Peter M. Groen / dali-demo

#ifndef __DALI_DEMO_H__
#define __DALI_DEMO_H__

/*
 * Copyright (c) 2014 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.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <dali/dali.h>
#include <dali-toolkit/dali-toolkit.h>

class Example;

typedef std::vector<Example> ExampleList;
typedef std::map<std::string,Example> ExampleMap;
typedef ExampleList::iterator ExampleListIter;
typedef ExampleList::const_iterator ExampleListConstIter;
typedef ExampleMap::iterator ExampleMapIter;
typedef ExampleMap::const_iterator ExampleMapConstIter;

typedef std::vector<Dali::Toolkit::TableView> TableViewList;
typedef TableViewList::iterator TableViewListIter;
typedef TableViewList::const_iterator TableViewListConstIter;

typedef std::vector<Dali::ImageActor> ImageActorList;
typedef ImageActorList::iterator ImageActorListIter;
typedef ImageActorList::const_iterator ImageActorListConstIter;

typedef std::vector<Dali::Animation> AnimationList;
typedef AnimationList::iterator AnimationListIter;
typedef AnimationList::const_iterator AnimationListConstIter;


/**
 * Example information
 *
 * Represents a single Example.
 */
struct Example
{
  // Constructors

  /**
   * @param[in] name unique name of example
   * @param[in] title The caption for the example to appear on a tile button.
   */
  Example(std::string name, std::string title)
  : name(name),
    title(title)
  {
  }

  Example()
  {
  }

  // Data

  std::string name;                       ///< unique name of example
  std::string title;                      ///< title (caption) of example to appear on tile button.
};



/**
 * Dali-Demo instance
 */
class DaliTableView : public Dali::ConnectionTracker
{
public:

  DaliTableView(Dali::Application& application);
  ~DaliTableView();

public:

  /**
   * Adds an Example to our demo showcase
   *
   * @param[in] example The Example description.
   *
   * @note Should be called before the Application MainLoop is started.
   */
  void AddExample(Example example);

  /**
   * Sets the background image PATH.
   *
   * @param[in] imagePath The file path to the image to use as the background.
   *
   * @note Should be called before the Application MainLoop is started.
   */
  void SetBackgroundPath( std::string imagePath );

  /**
   * Sorts the example list alphabetically by Title if parameter is true.
   *
   * @param[in] sortAlphabetically If true, example list is sorted alphabetically.
   *
   * @note Should be called before the Application MainLoop is started.
   * @note By default the examples are NOT sorted alphabetically by Title.
   */
  void SortAlphabetically( bool sortAlphabetically );

private: // Application callbacks & implementation

  /**
   * Shape enum for create function
   */
  enum ShapeType
  {
    CIRCLE,
    SQUARE
  };

  /**
   * Initialize application.
   *
   * @param[in] app Application instance
   */
  void Initialize( Dali::Application& app );

  /**
   * Populates the contents (ScrollView) with all the
   * Examples that have been Added using the AddExample(...)
   * call
   */
  void Populate();

  /**
   * Rotate callback from the device.
   *
   * @param[in] orientation that device notified.
   */
  void OrientationChanged( Dali::Orientation orientation );

  /**
   * Rotates RootActor orientation to that specified.
   *
   * @param[in] degrees The requested angle.
   */
  void Rotate( unsigned int degrees );

  /**
   * Creates a tile for the main menu and toolbar.
   *
   * @param[in] name The unique name for this Tile
   * @param[in] title The text caption that appears on the Tile
   * @param[in] parentSize Tile's parent size.
   * @param[in] addBackground Whether to add a background graphic to the tile or not
   *
   * @return The Actor for the created tile.
   */
  Dali::Actor CreateTile( const std::string& name, const std::string& title, const Dali::Size& parentSize, bool addBackground );

  /**
   * Create a stencil image
   *
   * @return The stencil image
   */
  Dali::ImageActor NewStencilImage();

  // Signal handlers

  /**
   * Signal emitted when any tile has been pressed
   *
   * @param[in] actor The Actor representing this tile.
   * @param[in] event The TouchEvent
   *
   * @return Consume flag
   */
  bool OnTilePressed( Dali::Actor actor, const Dali::TouchEvent& event );

  /**
   * Signal emitted when the pressed animation has completed.
   *
   * @param[in] source The animation source.
   */
  void OnPressedAnimationFinished(Dali::Animation& source);

  /**
   * Signal emitted when the button has been clicked
   *
   * @param[in] button The Button that is clicked.
   *
   * @return Consume flag
   */
  bool OnButtonClicked( Dali::Toolkit::Button& button );

  /**
   * Signal emitted when scrolling has started.
   *
   * @param[in] position The current position of the scroll contents.
   */
  void OnScrollStart(const Dali::Vector3& position);

  /**
   * Signal emitted when scrolling has completed.
   *
   * @param[in] position The current position of the scroll contents.
   */
  void OnScrollComplete(const Dali::Vector3& position);

  /**
   * Signal emitted when any Sensitive Actor has been touched
   * (other than those touches consumed by OnTilePressed)
   *
   * @param[in] actor The Actor touched.
   * @param[in] event The TouchEvent
   *
   * @return Consume flag
   */
  bool OnScrollTouched( Dali::Actor actor, const Dali::TouchEvent& event );

  /**
   * Setup the effect on the scroll view
   */
  void ApplyScrollViewEffect();

  /**
   * Setup the inner cube effect
   */
  void SetupInnerPageCubeEffect();

  /**
   * Apply the scroll view effect to a page
   */
  void ApplyEffectToPage(Dali::Actor page, const Dali::Vector3& tableRelativeSize);

