src/common/prntbase.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/prntbase.cpp
   3 // Purpose:     Printing framework base class implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_PRINTING_ARCHITECTURE
  20
  21 #include "wx/dcprint.h"
  22
  23 #ifndef WX_PRECOMP
  24     #if defined(__WXMSW__)
  25         #include "wx/msw/wrapcdlg.h"
  26     #endif // MSW
  27     #include "wx/utils.h"
  28     #include "wx/dc.h"
  29     #include "wx/app.h"
  30     #include "wx/math.h"
  31     #include "wx/msgdlg.h"
  32     #include "wx/layout.h"
  33     #include "wx/choice.h"
  34     #include "wx/button.h"
  35     #include "wx/bmpbuttn.h"
  36     #include "wx/settings.h"
  37     #include "wx/dcmemory.h"
  38     #include "wx/dcclient.h"
  39     #include "wx/stattext.h"
  40     #include "wx/intl.h"
  41     #include "wx/textdlg.h"
  42     #include "wx/sizer.h"
  43     #include "wx/module.h"
  44 #endif // !WX_PRECOMP
  45
  46 #include "wx/prntbase.h"
  47 #include "wx/printdlg.h"
  48 #include "wx/print.h"
  49 #include "wx/dcprint.h"
  50 #include "wx/artprov.h"
  51
  52 #include <stdlib.h>
  53 #include <string.h>
  54
  55 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
  56 #include "wx/msw/printdlg.h"
  57 #include "wx/msw/dcprint.h"
  58 #elif defined(__WXMAC__)
  59 #include "wx/osx/printdlg.h"
  60 #include "wx/osx/private/print.h"
  61 #include "wx/osx/dcprint.h"
  62 #elif defined(__WXPM__)
  63 #include "wx/os2/dcprint.h"
  64 #include "wx/generic/prntdlgg.h"
  65 #else
  66 #include "wx/generic/prntdlgg.h"
  67 #include "wx/dcps.h"
  68 #endif
  69
  70 #ifdef __WXMSW__
  71     #ifndef __WIN32__
  72         #include <print.h>
  73     #endif
  74 #endif // __WXMSW__
  75
  76 //----------------------------------------------------------------------------
  77 // wxPrintFactory
  78 //----------------------------------------------------------------------------
  79
  80 wxPrintFactory *wxPrintFactory::m_factory = NULL;
  81
  82 void wxPrintFactory::SetPrintFactory( wxPrintFactory *factory )
  83 {
  84     if (wxPrintFactory::m_factory)
  85         delete wxPrintFactory::m_factory;
  86
  87     wxPrintFactory::m_factory = factory;
  88 }
  89
  90 wxPrintFactory *wxPrintFactory::GetFactory()
  91 {
  92     if (!wxPrintFactory::m_factory)
  93         wxPrintFactory::m_factory = new wxNativePrintFactory;
  94
  95     return wxPrintFactory::m_factory;
  96 }
  97
  98 //----------------------------------------------------------------------------
  99 // wxNativePrintFactory
 100 //----------------------------------------------------------------------------
 101
 102 wxPrinterBase *wxNativePrintFactory::CreatePrinter( wxPrintDialogData *data )
 103 {
 104 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 105     return new wxWindowsPrinter( data );
 106 #elif defined(__WXMAC__)
 107     return new wxMacPrinter( data );
 108 #elif defined(__WXPM__)
 109     return new wxOS2Printer( data );
 110 #else
 111     return new wxPostScriptPrinter( data );
 112 #endif
 113 }
 114
 115 wxPrintPreviewBase *wxNativePrintFactory::CreatePrintPreview( wxPrintout *preview,
 116     wxPrintout *printout, wxPrintDialogData *data )
 117 {
 118 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 119     return new wxWindowsPrintPreview( preview, printout, data );
 120 #elif defined(__WXMAC__)
 121     return new wxMacPrintPreview( preview, printout, data );
 122 #elif defined(__WXPM__)
 123     return new wxOS2PrintPreview( preview, printout, data );
 124 #else
 125     return new wxPostScriptPrintPreview( preview, printout, data );
 126 #endif
 127 }
 128
 129 wxPrintPreviewBase *wxNativePrintFactory::CreatePrintPreview( wxPrintout *preview,
 130     wxPrintout *printout, wxPrintData *data )
 131 {
 132 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 133     return new wxWindowsPrintPreview( preview, printout, data );
 134 #elif defined(__WXMAC__)
 135     return new wxMacPrintPreview( preview, printout, data );
 136 #elif defined(__WXPM__)
 137     return new wxOS2PrintPreview( preview, printout, data );
 138 #else
 139     return new wxPostScriptPrintPreview( preview, printout, data );
 140 #endif
 141 }
 142
 143 wxPrintDialogBase *wxNativePrintFactory::CreatePrintDialog( wxWindow *parent,
 144                                                   wxPrintDialogData *data )
 145 {
 146 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 147     return new wxWindowsPrintDialog( parent, data );
 148 #elif defined(__WXMAC__)
 149     return new wxMacPrintDialog( parent, data );
 150 #else
 151     return new wxGenericPrintDialog( parent, data );
 152 #endif
 153 }
 154
 155 wxPrintDialogBase *wxNativePrintFactory::CreatePrintDialog( wxWindow *parent,
 156                                                   wxPrintData *data )
 157 {
 158 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 159     return new wxWindowsPrintDialog( parent, data );
 160 #elif defined(__WXMAC__)
 161     return new wxMacPrintDialog( parent, data );
 162 #else
 163     return new wxGenericPrintDialog( parent, data );
 164 #endif
 165 }
 166
 167 wxPageSetupDialogBase *wxNativePrintFactory::CreatePageSetupDialog( wxWindow *parent,
 168                                                   wxPageSetupDialogData *data )
 169 {
 170 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 171     return new wxWindowsPageSetupDialog( parent, data );
 172 #elif defined(__WXMAC__)
 173     return new wxMacPageSetupDialog( parent, data );
 174 #else
 175     return new wxGenericPageSetupDialog( parent, data );
 176 #endif
 177 }
 178
 179 bool wxNativePrintFactory::HasPrintSetupDialog()
 180 {
 181 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 182     return false;
 183 #elif defined(__WXMAC__)
 184     return false;
 185 #else
 186     // Only here do we need to provide the print setup
 187     // dialog ourselves, the other platforms either have
 188     // none, don't make it accessible or let you configure
 189     // the printer from the wxPrintDialog anyway.
 190     return true;
 191 #endif
 192
 193 }
 194
 195 wxDialog *wxNativePrintFactory::CreatePrintSetupDialog( wxWindow *parent,
 196                                                         wxPrintData *data )
 197 {
 198 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 199     wxUnusedVar(parent);
 200     wxUnusedVar(data);
 201     return NULL;
 202 #elif defined(__WXMAC__)
 203     wxUnusedVar(parent);
 204     wxUnusedVar(data);
 205     return NULL;
 206 #else
 207     // Only here do we need to provide the print setup
 208     // dialog ourselves, the other platforms either have
 209     // none, don't make it accessible or let you configure
 210     // the printer from the wxPrintDialog anyway.
 211     return new wxGenericPrintSetupDialog( parent, data );
 212 #endif
 213 }
 214
 215 wxDCImpl* wxNativePrintFactory::CreatePrinterDCImpl( wxPrinterDC *owner, const wxPrintData& data )
 216 {
 217 #if defined(__WXGTK__) || defined(__WXMOTIF__) || ( defined(__WXUNIVERSAL__) && !defined(__WXMAC__) )
 218     return new wxPostScriptDCImpl( owner, data );
 219 #else
 220     return new wxPrinterDCImpl( owner, data );
 221 #endif
 222 }
 223
 224 bool wxNativePrintFactory::HasOwnPrintToFile()
 225 {
 226     // Only relevant for PostScript and here the
 227     // setup dialog provides no "print to file"
 228     // option. In the GNOME setup dialog, the
 229     // setup dialog has its own print to file.
 230     return false;
 231 }
 232
 233 bool wxNativePrintFactory::HasPrinterLine()
 234 {
 235     // Only relevant for PostScript for now
 236     return true;
 237 }
 238
 239 wxString wxNativePrintFactory::CreatePrinterLine()
 240 {
 241     // Only relevant for PostScript for now
 242
 243     // We should query "lpstat -d" here
 244     return _("Generic PostScript");
 245 }
 246
 247 bool wxNativePrintFactory::HasStatusLine()
 248 {
 249     // Only relevant for PostScript for now
 250     return true;
 251 }
 252
 253 wxString wxNativePrintFactory::CreateStatusLine()
 254 {
 255     // Only relevant for PostScript for now
 256
 257     // We should query "lpstat -r" or "lpstat -p" here
 258     return _("Ready");
 259 }
 260
 261 wxPrintNativeDataBase *wxNativePrintFactory::CreatePrintNativeData()
 262 {
 263 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 264     return new wxWindowsPrintNativeData;
 265 #elif defined(__WXMAC__)
 266     return wxOSXCreatePrintData();
 267 #else
 268     return new wxPostScriptPrintNativeData;
 269 #endif
 270 }
 271
 272 //----------------------------------------------------------------------------
 273 // wxPrintNativeDataBase
 274 //----------------------------------------------------------------------------
 275
 276 IMPLEMENT_ABSTRACT_CLASS(wxPrintNativeDataBase, wxObject)
 277
 278 wxPrintNativeDataBase::wxPrintNativeDataBase()
 279 {
 280     m_ref = 1;
 281 }
 282
 283 //----------------------------------------------------------------------------
 284 // wxPrintFactoryModule
 285 //----------------------------------------------------------------------------
 286
 287 class wxPrintFactoryModule: public wxModule
 288 {
 289 public:
 290     wxPrintFactoryModule() {}
 291     bool OnInit() { return true; }
 292     void OnExit() { wxPrintFactory::SetPrintFactory( NULL ); }
 293
 294 private:
 295     DECLARE_DYNAMIC_CLASS(wxPrintFactoryModule)
 296 };
 297
 298 IMPLEMENT_DYNAMIC_CLASS(wxPrintFactoryModule, wxModule)
 299
 300 //----------------------------------------------------------------------------
 301 // wxPrinterBase
 302 //----------------------------------------------------------------------------
 303
 304 IMPLEMENT_CLASS(wxPrinterBase, wxObject)
 305
 306 wxPrinterBase::wxPrinterBase(wxPrintDialogData *data)
 307 {
 308     m_currentPrintout = NULL;
 309     sm_abortWindow = NULL;
 310     sm_abortIt = false;
 311     if (data)
 312         m_printDialogData = (*data);
 313     sm_lastError = wxPRINTER_NO_ERROR;
 314 }
 315
 316 wxWindow *wxPrinterBase::sm_abortWindow = NULL;
 317 bool wxPrinterBase::sm_abortIt = false;
 318 wxPrinterError wxPrinterBase::sm_lastError = wxPRINTER_NO_ERROR;
 319
 320 wxPrinterBase::~wxPrinterBase()
 321 {
 322 }
 323
 324 wxPrintAbortDialog *wxPrinterBase::CreateAbortWindow(wxWindow *parent, wxPrintout * printout)
 325 {
 326     return new wxPrintAbortDialog(parent, printout->GetTitle());
 327 }
 328
 329 void wxPrinterBase::ReportError(wxWindow *parent, wxPrintout *WXUNUSED(printout), const wxString& message)
 330 {
 331     wxMessageBox(message, _("Printing Error"), wxOK, parent);
 332 }
 333
 334 wxPrintDialogData& wxPrinterBase::GetPrintDialogData() const
 335 {
 336     return (wxPrintDialogData&) m_printDialogData;
 337 }
 338
 339 //----------------------------------------------------------------------------
 340 // wxPrinter
 341 //----------------------------------------------------------------------------
 342
 343 IMPLEMENT_CLASS(wxPrinter, wxPrinterBase)
 344
 345 wxPrinter::wxPrinter(wxPrintDialogData *data)
 346 {
 347     m_pimpl = wxPrintFactory::GetFactory()->CreatePrinter( data );
 348 }
 349
 350 wxPrinter::~wxPrinter()
 351 {
 352     delete m_pimpl;
 353 }
 354
 355 wxPrintAbortDialog *wxPrinter::CreateAbortWindow(wxWindow *parent, wxPrintout *printout)
 356 {
 357     return m_pimpl->CreateAbortWindow( parent, printout );
 358 }
 359
 360 void wxPrinter::ReportError(wxWindow *parent, wxPrintout *printout, const wxString& message)
 361 {
 362     m_pimpl->ReportError( parent, printout, message );
 363 }
 364
 365 bool wxPrinter::Setup(wxWindow *parent)
 366 {
 367     return m_pimpl->Setup( parent );
 368 }
 369
 370 bool wxPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt)
 371 {
 372     if ( !prompt && m_printDialogData.GetToPage() == 0 )
 373     {
 374         // If the dialog is not shown, set the pages range to print everything
 375         // by default (as otherwise we wouldn't print anything at all which is
 376         // certainly not a reasonable default behaviour).
