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-toolkit/dali-toolkit.h>
19 #include <dali-toolkit/devel-api/controls/popup/popup.h>
20 #include <dali-toolkit/devel-api/controls/table-view/table-view.h>
21 #include <dali/dali.h>
22 #include <dali/devel-api/actors/actor-devel.h>
24 #include "shared/view.h"
27 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",
79 const int NUM_IMAGE_PATHS = sizeof(IMAGE_PATHS) / sizeof(IMAGE_PATHS[0]) - 1u;
81 /** Cycle the scaling mode options. */
82 FittingMode::Type NextScalingMode(FittingMode::Type oldMode)
84 FittingMode::Type newMode = FittingMode::SHRINK_TO_FIT;
87 case FittingMode::SHRINK_TO_FIT:
88 newMode = FittingMode::SCALE_TO_FILL;
90 case FittingMode::SCALE_TO_FILL:
91 newMode = FittingMode::FIT_WIDTH;
93 case FittingMode::FIT_WIDTH:
94 newMode = FittingMode::FIT_HEIGHT;
96 case FittingMode::FIT_HEIGHT:
97 newMode = FittingMode::SHRINK_TO_FIT;
103 /** Cycle through filter mode options. */
104 SamplingMode::Type NextFilterMode(SamplingMode::Type oldMode)
106 SamplingMode::Type newMode = SamplingMode::BOX;
110 case SamplingMode::BOX:
111 newMode = SamplingMode::NEAREST;
113 case SamplingMode::NEAREST:
114 newMode = SamplingMode::LINEAR;
116 case SamplingMode::LINEAR:
117 newMode = SamplingMode::BOX_THEN_NEAREST;
119 case SamplingMode::BOX_THEN_NEAREST:
120 newMode = SamplingMode::BOX_THEN_LINEAR;
122 case SamplingMode::BOX_THEN_LINEAR:
123 newMode = SamplingMode::NO_FILTER;
125 case SamplingMode::NO_FILTER:
126 newMode = SamplingMode::BOX;
128 case SamplingMode::DONT_CARE:
129 newMode = SamplingMode::BOX;
135 const char* StringFromScalingMode(FittingMode::Type scalingMode)
137 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";
140 const char* StringFromFilterMode(SamplingMode::Type filterMode)
142 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";
147 // This example shows the load-time image scaling and filtering features.
149 class ImageScalingAndFilteringController : public ConnectionTracker
152 ImageScalingAndFilteringController(Application& application)
153 : mApplication(application),
154 mLastPinchScale(1.0f),
155 mImageWindowScale(0.5f, 0.5f),
157 mFittingMode(FittingMode::FIT_WIDTH),
158 mSamplingMode(SamplingMode::BOX_THEN_LINEAR),
159 mImageLoading(false),
160 mQueuedImageLoad(false)
162 // Connect to the Application's Init signal
163 mApplication.InitSignal().Connect(this, &ImageScalingAndFilteringController::Create);
166 ~ImageScalingAndFilteringController()
168 // Nothing to do here;
171 // The Init signal is received once (only) during the Application lifetime
172 void Create(Application& application)
174 // Get a handle to the window
175 Window window = application.GetWindow();
176 Vector2 windowSize = window.GetSize();
179 Dali::Property::Map backgroundImage;
180 backgroundImage.Insert(Toolkit::Visual::Property::TYPE, Toolkit::Visual::IMAGE);
181 backgroundImage.Insert(Toolkit::ImageVisual::Property::URL, BACKGROUND_IMAGE);
182 backgroundImage.Insert(Toolkit::ImageVisual::Property::DESIRED_WIDTH, windowSize.width);
183 backgroundImage.Insert(Toolkit::ImageVisual::Property::DESIRED_HEIGHT, windowSize.height);
184 backgroundImage.Insert(Toolkit::ImageVisual::Property::FITTING_MODE, FittingMode::SCALE_TO_FILL);
185 backgroundImage.Insert(Toolkit::ImageVisual::Property::SAMPLING_MODE, SamplingMode::BOX_THEN_NEAREST);
187 Toolkit::ImageView background = Toolkit::ImageView::New();
188 background.SetProperty(Toolkit::ImageView::Property::IMAGE, backgroundImage);
