/*

* 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 Implementation header file

 *

*/

#ifndef _INC_CSVGTEXTELEMENTIMPL_

#define _INC_CSVGTEXTELEMENTIMPL_

#include "SVGElementImpl.h"

#include "SVGLangSpaceImpl.h"

#include "SVGFourPointRect.h"

#include "SVGListener.h"

#include "GfxPoint2D.h"

class CSvgErrorImpl;

class   CSvgDocumentImpl;

class   MXmlDocument;

enum TTextAnchor

{

    EStartAnchor = 0,

    EMiddleAnchor,

    EEndAnchor

};

/**

 * Class description goes here.

 *

 *  @lib SVGEngine.lib

 *  @since 1.0

 */

class CSvgTextElementImpl : public CSvgElementImpl,

							public MSvgMouseListener

    {

    public:

        // Constructor/deconstructor

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        static CSvgTextElementImpl*NewL(  const TUint8 aElemID,

                                      CSvgDocumentImpl* aDoc );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        static CSvgTextElementImpl*NewLC(  const TUint8 aElemID,

                                       CSvgDocumentImpl* aDoc );

    private:

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                            ConstructL(  const TUint8 aElemID  );

    public:

        void UpdateCurrentScaledFont();

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

                                    ~CSvgTextElementImpl();

        // From SVG DOM

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TInt32                      NumberOfChars();

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        GetX( CArrayFix<TFloatFixPt>* aX );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        GetY( CArrayFix<TFloatFixPt>* aY );

        // SVG Implementation

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TBool                       IsNumberAttributeValid( const TDesC& aValue );

        void                        SetTextL( const TDesC& aText ); // This is temporary API until CDATA is implemented

        TDesC&                      GetText();

		TBool			 			LoadExternalSVGFontL( const TDesC& aText );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetX( CArrayFix<TFloatFixPt>* aX );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetY( CArrayFix<TFloatFixPt>* aX );

        void                        SetXYArray(TUint16 aAtrId, CArrayFixFlat<TFloatFixPt>*& aX );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetTextDecoration( const TDesC& aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetTextAnchor( const TDesC& aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetFontFamilyL( const TDesC& aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetRotateL( const TDesC& aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        /**

         * Using generic function instead of SetArrayXL or SetArrrayYL

         *

         * @since 1.0

         * aValue - the string containing the coordinates

         * aIsX - Flag to determine whether it is X or Y coordinate values

         */

        void                        SetArrayL( const TDesC& aValue , const TBool aIsX);

        // From MXmlElement API

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TInt                        SetAttributeL( const TDesC& aName,

                                                   const TDesC& aValue );

        // From MXmlElementOpt API

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TInt                        GetAttributeFloat( const TInt aNameId,

                                                       TFloatFixPt& aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TInt                        SetAttributeFloatL( const TInt aNameId,

                                                        const TFloatFixPt aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TInt                        GetAttributeDes( const TInt aNameId,

                                                     TPtrC16& aValue );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TInt                        SetAttributeDesL( const TInt aNameId,

                                                      const TDesC& aValue );

        // From CSvgElementImpl

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        MXmlElement*                CloneL(MXmlElement* aParentElement);

		void					CopyL( CSvgTextElementImpl* aDestElement );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TBool                       DrawL( CGfx2dGc* aGc,

                                           CSvgElementImpl* aElement );

        /**

         * Scale the stroke width in order to nullify the effect of scaling

         * appiled on the glyph

         *

         * @since 3.2

         * @param aGc- Graphics context

         * @return none

         */

		void ScaleStrokeWidth(CGfx2dGc* aGc);

//		void	GetCurrentFontScaled(CFont*& aFont, TFontSpec& aFontSpec);

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        GetBBox( TGfxRectangle2D& aBbox );

		void						GetFourPointBBox( TSvgFourPointRect& aFourPointBBox );

		void 						GetBBoxForSVGText( TGfxRectangle2D& aBbox );

		void 						GetBBoxForSVGText( TSvgFourPointRect& aFourPointBbox,const TGfxAffineTransform& aTransform);	

		void						GetBBoxForSystemText( TGfxRectangle2D& aBbox );

        void 						GetBBoxForSystemText( TSvgFourPointRect& aFourPointBbox );

        void                        CreateSVGFontL();

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        virtual void                GetUnscaledBBox( TGfxRectangle2D& aBbox );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        //Local Function(s)

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TBool                       IsWithinUnicodeRange( const TDesC& aUnicodeRange,

