StartTransition(Vector2 position, Vector2 displacement);
127 * Callback function of effect-switch button
128 * Change the precision of the effect shader when the effect button is clicked
129 * @param[in] button The handle of the clicked button
131 bool OnEffectButtonClicked( Toolkit::Button button );
133 * Callback function of slideshow button
134 * Start or stop the automatical image display when the slideshow button is clicked
135 * @param[in] button The handle of the clicked button
137 bool OnSildeshowButtonClicked( Toolkit::Button button );
139 * Callback function of cube transition completed signal
140 * @param[in] effect The cube effect used for the transition
141 * @param[in] imageActor The target imageActor of the completed transition
143 void OnTransitionCompleted(Animation& source);
145 * Callback function of timer tick
146 * The timer is used to count the image display duration after cube transition in slideshow,
151 * Main key event handler
153 void OnKeyEvent(const KeyEvent& event);
156 Application& mApplication;
158 Toolkit::ToolBar mToolBar;
162 ImageActor mCurrentImage;
163 ImageActor mNextImage;
165 Constraint mSizeConstraint;
167 Toolkit::DissolveEffect mCurrentImageEffect;
168 Toolkit::DissolveEffect mNextImageEffect;
169 bool mUseHighPrecision;
170 Animation mAnimation;
172 PanGestureDetector mPanGestureDetector;
178 unsigned int mCentralLineIndex;
182 Toolkit::PushButton mPlayStopButton;
186 Toolkit::PushButton mEffectChangeButton;
189 DissolveEffectApp::DissolveEffectApp( Application& application )
190 : mApplication( application ),
192 mUseHighPrecision(true),
193 mIsTransiting( false ),
195 mTimerReady( false ),
196 mCentralLineIndex( 0 )
198 mApplication.InitSignal().Connect( this, &DissolveEffectApp::OnInit );
201 DissolveEffectApp::~DissolveEffectApp()
206 void DissolveEffectApp::OnInit( Application& application )
208 Stage::GetCurrent().KeyEventSignal().Connect(this, &DissolveEffectApp::OnKeyEvent);
210 // Creates a default view with a default tool bar, the view is added to the stage.
211 mContent = DemoHelper::CreateView( application, mView,mToolBar, "", TOOLBAR_IMAGE, "" );
213 // Add an effect-changing button on the right of the tool bar.
214 mIconHighP = ResourceImage::New( EFFECT_HIGHP_IMAGE );
215 mIconMediumP = ResourceImage::New( EFFECT_MEDIUMP_IMAGE );
216 mEffectChangeButton = Toolkit::PushButton::New();
217 mEffectChangeButton.SetBackgroundImage(mIconHighP);
218 mEffectChangeButton.ClickedSignal().Connect( this, &DissolveEffectApp::OnEffectButtonClicked );
219 mToolBar.AddControl( mEffectChangeButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalRight, DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
221 // Add title to the tool bar.
224 // Add an slide-show button on the right of the title
225 mIconPlay = ResourceImage::New( PLAY_ICON );
226 mIconStop = ResourceImage::New( STOP_ICON );
227 mPlayStopButton = Toolkit::PushButton::New();
228 mPlayStopButton.SetBackgroundImage( mIconPlay );
229 mPlayStopButton.ClickedSignal().Connect( this, &DissolveEffectApp::OnSildeshowButtonClicked );
230 mToolBar.AddControl( mPlayStopButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalCenter, DemoHelper::DEFAULT_PLAY_PADDING );
232 // use pan gesture to detect the cursor or finger movement
233 mPanGestureDetector = PanGestureDetector::New();
234 mPanGestureDetector.DetectedSignal().Connect( this, &DissolveEffectApp::OnPanGesture );
236 // create the dissolve effect object
237 mCurrentImageEffect = Toolkit::DissolveEffect::New(mUseHighPrecision);
238 mNextImageEffect = Toolkit::DissolveEffect::New(mUseHighPrecision);
240 mViewTimer = Timer::New( VIEWINGTIME );
241 mViewTimer.TickSignal().Connect( this, &DissolveEffectApp::OnTimerTick );
244 // Set size to stage size to avoid seeing a black border on transition
245 mParent = Actor::New();
246 mParent.SetSize( Stage::GetCurrent().GetSize() );
247 mParent.SetPositionInheritanceMode( USE_PARENT_POSITION );
248 mContent.Add( mParent );
250 mSizeConstraint= Constraint::New<Vector3>( Actor::Property::SCALE, LocalSource( Actor::Property::SIZE ), ParentSource( Actor::Property::SIZE ), ScaleToFitKeepAspectRatioConstraint() );
252 // show the first image
253 mCurrentImage = ImageActor::New( LoadStageFillingImage( IMAGES[mIndex] ) );
