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 #ifdef __GNUG__
  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, -1, _("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 wxPreviewCanvas::wxPreviewCanvas(wxPrintPreviewBase *preview, wxWindow *parent,
 188                                  const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 189 wxScrolledWindow(parent, -1, pos, size, style, name)
 190 {
 191     m_printPreview = preview;
 192 #ifdef __WXMAC__
 193     // The app workspace colour is always white, but we should have
 194     // a contrast with the page.
 195     wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW;
 196 #else
 197     wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE;
 198 #endif
 199     SetBackgroundColour(wxSystemSettings::GetColour(colourIndex));
 200
 201     SetScrollbars(10, 10, 100, 100);
 202 }
 203
 204 wxPreviewCanvas::~wxPreviewCanvas()
 205 {
 206 }
 207
 208 void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
 209 {
 210     wxPaintDC dc(this);
 211     PrepareDC( dc );
 212
 213 /*
 214 #ifdef __WXGTK__
 215     if (!GetUpdateRegion().IsEmpty())
 216         dc.SetClippingRegion( GetUpdateRegion() );
 217 #endif
 218 */
 219
 220     if (m_printPreview)
 221     {
 222         m_printPreview->PaintPage(this, dc);
 223     }
 224 }
 225
 226 // Responds to colour changes, and passes event on to children.
 227 void wxPreviewCanvas::OnSysColourChanged(wxSysColourChangedEvent& event)
 228 {
 229 #ifdef __WXMAC__
 230     // The app workspace colour is always white, but we should have
 231     // a contrast with the page.
 232     wxSystemColour colourIndex = wxSYS_COLOUR_3DDKSHADOW;
 233 #else
 234     wxSystemColour colourIndex = wxSYS_COLOUR_APPWORKSPACE;
 235 #endif
 236     SetBackgroundColour(wxSystemSettings::GetColour(colourIndex));
 237     Refresh();
 238
 239     // Propagate the event to the non-top-level children
 240     wxWindow::OnSysColourChanged(event);
 241 }
 242
 243 void wxPreviewCanvas::OnChar(wxKeyEvent &event)
 244 {
 245     if (event.GetKeyCode() == WXK_ESCAPE)
 246     {
 247         ((wxPreviewFrame*) GetParent())->Close(TRUE);
 248         return;
 249     }
 250
 251     if (!event.ControlDown())
 252     {
 253         event.Skip();
 254         return;
 255     }
 256
 257     wxPreviewControlBar* controlBar = ((wxPreviewFrame*) GetParent())->GetControlBar();
 258    switch(event.GetKeyCode())
 259    {
 260    case WXK_NEXT:
 261       controlBar->OnNext(); break;
 262    case WXK_PRIOR:
 263       controlBar->OnPrevious(); break;
 264    case WXK_HOME:
 265       controlBar->OnFirst(); break;
 266    case WXK_END:
 267       controlBar->OnLast(); break;
 268    case WXK_TAB:
 269       controlBar->OnGoto(); break;
 270    default:
 271       event.Skip();
 272    }
 273 }
 274
 275 /*
 276 * Preview control bar
 277 */
 278
 279 BEGIN_EVENT_TABLE(wxPreviewControlBar, wxPanel)
 280     EVT_BUTTON(wxID_PREVIEW_CLOSE,    wxPreviewControlBar::OnWindowClose)
 281     EVT_BUTTON(wxID_PREVIEW_PRINT,    wxPreviewControlBar::OnPrint)
 282     EVT_BUTTON(wxID_PREVIEW_PREVIOUS, wxPreviewControlBar::OnPreviousButton)
 283     EVT_BUTTON(wxID_PREVIEW_NEXT,     wxPreviewControlBar::OnNextButton)
 284     EVT_BUTTON(wxID_PREVIEW_FIRST,    wxPreviewControlBar::OnFirstButton)
 285     EVT_BUTTON(wxID_PREVIEW_LAST,     wxPreviewControlBar::OnLastButton)