189 background.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT);
190 background.SetProperty(Actor::Property::SIZE, windowSize);
191 window.Add(background);
193 mDesiredBox = Toolkit::ImageView::New(BORDER_IMAGE);
194 background.Add(mDesiredBox);
196 mDesiredBox.SetProperty(Actor::Property::SIZE, windowSize * mImageWindowScale);
197 mDesiredBox.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
198 mDesiredBox.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
200 // Initialize the actor
201 mImageView = Toolkit::ImageView::New(IMAGE_PATHS[0]);
203 // Reposition the actor
204 mImageView.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
205 mImageView.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
207 // Display the actor on the window
208 mDesiredBox.Add(mImageView);
210 mImageView.SetProperty(Actor::Property::SIZE, windowSize * mImageWindowScale);
212 // Setup the pinch detector for scaling the desired image load dimensions:
213 mPinchDetector = PinchGestureDetector::New();
214 mPinchDetector.Attach(mImageView);
215 mPinchDetector.DetectedSignal().Connect(this, &ImageScalingAndFilteringController::OnPinch);
217 mGrabCorner = Toolkit::ImageView::New(RESIZE_HANDLE_IMAGE);
218 mGrabCorner.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::ALL_DIMENSIONS);
219 mGrabCorner.SetProperty(Dali::Actor::Property::NAME, "GrabCorner");
220 mGrabCorner.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_RIGHT);
221 mGrabCorner.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_RIGHT);
222 mGrabCorner.SetProperty(Actor::Property::POSITION, Vector2(-BORDER_WIDTH, -BORDER_WIDTH));
223 mGrabCorner.SetProperty(Actor::Property::OPACITY, 0.6f);
225 Layer grabCornerLayer = Layer::New();
226 grabCornerLayer.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_RIGHT);
227 grabCornerLayer.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_RIGHT);
228 grabCornerLayer.Add(mGrabCorner);
229 mDesiredBox.Add(grabCornerLayer);
231 mPanGestureDetector = PanGestureDetector::New();
232 mPanGestureDetector.Attach(mGrabCorner);
233 mPanGestureDetector.DetectedSignal().Connect(this, &ImageScalingAndFilteringController::OnPan);
235 // Tie-in input event handlers:
236 window.KeyEventSignal().Connect(this, &ImageScalingAndFilteringController::OnKeyEvent);
244 * Create the GUI controls which float above the scene
246 void CreateControls()
248 Window window = mApplication.GetWindow();
249 Vector2 windowSize = window.GetSize();
251 Dali::Layer controlsLayer = Dali::Layer::New();
252 controlsLayer.SetResizePolicy(ResizePolicy::SIZE_RELATIVE_TO_PARENT, Dimension::ALL_DIMENSIONS);
253 controlsLayer.SetProperty(Actor::Property::SIZE_MODE_FACTOR, Vector3(1.0f, 1.0f, 1.0f));
254 controlsLayer.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT);
255 controlsLayer.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_LEFT);
256 window.Add(controlsLayer);
258 // Back and next image buttons in corners of window:
259 unsigned int playWidth = std::min(windowSize.x * (1 / 5.0f), 58.0f);
260 Toolkit::ImageView imagePrevious = Toolkit::ImageView::New(DALI_ICON_PLAY, ImageDimensions(playWidth, playWidth));
262 // Last image button:
263 imagePrevious.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT);
264 imagePrevious.RotateBy(Radian(3.14159265358979323846f), Vector3(0, 1.0f, 0));
265 imagePrevious.SetProperty(Actor::Property::POSITION_Y, playWidth * 0.5f);
266 imagePrevious.SetProperty(Actor::Property::POSITION_X, playWidth + playWidth * 0.5f);
