Updated demos to use DALi clang-format
[platform/core/uifw/dali-demo.git] / examples / animated-images / animated-images-example.cpp
index b9ec308..9db95e4 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  */
 
 #include <dali-toolkit/dali-toolkit.h>
-
-#include "shared/utility.h"
+#include <dali-toolkit/devel-api/controls/control-devel.h>
+#include <dali-toolkit/devel-api/controls/table-view/table-view.h>
+#include <dali-toolkit/devel-api/visuals/animated-image-visual-actions-devel.h>
 
 using namespace Dali;
 using namespace Dali::Toolkit;
 
 namespace
 {
-const char * const PLAY_ICON( DEMO_IMAGE_DIR "icon-play.png" );
-const char * const PLAY_ICON_SELECTED( DEMO_IMAGE_DIR "icon-play-selected.png" );
+const char* const PLAY_ICON_UNSELECTED(DEMO_IMAGE_DIR "icon-play.png");
+const char* const PLAY_ICON_SELECTED(DEMO_IMAGE_DIR "icon-play-selected.png");
 
-const char* const STATIC_GIF_DOG( DEMO_IMAGE_DIR "dog-static.gif" );
-const char* const ANIMATE_GIF_DOG( DEMO_IMAGE_DIR "dog-anim.gif" );
+const unsigned int ANIMATED_IMAGE_COUNT = 2;
 
-const char* const STATIC_GIF_LOGO( DEMO_IMAGE_DIR "dali-logo-static.gif" );
-const char* const ANIMATE_GIF_LOGO( DEMO_IMAGE_DIR "dali-logo-anim.gif" );
+const char* ANIMATED_IMAGE_URLS[ANIMATED_IMAGE_COUNT] =
+  {
+    DEMO_IMAGE_DIR "dog-anim.webp",
+    DEMO_IMAGE_DIR "dali-logo-anim.gif"};
 
-const Vector4 DIM_COLOR( 0.85f, 0.85f, 0.85f, 0.85f );
-}
+const char* ANIMATED_ARRAY_URL_FORMATS[ANIMATED_IMAGE_COUNT] =
+  {
+    DEMO_IMAGE_DIR "dog-anim-%03d.png",      // Images are named dog-anim-001.png, dog-anim-002.png, etc.
+    DEMO_IMAGE_DIR "dali-logo-anim-%03d.png" // Images are named dali-logo-anim-001.png, dali-logo-anim-002.png, etc.
+};
 
-/* This example shows how to display a GIF image.
- * First a static GIF image is loaded and then when the user presses on the "Play" icon,
- * the static image is replaced by an animated one
- */
+int ANIMATED_ARRAY_NUMBER_OF_FRAMES[ANIMATED_IMAGE_COUNT] =
+  {
+    8,
+    15};
+
+const char* ANIMATION_RADIO_BUTTON_NAME("Animation Image");
+const char* ARRAY_RADIO_BUTTON_NAME("Array");
+
+/// Structure to specify the layout information for the animated images views.
+struct ImageLayoutInfo
+{
+  Vector3 anchorPoint;
+  Vector3 parentOrigin;
+  float   yPosition;
+};
+
+ImageLayoutInfo IMAGE_LAYOUT_INFO[ANIMATED_IMAGE_COUNT] =
+  {
+    {AnchorPoint::BOTTOM_CENTER, ParentOrigin::CENTER, -80.0f},
+    {AnchorPoint::TOP_CENTER, ParentOrigin::CENTER, 80.0f}};
 
+} // unnamed namespace
+
+/**
+ * @brief This demonstrates how to display and control Animated Images.
+ *
+ * - It displays two animated images, an animated dog and an animated DALi logo.
+ * - The images are loaded paused, a play button is overlayed on top of the images to play the animated image.
+ * - Radio buttons at the bottom allow the user to change between Animated Images and a collection of Image Arrays.
+ */
 class AnimatedImageController : public ConnectionTracker
 {
 public:
-
-  AnimatedImageController( Application& application )
-  : mApplication( application )
+  /**
+   * @brief Constructor.
+   * @param[in]  application  A reference to the Application class
+   */
+  AnimatedImageController(Application& application)
+  : mApplication(application),
+    mImageType(ImageType::ANIMATED_IMAGE)
   {
     // Connect to the Application's Init signal
-    mApplication.InitSignal().Connect( this, &AnimatedImageController::Create );
+    mApplication.InitSignal().Connect(this, &AnimatedImageController::Create);
   }
 
