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