 286     EVT_BUTTON(wxID_PREVIEW_GOTO,     wxPreviewControlBar::OnGotoButton)
 287     EVT_CHOICE(wxID_PREVIEW_ZOOM,     wxPreviewControlBar::OnZoom)
 288     EVT_PAINT(wxPreviewControlBar::OnPaint)
 289 END_EVENT_TABLE()
 290
 291 wxPreviewControlBar::wxPreviewControlBar(wxPrintPreviewBase *preview, long buttons,
 292                                          wxWindow *parent, const wxPoint& pos, const wxSize& size,
 293                                          long style, const wxString& name):
 294 wxPanel(parent, -1, pos, size, style, name)
 295 {
 296     m_printPreview = preview;
 297     m_closeButton = (wxButton *) NULL;
 298     m_nextPageButton = (wxButton *) NULL;
 299     m_previousPageButton = (wxButton *) NULL;
 300     m_printButton = (wxButton *) NULL;
 301     m_zoomControl = (wxChoice *) NULL;
 302     m_buttonFlags = buttons;
 303 }
 304
 305 wxPreviewControlBar::~wxPreviewControlBar()
 306 {
 307 }
 308
 309 void wxPreviewControlBar::OnPaint(wxPaintEvent& WXUNUSED(event))
 310 {
 311     wxPaintDC dc(this);
 312
 313     int w, h;
 314     GetSize(&w, &h);
 315     dc.SetPen(*wxBLACK_PEN);
 316     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 317     dc.DrawLine( 0, h-1, w, h-1 );
 318 }
 319
 320 void wxPreviewControlBar::OnWindowClose(wxCommandEvent& WXUNUSED(event))
 321 {
 322     wxPreviewFrame *frame = (wxPreviewFrame *)GetParent();
 323     frame->Close(TRUE);
 324 }
 325
 326 void wxPreviewControlBar::OnPrint(wxCommandEvent& WXUNUSED(event))
 327 {
 328     wxPrintPreviewBase *preview = GetPrintPreview();
 329     preview->Print(TRUE);
 330 }
 331
 332 void wxPreviewControlBar::OnNext(void)
 333 {
 334     wxPrintPreviewBase *preview = GetPrintPreview();
 335     if (preview)
 336     {
 337         int currentPage = preview->GetCurrentPage();
 338         if ((preview->GetMaxPage() > 0) &&
 339             (currentPage < preview->GetMaxPage()) &&
 340             preview->GetPrintout()->HasPage(currentPage + 1))
 341         {
 342             preview->SetCurrentPage(currentPage + 1);
 343         }
 344     }
 345 }
 346
 347 void wxPreviewControlBar::OnPrevious(void)
 348 {
 349     wxPrintPreviewBase *preview = GetPrintPreview();
 350     if (preview)
 351     {
 352         int currentPage = preview->GetCurrentPage();
 353         if ((preview->GetMinPage() > 0) &&
 354             (currentPage > preview->GetMinPage()) &&
 355             preview->GetPrintout()->HasPage(currentPage - 1))
 356         {
 357             preview->SetCurrentPage(currentPage - 1);
 358         }
 359     }
 360 }
 361
 362 void wxPreviewControlBar::OnFirst(void)
 363 {
 364     wxPrintPreviewBase *preview = GetPrintPreview();
 365     if (preview)
 366     {
 367         int currentPage = preview->GetMinPage();
 368         if (preview->GetPrintout()->HasPage(currentPage))
 369         {
 370             preview->SetCurrentPage(currentPage);
 371         }
 372     }
 373 }
 374
 375 void wxPreviewControlBar::OnLast(void)
 376 {
 377     wxPrintPreviewBase *preview = GetPrintPreview();
 378     if (preview)
 379     {
 380         int currentPage = preview->GetMaxPage();
 381         if (preview->GetPrintout()->HasPage(currentPage))
 382         {
 383             preview->SetCurrentPage(currentPage);
 384         }
 385     }
 386 }
 387
 388 void wxPreviewControlBar::OnGoto(void)
 389 {
 390     wxPrintPreviewBase *preview = GetPrintPreview();
