///////////////////////////////////////////////////////////////////////////// // Name: src/common/prntbase.cpp // Purpose: Printing framework base class implementation // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id: prntbase.cpp 58209 2009-01-18 21:31:36Z RD $ // Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #if wxUSE_PRINTING_ARCHITECTURE // change this to 1 to use experimental high-quality printing on Windows // (NB: this can't be in msw/printwin.cpp because of binary compatibility) #define wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW 0 #if wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW #if !defined(__WXMSW__) || !wxUSE_IMAGE || !wxUSE_WXDIB #undef wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW #define wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW 0 #endif #endif #include "wx/dcprint.h" #ifndef WX_PRECOMP #if defined(__WXMSW__) #include "wx/msw/wrapcdlg.h" #endif // MSW #include "wx/utils.h" #include "wx/dc.h" #include "wx/app.h" #include "wx/math.h" #include "wx/msgdlg.h" #include "wx/layout.h" #include "wx/choice.h" #include "wx/button.h" #include "wx/settings.h" #include "wx/dcmemory.h" #include "wx/stattext.h" #include "wx/intl.h" #include "wx/textdlg.h" #include "wx/sizer.h" #include "wx/module.h" #endif // !WX_PRECOMP #include "wx/prntbase.h" #include "wx/printdlg.h" #include "wx/print.h" #include "wx/dcprint.h" #include #include #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) #include "wx/msw/printdlg.h" #elif defined(__WXMAC__) #include "wx/mac/printdlg.h" #include "wx/mac/private/print.h" #else #include "wx/generic/prntdlgg.h" #include "wx/dcps.h" #endif #ifdef __WXMSW__ #ifndef __WIN32__ #include #endif #endif // __WXMSW__ #if wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW #include "wx/msw/dib.h" #include "wx/image.h" typedef bool (wxPrintPreviewBase::*RenderPageIntoDCFunc)(wxDC&, int); static bool RenderPageIntoBitmapHQ(wxPrintPreviewBase *preview, RenderPageIntoDCFunc RenderPageIntoDC, wxPrinterDC& printerDC, wxBitmap& bmp, int pageNum, int pageWidth, int pageHeight); #endif // wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW //---------------------------------------------------------------------------- // wxPrintFactory //---------------------------------------------------------------------------- wxPrintFactory *wxPrintFactory::m_factory = NULL; void wxPrintFactory::SetPrintFactory( wxPrintFactory *factory ) { if (wxPrintFactory::m_factory) delete wxPrintFactory::m_factory; wxPrintFactory::m_factory = factory; } wxPrintFactory *wxPrintFactory::GetFactory() { if (!wxPrintFactory::m_factory) wxPrintFactory::m_factory = new wxNativePrintFactory; return wxPrintFactory::m_factory; } //---------------------------------------------------------------------------- // wxNativePrintFactory //---------------------------------------------------------------------------- wxPrinterBase *wxNativePrintFactory::CreatePrinter( wxPrintDialogData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPrinter( data ); #elif defined(__WXMAC__) return new wxMacPrinter( data ); #elif defined(__WXPM__) return new wxOS2Printer( data ); #else return new wxPostScriptPrinter( data ); #endif } wxPrintPreviewBase *wxNativePrintFactory::CreatePrintPreview( wxPrintout *preview, wxPrintout *printout, wxPrintDialogData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPrintPreview( preview, printout, data ); #elif defined(__WXMAC__) return new wxMacPrintPreview( preview, printout, data ); #elif defined(__WXPM__) return new wxOS2PrintPreview( preview, printout, data ); #else return new wxPostScriptPrintPreview( preview, printout, data ); #endif } wxPrintPreviewBase *wxNativePrintFactory::CreatePrintPreview( wxPrintout *preview, wxPrintout *printout, wxPrintData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPrintPreview( preview, printout, data ); #elif defined(__WXMAC__) return new wxMacPrintPreview( preview, printout, data ); #elif defined(__WXPM__) return new wxOS2PrintPreview( preview, printout, data ); #else return new wxPostScriptPrintPreview( preview, printout, data ); #endif } wxPrintDialogBase *wxNativePrintFactory::CreatePrintDialog( wxWindow *parent, wxPrintDialogData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPrintDialog( parent, data ); #elif defined(__WXMAC__) return new wxMacPrintDialog( parent, data ); #else return new wxGenericPrintDialog( parent, data ); #endif } wxPrintDialogBase *wxNativePrintFactory::CreatePrintDialog( wxWindow *parent, wxPrintData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPrintDialog( parent, data ); #elif defined(__WXMAC__) return new wxMacPrintDialog( parent, data ); #else return new wxGenericPrintDialog( parent, data ); #endif } wxPageSetupDialogBase *wxNativePrintFactory::CreatePageSetupDialog( wxWindow *parent, wxPageSetupDialogData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPageSetupDialog( parent, data ); #elif defined(__WXMAC__) return new wxMacPageSetupDialog( parent, data ); #else return new wxGenericPageSetupDialog( parent, data ); #endif } bool wxNativePrintFactory::HasPrintSetupDialog() { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return false; #elif defined(__WXMAC__) return false; #else // Only here do we need to provide the print setup // dialog ourselves, the other platforms either have // none, don't make it accessible or let you configure // the printer from the wxPrintDialog anyway. return true; #endif } wxDialog *wxNativePrintFactory::CreatePrintSetupDialog( wxWindow *parent, wxPrintData *data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) wxUnusedVar(parent); wxUnusedVar(data); return NULL; #elif defined(__WXMAC__) wxUnusedVar(parent); wxUnusedVar(data); return NULL; #else // Only here do we need to provide the print setup // dialog ourselves, the other platforms either have // none, don't make it accessible or let you configure // the printer from the wxPrintDialog anyway. return new wxGenericPrintSetupDialog( parent, data ); #endif } wxDC* wxNativePrintFactory::CreatePrinterDC( const wxPrintData& data ) { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxPrinterDC(data); #elif defined(__WXMAC__) return new wxPrinterDC(data); #else return new wxPostScriptDC(data); #endif } bool wxNativePrintFactory::HasOwnPrintToFile() { // Only relevant for PostScript and here the // setup dialog provides no "print to file" // option. In the GNOME setup dialog, the // setup dialog has its own print to file. return false; } bool wxNativePrintFactory::HasPrinterLine() { // Only relevant for PostScript for now return true; } wxString wxNativePrintFactory::CreatePrinterLine() { // Only relevant for PostScript for now // We should query "lpstat -d" here return _("Generic PostScript"); } bool wxNativePrintFactory::HasStatusLine() { // Only relevant for PostScript for now