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