dcpsg.cpp

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C++ 代码 · 共 2,062 行 · 第 1/5 页

    PsPrint( ") show\n" );

    if (m_font.GetUnderlined())
    {
        wxCoord uy = (wxCoord)(y + size - m_underlinePosition);
        char buffer[100];

        sprintf( buffer,
                "gsave\n"
                "%d %d moveto\n"
                "%f setlinewidth\n"
                "%d %d lineto\n"
                "stroke\n"
                "grestore\n",
                LogicalToDeviceX(x), LogicalToDeviceY(uy),
                m_underlineThickness,
                LogicalToDeviceX(x + text_w), LogicalToDeviceY(uy) );
        for (i = 0; i < 100; i++)
            if (buffer[i] == ',') buffer[i] = '.';
        PsPrint( buffer );
    }

    CalcBoundingBox( x, y );
    CalcBoundingBox( x + size * text.Length() * 2/3 , y );
}

void wxPostScriptDC::DoDrawRotatedText( const wxString& text, wxCoord x, wxCoord y, double angle )
{
    if (angle == 0.0)
    {
        DoDrawText(text, x, y);
        return;
    }

    wxCHECK_RET( m_ok, wxT("invalid postscript dc") );

    SetFont( m_font );

    if (m_textForegroundColour.Ok())
    {
        unsigned char red = m_textForegroundColour.Red();
        unsigned char blue = m_textForegroundColour.Blue();
        unsigned char green = m_textForegroundColour.Green();

        if (!m_colour)
        {
            // Anything not white is black
            if (! (red == (unsigned char) 255 &&
                   blue == (unsigned char) 255 &&
                   green == (unsigned char) 255))
            {
                red = (unsigned char) 0;
                green = (unsigned char) 0;
                blue = (unsigned char) 0;
            }
        }

        // maybe setgray here ?
        if (!(red == m_currentRed && green == m_currentGreen && blue == m_currentBlue))
        {
            double redPS = (double)(red) / 255.0;
            double bluePS = (double)(blue) / 255.0;
            double greenPS = (double)(green) / 255.0;

            char buffer[100];
            sprintf( buffer,
                "%.8f %.8f %.8f setrgbcolor\n",
                redPS, greenPS, bluePS );
            for (int i = 0; i < 100; i++)
                if (buffer[i] == ',') buffer[i] = '.';
            PsPrint( buffer );

            m_currentRed = red;
            m_currentBlue = blue;
            m_currentGreen = green;
        }
    }

    int size = m_font.GetPointSize();

    PsPrintf( wxT("%d %d moveto\n"),
            LogicalToDeviceX(x), LogicalToDeviceY(y));

    char buffer[100];
    sprintf(buffer, "%.8f rotate\n", angle);
    size_t i;
    for (i = 0; i < 100; i++)
    {
        if (buffer[i] == ',') buffer[i] = '.';
    }
    PsPrint( buffer);

    PsPrint( "(" );
    const wxWX2MBbuf textbuf = text.mb_str();
    size_t len = strlen(textbuf);
    for (i = 0; i < len; i++)
    {
        int c = (unsigned char) textbuf[i];
        if (c == ')' || c == '(' || c == '\\')
        {
            /* Cope with special characters */
            PsPrint( "\\" );
            PsPrint(c);
        }
        else if ( c >= 128 )
        {
            /* Cope with character codes > 127 */
            PsPrintf( wxT("\\%o"), c);
        }
        else
        {
            PsPrint(c);
        }
    }

    PsPrint( ") show\n" );

    sprintf( buffer, "%.8f rotate\n", -angle );
    for (i = 0; i < 100; i++)
    {
        if (buffer[i] == ',') buffer[i] = '.';
    }
    PsPrint( buffer );

    if (m_font.GetUnderlined())
    {
        wxCoord uy = (wxCoord)(y + size - m_underlinePosition);
        wxCoord w, h;
        char buffer[100];
        GetTextExtent(text, &w, &h);

        sprintf( buffer,
                "gsave\n"
                "%d %d moveto\n"
                "%f setlinewidth\n"
                "%d %d lineto\n"
                "stroke\n"
                "grestore\n",
                LogicalToDeviceX(x), LogicalToDeviceY(uy),
                m_underlineThickness,
                LogicalToDeviceX(x + w), LogicalToDeviceY(uy) );
        for (i = 0; i < 100; i++)
        {
            if (buffer[i] == ',') buffer[i] = '.';
        }
        PsPrint( buffer );
    }

    CalcBoundingBox( x, y );
    CalcBoundingBox( x + size * text.Length() * 2/3 , y );
}

void wxPostScriptDC::SetBackground (const wxBrush& brush)
{
    m_backgroundBrush = brush;
}

void wxPostScriptDC::SetLogicalFunction (int WXUNUSED(function))
{
    wxFAIL_MSG( wxT("wxPostScriptDC::SetLogicalFunction not implemented.") );
}

