samples/printing/printing.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        printing.cpp
   3 // Purpose:     Printing demo for wxWindows
   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 to compile this demo.
  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, char *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 = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL);
  78
  79     g_printData = new wxPrintData;
  80     g_pageSetupData = new wxPageSetupDialogData;
  81
  82     // wxGetenv( wxT("HOME") );
  83
  84     // Compatibility with old system. In fact, we might keep wxThePrintSetupData
  85     // just for useful default values which we can optionally assign to our
  86     // own print data object.
  87
  88 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  89     (*g_printData) = * wxThePrintSetupData;
  90 #endif
  91
  92     // Create the main frame window
  93     frame = new MyFrame((wxFrame *) NULL, (char *) "wxWindows Printing Demo", wxPoint(0, 0), wxSize(400, 400));
  94
  95     // Give it a status line
  96     frame->CreateStatusBar(2);
  97
  98     // Load icon and bitmap
  99     frame->SetIcon( wxICON( mondrian) );
 100
 101     // Make a menubar
 102     wxMenu *file_menu = new wxMenu;
 103
 104     file_menu->Append(WXPRINT_PRINT, "&Print...",              "Print");
 105     file_menu->Append(WXPRINT_PRINT_SETUP, "Print &Setup...",              "Setup printer properties");
 106     file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...",              "Page setup");
 107     file_menu->Append(WXPRINT_PREVIEW, "Print Pre&view",              "Preview");
 108
 109 #if wxUSE_ACCEL
 110     // Accelerators
 111     wxAcceleratorEntry entries[1];
 112     entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
 113     wxAcceleratorTable accel(1, entries);
 114     frame->SetAcceleratorTable(accel);
 115 #endif
 116
 117 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 118     file_menu->AppendSeparator();
 119     file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...",              "Print (PostScript)");
 120     file_menu->Append(WXPRINT_PRINT_SETUP_PS, "Print Setup PostScript...",              "Setup printer properties (PostScript)");
 121     file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...",              "Page setup (PostScript)");
 122     file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript",              "Preview (PostScript)");
 123 #endif
 124     file_menu->AppendSeparator();
 125     file_menu->Append(WXPRINT_QUIT, "E&xit",                "Exit program");
 126
 127     wxMenu *help_menu = new wxMenu;
 128     help_menu->Append(WXPRINT_ABOUT, "&About",              "About this demo");
 129
 130     wxMenuBar *menu_bar = new wxMenuBar;
 131
 132     menu_bar->Append(file_menu, "&File");
 133     menu_bar->Append(help_menu, "&Help");
 134
 135     // Associate the menu bar with the frame
 136     frame->SetMenuBar(menu_bar);
 137
 138     MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 139
 140     // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 141     canvas->SetScrollbars(20, 20, 50, 50);
 142
 143     frame->canvas = canvas;
 144
 145     frame->Centre(wxBOTH);
 146     frame->Show(TRUE);
 147
 148     frame->SetStatusText("Printing demo");
 149
 150     SetTopWindow(frame);
 151
 152     return TRUE;
 153 }
 154
 155 int MyApp::OnExit()
 156 {
 157     delete wxGetApp().m_testFont;
 158     delete g_printData;
 159     delete g_pageSetupData;
 160     return 1;
 161 }
 162
 163 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 164 EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 165 EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 166 EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 167 EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 168 EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 169 EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 170 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 171 EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 172 EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 173 EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 174 EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 175 #endif
 176 END_EVENT_TABLE()
 177
 178 // Define my frame constructor
 179 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 180 wxFrame(frame, -1, title, pos, size)
 181 {
 182     canvas = (MyCanvas *) NULL;
 183 }
 184
 185 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 186 {
 187     Close(TRUE);
 188 }
 189
 190 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 191 {
 192     wxPrintDialogData printDialogData(* g_printData);
 193
 194     wxPrinter printer(& printDialogData);
 195     MyPrintout printout("My printout");
 196     if (!printer.Print(this, &printout, TRUE))
 197     {
 198         if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
 199             wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK);
 200         else
 201             wxMessageBox("You canceled printing", "Printing", wxOK);
 202     }
 203     else
 204     {
 205         (*g_printData) = printer.GetPrintDialogData().GetPrintData();
 206     }
 207 }
 208
 209 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 210 {
 211     // Pass two printout objects: for preview, and possible printing.
