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.
18 #include <dali/dali.h>
19 #include <dali-toolkit/dali-toolkit.h>
20 #include <dali-toolkit/devel-api/controls/bubble-effect/bubble-emitter.h>
21 #include "shared/view.h"
27 const char * const TOOLBAR_IMAGE( DALI_IMAGE_DIR "top-bar.png" );
28 const char * const APPLICATION_TITLE( "Bubble Effect" );
29 const char * const CHANGE_BACKGROUND_ICON( DALI_IMAGE_DIR "icon-change.png" );
30 const char * const CHANGE_BUBBLE_SHAPE_ICON( DALI_IMAGE_DIR "icon-replace.png" );
32 const char* BACKGROUND_IMAGES[]=
34 DALI_IMAGE_DIR "background-1.jpg",
35 DALI_IMAGE_DIR "background-2.jpg",
36 DALI_IMAGE_DIR "background-3.jpg",
37 DALI_IMAGE_DIR "background-4.jpg",
38 DALI_IMAGE_DIR "background-5.jpg",
40 const unsigned int NUM_BACKGROUND_IMAGES( sizeof( BACKGROUND_IMAGES ) / sizeof( BACKGROUND_IMAGES[0] ) );
42 const char* BUBBLE_SHAPE_IMAGES[] =
44 DALI_IMAGE_DIR "bubble-ball.png",
45 DALI_IMAGE_DIR "icon-effect-cross.png",
46 DALI_IMAGE_DIR "icon-item-view-layout-spiral.png",
47 DALI_IMAGE_DIR "icon-replace.png"
49 const unsigned int NUM_BUBBLE_SHAPE_IMAGES( sizeof( BUBBLE_SHAPE_IMAGES ) / sizeof( BUBBLE_SHAPE_IMAGES[0] ) );
51 const Vector2 DEFAULT_BUBBLE_SIZE( 10.f, 30.f );
52 const unsigned int DEFAULT_NUMBER_OF_BUBBLES( 1000 );
55 * @brief Load an image, scaled-down to no more than the stage dimensions.
57 * Uses image scaling mode FittingMode::SCALE_TO_FILL to resize the image at
58 * load time to cover the entire stage with pixels with no borders,
59 * and filter mode BOX_THEN_LINEAR to sample the image with
62 ResourceImage LoadStageFillingImage( const char * const imagePath )
64 Size stageSize = Stage::GetCurrent().GetSize();
65 return ResourceImage::New( imagePath, Dali::ImageDimensions( stageSize.x, stageSize.y ), Dali::FittingMode::SCALE_TO_FILL, Dali::SamplingMode::BOX_THEN_LINEAR );
70 // This example shows the usage of BubbleEmitter which displays lots of moving bubbles on the stage.
71 class BubbleEffectExample : public ConnectionTracker
74 BubbleEffectExample(Application &app)
76 mHSVDelta( Vector3( 0.f, 0.f, 0.5f ) ),
78 mCurrentBackgroundImageId( 0 ),
79 mCurrentBubbleShapeImageId( 0 ),
80 mNeedNewAnimation( true )
82 // Connect to the Application's Init signal
83 app.InitSignal().Connect(this, &BubbleEffectExample::Create);
86 ~BubbleEffectExample()
92 // The Init signal is received once (only) during the Application lifetime
93 void Create(Application& app)
95 Stage stage = Stage::GetCurrent();
96 Vector2 stageSize = stage.GetSize();
98 stage.KeyEventSignal().Connect(this, &BubbleEffectExample::OnKeyEvent);
100 // Creates a default view with a default tool bar.
101 // The view is added to the stage.
102 Toolkit::ToolBar toolBar;
103 Layer content = DemoHelper::CreateView( app,
110 // Add a button to change background. (right of toolbar)
111 mChangeBackgroundButton = Toolkit::PushButton::New();
112 mChangeBackgroundButton.SetBackgroundImage( ResourceImage::New( CHANGE_BACKGROUND_ICON ) );
113 mChangeBackgroundButton.ClickedSignal().Connect( this, &BubbleEffectExample::OnChangeIconClicked );
114 toolBar.AddControl( mChangeBackgroundButton,
115 DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage,
116 Toolkit::Alignment::HorizontalRight,
117 DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
118 // Add a button to change bubble shape. ( left of bar )
119 mChangeBubbleShapeButton = Toolkit::PushButton::New();
120 mChangeBubbleShapeButton.SetBackgroundImage( ResourceImage::New( CHANGE_BUBBLE_SHAPE_ICON ) );
121 mChangeBubbleShapeButton.ClickedSignal().Connect( this, &BubbleEffectExample::OnChangeIconClicked );
122 toolBar.AddControl( mChangeBubbleShapeButton,
123 DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage,
124 Toolkit::Alignment::HorizontalLeft,
125 DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
127 // Create and initialize the BubbleEmitter object
128 mBubbleEmitter = Toolkit::BubbleEmitter::New( stageSize,
129 ResourceImage::New( BUBBLE_SHAPE_IMAGES[mCurrentBubbleShapeImageId] ),
130 DEFAULT_NUMBER_OF_BUBBLES,
131 DEFAULT_BUBBLE_SIZE);
132 mBackgroundImage = LoadStageFillingImage( BACKGROUND_IMAGES[mCurrentBackgroundImageId] );
133 mBubbleEmitter.SetBackground( mBackgroundImage, mHSVDelta );
135 // Get the root actor of all bubbles, and add it to stage.
