/*

* Copyright (c) 2006-2007 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:   Definition of CHuiCanvasAlfPainter.

*

*/

#ifndef __HUICANVASALFPAINTER_H__

#define __HUICANVASALFPAINTER_H__

#include <uiacceltk/HuiVisual.h>

#include "uiacceltk/HuiTextMesh.h"

//#include <uiacceltk/HuiCanvasPainter.h>

#include "huicanvaspainter.h"

enum THuiCanvasCommands

    {

    // Draw ops

    EHuiCanvasDrawImage,

    EHuiCanvasDrawText,

    EHuiCanvasDrawLines,

	  EHuiCanvasDrawEllipse,

		EHuiCanvasDrawPoints,

		EHuiCanvasDrawPolygon,

		EHuiCanvasDrawRects,

		// Setters

		EHuiCanvasSetTextStyle,

    EHuiCanvasSetPenColor,

		EHuiCanvasSetPenWidth,

		EHuiCanvasSetOpacity,

		EHuiCanvasSetPolygonDrawMode,

		EHuiCanvasSetTextAlign,

    // Transformations

		EHuiCanvasLoadIdentity,

		EHuiCanvasTranslate,

		EHuiCanvasScale,

		EHuiCanvasRotate,

		// Misc

		EHuiCanvasPrepareDrawText

    };

NONSHARABLE_STRUCT( THuiCanvasDrawImageParams )

    {

    TInt    iTexture;

    TReal32 iDestinationRectTopLeftX;

    TReal32 iDestinationRectTopLeftY;

    TReal32 iDestinationRectBottomRightX;

    TReal32 iDestinationRectBottomRightY;

    };

NONSHARABLE_STRUCT( THuiCanvasDrawTextParams )

    {

    TReal32 iDestinationRectTopLeftX;

    TReal32 iDestinationRectTopLeftY;

    TReal32 iDestinationRectBottomRightX;

    TReal32 iDestinationRectBottomRightY;

    };

NONSHARABLE_STRUCT( THuiCanvasDrawEllipseParams )

	{

    TReal32 iDestinationRectTopLeftX;

    TReal32 iDestinationRectTopLeftY;

    TReal32 iDestinationRectBottomRightX;

    TReal32 iDestinationRectBottomRightY;

    };

NONSHARABLE_STRUCT( THuiCanvasSetTextStyleParams )

    {

    TInt  iTextStyleId;

    };

NONSHARABLE_STRUCT( THuiCanvasDrawTextCachedTextEntry )

    {

    TInt iId;

    CHuiTextMesh* iTextMesh;        

    };

NONSHARABLE_STRUCT( THuiCanvasSetPenColorParams )

	{

    TRgb  iPenColor;

    };

NONSHARABLE_STRUCT( THuiCanvasSetPenWidthParams )

	{

    TReal32  iPenWidth;

    };

NONSHARABLE_STRUCT( THuiCanvasSetOpacityParams )

	{

    TReal32  iOpacity;

    };

NONSHARABLE_STRUCT( THuiCanvasSetPolygonDrawModeParams )

	{

	THuiFillMode  iPolygonDrawMode;

    };

NONSHARABLE_STRUCT( THuiCanvasSetTextAlignParams )

	{

    TInt  iTextAlignHorizontal;

    TInt  iTextAlignVertical;

    };

   // Transformations

NONSHARABLE_STRUCT( THuiCanvasLoadIdentityParams )

	{

	TInt iDummy;

	};

NONSHARABLE_STRUCT( THuiCanvasTranslateParams )

	{

	TReal32 iX; 

	TReal32 iY; 

	TReal32 iZ;

	};

NONSHARABLE_STRUCT( THuiCanvasScaleParams )

	{

	TReal32 iX; 

	TReal32 iY; 

	TReal32 iZ;

	};

NONSHARABLE_STRUCT( THuiCanvasRotateParams )

	{

	TReal32 iAngle;

	TReal32 iX; 

	TReal32 iY; 

	TReal32 iZ;

	};

/**

 * This class is used internally by the toolkit and thus should

 * not be used by the applications directly.