return true; } wxString wxNativePrintFactory::CreateStatusLine() { // Only relevant for PostScript for now // We should query "lpstat -r" or "lpstat -p" here return _("Ready"); } wxPrintNativeDataBase *wxNativePrintFactory::CreatePrintNativeData() { #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__) return new wxWindowsPrintNativeData; #elif defined(__WXMAC__) return new wxMacCarbonPrintData; #else return new wxPostScriptPrintNativeData; #endif } //---------------------------------------------------------------------------- // wxPrintNativeDataBase //---------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxPrintNativeDataBase, wxObject) wxPrintNativeDataBase::wxPrintNativeDataBase() { m_ref = 1; } //---------------------------------------------------------------------------- // wxPrintFactoryModule //---------------------------------------------------------------------------- class wxPrintFactoryModule: public wxModule { public: wxPrintFactoryModule() {} bool OnInit() { return true; } void OnExit() { wxPrintFactory::SetPrintFactory( NULL ); } private: DECLARE_DYNAMIC_CLASS(wxPrintFactoryModule) }; IMPLEMENT_DYNAMIC_CLASS(wxPrintFactoryModule, wxModule) //---------------------------------------------------------------------------- // wxPrinterBase //---------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPrinterBase, wxObject) wxPrinterBase::wxPrinterBase(wxPrintDialogData *data) { m_currentPrintout = (wxPrintout *) NULL; sm_abortWindow = (wxWindow *) NULL; sm_abortIt = false; if (data) m_printDialogData = (*data); sm_lastError = wxPRINTER_NO_ERROR; } wxWindow *wxPrinterBase::sm_abortWindow = (wxWindow *) NULL; bool wxPrinterBase::sm_abortIt = false; wxPrinterError wxPrinterBase::sm_lastError = wxPRINTER_NO_ERROR; wxPrinterBase::~wxPrinterBase() { } wxWindow *wxPrinterBase::CreateAbortWindow(wxWindow *parent, wxPrintout * printout) { wxPrintAbortDialog *dialog = new wxPrintAbortDialog(parent, _("Printing ") , wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE); wxBoxSizer *button_sizer = new wxBoxSizer( wxVERTICAL ); button_sizer->Add( new wxStaticText(dialog, wxID_ANY, _("Please wait while printing\n") + printout->GetTitle() ), 0, wxALL, 10 ); button_sizer->Add( new wxButton( dialog, wxID_CANCEL, wxT("Cancel") ), 0, wxALL | wxALIGN_CENTER, 10 ); dialog->SetAutoLayout( true ); dialog->SetSizer( button_sizer ); button_sizer->Fit(dialog); button_sizer->SetSizeHints (dialog) ; return dialog; } void wxPrinterBase::ReportError(wxWindow *parent, wxPrintout *WXUNUSED(printout), const wxString& message) { wxMessageBox(message, _("Printing Error"), wxOK, parent); } wxPrintDialogData& wxPrinterBase::GetPrintDialogData() const { return (wxPrintDialogData&) m_printDialogData; } //---------------------------------------------------------------------------- // wxPrinter //---------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPrinter, wxPrinterBase) wxPrinter::wxPrinter(wxPrintDialogData *data) { m_pimpl = wxPrintFactory::GetFactory()->CreatePrinter( data ); } wxPrinter::~wxPrinter() { delete m_pimpl; } wxWindow *wxPrinter::CreateAbortWindow(wxWindow *parent, wxPrintout *printout) { return m_pimpl->CreateAbortWindow( parent, printout ); } void wxPrinter::ReportError(wxWindow *parent, wxPrintout *printout, const wxString& message) { m_pimpl->ReportError( parent, printout, message ); } bool wxPrinter::Setup(wxWindow *parent) { return m_pimpl->Setup( parent ); } bool wxPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt) { return m_pimpl->Print( parent, printout, prompt ); } wxDC* wxPrinter::PrintDialog(wxWindow *parent) { return m_pimpl->PrintDialog( parent ); } wxPrintDialogData& wxPrinter::GetPrintDialogData() const { return m_pimpl->GetPrintDialogData(); } // --------------------------------------------------------------------------- // wxPrintDialogBase: the dialog for printing. // --------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxPrintDialogBase, wxDialog) wxPrintDialogBase::wxPrintDialogBase(wxWindow *parent, wxWindowID id, const wxString &title, const wxPoint &pos, const wxSize &size, long style) : wxDialog( parent, id, title.empty() ? wxString(_("Print")) : title, pos, size, style ) { } // --------------------------------------------------------------------------- // wxPrintDialog: the dialog for printing // --------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPrintDialog, wxObject) wxPrintDialog::wxPrintDialog(wxWindow *parent, wxPrintDialogData* data) { m_pimpl = wxPrintFactory::GetFactory()->CreatePrintDialog( parent, data ); } wxPrintDialog::wxPrintDialog(wxWindow *parent, wxPrintData* data) { m_pimpl = wxPrintFactory::GetFactory()->CreatePrintDialog( parent, data ); } wxPrintDialog::~wxPrintDialog() { delete m_pimpl; } int wxPrintDialog::ShowModal() { return m_pimpl->ShowModal(); } wxPrintDialogData& wxPrintDialog::GetPrintDialogData() { return m_pimpl->GetPrintDialogData(); } wxPrintData& wxPrintDialog::GetPrintData() { return m_pimpl->GetPrintData(); } wxDC *wxPrintDialog::GetPrintDC() { return m_pimpl->GetPrintDC(); } // --------------------------------------------------------------------------- // wxPageSetupDialogBase: the page setup dialog // --------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxPageSetupDialogBase, wxDialog) wxPageSetupDialogBase::wxPageSetupDialogBase(wxWindow *parent, wxWindowID id, const wxString &title, const wxPoint &pos, const wxSize &size, long style) : wxDialog( parent, id, title.empty() ? wxString(_("Page setup")) : title, pos, size, style ) { } // --------------------------------------------------------------------------- // wxPageSetupDialog: the page setup dialog // --------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPageSetupDialog, wxObject) wxPageSetupDialog::wxPageSetupDialog(wxWindow *parent, wxPageSetupDialogData *data ) { m_pimpl = wxPrintFactory::GetFactory()->CreatePageSetupDialog( parent, data ); } wxPageSetupDialog::~wxPageSetupDialog() { delete m_pimpl; } int wxPageSetupDialog::ShowModal() { return m_pimpl->ShowModal(); } wxPageSetupDialogData& wxPageSetupDialog::GetPageSetupDialogData() { return m_pimpl->GetPageSetupDialogData(); } // old name wxPageSetupDialogData& wxPageSetupDialog::GetPageSetupData() { return m_pimpl->GetPageSetupDialogData(); } //---------------------------------------------------------------------------- // wxPrintAbortDialog //---------------------------------------------------------------------------- BEGIN_EVENT_TABLE(wxPrintAbortDialog, wxDialog) EVT_BUTTON(wxID_CANCEL, wxPrintAbortDialog::OnCancel) END_EVENT_TABLE() void wxPrintAbortDialog::OnCancel(wxCommandEvent& WXUNUSED(event)) { wxPrinterBase::sm_abortIt = true; wxPrinterBase::sm_abortWindow->Show(false); wxPrinterBase::sm_abortWindow->Close(true); wxPrinterBase::sm_abortWindow->Destroy(); wxPrinterBase::sm_abortWindow = (wxWindow *) NULL; } //---------------------------------------------------------------------------- // wxPrintout //---------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxPrintout, wxObject) wxPrintout::wxPrintout(const wxString& title) { m_printoutTitle = title ; m_printoutDC = (wxDC *) NULL; m_pageWidthMM = 0; m_pageHeightMM = 0; m_pageWidthPixels = 0; m_pageHeightPixels = 0; m_PPIScreenX = 0; m_PPIScreenY = 0; m_PPIPrinterX = 0; m_PPIPrinterY = 0; m_isPreview = false; } wxPrintout::~wxPrintout() { } bool wxPrintout::OnBeginDocument(int WXUNUSED(startPage), int WXUNUSED(endPage)) { return GetDC()->StartDoc(_("Printing ") + m_printoutTitle); } void wxPrintout::OnEndDocument() { GetDC()->EndDoc(); } void wxPrintout::OnBeginPrinting() { } void wxPrintout::OnEndPrinting() { } bool wxPrintout::HasPage(int page) { return (page == 1); } void wxPrintout::GetPageInfo(int *minPage, int *maxPage, int *fromPage, int *toPage) { *minPage = 1; *maxPage = 32000; *fromPage = 1; *toPage = 1; } void wxPrintout::FitThisSizeToPaper(const wxSize& imageSize) { // Set the DC scale and origin so that the given image size fits within the // entire page and the origin is at the top left corner of the page. Note // that with most printers, portions of the page will be non-printable. Use // this if you're managing your own page margins. if (!m_printoutDC) return; wxRect paperRect = GetPaperRectPixels(); wxCoord pw, ph; GetPageSizePixels(&pw, &ph); wxCoord w, h; m_printoutDC->GetSize(&w, &h); float scaleX = ((float(paperRect.width) * w) / (float(pw) * imageSize.x)); float scaleY = ((float(paperRect.height) * h) / (float(ph) * imageSize.y)); float actualScale = wxMin(scaleX, scaleY); m_printoutDC->SetUserScale(actualScale, actualScale); m_printoutDC->SetDeviceOrigin(0, 0); wxRect logicalPaperRect = GetLogicalPaperRect(); SetLogicalOrigin(logicalPaperRect.x, logicalPaperRect.y); } void wxPrintout::FitThisSizeToPage(const wxSize& imageSize) { // Set the DC scale and origin so that the given image size fits within the // printable area of the page and the origin is at the top left corner of // the printable area. if (!m_printoutDC) return; int w, h; m_printoutDC->GetSize(&w, &h); float scaleX = float(w) / imageSize.x; float scaleY = float(h) / imageSize.y; float actualScale = wxMin(scaleX, scaleY); m_printoutDC->SetUserScale(actualScale, actualScale); m_printoutDC->SetDeviceOrigin(0, 0); } void wxPrintout::FitThisSizeToPageMargins(const wxSize& imageSize, const wxPageSetupDialogData& pageSetupData) { // Set the DC scale and origin so that the given image size fits within the // page margins defined in the given wxPageSetupDialogData object and the // origin is at the top left corner of the page margins. if (!m_printoutDC) return; wxRect paperRect = GetPaperRectPixels(); wxCoord pw, ph; GetPageSizePixels(&pw, &ph); wxPoint topLeft = pageSetupData.GetMarginTopLeft(); wxPoint bottomRight = pageSetupData.GetMarginBottomRight(); wxCoord mw, mh; GetPageSizeMM(&mw, &mh); float mmToDeviceX = float(pw) / mw; float mmToDeviceY = float(ph) / mh; wxRect pageMarginsRect(paperRect.x + wxRound(mmToDeviceX * topLeft.x), paperRect.y + wxRound(mmToDeviceY * topLeft.y), paperRect.width - wxRound(mmToDeviceX * (topLeft.x + bottomRight.x)), paperRect.height - wxRound(mmToDeviceY * (topLeft.y + bottomRight.y))); wxCoord w, h; m_printoutDC->GetSize(&w, &h); float scaleX = (float(pageMarginsRect.width) * w) / (float(pw) * imageSize.x); float scaleY = (float(pageMarginsRect.height) * h) / (float(ph) * imageSize.y); float actualScale = wxMin(scaleX, scaleY); m_printoutDC->SetUserScale(actualScale, actualScale); m_printoutDC->SetDeviceOrigin(0, 0); wxRect logicalPageMarginsRect = GetLogicalPageMarginsRect(pageSetupData); SetLogicalOrigin(logicalPageMarginsRect.x, logicalPageMarginsRect.y); } void wxPrintout::MapScreenSizeToPaper() { // Set the DC scale so that an image on the screen is the same size on the // paper and the origin is at the top left of the paper. Note that with most // printers, portions of the page will be cut off. Use this if you're // managing your own page margins. if (!m_printoutDC) return; MapScreenSizeToPage(); wxRect logicalPaperRect = GetLogicalPaperRect(); SetLogicalOrigin(logicalPaperRect.x, logicalPaperRect.y); } void wxPrintout::MapScreenSizeToPage() { // Set the DC scale and origin so that an image on the screen is the same // size on the paper and the origin is at the top left of the printable area. if (!m_printoutDC) return; int ppiScreenX, ppiScreenY; GetPPIScreen(&ppiScreenX, &ppiScreenY); int ppiPrinterX, ppiPrinterY; GetPPIPrinter(&ppiPrinterX, &ppiPrinterY); int w, h; m_printoutDC->GetSize(&w, &h); int pageSizePixelsX, pageSizePixelsY; GetPageSizePixels(&pageSizePixelsX, &pageSizePixelsY); float userScaleX = (float(ppiPrinterX) * w) / (float(ppiScreenX) * pageSizePixelsX); float userScaleY = (float(ppiPrinterY) * h) / (float(ppiScreenY) * pageSizePixelsY); m_printoutDC->SetUserScale(userScaleX, userScaleY); m_printoutDC->SetDeviceOrigin(0, 0); } void wxPrintout::MapScreenSizeToPageMargins(const wxPageSetupDialogData& pageSetupData) { // Set the DC scale so that an image on the screen is the same size on the // paper and the origin is at the top left of the page margins defined by // the given wxPageSetupDialogData object. if (!m_printoutDC) return; MapScreenSizeToPage(); wxRect logicalPageMarginsRect = GetLogicalPageMarginsRect(pageSetupData); SetLogicalOrigin(logicalPageMarginsRect.x, logicalPageMarginsRect.y); } void wxPrintout::MapScreenSizeToDevice() { // Set the DC scale so that a screen pixel is the same size as a device // pixel and the origin is at the top left of the printable area. if (!m_printoutDC) return; int w, h; m_printoutDC->GetSize(&w, &h); int pageSizePixelsX, pageSizePixelsY; GetPageSizePixels(&pageSizePixelsX, &pageSizePixelsY); float userScaleX = float(w) / pageSizePixelsX; float userScaleY = float(h) / pageSizePixelsY; m_printoutDC->SetUserScale(userScaleX, userScaleY); m_printoutDC->SetDeviceOrigin(0, 0); } wxRect wxPrintout::GetLogicalPaperRect() const { // Return the rectangle in logical units that corresponds to the paper // rectangle. wxRect paperRect = GetPaperRectPixels(); wxCoord pw, ph; GetPageSizePixels(&pw, &ph); wxCoord w, h; m_printoutDC->GetSize(&w, &h); if (w == pw && h == ph) { // this DC matches the printed page, so no scaling return wxRect(m_printoutDC->DeviceToLogicalX(paperRect.x), m_printoutDC->DeviceToLogicalY(paperRect.y), m_printoutDC->DeviceToLogicalXRel(paperRect.width), m_printoutDC->DeviceToLogicalYRel(paperRect.height)); } // This DC doesn't match the printed page, so we have to scale. float scaleX = float(w) / pw; float scaleY = float(h) / ph; return wxRect(m_printoutDC->DeviceToLogicalX(wxRound(paperRect.x * scaleX)), m_printoutDC->DeviceToLogicalY(wxRound(paperRect.y * scaleY)), m_printoutDC->DeviceToLogicalXRel(wxRound(paperRect.width * scaleX)), m_printoutDC->DeviceToLogicalYRel(wxRound(paperRect.height * scaleY))); } wxRect wxPrintout::GetLogicalPageRect() const { // Return the rectangle in logical units that corresponds to the printable // area. int w, h; m_printoutDC->GetSize(&w, &h); return wxRect(m_printoutDC->DeviceToLogicalX(0), m_printoutDC->DeviceToLogicalY(0), m_printoutDC->DeviceToLogicalXRel(w), m_printoutDC->DeviceToLogicalYRel(h)); } wxRect wxPrintout::GetLogicalPageMarginsRect(const wxPageSetupDialogData& pageSetupData) const { // Return the rectangle in logical units that corresponds to the region // within the page margins as specified by the given wxPageSetupDialogData // object. wxRect paperRect = GetPaperRectPixels(); wxCoord pw, ph; GetPageSizePixels(&pw, &ph); wxPoint topLeft = pageSetupData.GetMarginTopLeft(); wxPoint bottomRight = pageSetupData.GetMarginBottomRight(); wxCoord mw, mh; GetPageSizeMM(&mw, &mh); float mmToDeviceX = float(pw) / mw; float mmToDeviceY = float(ph) / mh; wxRect pageMarginsRect(paperRect.x + wxRound(mmToDeviceX * topLeft.x), paperRect.y + wxRound(mmToDeviceY * topLeft.y), paperRect.width - wxRound(mmToDeviceX * (topLeft.x + bottomRight.x)), paperRect.height - wxRound(mmToDeviceY * (topLeft.y + bottomRight.y))); wxCoord w, h; m_printoutDC->GetSize(&w, &h); if (w == pw && h == ph) { // this DC matches the printed page, so no scaling return wxRect(m_printoutDC->DeviceToLogicalX(pageMarginsRect.x), m_printoutDC->DeviceToLogicalY(pageMarginsRect.y), m_printoutDC->DeviceToLogicalXRel(pageMarginsRect.width), m_printoutDC->DeviceToLogicalYRel(pageMarginsRect.height)); } // This DC doesn't match the printed page, so we have to scale. float scaleX = float(w) / pw; float scaleY = float(h) / ph; return wxRect(m_printoutDC->DeviceToLogicalX(wxRound(pageMarginsRect.x * scaleX)), m_printoutDC->DeviceToLogicalY(wxRound(pageMarginsRect.y * scaleY)), m_printoutDC->DeviceToLogicalXRel(wxRound(pageMarginsRect.width * scaleX)), m_printoutDC->DeviceToLogicalYRel(wxRound(pageMarginsRect.height * scaleY))); } void wxPrintout::SetLogicalOrigin(wxCoord x, wxCoord y) { // Set the device origin by specifying a point in logical coordinates. m_printoutDC->SetDeviceOrigin(m_printoutDC->LogicalToDeviceX(x), m_printoutDC->LogicalToDeviceY(y)); } void wxPrintout::OffsetLogicalOrigin(wxCoord xoff, wxCoord yoff) { // Offset the device origin by a specified distance in device coordinates. wxCoord x = m_printoutDC->LogicalToDeviceX(0); wxCoord y = m_printoutDC->LogicalToDeviceY(0); m_printoutDC->SetDeviceOrigin(x + m_printoutDC->LogicalToDeviceXRel(xoff), y + m_printoutDC->LogicalToDeviceYRel(yoff)); } //---------------------------------------------------------------------------- // wxPreviewCanvas //---------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPreviewCanvas, wxWindow) BEGIN_EVENT_TABLE(wxPreviewCanvas, wxScrolledWindow) EVT_PAINT(wxPreviewCanvas::OnPaint) EVT_CHAR(wxPreviewCanvas::OnChar) EVT_SYS_COLOUR_CHANGED(wxPreviewCanvas::OnSysColourChanged) #if wxUSE_MOUSEWHEEL EVT_MOUSEWHEEL(wxPreviewCanvas::OnMouseWheel) #endif END_EVENT_TABLE() // VZ: the current code doesn't refresh properly without // wxFULL_REPAINT_ON_RESIZE, this must be fixed as otherwise we have // really horrible flicker when resizing the preview frame, but without // this style it simply doesn't work correctly at all... wxPreviewCanvas::wxPreviewCanvas(wxPrintPreviewBase *preview, wxWindow *parent, const wxPoint& pos, const wxSize& size, long style, const wxString& name): wxScrolledWindow(parent, wxID_ANY, pos, size, style | wxFULL_REPAINT_ON_RESIZE, name) { m_printPreview = preview; #ifdef __WXMAC__ // The app workspace colour is always white, but we should have // a contrast with the page. wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW; #elif defined(__WXGTK__) wxSystemColour colourIndex = wxSYS_COLOUR_BTNFACE; #else wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE; #endif SetBackgroundColour(wxSystemSettings::GetColour(colourIndex)); SetScrollbars(10, 10, 100, 100); } wxPreviewCanvas::~wxPreviewCanvas() { } void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) { wxPaintDC dc(this); PrepareDC( dc ); /* #ifdef __WXGTK__ if (!GetUpdateRegion().IsEmpty()) dc.SetClippingRegion( GetUpdateRegion() ); #endif */ if (m_printPreview) { m_printPreview->PaintPage(this, dc); } } // Responds to colour changes, and passes event on to children. void wxPreviewCanvas::OnSysColourChanged(wxSysColourChangedEvent& event) { #ifdef __WXMAC__ // The app workspace colour is always white, but we should have // a contrast with the page. wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW; #elif defined(__WXGTK__) wxSystemColour colourIndex = wxSYS_COLOUR_BTNFACE; #else wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE; #endif SetBackgroundColour(wxSystemSettings::GetColour(colourIndex)); Refresh(); // Propagate the event to the non-top-level children wxWindow::OnSysColourChanged(event); } void wxPreviewCanvas::OnChar(wxKeyEvent &event) { wxPreviewControlBar* controlBar = ((wxPreviewFrame*) GetParent())->GetControlBar(); if (event.GetKeyCode() == WXK_ESCAPE) { ((wxPreviewFrame*) GetParent())->Close(true); return; } else if (event.GetKeyCode() == WXK_TAB) { controlBar->OnGoto(); return; } else if (event.GetKeyCode() == WXK_RETURN) { controlBar->OnPrint(); return; } if (!event.ControlDown()) { event.Skip(); return; } switch(event.GetKeyCode()) { case WXK_PAGEDOWN: controlBar->OnNext(); break; case WXK_PAGEUP: controlBar->OnPrevious(); break; case WXK_HOME: controlBar->OnFirst(); break; case WXK_END: controlBar->OnLast(); break; default: event.Skip(); } } #if wxUSE_MOUSEWHEEL void wxPreviewCanvas::OnMouseWheel(wxMouseEvent& event) { wxPreviewControlBar * controlBar = wxStaticCast(GetParent(), wxPreviewFrame)->GetControlBar(); if ( controlBar ) { if ( event.ControlDown() && event.GetWheelRotation() != 0 ) { int currentZoom = controlBar->GetZoomControl(); int delta; if ( currentZoom < 100 ) delta = 5; else if ( currentZoom <= 120 ) delta = 10; else delta = 50; if ( event.GetWheelRotation() > 0 ) delta = -delta; int newZoom = currentZoom + delta; if ( newZoom < 10 ) newZoom = 10; if ( newZoom > 200 ) newZoom = 200; if ( newZoom != currentZoom ) { controlBar->SetZoomControl(newZoom); m_printPreview->SetZoom(newZoom); Refresh(); } return; } } event.Skip(); } #endif // wxUSE_MOUSEWHEEL //---------------------------------------------------------------------------- // wxPreviewControlBar //---------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPreviewControlBar, wxWindow) BEGIN_EVENT_TABLE(wxPreviewControlBar, wxPanel) EVT_BUTTON(wxID_PREVIEW_CLOSE, wxPreviewControlBar::OnWindowClose) EVT_BUTTON(wxID_PREVIEW_PRINT, wxPreviewControlBar::OnPrintButton) EVT_BUTTON(wxID_PREVIEW_PREVIOUS, wxPreviewControlBar::OnPreviousButton) EVT_BUTTON(wxID_PREVIEW_NEXT, wxPreviewControlBar::OnNextButton) EVT_BUTTON(wxID_PREVIEW_FIRST, wxPreviewControlBar::OnFirstButton) EVT_BUTTON(wxID_PREVIEW_LAST, wxPreviewControlBar::OnLastButton) EVT_BUTTON(wxID_PREVIEW_GOTO, wxPreviewControlBar::OnGotoButton) EVT_CHOICE(wxID_PREVIEW_ZOOM, wxPreviewControlBar::OnZoom) EVT_PAINT(wxPreviewControlBar::OnPaint) END_EVENT_TABLE() wxPreviewControlBar::wxPreviewControlBar(wxPrintPreviewBase *preview, long buttons, wxWindow *parent, const wxPoint& pos, const wxSize& size, long style, const wxString& name): wxPanel(parent, wxID_ANY, pos, size, style, name) { m_printPreview = preview; m_closeButton = (wxButton *) NULL; m_nextPageButton = (wxButton *) NULL; m_previousPageButton = (wxButton *) NULL; m_printButton = (wxButton *) NULL; m_zoomControl = (wxChoice *) NULL; m_buttonFlags = buttons; } wxPreviewControlBar::~wxPreviewControlBar() { } void wxPreviewControlBar::OnPaint(wxPaintEvent& WXUNUSED(event)) { wxPaintDC dc(this); int w, h; GetSize(&w, &h); dc.SetPen(*wxBLACK_PEN); dc.SetBrush(*wxTRANSPARENT_BRUSH); dc.DrawLine( 0, h-1, w, h-1 ); } void wxPreviewControlBar::OnWindowClose(wxCommandEvent& WXUNUSED(event)) { wxPreviewFrame *frame = (wxPreviewFrame *)GetParent(); frame->Close(true); } void wxPreviewControlBar::OnPrint(void) { wxPrintPreviewBase *preview = GetPrintPreview(); preview->Print(true); } void wxPreviewControlBar::OnNext(void) { wxPrintPreviewBase *preview = GetPrintPreview(); if (preview) { int currentPage = preview->GetCurrentPage(); if ((preview->GetMaxPage() > 0) && (currentPage < preview->GetMaxPage()) && preview->GetPrintout()->HasPage(currentPage + 1)) { preview->SetCurrentPage(currentPage + 1); } } } void wxPreviewControlBar::OnPrevious(void) { wxPrintPreviewBase *preview = GetPrintPreview(); if (preview) { int currentPage = preview->GetCurrentPage(); if ((preview->GetMinPage() > 0) && (currentPage > preview->GetMinPage()) && preview->GetPrintout()->HasPage(currentPage - 1)) { preview->SetCurrentPage(currentPage - 1); } } } void wxPreviewControlBar::OnFirst(void) { wxPrintPreviewBase *preview = GetPrintPreview(); if (preview) { int currentPage = preview->GetMinPage(); if (preview->GetPrintout()->HasPage(currentPage)) { preview->SetCurrentPage(currentPage); } } } void wxPreviewControlBar::OnLast(void) { wxPrintPreviewBase *preview = GetPrintPreview(); if (preview) { int currentPage = preview->GetMaxPage(); if (preview->GetPrintout()->HasPage(currentPage)) { preview->SetCurrentPage(currentPage); } } } void wxPreviewControlBar::OnGoto(void) { wxPrintPreviewBase *preview = GetPrintPreview(); if (preview) { long currentPage; if (preview->GetMinPage() > 0) { wxString strPrompt; wxString strPage; strPrompt.Printf( _("Enter a page number between %d and %d:"), preview->GetMinPage(), preview->GetMaxPage()); strPage.Printf( wxT("%d"), preview->GetCurrentPage() ); strPage = wxGetTextFromUser( strPrompt, _("Goto Page"), strPage, GetParent()); if ( strPage.ToLong( ¤tPage ) ) if (preview->GetPrintout()->HasPage(currentPage)) { preview->SetCurrentPage(currentPage); } } } } void wxPreviewControlBar::OnZoom(wxCommandEvent& WXUNUSED(event)) { int zoom = GetZoomControl(); if (GetPrintPreview()) GetPrintPreview()->SetZoom(zoom); } void wxPreviewControlBar::CreateButtons() { SetSize(0, 0, 400, 40); wxBoxSizer *item0 = new wxBoxSizer( wxHORIZONTAL ); m_closeButton = new wxButton( this, wxID_PREVIEW_CLOSE, _("&Close"), wxDefaultPosition, wxDefaultSize, 0 ); item0->Add( m_closeButton, 0, wxALIGN_CENTRE|wxALL, 5 ); if (m_buttonFlags & wxPREVIEW_PRINT) { m_printButton = new wxButton( this, wxID_PREVIEW_PRINT, _("&Print..."), wxDefaultPosition, wxDefaultSize, 0 ); item0->Add( m_printButton, 0, wxALIGN_CENTRE|wxALL, 5 ); } // Exact-fit buttons are too tiny on wxUniversal int navButtonStyle; wxSize navButtonSize; #ifdef __WXUNIVERSAL__ navButtonStyle = 0; navButtonSize = wxSize(40, m_closeButton->GetSize().y); #else navButtonStyle = wxBU_EXACTFIT; navButtonSize = wxDefaultSize; #endif if (m_buttonFlags & wxPREVIEW_FIRST) { m_firstPageButton = new wxButton( this, wxID_PREVIEW_FIRST, _("|<<"), wxDefaultPosition, navButtonSize, navButtonStyle ); item0->Add( m_firstPageButton, 0, wxALIGN_CENTRE|wxALL, 5 ); } if (m_buttonFlags & wxPREVIEW_PREVIOUS) { m_previousPageButton = new wxButton( this, wxID_PREVIEW_PREVIOUS, _("<<"), wxDefaultPosition, navButtonSize, navButtonStyle ); item0->Add( m_previousPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 ); } if (m_buttonFlags & wxPREVIEW_NEXT) { m_nextPageButton = new wxButton( this, wxID_PREVIEW_NEXT, _(">>"), wxDefaultPosition, navButtonSize, navButtonStyle ); item0->Add( m_nextPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 ); } if (m_buttonFlags & wxPREVIEW_LAST) { m_lastPageButton = new wxButton( this, wxID_PREVIEW_LAST, _(">>|"), wxDefaultPosition, navButtonSize, navButtonStyle ); item0->Add( m_lastPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 ); } if (m_buttonFlags & wxPREVIEW_GOTO) { m_gotoPageButton = new wxButton( this, wxID_PREVIEW_GOTO, _("&Goto..."), wxDefaultPosition, wxDefaultSize, 0 ); item0->Add( m_gotoPageButton, 0, wxALIGN_CENTRE|wxALL, 5 ); } if (m_buttonFlags & wxPREVIEW_ZOOM) { wxString choices[] = { wxT("10%"), wxT("15%"), wxT("20%"), wxT("25%"), wxT("30%"), wxT("35%"), wxT("40%"), wxT("45%"), wxT("50%"), wxT("55%"), wxT("60%"), wxT("65%"), wxT("70%"), wxT("75%"), wxT("80%"), wxT("85%"), wxT("90%"), wxT("95%"), wxT("100%"), wxT("110%"), wxT("120%"), wxT("150%"), wxT("200%") }; int n = WXSIZEOF(choices); m_zoomControl = new wxChoice( this, wxID_PREVIEW_ZOOM, wxDefaultPosition, wxSize(70,wxDefaultCoord), n, choices, 0 ); item0->Add( m_zoomControl, 0, wxALIGN_CENTRE|wxALL, 5 ); SetZoomControl(m_printPreview->GetZoom()); } SetSizer(item0); item0->Fit(this); } void wxPreviewControlBar::SetZoomControl(int zoom) { if (m_zoomControl) { int n, count = m_zoomControl->GetCount(); long val; for (n=0; nGetString(n).BeforeFirst(wxT('%')).ToLong(&val) && (val >= long(zoom))) { m_zoomControl->SetSelection(n); return; } } m_zoomControl->SetSelection(count-1); } } int wxPreviewControlBar::GetZoomControl() { if (m_zoomControl && (m_zoomControl->GetStringSelection() != wxEmptyString)) { long val; if (m_zoomControl->GetStringSelection().BeforeFirst(wxT('%')).ToLong(&val)) return int(val); } return 0; } /* * Preview frame */ IMPLEMENT_CLASS(wxPreviewFrame, wxFrame) BEGIN_EVENT_TABLE(wxPreviewFrame, wxFrame) EVT_CLOSE(wxPreviewFrame::OnCloseWindow) END_EVENT_TABLE() wxPreviewFrame::wxPreviewFrame(wxPrintPreviewBase *preview, wxWindow *parent, const wxString& title, const wxPoint& pos, const wxSize& size, long style, const wxString& name): wxFrame(parent, wxID_ANY, title, pos, size, style, name) { m_printPreview = preview; m_controlBar = NULL; m_previewCanvas = NULL; m_windowDisabler = NULL; // Give the