samples/printing/printing.cpp

   1 /*
   2 * File: printing.cc
   3 * Purpose:      Printing demo for wxWindows class library
   4 * Author:       Julian Smart
   5 * Created:      1995
   6 * Updated:
   7 * Copyright:   (c) 1995, AIAI, University of Edinburgh
   8 */
   9
  10 /* static const char sccsid[] = "%W% %G%"; */
  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.SetFont(* wxGetApp().m_testFont);
 294
 295     dc.SetBackgroundMode(wxTRANSPARENT);
 296
 297     dc.SetBrush(* wxCYAN_BRUSH);
 298     dc.SetPen(* wxRED_PEN);
 299
 300     dc.DrawRectangle(0, 30, 200, 100);
 301     dc.DrawText("Rectangle 200 by 100", 40, 40);
 302
 303     dc.DrawEllipse(50, 140, 100, 50);
 304
 305     dc.DrawText("Test message: this is in 10 point text", 10, 180);
 306
 307     dc.SetPen(* wxBLACK_PEN);
 308     dc.DrawLine(0, 0, 200, 200);
 309     dc.DrawLine(200, 0, 0, 200);
 310
 311     wxIcon my_icon = wxICON(mondrian) ;
 312
 313     dc.DrawIcon( my_icon, 100, 100);
 314 }
 315
 316 void MyFrame::OnSize(wxSizeEvent& event )
 317 {
 318     wxFrame::OnSize(event);
 319 }
 320
 321 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 322 EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 323 END_EVENT_TABLE()
 324
 325 // Define a constructor for my canvas
 326 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 327     wxScrolledWindow(frame, -1, pos, size, style)
 328 {
 329     SetBackgroundColour(* wxWHITE);
 330 }
 331
 332 MyCanvas::~MyCanvas(void)
 333 {
 334 }
 335
 336 // Define the repainting behaviour
 337 void MyCanvas::OnDraw(wxDC& dc)
 338 {
 339     frame->Draw(dc);
 340 }
 341
 342 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 343 {
 344 }
 345
 346 bool MyPrintout::OnPrintPage(int page)
 347 {
 348     wxDC *dc = GetDC();
 349     if (dc)
 350     {
 351         if (page == 1)
 352             DrawPageOne(dc);
 353         else if (page == 2)
 354             DrawPageTwo(dc);
 355
 356         dc->SetDeviceOrigin(0, 0);
 357         dc->SetUserScale(1.0, 1.0);
 358
 359         char buf[200];
 360         sprintf(buf, "PAGE %d", page);
 361         dc->DrawText(buf, 10, 10);
 362
 363         return TRUE;
 364     }
 365     else
 366         return FALSE;
 367 }
 368
 369 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 370 {
 371     if (!wxPrintout::OnBeginDocument(startPage, endPage))
 372         return FALSE;
 373
 374     return TRUE;
 375 }
 376
 377 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 378 {
 379     *minPage = 1;
 380     *maxPage = 2;
 381     *selPageFrom = 1;
 382     *selPageTo = 2;
 383 }
 384
 385 bool MyPrintout::HasPage(int pageNum)
 386 {
 387     return (pageNum == 1 || pageNum == 2);
 388 }
 389
 390 void MyPrintout::DrawPageOne(wxDC *dc)
 391 {
 392 /* You might use THIS code if you were scaling
 393 * graphics of known size to fit on the page.
 394     */
 395     int w, h;
 396
 397     // We know the graphic is 200x200. If we didn't know this,
 398     // we'd need to calculate it.
 399     float maxX = 200;
 400     float maxY = 200;
 401
 402     // Let's have at least 50 device units margin
 403     float marginX = 50;
 404     float marginY = 50;
 405
 406     // Add the margin to the graphic size
 407     maxX += (2*marginX);
 408     maxY += (2*marginY);
 409
 410     // Get the size of the DC in pixels
 411     dc->GetSize(&w, &h);
 412
 413     // Calculate a suitable scaling factor
 414     float scaleX=(float)(w/maxX);
 415     float scaleY=(float)(h/maxY);
 416
 417     // Use x or y scaling factor, whichever fits on the DC
 418     float actualScale = wxMin(scaleX,scaleY);
 419
 420     // Calculate the position on the DC for centring the graphic
 421     float posX = (float)((w - (200*actualScale))/2.0);
 422     float posY = (float)((h - (200*actualScale))/2.0);
 423
 424     // Set the scale and origin
 425     dc->SetUserScale(actualScale, actualScale);
 426     dc->SetDeviceOrigin( (long)posX, (long)posY );
 427
 428     frame->Draw(*dc);
 429 }
 430
 431 void MyPrintout::DrawPageTwo(wxDC *dc)
 432 {
 433 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 434 * the screen text size. This page also draws lines of actual length 5cm
 435 * on the page.