 377         int minPage, maxPage, selFrom, selTo;
 378         printout->GetPageInfo(&minPage, &maxPage, &selFrom, &selTo);
 379
 380         wxPrintDialogData& pdd = m_pimpl->GetPrintDialogData();
 381         pdd.SetFromPage(minPage);
 382         pdd.SetToPage(maxPage);
 383     }
 384
 385     return m_pimpl->Print( parent, printout, prompt );
 386 }
 387
 388 wxDC* wxPrinter::PrintDialog(wxWindow *parent)
 389 {
 390     return m_pimpl->PrintDialog( parent );
 391 }
 392
 393 wxPrintDialogData& wxPrinter::GetPrintDialogData() const
 394 {
 395     return m_pimpl->GetPrintDialogData();
 396 }
 397
 398 // ---------------------------------------------------------------------------
 399 // wxPrintDialogBase: the dialog for printing.
 400 // ---------------------------------------------------------------------------
 401
 402 IMPLEMENT_ABSTRACT_CLASS(wxPrintDialogBase, wxDialog)
 403
 404 wxPrintDialogBase::wxPrintDialogBase(wxWindow *parent,
 405                                      wxWindowID id,
 406                                      const wxString &title,
 407                                      const wxPoint &pos,
 408                                      const wxSize &size,
 409                                      long style)
 410     : wxDialog( parent, id, title.empty() ? wxString(_("Print")) : title,
 411                 pos, size, style )
 412 {
 413 }
 414
 415 // ---------------------------------------------------------------------------
 416 // wxPrintDialog: the dialog for printing
 417 // ---------------------------------------------------------------------------
 418
 419 IMPLEMENT_CLASS(wxPrintDialog, wxObject)
 420
 421 wxPrintDialog::wxPrintDialog(wxWindow *parent, wxPrintDialogData* data)
 422 {
 423     m_pimpl = wxPrintFactory::GetFactory()->CreatePrintDialog( parent, data );
 424 }
 425
 426 wxPrintDialog::wxPrintDialog(wxWindow *parent, wxPrintData* data)
 427 {
 428     m_pimpl = wxPrintFactory::GetFactory()->CreatePrintDialog( parent, data );
 429 }
 430
 431 wxPrintDialog::~wxPrintDialog()
 432 {
 433     delete m_pimpl;
 434 }
 435
 436 int wxPrintDialog::ShowModal()
 437 {
 438     return m_pimpl->ShowModal();
 439 }
 440
 441 wxPrintDialogData& wxPrintDialog::GetPrintDialogData()
 442 {
 443     return m_pimpl->GetPrintDialogData();
 444 }
 445
 446 wxPrintData& wxPrintDialog::GetPrintData()
 447 {
 448     return m_pimpl->GetPrintData();
 449 }
 450
 451 wxDC *wxPrintDialog::GetPrintDC()
 452 {
 453     return m_pimpl->GetPrintDC();
 454 }
 455
 456 // ---------------------------------------------------------------------------
 457 // wxPageSetupDialogBase: the page setup dialog
 458 // ---------------------------------------------------------------------------
 459
 460 IMPLEMENT_ABSTRACT_CLASS(wxPageSetupDialogBase, wxDialog)
 461
 462 wxPageSetupDialogBase::wxPageSetupDialogBase(wxWindow *parent,
 463                                      wxWindowID id,
 464                                      const wxString &title,
 465                                      const wxPoint &pos,
 466                                      const wxSize &size,
 467                                      long style)
 468     : wxDialog( parent, id, title.empty() ? wxString(_("Page setup")) : title,
 469                 pos, size, style )
 470 {
 471 }
 472
 473 // ---------------------------------------------------------------------------
 474 // wxPageSetupDialog: the page setup dialog
 475 // ---------------------------------------------------------------------------
 476
 477 IMPLEMENT_CLASS(wxPageSetupDialog, wxObject)
 478
 479 wxPageSetupDialog::wxPageSetupDialog(wxWindow *parent, wxPageSetupDialogData *data )
 480 {
 481     m_pimpl = wxPrintFactory::GetFactory()->CreatePageSetupDialog( parent, data );
 482 }
 483
 484 wxPageSetupDialog::~wxPageSetupDialog()
 485 {
 486     delete m_pimpl;
 487 }
 488
 489 int wxPageSetupDialog::ShowModal()
 490 {
 491     return m_pimpl->ShowModal();
 492 }
 493
 494 wxPageSetupDialogData& wxPageSetupDialog::GetPageSetupDialogData()
 495 {
 496     return m_pimpl->GetPageSetupDialogData();
 497 }
 498
 499 // old name
 500 wxPageSetupDialogData& wxPageSetupDialog::GetPageSetupData()
 501 {
 502     return m_pimpl->GetPageSetupDialogData();
 503 }
 504
 505 //----------------------------------------------------------------------------
 506 // wxPrintAbortDialog
 507 //----------------------------------------------------------------------------
 508
 509 BEGIN_EVENT_TABLE(wxPrintAbortDialog, wxDialog)
 510     EVT_BUTTON(wxID_CANCEL, wxPrintAbortDialog::OnCancel)
 511 END_EVENT_TABLE()
 512
 513 wxPrintAbortDialog::wxPrintAbortDialog(wxWindow *parent,
 514                                        const wxString& documentTitle,
 515                                        const wxPoint& pos,
 516                                        const wxSize& size,
 517                                        long style,
 518                                        const wxString& name)
 519     : wxDialog(parent, wxID_ANY, _("Printing"), pos, size, style, name)
 520 {
 521     wxBoxSizer *mainSizer = new wxBoxSizer(wxVERTICAL);
 522     mainSizer->Add(new wxStaticText(this, wxID_ANY, _("Please wait while printing...")),
 523                    wxSizerFlags().Expand().DoubleBorder());
 524
 525     wxFlexGridSizer *gridSizer = new wxFlexGridSizer(2, wxSize(20, 0));
 526     gridSizer->Add(new wxStaticText(this, wxID_ANY, _("Document:")));
 527     gridSizer->AddGrowableCol(1);
 528     gridSizer->Add(new wxStaticText(this, wxID_ANY, documentTitle));
 529     gridSizer->Add(new wxStaticText(this, wxID_ANY, _("Progress:")));
 530     m_progress = new wxStaticText(this, wxID_ANY, _("Preparing"));
 531     m_progress->SetMinSize(wxSize(250, -1));
 532     gridSizer->Add(m_progress);
 533     mainSizer->Add(gridSizer, wxSizerFlags().Expand().DoubleBorder(wxLEFT | wxRIGHT));
 534
 535     mainSizer->Add(CreateStdDialogButtonSizer(wxCANCEL),
 536                    wxSizerFlags().Expand().DoubleBorder());
 537
 538     SetSizerAndFit(mainSizer);
 539 }
 540
 541 void wxPrintAbortDialog::SetProgress(int currentPage, int totalPages,
 542                                      int currentCopy, int totalCopies)
 543 {
 544   wxString text;
 545   text.Printf(_("Printing page %d of %d"), currentPage, totalPages);
 546   if ( totalCopies > 1 )
 547       text += wxString::Format(_(" (copy %d of %d)"), currentCopy, totalCopies);
 548   m_progress->SetLabel(text);
 549 }
 550
 551 void wxPrintAbortDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 552 {
 553     wxCHECK_RET( wxPrinterBase::sm_abortWindow != NULL, "OnCancel called twice" );
 554
 555     wxPrinterBase::sm_abortIt = true;
 556     wxPrinterBase::sm_abortWindow->Destroy();
 557     wxPrinterBase::sm_abortWindow = NULL;
 558 }
 559
 560 //----------------------------------------------------------------------------
 561 // wxPrintout
 562 //----------------------------------------------------------------------------
 563
 564 IMPLEMENT_ABSTRACT_CLASS(wxPrintout, wxObject)
 565
 566 wxPrintout::wxPrintout(const wxString& title)
 567 {
 568     m_printoutTitle = title ;
 569     m_printoutDC = NULL;
 570     m_pageWidthMM = 0;
 571     m_pageHeightMM = 0;
 572     m_pageWidthPixels = 0;
 573     m_pageHeightPixels = 0;
 574     m_PPIScreenX = 0;
 575     m_PPIScreenY = 0;
 576     m_PPIPrinterX = 0;
 577     m_PPIPrinterY = 0;
 578     m_preview = NULL;
 579 }
 580
 581 wxPrintout::~wxPrintout()
 582 {
 583 }
 584
 585 bool wxPrintout::OnBeginDocument(int WXUNUSED(startPage), int WXUNUSED(endPage))
 586 {
 587     return GetDC()->StartDoc(_("Printing ") + m_printoutTitle);
 588 }
 589
 590 void wxPrintout::OnEndDocument()
 591 {
 592     GetDC()->EndDoc();
 593 }
 594
 595 void wxPrintout::OnBeginPrinting()
 596 {
 597 }
 598
 599 void wxPrintout::OnEndPrinting()
 600 {
 601 }
 602
 603 bool wxPrintout::HasPage(int page)
 604 {
 605     return (page == 1);
 606 }
 607
 608 void wxPrintout::GetPageInfo(int *minPage, int *maxPage, int *fromPage, int *toPage)
 609 {
 610     *minPage = 1;
 611     *maxPage = 32000;
 612     *fromPage = 1;
 613     *toPage = 1;
 614 }
 615
 616 void wxPrintout::FitThisSizeToPaper(const wxSize& imageSize)
 617 {
 618     // Set the DC scale and origin so that the given image size fits within the
 619     // entire page and the origin is at the top left corner of the page. Note
 620     // that with most printers, portions of the page will be non-printable. Use
 621     // this if you're managing your own page margins.