application icon #ifdef __WXMSW__ wxFrame* topFrame = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame); if (topFrame) SetIcon(topFrame->GetIcon()); #endif } wxPreviewFrame::~wxPreviewFrame() { } void wxPreviewFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event)) { if (m_windowDisabler) delete m_windowDisabler; // Need to delete the printout and the print preview wxPrintout *printout = m_printPreview->GetPrintout(); if (printout) { delete printout; m_printPreview->SetPrintout(NULL); m_printPreview->SetCanvas(NULL); m_printPreview->SetFrame(NULL); } delete m_printPreview; Destroy(); } void wxPreviewFrame::Initialize() { #if wxUSE_STATUSBAR CreateStatusBar(); #endif CreateCanvas(); CreateControlBar(); m_printPreview->SetCanvas(m_previewCanvas); m_printPreview->SetFrame(this); wxBoxSizer *item0 = new wxBoxSizer( wxVERTICAL ); item0->Add( m_controlBar, 0, wxGROW|wxALIGN_CENTER_VERTICAL, 5 ); item0->Add( m_previewCanvas, 1, wxGROW|wxALIGN_CENTER_VERTICAL, 5 ); SetAutoLayout( true ); SetSizer( item0 ); m_windowDisabler = new wxWindowDisabler(this); Layout(); m_printPreview->AdjustScrollbars(m_previewCanvas); m_previewCanvas->SetFocus(); m_controlBar->SetFocus(); } void wxPreviewFrame::CreateCanvas() { m_previewCanvas = new wxPreviewCanvas(m_printPreview, this); } void wxPreviewFrame::CreateControlBar() { long buttons = wxPREVIEW_DEFAULT; if (m_printPreview->GetPrintoutForPrinting()) buttons |= wxPREVIEW_PRINT; m_controlBar = new wxPreviewControlBar(m_printPreview, buttons, this, wxPoint(0,0), wxSize(400, 40)); m_controlBar->CreateButtons(); } /* * Print preview */ IMPLEMENT_CLASS(wxPrintPreviewBase, wxObject) wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout, wxPrintout *printoutForPrinting, wxPrintData *data) { if (data) m_printDialogData = (*data); Init(printout, printoutForPrinting); } wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout, wxPrintout *printoutForPrinting, wxPrintDialogData *data) { if (data) m_printDialogData = (*data); Init(printout, printoutForPrinting); } void wxPrintPreviewBase::Init(wxPrintout *printout, wxPrintout *printoutForPrinting) { m_isOk = true; m_previewPrintout = printout; if (m_previewPrintout) m_previewPrintout->SetIsPreview(true); m_printPrintout = printoutForPrinting; m_previewCanvas = NULL; m_previewFrame = NULL; m_previewBitmap = NULL; m_currentPage = 1; m_currentZoom = 70; m_topMargin = 40; m_leftMargin = 40; m_pageWidth = 0; m_pageHeight = 0; m_printingPrepared = false; m_minPage = 1; m_maxPage = 1; } wxPrintPreviewBase::~wxPrintPreviewBase() { if (m_previewPrintout) delete m_previewPrintout; if (m_previewBitmap) delete m_previewBitmap; if (m_printPrintout) delete m_printPrintout; } bool wxPrintPreviewBase::SetCurrentPage(int pageNum) { if (m_currentPage == pageNum) return true; m_currentPage = pageNum; if (m_previewBitmap) { delete m_previewBitmap; m_previewBitmap = NULL; } if (m_previewCanvas) { AdjustScrollbars(m_previewCanvas); if (!RenderPage(pageNum)) return false; m_previewCanvas->Refresh(); m_previewCanvas->SetFocus(); } return true; } int wxPrintPreviewBase::GetCurrentPage() const { return m_currentPage; } void wxPrintPreviewBase::SetPrintout(wxPrintout *printout) { m_previewPrintout = printout; } wxPrintout *wxPrintPreviewBase::GetPrintout() const { return m_previewPrintout; } wxPrintout *wxPrintPreviewBase::GetPrintoutForPrinting() const { return m_printPrintout; } void wxPrintPreviewBase::SetFrame(wxFrame *frame) { m_previewFrame = frame; } void wxPrintPreviewBase::SetCanvas(wxPreviewCanvas *canvas) { m_previewCanvas = canvas; } wxFrame *wxPrintPreviewBase::GetFrame() const { return m_previewFrame; } wxPreviewCanvas *wxPrintPreviewBase::GetCanvas() const { return m_previewCanvas; } void wxPrintPreviewBase::CalcRects(wxPreviewCanvas *canvas, wxRect& pageRect, wxRect& paperRect) { // Calculate the rectangles for the printable area of the page and the // entire paper as they appear on the canvas on-screen. int canvasWidth, canvasHeight; canvas->GetSize(&canvasWidth, &canvasHeight); float zoomScale = float(m_currentZoom) / 100; float screenPrintableWidth = zoomScale * m_pageWidth * m_previewScaleX; float screenPrintableHeight = zoomScale * m_pageHeight * m_previewScaleY; wxRect devicePaperRect = m_previewPrintout->GetPaperRectPixels(); wxCoord devicePrintableWidth, devicePrintableHeight; m_previewPrintout->GetPageSizePixels(&devicePrintableWidth, &devicePrintableHeight); float scaleX = screenPrintableWidth / devicePrintableWidth; float scaleY = screenPrintableHeight / devicePrintableHeight; paperRect.width = wxCoord(scaleX * devicePaperRect.width); paperRect.height = wxCoord(scaleY * devicePaperRect.height); paperRect.x = wxCoord((canvasWidth - paperRect.width)/ 2.0); if (paperRect.x < m_leftMargin) paperRect.x = m_leftMargin; paperRect.y = wxCoord((canvasHeight - paperRect.height)/ 2.0); if (paperRect.y < m_topMargin) paperRect.y = m_topMargin; pageRect.x = paperRect.x - wxCoord(scaleX * devicePaperRect.x); pageRect.y = paperRect.y - wxCoord(scaleY * devicePaperRect.y); pageRect.width = wxCoord(screenPrintableWidth); pageRect.height = wxCoord(screenPrintableHeight); } bool wxPrintPreviewBase::PaintPage(wxPreviewCanvas *canvas, wxDC& dc) { DrawBlankPage(canvas, dc); if (!m_previewBitmap) if (!RenderPage(m_currentPage)) return false; if (!m_previewBitmap) return false; if (!canvas) return false; wxRect pageRect, paperRect; CalcRects(canvas, pageRect, paperRect); wxMemoryDC temp_dc; temp_dc.SelectObject(*m_previewBitmap); dc.Blit(pageRect.x, pageRect.y, m_previewBitmap->GetWidth(), m_previewBitmap->GetHeight(), &temp_dc, 0, 0); temp_dc.SelectObject(wxNullBitmap); return true; } // Adjusts the scrollbars for the current scale void wxPrintPreviewBase::AdjustScrollbars(wxPreviewCanvas *canvas) { if (!canvas) return ; wxRect pageRect, paperRect; CalcRects(canvas, pageRect, paperRect); int totalWidth = paperRect.width + 2 * m_leftMargin; int totalHeight = paperRect.height + 2 * m_topMargin; int scrollUnitsX = totalWidth / 10; int scrollUnitsY = totalHeight / 10; wxSize virtualSize = canvas->GetVirtualSize(); if (virtualSize.GetWidth() != totalWidth || virtualSize.GetHeight() != totalHeight) canvas->SetScrollbars(10, 10, scrollUnitsX, scrollUnitsY, 0, 0, true); } bool wxPrintPreviewBase::RenderPageIntoDC(wxDC& dc, int pageNum) { m_previewPrintout->SetDC(&dc); m_previewPrintout->SetPageSizePixels(m_pageWidth, m_pageHeight); // Need to delay OnPreparePrinting() until here, so we have enough // information. if (!m_printingPrepared) { m_previewPrintout->OnPreparePrinting(); int selFrom, selTo; m_previewPrintout->GetPageInfo(&m_minPage, &m_maxPage, &selFrom, &selTo); m_printingPrepared = true; } m_previewPrintout->OnBeginPrinting(); if (!m_previewPrintout->OnBeginDocument(m_printDialogData.GetFromPage(), m_printDialogData.GetToPage())) { wxMessageBox(_("Could not