 212     wxPrintDialogData printDialogData(* g_printData);
 213     wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
 214     if (!preview->Ok())
 215     {
 216         delete preview;
 217         wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
 218         return;
 219     }
 220
 221     wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 222     frame->Centre(wxBOTH);
 223     frame->Initialize();
 224     frame->Show(TRUE);
 225 }
 226
 227 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 228 {
 229     wxPrintDialogData printDialogData(* g_printData);
 230     wxPrintDialog printerDialog(this, & printDialogData);
 231
 232     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 233     printerDialog.ShowModal();
 234
 235     (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
 236 }
 237
 238 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 239 {
 240     (*g_pageSetupData) = * g_printData;
 241
 242     wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
 243     pageSetupDialog.ShowModal();
 244
 245     (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 246     (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
 247 }
 248
 249 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 250 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 251 {
 252     wxPostScriptPrinter printer(g_printData);
 253     MyPrintout printout("My printout");
 254     printer.Print(this, &printout, TRUE);
 255
 256     (*g_printData) = printer.GetPrintData();
 257 }
 258
 259 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 260 {
 261     // Pass two printout objects: for preview, and possible printing.
 262     wxPrintDialogData printDialogData(* g_printData);
 263     wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
 264     wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 265     frame->Centre(wxBOTH);
 266     frame->Initialize();
 267     frame->Show(TRUE);
 268 }
 269
 270 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 271 {
 272     wxPrintDialogData printDialogData(* g_printData);
 273     wxGenericPrintDialog printerDialog(this, & printDialogData);
 274
 275     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 276     printerDialog.ShowModal();
 277
 278     (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
 279 }
 280
 281 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 282 {
 283     (*g_pageSetupData) = * g_printData;
 284
 285     wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
 286     pageSetupDialog.ShowModal();
 287
 288     (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 289     (*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
 290 }
 291 #endif
 292
 293
 294 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 295 {
 296     (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk",
 297         "About wxWindows printing demo", wxOK|wxCENTRE);
 298 }
 299
 300 void MyFrame::Draw(wxDC& dc)
 301 {
 302     dc.SetBackground(*wxWHITE_BRUSH);
 303     dc.Clear();
 304     dc.SetFont(* wxGetApp().m_testFont);
 305
 306     dc.SetBackgroundMode(wxTRANSPARENT);
 307
 308     dc.SetBrush(* wxCYAN_BRUSH);
 309     dc.SetPen(* wxRED_PEN);
 310
 311     dc.DrawRectangle(0, 30, 200, 100);
 312
 313     dc.DrawText( wxT("Rectangle 200 by 100"), 40, 40);
 314
 315     dc.DrawEllipse(50, 140, 100, 50);
 316
 317     dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
 318
 319 #if wxUSE_UNICODE
 320     char *test = "Greek (Ελληνικά) Γειά σας -- Hebrew    שלום -- Japanese (日本語)";
 321     wxString tmp = wxConvUTF8.cMB2WC( test );
 322     dc.DrawText( tmp, 10, 200 );
 323 #endif
 324
 325     dc.SetPen(* wxBLACK_PEN);
 326     dc.DrawLine(0, 0, 200, 200);
 327     dc.DrawLine(200, 0, 0, 200);
 328
 329     wxIcon my_icon = wxICON(mondrian) ;
 330
 331     dc.DrawIcon( my_icon, 100, 100);
