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 MyApp::MyApp()
  70 {
  71 }
  72
  73 // The `main program' equivalent, creating the windows and returning the
  74 // main frame
  75 bool MyApp::OnInit(void)
  76 {
  77     m_testFont.Create(10, wxSWISS, wxNORMAL, wxNORMAL);
  78
  79     g_printData = new wxPrintData;
  80     g_pageSetupData = new wxPageSetupDialogData;
  81
  82     // Create the main frame window
  83     frame = new MyFrame((wxFrame *) NULL, _T("wxWidgets Printing Demo"), wxPoint(0, 0), wxSize(400, 400));
  84
  85 #if wxUSE_STATUSBAR
  86     // Give it a status line
  87     frame->CreateStatusBar(2);
  88 #endif // wxUSE_STATUSBAR
  89
  90     // Load icon and bitmap
  91     frame->SetIcon( wxICON( mondrian) );
  92
  93     // Make a menubar
  94     wxMenu *file_menu = new wxMenu;
  95
  96     file_menu->Append(WXPRINT_PRINT, _T("&Print..."),              _T("Print"));
  97     file_menu->Append(WXPRINT_PRINT_SETUP, _T("Print &Setup..."),              _T("Setup printer properties"));
  98     file_menu->Append(WXPRINT_PAGE_SETUP, _T("Page Set&up..."),              _T("Page setup"));
  99     file_menu->Append(WXPRINT_PREVIEW, _T("Print Pre&view"),              _T("Preview"));
 100
 101 #if wxUSE_ACCEL
 102     // Accelerators
 103     wxAcceleratorEntry entries[1];
 104     entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
 105     wxAcceleratorTable accel(1, entries);
 106     frame->SetAcceleratorTable(accel);
 107 #endif
 108
 109 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 110     file_menu->AppendSeparator();
 111     file_menu->Append(WXPRINT_PRINT_PS, _T("Print PostScript..."),              _T("Print (PostScript)"));
 112     file_menu->Append(WXPRINT_PRINT_SETUP_PS, _T("Print Setup PostScript..."),              _T("Setup printer properties (PostScript)"));
 113     file_menu->Append(WXPRINT_PAGE_SETUP_PS, _T("Page Setup PostScript..."),              _T("Page setup (PostScript)"));
 114     file_menu->Append(WXPRINT_PREVIEW_PS, _T("Print Preview PostScript"),              _T("Preview (PostScript)"));
 115 #endif
 116     file_menu->AppendSeparator();
 117     file_menu->Append(WXPRINT_QUIT, _T("E&xit"),                _T("Exit program"));
 118
 119     wxMenu *help_menu = new wxMenu;
 120     help_menu->Append(WXPRINT_ABOUT, _T("&About"),              _T("About this demo"));
 121
 122     wxMenuBar *menu_bar = new wxMenuBar;
 123
 124     menu_bar->Append(file_menu, _T("&File"));
 125     menu_bar->Append(help_menu, _T("&Help"));
 126
 127     // Associate the menu bar with the frame
 128     frame->SetMenuBar(menu_bar);
 129
 130     MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 131
 132     // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 133     canvas->SetScrollbars(20, 20, 50, 50);
 134
 135     frame->canvas = canvas;
 136
 137     frame->Centre(wxBOTH);
 138     frame->Show();
 139
 140 #if wxUSE_STATUSBAR
 141     frame->SetStatusText(_T("Printing demo"));
 142 #endif // wxUSE_STATUSBAR
 143
 144     SetTopWindow(frame);
 145
 146     return true;
 147 }
 148
 149 int MyApp::OnExit()
 150 {
 151     delete g_printData;
 152     delete g_pageSetupData;
 153     return 1;
 154 }
 155
 156 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 157 EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 158 EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 159 EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 160 EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 161 EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 162 EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 163 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 164 EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 165 EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 166 EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 167 EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 168 #endif
 169 END_EVENT_TABLE()
 170
 171 // Define my frame constructor
 172 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 173 wxFrame(frame, wxID_ANY, title, pos, size)
 174 {
 175     canvas = NULL;
 176 }
 177
 178 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 179 {
 180     Close(true /*force closing*/);
 181 }
 182
 183 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 184 {
 185     wxPrintDialogData printDialogData(* g_printData);
 186
 187     wxPrinter printer(& printDialogData);
 188     MyPrintout printout(_T("My printout"));
 189     if (!printer.Print(this, &printout, true /*prompt*/))
 190     {
 191         if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
 192             wxMessageBox(_T("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _T("Printing"), wxOK);
 193         else
 194             wxMessageBox(_T("You canceled printing"), _T("Printing"), wxOK);
 195     }
 196     else
 197     {
 198         (*g_printData) = printer.GetPrintDialogData().GetPrintData();
 199     }
 200 }
 201
 202 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 203 {
 204     // Pass two printout objects: for preview, and possible printing.