254 mCurrentImage.SetPositionInheritanceMode(USE_PARENT_POSITION_PLUS_LOCAL_POSITION);
255 mCurrentImage.ApplyConstraint( mSizeConstraint );
256 mParent.Add( mCurrentImage );
258 mPanGestureDetector.Attach( mCurrentImage );
261 // signal handler, called when the pan gesture is detected
262 void DissolveEffectApp::OnPanGesture( Actor actor, const PanGesture& gesture )
264 // does not response when the animation has not finished
265 if( mIsTransiting || mSlideshow )
270 if( gesture.state == Gesture::Continuing )
272 if( gesture.displacement.x < 0)
274 mIndex = (mIndex + 1)%NUM_IMAGES;
278 mIndex = (mIndex + NUM_IMAGES -1)%NUM_IMAGES;
281 Image image = LoadStageFillingImage( IMAGES[ mIndex ] );
282 mNextImage = ImageActor::New( image );
283 mNextImage.SetPositionInheritanceMode(USE_PARENT_POSITION_PLUS_LOCAL_POSITION);
284 mNextImage.ApplyConstraint( mSizeConstraint );
285 mNextImage.SetZ(INITIAL_DEPTH);
286 mParent.Add( mNextImage );
287 Vector2 size = Vector2( mCurrentImage.GetCurrentSize() );
288 StartTransition( gesture.position / size, gesture.displacement * Vector2(1.0, size.x/size.y));
292 void DissolveEffectApp::StartTransition(Vector2 position, Vector2 displacement)
294 mAnimation = Animation::New(TRANSITION_DURATION);
296 mCurrentImageEffect.SetCentralLine(position,displacement);
297 mCurrentImageEffect.SetDistortion(0.0f);
298 mCurrentImage.SetShaderEffect(mCurrentImageEffect);
299 mAnimation.AnimateTo( Property(mCurrentImageEffect, mCurrentImageEffect.GetDistortionPropertyName()), 1.0f, AlphaFunctions::Linear );
301 mNextImage.SetOpacity(0.0f);
302 mAnimation.OpacityTo( mNextImage, 1.0, AlphaFunctions::Linear );
304 if(mUseHighPrecision)
306 mNextImageEffect.SetCentralLine(position,-displacement);
307 mNextImageEffect.SetDistortion(1.0f);
308 mNextImage.SetShaderEffect(mNextImageEffect);
309 mAnimation.AnimateTo( Property(mNextImageEffect, mNextImageEffect.GetDistortionPropertyName()), 0.0f, AlphaFunctions::Linear );
313 mAnimation.MoveTo(mNextImage, Vector3(0.0f, 0.0f, 0.0f), AlphaFunctions::Linear);
316 mAnimation.FinishedSignal().Connect( this, &DissolveEffectApp::OnTransitionCompleted );
318 mIsTransiting = true;
321 void DissolveEffectApp::OnKeyEvent(const KeyEvent& event)
323 if(event.state == KeyEvent::Down)
325 if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
332 bool DissolveEffectApp::OnEffectButtonClicked( Toolkit::Button button )
334 mUseHighPrecision = !mUseHighPrecision;
335 mCurrentImageEffect = Toolkit::DissolveEffect::New(mUseHighPrecision);
336 if(mUseHighPrecision)
338 mEffectChangeButton.SetBackgroundImage(mIconHighP);
342 mEffectChangeButton.SetBackgroundImage(mIconMediumP);
348 bool DissolveEffectApp::OnSildeshowButtonClicked( Toolkit::Button button )
350 mSlideshow = !mSlideshow;
353 mPlayStopButton.SetBackgroundImage( mIconStop );
354 mPanGestureDetector.Detach( mParent );
360 mPlayStopButton.SetBackgroundImage( mIconPlay );
362 mPanGestureDetector.Attach( mParent );
367 void DissolveEffectApp::OnTransitionCompleted( Animation& source )
369 mCurrentImage.RemoveShaderEffect();
370 mNextImage.RemoveShaderEffect();
371 mParent.Remove( mCurrentImage );
372 mPanGestureDetector.Detach( mCurrentImage );
373 mCurrentImage = mNextImage;
374 mPanGestureDetector.Attach( mCurrentImage );
375 mIsTransiting = false;
384 bool DissolveEffectApp::OnTimerTick()
389 mIndex = (mIndex + 1)%NUM_IMAGES;
390 Image image = LoadStageFillingImage( IMAGES[ mIndex ] );
391 mNextImage = ImageActor::New( image );
392 mNextImage.SetPositionInheritanceMode(USE_PARENT_POSITION_PLUS_LOCAL_POSITION);
393 mNextImage.ApplyConstraint( mSizeConstraint );
394 mNextImage.SetZ(INITIAL_DEPTH);
395 mParent.Add( mNextImage );
396 switch( mCentralLineIndex%4 )
400 StartTransition(Vector2(1.0f,0.5f), Vector2(-1.0f, 0.0f));
405 StartTransition(Vector2(0.5f,0.0f), Vector2(0.0f, 1.0f));
410 StartTransition(Vector2(0.0f,0.5f), Vector2(1.0f, 0.0f));
415 StartTransition(Vector2(0.5f,1.0f), Vector2(0.0f, -1.0f));
422 return false; //return false to stop the timer
425 // Entry point for Linux & Tizen applications
426 int main( int argc, char **argv )
428 Application application = Application::New( &argc, &argv );
429 DissolveEffectApp test( application );
430 application.MainLoop();