 622     if (!m_printoutDC) return;
 623     wxRect paperRect = GetPaperRectPixels();
 624     wxCoord pw, ph;
 625     GetPageSizePixels(&pw, &ph);
 626     wxCoord w, h;
 627     m_printoutDC->GetSize(&w, &h);
 628     float scaleX = ((float(paperRect.width) * w) / (float(pw) * imageSize.x));
 629     float scaleY = ((float(paperRect.height) * h) / (float(ph) * imageSize.y));
 630     float actualScale = wxMin(scaleX, scaleY);
 631     m_printoutDC->SetUserScale(actualScale, actualScale);
 632     m_printoutDC->SetDeviceOrigin(0, 0);
 633     wxRect logicalPaperRect = GetLogicalPaperRect();
 634     SetLogicalOrigin(logicalPaperRect.x, logicalPaperRect.y);
 635 }
 636
 637 void wxPrintout::FitThisSizeToPage(const wxSize& imageSize)
 638 {
 639     // Set the DC scale and origin so that the given image size fits within the
 640     // printable area of the page and the origin is at the top left corner of
 641     // the printable area.
 642     if (!m_printoutDC) return;
 643     int w, h;
 644     m_printoutDC->GetSize(&w, &h);
 645     float scaleX = float(w) / imageSize.x;
 646     float scaleY = float(h) / imageSize.y;
 647     float actualScale = wxMin(scaleX, scaleY);
 648     m_printoutDC->SetUserScale(actualScale, actualScale);
 649     m_printoutDC->SetDeviceOrigin(0, 0);
 650 }
 651
 652 void wxPrintout::FitThisSizeToPageMargins(const wxSize& imageSize, const wxPageSetupDialogData& pageSetupData)
 653 {
 654     // Set the DC scale and origin so that the given image size fits within the
 655     // page margins defined in the given wxPageSetupDialogData object and the
 656     // origin is at the top left corner of the page margins.
 657     if (!m_printoutDC) return;
 658     wxRect paperRect = GetPaperRectPixels();
 659     wxCoord pw, ph;
 660     GetPageSizePixels(&pw, &ph);
 661     wxPoint topLeft = pageSetupData.GetMarginTopLeft();
 662     wxPoint bottomRight = pageSetupData.GetMarginBottomRight();
 663     wxCoord mw, mh;
 664     GetPageSizeMM(&mw, &mh);
 665     float mmToDeviceX = float(pw) / mw;
 666     float mmToDeviceY = float(ph) / mh;
 667     wxRect pageMarginsRect(paperRect.x + wxRound(mmToDeviceX * topLeft.x),
 668         paperRect.y + wxRound(mmToDeviceY * topLeft.y),
 669         paperRect.width - wxRound(mmToDeviceX * (topLeft.x + bottomRight.x)),
 670         paperRect.height - wxRound(mmToDeviceY * (topLeft.y + bottomRight.y)));
 671     wxCoord w, h;
 672     m_printoutDC->GetSize(&w, &h);
 673     float scaleX = (float(pageMarginsRect.width) * w) / (float(pw) * imageSize.x);
 674     float scaleY = (float(pageMarginsRect.height) * h) / (float(ph) * imageSize.y);
 675     float actualScale = wxMin(scaleX, scaleY);
 676     m_printoutDC->SetUserScale(actualScale, actualScale);
 677     m_printoutDC->SetDeviceOrigin(0, 0);
 678     wxRect logicalPageMarginsRect = GetLogicalPageMarginsRect(pageSetupData);
 679     SetLogicalOrigin(logicalPageMarginsRect.x, logicalPageMarginsRect.y);
 680 }
 681
 682 void wxPrintout::MapScreenSizeToPaper()
 683 {
 684     // Set the DC scale so that an image on the screen is the same size on the
 685     // paper and the origin is at the top left of the paper. Note that with most
 686     // printers, portions of the page will be cut off. Use this if you're
 687     // managing your own page margins.
 688     if (!m_printoutDC) return;
 689     MapScreenSizeToPage();
 690     wxRect logicalPaperRect = GetLogicalPaperRect();
 691     SetLogicalOrigin(logicalPaperRect.x, logicalPaperRect.y);
 692 }
 693
 694 void wxPrintout::MapScreenSizeToPage()
 695 {
 696     // Set the DC scale and origin so that an image on the screen is the same
 697     // size on the paper and the origin is at the top left of the printable area.
 698     if (!m_printoutDC) return;
 699     int ppiScreenX, ppiScreenY;
 700     GetPPIScreen(&ppiScreenX, &ppiScreenY);
 701     int ppiPrinterX, ppiPrinterY;
 702     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 703     int w, h;
 704     m_printoutDC->GetSize(&w, &h);
 705     int pageSizePixelsX, pageSizePixelsY;
 706     GetPageSizePixels(&pageSizePixelsX, &pageSizePixelsY);
 707     float userScaleX = (float(ppiPrinterX) * w) / (float(ppiScreenX) * pageSizePixelsX);
 708     float userScaleY = (float(ppiPrinterY) * h) / (float(ppiScreenY) * pageSizePixelsY);
 709     m_printoutDC->SetUserScale(userScaleX, userScaleY);
 710     m_printoutDC->SetDeviceOrigin(0, 0);
 711 }
 712
 713 void wxPrintout::MapScreenSizeToPageMargins(const wxPageSetupDialogData& pageSetupData)
 714 {
 715     // Set the DC scale so that an image on the screen is the same size on the
 716     // paper and the origin is at the top left of the page margins defined by
 717     // the given wxPageSetupDialogData object.
 718     if (!m_printoutDC) return;
 719     MapScreenSizeToPage();
 720     wxRect logicalPageMarginsRect = GetLogicalPageMarginsRect(pageSetupData);
 721     SetLogicalOrigin(logicalPageMarginsRect.x, logicalPageMarginsRect.y);
 722 }
 723
 724 void wxPrintout::MapScreenSizeToDevice()
 725 {
 726     // Set the DC scale so that a screen pixel is the same size as a device
 727     // pixel and the origin is at the top left of the printable area.
 728     if (!m_printoutDC) return;
 729     int w, h;
 730     m_printoutDC->GetSize(&w, &h);
 731     int pageSizePixelsX, pageSizePixelsY;
 732     GetPageSizePixels(&pageSizePixelsX, &pageSizePixelsY);
 733     float userScaleX = float(w) / pageSizePixelsX;
 734     float userScaleY = float(h) / pageSizePixelsY;
 735     m_printoutDC->SetUserScale(userScaleX, userScaleY);
 736     m_printoutDC->SetDeviceOrigin(0, 0);
 737 }
 738
 739 wxRect wxPrintout::GetLogicalPaperRect() const
 740 {
 741     // Return the rectangle in logical units that corresponds to the paper
 742     // rectangle.
 743     wxRect paperRect = GetPaperRectPixels();
 744     wxCoord pw, ph;
 745     GetPageSizePixels(&pw, &ph);
 746     wxCoord w, h;
 747     m_printoutDC->GetSize(&w, &h);
 748     if (w == pw && h == ph) {
 749         // this DC matches the printed page, so no scaling
 750         return wxRect(m_printoutDC->DeviceToLogicalX(paperRect.x),
 751             m_printoutDC->DeviceToLogicalY(paperRect.y),
 752             m_printoutDC->DeviceToLogicalXRel(paperRect.width),
 753             m_printoutDC->DeviceToLogicalYRel(paperRect.height));
 754     }
 755     // This DC doesn't match the printed page, so we have to scale.
 756     float scaleX = float(w) / pw;
 757     float scaleY = float(h) / ph;
 758     return wxRect(m_printoutDC->DeviceToLogicalX(wxRound(paperRect.x * scaleX)),
 759         m_printoutDC->DeviceToLogicalY(wxRound(paperRect.y * scaleY)),
 760         m_printoutDC->DeviceToLogicalXRel(wxRound(paperRect.width * scaleX)),
 761         m_printoutDC->DeviceToLogicalYRel(wxRound(paperRect.height * scaleY)));
 762 }
 763
 764 wxRect wxPrintout::GetLogicalPageRect() const
 765 {
 766     // Return the rectangle in logical units that corresponds to the printable
 767     // area.
 768     int w, h;
 769     m_printoutDC->GetSize(&w, &h);
 770     return wxRect(m_printoutDC->DeviceToLogicalX(0),
 771         m_printoutDC->DeviceToLogicalY(0),
 772         m_printoutDC->DeviceToLogicalXRel(w),
 773         m_printoutDC->DeviceToLogicalYRel(h));
 774 }
 775
 776 wxRect wxPrintout::GetLogicalPageMarginsRect(const wxPageSetupDialogData& pageSetupData) const
 777 {
 778     // Return the rectangle in logical units that corresponds to the region
 779     // within the page margins as specified by the given wxPageSetupDialogData
 780     // object.
 781
 782     // We get the paper size in device units and the margins in mm,
 783     // so we need to calculate the conversion with this trick
 784     wxCoord pw, ph;
 785     GetPageSizePixels(&pw, &ph);
 786     wxCoord mw, mh;
 787     GetPageSizeMM(&mw, &mh);
 788     float mmToDeviceX = float(pw) / mw;
 789     float mmToDeviceY = float(ph) / mh;
 790
 791     // paper size in device units
 792     wxRect paperRect = GetPaperRectPixels();
 793
 794     // margins in mm
 795     wxPoint topLeft = pageSetupData.GetMarginTopLeft();
 796     wxPoint bottomRight = pageSetupData.GetMarginBottomRight();
 797
 798     // calculate margins in device units
 799     wxRect pageMarginsRect(
 800         paperRect.x      + wxRound(mmToDeviceX * topLeft.x),
 801         paperRect.y      + wxRound(mmToDeviceY * topLeft.y),
 802         paperRect.width  - wxRound(mmToDeviceX * (topLeft.x + bottomRight.x)),
 803         paperRect.height - wxRound(mmToDeviceY * (topLeft.y + bottomRight.y)));
 804
 805     wxCoord w, h;
 806     m_printoutDC->GetSize(&w, &h);
 807     if (w == pw && h == ph)
 808     {
 809         // this DC matches the printed page, so no scaling
 810         return wxRect(
 811             m_printoutDC->DeviceToLogicalX(pageMarginsRect.x),
 812             m_printoutDC->DeviceToLogicalY(pageMarginsRect.y),
 813             m_printoutDC->DeviceToLogicalXRel(pageMarginsRect.width),
 814             m_printoutDC->DeviceToLogicalYRel(pageMarginsRect.height));
 815     }
 816
 817     // This DC doesn't match the printed page, so we have to scale.