#if wxUSE_SPLINES
void wxPostScriptDC::DoDrawSpline( wxList *points )
{
    wxCHECK_RET( m_ok, wxT("invalid postscript dc") );

    SetPen( m_pen );

    // a and b are not used
    //double a, b;
    double c, d, x1, y1, x2, y2, x3, y3;
    wxPoint *p, *q;

    wxList::compatibility_iterator node = points->GetFirst();
    p = (wxPoint *)node->GetData();
    x1 = p->x;
    y1 = p->y;

    node = node->GetNext();
    p = (wxPoint *)node->GetData();
    c = p->x;
    d = p->y;
    x3 =
         #if 0
         a =
         #endif
         (double)(x1 + c) / 2;
    y3 =
         #if 0
         b =
         #endif
         (double)(y1 + d) / 2;

    PsPrintf( wxT("newpath\n")
              wxT("%d %d moveto\n")
              wxT("%d %d lineto\n"),
            LogicalToDeviceX((wxCoord)x1), LogicalToDeviceY((wxCoord)y1),
            LogicalToDeviceX((wxCoord)x3), LogicalToDeviceY((wxCoord)y3) );

    CalcBoundingBox( (wxCoord)x1, (wxCoord)y1 );
    CalcBoundingBox( (wxCoord)x3, (wxCoord)y3 );

    node = node->GetNext();
    while (node)
    {
        q = (wxPoint *)node->GetData();

        x1 = x3;
        y1 = y3;
        x2 = c;
        y2 = d;
        c = q->x;
        d = q->y;
        x3 = (double)(x2 + c) / 2;
        y3 = (double)(y2 + d) / 2;

        PsPrintf( wxT("%d %d %d %d %d %d DrawSplineSection\n"),
            LogicalToDeviceX((wxCoord)x1), LogicalToDeviceY((wxCoord)y1),
            LogicalToDeviceX((wxCoord)x2), LogicalToDeviceY((wxCoord)y2),
            LogicalToDeviceX((wxCoord)x3), LogicalToDeviceY((wxCoord)y3) );

        CalcBoundingBox( (wxCoord)x1, (wxCoord)y1 );
        CalcBoundingBox( (wxCoord)x3, (wxCoord)y3 );

        node = node->GetNext();
    }

    /*
       At this point, (x2,y2) and (c,d) are the position of the
       next-to-last and last point respectively, in the point list
     */

    PsPrintf( wxT("%d %d lineto\n")
              wxT("stroke\n"),
            LogicalToDeviceX((wxCoord)c), LogicalToDeviceY((wxCoord)d) );
}
#endif // wxUSE_SPLINES

wxCoord wxPostScriptDC::GetCharWidth() const
{
    // Chris Breeze: reasonable approximation using wxMODERN/Courier
    return (wxCoord) (GetCharHeight() * 72.0 / 120.0);
}


void wxPostScriptDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
    wxCHECK_RET( m_ok, wxT("invalid postscript dc") );

    m_signX = (xLeftRight ? 1 : -1);
    m_signY = (yBottomUp  ? 1 : -1);

    ComputeScaleAndOrigin();
}

void wxPostScriptDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
    wxCHECK_RET( m_ok, wxT("invalid postscript dc") );

    int h = 0;
    int w = 0;
    GetSize( &w, &h );

    wxDC::SetDeviceOrigin( x, h-y );
}

void wxPostScriptDC::DoGetSize(int* width, int* height) const
{
    wxPaperSize id = m_printData.GetPaperId();

    wxPrintPaperType *paper = wxThePrintPaperDatabase->FindPaperType(id);

    if (!paper) paper = wxThePrintPaperDatabase->FindPaperType(wxPAPER_A4);

    int w = 595;
    int h = 842;
    if (paper)
    {
        w = paper->GetSizeDeviceUnits().x;
        h = paper->GetSizeDeviceUnits().y;
    }

    if (m_printData.GetOrientation() == wxLANDSCAPE)
    {
        int tmp = w;
        w = h;
        h = tmp;
    }

    if (width) *width = (int)(w * ms_PSScaleFactor);
    if (height) *height = (int)(h * ms_PSScaleFactor);
}

void wxPostScriptDC::DoGetSizeMM(int *width, int *height) const
{
    wxPaperSize id = m_printData.GetPaperId();

    wxPrintPaperType *paper = wxThePrintPaperDatabase->FindPaperType(id);

    if (!paper) paper = wxThePrintPaperDatabase->FindPaperType(wxPAPER_A4);

    int w = 210;
    int h = 297;
    if (paper)
    {
        w = paper->GetWidth() / 10;
        h = paper->GetHeight() / 10;
    }

