htmprint.cpp

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void wxHtmlPrintout::CountPages()
{
    wxBusyCursor wait;
    int pageWidth, pageHeight, mm_w, mm_h;
    float ppmm_h, ppmm_v;

    GetPageSizePixels(&pageWidth, &pageHeight);
    GetPageSizeMM(&mm_w, &mm_h);
    ppmm_h = (float)pageWidth / mm_w;
    ppmm_v = (float)pageHeight / mm_h;

    int pos = 0;

    m_NumPages = 0;

    m_PageBreaks[0] = 0;
    do
    {
        pos = m_Renderer->Render((int)( ppmm_h * m_MarginLeft),
                                   (int) (ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight),
                                   pos, true, INT_MAX, m_PageBreaks, m_NumPages);
        m_PageBreaks[++m_NumPages] = pos;
    } while (pos < m_Renderer->GetTotalHeight());
}



void wxHtmlPrintout::RenderPage(wxDC *dc, int page)
{
    wxBusyCursor wait;

    int pageWidth, pageHeight, mm_w, mm_h, scr_w, scr_h, dc_w, dc_h;
    float ppmm_h, ppmm_v;

    GetPageSizePixels(&pageWidth, &pageHeight);
    GetPageSizeMM(&mm_w, &mm_h);
    ppmm_h = (float)pageWidth / mm_w;
    ppmm_v = (float)pageHeight / mm_h;
    wxDisplaySize(&scr_w, &scr_h);
    dc->GetSize(&dc_w, &dc_h);

    int ppiPrinterX, ppiPrinterY;
    GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
    wxUnusedVar(ppiPrinterX);
    int ppiScreenX, ppiScreenY;
    GetPPIScreen(&ppiScreenX, &ppiScreenY);
    wxUnusedVar(ppiScreenX);

    dc->SetUserScale((double)dc_w / (double)pageWidth, (double)dc_w / (double)pageWidth);

    m_Renderer->SetDC(dc, (double)ppiPrinterY / (double)ppiScreenY);

    dc->SetBackgroundMode(wxTRANSPARENT);

    m_Renderer->Render((int) (ppmm_h * m_MarginLeft),
                         (int) (ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight),
                         m_PageBreaks[page-1], false, m_PageBreaks[page]-m_PageBreaks[page-1]);

    m_RendererHdr->SetDC(dc, (double)ppiPrinterY / (double)ppiScreenY);
    if (m_Headers[page % 2] != wxEmptyString)
    {
        m_RendererHdr->SetHtmlText(TranslateHeader(m_Headers[page % 2], page));
        m_RendererHdr->Render((int) (ppmm_h * m_MarginLeft), (int) (ppmm_v * m_MarginTop));
    }
    if (m_Footers[page % 2] != wxEmptyString)
    {
        m_RendererHdr->SetHtmlText(TranslateHeader(m_Footers[page % 2], page));
        m_RendererHdr->Render((int) (ppmm_h * m_MarginLeft), (int) (pageHeight - ppmm_v * m_MarginBottom - m_FooterHeight));
    }
}



wxString wxHtmlPrintout::TranslateHeader(const wxString& instr, int page)
{
    wxString r = instr;
    wxString num;

    num.Printf(wxT("%i"), page);
    r.Replace(wxT("@PAGENUM@"), num);

    num.Printf(wxT("%i"), m_NumPages);
    r.Replace(wxT("@PAGESCNT@"), num);

    return r;
}



void wxHtmlPrintout::SetMargins(float top, float bottom, float left, float right, float spaces)
{
    m_MarginTop = top;
    m_MarginBottom = bottom;
    m_MarginLeft = left;
    m_MarginRight = right;
    m_MarginSpace = spaces;
}




void wxHtmlPrintout::SetFonts(wxString normal_face, wxString fixed_face,
                              const int *sizes)
{
    m_Renderer->SetFonts(normal_face, fixed_face, sizes);
    m_RendererHdr->SetFonts(normal_face, fixed_face, sizes);
}

void wxHtmlPrintout::SetStandardFonts(int size,
                                      const wxString& normal_face,
                                      const wxString& fixed_face)
{
    m_Renderer->SetStandardFonts(size, normal_face, fixed_face);
    m_RendererHdr->SetStandardFonts(size, normal_face, fixed_face);
}



//----------------------------------------------------------------------------
// wxHtmlEasyPrinting
//----------------------------------------------------------------------------


wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxWindow *parentWindow)
{
    m_ParentWindow = parentWindow;
    m_Name = name;
    m_PrintData = NULL;
    m_PageSetupData = new wxPageSetupDialogData;
    m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;

    m_PageSetupData->EnableMargins(true);
    m_PageSetupData->SetMarginTopLeft(wxPoint(25, 25));
    m_PageSetupData->SetMarginBottomRight(wxPoint(25, 25));