 818     float scaleX = float(w) / pw;
 819     float scaleY = float(h) / ph;
 820     return wxRect(m_printoutDC->DeviceToLogicalX(wxRound(pageMarginsRect.x * scaleX)),
 821         m_printoutDC->DeviceToLogicalY(wxRound(pageMarginsRect.y * scaleY)),
 822         m_printoutDC->DeviceToLogicalXRel(wxRound(pageMarginsRect.width * scaleX)),
 823         m_printoutDC->DeviceToLogicalYRel(wxRound(pageMarginsRect.height * scaleY)));
 824 }
 825
 826 void wxPrintout::SetLogicalOrigin(wxCoord x, wxCoord y)
 827 {
 828     // Set the device origin by specifying a point in logical coordinates.
 829     m_printoutDC->SetDeviceOrigin(
 830         m_printoutDC->LogicalToDeviceX(x),
 831         m_printoutDC->LogicalToDeviceY(y) );
 832 }
 833
 834 void wxPrintout::OffsetLogicalOrigin(wxCoord xoff, wxCoord yoff)
 835 {
 836     // Offset the device origin by a specified distance in device coordinates.
 837     wxPoint dev_org = m_printoutDC->GetDeviceOrigin();
 838     m_printoutDC->SetDeviceOrigin(
 839         dev_org.x + m_printoutDC->LogicalToDeviceXRel(xoff),
 840         dev_org.y + m_printoutDC->LogicalToDeviceYRel(yoff) );
 841 }
 842
 843
 844 //----------------------------------------------------------------------------
 845 // wxPreviewCanvas
 846 //----------------------------------------------------------------------------
 847
 848 IMPLEMENT_CLASS(wxPreviewCanvas, wxWindow)
 849
 850 BEGIN_EVENT_TABLE(wxPreviewCanvas, wxScrolledWindow)
 851     EVT_PAINT(wxPreviewCanvas::OnPaint)
 852     EVT_CHAR(wxPreviewCanvas::OnChar)
 853     EVT_IDLE(wxPreviewCanvas::OnIdle)
 854     EVT_SYS_COLOUR_CHANGED(wxPreviewCanvas::OnSysColourChanged)
 855 #if wxUSE_MOUSEWHEEL
 856     EVT_MOUSEWHEEL(wxPreviewCanvas::OnMouseWheel)
 857 #endif
 858 END_EVENT_TABLE()
 859
 860 // VZ: the current code doesn't refresh properly without
 861 //     wxFULL_REPAINT_ON_RESIZE, this must be fixed as otherwise we have
 862 //     really horrible flicker when resizing the preview frame, but without
 863 //     this style it simply doesn't work correctly at all...
 864 wxPreviewCanvas::wxPreviewCanvas(wxPrintPreviewBase *preview, wxWindow *parent,
 865                                  const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 866 wxScrolledWindow(parent, wxID_ANY, pos, size, style | wxFULL_REPAINT_ON_RESIZE, name)
 867 {
 868     m_printPreview = preview;
 869 #ifdef __WXMAC__
 870     // The app workspace colour is always white, but we should have
 871     // a contrast with the page.
 872     wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW;
 873 #elif defined(__WXGTK__)
 874     wxSystemColour colourIndex = wxSYS_COLOUR_BTNFACE;
 875 #else
 876     wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE;
 877 #endif
 878     SetBackgroundColour(wxSystemSettings::GetColour(colourIndex));
 879
 880     SetScrollbars(10, 10, 100, 100);
 881 }
 882
 883 wxPreviewCanvas::~wxPreviewCanvas()
 884 {
 885 }
 886
 887 void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
 888 {
 889     wxPaintDC dc(this);
 890     PrepareDC( dc );
 891
 892 /*
 893 #ifdef __WXGTK__
 894     if (!GetUpdateRegion().IsEmpty())
 895         dc.SetClippingRegion( GetUpdateRegion() );
 896 #endif
 897 */
 898
 899     if (m_printPreview)
 900     {
 901         m_printPreview->PaintPage(this, dc);
 902     }
 903 }
 904
 905 void wxPreviewCanvas::OnIdle(wxIdleEvent& event)
 906 {
 907     event.Skip();
 908
 909     // prevent UpdatePageRendering() from being called recursively:
 910     static bool s_inIdle = false;
 911     if ( s_inIdle )
 912         return;
 913     s_inIdle = true;
 914
 915     if ( m_printPreview )
 916     {
 917         if ( m_printPreview->UpdatePageRendering() )
 918             Refresh();
 919     }
 920
 921     s_inIdle = false;
 922 }
 923
 924 // Responds to colour changes, and passes event on to children.
 925 void wxPreviewCanvas::OnSysColourChanged(wxSysColourChangedEvent& event)
 926 {
 927 #ifdef __WXMAC__
 928     // The app workspace colour is always white, but we should have
 929     // a contrast with the page.
 930     wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW;
 931 #elif defined(__WXGTK__)
 932     wxSystemColour colourIndex = wxSYS_COLOUR_BTNFACE;
 933 #else
 934     wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE;
 935 #endif
 936     SetBackgroundColour(wxSystemSettings::GetColour(colourIndex));
 937     Refresh();
 938
 939     // Propagate the event to the non-top-level children
 940     wxWindow::OnSysColourChanged(event);
 941 }
 942
 943 void wxPreviewCanvas::OnChar(wxKeyEvent &event)
 944 {
 945     wxPreviewControlBar* controlBar = ((wxPreviewFrame*) GetParent())->GetControlBar();
 946     switch (event.GetKeyCode())
 947     {
 948         case WXK_RETURN:
 949             controlBar->OnPrint();
 950             return;
 951         case (int)'+':
 952         case WXK_NUMPAD_ADD:
 953         case WXK_ADD:
 954             controlBar->DoZoomIn();
 955             return;
 956         case (int)'-':
 957         case WXK_NUMPAD_SUBTRACT:
 958         case WXK_SUBTRACT:
 959             controlBar->DoZoomOut();
 960             return;
 961     }
 962
 963     if (!event.ControlDown())
 964     {
 965         event.Skip();
 966         return;
 967     }
 968
 969     switch(event.GetKeyCode())
 970     {
 971         case WXK_PAGEDOWN:
 972             controlBar->OnNext(); break;
 973         case WXK_PAGEUP:
 974             controlBar->OnPrevious(); break;
 975         case WXK_HOME:
 976             controlBar->OnFirst(); break;
 977         case WXK_END:
 978             controlBar->OnLast(); break;
 979         default:
 980             event.Skip();
 981     }
 982 }
 983
 984 #if wxUSE_MOUSEWHEEL
 985
 986 void wxPreviewCanvas::OnMouseWheel(wxMouseEvent& event)
 987 {
 988     wxPreviewControlBar *
 989         controlBar = wxStaticCast(GetParent(), wxPreviewFrame)->GetControlBar();
 990
 991     if ( controlBar )
 992     {
 993         if ( event.ControlDown() && event.GetWheelRotation() != 0 )
 994         {
 995             int currentZoom = controlBar->GetZoomControl();
 996
 997             int delta;
 998             if ( currentZoom < 100 )
 999                 delta = 5;
1000             else if ( currentZoom <= 120 )
1001                 delta = 10;
1002             else
1003                 delta = 50;
1004
1005             if ( event.GetWheelRotation() > 0 )
1006                 delta = -delta;
1007
1008             int newZoom = currentZoom + delta;
1009             if ( newZoom < 10 )
1010                 newZoom = 10;
1011             if ( newZoom > 200 )
1012                 newZoom = 200;
1013             if ( newZoom != currentZoom )
1014             {
1015                 controlBar->SetZoomControl(newZoom);
1016                 m_printPreview->SetZoom(newZoom);
1017                 Refresh();
1018             }
1019             return;
1020         }
1021     }
1022
1023     event.Skip();
1024 }
1025
1026 #endif // wxUSE_MOUSEWHEEL
1027
1028 namespace
1029 {
1030
1031 // This is by the controls in the print preview as the maximal (and hence
1032 // longest) page number we may have to display.
1033 enum { MAX_PAGE_NUMBER = 99999 };
1034
1035 } // anonymous namespace
1036
1037 // ----------------------------------------------------------------------------
1038 // wxPrintPageMaxCtrl
1039 // ----------------------------------------------------------------------------
1040
1041 // A simple static control showing the maximal number of pages.
1042 class wxPrintPageMaxCtrl : public wxStaticText
1043 {
1044 public:
1045     wxPrintPageMaxCtrl(wxWindow *parent)
1046         : wxStaticText(
1047                         parent,
1048                         wxID_ANY,
1049                         wxString(),
1050                         wxDefaultPosition,
1051                         wxSize
1052                         (
1053                          parent->GetTextExtent(MaxAsString(MAX_PAGE_NUMBER)).x,
1054                          wxDefaultCoord
1055                         ),
1056                         wxST_NO_AUTORESIZE | wxALIGN_CENTRE
1057                       )
1058     {
1059     }
1060
1061     // Set the maximal page to display once we really know what it is.
1062     void SetMaxPage(int maxPage)
1063     {
1064         SetLabel(MaxAsString(maxPage));
1065     }
1066
1067 private:
1068     static wxString MaxAsString(int maxPage)
1069     {
1070         return wxString::Format("/ %d", maxPage);
1071     }
1072
1073     wxDECLARE_NO_COPY_CLASS(wxPrintPageMaxCtrl);
1074 };
1075
1076 // ----------------------------------------------------------------------------
1077 // wxPrintPageTextCtrl
1078 // ----------------------------------------------------------------------------
1079
1080 // This text control contains the page number in the specified interval.
1081 //
1082 // Invalid pages are not accepted and the control contents is validated when it
1083 // loses focus. Conversely, if the user changes the page to another valid one
1084 // or presses Enter, OnGotoPage() method of the preview object will be called.
1085 class wxPrintPageTextCtrl : public wxTextCtrl
1086 {
1087 public:
1088     wxPrintPageTextCtrl(wxPreviewControlBar *preview)
1089         : wxTextCtrl(preview,
1090                      wxID_PREVIEW_GOTO,
1091                      wxString(),
1092                      wxDefaultPosition,
1093                      // We use hardcoded maximal page number for the width
1094                      // instead of fitting it to the values we can show because
1095                      // the control looks uncomfortably narrow if the real page
1096                      // number is just one or two digits.