-  ~AnimatedImageController()
+private:
+  /**
+   * @brief The image types supported by the application.
+   */
+  enum class ImageType
+  {
+    ANIMATED_IMAGE, ///< Displays Animated Image Files.
+    IMAGE_ARRAY     ///< Displays an array of URLs that are used as an animated image.
+  };
+
+  /**
+   * @brief Called to initialise the application content.
+   * @param[in]  application  A reference to the Application class
+   */
+  void Create(Application& application)
   {
-    // Nothing to do here;
+    // Set the window background color and connect to the window's key signal to allow Back and Escape to exit.
+    Window window = application.GetWindow();
+    window.SetBackgroundColor(Color::WHITE);
+    window.KeyEventSignal().Connect(this, &AnimatedImageController::OnKeyEvent);
+
+    // Create the animated image-views
+    CreateAnimatedImageViews(window);
+
+    // Create radio buttons to change between Animated images and Image Arrays
+    CreateRadioButtonLayout(window);
+
+    // Create a tap gesture detector to use to pause the animated images
+    mTapDetector = TapGestureDetector::New();
+    mTapDetector.DetectedSignal().Connect(this, &AnimatedImageController::OnTap);
   }
 
-  // The Init signal is received once (only) during the Application lifetime
-  void Create( Application& application )
+  /**
+   * @brief Creates and lays out radio buttons to allow changing between the different image types.
+   */
+  void CreateRadioButtonLayout(Window& window)
   {
-    // Get a handle to the stage
-    Stage stage = Stage::GetCurrent();
-    stage.SetBackgroundColor( Color::WHITE );
-    // Tie-in input event handlers:
-    stage.KeyEventSignal().Connect( this, &AnimatedImageController::OnKeyEvent );
+    mAnimatedImageButton = CreateRadioButton(ANIMATION_RADIO_BUTTON_NAME, true);
+    mArrayButton         = CreateRadioButton(ARRAY_RADIO_BUTTON_NAME, false);
 
-    mActorDog = CreateGifViewWithOverlayButton( STATIC_GIF_DOG );
-    mActorDog.SetAnchorPoint( AnchorPoint::BOTTOM_CENTER );
-    mActorDog.SetY( -100.f );
-    stage.Add( mActorDog );
+    Toolkit::TableView radioButtonLayout = Toolkit::TableView::New(1, 2);
+    radioButtonLayout.SetProperty(Dali::Actor::Property::NAME, "RadioButtonsLayout");
+    radioButtonLayout.SetResizePolicy(ResizePolicy::FIT_TO_CHILDREN, Dimension::HEIGHT);
+    radioButtonLayout.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
+    radioButtonLayout.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_CENTER);
+    radioButtonLayout.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_CENTER);
+    radioButtonLayout.SetFitHeight(0);
+    radioButtonLayout.AddChild(mAnimatedImageButton, TableView::CellPosition(0, 0));
+    radioButtonLayout.AddChild(mArrayButton, TableView::CellPosition(0, 1));
+    radioButtonLayout.SetCellAlignment(TableView::CellPosition(0, 0),
+                                       HorizontalAlignment::CENTER,
+                                       VerticalAlignment::CENTER);
+    radioButtonLayout.SetCellAlignment(TableView::CellPosition(0, 1),
+                                       HorizontalAlignment::CENTER,
+                                       VerticalAlignment::CENTER);
+    radioButtonLayout.SetProperty(Actor::Property::POSITION_Y, -10.0f);
 
-    mActorLogo = CreateGifViewWithOverlayButton( STATIC_GIF_LOGO );
-    mActorLogo.SetAnchorPoint( AnchorPoint::TOP_CENTER );
-    mActorLogo.SetY( 100.f );
-    stage.Add( mActorLogo );
+    window.Add(radioButtonLayout);
   }
 
   /**
-   * Create the gif image view with an overlay play button.
+   * @brief Creates a radio button.
+   * @param[in]  name      The name of the button
+   * @param[in]  selected  Whether the button is selected
+   * @return The created radio-button
    */
-  Toolkit::ImageView CreateGifViewWithOverlayButton( const std::string& gifUrl  )
+  RadioButton CreateRadioButton(const char* const name, bool selected)
   {
-    Toolkit::ImageView imageView = Toolkit::ImageView::New( gifUrl );
-    imageView.SetParentOrigin( ParentOrigin::CENTER );
+    RadioButton radioButton = Toolkit::RadioButton::New(name);
+    radioButton.SetProperty(Button::Property::SELECTED, selected);
+    radioButton.ClickedSignal().Connect(this, &AnimatedImageController::OnRadioButtonClicked);
+    return radioButton;
+  }
 
