dcsvg.h

wxGTK 是 wxWidgets 的 linux GTK+ (>2.2.3)版本。wxWidgets 是一个跨平台的 GUI 框架

#ifndef __DCSVG_H
#define __DCSVG_H
#include "wx/wfstream.h"
#include "wx/string.h"

#ifdef WXMAKINGDLL_SVG
    #define WXDLLIMPEXP_SVG WXEXPORT
#elif defined(WXUSINGDLL)
    #define WXDLLIMPEXP_SVG WXIMPORT
#else // not making nor using DLL
    #define WXDLLIMPEXP_SVG
#endif

#define wxSVGVersion wxT("v0100")
#ifdef __BORLANDC__
#pragma warn -rch
#pragma warn -ccc
#endif

class WXDLLIMPEXP_SVG wxSVGFileDC : public wxDC
{

    private:
        wxFileOutputStream * m_outfile ;
        wxString m_filename ;
        //holds number of png format images we have
        int m_sub_images ;
        bool m_OK, m_graphics_changed ;
        int m_width, m_height ;

        double
            m_logicalScaleX,
            m_logicalScaleY,
            m_userScaleX,
            m_userScaleY,
            m_scaleX,
            m_scaleY,
            m_OriginX,
            m_OriginY,
            m_mm_to_pix_x,
            m_mm_to_pix_y;

        bool
            m_needComputeScaleX,
            m_needComputeScaleY; // not yet used


        bool DoGetPixel(wxCoord, wxCoord, class wxColour *) const
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::DoGetPixel Call not implemented")); return true; };

        virtual bool DoBlit(wxCoord, wxCoord, wxCoord, wxCoord, class wxDC *,
            wxCoord, wxCoord, int = wxCOPY, bool = 0, int = -1, int = -1) ;

        void DoCrossHair(wxCoord, wxCoord)
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::CrossHair Call not implemented")); return  ; };

        void DoDrawArc(wxCoord, wxCoord, wxCoord, wxCoord, wxCoord, wxCoord);

        void DoDrawBitmap(const class wxBitmap &, wxCoord, wxCoord, bool = 0) ;

        void DoDrawCheckMark(wxCoord x, wxCoord y, wxCoord width, wxCoord height) ;

        void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) ;

        void DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) ;

        void DoDrawIcon(const class wxIcon &, wxCoord, wxCoord) ;

        void DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) ;

        void DoDrawPoint(wxCoord, wxCoord) ;

        void DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle) ;

        void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) ;

        void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) ;

        void DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius = 20)  ;

        void DoDrawText(const wxString& text, wxCoord x, wxCoord y);

        bool DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), const wxColour& WXUNUSED(col),
                             int WXUNUSED(style) = wxFLOOD_SURFACE)
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::DoFloodFill Call not implemented")); return false ; };

        void DoGetSize(int * x, int *y) const { *x = m_width; *y = m_height ; return ; } ;

        void DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h, wxCoord *descent = NULL, wxCoord *externalLeading = NULL, wxFont *font = NULL) const ;

        void DoSetClippingRegionAsRegion(const class wxRegion &)
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::DoSetClippingRegionAsRegion Call not yet implemented")); return  ; };

       void Init (wxString f, int Width, int Height, float dpi);

       void NewGraphics () ;

#ifdef XDEV2LOG
#undef XDEV2LOG
#endif
        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;
        }
#ifdef XDEV2LOGREL
#undef XDEV2LOGREL
#endif
        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);
        }
#ifdef YDEV2LOG
#undef YDEV2LOG
#endif
        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;
        }
#ifdef YDEV2LOGREL
#undef YDEV2LOGREL
#endif
        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);
        }
#ifdef XLOG2DEV
#undef XLOG2DEV
#endif
        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;
        }
#ifdef XLOG2DEVREL
#undef XLOG2DEVREL
#endif
        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);
        }
#ifdef YLOG2DEV
#undef YLOG2DEV
#endif
        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;
        }
#ifdef YLOG2DEVREL
#undef YLOG2DEVREL
#endif
        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);
        }

        void write(const wxString &s);

    public:

        wxSVGFileDC (wxString f);
        wxSVGFileDC (wxString f, int Width, int Height);
        wxSVGFileDC (wxString f, int Width, int Height, float dpi);
        ~wxSVGFileDC();


