2 * Copyright (c) 2020 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/devel-api/actors/actor-devel.h>
20 #include <dali-toolkit/dali-toolkit.h>
21 #include <dali-toolkit/devel-api/controls/popup/popup.h>
22 #include "shared/view.h"
26 using Toolkit::TextLabel;
31 const char* BACKGROUND_IMAGE( DEMO_IMAGE_DIR "background-gradient.jpg" );
32 const Vector4 BACKGROUND_COLOUR( 1.0f, 1.0f, 1.0f, 0.15f );
34 const char* BORDER_IMAGE( DEMO_IMAGE_DIR "border-4px.9.png" );
35 const int BORDER_WIDTH = ( 11.0f + 4.0f ); // Shadow size = 11, border size = 4.
36 const char* RESIZE_HANDLE_IMAGE( DEMO_IMAGE_DIR "resize-handle.png" );
38 const int MARGIN_SIZE = 10;
40 const char* const NEXT_BUTTON_ID = "NEXT_BUTTON";
41 const char* const PREVIOUS_BUTTON_ID = "PREVIOUS_BUTTON";
42 const char * const DALI_ICON_PLAY = DEMO_IMAGE_DIR "icon-play.png";
44 const char* const FITTING_BUTTON_ID = "FITTING_BUTTON";
45 const char* const SAMPLING_BUTTON_ID = "SAMPLING_BUTTON";
46 const char* const FITTING_BUTTON_TEXT = "Fitting";
47 const char* const SAMPLING_BUTTON_TEXT = "Sampling";
49 const char* const STYLE_LABEL_TEXT = "ImageScalingGroupLabel";
50 const char* const STYLE_BUTTON_TEXT = "ImageScalingButton";
52 const char* IMAGE_PATHS[] =
54 // Variety of sizes, shapes and formats:
55 DEMO_IMAGE_DIR "dali-logo.png",
56 DEMO_IMAGE_DIR "layer1.png",
57 DEMO_IMAGE_DIR "layer2.png",
58 DEMO_IMAGE_DIR "animation-list.png",
59 DEMO_IMAGE_DIR "music-libray-main-screen.png",
60 DEMO_IMAGE_DIR "music-libray-record-cover.png",
61 DEMO_IMAGE_DIR "contacts-background.png",
62 DEMO_IMAGE_DIR "portrait_screen_primitive_shapes.gif",
63 DEMO_IMAGE_DIR "landscape_screen_primitive_shapes.gif",
64 DEMO_IMAGE_DIR "square_primitive_shapes.bmp",
65 DEMO_IMAGE_DIR "gallery-large-14.jpg",
66 DEMO_IMAGE_DIR "book-landscape-cover.jpg",
67 DEMO_IMAGE_DIR "book-portrait-p1.jpg",
68 DEMO_IMAGE_DIR "book-landscape-cover-back.jpg",
70 // Worst case for aliasing in downscaling, 2k x 2k 1 bit per pixel dithered
71 // black and white image:
72 DEMO_IMAGE_DIR "gallery-large-14.wbmp",
74 DEMO_IMAGE_DIR "background-1.jpg",
75 DEMO_IMAGE_DIR "background-blocks.jpg",
76 DEMO_IMAGE_DIR "background-magnifier.jpg",
77 DEMO_IMAGE_DIR "gallery-large-14.jpg",
80 const int NUM_IMAGE_PATHS = sizeof(IMAGE_PATHS) / sizeof(IMAGE_PATHS[0]) - 1u;
82 /** Cycle the scaling mode options. */
83 FittingMode::Type NextScalingMode( FittingMode::Type oldMode )
85 FittingMode::Type newMode = FittingMode::SHRINK_TO_FIT;
88 case FittingMode::SHRINK_TO_FIT:
89 newMode = FittingMode::SCALE_TO_FILL;
91 case FittingMode::SCALE_TO_FILL:
92 newMode = FittingMode::FIT_WIDTH;
94 case FittingMode::FIT_WIDTH:
95 newMode = FittingMode::FIT_HEIGHT;
97 case FittingMode::FIT_HEIGHT:
98 newMode = FittingMode::SHRINK_TO_FIT;
104 /** Cycle through filter mode options. */
105 SamplingMode::Type NextFilterMode( SamplingMode::Type oldMode )
107 SamplingMode::Type newMode = SamplingMode::BOX;
111 case SamplingMode::BOX:
112 newMode = SamplingMode::NEAREST;
114 case SamplingMode::NEAREST:
115 newMode = SamplingMode::LINEAR;
117 case SamplingMode::LINEAR:
118 newMode = SamplingMode::BOX_THEN_NEAREST;
120 case SamplingMode::BOX_THEN_NEAREST:
121 newMode = SamplingMode::BOX_THEN_LINEAR;
123 case SamplingMode::BOX_THEN_LINEAR:
124 newMode = SamplingMode::NO_FILTER;
126 case SamplingMode::NO_FILTER:
127 newMode = SamplingMode::BOX;
