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 #ifndef __WXMSW__
  51 #include "mondrian.xpm"
  52 #endif
  53
  54 // Declare a frame
  55 MyFrame   *frame = (MyFrame *) NULL;
  56 int orientation = wxPORTRAIT;
  57
  58 // Main proc
  59 IMPLEMENT_APP(MyApp)
  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   frame->SetIcon( wxICON( mondrian) );
  82
  83   // Make a menubar
  84   wxMenu *file_menu = new wxMenu;
  85
  86   file_menu->Append(WXPRINT_PRINT, "&Print...",              "Print");
  87   file_menu->Append(WXPRINT_PRINT_SETUP, "Print &Setup...",              "Setup printer properties");
  88   file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...",              "Page setup");
  89   file_menu->Append(WXPRINT_PREVIEW, "Print Pre&view",              "Preview");
  90
  91     // Accelerators
  92     wxAcceleratorEntry entries[1];
  93     entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
  94     wxAcceleratorTable accel(1, entries);
  95     frame->SetAcceleratorTable(accel);
  96
  97 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
  98   file_menu->AppendSeparator();
  99   file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...",              "Print (PostScript)");
 100   file_menu->Append(WXPRINT_PRINT_SETUP_PS, "Print Setup PostScript...",              "Setup printer properties (PostScript)");
 101   file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...",              "Page setup (PostScript)");
 102   file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript",              "Preview (PostScript)");
 103 #endif
 104   file_menu->AppendSeparator();
 105   file_menu->Append(WXPRINT_QUIT, "E&xit",                "Exit program");
 106
 107   wxMenu *help_menu = new wxMenu;
 108   help_menu->Append(WXPRINT_ABOUT, "&About",              "About this demo");
 109
 110   wxMenuBar *menu_bar = new wxMenuBar;
 111
 112   menu_bar->Append(file_menu, "&File");
 113   menu_bar->Append(help_menu, "&Help");
 114
 115   // Associate the menu bar with the frame
 116   frame->SetMenuBar(menu_bar);
 117
 118   MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 119
 120   // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 121   canvas->SetScrollbars(20, 20, 50, 50);
 122
 123   frame->canvas = canvas;
 124
 125   frame->Centre(wxBOTH);
 126   frame->Show(TRUE);
 127
 128   frame->SetStatusText("Printing demo");
 129
 130   SetTopWindow(frame);
 131
 132   return TRUE;
 133 }
 134
 135 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 136     EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 137     EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 138     EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 139     EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 140     EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 141     EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 142 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 143     EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 144     EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 145     EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 146     EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 147 #endif
 148 END_EVENT_TABLE()
 149
 150 // Define my frame constructor
 151 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 152   wxFrame(frame, -1, title, pos, size)
 153 {
 154   canvas = (MyCanvas *) NULL;
 155 }
 156
 157 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 158 {
 159       Close(TRUE);
 160 }
 161
 162 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 163 {
 164 #ifdef __WXMSW__
 165       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 166 #else
 167       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 168 #endif
 169       wxPrinter printer;
 170       MyPrintout printout("My printout");
 171       if (!printer.Print(this, &printout, TRUE))
 172         wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK);
 173 }
 174
 175 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 176 {
 177 #ifdef __WXMSW__
 178       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 179 #else
 180       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 181 #endif
 182       wxPrintData printData;
 183       printData.SetOrientation(orientation);
 184
 185       // Pass two printout objects: for preview, and possible printing.
 186       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 187       if (!preview->Ok())
 188       {
 189         delete preview;
 190         wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
 191         return;
 192       }
 193
 194       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 195       frame->Centre(wxBOTH);
 196       frame->Initialize();
 197       frame->Show(TRUE);
 198 }
 199
 200 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 201 {
 202 #ifdef __WXMSW__
 203       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 204 #else
 205       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 206 #endif
 207       wxPrintData data;
 208       data.SetOrientation(orientation);
 209
 210 #ifdef __WXMSW__
 211       wxPrintDialog printerDialog(this, & data);
 212 #else
 213       wxGenericPrintDialog printerDialog(this, & data);
 214 #endif
 215       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 216       printerDialog.ShowModal();
 217
 218       orientation = printerDialog.GetPrintData().GetOrientation();
 219 }
 220
 221 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 222 {
 223 #ifdef __WXMSW__
 224       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 225 #else
 226       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 227 #endif
 228       wxPageSetupData data;
 229       data.SetOrientation(orientation);
 230
 231 #ifdef __WXMSW__
 232       wxPageSetupDialog pageSetupDialog(this, & data);
 233 #else
 234       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 235 #endif
 236       pageSetupDialog.ShowModal();
 237
 238       data = pageSetupDialog.GetPageSetupData();
 239       orientation = data.GetOrientation();
 240 }
 241
 242 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 243 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 244 {
 245       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 246
 247       wxPostScriptPrinter printer;
 248       MyPrintout printout("My printout");
 249       printer.Print(this, &printout, TRUE);
 250 }
 251
 252 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 253 {
 254       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 255
 256       wxPrintData printData;
 257       printData.SetOrientation(orientation);
 258
 259       // Pass two printout objects: for preview, and possible printing.