  /**
   * Apply a custom effect scroll view effect to a page
   */
  void ApplyCustomEffectToPage(Dali::Actor page);

  /**
   * Apply a shader effect to a table tile
   */
  void ApplyEffectToTile(Dali::Actor tile);

  /**
   * Apply effect to the content of a tile
   */
  void ApplyEffectToTileContent(Dali::Actor tileContent);

  /**
   * Key event handler
   */
  void OnKeyEvent( const Dali::KeyEvent& event );

  /**
   * Create a depth field background
   *
   * @param[in] addToLayer Add the graphics to this layer
   */
  void SetupBackground( Dali::Actor addToLayer, const Dali::Vector2& size );

  /**
   * Create background actors for the given layer
   *
   * @param[in] layer The layer to add the actors to
   * @param[in] count The number of actors to generate
   * @param[in] distanceField The distance field bitmap to use
   * @param[in] size The size of the actor
   */
  void AddBackgroundActors( Dali::Actor layer, int count, Dali::BitmapImage distanceField, const Dali::Vector2& size );

  /**
   * Create a bitmap with the specified shape and also output a distance field
   *
   * @param[in] shapeType The shape to generate
   * @param[in] size The size of the bitmap to create
   * @param[out] imageOut The return bitmap
   * @param[out] distanceFieldOut The return depth field alpha map
   */
  void CreateShapeImage( ShapeType shapeType, const Dali::Size& size, Dali::BitmapImage& distanceFieldOut );

  /**
   * Generate a square bit pattern and depth field
   *
   * @param[in] size The size of the bitmap to create
   * @param[out] imageOut The return bitmap
   * @param[out] distanceFieldOut The return depth field alpha map
   */
  void GenerateSquare( const Dali::Size& size, std::vector<unsigned char>& distanceFieldOut );

  /**
   * Generate a circle bit pattern and depth field
   *
   * @param[in] size The size of the bitmap to create
   * @param[out] imageOut The return bitmap
   * @param[out] distanceFieldOut The return depth field alpha map
   */
  void GenerateCircle( const Dali::Size& size, std::vector<unsigned char>& distanceFieldOut );

  /**
   * Creates the logo.
   *
   * @param[in] imagePath The path to the image file to load
   *
   * @return The created image actor
   */
  Dali::ImageActor CreateLogo( std::string imagePath );

  /**
   * Callback for when the logo image is loaded
   *
   * @param[in] image The loaded logo image
   */
  void OnLogoLoaded( Dali::Image image );

  /**
   * Timer handler for ending background animation
   *
   * @return Return value for timer handler
   */
  bool PauseBackgroundAnimation();

  /**
   * Pause all animations
   */
  void PauseAnimation();

  /**
   * Resume all animations
   */
  void PlayAnimation();

  /**
   * Callback when the keyboard focus is going to be changed.
   *
   * @param[in] current The current focused actor
   * @param[in] proposed The actor proposed by the keyboard focus manager to move the focus to
   * @param[in] direction The direction to move the focus
   * @return The actor to move the keyboard focus to.
   */
  Dali::Actor OnKeyboardPreFocusChange( Dali::Actor current, Dali::Actor proposed, Dali::Toolkit::Control::KeyboardFocusNavigationDirection direction );

  /**
   * Callback when the keyboard focused actor is activated.
   *
   * @param[in] activatedActor The activated actor
   */
  void OnFocusedActorActivated( Dali::Actor activatedActor );

private:

  Dali::Application&              mApplication;         ///< Application instance.
  Dali::Layer                     mBackgroundLayer;     ///< Background resides on a separate layer.
  Dali::Toolkit::TableView        mRootActor;           ///< All content (excluding background is anchored to this Actor)
  Dali::Animation                 mRotateAnimation;     ///< Animation to rotate and resize mRootActor.
  Dali::ImageActor                mBackground;          ///< Background's static image.
  Dali::ImageActor                mLogo;                ///< Logo's static image.
  Dali::Animation                 mPressedAnimation;    ///< Button press scaling animation.
  Dali::Layer                     mScrollViewLayer;     ///< ScrollView resides on a separate layer.
  Dali::Toolkit::ScrollView       mScrollView;          ///< ScrollView container (for all Examples)
  Dali::Toolkit::ScrollViewEffect mScrollViewEffect;    ///< Effect to be applied to the scroll view
  bool                            mScrolling;           ///< Flag indicating whether view is currently being scrolled
  Dali::Toolkit::RulerPtr         mScrollRulerX;        ///< ScrollView X (horizontal) ruler
  Dali::Toolkit::RulerPtr         mScrollRulerY;        ///< ScrollView Y (vertical) ruler
  Dali::Toolkit::TableView        mButtons;             ///< Navigation buttons
  ExampleList                     mExampleList;         ///< List of examples.
  ExampleMap                      mExampleMap;          ///< Map LUT for examples.
  TableViewList                   mTableViewList;       ///< List of tableviews
  Dali::Actor                     mPressedActor;        ///< The currently pressed actor.
  int                             mTotalPages;          ///< Total pages within scrollview.
  std::string                     mBackgroundImagePath; ///< The path to the background image.
  bool                            mSortAlphabetically;  ///< Sort examples alphabetically.

  Dali::ActorContainer            mTableViewImages;     ///< Offscreen render of tableview
  Dali::ActorContainer            mBackgroundActors;    ///< List of background actors used in the effect

  AnimationList                   mBackgroundAnimations;///< List of background bubble animations
  Dali::Timer                     mAnimationTimer;      ///< Timer used to turn off animation after a specific time period
  bool                            mBackgroundAnimsPlaying; ///< Are background animations playing
};

#endif // __DALI_DEMO_H__