                                                          const TDesC& aCharacter );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetUKernPairsL( const TDesC& aU1,

                                                   const TDesC& aU2 );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        void                        SetGKernPairsL( const TDesC& aG1,

                                                   const TDesC& aG2 );

        /**

         * Need method description

         *

         * @since 1.0

         * @param

         * @return

         */

        TBool                       IsKerningRequired( const TDesC& aPrevGlyphName,

                                                       const TDesC& aCurrGlyphName,

                                                       const TDesC& aPrevUnicode,

                                                       const TDesC& aCurrUnicode);

        // function for decoding

        void                      SetRotateArray(CArrayFixFlat<TReal32>*& aRotate);

        void                      FreeFontData();

        /**

         * Return the font size for this text element.

         *

         * @since 1.0

         * @param

         * @return

         */

        TFloatFixPt  FontSize();

        TFloatFixPt TextAdvance( const TDesC& aText, TInt aIndex = 0);

        TFloatFixPt Ascent();

        TFloatFixPt Descent();

        TTextAnchor TextAnchor();

		void  CacheGlyphsForText();

		TBool IsMostBasicLatin();

		TBool HasFont();

		void SetFont(CFont* aBitmapFont = NULL, CSvgElementImpl* aSVGFont = NULL);

		void SetEditable( const TDesC& aValue );

		void Print( TBool aIsEncodeOn );

		const CFont* Font() const;

        /**

         * Return wether an svg element is displayable, such as <rect>, <circle>, or

         * an abstract element, such as <g>, <animate>.

         *

         * @since 1.0

         * @param None

         * @return ETrue if element is viewable.

         */

        TBool               IsViewable() { return ETrue; }

		TBool 				IsEditable();

        /**

         * Notified when the mouse pointer enters a visible svg element.

         *

         * @since 1.0

         * param : aElements -- SVG elements containing the mouse point.

         * param : aX -- x coordinate of mouse pointer.

         * param : aY -- y coordinate of mouse pointer.

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

         */

        TBool MouseEntered( RPointerArray<CSvgElementImpl>& aElements,

                                    TInt aX, TInt aY );

        /**

         * Notified when the mouse pointer exits a visible svg element.

         *

         * @since 1.0

         * param : aElements -- SVG elements containing the mouse point.

         * param : aX -- x coordinate of mouse pointer.

         * param : aY -- y coordinate of mouse pointer.

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

         */

        TBool MouseExited( RPointerArray<CSvgElementImpl>& aElements,

                                   TInt aX, TInt aY );

        /**

         * Notified when the mouse pointer exits a visible svg element.

         *

         * @since 1.0

         * param : aElements -- SVG elements containing the mouse point.

         * param : aX -- x coordinate of mouse pointer.

         * param : aY -- y coordinate of mouse pointer.

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

         */

        TBool MouseMoved( RPointerArray<CSvgElementImpl>& aElements,

                          TInt aX, TInt aY );

        /**

         * Notified when the mouse pointer is pressed down on visible svg element.

         *

         * @since 1.0

         * param : aElements -- SVG elements containing the mouse point.

         * param : aX -- x coordinate of mouse pointer.

         * param : aY -- y coordinate of mouse pointer.

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

         */

        TBool MousePressed( RPointerArray<CSvgElementImpl>& aElements,

                                    TInt aX, TInt aY );

        /**

         * Notified when the mouse pointer is released on on visible svg element.

         *

         * @since 1.0

         * param : aElements -- SVG elements containing the mouse point.

         * param : aX -- x coordinate of mouse pointer.

         * param : aY -- y coordinate of mouse pointer.

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

         */

        TBool MouseReleased( RPointerArray<CSvgElementImpl>& aElements,

                                    TInt aX, TInt aY );

        inline TInt FileOffset() const

            {

            return iOffset;

            }

        inline void SetFileOffset(TInt aOffset)

            {

            if(! FileOffset())

            iOffset = aOffset;

            };

        inline void SetOrgLength(TInt aOrgLength)

            {

            if(!GetOrgLength())

            iOrgLength = aOrgLength;

            };

        inline TInt GetOrgLength()            

            {

            return iOrgLength;

            }

        TFloatFixPt GetTotalTextAdvance(const TFloatFixPt& alK,const TFloatFixPt& alUnitsPerEmInverse,const TFloatFixPt& alFontSize,const TFloatFixPt& alMissingGlyphHorzAdvX,const TFloatFixPt& alFontHorzAdvX);

        CFont*                      iBitmapFont;

        TFontSpec					iBitmapFontSpec; //New