 205     wxPrintDialogData printDialogData(* g_printData);
 206     wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
 207     if (!preview->Ok())
 208     {
 209         delete preview;
 210         wxMessageBox(_T("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _T("Previewing"), wxOK);
 211         return;
 212     }
 213
 214     wxPreviewFrame *frame = new wxPreviewFrame(preview, this, _T("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
 215     frame->Centre(wxBOTH);
 216     frame->Initialize();
 217     frame->Show();
 218 }
 219
 220 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 221 {
 222     wxPrintDialogData printDialogData(* g_printData);
 223     wxPrintDialog printerDialog(this, & printDialogData);
 224
 225     printerDialog.GetPrintDialogData().SetSetupDialog(true /*show print setup dialog*/);
 226     printerDialog.ShowModal();
 227
 228     (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
 229 }
 230
 231 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 232 {
 233     (*g_pageSetupData) = * g_printData;
 234
 235     wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
 236     pageSetupDialog.ShowModal();
 237
 238     (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 239     (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
 240 }
 241
 242 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 243 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 244 {
 245     wxPostScriptPrinter printer(g_printData);
 246     MyPrintout printout(_T("My printout"));
 247     printer.Print(this, &printout, true/*prompt*/);
 248
 249     (*g_printData) = printer.GetPrintData();
 250 }
 251
 252 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 253 {
 254     // Pass two printout objects: for preview, and possible printing.
 255     wxPrintDialogData printDialogData(* g_printData);
 256     wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
 257     wxPreviewFrame *frame = new wxPreviewFrame(preview, this, _T("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
 258     frame->Centre(wxBOTH);
 259     frame->Initialize();
 260     frame->Show();
 261 }
 262
 263 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 264 {
 265     wxPrintDialogData printDialogData(* g_printData);
 266     wxGenericPrintDialog printerDialog(this, & printDialogData);
 267
 268     printerDialog.GetPrintDialogData().SetSetupDialog(true /*show print setup dialog*/);
 269     printerDialog.ShowModal();
 270
 271     (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
 272 }
 273
 274 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 275 {
 276     (*g_pageSetupData) = * g_printData;
 277
 278     wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
 279     pageSetupDialog.ShowModal();
 280
 281     (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 282     (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
 283 }
 284 #endif
 285
 286
 287 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 288 {
 289     (void)wxMessageBox(_T("wxWidgets printing demo\nAuthor: Julian Smart"),
 290         _T("About wxWidgets printing demo"), wxOK|wxCENTRE);
 291 }
 292
 293 void MyFrame::Draw(wxDC& dc)
 294 {
 295     dc.SetBackground(*wxWHITE_BRUSH);
 296     dc.Clear();
 297     dc.SetFont(wxGetApp().m_testFont);
 298
 299     dc.SetBackgroundMode(wxTRANSPARENT);
 300
 301     dc.SetBrush(* wxCYAN_BRUSH);
 302     dc.SetPen(* wxRED_PEN);
 303
 304     dc.DrawRectangle(0, 30, 200, 100);
 305
 306     dc.DrawText( wxT("Rectangle 200 by 100"), 40, 40);
 307
 308     dc.DrawEllipse(50, 140, 100, 50);
 309
 310     dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
 311
 312 #if wxUSE_UNICODE
 313     char *test = "Hebrew    שלום -- Japanese (日本語)";
 314     wxString tmp = wxConvUTF8.cMB2WC( test );
 315     dc.DrawText( tmp, 10, 200 );
 316 #endif
 317
 318     dc.SetPen(* wxBLACK_PEN);
 319     dc.DrawLine(0, 0, 200, 200);
 320     dc.DrawLine(200, 0, 0, 200);