-    // Create a push button, and add it as child of the image view
-    Toolkit::PushButton animateButton = Toolkit::PushButton::New();
-    animateButton.SetUnselectedImage( PLAY_ICON );
-    animateButton.SetSelectedImage( PLAY_ICON_SELECTED );
-    animateButton.SetParentOrigin( ParentOrigin::CENTER );
-    animateButton.SetAnchorPoint( AnchorPoint::CENTER );
-    animateButton.ClickedSignal().Connect( this, &AnimatedImageController::OnPlayButtonClicked );
-    imageView.Add( animateButton );
+  /**
+   * @brief Creates the required animated image views.
+   */
+  void CreateAnimatedImageViews(Window window)
+  {
+    for(unsigned int index = 0; index < ANIMATED_IMAGE_COUNT; ++index)
+    {
+      Control& control = (index == 0) ? mActorDog : mActorLogo;
+      if(control)
+      {
+        // Remove the previous control from the window, it's resources (and children) will be deleted automatically
+        control.Unparent();
+      }
+
+      // Create and lay out the image view according to the index
+      control = Toolkit::ImageView::New();
+      control.SetProperty(Toolkit::ImageView::Property::IMAGE, SetupViewProperties(mImageType, index));
+      control.SetProperty(Actor::Property::ANCHOR_POINT, IMAGE_LAYOUT_INFO[index].anchorPoint);
+      control.SetProperty(Actor::Property::PARENT_ORIGIN, IMAGE_LAYOUT_INFO[index].parentOrigin);
+      control.SetProperty(Actor::Property::POSITION_Y, IMAGE_LAYOUT_INFO[index].yPosition);
+
+      control.SetProperty(Actor::Property::SIZE, Vector2(300, 300));
 
-    // Apply dim color on the gif view and the play button
-    imageView.SetColor( DIM_COLOR );
+      // We do not want the animated image playing when it's added to the window.
+      PauseAnimatedImage(control);
 
-    return imageView;
+      window.Add(control);
+    }
   }
 
-  bool OnPlayButtonClicked( Toolkit::Button button )
+  /**
+   * @brief Plays the passed in animated image.
+   * @details Also sets up the control so it can be paused when tapped.
+   * @param[in]  control  The animated image to play
+   */
+  void PlayAnimatedImage(Control& control)
   {
-    Stage stage = Stage::GetCurrent();
+    DevelControl::DoAction(control,
+                           ImageView::Property::IMAGE,
+                           DevelAnimatedImageVisual::Action::PLAY,
+                           Property::Value());
 
-    // With play button clicked, the static gif is replaced with animated gif.
-    if( button.GetParent() ==  mActorDog )
+    if(mTapDetector)
     {
-      // remove the static gif view, the play button is also removed as its child.
-      stage.Remove( mActorDog );
-
-      mActorDog = Toolkit::ImageView::New( ANIMATE_GIF_DOG );
-      mActorDog.SetParentOrigin( ParentOrigin::CENTER );
-      mActorDog.SetAnchorPoint( AnchorPoint::BOTTOM_CENTER );
-      mActorDog.SetY( -100.f );
-      stage.Add( mActorDog );
+      mTapDetector.Attach(control);
     }
-    else // button.GetParent() ==  mActorLogo
+  }
+
+  /**
+   * @brief Pauses the animated image.
+   * @details Adds a Play button to the control and sets both up so that the animated image can be played again when
+   *          the button is tapped.
+   * @param[in]  control  The animated image to pause
+   */
+  void PauseAnimatedImage(Control& control)
+  {
+    DevelControl::DoAction(control,
+                           ImageView::Property::IMAGE,
+                           DevelAnimatedImageVisual::Action::PAUSE,
+                           Property::Value());
+
+    // Create a push button, and add it as child of the control
+    Toolkit::PushButton animateButton = Toolkit::PushButton::New();
+    animateButton.SetProperty(Toolkit::Button::Property::UNSELECTED_BACKGROUND_VISUAL, PLAY_ICON_UNSELECTED);
+    animateButton.SetProperty(Toolkit::Button::Property::SELECTED_BACKGROUND_VISUAL, PLAY_ICON_SELECTED);
+    animateButton.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::CENTER);
+    animateButton.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
+    animateButton.ClickedSignal().Connect(this, &AnimatedImageController::OnPlayButtonClicked);
+    control.Add(animateButton);
+
+    if(mTapDetector)
     {
-      // remove the static gif view, the play button is also removed as its child.
-      stage.Remove( mActorLogo );
-
-      mActorLogo = Toolkit::ImageView::New( ANIMATE_GIF_LOGO );
-      mActorLogo.SetParentOrigin( ParentOrigin::CENTER );
-      mActorLogo.SetAnchorPoint( AnchorPoint::TOP_CENTER );
-      mActorLogo.SetY( 100.f );
-      stage.Add( mActorLogo );
+      mTapDetector.Detach(control);
     }
+  }
+
+  /**
+   * @brief Called when the play button is clicked.
+   * @details This method is used to start playing the parent image-view of the clicked button.
+   * @param[in]  button  The button that has been clicked
+   * @return We return true to state that we handled the event
+   */
+  bool OnPlayButtonClicked(Toolkit::Button button)
+  {
+    Control control = (button.GetParent() == mActorDog) ? mActorDog : mActorLogo;
+    PlayAnimatedImage(control);
+
+    button.Unparent();
+
     return true;
   }
 