1097                      wxSize
1098                      (
1099                       preview->GetTextExtent(PageAsString(MAX_PAGE_NUMBER)).x,
1100                       wxDefaultCoord
1101                      ),
1102                      wxTE_PROCESS_ENTER
1103 #if wxUSE_VALIDATORS
1104                      , wxTextValidator(wxFILTER_DIGITS)
1105 #endif // wxUSE_VALIDATORS
1106                     ),
1107           m_preview(preview)
1108     {
1109         m_minPage =
1110         m_maxPage =
1111         m_page = 1;
1112
1113         Connect(wxEVT_KILL_FOCUS,
1114                 wxFocusEventHandler(wxPrintPageTextCtrl::OnKillFocus));
1115         Connect(wxEVT_TEXT_ENTER,
1116                 wxCommandEventHandler(wxPrintPageTextCtrl::OnTextEnter));
1117     }
1118
1119     // Update the pages range, must be called after OnPreparePrinting() as
1120     // these values are not known before.
1121     void SetPageInfo(int minPage, int maxPage)
1122     {
1123         m_minPage = minPage;
1124         m_maxPage = maxPage;
1125
1126         // Show the first page by default.
1127         SetPageNumber(minPage);
1128     }
1129
1130     // Helpers to conveniently set or get the current page number. Return value
1131     // is 0 if the current controls contents is invalid.
1132     void SetPageNumber(int page)
1133     {
1134         wxASSERT( IsValidPage(page) );
1135
1136         SetValue(PageAsString(page));
1137     }
1138
1139     int GetPageNumber() const
1140     {
1141         long value;
1142         if ( !GetValue().ToLong(&value) || !IsValidPage(value) )
1143             return 0;
1144
1145         // Cast is safe because the value is less than (int) m_maxPage.
1146         return static_cast<int>(value);
1147     }
1148
1149 private:
1150     static wxString PageAsString(int page)
1151     {
1152         return wxString::Format("%d", page);
1153     }
1154
1155     bool IsValidPage(int page) const
1156     {
1157         return page >= m_minPage && page <= m_maxPage;
1158     }
1159
1160     bool DoChangePage()
1161     {
1162         const int page = GetPageNumber();
1163
1164         if ( !page )
1165             return false;
1166
1167         if ( page != m_page )
1168         {
1169             // We have a valid page, remember it.
1170             m_page = page;
1171
1172             // And notify the owner about the change.
1173             m_preview->OnGotoPage();
1174         }
1175         //else: Nothing really changed.
1176
1177         return true;
1178     }
1179
1180     void OnKillFocus(wxFocusEvent& event)
1181     {
1182         if ( !DoChangePage() )
1183         {
1184             // The current contents is invalid so reset it back to the last
1185             // known good page index.
1186             SetPageNumber(m_page);
1187         }
1188
1189         event.Skip();
1190     }
1191
1192     void OnTextEnter(wxCommandEvent& WXUNUSED(event))
1193     {
1194         DoChangePage();
1195     }
1196
1197
1198     wxPreviewControlBar * const m_preview;
1199
1200     int m_minPage,
1201         m_maxPage;
1202
1203     // This is the last valid page value that we had, we revert to it if an
1204     // invalid page is entered.
1205     int m_page;
1206
1207     wxDECLARE_NO_COPY_CLASS(wxPrintPageTextCtrl);
1208 };
1209
1210 //----------------------------------------------------------------------------
1211 // wxPreviewControlBar
1212 //----------------------------------------------------------------------------
1213
1214 IMPLEMENT_CLASS(wxPreviewControlBar, wxWindow)
1215
1216 BEGIN_EVENT_TABLE(wxPreviewControlBar, wxPanel)
1217     EVT_BUTTON(wxID_PREVIEW_CLOSE,    wxPreviewControlBar::OnWindowClose)
1218     EVT_BUTTON(wxID_PREVIEW_PRINT,    wxPreviewControlBar::OnPrintButton)
1219     EVT_BUTTON(wxID_PREVIEW_PREVIOUS, wxPreviewControlBar::OnPreviousButton)
1220     EVT_BUTTON(wxID_PREVIEW_NEXT,     wxPreviewControlBar::OnNextButton)
1221     EVT_BUTTON(wxID_PREVIEW_FIRST,    wxPreviewControlBar::OnFirstButton)
1222     EVT_BUTTON(wxID_PREVIEW_LAST,     wxPreviewControlBar::OnLastButton)
1223     EVT_BUTTON(wxID_PREVIEW_ZOOM_IN,  wxPreviewControlBar::OnZoomInButton)
1224     EVT_BUTTON(wxID_PREVIEW_ZOOM_OUT, wxPreviewControlBar::OnZoomOutButton)
1225
1226     EVT_UPDATE_UI(wxID_PREVIEW_PREVIOUS, wxPreviewControlBar::OnUpdatePreviousButton)
1227     EVT_UPDATE_UI(wxID_PREVIEW_NEXT,     wxPreviewControlBar::OnUpdateNextButton)
1228     EVT_UPDATE_UI(wxID_PREVIEW_FIRST,    wxPreviewControlBar::OnUpdateFirstButton)
1229     EVT_UPDATE_UI(wxID_PREVIEW_LAST,     wxPreviewControlBar::OnUpdateLastButton)
1230     EVT_UPDATE_UI(wxID_PREVIEW_ZOOM_IN,  wxPreviewControlBar::OnUpdateZoomInButton)
1231     EVT_UPDATE_UI(wxID_PREVIEW_ZOOM_OUT, wxPreviewControlBar::OnUpdateZoomOutButton)
1232
1233     EVT_CHOICE(wxID_PREVIEW_ZOOM,     wxPreviewControlBar::OnZoomChoice)
1234     EVT_PAINT(wxPreviewControlBar::OnPaint)
1235
1236 END_EVENT_TABLE()
1237
1238 wxPreviewControlBar::wxPreviewControlBar(wxPrintPreviewBase *preview, long buttons,
1239                                          wxWindow *parent, const wxPoint& pos, const wxSize& size,
1240                                          long style, const wxString& name):
1241 wxPanel(parent, wxID_ANY, pos, size, style, name)
1242 {
1243     m_printPreview = preview;
1244     m_closeButton = NULL;
1245     m_zoomControl = NULL;
1246     m_currentPageText = NULL;
1247     m_maxPageText = NULL;
1248     m_buttonFlags = buttons;
1249 }
1250
1251 wxPreviewControlBar::~wxPreviewControlBar()
1252 {
1253 }
1254
1255 void wxPreviewControlBar::OnPaint(wxPaintEvent& WXUNUSED(event))
1256 {
1257     wxPaintDC dc(this);
1258
1259     int w, h;
1260     GetSize(&w, &h);
1261     dc.SetPen(*wxBLACK_PEN);
1262     dc.SetBrush(*wxTRANSPARENT_BRUSH);
1263     dc.DrawLine( 0, h-1, w, h-1 );
1264 }
1265
1266 void wxPreviewControlBar::OnWindowClose(wxCommandEvent& WXUNUSED(event))
1267 {
1268     wxPreviewFrame *frame = (wxPreviewFrame *)GetParent();
1269     frame->Close(true);
1270 }
1271
1272 void wxPreviewControlBar::OnPrint(void)
1273 {
1274     wxPrintPreviewBase *preview = GetPrintPreview();
1275     preview->Print(true);
1276 }
1277
1278 void wxPreviewControlBar::OnNext()
1279 {
1280     if ( IsNextEnabled() )
1281         DoGotoPage(GetPrintPreview()->GetCurrentPage() + 1);
1282 }
1283
1284 void wxPreviewControlBar::OnPrevious()
1285 {
1286     if ( IsPreviousEnabled() )
1287         DoGotoPage(GetPrintPreview()->GetCurrentPage() - 1);
1288 }
1289
1290 void wxPreviewControlBar::OnFirst()
1291 {
1292     if ( IsFirstEnabled() )
1293         DoGotoPage(GetPrintPreview()->GetMinPage());
1294 }
1295
1296 void wxPreviewControlBar::OnLast()
1297 {
1298     if ( IsLastEnabled() )
1299         DoGotoPage(GetPrintPreview()->GetMaxPage());
1300 }
1301
1302 bool wxPreviewControlBar::IsNextEnabled() const
1303 {
1304     wxPrintPreviewBase *preview = GetPrintPreview();
1305     if ( !preview )
1306         return false;
1307
1308     const int currentPage = preview->GetCurrentPage();
1309     return currentPage < preview->GetMaxPage() &&
1310                 preview->GetPrintout()->HasPage(currentPage + 1);
1311 }
1312
1313 bool wxPreviewControlBar::IsPreviousEnabled() const
1314 {
1315     wxPrintPreviewBase *preview = GetPrintPreview();
1316     if ( !preview )
1317         return false;
1318
1319     const int currentPage = preview->GetCurrentPage();
1320     return currentPage > preview->GetMinPage() &&
1321                 preview->GetPrintout()->HasPage(currentPage - 1);
1322 }
1323
1324 bool wxPreviewControlBar::IsFirstEnabled() const
1325 {
1326     wxPrintPreviewBase *preview = GetPrintPreview();
1327     if (!preview)
1328         return false;
1329
1330     return preview->GetPrintout()->HasPage(preview->GetMinPage());
1331 }
1332
1333 bool wxPreviewControlBar::IsLastEnabled() const
1334 {
1335     wxPrintPreviewBase *preview = GetPrintPreview();
1336     if (!preview)
1337         return false;
1338
1339     return preview->GetPrintout()->HasPage(preview->GetMaxPage());
1340 }
1341
1342 void wxPreviewControlBar::DoGotoPage(int page)
1343 {
1344     wxPrintPreviewBase *preview = GetPrintPreview();
1345     wxCHECK_RET( preview, "Shouldn't be called if there is no preview." );
1346
1347     preview->SetCurrentPage(page);
1348
1349     if ( m_currentPageText )
1350         m_currentPageText->SetPageNumber(page);
1351 }
1352
1353 void wxPreviewControlBar::OnGotoPage()
1354 {
1355     wxPrintPreviewBase *preview = GetPrintPreview();
1356     if (preview)
1357     {
1358         if (preview->GetMinPage() > 0)
1359         {
1360             long currentPage = m_currentPageText->GetPageNumber();
1361             if ( currentPage )
1362             {
1363                 if (preview->GetPrintout()->HasPage(currentPage))
1364                 {
1365                     preview->SetCurrentPage(currentPage);
1366                 }
1367             }
1368         }
1369     }
1370 }
1371
1372 void wxPreviewControlBar::DoZoom()
1373 {
1374     int zoom = GetZoomControl();
1375     if (GetPrintPreview())
1376         GetPrintPreview()->SetZoom(zoom);
1377 }
1378
1379 bool wxPreviewControlBar::IsZoomInEnabled() const
1380 {
1381     if ( !m_zoomControl )
1382         return false;
1383
1384     const unsigned sel = m_zoomControl->GetSelection();
1385     return sel < m_zoomControl->GetCount() - 1;
1386 }
1387
1388 bool wxPreviewControlBar::IsZoomOutEnabled() const
1389 {
1390     return m_zoomControl && m_zoomControl->GetSelection() > 0;
1391 }
1392
1393 void wxPreviewControlBar::DoZoomIn()
1394 {
1395     if (IsZoomInEnabled())
1396     {
1397         m_zoomControl->SetSelection(m_zoomControl->GetSelection() + 1);
1398         DoZoom();
1399     }
1400 }
1401
1402 void wxPreviewControlBar::DoZoomOut()
1403 {
1404     if (IsZoomOutEnabled())
1405     {
1406         m_zoomControl->SetSelection(m_zoomControl->GetSelection() - 1);
1407         DoZoom();
1408     }
1409 }
1410
1411 namespace
1412 {
1413
1414 // Helper class used by wxPreviewControlBar::CreateButtons() to add buttons
1415 // sequentially to it in the simplest way possible.