    if (m_printData.GetOrientation() == wxLANDSCAPE)
    {
        int tmp = w;
        w = h;
        h = tmp;
    }

    if (width) *width = w;
    if (height) *height = h;
}

// Resolution in pixels per logical inch
wxSize wxPostScriptDC::GetPPI(void) const
{
    return wxSize((int)(72 * ms_PSScaleFactor),
                  (int)(72 * ms_PSScaleFactor));
}


bool wxPostScriptDC::StartDoc( const wxString& message )
{
    wxCHECK_MSG( m_ok, false, wxT("invalid postscript dc") );

    if (m_printData.GetPrintMode() != wxPRINT_MODE_STREAM )
    {
        if (m_printData.GetFilename() == wxEmptyString)
        {
            wxString filename = wxGetTempFileName( wxT("ps") );
            m_printData.SetFilename(filename);
        }

        m_pstream = wxFopen( m_printData.GetFilename(), wxT("w+") );

        if (!m_pstream)
        {
            wxLogError( _("Cannot open file for PostScript printing!"));
            m_ok = false;
            return false;
        }
    }

    m_ok = true;
    m_title = message;

    PsPrint( "%!PS-Adobe-2.0\n" );
    PsPrintf( wxT("%%%%Title: %s\n"), m_title.c_str() );
    PsPrint( "%%Creator: wxWidgets PostScript renderer\n" );
    PsPrintf( wxT("%%%%CreationDate: %s\n"), wxNow().c_str() );
    if (m_printData.GetOrientation() == wxLANDSCAPE)
        PsPrint( "%%Orientation: Landscape\n" );
    else
        PsPrint( "%%Orientation: Portrait\n" );

    // PsPrintf( wxT("%%%%Pages: %d\n"), (wxPageNumber - 1) );

    const wxChar *paper;
    switch (m_printData.GetPaperId())
    {
       case wxPAPER_LETTER: paper = wxT("Letter"); break;             // Letter: paper ""; 8 1/2 by 11 inches
       case wxPAPER_LEGAL: paper = wxT("Legal"); break;              // Legal, 8 1/2 by 14 inches
       case wxPAPER_A4: paper = wxT("A4"); break;          // A4 Sheet, 210 by 297 millimeters
       case wxPAPER_TABLOID: paper = wxT("Tabloid"); break;     // Tabloid, 11 by 17 inches
       case wxPAPER_LEDGER: paper = wxT("Ledger"); break;      // Ledger, 17 by 11 inches
       case wxPAPER_STATEMENT: paper = wxT("Statement"); break;   // Statement, 5 1/2 by 8 1/2 inches
       case wxPAPER_EXECUTIVE: paper = wxT("Executive"); break;   // Executive, 7 1/4 by 10 1/2 inches
       case wxPAPER_A3: paper = wxT("A3"); break;          // A3 sheet, 297 by 420 millimeters
       case wxPAPER_A5: paper = wxT("A5"); break;          // A5 sheet, 148 by 210 millimeters
       case wxPAPER_B4: paper = wxT("B4"); break;          // B4 sheet, 250 by 354 millimeters
       case wxPAPER_B5: paper = wxT("B5"); break;          // B5 sheet, 182-by-257-millimeter paper
       case wxPAPER_FOLIO: paper = wxT("Folio"); break;       // Folio, 8-1/2-by-13-inch paper
       case wxPAPER_QUARTO: paper = wxT("Quaro"); break;      // Quarto, 215-by-275-millimeter paper
       case wxPAPER_10X14: paper = wxT("10x14"); break;       // 10-by-14-inch sheet
       default: paper = wxT("A4");
    }
    PsPrintf( wxT("%%%%DocumentPaperSizes: %s\n"), paper );
    PsPrint( "%%EndComments\n\n" );

    PsPrint( "%%BeginProlog\n" );
    PsPrint( wxPostScriptHeaderConicTo );
    PsPrint( wxPostScriptHeaderEllipse );
    PsPrint( wxPostScriptHeaderEllipticArc );
    PsPrint( wxPostScriptHeaderColourImage );
    PsPrint( wxPostScriptHeaderReencodeISO1 );
    PsPrint( wxPostScriptHeaderReencodeISO2 );
    if (wxPostScriptHeaderSpline)
        PsPrint( wxPostScriptHeaderSpline );
    PsPrint( "%%EndProlog\n" );

    SetBrush( *wxBLACK_BRUSH );
    SetPen( *wxBLACK_PEN );
    SetBackground( *wxWHITE_BRUSH );
    SetTextForeground( *wxBLACK );

    // set origin according to paper size
    SetDeviceOrigin( 0,0 );

    wxPageNumber = 1;
    m_pageNumber = 1;
    return true;
}

void wxPostScriptDC::EndDoc ()
{