164 lines
5.1 KiB
C++
164 lines
5.1 KiB
C++
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/*
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* _RENDER.H
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*
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* Purpose:
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* CRenderer class
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*
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* Authors:
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* RichEdit 1.0 code: David R. Fulmer
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* Christian Fortini (initial conversion to C++)
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* Murray Sargent
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*
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* Copyright (c) 1995-1998, Microsoft Corporation. All rights reserved.
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*/
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#ifndef _RENDER_H
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#define _RENDER_H
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#include "_measure.h"
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#include "_rtext.h"
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#include "_osdc.h"
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BOOL IsTooSimilar(COLORREF cr1, COLORREF cr2);
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class CDisplay;
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// ========================== CRenderer ==================================
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// CRenderer - specialized text pointer used for rendering text
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class CRenderer : public CMeasurer
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{
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friend struct COls;
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friend struct CLsrun;
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friend LSERR OlsDrawGlyphs(POLS,PLSRUN,BOOL,BOOL,PCGINDEX,const int*,const int*,PGOFFSET,PGPROP,
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PCEXPTYPE,DWORD,LSTFLOW,UINT,const POINT*,PCHEIGHTS,long,long,const RECT*);
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private:
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RECT _rcView; // View rect (_hdc logical coords)
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RECT _rcRender; // Rendered rect (_hdc logical coords)
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RECT _rc; // Running clip/erase rect (_hdc logical coords)
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LONG _xWidthLine; // Total width of line
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LONG _cpAccelerator; // Accelerator cp if any (-1 if none).
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COLORREF _crBackground; // Default background color
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COLORREF _crForeDisabled; // Foreground color for disabled text
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COLORREF _crShadowDisabled; // Shadow color for disabled text
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COLORREF _crTextColor; // Default text color
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COLORREF _crCurBackground; // Current background color
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COLORREF _crCurTextColor; // Current text color
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COffScreenDC _osdc; // Manager for off screen DC
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HDC _hdc;
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union
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{
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DWORD _dwFlags; // All together now
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struct
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{
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DWORD _fDisabled:1; // Draw text with disabled effects?
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DWORD _fErase:1; // Erase background (non transparent)
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DWORD _fSelected:1; // Render run with selection colors
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DWORD _fLastChunk:1; // Rendering last chunk
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DWORD _fSelectToEOL:1; // Whether selection runs to end of line
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DWORD _fUseOffScreenDC:1; // Using off screen DC
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DWORD _fRenderSelection:1;// Render selection?
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DWORD _fBackgroundColor:1;// Some text in the line has non-default
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// background color.
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DWORD _fEnhancedMetafileDC:1; // Use ExtTextOutA to hack around all
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// sort of Win95FE EMF or font problems
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DWORD _fFEFontOnNonFEWin9x:1; // have to use ExtTextOutW even for EMF.
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DWORD _fSelectedPrev:1; // TRUE if prev run selected
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DWORD _fStrikeOut:1; // TRUE if current run is struckout
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};
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};
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LOGPALETTE *_plogpalette;
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POINT _ptCur; // Current rendering position on screen
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BYTE _bUnderlineType; // Underline type
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BYTE _bUnderlineClrIdx; // Underline color index (0 uses text color)
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void Init(); // Initialize most members to zero
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void UpdatePalette(COleObject *pobj);
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void RenderText(const WCHAR* pch, LONG cch);
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BOOL SetNewFont();
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BOOL RenderChunk(LONG &cchChunk, const WCHAR *pszToRender, LONG cch);
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LONG RenderTabs(LONG cchChunk);
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BOOL RenderBullet();
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public:
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CRenderer (const CDisplay * const pdp);
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CRenderer (const CDisplay * const pdp, const CRchTxtPtr &rtp);
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~CRenderer (){}
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void operator =(const CLine& li) {*(CLine*)this = li;}
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void RenderExtTextOut(LONG x, LONG y, UINT fuOptions, RECT *prc, PCWSTR pch, UINT cch, const INT *rgdxp);
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void SetSelected(BOOL f) {_fSelected = f;}
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BOOL fBackgroundColor() const {return _fBackgroundColor;}
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BOOL fUseOffScreenDC() const {return _fUseOffScreenDC;}
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COLORREF GetTextColor(const CCharFormat *pCF);
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void SetTextColor(COLORREF cr);
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void SetCurPoint(const POINT &pt) {_ptCur = pt;}
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const POINT& GetCurPoint() const {return _ptCur;}
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void SetClipRect(void);
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void SetClipLeftRight(LONG xWidth);
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BOOL RenderStartLine();
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const RECT& GetClipRect() const {return _rc;}
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HDC GetDC() const {return _hdc;}
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BOOL StartRender(
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const RECT &rcView,
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const RECT &rcRender,
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const LONG yHeightBitmap);
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void EndRender();
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void EndRenderLine(HDC hdcSave, LONG xAdj, LONG yAdj, LONG x);
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void FillRectWithColor(RECT *prc, COLORREF cr);
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void NewLine (const CLine &li);
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BOOL RenderLine(CLine &li);
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void RenderOffScreenBitmap(HDC hdc, LONG yAdj, LONG xAdj);
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BOOL RenderOutlineSymbol();
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void RenderStrikeOut(LONG xStart, LONG yStart,
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LONG xWidth, LONG yThickness);
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void RenderUnderline(LONG xStart, LONG yStart,
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LONG xWidth, LONG yThickness);
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void SetFontAndColor(const CCharFormat *pCF);
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HDC SetUpOffScreenDC(LONG& xAdj, LONG& yAdj);
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void SetupUnderline(LONG UnderlineType);
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CONVERTMODE GetConvertMode();
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BOOL fFEFontOnNonFEWin9x() {return _fFEFontOnNonFEWin9x;}
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BOOL UseXOR(COLORREF cr)
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{
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return GetPed()->Get10Mode() || (_crBackground != ::GetSysColor(COLOR_WINDOW) && _crBackground == cr);
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}
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};
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/*
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* BottomOfRender (rcView, rcRender)
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*
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* @mfunc
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* Calculate maximum logical unit to render.
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*
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* @rdesc
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* Maximum pixel to render
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*
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* @devnote
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* This function exists to allow the renderer and dispml to be able
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* to calculate the maximum pixel for rendering in exactly the same
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* way.
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*/
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inline LONG BottomOfRender(const RECT& rcView, const RECT& rcRender)
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{
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return min(rcView.bottom, rcRender.bottom);
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}
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#endif
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