1416 class SizerWithButtons
1417 {
1418 public:
1419     // Constructor creates the sizer that will hold the buttons and stores the
1420     // parent that will be used for their creation.
1421     SizerWithButtons(wxWindow *parent)
1422         : m_sizer(new wxBoxSizer(wxHORIZONTAL)),
1423           m_parent(parent)
1424     {
1425         m_hasContents =
1426         m_needsSeparator = false;
1427     }
1428
1429     // Destructor associates the sizer with the parent window.
1430     ~SizerWithButtons()
1431     {
1432         m_parent->SetSizer(m_sizer);
1433         m_sizer->Fit(m_parent);
1434     }
1435
1436
1437     // Add an arbitrary window to the sizer.
1438     void Add(wxWindow *win)
1439     {
1440         if ( m_needsSeparator )
1441         {
1442             m_needsSeparator = false;
1443
1444             m_sizer->AddSpacer(2*wxSizerFlags::GetDefaultBorder());
1445         }
1446
1447         m_hasContents = true;
1448
1449         m_sizer->Add(win,
1450                      wxSizerFlags().Border(wxLEFT | wxTOP | wxBOTTOM).Center());
1451     }
1452
1453     // Add a button with the specified id, bitmap and tooltip.
1454     void AddButton(wxWindowID btnId,
1455                    const wxArtID& artId,
1456                    const wxString& tooltip)
1457     {
1458         // We don't use (smaller) images inside a button with a text label but
1459         // rather toolbar-like bitmap buttons hence use wxART_TOOLBAR and not
1460         // wxART_BUTTON here.
1461         wxBitmap bmp = wxArtProvider::GetBitmap(artId, wxART_TOOLBAR);
1462         wxBitmapButton * const btn = new wxBitmapButton(m_parent, btnId, bmp);
1463         btn->SetToolTip(tooltip);
1464
1465         Add(btn);
1466     }
1467
1468     // Add a control at the right end of the window. This should be called last
1469     // as everything else added after it will be added on the right side too.
1470     void AddAtEnd(wxWindow *win)
1471     {
1472         m_sizer->AddStretchSpacer();
1473         m_sizer->Add(win,
1474                      wxSizerFlags().Border(wxTOP | wxBOTTOM | wxRIGHT).Center());
1475     }
1476
1477     // Indicates the end of a group of buttons, a separator will be added after
1478     // it.
1479     void EndOfGroup()
1480     {
1481         if ( m_hasContents )
1482         {
1483             m_needsSeparator = true;
1484             m_hasContents = false;
1485         }
1486     }
1487
1488 private:
1489     wxSizer * const m_sizer;
1490     wxWindow * const m_parent;
1491
1492     // If true, we have some controls since the last group beginning. This is
1493     // used to avoid inserting two consecutive separators if EndOfGroup() is
1494     // called twice.
1495     bool m_hasContents;
1496
1497     // If true, a separator should be inserted before adding the next button.
1498     bool m_needsSeparator;
1499
1500     wxDECLARE_NO_COPY_CLASS(SizerWithButtons);
1501 };
1502
1503 } // anonymous namespace
1504
1505 void wxPreviewControlBar::CreateButtons()
1506 {
1507     SizerWithButtons sizer(this);
1508
1509     // Print button group (a single button).
1510     if (m_buttonFlags & wxPREVIEW_PRINT)
1511     {
1512         sizer.AddButton(wxID_PREVIEW_PRINT, wxART_PRINT, _("Print"));
1513         sizer.EndOfGroup();
1514     }
1515
1516     // Page selection buttons group.
1517     if (m_buttonFlags & wxPREVIEW_FIRST)
1518     {
1519         sizer.AddButton(wxID_PREVIEW_FIRST, wxART_GOTO_FIRST, _("First page"));
1520     }
1521
1522     if (m_buttonFlags & wxPREVIEW_PREVIOUS)
1523     {
1524         sizer.AddButton(wxID_PREVIEW_PREVIOUS, wxART_GO_BACK, _("Previous page"));
1525     }
1526
1527     if (m_buttonFlags & wxPREVIEW_GOTO)
1528     {
1529         m_currentPageText = new wxPrintPageTextCtrl(this);
1530         sizer.Add(m_currentPageText);
1531
1532         m_maxPageText = new wxPrintPageMaxCtrl(this);
1533         sizer.Add(m_maxPageText);
1534     }
1535
1536     if (m_buttonFlags & wxPREVIEW_NEXT)
1537     {
1538         sizer.AddButton(wxID_PREVIEW_NEXT, wxART_GO_FORWARD, _("Next page"));
1539     }
1540
1541     if (m_buttonFlags & wxPREVIEW_LAST)
1542     {
1543         sizer.AddButton(wxID_PREVIEW_LAST, wxART_GOTO_LAST, _("Last page"));
1544     }
1545
1546     sizer.EndOfGroup();
1547
1548     // Zoom controls group.
1549     if (m_buttonFlags & wxPREVIEW_ZOOM)
1550     {
1551         sizer.AddButton(wxID_PREVIEW_ZOOM_OUT, wxART_MINUS, _("Zoom Out"));
1552
1553         wxString choices[] =
1554         {
1555             wxT("10%"), wxT("15%"), wxT("20%"), wxT("25%"), wxT("30%"), wxT("35%"), wxT("40%"), wxT("45%"), wxT("50%"), wxT("55%"),
1556                 wxT("60%"), wxT("65%"), wxT("70%"), wxT("75%"), wxT("80%"), wxT("85%"), wxT("90%"), wxT("95%"), wxT("100%"), wxT("110%"),
1557                 wxT("120%"), wxT("150%"), wxT("200%")
1558         };
1559         int n = WXSIZEOF(choices);
1560
1561         m_zoomControl = new wxChoice( this, wxID_PREVIEW_ZOOM, wxDefaultPosition, wxSize(70,wxDefaultCoord), n, choices, 0 );
1562         sizer.Add(m_zoomControl);
1563         SetZoomControl(m_printPreview->GetZoom());
1564
1565         sizer.AddButton(wxID_PREVIEW_ZOOM_IN, wxART_PLUS, _("Zoom In"));
1566
1567         sizer.EndOfGroup();
1568     }
1569
1570     // Close button group (single button again).
1571     m_closeButton = new wxButton(this, wxID_PREVIEW_CLOSE, _("&Close"));
1572     sizer.AddAtEnd(m_closeButton);
1573 }
1574
1575 void wxPreviewControlBar::SetPageInfo(int minPage, int maxPage)
1576 {
1577     if ( m_currentPageText )
1578         m_currentPageText->SetPageInfo(minPage, maxPage);
1579
1580     if ( m_maxPageText )
1581         m_maxPageText->SetMaxPage(maxPage);
1582 }
1583
1584 void wxPreviewControlBar::SetZoomControl(int zoom)
1585 {
1586     if (m_zoomControl)
1587     {
1588         int n, count = m_zoomControl->GetCount();
1589         long val;
1590         for (n=0; n<count; n++)
1591         {
1592             if (m_zoomControl->GetString(n).BeforeFirst(wxT('%')).ToLong(&val) &&
1593                 (val >= long(zoom)))
1594             {
1595                 m_zoomControl->SetSelection(n);
1596                 return;
1597             }
1598         }
1599
1600         m_zoomControl->SetSelection(count-1);
1601     }
1602 }
1603
1604 int wxPreviewControlBar::GetZoomControl()
1605 {
1606     if (m_zoomControl && (m_zoomControl->GetStringSelection() != wxEmptyString))
1607     {
1608         long val;
1609         if (m_zoomControl->GetStringSelection().BeforeFirst(wxT('%')).ToLong(&val))
1610             return int(val);
1611     }
1612
1613     return 0;
1614 }
1615
1616
1617 /*
1618 * Preview frame
1619 */
1620
1621 IMPLEMENT_CLASS(wxPreviewFrame, wxFrame)
1622
1623 BEGIN_EVENT_TABLE(wxPreviewFrame, wxFrame)
1624     EVT_CHAR_HOOK(wxPreviewFrame::OnChar)
1625     EVT_CLOSE(wxPreviewFrame::OnCloseWindow)
1626 END_EVENT_TABLE()
1627
1628 void wxPreviewFrame::OnChar(wxKeyEvent &event)
1629 {
1630     if ( event.GetKeyCode() == WXK_ESCAPE )
1631     {
1632         Close(true);
1633     }
1634     else
1635     {
1636         event.Skip();
1637     }
1638 }
1639
1640 wxPreviewFrame::wxPreviewFrame(wxPrintPreviewBase *preview, wxWindow *parent, const wxString& title,
1641                                const wxPoint& pos, const wxSize& size, long style, const wxString& name):
1642 wxFrame(parent, wxID_ANY, title, pos, size, style, name)
1643 {
1644     m_printPreview = preview;
1645     m_controlBar = NULL;
1646     m_previewCanvas = NULL;
1647     m_windowDisabler = NULL;
1648     m_modalityKind = wxPreviewFrame_NonModal;
1649
1650     // Give the application icon
1651 #ifdef __WXMSW__
1652     wxFrame* topFrame = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
1653     if (topFrame)
1654         SetIcons(topFrame->GetIcons());
1655 #endif
1656 }
1657
1658 wxPreviewFrame::~wxPreviewFrame()
1659 {
1660     wxPrintout *printout = m_printPreview->GetPrintout();
1661     if (printout)
1662     {
1663         delete printout;
1664         m_printPreview->SetPrintout(NULL);
1665         m_printPreview->SetCanvas(NULL);
1666         m_printPreview->SetFrame(NULL);
1667     }
1668
1669     m_previewCanvas->SetPreview(NULL);
1670     delete m_printPreview;
1671 }
1672
1673 void wxPreviewFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
1674 {
1675     // Reenable any windows we disabled by undoing whatever we did in our
1676     // Initialize().
