samples/printing/printing.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        printing.cpp
   3 // Purpose:     Printing demo for wxWidgets
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     1995
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx/wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #if !wxUSE_PRINTING_ARCHITECTURE
  28 #error "You must set wxUSE_PRINTING_ARCHITECTURE to 1 in setup.h, and recompile the library."
  29 #endif
  30
  31 // Set this to 1 if you want to test PostScript printing under MSW.
  32 // However, you'll also need to edit src/msw/makefile.nt.
  33 #define wxTEST_POSTSCRIPT_IN_MSW 0
  34
  35 #include <ctype.h>
  36 #include "wx/metafile.h"
  37 #include "wx/print.h"
  38 #include "wx/printdlg.h"
  39
  40 #include "wx/accel.h"
  41
  42 #if wxTEST_POSTSCRIPT_IN_MSW
  43 #include "wx/generic/printps.h"
  44 #include "wx/generic/prntdlgg.h"
  45 #endif
  46
  47 #include "printing.h"
  48
  49 #ifndef __WXMSW__
  50 #include "mondrian.xpm"
  51 #endif
  52
  53 // Declare a frame
  54 MyFrame   *frame = (MyFrame *) NULL;
  55 // int orientation = wxPORTRAIT;
  56
  57 // Global print data, to remember settings during the session
  58 wxPrintData *g_printData = (wxPrintData*) NULL ;
  59
  60 // Global page setup data
  61 wxPageSetupData* g_pageSetupData = (wxPageSetupData*) NULL;
  62
  63 // Main proc
  64 IMPLEMENT_APP(MyApp)
  65
  66 // Writes a header on a page. Margin units are in millimetres.
  67 bool WritePageHeader(wxPrintout *printout, wxDC *dc, wxChar *text, float mmToLogical);
  68
  69 // The `main program' equivalent, creating the windows and returning the
  70 // main frame
  71 bool MyApp::OnInit(void)
  72 {
  73     m_testFont.Create(10, wxSWISS, wxNORMAL, wxNORMAL);
  74
  75     g_printData = new wxPrintData;
  76     g_pageSetupData = new wxPageSetupDialogData;
  77
  78     // Create the main frame window
  79     frame = new MyFrame((wxFrame *) NULL, _T("wxWidgets Printing Demo"), wxPoint(0, 0), wxSize(400, 400));
  80
  81 #if wxUSE_STATUSBAR
  82     // Give it a status line
  83     frame->CreateStatusBar(2);
  84 #endif // wxUSE_STATUSBAR
  85
  86     // Load icon and bitmap
  87     frame->SetIcon( wxICON( mondrian) );
  88
  89     // Make a menubar
  90     wxMenu *file_menu = new wxMenu;
  91
  92     file_menu->Append(WXPRINT_PRINT, _T("&Print..."),              _T("Print"));
  93     file_menu->Append(WXPRINT_PRINT_SETUP, _T("Print &Setup..."),              _T("Setup printer properties"));
  94     file_menu->Append(WXPRINT_PAGE_SETUP, _T("Page Set&up..."),              _T("Page setup"));
  95     file_menu->Append(WXPRINT_PREVIEW, _T("Print Pre&view"),              _T("Preview"));
  96
  97 #if wxUSE_ACCEL
  98     // Accelerators
  99     wxAcceleratorEntry entries[1];
 100     entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
 101     wxAcceleratorTable accel(1, entries);
 102     frame->SetAcceleratorTable(accel);
 103 #endif
 104
 105 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 106     file_menu->AppendSeparator();
 107     file_menu->Append(WXPRINT_PRINT_PS, _T("Print PostScript..."),              _T("Print (PostScript)"));
 108     file_menu->Append(WXPRINT_PRINT_SETUP_PS, _T("Print Setup PostScript..."),              _T("Setup printer properties (PostScript)"));
 109     file_menu->Append(WXPRINT_PAGE_SETUP_PS, _T("Page Setup PostScript..."),              _T("Page setup (PostScript)"));
 110     file_menu->Append(WXPRINT_PREVIEW_PS, _T("Print Preview PostScript"),              _T("Preview (PostScript)"));
 111 #endif
 112     file_menu->AppendSeparator();
 113     file_menu->Append(WXPRINT_QUIT, _T("E&xit"),                _T("Exit program"));
 114
 115     wxMenu *help_menu = new wxMenu;
 116     help_menu->Append(WXPRINT_ABOUT, _T("&About"),              _T("About this demo"));
 117
 118     wxMenuBar *menu_bar = new wxMenuBar;
 119
 120     menu_bar->Append(file_menu, _T("&File"));
 121     menu_bar->Append(help_menu, _T("&Help"));
 122
 123     // Associate the menu bar with the frame
 124     frame->SetMenuBar(menu_bar);
 125
 126     MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 127