267 imagePrevious.SetProperty(Actor::Property::OPACITY, 0.6f);
268 controlsLayer.Add(imagePrevious);
269 imagePrevious.SetProperty(Dali::Actor::Property::NAME, PREVIOUS_BUTTON_ID);
270 imagePrevious.TouchedSignal().Connect(this, &ImageScalingAndFilteringController::OnControlTouched);
272 // Next image button:
273 Toolkit::ImageView imageNext = Toolkit::ImageView::New(DALI_ICON_PLAY, ImageDimensions(playWidth, playWidth));
274 imageNext.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_RIGHT);
275 imageNext.SetProperty(Actor::Property::POSITION_Y, playWidth * 0.5f);
276 imageNext.SetProperty(Actor::Property::POSITION_X, windowSize.x - playWidth * 0.5f);
277 imageNext.SetProperty(Actor::Property::OPACITY, 0.6f);
278 controlsLayer.Add(imageNext);
279 imageNext.SetProperty(Dali::Actor::Property::NAME, NEXT_BUTTON_ID);
280 imageNext.TouchedSignal().Connect(this, &ImageScalingAndFilteringController::OnControlTouched);
282 // Buttons to popup selectors for fitting and sampling modes:
284 // Wrapper table to hold two buttons side by side:
285 Toolkit::TableView modesGroupBackground = Toolkit::TableView::New(1, 2);
286 modesGroupBackground.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
287 modesGroupBackground.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
288 modesGroupBackground.SetBackgroundColor(BACKGROUND_COLOUR);
289 modesGroupBackground.SetCellPadding(Size(MARGIN_SIZE * 0.5f, MARGIN_SIZE));
290 modesGroupBackground.SetFitHeight(0);
292 modesGroupBackground.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_LEFT);
293 modesGroupBackground.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_LEFT);
294 modesGroupBackground.SetProperty(Actor::Property::POSITION, Vector2(0.0f, 0.0f));
296 controlsLayer.Add(modesGroupBackground);
299 // Vertical table to hold label and button:
300 Toolkit::TableView fittingModeGroup = Toolkit::TableView::New(2, 1);
301 fittingModeGroup.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
302 fittingModeGroup.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
303 fittingModeGroup.SetBackgroundColor(BACKGROUND_COLOUR);
304 fittingModeGroup.SetCellPadding(Size(MARGIN_SIZE * 0.5f, MARGIN_SIZE * 0.5f));
305 fittingModeGroup.SetFitHeight(0);
306 fittingModeGroup.SetFitHeight(1);
308 TextLabel label = TextLabel::New("Image fitting mode:");
309 label.SetStyleName(STYLE_LABEL_TEXT);
310 fittingModeGroup.Add(label);
312 Toolkit::PushButton button = CreateButton(FITTING_BUTTON_ID, StringFromScalingMode(mFittingMode));
313 fittingModeGroup.Add(button);
314 mFittingModeButton = button;
316 modesGroupBackground.Add(fittingModeGroup);
320 // Vertical table to hold label and button:
321 Toolkit::TableView samplingModeGroup = Toolkit::TableView::New(2, 1);
322 samplingModeGroup.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
323 samplingModeGroup.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
324 samplingModeGroup.SetBackgroundColor(BACKGROUND_COLOUR);
325 samplingModeGroup.SetCellPadding(Size(MARGIN_SIZE * 0.5f, MARGIN_SIZE * 0.5f));
326 samplingModeGroup.SetFitHeight(0);
327 samplingModeGroup.SetFitHeight(1);
329 TextLabel label = TextLabel::New("Image sampling mode:");
330 label.SetStyleName(STYLE_LABEL_TEXT);
331 samplingModeGroup.Add(label);
333 Toolkit::PushButton button = CreateButton(SAMPLING_BUTTON_ID, StringFromFilterMode(mSamplingMode));
334 samplingModeGroup.Add(button);
335 mSamplingModeButton = button;
337 modesGroupBackground.Add(samplingModeGroup);
341 Toolkit::PushButton CreateButton(const char* id, const char* label)
