/*

* Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  SVG Engine header file

 *

*/

#ifndef __INC_CSVGENGINEIMPL__

#define __INC_CSVGENGINEIMPL__

#if !defined(__E32BASE_H__)

#include <e32base.h>

#endif

#include <fbs.h>

#include "SVGEngineInterfaceImpl.h"

#include "GfxAffineTransform.h"

#include "SVGEvent.h"

#include "SVGDocumentImpl.h"

#include "SVGRequestObserver.h"

#include "SVGImageElementImpl.h"

#include "SVGFourPointRect.h"

#include "SVGListener.h"

#include "SVGFontHashMap.h"

#include "SvgBitmapFontProvider.h"

#include <SVGRendererId.h>

// Svg Engine states

enum TSvgEngineState

    {

    ESVGEngineRunning,

    ESVGEnginePaused,

    ESVGEngineNotStarted,

    ESVGEngineStopped

    };

typedef TUint8      TAnimStatus;

class   CSvgSchemaData;

class   CSvgElementImpl;

class   MXmlDOMImplementation;

class   CGfx2dGc;

class   CSvgEventHandler;

class   MSvgEventReceiver;

class   CSvgErrorImpl;

class   CSvgAElementImpl;

class   CSvgTextAreaElementImpl;

class   CSvgTextElementImpl;

class   CSvgExternalDataHandler;

class   MSvgDataRequester;

// temporary for debugging

class   CSvgTimer;

// temporary for debugging

//This includes the main rendering loop.

/**

 * Class description goes here.

 *

 *  @lib SVGEngine.lib

 *  @since 1.0

 */

class CSvgEngineImpl : public CBase, public MSVGImageLoadingObserver

    {

    public: // Constructor & Destructor

        static CSvgEngineImpl* NewL(CSvgBitmapFontProvider *aSvgBitmapFontProvider);

        static CSvgEngineImpl* NewLC(CSvgBitmapFontProvider *aSvgBitmapFontProvider);

        void ConstructL(CSvgBitmapFontProvider *aSvgBitmapFontProvider);

        /**

         * Two phase constructor

         *

         * @since 1.0

         * @param aFrameBuffer - Pointer to a buffer where the SVG document raster is drawn

         * @param aReqObserver - Pointer to a client side object that implements the MSvgRequestObserver interface

         * @return An instance of the SVG Engine

         */

        static CSvgEngineImpl*  NewL( CFbsBitmap* aFrameBuffer,

                                      MSvgRequestObserver* aReqObserver, TFontSpec& aFontSpec, CSvgBitmapFontProvider *aSvgBitmapFontProvider );

        /**

         * Two phase constructor

         *

         * @since 1.0

         * @param aFrameBuffer - Pointer to a buffer where the SVG document raster is drawn

         * @param aReqObserver - Pointer to a client side object that implements the MSvgRequestObserver interface

         * @return An instance of the SVG Engine

         */

        static CSvgEngineImpl* NewLC( CFbsBitmap* aFrameBuffer,

                                       MSvgRequestObserver* aReqObserver, TFontSpec& aFontSpec, CSvgBitmapFontProvider *aSvgBitmapFontProvider );

        /**

         * Destructor

         *

         * @since 1.0

         * @param None

         * @return None

         */

        virtual ~CSvgEngineImpl();

        static CSvgEngineImpl*  NewL( CFbsBitmap* aFrameBuffer,

                                      MSvgRequestObserver* aReqObserver, TFontSpec& aFontSpec, CSvgBitmapFontProvider *aSvgBitmapFontProvider,SVGRendererId aRendererType );

        static CSvgEngineImpl* NewLC( CFbsBitmap* aFrameBuffer,

                                       MSvgRequestObserver* aReqObserver, TFontSpec& aFontSpec, CSvgBitmapFontProvider *aSvgBitmapFontProvider,SVGRendererId aRendererType );

    public: // New Functions

        /**

         * Get the NVG-TLV data

         *

         * @since 1.0

         * @return descriptor pointing to the encoded data.

         */

        const TPtrC8 TLVEncodedData() const;

        /**

         * Kick off the process of rasterizing the SVG document elements

         *

         * @since 1.0

         * @param aRootElement - Root element of the SVG document

         * @return None

         */

        void DrawElementsL( CSvgElementImpl* aRootElement);

        /**

         * Kick off the process of placing graphical objects in their positions for rasterization

         *

         * @since 1.0

         * @param aRootElement - Root element of the SVG document

         * @return None

         */

        void UpdateCTM(CSvgDocumentImpl* aSvgDocument );

        /**

         * Invalidate the current raster and hence kick off another round of rasterization

         * process

         *

         * @since 1.0

         * @param None

         * @return None

         */

        void RedrawL();

        /**

         * Destroy the current representation of the SVG document

         *

         * @since 1.0

         * @param None

         * @return None

         */

        void Destroy();

        /**

         * An acessor to the document object that represents the current SVG source

         *

         * @since 1.0

         * @param None

         * @return Pointer to the document object instance.