+  /**
+   * @brief Called when the animated image views are tapped.
+   * @details This method is used to pause the tapped animated image view.
+   * @param[in]  actor  The actor that's tapped
+   */
+  void OnTap(Dali::Actor actor, const Dali::TapGesture& /* tap */)
+  {
+    Control control = (actor == mActorDog) ? mActorDog : mActorLogo;
+    PauseAnimatedImage(control);
+  }
 
+  /**
+   * @brief Called when a radio button is clicked.
+   * @details This method is used to change between the different image types.
+   * @param[in]  button  The clicked radio-button
+   * @return We return true to state that we handled the event.
+   *
+   */
+  bool OnRadioButtonClicked(Toolkit::Button button)
+  {
+    mImageType = (button == mAnimatedImageButton) ? ImageType::ANIMATED_IMAGE : ImageType::IMAGE_ARRAY;
+
+    CreateAnimatedImageViews(mApplication.GetWindow());
+    return true;
+  }
+
+  /**
+   * @brief Called when any key event is received.
+   *
+   * Will use this to quit the application if Back or the Escape key is received
+   * @param[in] event The key event information
+   */
   void OnKeyEvent(const KeyEvent& event)
   {
-    if(event.state == KeyEvent::Down)
+    if(event.GetState() == KeyEvent::DOWN)
     {
-      if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
+      if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
       {
         mApplication.Quit();
       }
     }
   }
 
+  /**
+   * @brief Sets up the view properties appropriately.
+   * @param[in]  type   The Image type
+   * @param[in]  index  The index
+   * @return The set up property value
+   */
+  Property::Value SetupViewProperties(ImageType type, int index)
+  {
+    Property::Map map;
+
+    AddUrl(map, type, index);
+    AddCache(map, type, index);
+    return Property::Value(map);
+  }
+
+  /**
+   * @brief Adds the URL to the given map appropriately.
+   * @param[in/out]  map    The map to add the URL details to
+   * @param[in]      type   The Image type
+   * @param[in]      index  The index
+   */
+  void AddUrl(Property::Map& map, ImageType type, int index)
+  {
+    if(type == ImageType::ANIMATED_IMAGE)
+    {
+      map.Add(Toolkit::ImageVisual::Property::URL, Property::Value(ANIMATED_IMAGE_URLS[index]));
+    }
+    else
+    {
+      Property::Array frameUrls;
+      for(int i = 1; i <= ANIMATED_ARRAY_NUMBER_OF_FRAMES[index]; ++i)
+      {
+        char* buffer;
+        int   len = asprintf(&buffer, ANIMATED_ARRAY_URL_FORMATS[index], i);
+        if(len > 0)
+        {
+          std::string frameUrl(buffer);
+          free(buffer);
+          frameUrls.Add(Property::Value(frameUrl));
+        }
+      }
+      map.Add(Toolkit::ImageVisual::Property::URL, Property::Value(frameUrls));
+    }
+  }
+
+  /**
+   * @brief Adds the cache properties, if required to the map.
+   * @param[in/out]  map    The map to add the URL details to
+   * @param[in]      type   The Image type
+   * @param[in]      index  The index
+   */
+  void AddCache(Property::Map& map, ImageType type, int index)
+  {
+    if(type == ImageType::IMAGE_ARRAY)
+    {
+      map
+        .Add(Toolkit::ImageVisual::Property::BATCH_SIZE, 4)
+        .Add(Toolkit::ImageVisual::Property::CACHE_SIZE, 10)
+        .Add(Toolkit::ImageVisual::Property::FRAME_DELAY, 150);
+    }
+  }
+
 private:
-  Application&  mApplication;
-  Toolkit::ImageView mActorDog;
-  Toolkit::ImageView mActorLogo;
+  Application& mApplication; ///< A reference to the application.
+
+  Toolkit::ImageView mActorDog;  ///< The current dog image view.
+  Toolkit::ImageView mActorLogo; ///< The current logo image view.
+
+  Toolkit::RadioButton mAnimatedImageButton; ///< The Animated Image Radio Button.
+  Toolkit::RadioButton mArrayButton;         ///< The Array Radio Button.
+
+  TapGestureDetector mTapDetector; ///< The tap detector.
+
+  ImageType mImageType; ///< The current Image type.
 };
 
-// Entry point for Linux & Tizen applications
-//
-int DALI_EXPORT_API main( int argc, char **argv )
+int DALI_EXPORT_API main(int argc, char** argv)
 {
-  Application application = Application::New( &argc, &argv );
+  Application application = Application::New(&argc, &argv);
 
-  AnimatedImageController test( application );
+  AnimatedImageController test(application);
 
   application.MainLoop();