 391     if (preview)
 392     {
 393         long currentPage;
 394
 395         if (preview->GetMinPage() > 0)
 396         {
 397             wxString strPrompt;
 398             wxString strPage;
 399
 400             strPrompt.Printf( _("Enter a page number between %d and %d:"),
 401                 preview->GetMinPage(), preview->GetMaxPage());
 402             strPage.Printf( wxT("%d"), preview->GetCurrentPage() );
 403
 404             strPage =
 405                 wxGetTextFromUser( strPrompt, _("Goto Page"), strPage, GetParent());
 406
 407             if ( strPage.ToLong( &currentPage ) )
 408                 if (preview->GetPrintout()->HasPage(currentPage))
 409                 {
 410                     preview->SetCurrentPage(currentPage);
 411                 }
 412         }
 413     }
 414 }
 415
 416 void wxPreviewControlBar::OnZoom(wxCommandEvent& WXUNUSED(event))
 417 {
 418     int zoom = GetZoomControl();
 419     if (GetPrintPreview())
 420         GetPrintPreview()->SetZoom(zoom);
 421 }
 422
 423 void wxPreviewControlBar::CreateButtons()
 424 {
 425     SetSize(0, 0, 400, 40);
 426
 427     wxBoxSizer *item0 = new wxBoxSizer( wxHORIZONTAL );
 428
 429     int smallButtonWidth = 45;
 430
 431     m_closeButton = new wxButton( this, wxID_PREVIEW_CLOSE, _("&Close"), wxDefaultPosition, wxDefaultSize, 0 );
 432     item0->Add( m_closeButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 433
 434     if (m_buttonFlags & wxPREVIEW_PRINT)
 435     {
 436         m_printButton = new wxButton( this, wxID_PREVIEW_PRINT, _("&Print..."), wxDefaultPosition, wxDefaultSize, 0 );
 437         item0->Add( m_printButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 438     }
 439
 440     if (m_buttonFlags & wxPREVIEW_FIRST)
 441     {
 442         m_firstPageButton = new wxButton( this, wxID_PREVIEW_FIRST, _("|<<"), wxDefaultPosition, wxSize(smallButtonWidth,-1), 0 );
 443         item0->Add( m_firstPageButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 444     }
 445
 446     if (m_buttonFlags & wxPREVIEW_PREVIOUS)
 447     {
 448         m_previousPageButton = new wxButton( this, wxID_PREVIEW_PREVIOUS, _("<<"), wxDefaultPosition, wxSize(smallButtonWidth,-1), 0 );
 449         item0->Add( m_previousPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 );
 450     }
 451
 452     if (m_buttonFlags & wxPREVIEW_NEXT)
 453     {
 454         m_nextPageButton = new wxButton( this, wxID_PREVIEW_NEXT, _(">>"), wxDefaultPosition, wxSize(smallButtonWidth,-1), 0 );
 455         item0->Add( m_nextPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 );
 456     }
 457
 458     if (m_buttonFlags & wxPREVIEW_LAST)
 459     {
 460         m_lastPageButton = new wxButton( this, wxID_PREVIEW_LAST, _(">>|"), wxDefaultPosition, wxSize(smallButtonWidth,-1), 0 );
 461         item0->Add( m_lastPageButton, 0, wxALIGN_CENTRE|wxRIGHT|wxTOP|wxBOTTOM, 5 );
 462     }
 463
 464     if (m_buttonFlags & wxPREVIEW_GOTO)
 465     {
 466         m_gotoPageButton = new wxButton( this, wxID_PREVIEW_GOTO, _("&Goto..."), wxDefaultPosition, wxDefaultSize, 0 );
 467         item0->Add( m_gotoPageButton, 0, wxALIGN_CENTRE|wxALL, 5 );
 468     }
 469
 470     if (m_buttonFlags & wxPREVIEW_ZOOM)
 471     {
 472         wxString choices[] =
 473         {
 474             wxT("10%"), wxT("15%"), wxT("20%"), wxT("25%"), wxT("30%"), wxT("35%"), wxT("40%"), wxT("45%"), wxT("50%"), wxT("55%"),