343 Toolkit::PushButton button = Toolkit::PushButton::New();
344 button.SetStyleName(STYLE_BUTTON_TEXT);
345 button.SetProperty(Dali::Actor::Property::NAME, id);
346 button.SetProperty(Toolkit::Button::Property::LABEL, label);
347 button.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
348 button.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
349 button.ClickedSignal().Connect(this, &ImageScalingAndFilteringController::OnButtonClicked);
353 Toolkit::Popup CreatePopup()
355 Window window = mApplication.GetWindow();
356 const float POPUP_WIDTH_DP = window.GetSize().GetWidth() * 0.75f;
358 Toolkit::Popup popup = Toolkit::Popup::New();
359 popup.SetProperty(Dali::Actor::Property::NAME, "POPUP");
360 popup.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
361 popup.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
362 popup.SetProperty(Actor::Property::SIZE, Vector2(POPUP_WIDTH_DP, 0.0f));
364 popup.OutsideTouchedSignal().Connect(this, &ImageScalingAndFilteringController::OnPopupOutsideTouched);
369 Toolkit::PushButton CreatePopupButton(Actor parent, const char* id)
371 Toolkit::PushButton button = Toolkit::PushButton::New();
372 button.SetProperty(Dali::Actor::Property::NAME, id);
373 button.SetProperty(Toolkit::Button::Property::LABEL, id);
375 button.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT);
376 button.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_LEFT);
377 button.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
378 button.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
380 button.ClickedSignal().Connect(this, &ImageScalingAndFilteringController::OnButtonClicked);
386 bool OnButtonClicked(Toolkit::Button button)
388 if(button.GetProperty<std::string>(Dali::Actor::Property::NAME) == FITTING_BUTTON_ID)
390 mPopup = CreatePopup();
392 // Four-row table to hold buttons:
393 Toolkit::TableView fittingModes = Toolkit::TableView::New(4, 1);
394 fittingModes.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
395 fittingModes.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
396 fittingModes.SetCellPadding(Size(MARGIN_SIZE, MARGIN_SIZE * 0.5));
397 fittingModes.SetFitHeight(0);
398 fittingModes.SetFitHeight(1);
399 fittingModes.SetFitHeight(2);
400 fittingModes.SetFitHeight(3);
402 CreatePopupButton(fittingModes, StringFromScalingMode(FittingMode::SCALE_TO_FILL));
403 CreatePopupButton(fittingModes, StringFromScalingMode(FittingMode::SHRINK_TO_FIT));
404 CreatePopupButton(fittingModes, StringFromScalingMode(FittingMode::FIT_WIDTH));
405 CreatePopupButton(fittingModes, StringFromScalingMode(FittingMode::FIT_HEIGHT));
407 mPopup.SetContent(fittingModes);
408 mApplication.GetWindow().Add(mPopup);
409 mPopup.SetDisplayState(Toolkit::Popup::SHOWN);
411 else if(button.GetProperty<std::string>(Dali::Actor::Property::NAME) == SAMPLING_BUTTON_ID)
413 mPopup = CreatePopup();
415 // Table to hold buttons for each sampling mode:
416 Toolkit::TableView samplingModes = Toolkit::TableView::New(6, 1);
417 samplingModes.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
418 samplingModes.SetResizePolicy(ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT);
419 samplingModes.SetCellPadding(Size(MARGIN_SIZE, MARGIN_SIZE * 0.5));
420 samplingModes.SetFitHeight(0);
421 samplingModes.SetFitHeight(1);
422 samplingModes.SetFitHeight(2);
423 samplingModes.SetFitHeight(3);
424 samplingModes.SetFitHeight(4);
425 samplingModes.SetFitHeight(5);
427 CreatePopupButton(samplingModes, StringFromFilterMode(SamplingMode::NEAREST));
