Merge remote-tracking branch 'origin/tizen' into new_text
[platform/core/uifw/dali-demo.git] / examples / motion-stretch / motion-stretch-example.cpp
1 /*
2  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
3  *
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
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
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.
15  *
16  */
17
18 #include <sstream>
19 #include <iomanip>
20
21 #include "shared/view.h"
22 #include <dali/dali.h>
23 #include <dali-toolkit/dali-toolkit.h>
24
25 using namespace Dali;
26 using namespace Dali::Toolkit;
27
28
29
30 namespace // unnamed namespace
31 {
32
33 ////////////////////////////////////////////////////
34 //
35 // Demo setup parameters
36 //
37
38 const float MOTION_STRETCH_ACTOR_WIDTH = 256;                                          // actor size on screen
39 const float MOTION_STRETCH_ACTOR_HEIGHT = 256;                                         // ""
40
41 const int MOTION_STRETCH_NUM_ACTOR_IMAGES = 5;
42 const char* MOTION_STRETCH_ACTOR_IMAGE1( DALI_IMAGE_DIR "image-with-border-1.jpg" );
43 const char* MOTION_STRETCH_ACTOR_IMAGE2( DALI_IMAGE_DIR "image-with-border-2.jpg" );
44 const char* MOTION_STRETCH_ACTOR_IMAGE3( DALI_IMAGE_DIR "image-with-border-3.jpg" );
45 const char* MOTION_STRETCH_ACTOR_IMAGE4( DALI_IMAGE_DIR "image-with-border-4.jpg" );
46 const char* MOTION_STRETCH_ACTOR_IMAGE5( DALI_IMAGE_DIR "image-with-border-5.jpg" );
47
48 const char* MOTION_STRETCH_ACTOR_IMAGES[] = {
49   MOTION_STRETCH_ACTOR_IMAGE1,
50   MOTION_STRETCH_ACTOR_IMAGE2,
51   MOTION_STRETCH_ACTOR_IMAGE3,
52   MOTION_STRETCH_ACTOR_IMAGE4,
53   MOTION_STRETCH_ACTOR_IMAGE5,
54 };
55
56 const int NUM_ACTOR_ANIMATIONS = 4;
57 const int NUM_CAMERA_ANIMATIONS = 2;
58
59
60 const char* BACKGROUND_IMAGE_PATH = DALI_IMAGE_DIR "background-default.png";
61
62 const char* TOOLBAR_IMAGE( DALI_IMAGE_DIR "top-bar.png" );
63 const char* LAYOUT_IMAGE( DALI_IMAGE_DIR "icon-change.png" );
64 const char* APPLICATION_TITLE( "Motion Stretch" );
65 const char* EFFECTS_OFF_ICON( DALI_IMAGE_DIR "icon-effects-off.png" );
66 const char* EFFECTS_ON_ICON( DALI_IMAGE_DIR "icon-effects-on.png" );
67
68 // These values depend on the button background image
69 const Vector4 BUTTON_IMAGE_BORDER( Vector4::ONE * 3.0f );
70
71 const float UI_MARGIN = 4.0f;                              ///< Screen Margin for placement of UI buttons
72
73 const Vector3 BUTTON_SIZE_CONSTRAINT( 0.24f, 0.09f, 1.0f );
74
75 // move this button down a bit so it is visible on target and not covered up by toolbar
76 const float BUTTON_TITLE_LABEL_Y_OFFSET = 0.05f;
77
78 const float ORIENTATION_DURATION = 0.5f;                  ///< Time to rotate to new orientation.
79 } // unnamed namespace
80
81
82
83
84 //
85 class MotionStretchExampleApp : public ConnectionTracker
86 {
87 public:
88
89   /**
90      * DeviceOrientation describes the four different
91      * orientations the device can be in based on accelerometer reports.