 436     */
 437     // Get the logical pixels per inch of screen and printer
 438     int ppiScreenX, ppiScreenY;
 439     GetPPIScreen(&ppiScreenX, &ppiScreenY);
 440     int ppiPrinterX, ppiPrinterY;
 441     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 442
 443     // This scales the DC so that the printout roughly represents the
 444     // the screen scaling. The text point size _should_ be the right size
 445     // but in fact is too small for some reason. This is a detail that will
 446     // need to be addressed at some point but can be fudged for the
 447     // moment.
 448     float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 449
 450     // Now we have to check in case our real page size is reduced
 451     // (e.g. because we're drawing to a print preview memory DC)
 452     int pageWidth, pageHeight;
 453     int w, h;
 454     dc->GetSize(&w, &h);
 455     GetPageSizePixels(&pageWidth, &pageHeight);
 456
 457     // If printer pageWidth == current DC width, then this doesn't
 458     // change. But w might be the preview bitmap width, so scale down.
 459     float overallScale = scale * (float)(w/(float)pageWidth);
 460     dc->SetUserScale(overallScale, overallScale);
 461
 462     // Calculate conversion factor for converting millimetres into
 463     // logical units.
 464     // There are approx. 25.1 mm to the inch. There are ppi
 465     // device units to the inch. Therefore 1 mm corresponds to
 466     // ppi/25.1 device units. We also divide by the
 467     // screen-to-printer scaling factor, because we need to
 468     // unscale to pass logical units to DrawLine.
 469
 470     // Draw 50 mm by 50 mm L shape
 471     float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 472     float logUnits = (float)(50*logUnitsFactor);
 473     dc->SetPen(* wxBLACK_PEN);
 474     dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 475     dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 476
 477     dc->SetFont(* wxGetApp().m_testFont);
 478     dc->SetBackgroundMode(wxTRANSPARENT);
 479
 480     dc->DrawText("Some test text", 200, 200 );
 481
 482     { // GetTextExtent demo:
 483         wxString words[7] = {"This ", "is ", "GetTextExtent ", "testing ", "string. ", "Enjoy ", "it!"};
 484         long w, h;
 485         long x = 200, y= 250;
 486         wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
 487
 488         dc->SetFont(fnt);
 489         for (int i = 0; i < 7; i++) {
 490             dc->GetTextExtent(words[i], &w, &h);
 491             dc->DrawRectangle(x, y, w, h);
 492             dc->DrawText(words[i], x, y);
 493             x += w;
 494         }
 495         dc->SetFont(* wxGetApp().m_testFont);
 496     }
 497
 498     // TESTING
 499
 500     int leftMargin = 20;
 501     int rightMargin = 20;
 502     int topMargin = 20;
 503     int bottomMargin = 20;
 504
 505     int pageWidthMM, pageHeightMM;
 506     GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 507
 508     float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 509     float topMarginLogical = (float)(logUnitsFactor*topMargin);
 510     float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 511     float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 512
 513     dc->SetPen(* wxRED_PEN);
 514     dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 515         (long)rightMarginLogical, (long)topMarginLogical);
 516     dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 517         (long)rightMarginLogical,  (long)bottomMarginLogical);
 518
 519     WritePageHeader(this, dc, "A header", logUnitsFactor);
 520 }
 521
 522 // Writes a header on a page. Margin units are in millimetres.
 523 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
 524 {
 525 /*
 526 static wxFont *headerFont = (wxFont *) NULL;
 527 if (!headerFont)
 528 {
 529 headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 530 }
 531 dc->SetFont(headerFont);
 532     */
 533
 534     int pageWidthMM, pageHeightMM;
 535
 536     printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 537
 538     int leftMargin = 10;
 539     int topMargin = 10;
 540     int rightMargin = 10;
 541
 542     float leftMarginLogical = (float)(mmToLogical*leftMargin);
 543     float topMarginLogical = (float)(mmToLogical*topMargin);
 544     float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 545
 546     long xExtent, yExtent;
 547     dc->GetTextExtent(text, &xExtent, &yExtent);
 548     float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 549     dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 550
 551     dc->SetPen(* wxBLACK_PEN);
 552     dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 553         (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 554
 555     return TRUE;
 556 }