/*

* Copyright (c) 2003-2004 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  gdi interface

*

*/

#ifndef _GDIDEVICECONTEXT_H

#define _GDIDEVICECONTEXT_H

// INCLUDES

#include <AknUtils.h>

#include "nw_object_dynamic.h"

#include "GDIFont.h"

#include "BrsrTypes.h"

#include "BrsrStatusCodes.h"

// CONSTANTS

enum TGDIDeviceContextFontSizeLevel

  {

  EGDIDeviceContextFontSizeLevelAllSmall,

  EGDIDeviceContextFontSizeLevelSmaller,

  EGDIDeviceContextFontSizeLevelNormal,

  EGDIDeviceContextFontSizeLevelLarger,    

  EGDIDeviceContextFontSizeLevelAllLarge

  };

// fonts to be created : italic12, bold-italic12, plain13, italic13,

// bold-italic13, plain17, italic17, bold-italic17

const TInt8 KNumberOfFonts = 8;

// Browser specific font types

//

enum TGDIDeviceContextFontNames

  {

  ELatinItalic12,

  ELatinBoldItalic12,

  ELatinPlain13,

  ELatinItalic13,

  ELatinBoldItalic13,

  ELatinPlain17,

  ELatinItalic17,

  ELatinBoldItalic17

  };

enum TGDISupportedLanguage

    {

    EElafLanguage,

    EThaiLanguage,

    EJapaneseLanguage,

    EChinesePRCLanguage,

    EChinaHKTWLanguage

    };

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  CGDIDeviceContext

*  

*  @lib BrowserEngine.dll

*  @since 2.1

*/

class CGDIDeviceContext : public CBase

{

  public:  // Constructors and destructor

   /**

    * Two-phased constructor.

    * @return CGDIDeviceContext*

	  */

    static CGDIDeviceContext* NewL( void* aGraphicsContext, CView* aOocEpoc32View );

    /**

    * Destructor.

    */

    virtual ~CGDIDeviceContext();

  public: // New functions

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void DrawImage( const NW_GDI_Point2D_t* aLocation, 

                    const NW_GDI_Rectangle_t* aRectangle,

                    NW_GDI_ImageBlock_t* aImageBlock );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode ScaleImage( const NW_GDI_Dimension3D_t* aSize,

                                   const NW_GDI_ImageBlock_t* aImageBlock,

                                   NW_GDI_ImageBlock_t* aScaledImageBlock );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void DrawPixel( const NW_GDI_Point2D_t* aLocation );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode DrawPolyline( NW_GDI_Metric_t aNumPoints,

                                     const NW_GDI_Point2D_t* aPoints,

                                     TBool aClosed );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void DrawRectangle( const NW_GDI_Rectangle_t* aRectangle );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode DrawText( const NW_GDI_Point2D_t* aLocation,

                                 const NW_Text_t* aText,

                                 CGDIFont* aGDIFont,

                                 NW_GDI_Metric_t aSpacing,

                                 NW_GDI_TextDecoration_t aDecoration,

                                 NW_GDI_FlowDirection_t aDir,

                                 NW_GDI_Metric_t aWidth );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void FillRectangle( const NW_GDI_Rectangle_t* aRectangle );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode GetColorPalette( NW_GDI_ColorPalette_t* aColPalette );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_Color_t BackgroundColor () const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_Rectangle_t ClipRect () const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    const NW_GDI_Rectangle_t* DisplayBounds () const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TUint8 DisplayDepth() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_Pattern_t FillPattern() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode GetFlowDirection( NW_Text_t* aText, 

                                         NW_GDI_FlowDirection_t* aFlowDirection) const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_Color_t ForegroundColor() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_Pattern_t LinePattern() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_Metric_t LineWidth() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    const NW_GDI_Point2D_t* Origin() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_PaintMode_t PaintMode() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void* GetScaledCFont( CGDIFont* aFont ) const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    NW_GDI_TextDirection_t TextDirection() const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode GetTextExtent( const NW_Text_t* aText,

                                      CGDIFont* aGDIFont,

                                      NW_GDI_Metric_t aSpacing,

                                      NW_GDI_FlowDirection_t aFlowDirection,

                                      NW_GDI_Dimension2D_t* aExtent) const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void PreDraw();

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void PostDraw( TBool aDrawNow );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetBackgroundColor( NW_GDI_Color_t aColor );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetClipRect( const NW_GDI_Rectangle_t* aClipRect );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetFillPattern( NW_GDI_Pattern_t aFillPattern );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetForegroundColor( NW_GDI_Color_t aColor );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetLinePattern( NW_GDI_Pattern_t aLinePattern );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetLineWidth( NW_GDI_Metric_t aLineWidth );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetOrigin( const NW_GDI_Point2D_t* aOrigin );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetPaintMode( NW_GDI_PaintMode_t aPaintMode );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetTextDirection( NW_GDI_TextDirection_t aTextDirection );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetDisplayBounds( const NW_GDI_Rectangle_t* aDisplaybounds );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    CGDIFont* CreateFont( const NW_Text_t* aFamily, 

                          TGDIFontStyle aStyle, 

                          TUint8 aSizeInPixels,

                          TUint16 aWeight, 

                          TGDIFontVariant aVariant) const;

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void DrawLine( NW_GDI_Point2D_t aStartPoint, NW_GDI_Point2D_t aEndPoint );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBool SetFontSizeLevel();

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void ChangeFontSize( CGDIFont* aFont );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void GetHighlightColor( NW_GDI_Color_t* aColor );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SwitchAgainstBG( NW_GDI_Color_t* aColor );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode SplitText( NW_Text_t* aText,

                                  CGDIFont* aGDIFont,

                                  NW_GDI_Metric_t aConstraint,

                                  NW_GDI_Metric_t aSpacing,

                                  NW_GDI_FlowDirection_t aFlowDirection,

                                  NW_Text_Length_t* aLength,

                                  TUint8 aMode );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBrowserStatusCode GetSubstringExtent( const NW_Text_t* aText,

                                           CGDIFont* aGDIFont,

                                           NW_Text_Length_t aStart,

                                           NW_Text_Length_t aLength,

                                           NW_GDI_Metric_t aSpacing,

                                           NW_GDI_FlowDirection_t aFlowDirection,

                                           NW_GDI_Dimension2D_t* aExtent );

    /**

    * This method 

    * @since 2.1

    * @param TFontSpec which specifies the font family and the height of the font 

    *   the caller of this method wishes to find.

    * @return pointer to a CFont object which will have been found in the iFontCache 

    *   or have been created if the font was not already in the cache

    */

    CFont* FindFont( TFontSpec aFontSpec );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetRemoveNbsp( TBool aFlag );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    TBool RemoveNbsp();

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetGraphicsContext( void* aGraphicsContext );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    void SetFontSizeLevel( TGDIDeviceContextFontSizeLevel aFontSizeLevel );

    /**

    * This method 

    * @since 2.1

    * @param 

    * @return 

    */

    EVariantFlag VariantFlag();

    /**

    * This method 

    * @since 2.x

    * @param 

    * @return 

    */

    inline CWsScreenDevice*  WsScreenDevice() { return iWsScreenDev; };

    /**