129 case SamplingMode::DONT_CARE:
130 newMode = SamplingMode::BOX;
136 const char* StringFromScalingMode( FittingMode::Type scalingMode )
138 return scalingMode == FittingMode::SCALE_TO_FILL ? "SCALE_TO_FILL" : scalingMode == FittingMode::SHRINK_TO_FIT ? "SHRINK_TO_FIT" : scalingMode == FittingMode::FIT_WIDTH ? "FIT_WIDTH" : scalingMode == FittingMode::FIT_HEIGHT ? "FIT_HEIGHT" : "UnknownScalingMode";
141 const char* StringFromFilterMode( SamplingMode::Type filterMode )
143 return filterMode == SamplingMode::BOX ? "BOX" : filterMode == SamplingMode::BOX_THEN_NEAREST ? "BOX_THEN_NEAREST" : filterMode == SamplingMode::BOX_THEN_LINEAR ? "BOX_THEN_LINEAR" : filterMode == SamplingMode::NEAREST ? "NEAREST" : filterMode == SamplingMode::LINEAR ? "LINEAR" : filterMode == SamplingMode::NO_FILTER ? "NO_FILTER" : filterMode == SamplingMode::DONT_CARE ? "DONT_CARE" : "UnknownFilterMode";
148 // This example shows the load-time image scaling and filtering features.
150 class ImageScalingAndFilteringController : public ConnectionTracker
154 ImageScalingAndFilteringController( Application& application )
155 : mApplication( application ),
156 mLastPinchScale( 1.0f ),
157 mImageStageScale( 0.5f, 0.5f ),
159 mFittingMode( FittingMode::FIT_WIDTH ),
160 mSamplingMode( SamplingMode::BOX_THEN_LINEAR),
161 mImageLoading( false ),
162 mQueuedImageLoad( false )
164 // Connect to the Application's Init signal
165 mApplication.InitSignal().Connect( this, &ImageScalingAndFilteringController::Create );
168 ~ImageScalingAndFilteringController()
170 // Nothing to do here;
173 // The Init signal is received once (only) during the Application lifetime
174 void Create( Application& application )
176 // Get a handle to the stage
177 Stage stage = Stage::GetCurrent();
179 // Hide the indicator bar
180 application.GetWindow().ShowIndicator( Dali::Window::INVISIBLE );
183 Dali::Property::Map backgroundImage;
184 backgroundImage.Insert( Toolkit::Visual::Property::TYPE, Toolkit::Visual::IMAGE );
185 backgroundImage.Insert( Toolkit::ImageVisual::Property::URL, BACKGROUND_IMAGE );
186 backgroundImage.Insert( Toolkit::ImageVisual::Property::DESIRED_WIDTH, stage.GetSize().width );
187 backgroundImage.Insert( Toolkit::ImageVisual::Property::DESIRED_HEIGHT, stage.GetSize().height );
188 backgroundImage.Insert( Toolkit::ImageVisual::Property::FITTING_MODE, FittingMode::SCALE_TO_FILL );
189 backgroundImage.Insert( Toolkit::ImageVisual::Property::SAMPLING_MODE, SamplingMode::BOX_THEN_NEAREST );
191 Toolkit::ImageView background = Toolkit::ImageView::New();
192 background.SetProperty( Toolkit::ImageView::Property::IMAGE, backgroundImage );
193 background.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT );
194 background.SetProperty( Actor::Property::SIZE, stage.GetSize() );
195 stage.Add( background );
197 mDesiredBox = Toolkit::ImageView::New( BORDER_IMAGE );
198 background.Add( mDesiredBox );
200 mDesiredBox.SetProperty( Actor::Property::SIZE, stage.GetSize() * mImageStageScale );
201 mDesiredBox.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER );
202 mDesiredBox.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER );
204 // Initialize the actor
205 mImageView = Toolkit::ImageView::New( IMAGE_PATHS[ 0 ] );
207 // Reposition the actor
208 mImageView.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER );
209 mImageView.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER );
211 // Display the actor on the stage
212 mDesiredBox.Add( mImageView );
214 mImageView.SetProperty( Actor::Property::SIZE, stage.GetSize() * mImageStageScale );
216 // Setup the pinch detector for scaling the desired image load dimensions:
217 mPinchDetector = PinchGestureDetector::New();
218 mPinchDetector.Attach( mImageView );
219 mPinchDetector.DetectedSignal().Connect( this, &ImageScalingAndFilteringController::OnPinch );
221 mGrabCorner = Toolkit::ImageView::New( RESIZE_HANDLE_IMAGE );
222 mGrabCorner.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::ALL_DIMENSIONS );
223 mGrabCorner.SetProperty( Dali::Actor::Property::NAME, "GrabCorner" );
224 mGrabCorner.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_RIGHT );
225 mGrabCorner.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_RIGHT );
226 mGrabCorner.SetProperty( Actor::Property::POSITION, Vector2( -BORDER_WIDTH, -BORDER_WIDTH ));
227 mGrabCorner.SetProperty( DevelActor::Property::OPACITY, 0.6f );
229 Layer grabCornerLayer = Layer::New();
230 grabCornerLayer.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_RIGHT );
231 grabCornerLayer.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_RIGHT );
232 grabCornerLayer.Add( mGrabCorner );
233 mDesiredBox.Add( grabCornerLayer );
235 mPanGestureDetector = PanGestureDetector::New();
236 mPanGestureDetector.Attach( mGrabCorner );
237 mPanGestureDetector.DetectedSignal().Connect( this, &ImageScalingAndFilteringController::OnPan );
239 // Tie-in input event handlers:
240 stage.KeyEventSignal().Connect( this, &ImageScalingAndFilteringController::OnKeyEvent );
248 * Create the GUI controls which float above the scene
250 void CreateControls()
252 Stage stage = Stage::GetCurrent();
254 Dali::Layer controlsLayer = Dali::Layer::New();
255 controlsLayer.SetResizePolicy( ResizePolicy::SIZE_RELATIVE_TO_PARENT, Dimension::ALL_DIMENSIONS );
256 controlsLayer.SetProperty( Actor::Property::SIZE_MODE_FACTOR, Vector3( 1.0f, 1.0f, 1.0f ) );
257 controlsLayer.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT);
258 controlsLayer.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_LEFT);
259 stage.Add( controlsLayer );
261 // Back and next image buttons in corners of stage:
262 unsigned int playWidth = std::min( stage.GetSize().x * (1 / 5.0f), 58.0f );
263 Toolkit::ImageView imagePrevious = Toolkit::ImageView::New( DALI_ICON_PLAY, ImageDimensions( playWidth, playWidth ) );
265 // Last image button:
266 imagePrevious.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT );
267 imagePrevious.RotateBy( Radian(3.14159265358979323846f), Vector3( 0, 1.0f, 0 ) );
268 imagePrevious.SetProperty( Actor::Property::POSITION_Y, playWidth * 0.5f );
269 imagePrevious.SetProperty( Actor::Property::POSITION_X, playWidth + playWidth * 0.5f );
270 imagePrevious.SetProperty( DevelActor::Property::OPACITY, 0.6f );
271 controlsLayer.Add( imagePrevious );
272 imagePrevious.SetProperty( Dali::Actor::Property::NAME, PREVIOUS_BUTTON_ID );
273 imagePrevious.TouchSignal().Connect( this, &ImageScalingAndFilteringController::OnControlTouched );
275 // Next image button:
276 Toolkit::ImageView imageNext = Toolkit::ImageView::New( DALI_ICON_PLAY, ImageDimensions( playWidth, playWidth ) );
277 imageNext.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_RIGHT );
278 imageNext.SetProperty( Actor::Property::POSITION_Y, playWidth * 0.5f );
