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 #include "wx/postscrp.h"
  26 #endif
  27
  28 #if !wxUSE_PRINTING_ARCHITECTURE
  29 #error You must set wxUSE_PRINTING_ARCHITECTURE to 1 in wx_setup.h to compile this demo.
  30 #endif
  31
  32 // Set this to 1 if you want to test PostScript printing under MSW.
  33 // However, you'll also need to edit src/msw/makefile.nt.
  34 #define wxTEST_POSTSCRIPT_IN_MSW 0
  35
  36 #include <ctype.h>
  37 #include "wx/metafile.h"
  38 #include "wx/print.h"
  39 #include "wx/printdlg.h"
  40
  41 #include "wx/accel.h"
  42
  43 #if wxTEST_POSTSCRIPT_IN_MSW
  44 #include "wx/generic/printps.h"
  45 #include "wx/generic/prntdlgg.h"
  46 #endif
  47
  48 #include "printing.h"
  49
  50 // Declare a frame
  51 MyFrame   *frame = (MyFrame *) NULL;
  52 int orientation = wxPORTRAIT;
  53
  54 // Main proc
  55 IMPLEMENT_APP(MyApp)
  56
  57 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  58 #include "folder.xpm"
  59 #endif
  60
  61 // Writes a header on a page. Margin units are in millimetres.
  62 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical);
  63
  64 MyApp::MyApp()
  65 {
  66 }
  67
  68 // The `main program' equivalent, creating the windows and returning the
  69 // main frame
  70 bool MyApp::OnInit(void)
  71 {
  72   m_testFont = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL);
  73
  74   // Create the main frame window
  75   frame = new MyFrame((wxFrame *) NULL, (char *) "wxWindows Printing Demo", wxPoint(0, 0), wxSize(400, 400));
  76
  77   // Give it a status line
  78   frame->CreateStatusBar(2);
  79
  80   // Load icon and bitmap
  81 #ifdef __WXMSW__
  82   frame->SetIcon(wxIcon("mondrian"));
  83 #endif
  84 #ifdef __X__
  85 //  frame->SetIcon(wxIcon(mondrian_bits, mondrian_width, mondrian_height));
  86 #endif
  87
  88   // Make a menubar
  89   wxMenu *file_menu = new wxMenu;
  90
  91   file_menu->Append(WXPRINT_PRINT, "&Print...",              "Print");
  92   file_menu->Append(WXPRINT_PRINT_SETUP, "Print &Setup...",              "Setup printer properties");
  93   file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...",              "Page setup");
  94   file_menu->Append(WXPRINT_PREVIEW, "Print Pre&view",              "Preview");
  95
  96     // Accelerators
  97     wxAcceleratorEntry entries[1];
  98     entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
  99     wxAcceleratorTable accel(1, entries);
 100     frame->SetAcceleratorTable(accel);
 101
 102 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 103   file_menu->AppendSeparator();
 104   file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...",              "Print (PostScript)");
 105   file_menu->Append(WXPRINT_PRINT_SETUP_PS, "Print Setup PostScript...",              "Setup printer properties (PostScript)");
 106   file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...",              "Page setup (PostScript)");
 107   file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript",              "Preview (PostScript)");
 108 #endif
 109   file_menu->AppendSeparator();
 110   file_menu->Append(WXPRINT_QUIT, "E&xit",                "Exit program");
 111
 112   wxMenu *help_menu = new wxMenu;
 113   help_menu->Append(WXPRINT_ABOUT, "&About",              "About this demo");
 114
 115   wxMenuBar *menu_bar = new wxMenuBar;
 116
 117   menu_bar->Append(file_menu, "&File");
 118   menu_bar->Append(help_menu, "&Help");
 119
 120   // Associate the menu bar with the frame
 121   frame->SetMenuBar(menu_bar);
 122
 123   MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 124
 125   // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 126   canvas->SetScrollbars(20, 20, 50, 50);
 127
 128   frame->canvas = canvas;
 129
 130   frame->Centre(wxBOTH);
 131   frame->Show(TRUE);
 132
 133   frame->SetStatusText("Printing demo");
 134
 135   SetTopWindow(frame);
 136
 137   return TRUE;
 138 }
 139
 140 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 141     EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 142     EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 143     EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 144     EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 145     EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 146     EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 147 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 148     EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 149     EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 150     EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 151     EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 152 #endif
 153 END_EVENT_TABLE()
 154
 155 // Define my frame constructor
 156 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 157   wxFrame(frame, -1, title, pos, size)
 158 {
 159   canvas = (MyCanvas *) NULL;
 160 }
 161
 162 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 163 {
 164       Close(TRUE);
 165 }
 166
 167 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 168 {
 169 #ifdef __WXMSW__
 170       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 171 #else
 172       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 173 #endif
 174       wxPrinter printer;
 175       MyPrintout printout("My printout");
 176       if (!printer.Print(this, &printout, TRUE))
 177         wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK);
 178 }
 179
 180 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 181 {
 182 #ifdef __WXMSW__
 183       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 184 #else
 185       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 186 #endif
 187       wxPrintData printData;
 188       printData.SetOrientation(orientation);
 189
 190       // Pass two printout objects: for preview, and possible printing.