92      */
93   enum DeviceOrientation
94   {
95     PORTRAIT = 0,
96     LANDSCAPE = 90,
97     PORTRAIT_INVERSE = 180,
98     LANDSCAPE_INVERSE = 270
99   };
100
101   /**
102    * Constructor
103    * @param application class, stored as reference
104    */
105   MotionStretchExampleApp(Application &app)
106   : mApplication(app),
107     mActorEffectsEnabled(false),
108     mCurrentActorAnimation(0),
109     mCurrentImage(0)
110   {
111     // Connect to the Application's Init signal
112     app.InitSignal().Connect(this, &MotionStretchExampleApp::OnInit);
113   }
114
115   ~MotionStretchExampleApp()
116   {
117     // Nothing to do here; everything gets deleted automatically
118   }
119
120   /**
121    * This method gets called once the main loop of application is up and running
122    */
123   void OnInit(Application& app)
124   {
125     // The Init signal is received once (only) during the Application lifetime
126
127     Stage::GetCurrent().KeyEventSignal().Connect(this, &MotionStretchExampleApp::OnKeyEvent);
128
129     // Creates a default view with a default tool bar.
130     // The view is added to the stage.
131     mContentLayer = DemoHelper::CreateView( mApplication,
132                                             mView,
133                                             mToolBar,
134                                             BACKGROUND_IMAGE_PATH,
135                                             TOOLBAR_IMAGE,
136                                             APPLICATION_TITLE );
137
138     //Add an slideshow icon on the right of the title
139     mIconEffectsOff = ResourceImage::New( EFFECTS_OFF_ICON );
140     mIconEffectsOn = ResourceImage::New( EFFECTS_ON_ICON );
141     mActorEffectsButton = Toolkit::PushButton::New();
142     mActorEffectsButton.SetBackgroundImage( mIconEffectsOff );
143     mActorEffectsButton.ClickedSignal().Connect( this, &MotionStretchExampleApp::OnEffectButtonClicked );
144     mToolBar.AddControl( mActorEffectsButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalCenter, DemoHelper::DEFAULT_PLAY_PADDING );
145
146     // Creates a mode button.
147     // Create a effect toggle button. (right of toolbar)
148     Image imageLayout = ResourceImage::New( LAYOUT_IMAGE );
149     Toolkit::PushButton layoutButton = Toolkit::PushButton::New();
150     layoutButton.SetBackgroundImage(imageLayout);
151     layoutButton.ClickedSignal().Connect( this, &MotionStretchExampleApp::OnLayoutButtonClicked);
152     layoutButton.SetLeaveRequired( true );
153     mToolBar.AddControl( layoutButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalRight, DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
154
155     // Input
156     mTapGestureDetector = TapGestureDetector::New();
157     mTapGestureDetector.Attach( mContentLayer );
158     mTapGestureDetector.DetectedSignal().Connect( this, &MotionStretchExampleApp::OnTap );
159
160     // set initial orientation
161     Dali::Window winHandle = app.GetWindow();
162     winHandle.AddAvailableOrientation( Dali::Window::PORTRAIT );
163     winHandle.AddAvailableOrientation( Dali::Window::LANDSCAPE );
164     winHandle.AddAvailableOrientation( Dali::Window::PORTRAIT_INVERSE  );
165     winHandle.AddAvailableOrientation( Dali::Window::LANDSCAPE_INVERSE );
166
167     app.GetOrientation().ChangedSignal().Connect( this, &MotionStretchExampleApp::OnOrientationChanged );
168     unsigned int degrees = app.GetOrientation().GetDegrees();
169     Rotate( static_cast< DeviceOrientation >( degrees ) );
170
171
172     ///////////////////////////////////////////////////////
173     //
174     // Motion stretched actor
175     //
176
177     Image image = ResourceImage::New( MOTION_STRETCH_ACTOR_IMAGE1 );
178     mMotionStretchImageActor = ImageActor::New(image);
179     mMotionStretchImageActor.SetParentOrigin( ParentOrigin::CENTER );
180     mMotionStretchImageActor.SetAnchorPoint( AnchorPoint::CENTER );
181     mMotionStretchImageActor.SetSize(MOTION_STRETCH_ACTOR_WIDTH, MOTION_STRETCH_ACTOR_HEIGHT);
182
183     mContentLayer.Add( mMotionStretchImageActor );
184
185     // Create shader used for doing motion stretch
