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