 332 }
 333
 334 void MyFrame::OnSize(wxSizeEvent& event )
 335 {
 336     wxFrame::OnSize(event);
 337 }
 338
 339 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 340 EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 341 END_EVENT_TABLE()
 342
 343 // Define a constructor for my canvas
 344 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 345     wxScrolledWindow(frame, -1, pos, size, style)
 346 {
 347     SetBackgroundColour(* wxWHITE);
 348 }
 349
 350 MyCanvas::~MyCanvas(void)
 351 {
 352 }
 353
 354 // Define the repainting behaviour
 355 void MyCanvas::OnDraw(wxDC& dc)
 356 {
 357     frame->Draw(dc);
 358 }
 359
 360 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 361 {
 362 }
 363
 364 bool MyPrintout::OnPrintPage(int page)
 365 {
 366     wxDC *dc = GetDC();
 367     if (dc)
 368     {
 369         if (page == 1)
 370             DrawPageOne(dc);
 371         else if (page == 2)
 372             DrawPageTwo(dc);
 373
 374         dc->SetDeviceOrigin(0, 0);
 375         dc->SetUserScale(1.0, 1.0);
 376
 377         wxChar buf[200];
 378         wxSprintf(buf, wxT("PAGE %d"), page);
 379         dc->DrawText(buf, 10, 10);
 380
 381         return TRUE;
 382     }
 383     else
 384         return FALSE;
 385 }
 386
 387 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 388 {
 389     if (!wxPrintout::OnBeginDocument(startPage, endPage))
 390         return FALSE;
 391
 392     return TRUE;
 393 }
 394
 395 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 396 {
 397     *minPage = 1;
 398     *maxPage = 2;
 399     *selPageFrom = 1;
 400     *selPageTo = 2;
 401 }
 402
 403 bool MyPrintout::HasPage(int pageNum)
 404 {
 405     return (pageNum == 1 || pageNum == 2);
 406 }
 407
 408 void MyPrintout::DrawPageOne(wxDC *dc)
 409 {
 410 /* You might use THIS code if you were scaling
 411 * graphics of known size to fit on the page.
 412     */
 413     int w, h;
 414
 415     // We know the graphic is 200x200. If we didn't know this,
 416     // we'd need to calculate it.
 417     float maxX = 200;
 418     float maxY = 200;
 419
 420     // Let's have at least 50 device units margin
 421     float marginX = 50;
 422     float marginY = 50;
 423
 424     // Add the margin to the graphic size
 425     maxX += (2*marginX);
 426     maxY += (2*marginY);
 427
 428     // Get the size of the DC in pixels
 429     dc->GetSize(&w, &h);
 430
 431     // Calculate a suitable scaling factor
 432     float scaleX=(float)(w/maxX);
 433     float scaleY=(float)(h/maxY);
 434
 435     // Use x or y scaling factor, whichever fits on the DC
 436     float actualScale = wxMin(scaleX,scaleY);
 437
 438     // Calculate the position on the DC for centring the graphic
 439     float posX = (float)((w - (200*actualScale))/2.0);
 440     float posY = (float)((h - (200*actualScale))/2.0);
 441
 442     // Set the scale and origin
 443     dc->SetUserScale(actualScale, actualScale);
 444     dc->SetDeviceOrigin( (long)posX, (long)posY );
 445
 446     frame->Draw(*dc);
 447 }
 448
 449 void MyPrintout::DrawPageTwo(wxDC *dc)
 450 {
 451 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 452 * the screen text size. This page also draws lines of actual length 5cm
 453 * on the page.
 454     */
 455     // Get the logical pixels per inch of screen and printer
 456     int ppiScreenX, ppiScreenY;
 457     GetPPIScreen(&ppiScreenX, &ppiScreenY);
 458     int ppiPrinterX, ppiPrinterY;
 459     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 460
 461     // This scales the DC so that the printout roughly represents the
 462     // the screen scaling. The text point size _should_ be the right size
 463     // but in fact is too small for some reason. This is a detail that will
 464     // need to be addressed at some point but can be fudged for the
 465     // moment.