186     mMotionStretchEffect = MotionStretchEffect::Apply(mMotionStretchImageActor);
187   }
188
189   //////////////////////////////////////////////////////////////
190   //
191   // Device Orientation Support
192   //
193   //
194
195   void OnOrientationChanged( Orientation orientation )
196   {
197     unsigned int degrees = orientation.GetDegrees();
198     Rotate( static_cast< DeviceOrientation >( degrees ) );
199   }
200
201   void Rotate( DeviceOrientation orientation )
202   {
203     // Resize the root actor
204     Vector2 stageSize = Stage::GetCurrent().GetSize();
205     Vector2 targetSize = stageSize;
206     if( orientation == LANDSCAPE ||
207         orientation == LANDSCAPE_INVERSE )
208     {
209       targetSize = Vector2( stageSize.y, stageSize.x );
210     }
211
212     if( mOrientation != orientation )
213     {
214       mOrientation = orientation;
215
216       // check if actor is on stage
217       if( mView.GetParent() )
218       {
219         // has parent so we expect it to be on stage, start animation
220         mRotateAnimation = Animation::New( ORIENTATION_DURATION );
221         mRotateAnimation.RotateTo( mView, Degree( -orientation ), Vector3::ZAXIS, AlphaFunctions::EaseOut );
222         mRotateAnimation.Resize( mView, targetSize.width, targetSize.height );
223         mRotateAnimation.Play();
224       }
225       else
226       {
227         // set the rotation to match the orientation
228         mView.SetRotation( Degree( -orientation ), Vector3::ZAXIS );
229         mView.SetSize( targetSize );
230       }
231     }
232     else
233     {
234       // for first time just set size
235       mView.SetSize( targetSize );
236     }
237   }
238
239   //////////////////////////////////////////////////////////////
240   //
241   // Actor Animation
242   //
243   //
244
245   // move to point on screen that was tapped
246   void OnTap( Actor actor, const TapGesture& tapGesture )
247   {
248     Vector3 destPos;
249     float originOffsetX, originOffsetY;
250
251     // rotate offset (from top left origin to centre) into actor space
252     Vector2 stageSize = Dali::Stage::GetCurrent().GetSize();
253     actor.ScreenToLocal(originOffsetX, originOffsetY, stageSize.width * 0.5f, stageSize.height * 0.5f);
254
255     // get dest point in local actor space
256     destPos.x = tapGesture.localPoint.x - originOffsetX;
257     destPos.y = tapGesture.localPoint.y - originOffsetY;
258     destPos.z = 0.0f;
259
260     float animDuration = 0.5f;
261     mActorTapMovementAnimation = Animation::New( animDuration );
262     if ( mMotionStretchImageActor )
263     {
264       mActorTapMovementAnimation.AnimateTo( Property(mMotionStretchImageActor, Actor::Property::Position), destPos, AlphaFunctions::EaseInOutSine, TimePeriod(animDuration) );
265     }
266     mActorTapMovementAnimation.SetEndAction( Animation::Bake );
267     mActorTapMovementAnimation.Play();
268
269
270     // perform some spinning etc
271     if(mActorEffectsEnabled)
272     {
273       switch(mCurrentActorAnimation)
274       {
275         // spin around y
276         case 0:
277         {
278           float animDuration = 1.0f;
279           mActorAnimation = Animation::New(animDuration);
280           mActorAnimation.RotateBy(mMotionStretchImageActor, Degree(720), Vector3::YAXIS, AlphaFunctions::EaseInOut);
281           mActorAnimation.SetEndAction( Animation::Bake );
282           mActorAnimation.Play();
283         }
284         break;
285
286         // spin around z
287         case 1:
288         {
289           float animDuration = 1.0f;
290           mActorAnimation = Animation::New(animDuration);
291           mActorAnimation.RotateBy(mMotionStretchImageActor, Degree(720), Vector3::ZAXIS, AlphaFunctions::EaseInOut);
292           mActorAnimation.SetEndAction( Animation::Bake );
293           mActorAnimation.Play();
294         }
295         break;
296
297         // spin around y and z
298         case 2:
299         {
300           float animDuration = 1.0f;
301           mActorAnimation = Animation::New(animDuration);