         */

        CSvgDocumentImpl* Document();

        /**

         * Overwrite the current path information in the given element

         *

         *

         * @param hPath - handle to a path

         * @param hElement - handle to a path element

         * @return none

         */

        void UpdatePath( CGfxGeneralPath* hPath, CSvgElementImpl* hElement );

        /**

         * Kick off the processing of SVG source, and animation time frames

         *

         * @since 1.0

         * @param None

         * @return A boolean value that indicates success/failure

         */

        TBool StartFrameLoopL();

        /**

         * Obtain an image source embedded within a SVG source (JPEG, PNG)

         *

         * @since 1.0

         * @param aUri - A string buffer with the URI of the image source

         * @param aFileName - A string buffer with the contents of the image source

         * @return ETrue - Success, EFalse - Failure

         *

         */

        TBool FetchImage( const TDesC& aUri, RFs& aSession, RFile& aFileHandle );

        /**

         * Return the animation duration for the given document, if NULL (default)

         * then use the document attached to engine.  The value 0xFFFFFFFF is

         * return is the animation is indefinite.

         *

         * @since 1.0

         * @param aDocumentElement - document to find animation duration.

         * @return An integer containing the aniamtion duration value

         */

        TUint32 Duration( CSvgDocumentImpl* aDocumentElement = NULL );

        /**

         * Accessor for the Graphics Context object

         *

         * @since 1.0

         * @param None

         * @return A pointer to the Graphics Context object

         */

        CGfx2dGc* GraphicsContext();

        /**

         * Internally render SVG source into a buffer (rasterization)

         *

         * @since 1.0

         * @param aSvgData - A string buffer containing the SVG source

         * @param aFrameBuffer - A bitmap passed by the client that will contain the raster

         * @param aPreserveAspectRatio - The aspect ratio (see SVG spec for more) for the raster

         * @return TBool - ETrue/EFalse indicate presence/absence of the resource

         */

        TInt RenderFileToBuffer( const TDesC8& aSvgData,

                                   CFbsBitmap* aFrameBuffer,

                                   CFbsBitmap* aMask,

                                   TBool aPreserveAspectRatio );

		void RenderFileL( const TDesC8& aSvgData,

                                           CFbsBitmap* aFrameBuffer,

                                           CFbsBitmap* aMask,

                                           TBool aPreserveAspectRatio);

        /**

         * A private method that toggles debug info for developers

         *

         * @since 1.0

         * @param None

         * @return None

         */

        void SwitchDebugInfo(TBool debug);

        /**

         * A private method that switch between OpenVG and VGR implementation

         *

         * @since 1.0

         * @param TBool aCustomOption ETrue set OpenVG

         * @return None

         */

        void CustomOption( TBool aCustomOption );

        /**

         * This method is for future extension, in which an external script engine

         * could be used to evaluate a script description.

         *

         * @since 1.0

         * @param : aScript -- A description of script from the "on" attribute.

         *

         * @param : aCallerElement -- The element that calls the script by a

         *                            an event of the "on" attribute.

         * @return : For future use.  Value is ignored.

         */

        TBool ScriptCall( const TDesC& aScript,

                                            CSvgElementImpl* aCallerElement );

        /**

         * Set the URI information in the Engine

         *

         * @since 1.0

         * @param

         * @return

         */

        void LinkRequest( const TDesC& aUri );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void LinkRequestWithShow(const TDesC& aUri, const TDesC& aLinkShow);

        /**

         * Accessor for the current engine time

         *

         * @since 1.0

         * @param None

         * @return An integer that represents the current engine time

         */

        TInt32 CurrentTIme();

        /**

         * Set SVG Dimensions to Frame buffer size

         *

         * @since 1.0

         * @param None

         * @return An integer that represents the current engine time

         */

        void SetSvgDimensionToFrameBufferL(TUint aWidth, TUint aHeight);

        /**

         * Generate mask bitmap from alpha channel of the framebuffer

         *

         * @since

         * @param

         * @return

         */

        void GenerateMask( CFbsBitmap* aMask );

        /**

         * Set background color

         *

         * @since

         * @param

         * @return

         */

        void SetBackgroundColor(TUint32 aRGBA8888Color);

        /**

         * Returns SVG Engine State

         *

         * @since 1.0

         * @param None

         * @return An integer that represents SVG Engine state

         */

         TSvgEngineState SVGEngineState();

         /**

         * Sets SVG Engine state

         *

         * @since 1.0

         * @param An integer that represents SVG Engine state

         * @return void

         */

         void SetSVGEngineState(TSvgEngineState aState);

         /**

         * Sets the GDI context from the Bitmap.

         *

         * @since 1.0

         * @param : aFrameBuffer -- Bitmap to draw svg content.

         * @param : aReqObserver -- Request observer called by svg engine.

         * @return

         */

         void SetGdiContextL(CFbsBitmap* aCurrentBitmap, CFbsBitmap* aMask = NULL);

         void SetGdiContextL(CFbsBitmap* aCurrentBitmap, CFbsBitmap* aMask,TSize aCurrentBitmapSize,TDisplayMode aRenderDspMode,TDisplayMode aMaskDspMode);

        /**

         * Start the Engine so that the first frame is drawn when the call is finished.