start document preview."), _("Print Preview Failure"), wxOK); return false; } m_previewPrintout->OnPrintPage(pageNum); m_previewPrintout->OnEndDocument(); m_previewPrintout->OnEndPrinting(); m_previewPrintout->SetDC(NULL); return true; } bool wxPrintPreviewBase::RenderPageIntoBitmap(wxBitmap& bmp, int pageNum) { #if wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW // try high quality rendering first: static bool s_hqPreviewFailed = false; if ( !s_hqPreviewFailed ) { wxPrinterDC printerDC(m_printDialogData.GetPrintData()); if ( RenderPageIntoBitmapHQ(this, &wxPrintPreviewBase::RenderPageIntoDC, printerDC, bmp, pageNum, m_pageWidth, m_pageHeight) ) { return true; } else { wxLogTrace(_T("printing"), _T("high-quality preview failed, falling back to normal")); s_hqPreviewFailed = true; // don't bother re-trying } } #endif // wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW wxMemoryDC memoryDC; memoryDC.SelectObject(bmp); memoryDC.Clear(); return RenderPageIntoDC(memoryDC, pageNum); } bool wxPrintPreviewBase::RenderPage(int pageNum) { wxBusyCursor busy; if (!m_previewCanvas) { wxFAIL_MSG(_T("wxPrintPreviewBase::RenderPage: must use wxPrintPreviewBase::SetCanvas to let me know about the canvas!")); return false; } wxRect pageRect, paperRect; CalcRects(m_previewCanvas, pageRect, paperRect); if (!m_previewBitmap) { m_previewBitmap = new wxBitmap(pageRect.width, pageRect.height); if (!m_previewBitmap || !m_previewBitmap->Ok()) { if (m_previewBitmap) { delete m_previewBitmap; m_previewBitmap = NULL; } wxMessageBox(_("Sorry, not enough memory to create a preview."), _("Print Preview Failure"), wxOK); return false; } } if ( !RenderPageIntoBitmap(*m_previewBitmap, pageNum) ) { wxMessageBox(_("Could not start document preview."), _("Print Preview Failure"), wxOK); delete m_previewBitmap; m_previewBitmap = NULL; return false; } #if wxUSE_STATUSBAR wxString status; if (m_maxPage != 0) status = wxString::Format(_("Page %d of %d"), pageNum, m_maxPage); else status = wxString::Format(_("Page %d"), pageNum); if (m_previewFrame) m_previewFrame->SetStatusText(status); #endif return true; } bool wxPrintPreviewBase::DrawBlankPage(wxPreviewCanvas *canvas, wxDC& dc) { wxRect pageRect, paperRect; CalcRects(canvas, pageRect, paperRect); // Draw shadow, allowing for 1-pixel border AROUND the actual paper wxCoord shadowOffset = 4; dc.SetPen(*wxBLACK_PEN); dc.SetBrush(*wxBLACK_BRUSH); dc.DrawRectangle(paperRect.x + shadowOffset, paperRect.y + paperRect.height + 1, paperRect.width, shadowOffset); dc.DrawRectangle(paperRect.x + paperRect.width, paperRect.y + shadowOffset, shadowOffset, paperRect.height); // Draw blank page allowing for 1-pixel border AROUND the actual paper dc.SetPen(*wxBLACK_PEN); dc.SetBrush(*wxWHITE_BRUSH); dc.DrawRectangle(paperRect.x - 2, paperRect.y - 1, paperRect.width + 3, paperRect.height + 2); return true; } void wxPrintPreviewBase::SetZoom(int percent) { if (m_currentZoom == percent) return; m_currentZoom = percent; if (m_previewBitmap) { delete m_previewBitmap; m_previewBitmap = NULL; } if (m_previewCanvas) { AdjustScrollbars(m_previewCanvas); RenderPage(m_currentPage); ((wxScrolledWindow *) m_previewCanvas)->Scroll(0, 0); m_previewCanvas->ClearBackground(); m_previewCanvas->Refresh(); m_previewCanvas->SetFocus(); } } wxPrintDialogData& wxPrintPreviewBase::GetPrintDialogData() { return m_printDialogData; } int wxPrintPreviewBase::GetZoom() const { return m_currentZoom; } int wxPrintPreviewBase::GetMaxPage() const { return m_maxPage; } int wxPrintPreviewBase::GetMinPage() const { return m_minPage; } bool wxPrintPreviewBase::IsOk() const { return m_isOk; } void wxPrintPreviewBase::SetOk(bool ok) { m_isOk = ok; } //---------------------------------------------------------------------------- // wxPrintPreview //---------------------------------------------------------------------------- IMPLEMENT_CLASS(wxPrintPreview, wxPrintPreviewBase) wxPrintPreview::wxPrintPreview(wxPrintout *printout, wxPrintout *printoutForPrinting, wxPrintDialogData *data) : wxPrintPreviewBase( printout, printoutForPrinting, data ) { m_pimpl = wxPrintFactory::GetFactory()-> CreatePrintPreview( printout, printoutForPrinting, data ); } wxPrintPreview::wxPrintPreview(wxPrintout *printout, wxPrintout *printoutForPrinting, wxPrintData *data ) : wxPrintPreviewBase( printout, printoutForPrinting, data ) { m_pimpl = wxPrintFactory::GetFactory()-> CreatePrintPreview( printout, printoutForPrinting, data ); } wxPrintPreview::~wxPrintPreview() { delete m_pimpl; // don't delete twice m_printPrintout = NULL; m_previewPrintout = NULL; m_previewBitmap = NULL; } bool wxPrintPreview::SetCurrentPage(int pageNum) { return m_pimpl->SetCurrentPage( pageNum ); } int wxPrintPreview::GetCurrentPage() const { return m_pimpl->GetCurrentPage(); } void wxPrintPreview::SetPrintout(wxPrintout *printout) { m_pimpl->SetPrintout( printout ); } wxPrintout *wxPrintPreview::GetPrintout() const { return m_pimpl->GetPrintout(); } wxPrintout *wxPrintPreview::GetPrintoutForPrinting() const { return m_pimpl->GetPrintoutForPrinting(); } void wxPrintPreview::SetFrame(wxFrame *frame) { m_pimpl->SetFrame( frame ); } void wxPrintPreview::SetCanvas(wxPreviewCanvas *canvas) { m_pimpl->SetCanvas( canvas ); } wxFrame *wxPrintPreview::GetFrame() const { return m_pimpl->GetFrame(); } wxPreviewCanvas *wxPrintPreview::GetCanvas() const { return m_pimpl->GetCanvas(); } bool wxPrintPreview::PaintPage(wxPreviewCanvas *canvas, wxDC& dc) { return m_pimpl->PaintPage( canvas, dc ); } bool wxPrintPreview::DrawBlankPage(wxPreviewCanvas *canvas, wxDC& dc) { return m_pimpl->DrawBlankPage( canvas, dc ); } void wxPrintPreview::AdjustScrollbars(wxPreviewCanvas *canvas) { m_pimpl->AdjustScrollbars( canvas ); } bool wxPrintPreview::RenderPage(int pageNum) { return m_pimpl->RenderPage( pageNum ); } void wxPrintPreview::SetZoom(int percent) { m_pimpl->SetZoom( percent ); } int wxPrintPreview::GetZoom() const { return m_pimpl->GetZoom(); } wxPrintDialogData& wxPrintPreview::GetPrintDialogData() { return m_pimpl->GetPrintDialogData(); } int wxPrintPreview::GetMaxPage() const { return m_pimpl->GetMaxPage(); } int wxPrintPreview::GetMinPage() const { return m_pimpl->GetMinPage(); } bool wxPrintPreview::IsOk() const { return m_pimpl->Ok(); } void wxPrintPreview::SetOk(bool ok) { m_pimpl->SetOk( ok ); } bool wxPrintPreview::Print(bool interactive) { return m_pimpl->Print( interactive ); } void wxPrintPreview::DetermineScaling() { m_pimpl->DetermineScaling(); } //---------------------------------------------------------------------------- // experimental backport of high-quality preview on Windows //---------------------------------------------------------------------------- #if wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW // The preview, as implemented in wxPrintPreviewBase (and as used prior to wx3) // is