302           mActorAnimation.RotateBy(mMotionStretchImageActor, Degree(360), Vector3::YAXIS, AlphaFunctions::EaseInOut);
303           mActorAnimation.RotateBy(mMotionStretchImageActor, Degree(360), Vector3::ZAXIS, AlphaFunctions::EaseInOut);
304           mActorAnimation.SetEndAction( Animation::Bake );
305           mActorAnimation.Play();
306         }
307         break;
308
309         // scale
310         case 3:
311         {
312           float animDuration = 1.0f;
313           mActorAnimation = Animation::New(animDuration);
314           mActorAnimation.ScaleBy(mMotionStretchImageActor, Vector3(2.0f, 2.0f, 2.0f), AlphaFunctions::Bounce, 0.0f, 1.0f);
315           mActorAnimation.SetEndAction( Animation::Bake );
316           mActorAnimation.Play();
317         }
318         break;
319
320         default:
321           break;
322       }
323
324       mCurrentActorAnimation++;
325       if(NUM_ACTOR_ANIMATIONS == mCurrentActorAnimation)
326       {
327         mCurrentActorAnimation = 0;
328       }
329     }
330   }
331
332   void ToggleActorEffects()
333   {
334     if(!mActorEffectsEnabled)
335     {
336       mActorEffectsEnabled = true;
337       mActorEffectsButton.SetBackgroundImage( mIconEffectsOn );
338     }
339     else
340     {
341       mActorEffectsEnabled = false;
342       mActorEffectsButton.SetBackgroundImage( mIconEffectsOff );
343     }
344   }
345
346   //////////////////////////////////////////////////////////////
347   //
348   // Input handlers
349   //
350   //
351
352   bool OnLayoutButtonClicked( Toolkit::Button button )
353   {
354     ChangeImage();
355     return true;
356   }
357
358   bool OnEffectButtonClicked( Toolkit::Button button )
359   {
360     ToggleActorEffects();
361     return true;
362   }
363
364   /**
365    * Main key event handler
366    */
367   void OnKeyEvent(const KeyEvent& event)
368   {
369     if(event.state == KeyEvent::Down)
370     {
371       if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
372       {
373         mApplication.Quit();
374       }
375     }
376   }
377
378   //////////////////////////////////////////////////////////////
379   //
380   // Misc
381   //
382   //
383
384
385   void ChangeImage()
386   {
387     mCurrentImage++;
388     if(MOTION_STRETCH_NUM_ACTOR_IMAGES == mCurrentImage)
389     {
390       mCurrentImage = 0;
391     }
392
393     Image stretchImage = ResourceImage::New( MOTION_STRETCH_ACTOR_IMAGES[mCurrentImage] );
394     mMotionStretchImageActor.SetImage(stretchImage);
395   }
396
397
398 private:
399   Application&               mApplication;            ///< Application instance
400   Toolkit::View              mView;
401   Toolkit::ToolBar           mToolBar;
402   Image                      mIconEffectsOff;
403   Image                      mIconEffectsOn;
404   Layer                      mContentLayer;           ///< Content layer (contains actor for this stretch demo)
405
406   PushButton                 mActorEffectsButton;     ///< The actor effects toggling Button.
407
408   // Motion stretch
409   MotionStretchEffect mMotionStretchEffect;
410   ImageActor mMotionStretchImageActor;
411
412   // animate actor to position where user taps screen
413   Animation mActorTapMovementAnimation;
414
415   // show different animations to demonstrate stretch effect working on an object only movement basis
416   bool mActorEffectsEnabled;
417   Animation mActorAnimation;
418   int mCurrentActorAnimation;
419
420   // offer a selection of images that user can cycle between
421   int mCurrentImage;
422
423   TapGestureDetector mTapGestureDetector;
424
425   DeviceOrientation mOrientation;               ///< Current Device orientation
426   Animation mRotateAnimation;                   ///< Animation for rotating between landscape and portrait.
427
428 };
429
430 void RunTest(Application& app)
431 {
432   MotionStretchExampleApp test(app);
433
434   app.MainLoop();
435 }
436
437 // Entry point for Linux & SLP applications
438 //
439 int main(int argc, char **argv)
440 {
441   Application app = Application::New(&argc, &argv);
442
443   RunTest(app);
444
445   return 0;
446 }