136 Actor bubbleRoot = mBubbleEmitter.GetRootActor();
137 bubbleRoot.SetParentOrigin(ParentOrigin::CENTER);
138 bubbleRoot.SetZ(0.1f); // Make sure the bubbles displayed on top og the background.
139 content.Add( bubbleRoot );
141 // Add the background image actor to stage
142 mBackground.SetBackgroundImage( mBackgroundImage );
144 // Set up the timer to emit bubble regularly when the finger is touched down but not moved
145 mTimerForBubbleEmission = Timer::New( mTimerInterval );
146 mTimerForBubbleEmission.TickSignal().Connect(this, &BubbleEffectExample::OnTimerTick);
148 // Connect the callback to the touch signal on the background
149 mBackground.TouchedSignal().Connect( this, &BubbleEffectExample::OnTouch );
157 // Set up the animation of emitting bubbles, to be efficient, every animation controls multiple emission ( 4 here )
158 void SetUpAnimation( Vector2 emitPosition, Vector2 direction )
160 if( mNeedNewAnimation )
162 float duration = Random::Range(1.f, 1.5f);
163 mEmitAnimation = Animation::New( duration );
164 mNeedNewAnimation = false;
165 mAnimateComponentCount = 0;
168 mBubbleEmitter.EmitBubble( mEmitAnimation, emitPosition, direction + Vector2(0.f, 30.f) /* upwards */, Vector2(300, 600) );
170 mAnimateComponentCount++;
172 if( mAnimateComponentCount % 4 ==0 )
174 mEmitAnimation.Play();
175 mNeedNewAnimation = true;
179 // Emit bubbles when the finger touches down but keep stationary.
180 // And stops emitting new bubble after being stationary for 2 seconds
183 if(mEmitPosition == mCurrentTouchPosition) // finger is not moving
186 if(mNonMovementCount < (1000 / mTimerInterval)) // 1 seconds
188 for(int i = 0; i < 4; i++) // emit 4 bubbles every timer tick
190 SetUpAnimation( mCurrentTouchPosition+Vector2(rand()%5, rand()%5), Vector2(rand()%60-30, rand()%100-50) );
196 mNonMovementCount = 0;
197 mEmitPosition = mCurrentTouchPosition;
203 // Callback function of the touch signal on the background
204 bool OnTouch(Dali::Actor actor, const Dali::TouchEvent& event)
206 const TouchPoint &point = event.GetPoint(0);
209 case TouchPoint::Down:
211 mCurrentTouchPosition = point.screen;
212 mEmitPosition = point.screen;
213 mTimerForBubbleEmission.Start();
214 mNonMovementCount = 0;
218 case TouchPoint::Motion:
220 Vector2 displacement = point.screen - mCurrentTouchPosition;
221 mCurrentTouchPosition = point.screen;
222 //emit multiple bubbles along the moving direction when the finger moves quickly
223 float step = std::min(5.f, displacement.Length());
224 for( float i=0.25f; i<step; i=i+1.f)
226 SetUpAnimation( mCurrentTouchPosition+displacement*(i/step), displacement );
231 case TouchPoint::Leave:
232 case TouchPoint::Interrupted:
234 mTimerForBubbleEmission.Stop();
235 mEmitAnimation.Play();
236 mNeedNewAnimation = true;
237 mAnimateComponentCount = 0;
240 case TouchPoint::Stationary:
241 case TouchPoint::Last:
251 bool OnChangeIconClicked( Toolkit::Button button )
253 if(button == mChangeBackgroundButton)
255 mBackgroundImage = LoadStageFillingImage( BACKGROUND_IMAGES[ ++mCurrentBackgroundImageId % NUM_BACKGROUND_IMAGES ] );
257 mBubbleEmitter.SetBackground( mBackgroundImage, mHSVDelta );
259 mBackground.SetBackgroundImage( mBackgroundImage );
261 else if( button == mChangeBubbleShapeButton )
263 mBubbleEmitter.SetShapeImage( ResourceImage::New( BUBBLE_SHAPE_IMAGES[ ++mCurrentBubbleShapeImageId % NUM_BUBBLE_SHAPE_IMAGES ] ) );
269 * Main key event handler
271 void OnKeyEvent(const KeyEvent& event)
273 if(event.state == KeyEvent::Down)
275 if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
285 Image mBackgroundImage;
286 Dali::Toolkit::Control mBackground;
288 Toolkit::BubbleEmitter mBubbleEmitter;
289 Animation mEmitAnimation;
290 Toolkit::PushButton mChangeBackgroundButton;
291 Toolkit::PushButton mChangeBubbleShapeButton;
292 Timer mTimerForBubbleEmission;
295 Vector2 mCurrentTouchPosition;
296 Vector2 mEmitPosition;
298 unsigned int mAnimateComponentCount;
299 unsigned int mNonMovementCount;
300 unsigned int mTimerInterval;
301 unsigned int mCurrentBackgroundImageId;
302 unsigned int mCurrentBubbleShapeImageId;
304 bool mNeedNewAnimation;
307 /*****************************************************************************/
310 RunTest(Application& app)
312 BubbleEffectExample theApp(app);
316 /*****************************************************************************/
319 main(int argc, char **argv)
321 Application app = Application::New(&argc, &argv, DALI_DEMO_THEME_PATH);