 475                 wxT("60%"), wxT("65%"), wxT("70%"), wxT("75%"), wxT("80%"), wxT("85%"), wxT("90%"), wxT("95%"), wxT("100%"), wxT("110%"),
 476                 wxT("120%"), wxT("150%"), wxT("200%")
 477         };
 478         int n = WXSIZEOF(choices);
 479
 480         m_zoomControl = new wxChoice( this, wxID_PREVIEW_ZOOM, wxDefaultPosition, wxSize(70,-1), n, choices, 0 );
 481         item0->Add( m_zoomControl, 0, wxALIGN_CENTRE|wxALL, 5 );
 482         SetZoomControl(m_printPreview->GetZoom());
 483     }
 484
 485     SetSizer(item0);
 486     item0->Fit(this);
 487 }
 488
 489 void wxPreviewControlBar::SetZoomControl(int zoom)
 490 {
 491     wxChar buf[20];
 492     wxSprintf( buf, wxT("%d%%"), zoom );
 493
 494     if (m_zoomControl)
 495         m_zoomControl->SetStringSelection(buf);
 496 }
 497
 498 int wxPreviewControlBar::GetZoomControl()
 499 {
 500     wxChar buf[20];
 501     if (m_zoomControl && (m_zoomControl->GetStringSelection() != wxT("")))
 502     {
 503         wxStrcpy(buf, m_zoomControl->GetStringSelection());
 504         buf[wxStrlen(buf) - 1] = 0;
 505         return (int)wxAtoi(buf);
 506     }
 507     else return 0;
 508 }
 509
 510
 511 /*
 512 * Preview frame
 513 */
 514
 515 BEGIN_EVENT_TABLE(wxPreviewFrame, wxFrame)
 516     EVT_CLOSE(wxPreviewFrame::OnCloseWindow)
 517 END_EVENT_TABLE()
 518
 519 wxPreviewFrame::wxPreviewFrame(wxPrintPreviewBase *preview, wxWindow *parent, const wxString& title,
 520                                const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 521 wxFrame(parent, -1, title, pos, size, style, name)
 522 {
 523     m_printPreview = preview;
 524     m_controlBar = NULL;
 525     m_previewCanvas = NULL;
 526
 527     // Give the application icon
 528 #ifdef __WXMSW__
 529     wxFrame* topFrame = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
 530     if (topFrame)
 531         SetIcon(topFrame->GetIcon());
 532 #endif
 533 }
 534
 535 wxPreviewFrame::~wxPreviewFrame()
 536 {
 537 }
 538
 539 void wxPreviewFrame::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 540 {
 541     // MakeModal doesn't work on wxMac, especially when there
 542     // are multiple top-level windows.
 543 #ifndef __WXMAC__
 544     MakeModal(FALSE);
 545 #endif
 546
 547     // Need to delete the printout and the print preview
 548     wxPrintout *printout = m_printPreview->GetPrintout();
 549     if (printout)
 550     {
 551         delete printout;
 552         m_printPreview->SetPrintout(NULL);
 553         m_printPreview->SetCanvas(NULL);
 554         m_printPreview->SetFrame(NULL);
 555     }
 556     delete m_printPreview;
 557
 558     Destroy();
 559 }
 560
 561 void wxPreviewFrame::Initialize()
 562 {
 563 #if wxUSE_STATUSBAR
 564     CreateStatusBar();
 565 #endif
 566     CreateCanvas();
 567     CreateControlBar();
 568
 569     m_printPreview->SetCanvas(m_previewCanvas);
 570     m_printPreview->SetFrame(this);
 571
 572     wxBoxSizer *item0 = new wxBoxSizer( wxVERTICAL );
 573
 574     item0->Add( m_controlBar, 0, wxGROW|wxALIGN_CENTER_VERTICAL, 5 );
 575     item0->Add( m_previewCanvas, 1, wxGROW|wxALIGN_CENTER_VERTICAL, 5 );
 576
 577     SetAutoLayout( TRUE );
 578     SetSizer( item0 );
 579
 580     // MakeModal doesn't work on wxMac, especially when there
 581     // are multiple top-level windows.