 128     // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 129     canvas->SetScrollbars(20, 20, 50, 50);
 130
 131     frame->canvas = canvas;
 132
 133     frame->Centre(wxBOTH);
 134     frame->Show();
 135
 136 #if wxUSE_STATUSBAR
 137     frame->SetStatusText(_T("Printing demo"));
 138 #endif // wxUSE_STATUSBAR
 139
 140     SetTopWindow(frame);
 141
 142     return true;
 143 }
 144
 145 int MyApp::OnExit()
 146 {
 147     delete g_printData;
 148     delete g_pageSetupData;
 149     return 1;
 150 }
 151
 152 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 153 EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 154 EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 155 EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 156 EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 157 EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 158 EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 159 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 160 EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 161 EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 162 EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 163 EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 164 #endif
 165 END_EVENT_TABLE()
 166
 167 // Define my frame constructor
 168 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 169 wxFrame(frame, wxID_ANY, title, pos, size)
 170 {
 171     canvas = NULL;
 172 }
 173
 174 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 175 {
 176     Close(true /*force closing*/);
 177 }
 178
 179 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 180 {
 181     wxPrintDialogData printDialogData(* g_printData);
 182
 183     wxPrinter printer(& printDialogData);
 184     MyPrintout printout(_T("My printout"));
 185     if (!printer.Print(this, &printout, true /*prompt*/))
 186     {
 187         if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
 188             wxMessageBox(_T("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _T("Printing"), wxOK);
 189         else
 190             wxMessageBox(_T("You canceled printing"), _T("Printing"), wxOK);
 191     }
 192     else
 193     {
 194         (*g_printData) = printer.GetPrintDialogData().GetPrintData();
 195     }
 196 }
 197
 198 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 199 {
 200     // Pass two printout objects: for preview, and possible printing.
 201     wxPrintDialogData printDialogData(* g_printData);
 202     wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
 203     if (!preview->Ok())
 204     {
 205         delete preview;
 206         wxMessageBox(_T("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _T("Previewing"), wxOK);
 207         return;
 208     }
 209
 210     wxPreviewFrame *frame = new wxPreviewFrame(preview, this, _T("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
 211     frame->Centre(wxBOTH);
 212     frame->Initialize();
 213     frame->Show();
 214 }
 215
 216 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 217 {
 218     wxPrintDialogData printDialogData(* g_printData);
 219     wxPrintDialog printerDialog(this, & printDialogData);
 220
 221     printerDialog.GetPrintDialogData().SetSetupDialog(true /*show print setup dialog*/);
 222     printerDialog.ShowModal();
 223
 224     (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
 225 }
 226
 227 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 228 {
 229     (*g_pageSetupData) = * g_printData;
 230
 231     wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
 232     pageSetupDialog.ShowModal();
 233
 234     (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 235     (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
 236 }
 237
 238 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 239 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 240 {
 241     wxPostScriptPrinter printer(g_printData);
 242     MyPrintout printout(_T("My printout"));
 243     printer.Print(this, &printout, true/*prompt*/);
 244
 245     (*g_printData) = printer.GetPrintData();
 246 }
 247
 248 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 249 {
 250     // Pass two printout objects: for preview, and possible printing.
