1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/textandloc/textrendering/textformatting/inc/FRMTLAY_INTERNAL.H Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,140 @@
1.4 +/*
1.5 +* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
1.6 +* All rights reserved.
1.7 +* This component and the accompanying materials are made available
1.8 +* under the terms of "Eclipse Public License v1.0"
1.9 +* which accompanies this distribution, and is available
1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.11 +*
1.12 +* Initial Contributors:
1.13 +* Nokia Corporation - initial contribution.
1.14 +*
1.15 +* Contributors:
1.16 +*
1.17 +* Description:
1.18 +*
1.19 +*/
1.20 +
1.21 +#ifndef __FRMTLAY_INTERNAL_H__
1.22 +#define __FRMTLAY_INTERNAL_H__
1.23 +
1.24 +#include <e32std.h>
1.25 +#include <e32base.h>
1.26 +#include <gdi.h>
1.27 +#include <tagma.h>
1.28 +
1.29 +#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
1.30 +#include <tagma_internal.h>
1.31 +#endif
1.32 +
1.33 +class MLayDoc;
1.34 +class MFormCustomInterfaceProvider;
1.35 +class MFormCustomInvisibleCharacterRemapper;
1.36 +class MFormCustomWrap;
1.37 +class MFormCustomDraw;
1.38 +
1.39 +/**
1.40 +@internalTechnology
1.41 +Internal to Symbian
1.42 +*/
1.43 +NONSHARABLE_CLASS(TLayDocTextSource) : public MTmSource, public MFormLabelApi, public MTmTextDrawExt, public MTmCustomExtension
1.44 + {
1.45 + public:
1.46 +
1.47 + enum
1.48 + {
1.49 + EDefaultFontHeightIncreaseFactor = 7,
1.50 + EDefaultMinimumLineDescent = 3
1.51 + };
1.52 +
1.53 + TLayDocTextSource();
1.54 +
1.55 + // overrides for MTmSource pure virtual functions
1.56 + MGraphicsDeviceMap& FormatDevice() const;
1.57 + MGraphicsDeviceMap& InterpretDevice() const;
1.58 + TInt DocumentLength() const;
1.59 + void GetText(TInt aPos,TPtrC& aText,TTmCharFormat& aFormat) const;
1.60 + void GetParagraphFormatL(TInt aPos,RTmParFormat& aFormat) const;
1.61 + TInt ParagraphStart(TInt aPos) const;
1.62 +
1.63 + // overrides for other MTmSource virtual functions
1.64 + TRgb SystemColor(TUint aColorIndex,TRgb aDefaultColor) const;
1.65 + CPicture* PictureL(TInt aPos) const;
1.66 + TInt GetPictureSizeInTwipsL(TInt aPos,TSize& aSize) const;
1.67 + TBool LabelModeSelect(TLabelType aType, TInt aPos);
1.68 + void LabelModeCancel();
1.69 + void LabelMetrics(TLabelType aType, TSize& aLabelSize, TInt& aMarginSize) const;
1.70 + TUint Map(TUint aChar) const;
1.71 + void SetLineHeight(const TLineHeightParam& aParam,TInt& aAscent,TInt& aDescent) const;
1.72 + TBool PageBreakInRange(TInt aStartPos,TInt aEndPos) const;
1.73 + void DrawBackground(CGraphicsContext& aGc,const TPoint& aTextLayoutTopLeft,const TRect& aRect,
1.74 + const TLogicalRgb& aBackground,TRect& aRectDrawn) const;
1.75 + void DrawLineGraphics(CGraphicsContext& aGc,const TPoint& aTextLayoutTopLeft,const TRect& aRect,
1.76 + const TTmLineInfo& aLineInfo) const;
1.77 + void DrawText(CGraphicsContext& aGc,const TPoint& aTextLayoutTopLeft,const TRect& aRect,
1.78 + const TTmLineInfo& aLineInfo,const TTmCharFormat& aFormat,
1.79 + const TDesC& aText,const TPoint& aTextOrigin,TInt aExtraPixels) const;
1.80 + virtual void DrawPicture(CGraphicsContext& aGc,
1.81 + const TPoint& aTextLayoutTopLeft, const TRect& aRect,
1.82 + MGraphicsDeviceMap& aDevice, const CPicture& aPicture) const;
1.83 + void DrawText(CGraphicsContext& aGc,const TPoint& aTextLayoutTopLeft,const TRect& aRect,
1.84 + const TTmLineInfo& aLineInfo,const TTmCharFormat& aFormat,
1.85 + const TDesC& aText, const TInt aStart, const TInt aEnd, const TPoint& aTextOrigin,TInt aExtraPixels) const;
1.86 +
1.87 + // overrides for the MTmSource virtual functions which implements the MFormCustomWrap
1.88 + // if iCustomWrap is set.