 321
 322     wxIcon my_icon = wxICON(mondrian) ;
 323
 324     dc.DrawIcon( my_icon, 100, 100);
 325 }
 326
 327 void MyFrame::OnSize(wxSizeEvent& event )
 328 {
 329     wxFrame::OnSize(event);
 330 }
 331
 332 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 333 EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 334 END_EVENT_TABLE()
 335
 336 // Define a constructor for my canvas
 337 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 338     wxScrolledWindow(frame, wxID_ANY, pos, size, style)
 339 {
 340     SetBackgroundColour(* wxWHITE);
 341 }
 342
 343 MyCanvas::~MyCanvas(void)
 344 {
 345 }
 346
 347 // Define the repainting behaviour
 348 void MyCanvas::OnDraw(wxDC& dc)
 349 {
 350     frame->Draw(dc);
 351 }
 352
 353 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 354 {
 355 }
 356
 357 bool MyPrintout::OnPrintPage(int page)
 358 {
 359     wxDC *dc = GetDC();
 360     if (dc)
 361     {
 362         if (page == 1)
 363             DrawPageOne(dc);
 364         else if (page == 2)
 365             DrawPageTwo(dc);
 366
 367         dc->SetDeviceOrigin(0, 0);
 368         dc->SetUserScale(1.0, 1.0);
 369
 370         wxChar buf[200];
 371         wxSprintf(buf, wxT("PAGE %d"), page);
 372         dc->DrawText(buf, 10, 10);
 373
 374         return true;
 375     }
 376     else
 377         return false;
 378 }
 379
 380 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 381 {
 382     if (!wxPrintout::OnBeginDocument(startPage, endPage))
 383         return false;
 384
 385     return true;
 386 }
 387
 388 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 389 {
 390     *minPage = 1;
 391     *maxPage = 2;
 392     *selPageFrom = 1;
 393     *selPageTo = 2;
 394 }
 395
 396 bool MyPrintout::HasPage(int pageNum)
 397 {
 398     return (pageNum == 1 || pageNum == 2);
 399 }
 400
 401 void MyPrintout::DrawPageOne(wxDC *dc)
 402 {
 403     // You might use THIS code if you were scaling
 404     // graphics of known size to fit on the page.
 405
 406     // We know the graphic is 200x200. If we didn't know this,
 407     // we'd need to calculate it.
 408     float maxX = 200;
 409     float maxY = 200;
 410
 411     // Let's have at least 50 device units margin
 412     float marginX = 50;
 413     float marginY = 50;
 414
 415     // Add the margin to the graphic size
 416     maxX += (2*marginX);
 417     maxY += (2*marginY);
 418
 419     // Get the size of the DC in pixels
 420     int w, h;
 421     dc->GetSize(&w, &h);
 422
 423     // Calculate a suitable scaling factor
 424     float scaleX=(float)(w/maxX);
 425     float scaleY=(float)(h/maxY);
 426
 427     // Use x or y scaling factor, whichever fits on the DC
 428     float actualScale = wxMin(scaleX,scaleY);
 429
 430     // Calculate the position on the DC for centring the graphic
 431     float posX = (float)((w - (200*actualScale))/2.0);
 432     float posY = (float)((h - (200*actualScale))/2.0);
 433
 434     // Set the scale and origin
 435     dc->SetUserScale(actualScale, actualScale);
 436     dc->SetDeviceOrigin( (long)posX, (long)posY );
 437
 438     frame->Draw(*dc);
 439 }
 440
 441 void MyPrintout::DrawPageTwo(wxDC *dc)
 442 {
 443     // You might use THIS code to set the printer DC to ROUGHLY reflect
 444     // the screen text size. This page also draws lines of actual length
 445     // 5cm on the page.
 446
 447     // Get the logical pixels per inch of screen and printer
 448     int ppiScreenX, ppiScreenY;
 449     GetPPIScreen(&ppiScreenX, &ppiScreenY);
 450     int ppiPrinterX, ppiPrinterY;
 451     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 452
 453     // This scales the DC so that the printout roughly represents the
 454     // the screen scaling. The text point size _should_ be the right size
 455     // but in fact is too small for some reason. This is a detail that will
 456     // need to be addressed at some point but can be fudged for the
 457     // moment.
