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