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