         *

         *

         * @param : aError

         * @return: None

         */

         void StartEngine(CSvgErrorImpl* aError = NULL);

        void RenderFrame( TUint aCurrentTime );

        /**

         * Set the Document

         *

         *

         * @param : CSvgDocumentImpl* aDocument

         * @return: None

         */

        void SetDocument(CSvgDocumentImpl* aDocument);

        /**

         * Given a document handle and a url this call attaches

         * the given data (ldata) to every element that references that url

         *@param   aDocument - Document Pointer

         *@param   lUrl- uri string that is an external resource to be retrieved

         *@param   ldata - byte array containing the data that that external resource recieved

         *@return  none

         */

        void ChangeDuration( TUint32 aTimerDuration );

        void Resume(TInt32 aTime);

        void SeekEngine( TUint32 aTime);

        void SetMediaTime(TUint32 aTimeInMilliSeconds);

        /**

         * Initializes the SVG Engine primarily with width and height informtion

         * This is based on the attribute specifications for the root 'svg' element

         *

         * @since 1.0

         * @param None

         * @return None

         */

        void InitializeEngineL();

        /**

         * Get all the bounding-boxes for the given text and the contexts include

         * the text was found.  The bounding-boxes are transformed, taking zooming/panning

         * in account.

         *

         * @param : aString -- String to search in the document.

         * @param : aBoundingBoxes -- Array to hold bounding-boxes info.

         * @param : aTexts -- Array to hold complete text of cdata where aString was found.

         * @return: None

         */

         /*

         void FindBBoxesForHorizontalText( const TDesC& aString,

                                 RArray<TRect>& aBoundingBoxes,

                                 RArray<TPtrC>& aTexts,

                                 RArray<TInt>& aElementIds,

                                 TBool aCaseSensitive );

		*/

        /**

         * Get all the bounding-boxes for the given text and the contexts include

         * the text was found.  The bounding-boxes are transformed, taking zooming/panning

         * in account.

         *

         * @param : aString -- String to search in the document.

         * @param : aBoundingBoxes -- Array to hold bounding-boxes info.

         * @param : aTexts -- Array to hold complete text of cdata where aString was found.

         * @return: None

         */

         void FindBBoxesForRotatedText( const TDesC& aString,

                                 RPointerArray<MRect>& aBoundingBoxes,

                                 RArray<TPtrC>& aTexts,

                                 RArray<TInt>& aElementIds,

                                 TBool aCaseSensitive );

        /**

         * Process the given coordinate to determine if it is inside/outside a

         * hyperlink; then, notify the hyperlink listeners.

         *

         * @param : aX -- x coordinate

         * @param : aY -- y coordinate

         * @return: None

         */

        void CheckForHyperlinkMouseover( TInt aX, TInt aY );

        /**

         * Add a hyperlink listener.

         *

         * @param : aListener -- hyperlink listener

         * @param : aY -- y coordinate

         * @return: None

         */

        void AddHyperlinkListener( MSvgHyperlinkListener* aListener );

        /**

         * Add a textbox listener.

         *

         * @param : aListener -- textbox listener

         * @return: None

         */

        void AddTextAreaListener( MSvgTextAreaListener* aListener );

        /**

         * Remove a textbox listener.

         *

         * @param : aListener -- textbox listener

         * @return: None

         */

        void RemoveTextAreaListener( MSvgTextAreaListener* aListener );

        void NotifyTextAreaEntered( CSvgTextAreaElementImpl* aTextAreaElement );

        void NotifyTextAreaExited( CSvgTextAreaElementImpl* aTextAreaElement );

        void AddTextListener( MSvgTextListener* aListener );

        void RemoveTextListener( MSvgTextListener* aListener );

        void NotifyTextEntered( CSvgTextElementImpl* aTextElement );

        void NotifyTextExited( CSvgTextElementImpl* aTextElement );

        /**

         * Add an interactive element listener.

         * @since v3.2

         * @param : aListener - interactive element listener

         * @return: None

         */

         void AddInteractiveElementListener( MSvgInteractiveElementListener* aListener );

        /**

         * Notify the client when the pointer enters an interactive element.

         * @since v3.2

         * @param : aElement - The element which has some animation

         * @return: None

         */

         void NotifyInteractiveElementEntered(CSvgElementImpl* aElement);

        /**

         * Notify the client when the pointer exists an interactive element.

         * @since v3.2

         * @param : aElement - The element which has some animation

         * @return: None

         */

         void NotifyInteractiveElementExited(CSvgElementImpl* aElement);

        /**

         * Remove an interactive element listener.

         * @since v3.2

         * @param : aListener - interactive element listener

         * @return: None

         */

         void RemoveInteractiveElementListener( MSvgInteractiveElementListener* aListener );

         /**

         * Add a hyperlink listener.

         *