 582 #ifndef __WXMAC__
 583     MakeModal(TRUE);
 584 #endif
 585
 586     Layout();
 587
 588     m_printPreview->AdjustScrollbars(m_previewCanvas);
 589     m_previewCanvas->SetFocus();
 590     m_controlBar->SetFocus();
 591 }
 592
 593 void wxPreviewFrame::CreateCanvas()
 594 {
 595     m_previewCanvas = new wxPreviewCanvas(m_printPreview, this);
 596 }
 597
 598 void wxPreviewFrame::CreateControlBar()
 599 {
 600     long buttons = wxPREVIEW_DEFAULT;
 601     if (m_printPreview->GetPrintoutForPrinting())
 602         buttons |= wxPREVIEW_PRINT;
 603
 604     m_controlBar = new wxPreviewControlBar(m_printPreview, buttons, this, wxPoint(0, 0), wxSize(400, 40));
 605     m_controlBar->CreateButtons();
 606 }
 607
 608 /*
 609 * Print preview
 610 */
 611
 612 wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout,
 613                                        wxPrintout *printoutForPrinting,
 614                                        wxPrintData *data)
 615 {
 616     if (data)
 617         m_printDialogData = (*data);
 618
 619     Init(printout, printoutForPrinting);
 620 }
 621
 622 wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout,
 623                                        wxPrintout *printoutForPrinting,
 624                                        wxPrintDialogData *data)
 625 {
 626     if (data)
 627         m_printDialogData = (*data);
 628
 629     Init(printout, printoutForPrinting);
 630 }
 631
 632 void wxPrintPreviewBase::Init(wxPrintout *printout,
 633                               wxPrintout *printoutForPrinting)
 634 {
 635     m_isOk = TRUE;
 636     m_previewPrintout = printout;
 637     if (m_previewPrintout)
 638         m_previewPrintout->SetIsPreview(TRUE);
 639
 640     m_printPrintout = printoutForPrinting;
 641
 642     m_previewCanvas = NULL;
 643     m_previewFrame = NULL;
 644     m_previewBitmap = NULL;
 645     m_currentPage = 1;
 646     m_currentZoom = 70;
 647     m_topMargin = 40;
 648     m_leftMargin = 40;
 649     m_pageWidth = 0;
 650     m_pageHeight = 0;
 651     m_printingPrepared = FALSE;
 652     m_minPage = 1;
 653     m_maxPage = 1;
 654 }
 655
 656 wxPrintPreviewBase::~wxPrintPreviewBase()
 657 {
 658     if (m_previewPrintout)
 659         delete m_previewPrintout;
 660     if (m_previewBitmap)
 661         delete m_previewBitmap;
 662     if (m_printPrintout)
 663         delete m_printPrintout;
 664 }
 665
 666 bool wxPrintPreviewBase::SetCurrentPage(int pageNum)
 667 {
 668     if (m_currentPage == pageNum)
 669         return TRUE;
 670
 671     m_currentPage = pageNum;
 672     if (m_previewBitmap)
 673     {
 674         delete m_previewBitmap;
 675         m_previewBitmap = NULL;
 676     }
 677
 678     if (m_previewCanvas)
 679     {
 680         AdjustScrollbars(m_previewCanvas);
 681
 682         if (!RenderPage(pageNum))
 683             return FALSE;
 684         m_previewCanvas->Refresh();
 685         m_previewCanvas->SetFocus();
 686     }
 687     return TRUE;
 688 }
 689
 690 bool wxPrintPreviewBase::PaintPage(wxPreviewCanvas *canvas, wxDC& dc)
 691 {
 692     DrawBlankPage(canvas, dc);
 693
 694     if (!m_previewBitmap)
 695         if (!RenderPage(m_currentPage))
 696             return FALSE;
 697
 698     if (!m_previewBitmap)
 699         return FALSE;
 700
 701     if (!canvas)
 702         return FALSE;
 703