 191       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 192       if (!preview->Ok())
 193       {
 194         delete preview;
 195         wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
 196         return;
 197       }
 198
 199       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 200       frame->Centre(wxBOTH);
 201       frame->Initialize();
 202       frame->Show(TRUE);
 203 }
 204
 205 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 206 {
 207 #ifdef __WXMSW__
 208       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 209 #else
 210       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 211 #endif
 212       wxPrintData data;
 213       data.SetOrientation(orientation);
 214
 215 #ifdef __WXMSW__
 216       wxPrintDialog printerDialog(this, & data);
 217 #else
 218       wxGenericPrintDialog printerDialog(this, & data);
 219 #endif
 220       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 221       printerDialog.ShowModal();
 222
 223       orientation = printerDialog.GetPrintData().GetOrientation();
 224 }
 225
 226 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 227 {
 228 #ifdef __WXMSW__
 229       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 230 #else
 231       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 232 #endif
 233       wxPageSetupData data;
 234       data.SetOrientation(orientation);
 235
 236 #ifdef __WXMSW__
 237       wxPageSetupDialog pageSetupDialog(this, & data);
 238 #else
 239       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 240 #endif
 241       pageSetupDialog.ShowModal();
 242
 243       data = pageSetupDialog.GetPageSetupData();
 244       orientation = data.GetOrientation();
 245 }
 246
 247 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 248 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 249 {
 250       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 251
 252       wxPostScriptPrinter printer;
 253       MyPrintout printout("My printout");
 254       printer.Print(this, &printout, TRUE);
 255 }
 256
 257 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 258 {
 259       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 260
 261       wxPrintData printData;
 262       printData.SetOrientation(orientation);
 263
 264       // Pass two printout objects: for preview, and possible printing.
 265       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 266       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 267       frame->Centre(wxBOTH);
 268       frame->Initialize();
 269       frame->Show(TRUE);
 270 }
 271
 272 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 273 {
 274       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 275
 276       wxPrintData data;
 277       data.SetOrientation(orientation);
 278
 279       wxGenericPrintDialog printerDialog(this, & data);
 280       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 281       printerDialog.ShowModal();
 282
 283       orientation = printerDialog.GetPrintData().GetOrientation();
 284 }
 285
 286 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 287 {
 288       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 289
 290       wxPageSetupData data;
 291       data.SetOrientation(orientation);
 292
 293       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 294       pageSetupDialog.ShowModal();
 295
 296       orientation = pageSetupDialog.GetPageSetupData().GetOrientation();
 297 }
 298 #endif
 299
 300
 301 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 302 {
 303       (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk",
 304             "About wxWindows printing demo", wxOK|wxCENTRE);
 305 }
 306
 307 void MyFrame::Draw(wxDC& dc)
 308 {
 309   dc.SetFont(* wxGetApp().m_testFont);
 310
 311   dc.SetBackgroundMode(wxTRANSPARENT);
 312
 313   dc.SetBrush(* wxCYAN_BRUSH);
 314   dc.SetPen(* wxRED_PEN);
 315
 316   dc.DrawRectangle(0, 30, 200, 100);
 317   dc.DrawText("Rectangle 200 by 100", 40, 40);
 318
 319   dc.DrawEllipse(50, 140, 100, 50);
 320
 321   dc.DrawText("Test message: this is in 10 point text", 10, 180);
 322
 323   dc.SetPen(* wxBLACK_PEN);
 324   dc.DrawLine(0, 0, 200, 200);
 325   dc.DrawLine(200, 0, 0, 200);
 326
 327 #if defined(__WXGTK__) || defined(__WXMOTIF__)
 328   wxIcon my_icon( folder_xpm );
 329 #elif defined(__WXMSW__)
 330   wxIcon my_icon( "mondrian" );
 331 #elif
 332 #error "Platform not supported."