1677     switch ( m_modalityKind )
1678     {
1679         case wxPreviewFrame_AppModal:
1680             delete m_windowDisabler;
1681             m_windowDisabler = NULL;
1682             break;
1683
1684         case wxPreviewFrame_WindowModal:
1685             if ( GetParent() )
1686                 GetParent()->Enable();
1687             break;
1688
1689         case wxPreviewFrame_NonModal:
1690             break;
1691     }
1692
1693     Destroy();
1694 }
1695
1696 void wxPreviewFrame::InitializeWithModality(wxPreviewFrameModalityKind kind)
1697 {
1698 #if wxUSE_STATUSBAR
1699     CreateStatusBar();
1700 #endif
1701     CreateCanvas();
1702     CreateControlBar();
1703
1704     m_printPreview->SetCanvas(m_previewCanvas);
1705     m_printPreview->SetFrame(this);
1706
1707     wxBoxSizer *item0 = new wxBoxSizer( wxVERTICAL );
1708
1709     item0->Add( m_controlBar, 0, wxGROW|wxALIGN_CENTER_VERTICAL, 5 );
1710     item0->Add( m_previewCanvas, 1, wxGROW|wxALIGN_CENTER_VERTICAL, 5 );
1711
1712     SetAutoLayout( true );
1713     SetSizer( item0 );
1714
1715     m_modalityKind = kind;
1716     switch ( m_modalityKind )
1717     {
1718         case wxPreviewFrame_AppModal:
1719             // Disable everything.
1720             m_windowDisabler = new wxWindowDisabler( this );
1721             break;
1722
1723         case wxPreviewFrame_WindowModal:
1724             // Disable our parent if we have one.
1725             if ( GetParent() )
1726                 GetParent()->Disable();
1727             break;
1728
1729         case wxPreviewFrame_NonModal:
1730             // Nothing to do, we don't need to disable any windows.
1731             break;
1732     }
1733
1734     if ( m_modalityKind != wxPreviewFrame_NonModal )
1735     {
1736         // Behave like modal dialogs, don't show in taskbar. This implies
1737         // removing the minimize box, because minimizing windows without
1738         // taskbar entry is confusing.
1739         SetWindowStyle((GetWindowStyle() & ~wxMINIMIZE_BOX) | wxFRAME_NO_TASKBAR);
1740     }
1741
1742     Layout();
1743
1744     m_printPreview->AdjustScrollbars(m_previewCanvas);
1745     m_previewCanvas->SetFocus();
1746     m_controlBar->SetFocus();
1747 }
1748
1749 void wxPreviewFrame::CreateCanvas()
1750 {
1751     m_previewCanvas = new wxPreviewCanvas(m_printPreview, this);
1752 }
1753
1754 void wxPreviewFrame::CreateControlBar()
1755 {
1756     long buttons = wxPREVIEW_DEFAULT;
1757     if (m_printPreview->GetPrintoutForPrinting())
1758         buttons |= wxPREVIEW_PRINT;
1759
1760     m_controlBar = new wxPreviewControlBar(m_printPreview, buttons, this);
1761     m_controlBar->CreateButtons();
1762 }
1763
1764 /*
1765 * Print preview
1766 */
1767
1768 IMPLEMENT_CLASS(wxPrintPreviewBase, wxObject)
1769
1770 wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout,
1771                                        wxPrintout *printoutForPrinting,
1772                                        wxPrintData *data)
1773 {
1774     if (data)
1775         m_printDialogData = (*data);
1776
1777     Init(printout, printoutForPrinting);
1778 }
1779
1780 wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout,
1781                                        wxPrintout *printoutForPrinting,
1782                                        wxPrintDialogData *data)
1783 {
1784     if (data)
1785         m_printDialogData = (*data);
1786
1787     Init(printout, printoutForPrinting);
1788 }
1789
1790 void wxPrintPreviewBase::Init(wxPrintout *printout,
1791                               wxPrintout *printoutForPrinting)
1792 {
1793     m_isOk = true;
1794     m_previewPrintout = printout;
1795     if (m_previewPrintout)
1796         m_previewPrintout->SetPreview(static_cast<wxPrintPreview *>(this));
1797
1798     m_printPrintout = printoutForPrinting;
1799
1800     m_previewCanvas = NULL;
1801     m_previewFrame = NULL;
1802     m_previewBitmap = NULL;
1803     m_previewFailed = false;
1804     m_currentPage = 1;
1805     m_currentZoom = 70;
1806     m_topMargin =
1807     m_leftMargin = 2*wxSizerFlags::GetDefaultBorder();
1808     m_pageWidth = 0;
1809     m_pageHeight = 0;
1810     m_printingPrepared = false;
1811     m_minPage = 1;
1812     m_maxPage = 1;
1813 }
1814
1815 wxPrintPreviewBase::~wxPrintPreviewBase()
1816 {
1817     if (m_previewPrintout)
1818         delete m_previewPrintout;
1819     if (m_previewBitmap)
1820         delete m_previewBitmap;
1821     if (m_printPrintout)
1822         delete m_printPrintout;
1823 }
1824
1825 bool wxPrintPreviewBase::SetCurrentPage(int pageNum)
1826 {
1827     if (m_currentPage == pageNum)
1828         return true;
1829
1830     m_currentPage = pageNum;
1831
1832     InvalidatePreviewBitmap();
1833
1834     if (m_previewCanvas)
1835     {
1836         AdjustScrollbars(m_previewCanvas);
1837
1838         m_previewCanvas->Refresh();
1839         m_previewCanvas->SetFocus();
1840     }
1841     return true;
1842 }
1843
1844 int wxPrintPreviewBase::GetCurrentPage() const
1845     { return m_currentPage; }
1846 void wxPrintPreviewBase::SetPrintout(wxPrintout *printout)
1847     { m_previewPrintout = printout; }
1848 wxPrintout *wxPrintPreviewBase::GetPrintout() const
1849     { return m_previewPrintout; }
1850 wxPrintout *wxPrintPreviewBase::GetPrintoutForPrinting() const
1851     { return m_printPrintout; }
1852 void wxPrintPreviewBase::SetFrame(wxFrame *frame)
1853     { m_previewFrame = frame; }
1854 void wxPrintPreviewBase::SetCanvas(wxPreviewCanvas *canvas)
1855     { m_previewCanvas = canvas; }
1856 wxFrame *wxPrintPreviewBase::GetFrame() const
1857     { return m_previewFrame; }
1858 wxPreviewCanvas *wxPrintPreviewBase::GetCanvas() const
1859     { return m_previewCanvas; }
1860
1861 void wxPrintPreviewBase::CalcRects(wxPreviewCanvas *canvas, wxRect& pageRect, wxRect& paperRect)
1862 {
1863     // Calculate the rectangles for the printable area of the page and the
1864     // entire paper as they appear on the canvas on-screen.
1865     int canvasWidth, canvasHeight;
1866     canvas->GetSize(&canvasWidth, &canvasHeight);
1867
1868     float zoomScale = float(m_currentZoom) / 100;
1869     float screenPrintableWidth = zoomScale * m_pageWidth * m_previewScaleX;
1870     float screenPrintableHeight = zoomScale * m_pageHeight * m_previewScaleY;
1871
1872     wxRect devicePaperRect = m_previewPrintout->GetPaperRectPixels();
1873     wxCoord devicePrintableWidth, devicePrintableHeight;
1874     m_previewPrintout->GetPageSizePixels(&devicePrintableWidth, &devicePrintableHeight);
1875     float scaleX = screenPrintableWidth / devicePrintableWidth;
1876     float scaleY = screenPrintableHeight / devicePrintableHeight;
1877     paperRect.width = wxCoord(scaleX * devicePaperRect.width);
1878     paperRect.height = wxCoord(scaleY * devicePaperRect.height);
1879
1880     paperRect.x = wxCoord((canvasWidth - paperRect.width)/ 2.0);
1881     if (paperRect.x < m_leftMargin)
1882         paperRect.x = m_leftMargin;
1883     paperRect.y = wxCoord((canvasHeight - paperRect.height)/ 2.0);
1884     if (paperRect.y < m_topMargin)
1885         paperRect.y = m_topMargin;
1886
1887     pageRect.x = paperRect.x - wxCoord(scaleX * devicePaperRect.x);
1888     pageRect.y = paperRect.y - wxCoord(scaleY * devicePaperRect.y);
1889     pageRect.width = wxCoord(screenPrintableWidth);
1890     pageRect.height = wxCoord(screenPrintableHeight);
1891 }
1892
1893
1894 void wxPrintPreviewBase::InvalidatePreviewBitmap()
1895 {
1896     wxDELETE(m_previewBitmap);
1897     // if there was a problem with rendering the preview, try again now
1898     // that it changed in some way (less memory may be needed, for example):
1899     m_previewFailed = false;
1900 }
1901
1902 bool wxPrintPreviewBase::UpdatePageRendering()
1903 {
1904     if ( m_previewBitmap )
1905         return false;
1906
1907     if ( m_previewFailed )
1908         return false;
1909
1910     if ( !RenderPage(m_currentPage) )
1911     {
1912         m_previewFailed = true; // don't waste time failing again
1913         return false;
1914     }
1915
1916     return true;
1917 }
1918
1919 bool wxPrintPreviewBase::PaintPage(wxPreviewCanvas *canvas, wxDC& dc)
1920 {
1921     DrawBlankPage(canvas, dc);
1922
1923     if (!m_previewBitmap)
1924         return false;
1925     if (!canvas)
1926         return false;
1927
1928     wxRect pageRect, paperRect;
1929     CalcRects(canvas, pageRect, paperRect);
1930     wxMemoryDC temp_dc;
1931     temp_dc.SelectObject(*m_previewBitmap);
1932
1933     dc.Blit(pageRect.x, pageRect.y,
1934         m_previewBitmap->GetWidth(), m_previewBitmap->GetHeight(), &temp_dc, 0, 0);
1935
1936     temp_dc.SelectObject(wxNullBitmap);
1937     return true;
1938 }
1939
1940 // Adjusts the scrollbars for the current scale
1941 void wxPrintPreviewBase::AdjustScrollbars(wxPreviewCanvas *canvas)
1942 {
1943     if (!canvas)
1944         return ;
1945
1946     wxRect pageRect, paperRect;
1947     CalcRects(canvas, pageRect, paperRect);
1948      int totalWidth = paperRect.width + 2 * m_leftMargin;
1949     int totalHeight = paperRect.height + 2 * m_topMargin;
1950     int scrollUnitsX = totalWidth / 10;
1951     int scrollUnitsY = totalHeight / 10;
1952     wxSize virtualSize = canvas->GetVirtualSize();
1953     if (virtualSize.GetWidth() != totalWidth || virtualSize.GetHeight() != totalHeight)
1954         canvas->SetScrollbars(10, 10, scrollUnitsX, scrollUnitsY, 0, 0, true);
1955 }
1956
1957 bool wxPrintPreviewBase::RenderPageIntoDC(wxDC& dc, int pageNum)
1958 {
1959     m_previewPrintout->SetDC(&dc);
1960     m_previewPrintout->SetPageSizePixels(m_pageWidth, m_pageHeight);
1961
1962     // Need to delay OnPreparePrinting() until here, so we have enough
1963     // information and a wxDC.
1964     if (!m_printingPrepared)
1965     {
1966         m_printingPrepared = true;
1967
1968         m_previewPrintout->OnPreparePrinting();
1969         int selFrom, selTo;
1970         m_previewPrintout->GetPageInfo(&m_minPage, &m_maxPage, &selFrom, &selTo);
1971
1972         // Update the wxPreviewControlBar page range display.
1973         if ( m_previewFrame )
1974         {
1975             wxPreviewControlBar * const
1976                 controlBar = ((wxPreviewFrame*)m_previewFrame)->GetControlBar();
1977             if ( controlBar )
1978                 controlBar->SetPageInfo(m_minPage, m_maxPage);
1979         }
1980     }
1981
1982     m_previewPrintout->OnBeginPrinting();
1983
1984     if (!m_previewPrintout->OnBeginDocument(m_printDialogData.GetFromPage(), m_printDialogData.GetToPage()))
1985     {
1986         wxMessageBox(_("Could not start document preview."), _("Print Preview Failure"), wxOK);
1987         return false;
1988     }
1989
1990     m_previewPrintout->OnPrintPage(pageNum);
1991     m_previewPrintout->OnEndDocument();
1992     m_previewPrintout->OnEndPrinting();
1993
1994     m_previewPrintout->SetDC(NULL);
1995
1996     return true;
1997 }
1998
1999 bool wxPrintPreviewBase::RenderPageIntoBitmap(wxBitmap& bmp, int pageNum)
2000 {
2001     wxMemoryDC memoryDC;
2002     memoryDC.SelectObject(bmp);
2003     memoryDC.Clear();
2004
2005     return RenderPageIntoDC(memoryDC, pageNum);
2006 }
2007
2008 bool wxPrintPreviewBase::RenderPage(int pageNum)
2009 {
2010     wxBusyCursor busy;
2011
2012     if (!m_previewCanvas)
2013     {
2014         wxFAIL_MSG(wxT("wxPrintPreviewBase::RenderPage: must use wxPrintPreviewBase::SetCanvas to let me know about the canvas!"));
2015         return false;
2016     }
2017
2018     wxRect pageRect, paperRect;
2019     CalcRects(m_previewCanvas, pageRect, paperRect);
2020
2021     if (!m_previewBitmap)
2022     {
2023         m_previewBitmap = new wxBitmap(pageRect.width, pageRect.height);
2024
2025         if (!m_previewBitmap || !m_previewBitmap->IsOk())
2026         {
2027             InvalidatePreviewBitmap();
2028             wxMessageBox(_("Sorry, not enough memory to create a preview."), _("Print Preview Failure"), wxOK);
2029             return false;
2030         }
2031     }
2032
2033     if ( !RenderPageIntoBitmap(*m_previewBitmap, pageNum) )
2034     {
2035         InvalidatePreviewBitmap();
2036         wxMessageBox(_("Sorry, not enough memory to create a preview."), _("Print Preview Failure"), wxOK);
2037         return false;
2038     }
2039
2040 #if wxUSE_STATUSBAR
2041     wxString status;
2042     if (m_maxPage != 0)
2043         status = wxString::Format(_("Page %d of %d"), pageNum, m_maxPage);
2044     else
2045         status = wxString::Format(_("Page %d"), pageNum);
2046
2047     if (m_previewFrame)
2048         m_previewFrame->SetStatusText(status);
2049 #endif
2050
2051     return true;
2052 }
2053
2054 bool wxPrintPreviewBase::DrawBlankPage(wxPreviewCanvas *canvas, wxDC& dc)
2055 {
2056     wxRect pageRect, paperRect;
2057
2058     CalcRects(canvas, pageRect, paperRect);
2059
2060     // Draw shadow, allowing for 1-pixel border AROUND the actual paper
2061     wxCoord shadowOffset = 4;
2062
2063     dc.SetPen(*wxBLACK_PEN);
2064     dc.SetBrush(*wxBLACK_BRUSH);
2065     dc.DrawRectangle(paperRect.x + shadowOffset, paperRect.y + paperRect.height + 1,
2066         paperRect.width, shadowOffset);
2067
2068     dc.DrawRectangle(paperRect.x + paperRect.width, paperRect.y + shadowOffset,
2069         shadowOffset, paperRect.height);
2070
2071     // Draw blank page allowing for 1-pixel border AROUND the actual paper
2072     dc.SetPen(*wxBLACK_PEN);
2073     dc.SetBrush(*wxWHITE_BRUSH);
2074     dc.DrawRectangle(paperRect.x - 2, paperRect.y - 1,
2075         paperRect.width + 3, paperRect.height + 2);
2076
2077     return true;
2078 }
2079
2080 void wxPrintPreviewBase::SetZoom(int percent)
2081 {
2082     if (m_currentZoom == percent)
2083         return;
2084
2085     m_currentZoom = percent;
2086
2087     InvalidatePreviewBitmap();
2088
2089     if (m_previewCanvas)
2090     {
2091         AdjustScrollbars(m_previewCanvas);
2092         ((wxScrolledWindow *) m_previewCanvas)->Scroll(0, 0);
2093         m_previewCanvas->ClearBackground();
2094         m_previewCanvas->Refresh();
2095         m_previewCanvas->SetFocus();
2096     }
2097 }
2098
2099 wxPrintDialogData& wxPrintPreviewBase::GetPrintDialogData()
2100 {
2101     return m_printDialogData;
2102 }
2103
2104 int wxPrintPreviewBase::GetZoom() const
2105 { return m_currentZoom; }
2106 int wxPrintPreviewBase::GetMaxPage() const
2107 { return m_maxPage; }
2108 int wxPrintPreviewBase::GetMinPage() const
2109 { return m_minPage; }
2110 bool wxPrintPreviewBase::IsOk() const
2111 { return m_isOk; }
2112 void wxPrintPreviewBase::SetOk(bool ok)
2113 { m_isOk = ok; }
2114
2115 //----------------------------------------------------------------------------
2116 // wxPrintPreview
2117 //----------------------------------------------------------------------------
2118
2119 IMPLEMENT_CLASS(wxPrintPreview, wxPrintPreviewBase)
2120
2121 wxPrintPreview::wxPrintPreview(wxPrintout *printout,
2122                    wxPrintout *printoutForPrinting,
2123                    wxPrintDialogData *data) :
2124     wxPrintPreviewBase( printout, printoutForPrinting, data )
2125 {
2126     m_pimpl = wxPrintFactory::GetFactory()->
2127         CreatePrintPreview( printout, printoutForPrinting, data );
2128 }
2129
2130 wxPrintPreview::wxPrintPreview(wxPrintout *printout,
2131                    wxPrintout *printoutForPrinting,
2132                    wxPrintData *data ) :
2133     wxPrintPreviewBase( printout, printoutForPrinting, data )
2134 {
2135     m_pimpl = wxPrintFactory::GetFactory()->
2136         CreatePrintPreview( printout, printoutForPrinting, data );
2137 }
2138
2139 wxPrintPreview::~wxPrintPreview()
2140 {
2141     delete m_pimpl;
2142
2143     // don't delete twice
2144     m_printPrintout = NULL;
2145     m_previewPrintout = NULL;
2146     m_previewBitmap = NULL;
2147 }
2148
2149 bool wxPrintPreview::SetCurrentPage(int pageNum)
2150 {
2151     return m_pimpl->SetCurrentPage( pageNum );
2152 }
2153
2154 int wxPrintPreview::GetCurrentPage() const
2155 {
2156     return m_pimpl->GetCurrentPage();
2157 }
2158
2159 void wxPrintPreview::SetPrintout(wxPrintout *printout)
2160 {
2161     m_pimpl->SetPrintout( printout );
2162 }
2163
2164 wxPrintout *wxPrintPreview::GetPrintout() const
2165 {
2166     return m_pimpl->GetPrintout();
2167 }
2168
2169 wxPrintout *wxPrintPreview::GetPrintoutForPrinting() const
2170 {
2171     return m_pimpl->GetPrintoutForPrinting();
2172 }
2173
2174 void wxPrintPreview::SetFrame(wxFrame *frame)
2175 {
2176     m_pimpl->SetFrame( frame );
2177 }
2178
2179 void wxPrintPreview::SetCanvas(wxPreviewCanvas *canvas)
2180 {
2181     m_pimpl->SetCanvas( canvas );
2182 }
2183
2184 wxFrame *wxPrintPreview::GetFrame() const
2185 {
2186     return m_pimpl->GetFrame();
2187 }
2188
2189 wxPreviewCanvas *wxPrintPreview::GetCanvas() const
2190 {
2191     return m_pimpl->GetCanvas();
2192 }
2193
2194 bool wxPrintPreview::PaintPage(wxPreviewCanvas *canvas, wxDC& dc)
2195 {
2196     return m_pimpl->PaintPage( canvas, dc );
2197 }
2198
2199 bool wxPrintPreview::UpdatePageRendering()
2200 {
2201     return m_pimpl->UpdatePageRendering();
2202 }
2203
2204 bool wxPrintPreview::DrawBlankPage(wxPreviewCanvas *canvas, wxDC& dc)
2205 {
2206     return m_pimpl->DrawBlankPage( canvas, dc );
2207 }
2208
2209 void wxPrintPreview::AdjustScrollbars(wxPreviewCanvas *canvas)
2210 {
2211     m_pimpl->AdjustScrollbars( canvas );
2212 }
2213
2214 bool wxPrintPreview::RenderPage(int pageNum)
2215 {
2216     return m_pimpl->RenderPage( pageNum );
2217 }
2218
2219 void wxPrintPreview::SetZoom(int percent)
2220 {
2221     m_pimpl->SetZoom( percent );
2222 }
2223
2224 int wxPrintPreview::GetZoom() const
2225 {
2226     return m_pimpl->GetZoom();
2227 }
2228
2229 wxPrintDialogData& wxPrintPreview::GetPrintDialogData()
2230 {
2231     return m_pimpl->GetPrintDialogData();
2232 }
2233
2234 int wxPrintPreview::GetMaxPage() const
2235 {
2236     return m_pimpl->GetMaxPage();
2237 }
2238
2239 int wxPrintPreview::GetMinPage() const
2240 {
2241     return m_pimpl->GetMinPage();
2242 }
2243
2244 bool wxPrintPreview::IsOk() const
2245 {
2246     return m_pimpl->IsOk();
2247 }
2248
2249 void wxPrintPreview::SetOk(bool ok)
2250 {
2251     m_pimpl->SetOk( ok );
2252 }
2253
2254 bool wxPrintPreview::Print(bool interactive)
2255 {
2256     return m_pimpl->Print( interactive );
2257 }
2258
2259 void wxPrintPreview::DetermineScaling()
2260 {
2261     m_pimpl->DetermineScaling();
2262 }
2263
2264 #endif // wxUSE_PRINTING_ARCHITECTURE