 251     wxPrintDialogData printDialogData(* g_printData);
 252     wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
 253     wxPreviewFrame *frame = new wxPreviewFrame(preview, this, _T("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
 254     frame->Centre(wxBOTH);
 255     frame->Initialize();
 256     frame->Show();
 257 }
 258
 259 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 260 {
 261     wxPrintDialogData printDialogData(* g_printData);
 262     wxGenericPrintDialog printerDialog(this, & printDialogData);
 263
 264     printerDialog.GetPrintDialogData().SetSetupDialog(true /*show print setup dialog*/);
 265     printerDialog.ShowModal();
 266
 267     (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
 268 }
 269
 270 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 271 {
 272     (*g_pageSetupData) = * g_printData;
 273
 274     wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
 275     pageSetupDialog.ShowModal();
 276
 277     (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 278     (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
 279 }
 280 #endif
 281
 282
 283 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 284 {
 285     (void)wxMessageBox(_T("wxWidgets printing demo\nAuthor: Julian Smart"),
 286         _T("About wxWidgets printing demo"), wxOK|wxCENTRE);
 287 }
 288
 289 void MyFrame::Draw(wxDC& dc)
 290 {
 291     dc.SetBackground(*wxWHITE_BRUSH);
 292     dc.Clear();
 293     dc.SetFont(wxGetApp().m_testFont);
 294
 295     dc.SetBackgroundMode(wxTRANSPARENT);
 296
 297     dc.SetBrush(* wxCYAN_BRUSH);
 298     dc.SetPen(* wxRED_PEN);
 299
 300     dc.DrawRectangle(0, 30, 200, 100);
 301
 302     dc.DrawText( wxT("Rectangle 200 by 100"), 40, 40);
 303
 304     dc.DrawEllipse(50, 140, 100, 50);
 305
 306     dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
 307
 308 #if wxUSE_UNICODE
 309     char *test = "Hebrew    שלום -- Japanese (日本語)";
 310     wxString tmp = wxConvUTF8.cMB2WC( test );
 311     dc.DrawText( tmp, 10, 200 );
 312 #endif
 313
 314     dc.SetPen(* wxBLACK_PEN);
 315     dc.DrawLine(0, 0, 200, 200);
 316     dc.DrawLine(200, 0, 0, 200);
 317
 318     wxIcon my_icon = wxICON(mondrian) ;
 319
 320     dc.DrawIcon( my_icon, 100, 100);
 321 }
 322
 323 void MyFrame::OnSize(wxSizeEvent& event )
 324 {
 325     wxFrame::OnSize(event);
 326 }
 327
 328 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 329 EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 330 END_EVENT_TABLE()
 331
 332 // Define a constructor for my canvas
 333 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 334     wxScrolledWindow(frame, wxID_ANY, pos, size, style)
 335 {
 336     SetBackgroundColour(* wxWHITE);
 337 }
 338
 339 // Define the repainting behaviour
 340 void MyCanvas::OnDraw(wxDC& dc)
 341 {
 342     frame->Draw(dc);
 343 }
 344
 345 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 346 {
 347 }
 348
 349 bool MyPrintout::OnPrintPage(int page)
 350 {
 351     wxDC *dc = GetDC();
 352     if (dc)
 353     {
 354         if (page == 1)
 355             DrawPageOne(dc);
 356         else if (page == 2)
 357             DrawPageTwo(dc);
 358
 359         dc->SetDeviceOrigin(0, 0);
 360         dc->SetUserScale(1.0, 1.0);
 361
 362         wxChar buf[200];
 363         wxSprintf(buf, wxT("PAGE %d"), page);
 364         dc->DrawText(buf, 10, 10);
 365
 366         return true;
 367     }
 368     else
 369         return false;
 370 }
 371
 372 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 373 {
 374     if (!wxPrintout::OnBeginDocument(startPage, endPage))
 375         return false;
 376
 377     return true;
 378 }
 379
 380 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 381 {
 382     *minPage = 1;
 383     *maxPage = 2;
 384     *selPageFrom = 1;
 385     *selPageTo = 2;
 386 }
 387
 388 bool MyPrintout::HasPage(int pageNum)
 389 {
 390     return (pageNum == 1 || pageNum == 2);
 391 }
 392
 393 void MyPrintout::DrawPageOne(wxDC *dc)
 394 {
 395     // You might use THIS code if you were scaling
 396     // graphics of known size to fit on the page.
 397
 398     // We know the graphic is 200x200. If we didn't know this,
 399     // we'd need to calculate it.
 400     float maxX = 200;
 401     float maxY = 200;
 402
 403     // Let's have at least 50 device units margin
 404     float marginX = 50;
 405     float marginY = 50;
 406
 407     // Add the margin to the graphic size
 408     maxX += (2*marginX);
 409     maxY += (2*marginY);
 410
 411     // Get the size of the DC in pixels
 412     int w, h;
 413     dc->GetSize(&w, &h);
 414
 415     // Calculate a suitable scaling factor
 416     float scaleX=(float)(w/maxX);
 417     float scaleY=(float)(h/maxY);
 418
 419     // Use x or y scaling factor, whichever fits on the DC
 420     float actualScale = wxMin(scaleX,scaleY);
 421
 422     // Calculate the position on the DC for centring the graphic
 423     float posX = (float)((w - (200*actualScale))/2.0);
 424     float posY = (float)((h - (200*actualScale))/2.0);
 425
 426     // Set the scale and origin
 427     dc->SetUserScale(actualScale, actualScale);
 428     dc->SetDeviceOrigin( (long)posX, (long)posY );
 429
 430     frame->Draw(*dc);
 431 }
 432
 433 void MyPrintout::DrawPageTwo(wxDC *dc)
 434 {
 435     // You might use THIS code to set the printer DC to ROUGHLY reflect
 436     // the screen text size. This page also draws lines of actual length
 437     // 5cm on the page.