279 imageNext.SetProperty( Actor::Property::POSITION_X, stage.GetSize().x - playWidth * 0.5f );
280 imageNext.SetProperty( DevelActor::Property::OPACITY, 0.6f );
281 controlsLayer.Add( imageNext );
282 imageNext.SetProperty( Dali::Actor::Property::NAME, NEXT_BUTTON_ID );
283 imageNext.TouchSignal().Connect( this, &ImageScalingAndFilteringController::OnControlTouched );
285 // Buttons to popup selectors for fitting and sampling modes:
287 // Wrapper table to hold two buttons side by side:
288 Toolkit::TableView modesGroupBackground = Toolkit::TableView::New( 1, 2 );
289 modesGroupBackground.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
290 modesGroupBackground.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
291 modesGroupBackground.SetBackgroundColor( BACKGROUND_COLOUR );
292 modesGroupBackground.SetCellPadding( Size( MARGIN_SIZE * 0.5f, MARGIN_SIZE ) );
293 modesGroupBackground.SetFitHeight( 0 );
295 modesGroupBackground.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_LEFT );
296 modesGroupBackground.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_LEFT );
297 modesGroupBackground.SetProperty( Actor::Property::POSITION, Vector2( 0.0f, 0.0f ));
299 controlsLayer.Add( modesGroupBackground );
302 // Vertical table to hold label and button:
303 Toolkit::TableView fittingModeGroup = Toolkit::TableView::New( 2, 1 );
304 fittingModeGroup.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
305 fittingModeGroup.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
306 fittingModeGroup.SetBackgroundColor( BACKGROUND_COLOUR );
307 fittingModeGroup.SetCellPadding( Size( MARGIN_SIZE * 0.5f, MARGIN_SIZE * 0.5f ) );
308 fittingModeGroup.SetFitHeight( 0 );
309 fittingModeGroup.SetFitHeight( 1 );
311 TextLabel label = TextLabel::New( "Image fitting mode:" );
312 label.SetStyleName( STYLE_LABEL_TEXT );
313 fittingModeGroup.Add( label );
315 Toolkit::PushButton button = CreateButton( FITTING_BUTTON_ID, StringFromScalingMode( mFittingMode ) );
316 fittingModeGroup.Add( button );
317 mFittingModeButton = button;
319 modesGroupBackground.Add( fittingModeGroup );
323 // Vertical table to hold label and button:
324 Toolkit::TableView samplingModeGroup = Toolkit::TableView::New( 2, 1 );
325 samplingModeGroup.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
326 samplingModeGroup.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
327 samplingModeGroup.SetBackgroundColor( BACKGROUND_COLOUR );
328 samplingModeGroup.SetCellPadding( Size( MARGIN_SIZE * 0.5f, MARGIN_SIZE * 0.5f ) );
329 samplingModeGroup.SetFitHeight( 0 );
330 samplingModeGroup.SetFitHeight( 1 );
332 TextLabel label = TextLabel::New( "Image sampling mode:" );
333 label.SetStyleName( STYLE_LABEL_TEXT );
334 samplingModeGroup.Add( label );
336 Toolkit::PushButton button = CreateButton( SAMPLING_BUTTON_ID, StringFromFilterMode( mSamplingMode ) );
337 samplingModeGroup.Add( button );
338 mSamplingModeButton = button;
340 modesGroupBackground.Add( samplingModeGroup );
344 Toolkit::PushButton CreateButton( const char * id, const char * label )
346 Toolkit::PushButton button = Toolkit::PushButton::New();
347 button.SetStyleName( STYLE_BUTTON_TEXT );
348 button.SetProperty( Dali::Actor::Property::NAME, id );
349 button.SetProperty( Toolkit::Button::Property::LABEL, label );
350 button.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
