gprint.cpp

Wxpython Implemented on Windows CE, Source code

        return;
    const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
#endif

    size_t datalen = strlen((const char*)data);
    pango_layout_set_text( m_layout, (const char*) data, datalen);

    if (underlined)
    {
        PangoAttrList *attrs = pango_attr_list_new();
        PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
        a->start_index = 0;
        a->end_index = datalen;
        pango_attr_list_insert(attrs, a);
        pango_layout_set_attributes(m_layout, attrs);
        pango_attr_list_unref(attrs);
    }

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

        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;

            gs_lgp->gnome_print_setrgbcolor( m_gpc, redPS, greenPS, bluePS );

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

    int w,h;

    if (fabs(m_scaleY - 1.0) > 0.00001)
    {
        // If there is a user or actually any scale applied to
        // the device context, scale the font.

        // scale font description
        gint oldSize = pango_font_description_get_size( m_fontdesc );
        double size = oldSize;
        size = size * m_scaleY;
        pango_font_description_set_size( m_fontdesc, (gint)size );

        // actually apply scaled font
        pango_layout_set_font_description( m_layout, m_fontdesc );

        pango_layout_get_pixel_size( m_layout, &w, &h );
#if 0
        if ( m_backgroundMode == wxSOLID )
        {
            gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
            gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
            gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
        }
#endif
        // Draw layout.
        gs_lgp->gnome_print_moveto (m_gpc, x, y);
        if (fabs(angle) > 0.00001)
        {
            gs_lgp->gnome_print_gsave( m_gpc );
            gs_lgp->gnome_print_rotate( m_gpc, angle );
            gs_lgp->gnome_print_pango_layout( m_gpc, m_layout );
            gs_lgp->gnome_print_grestore( m_gpc );
        }
        else
        {
            gs_lgp->gnome_print_pango_layout( m_gpc, m_layout );
        }

        // reset unscaled size
        pango_font_description_set_size( m_fontdesc, oldSize );

        // actually apply unscaled font
        pango_layout_set_font_description( m_layout, m_fontdesc );
    }
    else
    {
        pango_layout_get_pixel_size( m_layout, &w, &h );
#if 0
        if ( m_backgroundMode == wxSOLID )
        {
            gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
            gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
            gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
        }
#endif
        // Draw layout.
        gs_lgp->gnome_print_moveto (m_gpc, x, y);
        if (fabs(angle) > 0.00001)
        {
            gs_lgp->gnome_print_gsave( m_gpc );
            gs_lgp->gnome_print_rotate( m_gpc, angle );
            gs_lgp->gnome_print_pango_layout( m_gpc, m_layout );
            gs_lgp->gnome_print_grestore( m_gpc );
        }
        else
        {
            gs_lgp->gnome_print_pango_layout( m_gpc, m_layout );
        }
    }

    if (underlined)
    {
        // undo underline attributes setting:
        pango_layout_set_attributes(m_layout, NULL);
    }

    CalcBoundingBox (x + w, y + h);
}

void wxGnomePrintDC::Clear()
{
}

void wxGnomePrintDC::SetFont( const wxFont& font )
{
    m_font = font;

    if (m_font.Ok())
    {
        if (m_fontdesc)
            pango_font_description_free( m_fontdesc );

        m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );

        pango_layout_set_font_description( m_layout, m_fontdesc );
    }
}

void wxGnomePrintDC::SetPen( const wxPen& pen )
{
    if (!pen.Ok()) return;

    m_pen = pen;

    gs_lgp->gnome_print_setlinewidth( m_gpc, XLOG2DEVREL( 1000 * m_pen.GetWidth() ) / 1000.0f );

    static const double dotted[] =  {2.0, 5.0};
    static const double short_dashed[] = {4.0, 4.0};
    static const double wxCoord_dashed[] = {4.0, 8.0};
    static const double dotted_dashed[] = {6.0, 6.0, 2.0, 6.0};