        bool CanDrawBitmap() const { return true; };

        bool CanGetTextExtent() const { return true; };

        int GetDepth() const
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::GetDepth Call not implemented")); return -1 ; };

        void BeginDrawing() { return;};

        bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC* source, wxCoord xsrc, wxCoord ysrc, int logicalFunc = wxCOPY, bool useMask = false)
            { return DoBlit(xdest, ydest, width, height, source, xsrc, ysrc, logicalFunc, useMask); };

        void Clear()
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::Clear() Call not implemented \nNot sensible for an output file?")); return ; };

        void CrossHair(wxCoord x, wxCoord y)
            { DoCrossHair (x,y); return; };

        virtual void ComputeScaleAndOrigin();

        void DestroyClippingRegion()
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::void Call not yet implemented")); return ; };

        wxCoord DeviceToLogicalX(wxCoord x) const ;

        wxCoord DeviceToLogicalXRel(wxCoord x)  const ;

        wxCoord DeviceToLogicalY(wxCoord y)  const ;

        wxCoord DeviceToLogicalYRel(wxCoord y)  const ;

        void DrawBitmap(const wxBitmap& bitmap, wxCoord x, wxCoord y, bool transparent)
            {  DoDrawBitmap ( bitmap, x, y, transparent ) ; return ;};

        void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
            {DoDrawIcon(icon, x, y) ; return ; };

        void DoDrawLines(int n, wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0) ;

        void EndDoc()
            { return ; };

        void EndDrawing()
            { return ; };

        void EndPage()
            {  return ; };

        void FloodFill(wxCoord x, wxCoord y, wxColour *colour, int style=wxFLOOD_SURFACE)
            { DoFloodFill (x, y, *colour, style); return ;} ;

        wxCoord GetCharHeight() const;

        wxCoord GetCharWidth() const;

        void GetClippingBox(wxCoord *WXUNUSED(x), wxCoord *WXUNUSED(y), wxCoord * WXUNUSED(width), wxCoord * WXUNUSED(height))
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::GetClippingBox Call not yet implemented")); return ; };

        int GetLogicalFunction()
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::GetLogicalFunction()  Call not implemented")); return wxCOPY ; };

        int GetMapMode() ;

        bool GetPixel(wxCoord x, wxCoord y, wxColour *colour)
            { return DoGetPixel (x, y, colour) ; } ;

        void GetUserScale(double *x, double *y) const ;

        wxCoord LogicalToDeviceX(wxCoord x)  const ;

        wxCoord LogicalToDeviceXRel(wxCoord x)  const ;

        wxCoord LogicalToDeviceY(wxCoord y)  const ;

        wxCoord LogicalToDeviceYRel(wxCoord y)  const ;

        bool Ok() const {return m_OK;};

        void SetAxisOrientation( bool xLeftRight, bool yBottomUp ) ;

        void SetClippingRegion(wxCoord  WXUNUSED(x), wxCoord  WXUNUSED(y), wxCoord  WXUNUSED(width), wxCoord  WXUNUSED(height))
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::SetClippingRegion Call not yet implemented")); return ; };

        void SetPalette(const wxPalette&  WXUNUSED(palette))
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::SetPalette Call not yet implemented")); return ; };

        void SetBackground( const wxBrush &brush ) ;

        void SetBackgroundMode( int mode ) ;

        void SetBrush(const wxBrush& brush) ;

        void SetFont(const wxFont& font) ;

        void SetLogicalFunction(int  WXUNUSED(function))
            { wxASSERT_MSG (false, wxT("wxSVGFILEDC::SetLogicalFunction Call implemented")); return ; };

        void SetLogicalScale( double x, double y ) ;

        void SetLogicalOrigin( wxCoord x, wxCoord y ) ;

        void SetDeviceOrigin( wxCoord x, wxCoord y ) ;

        void SetMapMode(int anint) ;

        void SetPen(const wxPen& pen)  ;

        void SetUserScale(double xScale, double yScale) ;

        bool StartDoc(const wxString&  WXUNUSED(message))
            {  return false; };

        void StartPage()
            {  return ; };


};

#ifdef __BORLANDC__
#pragma warn .rch
#pragma warn .ccc
#endif
#endif