351 button.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
352 button.ClickedSignal().Connect( this, &ImageScalingAndFilteringController::OnButtonClicked );
356 Toolkit::Popup CreatePopup()
358 Stage stage = Stage::GetCurrent();
359 const float POPUP_WIDTH_DP = stage.GetSize().width * 0.75f;
361 Toolkit::Popup popup = Toolkit::Popup::New();
362 popup.SetProperty( Dali::Actor::Property::NAME, "POPUP" );
363 popup.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER );
364 popup.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER );
365 popup.SetProperty( Actor::Property::SIZE, Vector2( POPUP_WIDTH_DP, 0.0f ) );
367 popup.OutsideTouchedSignal().Connect( this, &ImageScalingAndFilteringController::OnPopupOutsideTouched );
372 Toolkit::PushButton CreatePopupButton( Actor parent, const char* id )
374 Toolkit::PushButton button = Toolkit::PushButton::New();
375 button.SetProperty( Dali::Actor::Property::NAME, id );
376 button.SetProperty( Toolkit::Button::Property::LABEL, id );
378 button.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT );
379 button.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_LEFT );
380 button.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
381 button.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
383 button.ClickedSignal().Connect( this, &ImageScalingAndFilteringController::OnButtonClicked );
385 parent.Add( button );
389 bool OnButtonClicked( Toolkit::Button button )
391 if( button.GetProperty< std::string >( Dali::Actor::Property::NAME ) == FITTING_BUTTON_ID )
393 mPopup = CreatePopup();
395 // Four-row table to hold buttons:
396 Toolkit::TableView fittingModes = Toolkit::TableView::New( 4, 1 );
397 fittingModes.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
398 fittingModes.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
399 fittingModes.SetCellPadding( Size( MARGIN_SIZE, MARGIN_SIZE * 0.5 ) );
400 fittingModes.SetFitHeight( 0 );
401 fittingModes.SetFitHeight( 1 );
402 fittingModes.SetFitHeight( 2 );
403 fittingModes.SetFitHeight( 3 );
405 CreatePopupButton( fittingModes, StringFromScalingMode( FittingMode::SCALE_TO_FILL ) );
406 CreatePopupButton( fittingModes, StringFromScalingMode( FittingMode::SHRINK_TO_FIT ) );
407 CreatePopupButton( fittingModes, StringFromScalingMode( FittingMode::FIT_WIDTH ) );
408 CreatePopupButton( fittingModes, StringFromScalingMode( FittingMode::FIT_HEIGHT ) );
410 mPopup.SetContent( fittingModes );
411 Stage::GetCurrent().Add( mPopup );
412 mPopup.SetDisplayState( Toolkit::Popup::SHOWN );
414 else if( button.GetProperty< std::string >( Dali::Actor::Property::NAME ) == SAMPLING_BUTTON_ID )
416 mPopup = CreatePopup();
418 // Table to hold buttons for each sampling mode:
419 Toolkit::TableView samplingModes = Toolkit::TableView::New( 6, 1 );
420 samplingModes.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
421 samplingModes.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
422 samplingModes.SetCellPadding( Size( MARGIN_SIZE, MARGIN_SIZE * 0.5 ) );
423 samplingModes.SetFitHeight( 0 );
424 samplingModes.SetFitHeight( 1 );
425 samplingModes.SetFitHeight( 2 );
426 samplingModes.SetFitHeight( 3 );
427 samplingModes.SetFitHeight( 4 );
428 samplingModes.SetFitHeight( 5 );
430 CreatePopupButton( samplingModes, StringFromFilterMode( SamplingMode::NEAREST ) );
431 CreatePopupButton( samplingModes, StringFromFilterMode( SamplingMode::LINEAR ) );
