///////////////////////////////////////////////////////////////////////////// // Name: dc.h // Purpose: wxDC class // Author: Vaclav Slavik // Created: 2001/03/09 // RCS-ID: $Id$ // Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com) // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_DC_H_ #define _WX_DC_H_ #include "wx/defs.h" #include "wx/region.h" //----------------------------------------------------------------------------- // classes //----------------------------------------------------------------------------- class WXDLLEXPORT wxDC; //----------------------------------------------------------------------------- // constants //----------------------------------------------------------------------------- #ifndef MM_TEXT #define MM_TEXT 0 #define MM_ISOTROPIC 1 #define MM_ANISOTROPIC 2 #define MM_LOMETRIC 3 #define MM_HIMETRIC 4 #define MM_TWIPS 5 #define MM_POINTS 6 #define MM_METRIC 7 #endif //----------------------------------------------------------------------------- // wxDC //----------------------------------------------------------------------------- // MGL fwd declarations: class MGLDevCtx; class MGLRegion; struct font_t; class WXDLLEXPORT wxDC : public wxDCBase { DECLARE_DYNAMIC_CLASS(wxDC) public: wxDC(); virtual ~wxDC(); // implement base class pure virtuals // ---------------------------------- virtual void Clear(); virtual bool StartDoc(const wxString& message); virtual void EndDoc(); virtual void StartPage(); virtual void EndPage(); virtual void SetFont(const wxFont& font); virtual void SetPen(const wxPen& pen); virtual void SetBrush(const wxBrush& brush); virtual void SetBackground(const wxBrush& brush); virtual void SetBackgroundMode(int mode); virtual void SetPalette(const wxPalette& palette); virtual void DestroyClippingRegion(); virtual wxCoord GetCharHeight() const; virtual wxCoord GetCharWidth() const; virtual void DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, wxCoord *descent = NULL, wxCoord *externalLeading = NULL, wxFont *theFont = NULL) const; virtual bool CanDrawBitmap() const; virtual bool CanGetTextExtent() const; virtual int GetDepth() const; virtual wxSize GetPPI() const; virtual void SetMapMode(int mode); virtual void SetUserScale(double x, double y); virtual void SetLogicalScale(double x, double y); virtual void SetLogicalOrigin(wxCoord x, wxCoord y); virtual void SetDeviceOrigin(wxCoord x, wxCoord y); virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); virtual void SetLogicalFunction(int function); // implementation from now on // -------------------------- virtual void ComputeScaleAndOrigin(); wxCoord XDEV2LOG(wxCoord x) const { wxCoord new_x = x - m_deviceOriginX; if (new_x > 0) return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX; else return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX; } wxCoord XDEV2LOGREL(wxCoord x) const { if (x > 0) return (wxCoord)((double)(x) / m_scaleX + 0.5); else return (wxCoord)((double)(x) / m_scaleX - 0.5); } wxCoord YDEV2LOG(wxCoord y) const { wxCoord new_y = y - m_deviceOriginY; if (new_y > 0) return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY; else return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY; } wxCoord YDEV2LOGREL(wxCoord y) const { if (y > 0) return (wxCoord)((double)(y) / m_scaleY + 0.5); else return (wxCoord)((double)(y) / m_scaleY - 0.5); } wxCoord XLOG2DEV(wxCoord x) const { wxCoord new_x = x - m_logicalOriginX; if (new_x > 0) return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX; else return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX; } wxCoord XLOG2DEVREL(wxCoord x) const { if (x > 0) return (wxCoord)((double)(x) * m_scaleX + 0.5); else return (wxCoord)((double)(x) * m_scaleX - 0.5); } wxCoord YLOG2DEV(wxCoord y) const { wxCoord new_y = y - m_logicalOriginY; if (new_y > 0) return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY; else return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY; } wxCoord YLOG2DEVREL(wxCoord y) const { if (y > 0) return (wxCoord)((double)(y) * m_scaleY + 0.5); else return (wxCoord)((double)(y) * m_scaleY - 0.5); } MGLDevCtx *GetMGLDC() const { return m_MGLDC; } void SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC = false); protected: virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style = wxFLOOD_SURFACE); virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const; virtual void DoDrawPoint(wxCoord x, wxCoord y); virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2); virtual void DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc); virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double sa, double ea); virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height); virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius); virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height); virtual void DoCrossHair(wxCoord x, wxCoord y); virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y); virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask = false); virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y); virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle); virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1); // this is gnarly - we can't even call this function DoSetClippingRegion() // because of virtual function hiding virtual void DoSetClippingRegionAsRegion(const wxRegion& region); virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height); virtual void DoGetSize(int *width, int *height) const; virtual void DoGetSizeMM(int* width, int* height) const; virtual void DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset); virtual void DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int fillStyle = wxODDEVEN_RULE); // implementation from now on: protected: // setup newly attached MGLDevCtx for wxDC's use // (does things like setting RGB blending mode for antialiased texts): void InitializeMGLDC(); // common part of DoDrawText() and DoDrawRotatedText() void DrawAnyText(const wxString& text, wxCoord x, wxCoord y); // MGL uses pens as both wxPens and wxBrushes, so we have to // switch them as needed: void SelectPen(); void SelectBrush(); void SelectMGLStipplePen(int style); void SelectMGLFatPen(int style, int flag); // Select m_font into m_MGLDC: bool SelectMGLFont(); // Convert wxWin logical function to MGL rop: int LogicalFunctionToMGLRop(int logFunc) const; // Unified implementation of DrawIcon, DrawBitmap and Blit: void DoDrawSubBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, wxCoord w, wxCoord h, wxCoord destx, wxCoord desty, int rop, bool useMask); // MGL DC class we use: MGLDevCtx *m_MGLDC; bool m_OwnsMGLDC:1; // helper variables for SelectXXXX(): bool m_penSelected; bool m_brushSelected; bool m_downloadedPatterns[2]; // MGL does not render lines with width>1 with endings centered // at given coords but with top left corner of the pen at them, // these offsets are used to correct it. They are computed by // SelectPen. int m_penOfsX, m_penOfsY; double m_mm_to_pix_x, m_mm_to_pix_y; wxPalette m_oldPalette; wxRegion m_currentClippingRegion; wxRegion m_globalClippingRegion; // wxDC::Blit handles memoryDCs as special cases :( bool m_isMemDC; font_t *m_mglFont; }; #endif // _WX_DC_H_