 333 #endif
 334
 335   dc.DrawIcon( my_icon, 100, 100);
 336 }
 337
 338 void MyFrame::OnSize(wxSizeEvent& event )
 339 {
 340     wxFrame::OnSize(event);
 341 }
 342
 343 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 344         EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 345 END_EVENT_TABLE()
 346
 347 // Define a constructor for my canvas
 348 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 349  wxScrolledWindow(frame, -1, pos, size, style)
 350 {
 351 }
 352
 353 MyCanvas::~MyCanvas(void)
 354 {
 355 }
 356
 357 // Define the repainting behaviour
 358 void MyCanvas::OnDraw(wxDC& dc)
 359 {
 360   frame->Draw(dc);
 361 }
 362
 363 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 364 {
 365 }
 366
 367 bool MyFrame::OnClose(void)
 368 {
 369   Show(FALSE);
 370   delete wxGetApp().m_testFont;
 371
 372   return TRUE;
 373 }
 374
 375 bool MyPrintout::OnPrintPage(int page)
 376 {
 377   wxDC *dc = GetDC();
 378   if (dc)
 379   {
 380     if (page == 1)
 381       DrawPageOne(dc);
 382     else if (page == 2)
 383       DrawPageTwo(dc);
 384
 385     dc->SetDeviceOrigin(0, 0);
 386
 387     char buf[200];
 388     sprintf(buf, "PAGE %d", page);
 389     dc->DrawText(buf, 10, 10);
 390
 391     return TRUE;
 392   }
 393   else
 394     return FALSE;
 395 }
 396
 397 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 398 {
 399   if (!wxPrintout::OnBeginDocument(startPage, endPage))
 400     return FALSE;
 401
 402   return TRUE;
 403 }
 404
 405 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 406 {
 407   *minPage = 1;
 408   *maxPage = 2;
 409   *selPageFrom = 1;
 410   *selPageTo = 2;
 411 }
 412
 413 bool MyPrintout::HasPage(int pageNum)
 414 {
 415   return (pageNum == 1 || pageNum == 2);
 416 }
 417
 418 void MyPrintout::DrawPageOne(wxDC *dc)
 419 {
 420 /* You might use THIS code if you were scaling
 421  * graphics of known size to fit on the page.
 422  */
 423   int w, h;
 424
 425   // We know the graphic is 200x200. If we didn't know this,
 426   // we'd need to calculate it.
 427   float maxX = 200;
 428   float maxY = 200;
 429
 430   // Let's have at least 50 device units margin
 431   float marginX = 50;
 432   float marginY = 50;
 433
 434   // Add the margin to the graphic size
 435   maxX += (2*marginX);
 436   maxY += (2*marginY);
 437
 438   // Get the size of the DC in pixels
 439   dc->GetSize(&w, &h);
 440
 441   // Calculate a suitable scaling factor
 442   float scaleX=(float)(w/maxX);
 443   float scaleY=(float)(h/maxY);
 444
 445   // Use x or y scaling factor, whichever fits on the DC
 446   float actualScale = wxMin(scaleX,scaleY);
 447
 448   // Calculate the position on the DC for centring the graphic
 449   float posX = (float)((w - (200*actualScale))/2.0);
 450   float posY = (float)((h - (200*actualScale))/2.0);
 451
 452   // Set the scale and origin
 453   dc->SetUserScale(actualScale, actualScale);
 454   dc->SetDeviceOrigin( (long)posX, (long)posY );
 455
 456   frame->Draw(*dc);
 457 }
 458
 459 void MyPrintout::DrawPageTwo(wxDC *dc)
 460 {
 461 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 462  * the screen text size. This page also draws lines of actual length 5cm
 463  * on the page.