432 CreatePopupButton( samplingModes, StringFromFilterMode( SamplingMode::BOX ) );
433 CreatePopupButton( samplingModes, StringFromFilterMode( SamplingMode::BOX_THEN_NEAREST ) );
434 CreatePopupButton( samplingModes, StringFromFilterMode( SamplingMode::BOX_THEN_LINEAR ) );
435 CreatePopupButton( samplingModes, StringFromFilterMode( SamplingMode::NO_FILTER ) );
437 mPopup.SetContent( samplingModes );
438 Stage::GetCurrent().Add( mPopup );
439 mPopup.SetDisplayState( Toolkit::Popup::SHOWN );
441 else if( CheckFittingModeButton( button, FittingMode::SCALE_TO_FILL) ||
442 CheckFittingModeButton( button, FittingMode::SHRINK_TO_FIT) ||
443 CheckFittingModeButton( button, FittingMode::FIT_WIDTH) ||
444 CheckFittingModeButton( button, FittingMode::FIT_HEIGHT) )
447 else if( CheckSamplingModeButton( button, SamplingMode::NEAREST ) ||
448 CheckSamplingModeButton( button, SamplingMode::LINEAR ) ||
449 CheckSamplingModeButton( button, SamplingMode::BOX ) ||
450 CheckSamplingModeButton( button, SamplingMode::LINEAR ) ||
451 CheckSamplingModeButton( button, SamplingMode::BOX_THEN_NEAREST ) ||
452 CheckSamplingModeButton( button, SamplingMode::BOX_THEN_LINEAR ) ||
453 CheckSamplingModeButton( button, SamplingMode::NO_FILTER ) )
459 bool CheckFittingModeButton( Actor &button, FittingMode::Type mode )
461 const char * const modeName = StringFromScalingMode( mode );
462 if( button.GetProperty< std::string >( Dali::Actor::Property::NAME ) == modeName )
465 mFittingModeButton.SetProperty( Toolkit::Button::Property::LABEL, modeName );
467 mPopup.SetDisplayState( Toolkit::Popup::HIDDEN );
474 bool CheckSamplingModeButton( Actor &button, SamplingMode::Type mode )
476 const char * const modeName = StringFromFilterMode( mode );
477 if( button.GetProperty< std::string >( Dali::Actor::Property::NAME ) == modeName )
479 mSamplingMode = mode;
480 mSamplingModeButton.SetProperty( Toolkit::Button::Property::LABEL, modeName );
482 mPopup.SetDisplayState( Toolkit::Popup::HIDDEN );
489 void OnPopupOutsideTouched()
493 mPopup.SetDisplayState( Toolkit::Popup::HIDDEN );
498 bool OnControlTouched( Actor actor, const TouchData& event )
500 if(event.GetPointCount() > 0)
502 switch( event.GetState( 0 ) )
506 const std::string & name = actor.GetProperty< std::string >( Dali::Actor::Property::NAME );
507 if( name == NEXT_BUTTON_ID )
509 mCurrentPath = mCurrentPath + 1;
510 mCurrentPath = mCurrentPath < NUM_IMAGE_PATHS ? mCurrentPath : 0;
513 else if( name == PREVIOUS_BUTTON_ID )
515 mCurrentPath = mCurrentPath - 1;
516 mCurrentPath = mCurrentPath >= 0 ? mCurrentPath : NUM_IMAGE_PATHS - 1;
531 void OnPinch( Actor actor, const PinchGesture& pinch )
533 if( pinch.state == Gesture::Started )
535 mLastPinchScale = pinch.scale;
537 const float scale = pinch.scale;
539 if( ! Equals( scale, mLastPinchScale ) )
541 if ( scale < mLastPinchScale )
543 mImageStageScale.x = std::max( 0.05f, mImageStageScale.x * 0.9f );
544 mImageStageScale.y = std::max( 0.05f, mImageStageScale.y * 0.9f );
548 mImageStageScale.x = std::max( 0.05f, std::min( 1.0f, mImageStageScale.x * 1.1f ) );
549 mImageStageScale.y = std::max( 0.05f, std::min( 1.0f, mImageStageScale.y * 1.1f ) );
553 mLastPinchScale = scale;
556 void OnPan( Actor actor, const PanGesture& gesture )
558 Stage stage = Stage::GetCurrent();
559 // 1.0f and 0.75f are the maximum size caps of the resized image, as a factor of stage-size.
560 mImageStageScale.x = std::max( 0.05f, std::min( 0.95f, mImageStageScale.x + ( gesture.displacement.x * 2.0f / stage.GetSize().width ) ) );
561 mImageStageScale.y = std::max( 0.05f, std::min( 0.70f, mImageStageScale.y + ( gesture.displacement.y * 2.0f / stage.GetSize().height ) ) );
566 void OnKeyEvent(const KeyEvent& event)
568 if( event.state == KeyEvent::Down )
570 if( IsKey( event, Dali::DALI_KEY_ESCAPE ) || IsKey( event, Dali::DALI_KEY_BACK ) )
572 if( mPopup && mPopup.GetCurrentProperty< bool >( Actor::Property::VISIBLE ) )
574 mPopup.SetDisplayState( Toolkit::Popup::HIDDEN );
582 else if ( event.keyPressedName == "Right" )
584 mImageStageScale.x = std::max( 0.05f, std::min( 1.0f, mImageStageScale.x * 1.1f ) );
586 else if ( event.keyPressedName == "Left" )
588 mImageStageScale.x = std::max( 0.05f, mImageStageScale.x * 0.9f );
590 else if ( event.keyPressedName == "Up" )
592 mImageStageScale.y = std::max( 0.05f, std::min( 1.0f, mImageStageScale.y * 1.1f ) );
594 else if ( event.keyPressedName == "Down" )
596 mImageStageScale.y = std::max( 0.05f, mImageStageScale.y * 0.9f );
598 else if ( event.keyPressedName == "o" )
600 mImageStageScale.x = std::max( 0.05f, mImageStageScale.x * 0.9f );
601 mImageStageScale.y = std::max( 0.05f, mImageStageScale.y * 0.9f );
603 else if ( event.keyPressedName == "p" )
605 mImageStageScale.x = std::max( 0.05f, std::min( 1.0f, mImageStageScale.x * 1.1f ) );
606 mImageStageScale.y = std::max( 0.05f, std::min( 1.0f, mImageStageScale.y * 1.1f ) );
608 else if ( event.keyPressedName == "n" )
610 mCurrentPath = mCurrentPath + 1;
611 mCurrentPath = mCurrentPath < NUM_IMAGE_PATHS ? mCurrentPath : 0;
613 else if ( event.keyPressedName == "b" )
615 mCurrentPath = mCurrentPath - 1;
616 mCurrentPath = mCurrentPath >= 0 ? mCurrentPath : NUM_IMAGE_PATHS - 1;
618 // Cycle filter and scaling modes:
619 else if ( event.keyPressedName == "f" )
621 mSamplingMode = NextFilterMode( mSamplingMode );
622 mSamplingModeButton.SetProperty( Toolkit::Button::Property::LABEL, StringFromFilterMode( mSamplingMode ) );
624 // Cycle filter and scaling modes:
625 else if ( event.keyPressedName == "s" )
627 mFittingMode = NextScalingMode( mFittingMode );
628 mFittingModeButton.SetProperty( Toolkit::Button::Property::LABEL, StringFromScalingMode( mFittingMode ) );
643 mImageLoading = true;
645 const char * const path = IMAGE_PATHS[ mCurrentPath ];
646 Stage stage = Stage::GetCurrent();
647 Size imageSize = stage.GetSize() * mImageStageScale;
648 mImageView.SetProperty( Actor::Property::SIZE, imageSize );
651 map[Toolkit::ImageVisual::Property::URL] = path;
652 map[Toolkit::ImageVisual::Property::DESIRED_WIDTH] = imageSize.x;
653 map[Toolkit::ImageVisual::Property::DESIRED_HEIGHT] = imageSize.y;
654 map[Toolkit::ImageVisual::Property::FITTING_MODE] = mFittingMode;
655 map[Toolkit::ImageVisual::Property::SAMPLING_MODE] = mSamplingMode;
657 mImageView.SetProperty( Toolkit::ImageView::Property::IMAGE, map );
664 Stage stage = Stage::GetCurrent();
665 Size imageSize = stage.GetSize() * mImageStageScale;
669 // Border size needs to be modified to take into account the width of the frame.
670 Vector2 borderScale( ( imageSize + Vector2( BORDER_WIDTH * 2.0f, BORDER_WIDTH * 2.0f ) ) / stage.GetSize() );
671 mDesiredBox.SetProperty( Actor::Property::SIZE, stage.GetSize() * borderScale );
675 Application& mApplication;
676 Toolkit::ImageView mDesiredBox; //< Background rectangle to show requested image size.
677 Toolkit::PushButton mFittingModeButton;
678 Toolkit::PushButton mSamplingModeButton;
679 Toolkit::Popup mPopup;
680 PinchGestureDetector mPinchDetector;
681 float mLastPinchScale;
682 Toolkit::ImageView mGrabCorner;
683 PanGestureDetector mPanGestureDetector;
684 Toolkit::ImageView mImageView;
685 Vector2 mImageStageScale;
687 FittingMode::Type mFittingMode;
688 SamplingMode::Type mSamplingMode;
690 bool mQueuedImageLoad;
694 int DALI_EXPORT_API main( int argc, char **argv )
696 Application application = Application::New( &argc, &argv, DEMO_THEME_PATH );
697 ImageScalingAndFilteringController test( application );
698 application.MainLoop();