1.89 + TBool LineBreakPossible(TUint aPrevClass,TUint aNextClass,TBool aHaveSpaces) const;
1.90 + TUint LineBreakClass(TUint aCode,TUint& aRangeStart,TUint& aRangeEnd) const;
1.91 + TBool GetLineBreakInContext(const TDesC& aText,TInt aMinBreakPos,TInt aMaxBreakPos,
1.92 + TBool aForwards,TInt& aBreakPos) const;
1.93 + TBool IsHangingCharacter(TUint aChar) const;
1.94 +
1.95 + // other functions
1.96 + TBool CanMap() const;
1.97 +
1.98 + TAny* GetExtendedInterface(const TUid& aInterfaceId);
1.99 +
1.100 + //MTmTextDrawExt implementations
1.101 + virtual void DrawLine(CGraphicsContext& aGc, const TPoint& aPt1, const TPoint& aPt2) const;
1.102 + virtual void DrawText(CGraphicsContext& aGc, const TDesC& aText, const TPoint& aPt) const;
1.103 + virtual void DrawRect(CGraphicsContext& aGc, const TRect& aRc) const;
1.104 +
1.105 + //Set/reset opaque flag of aGc graphics context
1.106 + void SetOpaque(CGraphicsContext& aGc) const;
1.107 + void ResetOpaque(CGraphicsContext& aGc) const;
1.108 +
1.109 + // flags
1.110 + enum
1.111 + {
1.112 + EWrap = 1,
1.113 + ETruncateWithEllipsis = 2,
1.114 + EUseLabelsDevice = 4
1.115 + };
1.116 +
1.117 + MLayDoc* iLayDoc;
1.118 + TUint iFlags; // wrap, truncate, etc.
1.119 + TInt iWidth; // wrapping width
1.120 + TChar iEllipsis; // ellipsis character (or none if 0xFFFF) used if truncating
1.121 + TInt iLabelsWidth;
1.122 + TInt iLabelsGutter;
1.123 + CLayoutData::TFormatMode iFormatMode;
1.124 + MGraphicsDeviceMap* iImageDevice; // device map used for drawing text
1.125 + MGraphicsDeviceMap* iLabelsDevice; // device map used for labels
1.126 + MGraphicsDeviceMap* iFormatDevice; // device map used for formatting
1.127 + TInt iFontHeightIncreaseFactor; // percentage automatically added to font heights
1.128 + TInt iMinimumLineDescent; // minimum line descent in pixels
1.129 + TNonPrintingCharVisibility iNonPrintingCharVisibility;
1.130 + const MFormParam* iFormParam; // if non-null, points to the object that supplies system colours
1.131 + const MFormCustomDraw* iCustomDraw; // if non-null, points to custom drawing routines
1.132 + const MFormCustomWrap* iCustomWrap; // if non-null, points to custom wrapping routines
1.133 + /** Optional object able to provide a concrete customisation object for use
1.134 + internally by Form. */
1.135 + MFormCustomInterfaceProvider* iInterfaceProvider;
1.136 + TBool iDrawOpaque; // Opaque drawing active if the flag is ETrue
1.137 + TInt iExcessHeightRequired; // delta required to position the baseline so there is enough
1.138 + // space for the highset glyph in pixels.
1.139 + MFormCustomInvisibleCharacterRemapper* iInvisibleCharacterRemapper; // Used to customize the remapping of
1.140 + // invisible characters to visible characters
1.141 + };
1.142 +
1.143 +#endif