428 CreatePopupButton(samplingModes, StringFromFilterMode(SamplingMode::LINEAR));
429 CreatePopupButton(samplingModes, StringFromFilterMode(SamplingMode::BOX));
430 CreatePopupButton(samplingModes, StringFromFilterMode(SamplingMode::BOX_THEN_NEAREST));
431 CreatePopupButton(samplingModes, StringFromFilterMode(SamplingMode::BOX_THEN_LINEAR));
432 CreatePopupButton(samplingModes, StringFromFilterMode(SamplingMode::NO_FILTER));
434 mPopup.SetContent(samplingModes);
435 mApplication.GetWindow().Add(mPopup);
436 mPopup.SetDisplayState(Toolkit::Popup::SHOWN);
438 else if(CheckFittingModeButton(button, FittingMode::SCALE_TO_FILL) ||
439 CheckFittingModeButton(button, FittingMode::SHRINK_TO_FIT) ||
440 CheckFittingModeButton(button, FittingMode::FIT_WIDTH) ||
441 CheckFittingModeButton(button, FittingMode::FIT_HEIGHT))
444 else if(CheckSamplingModeButton(button, SamplingMode::NEAREST) ||
445 CheckSamplingModeButton(button, SamplingMode::LINEAR) ||
446 CheckSamplingModeButton(button, SamplingMode::BOX) ||
447 CheckSamplingModeButton(button, SamplingMode::LINEAR) ||
448 CheckSamplingModeButton(button, SamplingMode::BOX_THEN_NEAREST) ||
449 CheckSamplingModeButton(button, SamplingMode::BOX_THEN_LINEAR) ||
450 CheckSamplingModeButton(button, SamplingMode::NO_FILTER))
456 bool CheckFittingModeButton(Actor& button, FittingMode::Type mode)
458 const char* const modeName = StringFromScalingMode(mode);
459 if(button.GetProperty<std::string>(Dali::Actor::Property::NAME) == modeName)
462 mFittingModeButton.SetProperty(Toolkit::Button::Property::LABEL, modeName);
464 mPopup.SetDisplayState(Toolkit::Popup::HIDDEN);
471 bool CheckSamplingModeButton(Actor& button, SamplingMode::Type mode)
473 const char* const modeName = StringFromFilterMode(mode);
474 if(button.GetProperty<std::string>(Dali::Actor::Property::NAME) == modeName)
476 mSamplingMode = mode;
477 mSamplingModeButton.SetProperty(Toolkit::Button::Property::LABEL, modeName);
479 mPopup.SetDisplayState(Toolkit::Popup::HIDDEN);
486 void OnPopupOutsideTouched()
490 mPopup.SetDisplayState(Toolkit::Popup::HIDDEN);
495 bool OnControlTouched(Actor actor, const TouchEvent& event)
497 if(event.GetPointCount() > 0)
499 switch(event.GetState(0))
503 const std::string& name = actor.GetProperty<std::string>(Dali::Actor::Property::NAME);
504 if(name == NEXT_BUTTON_ID)
506 mCurrentPath = mCurrentPath + 1;
507 mCurrentPath = mCurrentPath < NUM_IMAGE_PATHS ? mCurrentPath : 0;
510 else if(name == PREVIOUS_BUTTON_ID)
512 mCurrentPath = mCurrentPath - 1;
513 mCurrentPath = mCurrentPath >= 0 ? mCurrentPath : NUM_IMAGE_PATHS - 1;
528 void OnPinch(Actor actor, const PinchGesture& pinch)
530 if(pinch.GetState() == GestureState::STARTED)
532 mLastPinchScale = pinch.GetScale();
534 const float scale = pinch.GetScale();
536 if(!Equals(scale, mLastPinchScale))
538 if(scale < mLastPinchScale)
540 mImageWindowScale.x = std::max(0.05f, mImageWindowScale.x * 0.9f);
541 mImageWindowScale.y = std::max(0.05f, mImageWindowScale.y * 0.9f);
545 mImageWindowScale.x = std::max(0.05f, std::min(1.0f, mImageWindowScale.x * 1.1f));
546 mImageWindowScale.y = std::max(0.05f, std::min(1.0f, mImageWindowScale.y * 1.1f));
550 mLastPinchScale = scale;
553 void OnPan(Actor actor, const PanGesture& gesture)
555 Window window = mApplication.GetWindow();
556 Vector2 windowSize = window.GetSize();
557 const Vector2& displacement = gesture.GetDisplacement();
559 // 1.0f and 0.75f are the maximum size caps of the resized image, as a factor of window-size.