 704     int canvasWidth, canvasHeight;
 705     canvas->GetSize(&canvasWidth, &canvasHeight);
 706
 707     double zoomScale = ((float)m_currentZoom/(float)100);
 708     double actualWidth = (zoomScale*m_pageWidth*m_previewScale);
 709     //  float actualHeight = (float)(zoomScale*m_pageHeight*m_previewScale);
 710
 711     int x = (int) ((canvasWidth - actualWidth)/2.0);
 712     if (x < m_leftMargin)
 713         x = m_leftMargin;
 714     int y = m_topMargin;
 715
 716     wxMemoryDC temp_dc;
 717     temp_dc.SelectObject(*m_previewBitmap);
 718
 719     dc.Blit(x, y, m_previewBitmap->GetWidth(), m_previewBitmap->GetHeight(), &temp_dc, 0, 0);
 720
 721     temp_dc.SelectObject(wxNullBitmap);
 722
 723     return TRUE;
 724 }
 725
 726 // Adjusts the scrollbars for the current scale
 727 void wxPrintPreviewBase::AdjustScrollbars(wxPreviewCanvas *canvas)
 728 {
 729     if (!canvas)
 730         return ;
 731
 732     int canvasWidth, canvasHeight;
 733     canvas->GetSize(&canvasWidth, &canvasHeight);
 734
 735     double zoomScale = ((float)m_currentZoom/(float)100);
 736     double actualWidth = (zoomScale*m_pageWidth*m_previewScale);
 737     double actualHeight = (zoomScale*m_pageHeight*m_previewScale);
 738
 739     // Set the scrollbars appropriately
 740     int totalWidth = actualWidth + 2*m_leftMargin;
 741     int totalHeight = actualHeight + 2*m_topMargin;
 742     int scrollUnitsX = totalWidth/10;
 743     int scrollUnitsY = totalHeight/10;
 744     wxSize virtualSize = canvas->GetVirtualSize();
 745     if (virtualSize.GetWidth() != totalWidth || virtualSize.GetHeight() != totalHeight)
 746         canvas->SetScrollbars(10, 10, scrollUnitsX, scrollUnitsY, 0, 0, TRUE);
 747 }
 748
 749 bool wxPrintPreviewBase::RenderPage(int pageNum)
 750 {
 751     wxBusyCursor busy;
 752
 753     int canvasWidth, canvasHeight;
 754
 755     if (!m_previewCanvas)
 756     {
 757         wxFAIL_MSG(_T("wxPrintPreviewBase::RenderPage: must use wxPrintPreviewBase::SetCanvas to let me know about the canvas!"));
 758
 759         return FALSE;
 760     }
 761     m_previewCanvas->GetSize(&canvasWidth, &canvasHeight);
 762
 763     double zoomScale = (m_currentZoom/100.0);
 764     int actualWidth = (int)(zoomScale*m_pageWidth*m_previewScale);
 765     int actualHeight = (int)(zoomScale*m_pageHeight*m_previewScale);
 766
 767     int x = (int)((canvasWidth - actualWidth)/2.0);
 768     if (x < m_leftMargin)
 769         x = m_leftMargin;
 770     //  int y = m_topMargin;
 771
 772
 773     if (!m_previewBitmap)
 774     {
 775         m_previewBitmap = new wxBitmap((int)actualWidth, (int)actualHeight);
 776         if (!m_previewBitmap || !m_previewBitmap->Ok())
 777         {
 778             if (m_previewBitmap) {
 779                 delete m_previewBitmap;
 780                 m_previewBitmap = NULL;
 781             }
 782             wxMessageBox(_("Sorry, not enough memory to create a preview."), _("Print Preview Failure"), wxOK);
 783             return FALSE;
 784         }
 785     }
 786
 787     wxMemoryDC memoryDC;
 788     memoryDC.SelectObject(*m_previewBitmap);
 789
 790     memoryDC.Clear();
 791
 792     m_previewPrintout->SetDC(&memoryDC);
 793     m_previewPrintout->SetPageSizePixels(m_pageWidth, m_pageHeight);
 794
 795     // Need to delay OnPreparePrinting until here, so we have enough information.