 458     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 459
 460     // Now we have to check in case our real page size is reduced
 461     // (e.g. because we're drawing to a print preview memory DC)
 462     int pageWidth, pageHeight;
 463     int w, h;
 464     dc->GetSize(&w, &h);
 465     GetPageSizePixels(&pageWidth, &pageHeight);
 466
 467     // If printer pageWidth == current DC width, then this doesn't
 468     // change. But w might be the preview bitmap width, so scale down.
 469     float overallScale = scale * (float)(w/(float)pageWidth);
 470     dc->SetUserScale(overallScale, overallScale);
 471
 472     // Calculate conversion factor for converting millimetres into
 473     // logical units.
 474     // There are approx. 25.1 mm to the inch. There are ppi
 475     // device units to the inch. Therefore 1 mm corresponds to
 476     // ppi/25.1 device units. We also divide by the
 477     // screen-to-printer scaling factor, because we need to
 478     // unscale to pass logical units to DrawLine.
 479
 480     // Draw 50 mm by 50 mm L shape
 481     float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 482     float logUnits = (float)(50*logUnitsFactor);
 483     dc->SetPen(* wxBLACK_PEN);
 484     dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 485     dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 486
 487     dc->SetBackgroundMode(wxTRANSPARENT);
 488
 489
 490     { // GetTextExtent demo:
 491         wxString words[7] = {_T("This "), _T("is "), _T("GetTextExtent "), _T("testing "), _T("string. "), _T("Enjoy "), _T("it!")};
 492         long w, h;
 493         long x = 200, y= 250;
 494         wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
 495
 496         dc->SetFont(fnt);
 497
 498         for (int i = 0; i < 7; i++)
 499         {
 500             wxString word = words[i];
 501             word.Remove( word.Len()-1, 1 );
 502             dc->GetTextExtent(word, &w, &h);
 503             dc->DrawRectangle(x, y, w, h);
 504             dc->GetTextExtent(words[i], &w, &h);
 505             dc->DrawText(words[i], x, y);
 506             x += w;
 507         }
 508
 509     }
 510
 511     dc->SetFont(wxGetApp().m_testFont);
 512
 513     dc->DrawText(_T("Some test text"), 200, 300 );
 514
 515     // TESTING
 516
 517     int leftMargin = 20;
 518     int rightMargin = 20;
 519     int topMargin = 20;
 520     int bottomMargin = 20;
 521
 522     int pageWidthMM, pageHeightMM;
 523     GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 524
 525     float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 526     float topMarginLogical = (float)(logUnitsFactor*topMargin);
 527     float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 528     float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 529
 530     dc->SetPen(* wxRED_PEN);
 531     dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 532         (long)rightMarginLogical, (long)topMarginLogical);
 533     dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 534         (long)rightMarginLogical,  (long)bottomMarginLogical);
 535
 536     WritePageHeader(this, dc, _T("A header"), logUnitsFactor);
 537 }
 538
 539 // Writes a header on a page. Margin units are in millimetres.
 540 bool WritePageHeader(wxPrintout *printout, wxDC *dc, wxChar *text, float mmToLogical)
 541 {
 542 /*
 543 static wxFont *headerFont = (wxFont *) NULL;
 544 if (!headerFont)
 545 {
 546 headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 547 }
 548 dc->SetFont(headerFont);
 549     */
 550
 551     int pageWidthMM, pageHeightMM;
 552
 553     printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 554     wxUnusedVar(pageHeightMM);
 555
 556     int leftMargin = 10;
 557     int topMargin = 10;
 558     int rightMargin = 10;
 559
 560     float leftMarginLogical = (float)(mmToLogical*leftMargin);
 561     float topMarginLogical = (float)(mmToLogical*topMargin);
 562     float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 563
 564     long xExtent, yExtent;
 565     dc->GetTextExtent(text, &xExtent, &yExtent);
 566     float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 567     dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 568
 569     dc->SetPen(* wxBLACK_PEN);
 570     dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 571         (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 572
 573     return true;
 574 }