    SetFonts(wxEmptyString, wxEmptyString, NULL);
}



wxHtmlEasyPrinting::~wxHtmlEasyPrinting()
{
    delete m_PrintData;
    delete m_PageSetupData;
}


wxPrintData *wxHtmlEasyPrinting::GetPrintData()
{
    if (m_PrintData == NULL)
        m_PrintData = new wxPrintData();
    return m_PrintData;
}


bool wxHtmlEasyPrinting::PreviewFile(const wxString &htmlfile)
{
    wxHtmlPrintout *p1 = CreatePrintout();
    p1->SetHtmlFile(htmlfile);
    wxHtmlPrintout *p2 = CreatePrintout();
    p2->SetHtmlFile(htmlfile);
    return DoPreview(p1, p2);
}



bool wxHtmlEasyPrinting::PreviewText(const wxString &htmltext, const wxString &basepath)
{
    wxHtmlPrintout *p1 = CreatePrintout();
    p1->SetHtmlText(htmltext, basepath, true);
    wxHtmlPrintout *p2 = CreatePrintout();
    p2->SetHtmlText(htmltext, basepath, true);
    return DoPreview(p1, p2);
}



bool wxHtmlEasyPrinting::PrintFile(const wxString &htmlfile)
{
    wxHtmlPrintout *p = CreatePrintout();
    p->SetHtmlFile(htmlfile);
    bool ret = DoPrint(p);
    delete p;
    return ret;
}



bool wxHtmlEasyPrinting::PrintText(const wxString &htmltext, const wxString &basepath)
{
    wxHtmlPrintout *p = CreatePrintout();
    p->SetHtmlText(htmltext, basepath, true);
    bool ret = DoPrint(p);
    delete p;
    return ret;
}



bool wxHtmlEasyPrinting::DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2)
{
    // Pass two printout objects: for preview, and possible printing.
    wxPrintDialogData printDialogData(*GetPrintData());
    wxPrintPreview *preview = new wxPrintPreview(printout1, printout2, &printDialogData);
    if (!preview->Ok())
    {
        delete preview;
        return false;
    }

    wxPreviewFrame *frame = new wxPreviewFrame(preview, m_ParentWindow,
                                               m_Name + _(" Preview"),
                                               wxPoint(100, 100), wxSize(650, 500));
    frame->Centre(wxBOTH);
    frame->Initialize();
    frame->Show(true);
    return true;
}



bool wxHtmlEasyPrinting::DoPrint(wxHtmlPrintout *printout)
{
    wxPrintDialogData printDialogData(*GetPrintData());
    wxPrinter printer(&printDialogData);

    if (!printer.Print(m_ParentWindow, printout, true))
    {
        return false;
    }

    (*GetPrintData()) = printer.GetPrintDialogData().GetPrintData();
    return true;
}




void wxHtmlEasyPrinting::PageSetup()
{
    if (!GetPrintData()->Ok())
    {
        wxLogError(_("There was a problem during page setup: you may need to set a default printer."));
        return;
    }

    m_PageSetupData->SetPrintData(*GetPrintData());
    wxPageSetupDialog pageSetupDialog(m_ParentWindow, m_PageSetupData);

    if (pageSetupDialog.ShowModal() == wxID_OK)
    {
        (*GetPrintData()) = pageSetupDialog.GetPageSetupData().GetPrintData();
        (*m_PageSetupData) = pageSetupDialog.GetPageSetupData();
    }
}



void wxHtmlEasyPrinting::SetHeader(const wxString& header, int pg)
{
    if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
        m_Headers[0] = header;
    if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
        m_Headers[1] = header;
}



void wxHtmlEasyPrinting::SetFooter(const wxString& footer, int pg)
{
    if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
        m_Footers[0] = footer;
    if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
        m_Footers[1] = footer;
}


void wxHtmlEasyPrinting::SetFonts(wxString normal_face, wxString fixed_face,
                                  const int *sizes)
{
    m_fontMode = FontMode_Explicit;
    m_FontFaceNormal = normal_face;
    m_FontFaceFixed = fixed_face;

    if (sizes)
    {
        m_FontsSizes = m_FontsSizesArr;
        for (int i = 0; i < 7; i++) m_FontsSizes[i] = sizes[i];
    }
    else
        m_FontsSizes = NULL;
}

void wxHtmlEasyPrinting::SetStandardFonts(int size,
                                          const wxString& normal_face,
                                          const wxString& fixed_face)
{
    m_fontMode = FontMode_Standard;
    m_FontFaceNormal = normal_face;
    m_FontFaceFixed = fixed_face;
    m_FontsSizesArr[0] = size;
}


wxHtmlPrintout *wxHtmlEasyPrinting::CreatePrintout()
{
    wxHtmlPrintout *p = new wxHtmlPrintout(m_Name);

    if (m_fontMode == FontMode_Explicit)
    {
        p->SetFonts(m_FontFaceNormal, m_FontFaceFixed, m_FontsSizes);
    }
    else // FontMode_Standard
    {
        p->SetStandardFonts(m_FontsSizesArr[0],
                            m_FontFaceNormal, m_FontFaceFixed);
    }

    p->SetHeader(m_Headers[0], wxPAGE_EVEN);
    p->SetHeader(m_Headers[1], wxPAGE_ODD);
    p->SetFooter(m_Footers[0], wxPAGE_EVEN);
    p->SetFooter(m_Footers[1], wxPAGE_ODD);

    p->SetMargins(m_PageSetupData->GetMarginTopLeft().y,
                    m_PageSetupData->GetMarginBottomRight().y,
                    m_PageSetupData->GetMarginTopLeft().x,
                    m_PageSetupData->GetMarginBottomRight().x);

    return p;
}

// A module to allow initialization/cleanup
// without calling these functions from app.cpp or from
// the user's application.

class wxHtmlPrintingModule: public wxModule
{
DECLARE_DYNAMIC_CLASS(wxHtmlPrintingModule)
public:
    wxHtmlPrintingModule() : wxModule() {}
    bool OnInit() { return true; }
    void OnExit() { wxHtmlPrintout::CleanUpStatics(); }
};

IMPLEMENT_DYNAMIC_CLASS(wxHtmlPrintingModule, wxModule)


// This hack forces the linker to always link in m_* files
// (wxHTML doesn't work without handlers from these files)
#include "wx/html/forcelnk.h"
FORCE_WXHTML_MODULES()

#endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE