src/common/prntbase.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "prntbase.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #include "wx/defs.h"
  24
  25 #if wxUSE_PRINTING_ARCHITECTURE
  26
  27 #ifndef WX_PRECOMP
  28 #include "wx/utils.h"
  29 #include "wx/dc.h"
  30 #include "wx/app.h"
  31 #include "wx/msgdlg.h"
  32 #include "wx/layout.h"
  33 #include "wx/choice.h"
  34 #include "wx/button.h"
  35 #include "wx/settings.h"
  36 #include "wx/dcmemory.h"
  37 #include "wx/stattext.h"
  38 #include "wx/intl.h"
  39 #include "wx/textdlg.h"
  40 #include "wx/sizer.h"
  41 #endif // !WX_PRECOMP
  42
  43 #include "wx/prntbase.h"
  44 #include "wx/dcprint.h"
  45 #include "wx/printdlg.h"
  46 #include "wx/module.h"
  47
  48 #include <stdlib.h>
  49 #include <string.h>
  50
  51 #ifdef __WXMSW__
  52     #include "wx/msw/private.h"
  53     #include <commdlg.h>
  54
  55     #ifndef __WIN32__
  56         #include <print.h>
  57     #endif
  58 #endif // __WXMSW__
  59
  60 IMPLEMENT_CLASS(wxPrinterBase, wxObject)
  61 IMPLEMENT_ABSTRACT_CLASS(wxPrintout, wxObject)
  62 IMPLEMENT_CLASS(wxPreviewCanvas, wxWindow)
  63 IMPLEMENT_CLASS(wxPreviewControlBar, wxWindow)
  64 IMPLEMENT_CLASS(wxPreviewFrame, wxFrame)
  65 IMPLEMENT_CLASS(wxPrintPreviewBase, wxObject)
  66
  67 BEGIN_EVENT_TABLE(wxPrintAbortDialog, wxDialog)
  68     EVT_BUTTON(wxID_CANCEL, wxPrintAbortDialog::OnCancel)
  69 END_EVENT_TABLE()
  70
  71 BEGIN_EVENT_TABLE(wxPreviewCanvas, wxScrolledWindow)
  72     EVT_PAINT(wxPreviewCanvas::OnPaint)
  73     EVT_CHAR(wxPreviewCanvas::OnChar)
  74     EVT_SYS_COLOUR_CHANGED(wxPreviewCanvas::OnSysColourChanged)
  75 END_EVENT_TABLE()
  76
  77 /*
  78 * Printer
  79 */
  80
  81 wxPrinterBase::wxPrinterBase(wxPrintDialogData *data)
  82 {
  83     m_currentPrintout = (wxPrintout *) NULL;
  84     sm_abortWindow = (wxWindow *) NULL;
  85     sm_abortIt = false;
  86     if (data)
  87         m_printDialogData = (*data);
  88     sm_lastError = wxPRINTER_NO_ERROR;
  89 }
  90
  91 wxWindow *wxPrinterBase::sm_abortWindow = (wxWindow *) NULL;
  92 bool wxPrinterBase::sm_abortIt = false;
  93 wxPrinterError wxPrinterBase::sm_lastError = wxPRINTER_NO_ERROR;
  94
  95 wxPrinterBase::~wxPrinterBase()
  96 {
  97 }
  98
  99 void wxPrintAbortDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
 100 {
 101     wxPrinterBase::sm_abortIt = true;
 102     wxPrinterBase::sm_abortWindow->Show(false);
 103     wxPrinterBase::sm_abortWindow->Close(true);
 104     wxPrinterBase::sm_abortWindow = (wxWindow *) NULL;
 105 }
 106
 107 wxWindow *wxPrinterBase::CreateAbortWindow(wxWindow *parent, wxPrintout * printout)
 108 {
 109     wxPrintAbortDialog *dialog = new wxPrintAbortDialog(parent, _("Printing ") , wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE);
 110
 111     wxBoxSizer *button_sizer = new wxBoxSizer( wxVERTICAL );
 112     button_sizer->Add( new wxStaticText(dialog, wxID_ANY, _("Please wait while printing\n") + printout->GetTitle() ), 0, wxALL, 10 );
 113     button_sizer->Add( new wxButton( dialog, wxID_CANCEL, wxT("Cancel") ), 0, wxALL | wxALIGN_CENTER, 10 );
 114
 115     dialog->SetAutoLayout( true );
 116     dialog->SetSizer( button_sizer );
 117
 118     button_sizer->Fit(dialog);
 119     button_sizer->SetSizeHints (dialog) ;
 120
 121     return dialog;
 122 }
 123
 124 void wxPrinterBase::ReportError(wxWindow *parent, wxPrintout *WXUNUSED(printout), const wxString& message)
 125 {
 126     wxMessageBox(message, _("Printing Error"), wxOK, parent);
 127 }
 128
 129 /*
 130 * Printout class
 131 */
 132
 133 wxPrintout::wxPrintout(const wxString& title)
 134 {
 135     m_printoutTitle = title ;
 136     m_printoutDC = (wxDC *) NULL;
 137     m_pageWidthMM = 0;
 138     m_pageHeightMM = 0;
 139     m_pageWidthPixels = 0;
 140     m_pageHeightPixels = 0;
 141     m_PPIScreenX = 0;
 142     m_PPIScreenY = 0;
 143     m_PPIPrinterX = 0;
 144     m_PPIPrinterY = 0;
 145     m_isPreview = false;
 146 }
 147
 148 wxPrintout::~wxPrintout()
 149 {
 150 }
 151
 152 bool wxPrintout::OnBeginDocument(int WXUNUSED(startPage), int WXUNUSED(endPage))
 153 {
 154     return GetDC()->StartDoc(_("Printing ") + m_printoutTitle);
 155 }
 156
 157 void wxPrintout::OnEndDocument()
 158 {
 159     GetDC()->EndDoc();
 160 }
 161
 162 void wxPrintout::OnBeginPrinting()
 163 {
 164 }
 165
 166 void wxPrintout::OnEndPrinting()
 167 {
 168 }
 169
 170 bool wxPrintout::HasPage(int page)
 171 {
 172     return (page == 1);
 173 }
 174
 175 void wxPrintout::GetPageInfo(int *minPage, int *maxPage, int *fromPage, int *toPage)
 176 {
 177     *minPage = 1;
 178     *maxPage = 32000;
 179     *fromPage = 1;
 180     *toPage = 1;
 181 }
 182
 183 /*
 184 * Preview canvas
 185 */
 186
 187 // VZ: the current code doesn't refresh properly without
 188 //     wxFULL_REPAINT_ON_RESIZE, this must be fixed as otherwise we have
 189 //     really horrible flicker when resizing the preview frame, but without
 190 //     this style it simply doesn't work correctly at all...
 191 wxPreviewCanvas::wxPreviewCanvas(wxPrintPreviewBase *preview, wxWindow *parent,
 192                                  const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 193 wxScrolledWindow(parent, wxID_ANY, pos, size, style | wxFULL_REPAINT_ON_RESIZE, name)
 194 {
 195     m_printPreview = preview;
 196 #ifdef __WXMAC__
 197     // The app workspace colour is always white, but we should have
 198     // a contrast with the page.
 199     wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW;
 200 #else
 201     wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE;
 202 #endif
 203     SetBackgroundColour(wxSystemSettings::GetColour(colourIndex));
 204
 205     SetScrollbars(10, 10, 100, 100);
 206 }
 207
 208 wxPreviewCanvas::~wxPreviewCanvas()
 209 {
 210 }
 211
 212 void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
 213 {
 214     wxPaintDC dc(this);
 215     PrepareDC( dc );
 216
 217 /*
 218 #ifdef __WXGTK__
 219     if (!GetUpdateRegion().IsEmpty())
 220         dc.SetClippingRegion( GetUpdateRegion() );
 221 #endif
 222 */
 223
 224     if (m_printPreview)
 225     {
 226         m_printPreview->PaintPage(this, dc);
 227     }
 228 }
 229
 230 // Responds to colour changes, and passes event on to children.
 231 void wxPreviewCanvas::OnSysColourChanged(wxSysColourChangedEvent& event)
 232 {
 233 #ifdef __WXMAC__
 234     // The app workspace colour is always white, but we should have
 235     // a contrast with the page.
 236     wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW;
 237 #else
 238     wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE;
 239 #endif
 240     SetBackgroundColour(wxSystemSettings::GetColour(colourIndex));
 241     Refresh();
 242
 243     // Propagate the event to the non-top-level children
 244     wxWindow::OnSysColourChanged(event);
 245 }
 246
 247 void wxPreviewCanvas::OnChar(wxKeyEvent &event)
 248 {
 249     wxPreviewControlBar* controlBar = ((wxPreviewFrame*) GetParent())->GetControlBar();
 250     if (event.GetKeyCode() == WXK_ESCAPE)
 251     {
 252         ((wxPreviewFrame*) GetParent())->Close(true);
 253         return;
 254     }
 255     else if (event.GetKeyCode() == WXK_TAB)
 256     {
 257         controlBar->OnGoto();
 258         return;
 259     }
 260     else if (event.GetKeyCode() == WXK_RETURN)
 261     {
 262         controlBar->OnPrint();
 263         return;
 264     }
 265
 266     if (!event.ControlDown())
 267     {
 268         event.Skip();
 269         return;
 270     }
 271
 272     switch(event.GetKeyCode())
 273     {
 274         case WXK_NEXT:
 275             controlBar->OnNext(); break;
 276         case WXK_PRIOR:
 277             controlBar->OnPrevious(); break;
 278         case WXK_HOME:
 279             controlBar->OnFirst(); break;
 280         case WXK_END:
 281             controlBar->OnLast(); break;
 282         default:
 283             event.Skip();
 284     }
 285 }
 286
 287 /*
 288 * Preview control bar
 289 */
 290
 291 BEGIN_EVENT_TABLE(wxPreviewControlBar, wxPanel)
 292     EVT_BUTTON(wxID_PREVIEW_CLOSE,    wxPreviewControlBar::OnWindowClose)
 293     EVT_BUTTON(wxID_PREVIEW_PRINT,    wxPreviewControlBar::OnPrintButton)
 294     EVT_BUTTON(wxID_PREVIEW_PREVIOUS, wxPreviewControlBar::OnPreviousButton)
 295     EVT_BUTTON(wxID_PREVIEW_NEXT,     wxPreviewControlBar::OnNextButton)
 296     EVT_BUTTON(wxID_PREVIEW_FIRST,    wxPreviewControlBar::OnFirstButton)
 297     EVT_BUTTON(wxID_PREVIEW_LAST,     wxPreviewControlBar::OnLastButton)
 298     EVT_BUTTON(wxID_PREVIEW_GOTO,     wxPreviewControlBar::OnGotoButton)
 299     EVT_CHOICE(wxID_PREVIEW_ZOOM,     wxPreviewControlBar::OnZoom)
 300     EVT_PAINT(wxPreviewControlBar::OnPaint)
 301 END_EVENT_TABLE()
 302
 303 wxPreviewControlBar::wxPreviewControlBar(wxPrintPreviewBase *preview, long buttons,
 304                                          wxWindow *parent, const wxPoint& pos, const wxSize& size,
 305                                          long style, const wxString& name):
 306 wxPanel(parent, wxID_ANY, pos, size, style, name)
 307 {
 308     m_printPreview = preview;
 309     m_closeButton = (wxButton *) NULL;
 310     m_nextPageButton = (wxButton *) NULL;
 311     m_previousPageButton = (wxButton *) NULL;
 312     m_printButton = (wxButton *) NULL;
 313     m_zoomControl = (wxChoice *) NULL;
 314     m_buttonFlags = buttons;
 315 }
 316
 317 wxPreviewControlBar::~wxPreviewControlBar()
 318 {
 319 }
 320
 321 void wxPreviewControlBar::OnPaint(wxPaintEvent& WXUNUSED(event))
 322 {
 323     wxPaintDC dc(this);
 324
 325     int w, h;
 326     GetSize(&w, &h);
 327     dc.SetPen(*wxBLACK_PEN);
 328     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 329     dc.DrawLine( 0, h-1, w, h-1 );
 330 }
 331
 332 void wxPreviewControlBar::OnWindowClose(wxCommandEvent& WXUNUSED(event))
 333 {
 334     wxPreviewFrame *frame = (wxPreviewFrame *)GetParent();
 335     frame->Close(true);
 336 }
 337
 338 void wxPreviewControlBar::OnPrint(void)
 339 {
 340     wxPrintPreviewBase *preview = GetPrintPreview();
 341     preview->Print(true);
 342 }
 343
 344 void wxPreviewControlBar::OnNext(void)
 345 {
 346     wxPrintPreviewBase *preview = GetPrintPreview();
 347     if (preview)
 348     {
 349         int currentPage = preview->GetCurrentPage();
 350         if ((preview->GetMaxPage() > 0) &&
 351             (currentPage < preview->GetMaxPage()) &&
 352             preview->GetPrintout()->HasPage(currentPage + 1))
 353         {
 354             preview->SetCurrentPage(currentPage + 1);
 355         }
 356     }
 357 }
 358
 359 void wxPreviewControlBar::OnPrevious(void)
 360 {
 361     wxPrintPreviewBase *preview = GetPrintPreview();
 362     if (preview)
 363     {
 364         int currentPage = preview->GetCurrentPage();
 365         if ((preview->GetMinPage() > 0) &&
 366             (currentPage > preview->GetMinPage()) &&
 367             preview->GetPrintout()->HasPage(currentPage - 1))
 368         {
 369             preview->SetCurrentPage(currentPage - 1);
 370         }
 371     }
 372 }
 373
 374 void wxPreviewControlBar::OnFirst(void)
 375 {
 376     wxPrintPreviewBase *preview = GetPrintPreview();
 377     if (preview)
 378     {
 379         int currentPage = preview->GetMinPage();
 380         if (preview->GetPrintout()->HasPage(currentPage))
 381         {
 382             preview->SetCurrentPage(currentPage);
 383         }
 384     }
 385 }
 386
 387 void wxPreviewControlBar::OnLast(void)
 388 {
 389     wxPrintPreviewBase *preview = GetPrintPreview();
 390     if (preview)
 391     {
 392         int currentPage = preview->GetMaxPage();
 393         if (preview->GetPrintout()->HasPage(currentPage))
 394         {
 395             preview->SetCurrentPage(currentPage);
 396         }
 397     }
 398 }
 399
 400 void wxPreviewControlBar::OnGoto(void)
 401 {
 402     wxPrintPreviewBase *preview = GetPrintPreview();
 403     if (preview)
 404     {
 405         long currentPage;
 406
 407         if (preview->GetMinPage() > 0)
 408         {
 409             wxString strPrompt;
 410             wxString strPage;
 411
 412             strPrompt.Printf( _("Enter a page number between %d and %d:"),
 413                 preview->GetMinPage(), preview->GetMaxPage());
 414             strPage.Printf( wxT("%d"), preview->GetCurrentPage() );
 415
 416             strPage =
 417                 wxGetTextFromUser( strPrompt, _("Goto Page"), strPage, GetParent());
 418
 419             if ( strPage.ToLong( &currentPage ) )
 420                 if (preview->GetPrintout()->HasPage(currentPage))
 421                 {
 422                     preview->SetCurrentPage(currentPage);
 423                 }
 424         }
 425     }
 426 }
 427
 428 void wxPreviewControlBar::OnZoom(wxCommandEvent& WXUNUSED(event))
 429 {
 430     int zoom = GetZoomControl();
 431     if (GetPrintPreview())
 432         GetPrintPreview()->SetZoom(zoom);
 433 }
 434
 435 void wxPreviewControlBar::CreateButtons()
 436 {
 437     SetSize(0, 0, 400, 40);
 438
 439     wxBoxSizer *item0 = new wxBoxSizer( wxHORIZONTAL );
 440
 441     m_closeButton = new wxButton( this, wxID_PREVIEW_CLOSE, _("&Close"), wxDefaultPosition, wxDefaultSize, 0 );
 442     item0->Add( m_closeButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 443
 444     if (m_buttonFlags & wxPREVIEW_PRINT)
 445     {
 446         m_printButton = new wxButton( this, wxID_PREVIEW_PRINT, _("&Print..."), wxDefaultPosition, wxDefaultSize, 0 );
 447         item0->Add( m_printButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 448     }
 449
 450     if (m_buttonFlags & wxPREVIEW_FIRST)
 451     {
 452         m_firstPageButton = new wxButton( this, wxID_PREVIEW_FIRST, _("|<<"), wxDefaultPosition, wxDefaultSize, wxBU_EXACTFIT );
 453         item0->Add( m_firstPageButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 454     }
 455
 456     if (m_buttonFlags & wxPREVIEW_PREVIOUS)
 457     {
 458         m_previousPageButton = new wxButton( this, wxID_PREVIEW_PREVIOUS, _("<<"), wxDefaultPosition, wxDefaultSize, wxBU_EXACTFIT );
 459         item0->Add( m_previousPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 );
 460     }
 461
 462     if (m_buttonFlags & wxPREVIEW_NEXT)
 463     {
 464         m_nextPageButton = new wxButton( this, wxID_PREVIEW_NEXT, _(">>"), wxDefaultPosition, wxDefaultSize, wxBU_EXACTFIT );
 465         item0->Add( m_nextPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 );
 466     }
 467
 468     if (m_buttonFlags & wxPREVIEW_LAST)
 469     {
 470         m_lastPageButton = new wxButton( this, wxID_PREVIEW_LAST, _(">>|"), wxDefaultPosition, wxDefaultSize, wxBU_EXACTFIT );
 471         item0->Add( m_lastPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 );
 472     }
 473
 474     if (m_buttonFlags & wxPREVIEW_GOTO)
 475     {
 476         m_gotoPageButton = new wxButton( this, wxID_PREVIEW_GOTO, _("&Goto..."), wxDefaultPosition, wxDefaultSize, 0 );
 477         item0->Add( m_gotoPageButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 478     }
 479
 480     if (m_buttonFlags & wxPREVIEW_ZOOM)
 481     {
 482         wxString choices[] =
 483         {
 484             wxT("10%"), wxT("15%"), wxT("20%"), wxT("25%"), wxT("30%"), wxT("35%"), wxT("40%"), wxT("45%"), wxT("50%"), wxT("55%"),
 485                 wxT("60%"), wxT("65%"), wxT("70%"), wxT("75%"), wxT("80%"), wxT("85%"), wxT("90%"), wxT("95%"), wxT("100%"), wxT("110%"),
 486                 wxT("120%"), wxT("150%"), wxT("200%")
 487         };
 488         int n = WXSIZEOF(choices);
 489
 490         m_zoomControl = new wxChoice( this, wxID_PREVIEW_ZOOM, wxDefaultPosition, wxSize(70,wxDefaultCoord), n, choices, 0 );
 491         item0->Add( m_zoomControl, 0, wxALIGN_CENTRE|wxALL, 5 );
 492         SetZoomControl(m_printPreview->GetZoom());
 493     }
 494
 495     SetSizer(item0);
 496     item0->Fit(this);
 497 }
 498
 499 void wxPreviewControlBar::SetZoomControl(int zoom)
 500 {
 501     if (m_zoomControl)
 502     {
 503         int n, count = m_zoomControl->GetCount();
 504         long val;
 505         for (n=0; n<count; n++)
 506         {
 507             if (m_zoomControl->GetString(n).BeforeFirst(wxT('%')).ToLong(&val) &&
 508                 (val >= long(zoom)))
 509             {
 510                 m_zoomControl->SetSelection(n);
 511                 return;
 512             }
 513         }
 514
 515         m_zoomControl->SetSelection(count-1);
 516     }
 517 }
 518
 519 int wxPreviewControlBar::GetZoomControl()
 520 {
 521     if (m_zoomControl && (m_zoomControl->GetStringSelection() != wxEmptyString))
 522     {
 523         long val;
 524         if (m_zoomControl->GetStringSelection().BeforeFirst(wxT('%')).ToLong(&val))
 525             return int(val);
 526     }
 527
 528     return 0;
 529 }
 530
 531
 532 /*
 533 * Preview frame
 534 */
 535
 536 BEGIN_EVENT_TABLE(wxPreviewFrame, wxFrame)
 537     EVT_CLOSE(wxPreviewFrame::OnCloseWindow)
 538 END_EVENT_TABLE()
 539
 540 wxPreviewFrame::wxPreviewFrame(wxPrintPreviewBase *preview, wxWindow *parent, const wxString& title,
 541                                const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 542 wxFrame(parent, wxID_ANY, title, pos, size, style, name)
 543 {
 544     m_printPreview = preview;
 545     m_controlBar = NULL;
 546     m_previewCanvas = NULL;
 547     m_windowDisabler = NULL;
 548
 549     // Give the application icon
 550 #ifdef __WXMSW__
 551     wxFrame* topFrame = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 552     if (topFrame)
 553         SetIcon(topFrame->GetIcon());
 554 #endif
 555 }
 556
 557 wxPreviewFrame::~wxPreviewFrame()
 558 {
 559 }
 560
 561 void wxPreviewFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 562 {
 563     if (m_windowDisabler)
 564         delete m_windowDisabler;
 565
 566     // Need to delete the printout and the print preview
 567     wxPrintout *printout = m_printPreview->GetPrintout();
 568     if (printout)
 569     {
 570         delete printout;
 571         m_printPreview->SetPrintout(NULL);
 572         m_printPreview->SetCanvas(NULL);
 573         m_printPreview->SetFrame(NULL);
 574     }
 575     delete m_printPreview;
 576
 577     Destroy();
 578 }
 579
 580 void wxPreviewFrame::Initialize()
 581 {
 582 #if wxUSE_STATUSBAR
 583     CreateStatusBar();
 584 #endif
 585     CreateCanvas();
 586     CreateControlBar();
 587
 588     m_printPreview->SetCanvas(m_previewCanvas);
 589     m_printPreview->SetFrame(this);
 590
 591     wxBoxSizer *item0 = new wxBoxSizer( wxVERTICAL );
 592
 593     item0->Add( m_controlBar, 0, wxGROW|wxALIGN_CENTER_VERTICAL, 5 );
 594     item0->Add( m_previewCanvas, 1, wxGROW|wxALIGN_CENTER_VERTICAL, 5 );
 595
 596     SetAutoLayout( true );
 597     SetSizer( item0 );
 598
 599     m_windowDisabler = new wxWindowDisabler(this);
 600
 601     Layout();
 602
 603     m_printPreview->AdjustScrollbars(m_previewCanvas);
 604     m_previewCanvas->SetFocus();
 605     m_controlBar->SetFocus();
 606 }
 607
 608 void wxPreviewFrame::CreateCanvas()
 609 {
 610     m_previewCanvas = new wxPreviewCanvas(m_printPreview, this);
 611 }
 612
 613 void wxPreviewFrame::CreateControlBar()
 614 {
 615     long buttons = wxPREVIEW_DEFAULT;
 616     if (m_printPreview->GetPrintoutForPrinting())
 617         buttons |= wxPREVIEW_PRINT;
 618
 619     m_controlBar = new wxPreviewControlBar(m_printPreview, buttons, this, wxPoint(0, 0), wxSize(400, 40));
 620     m_controlBar->CreateButtons();
 621 }
 622
 623 /*
 624 * Print preview
 625 */
 626
 627 wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout,
 628                                        wxPrintout *printoutForPrinting,
 629                                        wxPrintData *data)
 630 {
 631     if (data)
 632         m_printDialogData = (*data);
 633
 634     Init(printout, printoutForPrinting);
 635 }
 636
 637 wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout,
 638                                        wxPrintout *printoutForPrinting,
 639                                        wxPrintDialogData *data)
 640 {
 641     if (data)
 642         m_printDialogData = (*data);
 643
 644     Init(printout, printoutForPrinting);
 645 }
 646
 647 void wxPrintPreviewBase::Init(wxPrintout *printout,
 648                               wxPrintout *printoutForPrinting)
 649 {
 650     m_isOk = true;
 651     m_previewPrintout = printout;
 652     if (m_previewPrintout)
 653         m_previewPrintout->SetIsPreview(true);
 654
 655     m_printPrintout = printoutForPrinting;
 656
 657     m_previewCanvas = NULL;
 658     m_previewFrame = NULL;
 659     m_previewBitmap = NULL;
 660     m_currentPage = 1;
 661     m_currentZoom = 70;
 662     m_topMargin = 40;
 663     m_leftMargin = 40;
 664     m_pageWidth = 0;
 665     m_pageHeight = 0;
 666     m_printingPrepared = false;
 667     m_minPage = 1;
 668     m_maxPage = 1;
 669 }
 670
 671 wxPrintPreviewBase::~wxPrintPreviewBase()
 672 {
 673     if (m_previewPrintout)
 674         delete m_previewPrintout;
 675     if (m_previewBitmap)
 676         delete m_previewBitmap;
 677     if (m_printPrintout)
 678         delete m_printPrintout;
 679 }
 680
 681 bool wxPrintPreviewBase::SetCurrentPage(int pageNum)
 682 {
 683     if (m_currentPage == pageNum)
 684         return true;
 685
 686     m_currentPage = pageNum;
 687     if (m_previewBitmap)
 688     {
 689         delete m_previewBitmap;
 690         m_previewBitmap = NULL;
 691     }
 692
 693     if (m_previewCanvas)
 694     {
 695         AdjustScrollbars(m_previewCanvas);
 696
 697         if (!RenderPage(pageNum))
 698             return false;
 699         m_previewCanvas->Refresh();
 700         m_previewCanvas->SetFocus();
 701     }
 702     return true;
 703 }
 704
 705 bool wxPrintPreviewBase::PaintPage(wxPreviewCanvas *canvas, wxDC& dc)
 706 {
 707     DrawBlankPage(canvas, dc);
 708
 709     if (!m_previewBitmap)
 710         if (!RenderPage(m_currentPage))
 711             return false;
 712
 713     if (!m_previewBitmap)
 714         return false;
 715
 716     if (!canvas)
 717         return false;
 718
 719     int canvasWidth, canvasHeight;
 720     canvas->GetSize(&canvasWidth, &canvasHeight);
 721
 722     double zoomScale = ((float)m_currentZoom/(float)100);
 723     double actualWidth = (zoomScale*m_pageWidth*m_previewScale);
 724     //  float actualHeight = (float)(zoomScale*m_pageHeight*m_previewScale);
 725
 726     int x = (int) ((canvasWidth - actualWidth)/2.0);
 727     if (x < m_leftMargin)
 728         x = m_leftMargin;
 729     int y = m_topMargin;
 730
 731     wxMemoryDC temp_dc;
 732     temp_dc.SelectObject(*m_previewBitmap);
 733
 734     dc.Blit(x, y, m_previewBitmap->GetWidth(), m_previewBitmap->GetHeight(), &temp_dc, 0, 0);
 735
 736     temp_dc.SelectObject(wxNullBitmap);
 737
 738     return true;
 739 }
 740
 741 // Adjusts the scrollbars for the current scale
 742 void wxPrintPreviewBase::AdjustScrollbars(wxPreviewCanvas *canvas)
 743 {
 744     if (!canvas)
 745         return ;
 746
 747     int canvasWidth, canvasHeight;
 748     canvas->GetSize(&canvasWidth, &canvasHeight);
 749
 750     double zoomScale = ((float)m_currentZoom/(float)100);
 751     double actualWidth = (zoomScale*m_pageWidth*m_previewScale);
 752     double actualHeight = (zoomScale*m_pageHeight*m_previewScale);
 753
 754     // Set the scrollbars appropriately
 755     int totalWidth = (int)(actualWidth + 2*m_leftMargin);
 756     int totalHeight = (int)(actualHeight + 2*m_topMargin);
 757     int scrollUnitsX = totalWidth/10;
 758     int scrollUnitsY = totalHeight/10;
 759     wxSize virtualSize = canvas->GetVirtualSize();
 760     if (virtualSize.GetWidth() != totalWidth || virtualSize.GetHeight() != totalHeight)
 761         canvas->SetScrollbars(10, 10, scrollUnitsX, scrollUnitsY, 0, 0, true);
 762 }
 763
 764 bool wxPrintPreviewBase::RenderPage(int pageNum)
 765 {
 766     wxBusyCursor busy;
 767
 768     int canvasWidth, canvasHeight;
 769
 770     if (!m_previewCanvas)
 771     {
 772         wxFAIL_MSG(_T("wxPrintPreviewBase::RenderPage: must use wxPrintPreviewBase::SetCanvas to let me know about the canvas!"));
 773
 774         return false;
 775     }
 776     m_previewCanvas->GetSize(&canvasWidth, &canvasHeight);
 777
 778     double zoomScale = (m_currentZoom/100.0);
 779     int actualWidth = (int)(zoomScale*m_pageWidth*m_previewScale);
 780     int actualHeight = (int)(zoomScale*m_pageHeight*m_previewScale);
 781
 782     if (!m_previewBitmap)
 783     {
 784         m_previewBitmap = new wxBitmap((int)actualWidth, (int)actualHeight);
 785         if (!m_previewBitmap || !m_previewBitmap->Ok())
 786         {
 787             if (m_previewBitmap) {
 788                 delete m_previewBitmap;
 789                 m_previewBitmap = NULL;
 790             }
 791             wxMessageBox(_("Sorry, not enough memory to create a preview."), _("Print Preview Failure"), wxOK);
 792             return false;
 793         }
 794     }
 795
 796     wxMemoryDC memoryDC;
 797     memoryDC.SelectObject(*m_previewBitmap);
 798
 799     memoryDC.Clear();
 800
 801     m_previewPrintout->SetDC(&memoryDC);
 802     m_previewPrintout->SetPageSizePixels(m_pageWidth, m_pageHeight);
 803
 804     // Need to delay OnPreparePrinting until here, so we have enough information.
 805     if (!m_printingPrepared)
 806     {
 807         m_previewPrintout->OnPreparePrinting();
 808         int selFrom, selTo;
 809         m_previewPrintout->GetPageInfo(&m_minPage, &m_maxPage, &selFrom, &selTo);
 810         m_printingPrepared = true;
 811     }
 812
 813     m_previewPrintout->OnBeginPrinting();
 814
 815     if (!m_previewPrintout->OnBeginDocument(m_printDialogData.GetFromPage(), m_printDialogData.GetToPage()))
 816     {
 817         wxMessageBox(_("Could not start document preview."), _("Print Preview Failure"), wxOK);
 818
 819         memoryDC.SelectObject(wxNullBitmap);
 820
 821         delete m_previewBitmap;
 822         m_previewBitmap = NULL;
 823         return false;
 824     }
 825
 826     m_previewPrintout->OnPrintPage(pageNum);
 827     m_previewPrintout->OnEndDocument();
 828     m_previewPrintout->OnEndPrinting();
 829
 830     m_previewPrintout->SetDC(NULL);
 831
 832     memoryDC.SelectObject(wxNullBitmap);
 833
 834 #if wxUSE_STATUSBAR
 835     wxString status;
 836     if (m_maxPage != 0)
 837         status = wxString::Format(_("Page %d of %d"), pageNum, m_maxPage);
 838     else
 839         status = wxString::Format(_("Page %d"), pageNum);
 840
 841     if (m_previewFrame)
 842         m_previewFrame->SetStatusText(status);
 843 #endif
 844
 845     return true;
 846 }
 847
 848
 849 bool wxPrintPreviewBase::DrawBlankPage(wxPreviewCanvas *canvas, wxDC& dc)
 850 {
 851     int canvasWidth, canvasHeight;
 852     canvas->GetSize(&canvasWidth, &canvasHeight);
 853
 854     float zoomScale = (float)((float)m_currentZoom/(float)100);
 855     float actualWidth = zoomScale*m_pageWidth*m_previewScale;
 856     float actualHeight = zoomScale*m_pageHeight*m_previewScale;
 857
 858     float x = (float)((canvasWidth - actualWidth)/2.0);
 859     if (x < m_leftMargin)
 860         x = (float)m_leftMargin;
 861     float y = (float)m_topMargin;
 862
 863     // Draw shadow, allowing for 1-pixel border AROUND the actual page
 864     int shadowOffset = 4;
 865     dc.SetPen(*wxBLACK_PEN);
 866     dc.SetBrush(*wxBLACK_BRUSH);
 867     /*
 868     dc.DrawRectangle((int)(x-1 + shadowOffset), (int)(y-1 + shadowOffset), (int)(actualWidth+2), (int)(actualHeight+2));
 869     */
 870     dc.DrawRectangle((int)(x + shadowOffset), (int)(y + actualHeight+1), (int)(actualWidth), shadowOffset);
 871     dc.DrawRectangle((int)(x + actualWidth), (int)(y + shadowOffset), shadowOffset, (int)(actualHeight));
 872
 873     // Draw blank page allowing for 1-pixel border AROUND the actual page
 874     dc.SetPen(*wxBLACK_PEN);
 875     dc.SetBrush(*wxWHITE_BRUSH);
 876
 877     /*
 878     wxRegion update_region = canvas->GetUpdateRegion();
 879     wxRect r = update_region.GetBox();
 880
 881       printf( "x: %d y: %d w: %d h: %d.\n", (int)r.x, (int)r.y, (int)r.width, (int)r.height );
 882     */
 883
 884     dc.DrawRectangle((int)(x-2), (int)(y-1), (int)(actualWidth+3), (int)(actualHeight+2));
 885
 886     return true;
 887 }
 888
 889 void wxPrintPreviewBase::SetZoom(int percent)
 890 {
 891     if (m_currentZoom == percent)
 892         return;
 893
 894     m_currentZoom = percent;
 895     if (m_previewBitmap)
 896     {
 897         delete m_previewBitmap;
 898         m_previewBitmap = NULL;
 899     }
 900
 901     if (m_previewCanvas)
 902     {
 903         AdjustScrollbars(m_previewCanvas);
 904         RenderPage(m_currentPage);
 905         ((wxScrolledWindow *) m_previewCanvas)->Scroll(0, 0);
 906         m_previewCanvas->ClearBackground();
 907         m_previewCanvas->Refresh();
 908         m_previewCanvas->SetFocus();
 909     }
 910 }
 911
 912 #endif // wxUSE_PRINTING_ARCHITECTURE