 464  */
 465   // Get the logical pixels per inch of screen and printer
 466   int ppiScreenX, ppiScreenY;
 467   GetPPIScreen(&ppiScreenX, &ppiScreenY);
 468   int ppiPrinterX, ppiPrinterY;
 469   GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 470
 471   // This scales the DC so that the printout roughly represents the
 472   // the screen scaling. The text point size _should_ be the right size
 473   // but in fact is too small for some reason. This is a detail that will
 474   // need to be addressed at some point but can be fudged for the
 475   // moment.
 476   float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 477
 478   // Now we have to check in case our real page size is reduced
 479   // (e.g. because we're drawing to a print preview memory DC)
 480   int pageWidth, pageHeight;
 481   int w, h;
 482   dc->GetSize(&w, &h);
 483   GetPageSizePixels(&pageWidth, &pageHeight);
 484
 485   // If printer pageWidth == current DC width, then this doesn't
 486   // change. But w might be the preview bitmap width, so scale down.
 487   float overallScale = scale * (float)(w/(float)pageWidth);
 488   dc->SetUserScale(overallScale, overallScale);
 489
 490   // Calculate conversion factor for converting millimetres into
 491   // logical units.
 492   // There are approx. 25.1 mm to the inch. There are ppi
 493   // device units to the inch. Therefore 1 mm corresponds to
 494   // ppi/25.1 device units. We also divide by the
 495   // screen-to-printer scaling factor, because we need to
 496   // unscale to pass logical units to DrawLine.
 497
 498   // Draw 50 mm by 50 mm L shape
 499   float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 500   float logUnits = (float)(50*logUnitsFactor);
 501   dc->SetPen(* wxBLACK_PEN);
 502   dc->DrawLine(50, 50, (long)(50.0 + logUnits), 50);
 503   dc->DrawLine(50, 50, 50, (long)(50.0 + logUnits));
 504
 505   dc->SetFont(* wxGetApp().m_testFont);
 506   dc->SetBackgroundMode(wxTRANSPARENT);
 507
 508   dc->DrawText("Some test text", 200, 200 );
 509
 510   // TESTING
 511
 512   int leftMargin = 20;
 513   int rightMargin = 20;
 514   int topMargin = 20;
 515   int bottomMargin = 20;
 516
 517   int pageWidthMM, pageHeightMM;
 518   GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 519
 520   float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 521   float topMarginLogical = (float)(logUnitsFactor*topMargin);
 522   float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 523   float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 524
 525   dc->SetPen(wxBLACK_PEN);
 526   dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 527                 (long)rightMarginLogical, (long)topMarginLogical);
 528   dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 529                  (long)rightMarginLogical,  (long)bottomMarginLogical);
 530
 531   WritePageHeader(this, dc, "A header", logUnitsFactor);
 532 }
 533
 534 // Writes a header on a page. Margin units are in millimetres.
 535 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
 536 {
 537   static wxFont *headerFont = (wxFont *) NULL;
 538   if (!headerFont)
 539   {
 540     headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 541   }
 542   dc->SetFont(headerFont);
 543
 544   int pageWidthMM, pageHeightMM;
 545
 546   printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 547
 548   int leftMargin = 10;
 549   int topMargin = 10;
 550   int rightMargin = 10;
 551
 552   float leftMarginLogical = (float)(mmToLogical*leftMargin);
 553   float topMarginLogical = (float)(mmToLogical*topMargin);
 554   float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 555
 556   long xExtent, yExtent;
 557   dc->GetTextExtent(text, &xExtent, &yExtent);
 558   float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 559   dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 560
 561   dc->SetPen(* wxBLACK_PEN);
 562   dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 563                 (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 564
 565   return TRUE;
 566 }