    switch (m_pen.GetStyle())
    {
        case wxDOT:           gs_lgp->gnome_print_setdash( m_gpc, 2, dotted, 0 ); break;
        case wxSHORT_DASH:    gs_lgp->gnome_print_setdash( m_gpc, 2, short_dashed, 0 ); break;
        case wxLONG_DASH:     gs_lgp->gnome_print_setdash( m_gpc, 2, wxCoord_dashed, 0 ); break;
        case wxDOT_DASH:      gs_lgp->gnome_print_setdash( m_gpc, 4, dotted_dashed, 0 );  break;
        case wxUSER_DASH:
        {
            // It may be noted that libgnomeprint between at least
            // versions 2.8.0 and 2.12.1 makes a copy of the dashes
            // and then leak the memory since it doesn't set the
            // internal flag "privatedash" to 0.
            wxDash *wx_dashes;
            int num = m_pen.GetDashes (&wx_dashes);
            gdouble *g_dashes = g_new( gdouble, num );
            int i;
            for (i = 0; i < num; ++i)
                g_dashes[i] = (gdouble) wx_dashes[i];
            gs_lgp -> gnome_print_setdash( m_gpc, num, g_dashes, 0);
            g_free( g_dashes );
        }
        break;
        case wxSOLID:
        case wxTRANSPARENT:
        default:              gs_lgp->gnome_print_setdash( m_gpc, 0, NULL, 0 );   break;
    }


    unsigned char red = m_pen.GetColour().Red();
    unsigned char blue = m_pen.GetColour().Blue();
    unsigned char green = m_pen.GetColour().Green();

    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;

        gs_lgp->gnome_print_setrgbcolor( m_gpc, redPS, greenPS, bluePS );

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

void wxGnomePrintDC::SetBrush( const wxBrush& brush )
{
    if (!brush.Ok()) return;

    m_brush = brush;

    // Brush colour
    unsigned char red = m_brush.GetColour().Red();
    unsigned char blue = m_brush.GetColour().Blue();
    unsigned char green = m_brush.GetColour().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;
        }
        // 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;

        gs_lgp->gnome_print_setrgbcolor( m_gpc, redPS, greenPS, bluePS );

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

void wxGnomePrintDC::SetLogicalFunction( int function )
{
}

void wxGnomePrintDC::SetBackground( const wxBrush& brush )
{
}

void wxGnomePrintDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
{
}

void wxGnomePrintDC::DestroyClippingRegion()
{
}

bool wxGnomePrintDC::StartDoc(const wxString& message)
{
    SetDeviceOrigin( 0,0 );

    return true;
}

void wxGnomePrintDC::EndDoc()
{
    gs_lgp->gnome_print_end_doc( m_gpc );
}

void wxGnomePrintDC::StartPage()
{
    gs_lgp->gnome_print_beginpage( m_gpc, (const guchar*) "page" );
}

void wxGnomePrintDC::EndPage()
{
    gs_lgp->gnome_print_showpage( m_gpc );
}

wxCoord wxGnomePrintDC::GetCharHeight() const
{
    pango_layout_set_text( m_layout, "H", 1 );

    int w,h;
    pango_layout_get_pixel_size( m_layout, &w, &h );

    return h;
}

wxCoord wxGnomePrintDC::GetCharWidth() const
{
    pango_layout_set_text( m_layout, "H", 1 );

    int w,h;
    pango_layout_get_pixel_size( m_layout, &w, &h );

    return w;
}

void wxGnomePrintDC::DoGetTextExtent(const wxString& string, wxCoord *width, wxCoord *height,
                     wxCoord *descent,
                     wxCoord *externalLeading,
                     wxFont *theFont ) const
{
    if ( width )
        *width = 0;
    if ( height )
        *height = 0;
    if ( descent )
        *descent = 0;
    if ( externalLeading )
        *externalLeading = 0;

    if (string.empty())
    {
        return;
    }

    // Set new font description
    if (theFont)
        pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );

    // Set layout's text
#if wxUSE_UNICODE
    const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
    const char *dataUTF8 = (const char *)data;
#else
    const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
    if ( !wdata )
    {
        if (width) (*width) = 0;
        if (height) (*height) = 0;
        return;
    }
    const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
    const char *dataUTF8 = (const char *)data;
#endif

    if ( !dataUTF8 )
    {
        // hardly ideal, but what else can we do if conversion failed?
        return;
    }

    pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );

    int w,h;
    pango_layout_get_pixel_size( m_layout, &w, &h );

    if (width)
        *width = (wxCoord)(w / m_scaleX);
    if (height)
        *height = (wxCoord)(h / m_scaleY);
    if (descent)
    {
        PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
        int baseline = pango_layout_iter_get_baseline(iter);
        pango_layout_iter_free(iter);
        *descent = h - PANGO_PIXELS(baseline);
    }

    // Reset old font description
    if (theFont)
        pango_layout_set_font_description( m_layout, m_fontdesc );
}

void wxGnomePrintDC::DoGetSize(int* width, int* height) const
{
    wxGnomePrintNativeData *native =
      (wxGnomePrintNativeData*) m_printData.GetNativeData();

    // Query page size. This seems to omit the margins
    // right now, although it shouldn't
    double pw,ph;
    gs_lgp->gnome_print_job_get_page_size( native->GetPrintJob(), &pw, &ph );

    if (width)
        *width = (int) (pw + 0.5);
    if (height)
        *height = (int) (ph + 0.5);
}

void wxGnomePrintDC::DoGetSizeMM(int *width, int *height) const
{
    wxGnomePrintNativeData *native =
      (wxGnomePrintNativeData*) m_printData.GetNativeData();

    // This code assumes values in Pts.

    double pw,ph;
    gs_lgp->gnome_print_job_get_page_size( native->GetPrintJob(), &pw, &ph );

    // Convert to mm.

    const GnomePrintUnit *mm_unit = gs_lgp->gnome_print_unit_get_by_abbreviation( (const guchar*) "mm" );
    const GnomePrintUnit *pts_unit = gs_lgp->gnome_print_unit_get_by_abbreviation( (const guchar*) "Pts" );
    gs_lgp->gnome_print_convert_distance( &pw, pts_unit, mm_unit );
    gs_lgp->gnome_print_convert_distance( &ph, pts_unit, mm_unit );

    if (width)
        *width = (int) (pw + 0.5);
    if (height)
        *height = (int) (ph + 0.5);
}

wxSize wxGnomePrintDC::GetPPI() const
{
    return wxSize(72,72);
}

void wxGnomePrintDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
    m_signX = (xLeftRight ? 1 : -1);
    m_signY = (yBottomUp  ? 1 : -1);

    ComputeScaleAndOrigin();
}

void wxGnomePrintDC::SetDeviceOrigin( wxCoord x, wxCoord y )
{
    int h = 0;
    int w = 0;
    GetSize( &w, &h );

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

void wxGnomePrintDC::SetResolution(int ppi)
{
}

int wxGnomePrintDC::GetResolution()
{
    return 72;
}


class wxGnomePrintModule: public wxModule
{
public:
    wxGnomePrintModule() {}
    bool OnInit();
    void OnExit();

private:
    DECLARE_DYNAMIC_CLASS(wxGnomePrintModule)
};

bool wxGnomePrintModule::OnInit()
{
    gs_lgp = new wxGnomePrintLibrary;
    if (gs_lgp->IsOk())
        wxPrintFactory::SetPrintFactory( new wxGnomePrintFactory );
    return true;
}

void wxGnomePrintModule::OnExit()
{
    delete gs_lgp;
}

IMPLEMENT_DYNAMIC_CLASS(wxGnomePrintModule, wxModule)

#endif
    // wxUSE_LIBGNOMEPRINT