 438
 439     // Get the logical pixels per inch of screen and printer
 440     int ppiScreenX, ppiScreenY;
 441     GetPPIScreen(&ppiScreenX, &ppiScreenY);
 442     int ppiPrinterX, ppiPrinterY;
 443     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 444
 445     // This scales the DC so that the printout roughly represents the
 446     // the screen scaling. The text point size _should_ be the right size
 447     // but in fact is too small for some reason. This is a detail that will
 448     // need to be addressed at some point but can be fudged for the
 449     // moment.
 450     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 451
 452     // Now we have to check in case our real page size is reduced
 453     // (e.g. because we're drawing to a print preview memory DC)
 454     int pageWidth, pageHeight;
 455     int w, h;
 456     dc->GetSize(&w, &h);
 457     GetPageSizePixels(&pageWidth, &pageHeight);
 458
 459     // If printer pageWidth == current DC width, then this doesn't
 460     // change. But w might be the preview bitmap width, so scale down.
 461     float overallScale = scale * (float)(w/(float)pageWidth);
 462     dc->SetUserScale(overallScale, overallScale);
 463
 464     // Calculate conversion factor for converting millimetres into
 465     // logical units.
 466     // There are approx. 25.1 mm to the inch. There are ppi
 467     // device units to the inch. Therefore 1 mm corresponds to
 468     // ppi/25.1 device units. We also divide by the
 469     // screen-to-printer scaling factor, because we need to
 470     // unscale to pass logical units to DrawLine.
 471
 472     // Draw 50 mm by 50 mm L shape
 473     float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 474     float logUnits = (float)(50*logUnitsFactor);
 475     dc->SetPen(* wxBLACK_PEN);
 476     dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 477     dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 478
 479     dc->SetBackgroundMode(wxTRANSPARENT);
 480
 481
 482     { // GetTextExtent demo:
 483         wxString words[7] = {_T("This "), _T("is "), _T("GetTextExtent "), _T("testing "), _T("string. "), _T("Enjoy "), _T("it!")};
 484         long w, h;
 485         long x = 200, y= 250;
 486         wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
 487
 488         dc->SetFont(fnt);
 489
 490         for (int i = 0; i < 7; i++)
 491         {
 492             wxString word = words[i];
 493             word.Remove( word.Len()-1, 1 );
 494             dc->GetTextExtent(word, &w, &h);
 495             dc->DrawRectangle(x, y, w, h);
 496             dc->GetTextExtent(words[i], &w, &h);
 497             dc->DrawText(words[i], x, y);
 498             x += w;
 499         }
 500
 501     }
 502
 503     dc->SetFont(wxGetApp().m_testFont);
 504
 505     dc->DrawText(_T("Some test text"), 200, 300 );
 506
 507     // TESTING
 508
 509     int leftMargin = 20;
 510     int rightMargin = 20;
 511     int topMargin = 20;
 512     int bottomMargin = 20;
 513
 514     int pageWidthMM, pageHeightMM;
 515     GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 516
 517     float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 518     float topMarginLogical = (float)(logUnitsFactor*topMargin);
 519     float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 520     float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 521
 522     dc->SetPen(* wxRED_PEN);
 523     dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 524         (long)rightMarginLogical, (long)topMarginLogical);
 525     dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 526         (long)rightMarginLogical,  (long)bottomMarginLogical);
 527
 528     WritePageHeader(this, dc, _T("A header"), logUnitsFactor);
 529 }
 530
 531 // Writes a header on a page. Margin units are in millimetres.
 532 bool WritePageHeader(wxPrintout *printout, wxDC *dc, wxChar *text, float mmToLogical)
 533 {
 534 /*
 535 static wxFont *headerFont = (wxFont *) NULL;
 536 if (!headerFont)
 537 {
 538 headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 539 }
 540 dc->SetFont(headerFont);
 541     */
 542
 543     int pageWidthMM, pageHeightMM;
 544
 545     printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 546     wxUnusedVar(pageHeightMM);
 547
 548     int leftMargin = 10;
 549     int topMargin = 10;
 550     int rightMargin = 10;
 551
 552     float leftMarginLogical = (float)(mmToLogical*leftMargin);
 553     float topMarginLogical = (float)(mmToLogical*topMargin);
 554     float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 555
 556     long xExtent, yExtent;
 557     dc->GetTextExtent(text, &xExtent, &yExtent);
 558     float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 559     dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 560
 561     dc->SetPen(* wxBLACK_PEN);
 562     dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 563         (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 564
 565     return true;
 566 }