 466     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 467
 468     // Now we have to check in case our real page size is reduced
 469     // (e.g. because we're drawing to a print preview memory DC)
 470     int pageWidth, pageHeight;
 471     int w, h;
 472     dc->GetSize(&w, &h);
 473     GetPageSizePixels(&pageWidth, &pageHeight);
 474
 475     // If printer pageWidth == current DC width, then this doesn't
 476     // change. But w might be the preview bitmap width, so scale down.
 477     float overallScale = scale * (float)(w/(float)pageWidth);
 478     dc->SetUserScale(overallScale, overallScale);
 479
 480     // Calculate conversion factor for converting millimetres into
 481     // logical units.
 482     // There are approx. 25.1 mm to the inch. There are ppi
 483     // device units to the inch. Therefore 1 mm corresponds to
 484     // ppi/25.1 device units. We also divide by the
 485     // screen-to-printer scaling factor, because we need to
 486     // unscale to pass logical units to DrawLine.
 487
 488     // Draw 50 mm by 50 mm L shape
 489     float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 490     float logUnits = (float)(50*logUnitsFactor);
 491     dc->SetPen(* wxBLACK_PEN);
 492     dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 493     dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 494
 495     return;
 496
 497     dc->SetFont(* wxGetApp().m_testFont);
 498     dc->SetBackgroundMode(wxTRANSPARENT);
 499
 500
 501     { // GetTextExtent demo:
 502         wxString words[7] = {"This ", "is ", "GetTextExtent ", "testing ", "string. ", "Enjoy ", "it!"};
 503         long w, h;
 504         long x = 200, y= 250;
 505         wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
 506
 507         dc->SetFont(fnt);
 508         for (int i = 0; i < 7; i++) {
 509             dc->GetTextExtent(words[i], &w, &h);
 510             dc->DrawRectangle(x, y, w, h);
 511             dc->DrawText(words[i], x, y);
 512             x += w;
 513         }
 514         dc->SetFont(* wxGetApp().m_testFont);
 515     }
 516
 517     dc->DrawText("Some test text", 200, 300 );
 518
 519     // TESTING
 520
 521     int leftMargin = 20;
 522     int rightMargin = 20;
 523     int topMargin = 20;
 524     int bottomMargin = 20;
 525
 526     int pageWidthMM, pageHeightMM;
 527     GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 528
 529     float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 530     float topMarginLogical = (float)(logUnitsFactor*topMargin);
 531     float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 532     float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 533
 534     dc->SetPen(* wxRED_PEN);
 535     dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 536         (long)rightMarginLogical, (long)topMarginLogical);
 537     dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 538         (long)rightMarginLogical,  (long)bottomMarginLogical);
 539
 540     WritePageHeader(this, dc, "A header", logUnitsFactor);
 541 }
 542
 543 // Writes a header on a page. Margin units are in millimetres.
 544 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
 545 {
 546 /*
 547 static wxFont *headerFont = (wxFont *) NULL;
 548 if (!headerFont)
 549 {
 550 headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 551 }
 552 dc->SetFont(headerFont);
 553     */
 554
 555     int pageWidthMM, pageHeightMM;
 556
 557     printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 558
 559     int leftMargin = 10;
 560     int topMargin = 10;
 561     int rightMargin = 10;
 562
 563     float leftMarginLogical = (float)(mmToLogical*leftMargin);
 564     float topMarginLogical = (float)(mmToLogical*topMargin);
 565     float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 566
 567     long xExtent, yExtent;
 568     dc->GetTextExtent(text, &xExtent, &yExtent);
 569     float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 570     dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 571
 572     dc->SetPen(* wxBLACK_PEN);
 573     dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 574         (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 575
 576     return TRUE;
 577 }