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fa99eaeaed412d9cec106e80f93553293e391124
wxWidgets/src/common/prntbase.cpp
Robin Dunn 7bd0064852 destroy the abort dialog when done with it 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@58209 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2009-01-18 21:31:36 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/common/prntbase.cpp
// Purpose: Printing framework base class implementation
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// 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 <stdlib.h>
#include <string.h>
#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 <print.h>
#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( &currentPage ) )
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; n<count; n++)
{
if (m_zoomControl->GetString(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
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