 796     if (!m_printingPrepared)
 797     {
 798         m_previewPrintout->OnPreparePrinting();
 799         int selFrom, selTo;
 800         m_previewPrintout->GetPageInfo(&m_minPage, &m_maxPage, &selFrom, &selTo);
 801         m_printingPrepared = TRUE;
 802     }
 803
 804     m_previewPrintout->OnBeginPrinting();
 805
 806     if (!m_previewPrintout->OnBeginDocument(m_printDialogData.GetFromPage(), m_printDialogData.GetToPage()))
 807     {
 808         wxMessageBox(_("Could not start document preview."), _("Print Preview Failure"), wxOK);
 809
 810         memoryDC.SelectObject(wxNullBitmap);
 811
 812         delete m_previewBitmap;
 813         m_previewBitmap = NULL;
 814         return FALSE;
 815     }
 816
 817     m_previewPrintout->OnPrintPage(pageNum);
 818     m_previewPrintout->OnEndDocument();
 819     m_previewPrintout->OnEndPrinting();
 820
 821     m_previewPrintout->SetDC(NULL);
 822
 823     memoryDC.SelectObject(wxNullBitmap);
 824
 825 #if wxUSE_STATUSBAR
 826     wxString status;
 827     if (m_maxPage != 0)
 828                 status = wxString::Format(_("Page %d of %d"), pageNum, m_maxPage);
 829     else
 830                 status = wxString::Format(_("Page %d"), pageNum);
 831
 832     if (m_previewFrame)
 833         m_previewFrame->SetStatusText(status);
 834 #endif
 835
 836     return TRUE;
 837 }
 838
 839
 840 bool wxPrintPreviewBase::DrawBlankPage(wxPreviewCanvas *canvas, wxDC& dc)
 841 {
 842     int canvasWidth, canvasHeight;
 843     canvas->GetSize(&canvasWidth, &canvasHeight);
 844
 845     float zoomScale = (float)((float)m_currentZoom/(float)100);
 846     float actualWidth = zoomScale*m_pageWidth*m_previewScale;
 847     float actualHeight = zoomScale*m_pageHeight*m_previewScale;
 848
 849     float x = (float)((canvasWidth - actualWidth)/2.0);
 850     if (x < m_leftMargin)
 851         x = (float)m_leftMargin;
 852     float y = (float)m_topMargin;
 853
 854     // Draw shadow, allowing for 1-pixel border AROUND the actual page
 855     int shadowOffset = 4;
 856     dc.SetPen(*wxBLACK_PEN);
 857     dc.SetBrush(*wxBLACK_BRUSH);
 858     /*
 859     dc.DrawRectangle((int)(x-1 + shadowOffset), (int)(y-1 + shadowOffset), (int)(actualWidth+2), (int)(actualHeight+2));
 860     */
 861     dc.DrawRectangle((int)(x + shadowOffset), (int)(y + actualHeight+1), (int)(actualWidth), shadowOffset);
 862     dc.DrawRectangle((int)(x + actualWidth), (int)(y + shadowOffset), shadowOffset, (int)(actualHeight));
 863
 864     // Draw blank page allowing for 1-pixel border AROUND the actual page
 865     dc.SetPen(*wxBLACK_PEN);
 866     dc.SetBrush(*wxWHITE_BRUSH);
 867
 868     /*
 869     wxRegion update_region = canvas->GetUpdateRegion();
 870     wxRect r = update_region.GetBox();
 871
 872       printf( "x: %d y: %d w: %d h: %d.\n", (int)r.x, (int)r.y, (int)r.width, (int)r.height );
 873     */
 874
 875     dc.DrawRectangle((int)(x-2), (int)(y-1), (int)(actualWidth+3), (int)(actualHeight+2));
 876
 877     return TRUE;
 878 }
 879
 880 void wxPrintPreviewBase::SetZoom(int percent)
 881 {
 882     if (m_currentZoom == percent)
 883         return;
 884
 885     m_currentZoom = percent;
 886     if (m_previewBitmap)
 887     {
 888         delete m_previewBitmap;
 889         m_previewBitmap = NULL;
 890     }
 891
 892     if (m_previewCanvas)
 893     {
 894         AdjustScrollbars(m_previewCanvas);
 895         RenderPage(m_currentPage);
 896         ((wxScrolledWindow *) m_previewCanvas)->Scroll(0, 0);
 897         m_previewCanvas->Clear();
 898         m_previewCanvas->Refresh();
 899         m_previewCanvas->SetFocus();
 900     }
 901 }
 902
 903 #endif // wxUSE_PRINTING_ARCHITECTURE