 */

NONSHARABLE_CLASS(CHuiCanvasAlfPainter) : public CHuiCanvasPainter

    {

		private:

		/**

     * Constructor.

     */

    CHuiCanvasAlfPainter();

    /**

     * Second-phase constructor.

     */

    void ConstructL();

		public:

    /**

     * Constructor.

     */

    static CHuiCanvasAlfPainter* NewL();

    /**

     * Destructor.

     */

    ~CHuiCanvasAlfPainter();

		public: // From CHuiCanvasPainter

		/**

     * Sets buffer that contains canvas drawing commands. This

     * method clears previous buffer(s).

     *

     * @param aCommands Commanbuffer

     */

    virtual void SetCommandSetL( const TDesC8& aCommands );

    /**

     * Clears buffer(s) that contains canvas drawing commands. 

     */

    virtual void ClearCommandSet();

    /**

     * Adds buffer that contains more canvas drawing commands,

     * those will be executed after the buffers that has been

     * added previously.

     * @param aMoreCommands Commanbuffer

     */

    virtual void AddCommandSetL( const TDesC8& aMoreCommands );

    /**

     * Adds partial buffer that contains more canvas drawing commands. These

     * commands are appended to the commands set previously with this method

     * until param aLastPart has value ETrue. After that whole command set

     * will be added among possibly already existing command sets and

     * it will be drawable.

     * 

     * @param aMoreCommands Commanbuffer

     * @param aLastPart EFalse if there are more commands to be added into this

     * command set before it is wanted to be available for drawing. ETrue if

     * command set is ready and no more parts are expected.

     */

    virtual void AddPartialCommandSetL( const TDesC8& aMoreCommands, TBool aLastPart );

#ifdef HUI_DEBUG_TRACK_DRAWING

	virtual void SetTrackCommandSet( TFileName& aFileName, TBool aTrack );

#endif

    /**

     * Clears internal cached texts and images.

     */

    virtual void ClearCache();

    /**

     * Handles the command buffer(s), either draws or performs a scan.

     */

    virtual void HandleBufferL(TRect& aDisplayRect, TInt aAction, const CHuiCanvasVisual& aUser, CHuiGc* aGc, TPoint aPos ) ;

    virtual void HandleBufferL(TRect& aDisplayRect, TInt aAction, const CHuiCanvasVisual& aUser, CHuiGc* aGc, TPoint aPos, TPtrC8 aCommands, CHuiCanvasCommandBuffer *buf) { }

    /**

     * Returns the number of rectangular areas which contain something that is

     * drawn by the painter.

     *

     * @return number of painted areas.

     * @see PaintedArea()

     */

    virtual TInt PaintedAreaCount() const;

    /**

     * Returns information of the painted area at given index. 

     *

     * @aIndex Index of the painted area.

     * @return Painted area info.

     * @see PaintedAreaCount()

     */

    virtual THuiCanvasPaintedArea PaintedArea(TInt aIndex);

    /**

     * Draws content of the window in pixel format to the given bitmap. 

     * This method may not be supported in all commanbuffertype/renderer combinations.

     *

     * @param aTargetBuffer where content of the window is to be drawn. NULL if the drawing

     * is to be stopped.

     *

     * @return KErrNotSupported if the current renderer/painter does not support the

     * feature. Leave happens in other unexpected error situtations. 

     *         

     */

    virtual TInt SetCapturingBufferL(CFbsBitmap* /*aTarget*/);

    /**

     * Tells painter to enable/disable render buffer (if it is supported by the

     * painter implementation) 

     *

     * @return KErrNotSupported if the current renderer/painter does not support the

     */

    virtual TInt EnableRenderBuffer(TBool aEnable = ETrue);

	virtual CHuiCanvasGc& CanvasGc() const;

private:

    void ClearHuiTextCache();

private:

      // Hui command buffer handling

    RArray<THuiCanvasDrawTextCachedTextEntry> iCachedTexts;

    RArray<TReal32> iPointCords;

    CHuiCanvasGc* iCanvasGc;

    THuiRealRect iPaintedRect;

};    

#endif  // __HUICANVASALFPAINTER_H__