inexact: it uses screen DC, which has much lower resolution and has // other properties different from printer DC, so the preview is not quite // right. // // To make matters worse, if the application depends heavily on GetTextExtent() // or does text layout itself, the output in preview and on paper can be very // different. In particular, wxHtmlEasyPrinting is affected and the preview // can be easily off by several pages. // // To fix this, we attempt to render the preview into high-resolution bitmap // using DC with same resolution etc. as the printer DC. This takes lot of // memory, so the code is more complicated than it could be, but the results // are much better. // // Finally, this code is specific to wxMSW, because it doesn't make sense to // bother with it on other platforms. Both OSX and modern GNOME/GTK+ // environments have builtin accurate preview (that applications should use // instead) and the differences between screen and printer DC in wxGTK are so // large than this trick doesn't help at all. namespace { // If there's not enough memory, we need to render the preview in parts. // Unfortunately we cannot simply use wxMemoryDC, because it reports its size // as bitmap's size, and we need to use smaller bitmap while still reporting // original ("correct") DC size, because printing code frequently uses // GetSize() to determine scaling factor. This DC class handles this. class PageFragmentDC : public wxMemoryDC { public: PageFragmentDC(wxDC *printer, wxBitmap& bmp, const wxPoint& offset, const wxSize& fullSize) : wxMemoryDC(printer), m_offset(offset), m_fullSize(fullSize) { SetDeviceOrigin(0, 0); SelectObject(bmp); } virtual void SetDeviceOrigin(wxCoord x, wxCoord y) { wxMemoryDC::SetDeviceOrigin(x - m_offset.x, y - m_offset.y); } virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const { wxMemoryDC::DoGetDeviceOrigin(x, y); if ( x ) *x += m_offset.x; if ( x ) *y += m_offset.y; } virtual void DoGetSize(int *width, int *height) const { if ( width ) *width = m_fullSize.x; if ( height ) *height = m_fullSize.y; } private: wxPoint m_offset; wxSize m_fullSize; }; // estimate how big chunks we can render, given available RAM long ComputeFragmentSize(long printerDepth, long width, long height) { // Compute the amount of memory needed to generate the preview. // Memory requirements of RenderPageFragment() are as follows: // // (memory DC - always) // width * height * printerDepth/8 // (wxImage + wxDIB instance) // width * height * (3 + 4) // (this could be reduced to *3 if using wxGraphicsContext) // // So, given amount of memory M, we can render at most // // height = M / (width * (printerDepth/8 + F)) // // where F is 3 or 7 depending on whether wxGraphicsContext is used or not wxMemorySize memAvail = wxGetFreeMemory(); if ( memAvail == -1 ) { // we don't know; 10meg shouldn't be a problem hopefully memAvail = 10000000; } else { // limit ourselves to half of available RAM to have a margin for other // apps, for our rendering code, and for miscalculations memAvail /= 2; } const float perPixel = float(printerDepth)/8 + (3 + 4); const long perLine = long(width * perPixel); const long maxstep = (memAvail / perLine).GetValue(); const long step = wxMin(height, maxstep); wxLogTrace(_T("printing"), _T("using %liMB of RAM (%li lines) for preview, %li %lipx fragments"), long((memAvail >> 20).GetValue()), maxstep, (height+step-1) / step, step); return step; } } // anonymous namespace static bool RenderPageFragment(wxPrintPreviewBase *preview, RenderPageIntoDCFunc RenderPageIntoDC, float scaleX, float scaleY, int *nextFinalLine, wxPrinterDC& printer, wxMemoryDC& finalDC, const wxRect& rect, int pageWidth, int pageHeight, int pageNum) { // compute 'rect' equivalent in the small final bitmap: const wxRect smallRect(wxPoint(0, *nextFinalLine), wxPoint(int(rect.GetRight() * scaleX), int(rect.GetBottom() * scaleY))); wxLogTrace(_T("printing"), _T("rendering fragment of page %i: [%i,%i,%i,%i] scaled down to [%i,%i,%i,%i]"), pageNum, rect.x, rect.y, rect.GetRight(), rect.GetBottom(), smallRect.x, smallRect.y, smallRect.GetRight(), smallRect.GetBottom() ); // create DC and bitmap compatible with printer DC: wxBitmap large(rect.width, rect.height, printer); if ( !large.IsOk() ) return false; // render part of the page into it: { PageFragmentDC memoryDC(&printer, large, rect.GetPosition(), wxSize(pageWidth, pageHeight)); if ( !memoryDC.IsOk() ) return false; memoryDC.Clear(); if ( !(preview->*RenderPageIntoDC)(memoryDC, pageNum) ) return false; } // release bitmap from memoryDC // now scale the rendered part down and blit it into final output: wxImage img; { wxDIB dib(large); if ( !dib.IsOk() ) return false; large = wxNullBitmap; // free memory a.s.a.p. img = dib.ConvertToImage(); } // free the DIB now that it's no longer needed, too if ( !img.IsOk() ) return false; img.Rescale(smallRect.width, smallRect.height, wxIMAGE_QUALITY_HIGH); if ( !img.IsOk() ) return false; wxBitmap bmp(img); if ( !bmp.IsOk() ) return false; img = wxNullImage; finalDC.DrawBitmap(bmp, smallRect.x, smallRect.y); if ( bmp.IsOk() ) { *nextFinalLine += smallRect.height; return true; } return false; } static bool RenderPageIntoBitmapHQ(wxPrintPreviewBase *preview, RenderPageIntoDCFunc RenderPageIntoDC, wxPrinterDC& printerDC, wxBitmap& bmp, int pageNum, int pageWidth, int pageHeight) { wxLogTrace(_T("printing"), _T("rendering HQ preview of page %i"), pageNum); if ( !printerDC.IsOk() ) return false; // compute scale factor const float scaleX = float(bmp.GetWidth()) / float(pageWidth); const float scaleY = float(bmp.GetHeight()) / float(pageHeight); wxMemoryDC bmpDC; bmpDC.SelectObject(bmp); bmpDC.Clear(); const int initialStep = ComputeFragmentSize(printerDC.GetDepth(), pageWidth, pageHeight); wxRect todo(0, 0, pageWidth, initialStep); // rect to render int nextFinalLine = 0; // first not-yet-rendered output line while ( todo.y < pageHeight ) { todo.SetBottom(wxMin(todo.GetBottom(), pageHeight - 1)); if ( !RenderPageFragment(preview, RenderPageIntoDC, scaleX, scaleY, &nextFinalLine, printerDC, bmpDC, todo, pageWidth, pageHeight, pageNum) ) { if ( todo.height < 20 ) { // something is very wrong if we can't render even at this // slow space, let's bail out and fall back to low quality // preview wxLogTrace(_T("printing"), _T("it seems that HQ preview doesn't work at all")); return false; } // it's possible our memory calculation was off, or conditions // changed, or there's not enough _bitmap_ resources; try if using // smaller bitmap would help: todo.height /= 2; wxLogTrace(_T("printing"), _T("preview of fragment failed, reducing height to %ipx"), todo.height); continue; // retry at the same position again } // move to the next segment todo.Offset(0, todo.height); } return true; } #endif // wxUSE_HIGH_QUALITY_PREVIEW_IN_WXMSW #endif // wxUSE_PRINTING_ARCHITECTURE