560 mImageWindowScale.x = std::max(0.05f, std::min(0.95f, mImageWindowScale.x + (displacement.x * 2.0f / windowSize.width)));
561 mImageWindowScale.y = std::max(0.05f, std::min(0.70f, mImageWindowScale.y + (displacement.y * 2.0f / windowSize.height)));
566 void OnKeyEvent(const KeyEvent& event)
568 if(event.GetState() == 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.GetKeyName() == "Right")
584 mImageWindowScale.x = std::max(0.05f, std::min(1.0f, mImageWindowScale.x * 1.1f));
586 else if(event.GetKeyName() == "Left")
588 mImageWindowScale.x = std::max(0.05f, mImageWindowScale.x * 0.9f);
590 else if(event.GetKeyName() == "Up")
592 mImageWindowScale.y = std::max(0.05f, std::min(1.0f, mImageWindowScale.y * 1.1f));
594 else if(event.GetKeyName() == "Down")
596 mImageWindowScale.y = std::max(0.05f, mImageWindowScale.y * 0.9f);
598 else if(event.GetKeyName() == "o")
600 mImageWindowScale.x = std::max(0.05f, mImageWindowScale.x * 0.9f);
601 mImageWindowScale.y = std::max(0.05f, mImageWindowScale.y * 0.9f);
603 else if(event.GetKeyName() == "p")
605 mImageWindowScale.x = std::max(0.05f, std::min(1.0f, mImageWindowScale.x * 1.1f));
606 mImageWindowScale.y = std::max(0.05f, std::min(1.0f, mImageWindowScale.y * 1.1f));
608 else if(event.GetKeyName() == "n")
610 mCurrentPath = mCurrentPath + 1;
611 mCurrentPath = mCurrentPath < NUM_IMAGE_PATHS ? mCurrentPath : 0;
613 else if(event.GetKeyName() == "b")
615 mCurrentPath = mCurrentPath - 1;
616 mCurrentPath = mCurrentPath >= 0 ? mCurrentPath : NUM_IMAGE_PATHS - 1;
618 // Cycle filter and scaling modes:
619 else if(event.GetKeyName() == "f")
621 mSamplingMode = NextFilterMode(mSamplingMode);
622 mSamplingModeButton.SetProperty(Toolkit::Button::Property::LABEL, StringFromFilterMode(mSamplingMode));
624 // Cycle filter and scaling modes:
625 else if(event.GetKeyName() == "s")
627 mFittingMode = NextScalingMode(mFittingMode);
628 mFittingModeButton.SetProperty(Toolkit::Button::Property::LABEL, StringFromScalingMode(mFittingMode));
642 mImageLoading = true;
644 const char* const path = IMAGE_PATHS[mCurrentPath];
645 Window window = mApplication.GetWindow();
646 Size imageSize = Vector2(window.GetSize()) * mImageWindowScale;
647 mImageView.SetProperty(Actor::Property::SIZE, imageSize);
650 map[Toolkit::ImageVisual::Property::URL] = path;
651 map[Toolkit::ImageVisual::Property::DESIRED_WIDTH] = imageSize.x;
652 map[Toolkit::ImageVisual::Property::DESIRED_HEIGHT] = imageSize.y;
653 map[Toolkit::ImageVisual::Property::FITTING_MODE] = mFittingMode;
654 map[Toolkit::ImageVisual::Property::SAMPLING_MODE] = mSamplingMode;
656 mImageView.SetProperty(Toolkit::ImageView::Property::IMAGE, map);
661 Window window = mApplication.GetWindow();
662 Vector2 windowSize = window.GetSize();
663 Size imageSize = windowSize * mImageWindowScale;
667 // Border size needs to be modified to take into account the width of the frame.
668 Vector2 borderScale((imageSize + Vector2(BORDER_WIDTH * 2.0f, BORDER_WIDTH * 2.0f)) / windowSize);
669 mDesiredBox.SetProperty(Actor::Property::SIZE, windowSize * borderScale);
673 Application& mApplication;
674 Toolkit::ImageView mDesiredBox; //< Background rectangle to show requested image size.
675 Toolkit::PushButton mFittingModeButton;
676 Toolkit::PushButton mSamplingModeButton;
677 Toolkit::Popup mPopup;
678 PinchGestureDetector mPinchDetector;
679 float mLastPinchScale;
680 Toolkit::ImageView mGrabCorner;
681 PanGestureDetector mPanGestureDetector;
682 Toolkit::ImageView mImageView;
683 Vector2 mImageWindowScale;
685 FittingMode::Type mFittingMode;
686 SamplingMode::Type mSamplingMode;
688 bool mQueuedImageLoad;
691 int DALI_EXPORT_API main(int argc, char** argv)
693 Application application = Application::New(&argc, &argv, DEMO_THEME_PATH);
694 ImageScalingAndFilteringController test(application);
695 application.MainLoop();