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