 260       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 261       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 262       frame->Centre(wxBOTH);
 263       frame->Initialize();
 264       frame->Show(TRUE);
 265 }
 266
 267 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 268 {
 269       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 270
 271       wxPrintData data;
 272       data.SetOrientation(orientation);
 273
 274       wxGenericPrintDialog printerDialog(this, & data);
 275       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 276       printerDialog.ShowModal();
 277
 278       orientation = printerDialog.GetPrintData().GetOrientation();
 279 }
 280
 281 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 282 {
 283       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 284
 285       wxPageSetupData data;
 286       data.SetOrientation(orientation);
 287
 288       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 289       pageSetupDialog.ShowModal();
 290
 291       orientation = pageSetupDialog.GetPageSetupData().GetOrientation();
 292 }
 293 #endif
 294
 295
 296 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 297 {
 298       (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk",
 299             "About wxWindows printing demo", wxOK|wxCENTRE);
 300 }
 301
 302 void MyFrame::Draw(wxDC& dc)
 303 {
 304   dc.SetFont(* wxGetApp().m_testFont);
 305
 306   dc.SetBackgroundMode(wxTRANSPARENT);
 307
 308   dc.SetBrush(* wxCYAN_BRUSH);
 309   dc.SetPen(* wxRED_PEN);
 310
 311   dc.DrawRectangle(0, 30, 200, 100);
 312   dc.DrawText("Rectangle 200 by 100", 40, 40);
 313
 314   dc.DrawEllipse(50, 140, 100, 50);
 315
 316   dc.DrawText("Test message: this is in 10 point text", 10, 180);
 317
 318   dc.SetPen(* wxBLACK_PEN);
 319   dc.DrawLine(0, 0, 200, 200);
 320   dc.DrawLine(200, 0, 0, 200);
 321
 322   wxIcon my_icon( wxICON(mondrian) );
 323
 324   dc.DrawIcon( my_icon, 100, 100);
 325 }
 326
 327 void MyFrame::OnSize(wxSizeEvent& event )
 328 {
 329     wxFrame::OnSize(event);
 330 }
 331
 332 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 333         EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 334 END_EVENT_TABLE()
 335
 336 // Define a constructor for my canvas
 337 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 338  wxScrolledWindow(frame, -1, pos, size, style)
 339 {
 340 }
 341
 342 MyCanvas::~MyCanvas(void)
 343 {
 344 }
 345
 346 // Define the repainting behaviour
 347 void MyCanvas::OnDraw(wxDC& dc)
 348 {
 349   frame->Draw(dc);
 350 }
 351
 352 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 353 {
 354 }
 355
 356 bool MyFrame::OnClose(void)
 357 {
 358   Show(FALSE);
 359   delete wxGetApp().m_testFont;
 360
 361   return TRUE;
 362 }
 363
 364 bool MyPrintout::OnPrintPage(int page)
 365 {
 366   wxDC *dc = GetDC();
 367   if (dc)
 368   {
 369     if (page == 1)
 370       DrawPageOne(dc);
 371     else if (page == 2)
 372       DrawPageTwo(dc);
 373
 374     dc->SetDeviceOrigin(0, 0);
 375     dc->SetUserScale(1.0, 1.0);
 376
 377     char buf[200];
 378     sprintf(buf, "PAGE %d", page);
 379     dc->DrawText(buf, 10, 10);
 380
 381     return TRUE;
 382   }
 383   else
 384     return FALSE;
 385 }
 386
 387 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 388 {
 389   if (!wxPrintout::OnBeginDocument(startPage, endPage))
 390     return FALSE;
 391
 392   return TRUE;
 393 }
 394
 395 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 396 {
 397   *minPage = 1;
 398   *maxPage = 2;
 399   *selPageFrom = 1;
 400   *selPageTo = 2;
 401 }
 402
 403 bool MyPrintout::HasPage(int pageNum)
 404 {
 405   return (pageNum == 1 || pageNum == 2);
 406 }
 407
 408 void MyPrintout::DrawPageOne(wxDC *dc)
 409 {
 410 /* You might use THIS code if you were scaling
 411  * graphics of known size to fit on the page.
 412  */
 413   int w, h;
 414
 415   // We know the graphic is 200x200. If we didn't know this,
 416   // we'd need to calculate it.
 417   float maxX = 200;
 418   float maxY = 200;
 419
 420   // Let's have at least 50 device units margin
 421   float marginX = 50;
 422   float marginY = 50;
 423
 424   // Add the margin to the graphic size
 425   maxX += (2*marginX);
 426   maxY += (2*marginY);
 427
 428   // Get the size of the DC in pixels
 429   dc->GetSize(&w, &h);
 430
 431   // Calculate a suitable scaling factor
 432   float scaleX=(float)(w/maxX);
 433   float scaleY=(float)(h/maxY);
 434
 435   // Use x or y scaling factor, whichever fits on the DC
 436   float actualScale = wxMin(scaleX,scaleY);
 437
 438   // Calculate the position on the DC for centring the graphic
 439   float posX = (float)((w - (200*actualScale))/2.0);
 440   float posY = (float)((h - (200*actualScale))/2.0);
 441
 442   // Set the scale and origin
 443   dc->SetUserScale(actualScale, actualScale);
 444   dc->SetDeviceOrigin( (long)posX, (long)posY );
 445
 446   frame->Draw(*dc);
 447 }
 448
 449 void MyPrintout::DrawPageTwo(wxDC *dc)
 450 {
 451 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 452  * the screen text size. This page also draws lines of actual length 5cm
 453  * on the page.
 454  */
 455   // Get the logical pixels per inch of screen and printer
 456   int ppiScreenX, ppiScreenY;
 457   GetPPIScreen(&ppiScreenX, &ppiScreenY);
 458   int ppiPrinterX, ppiPrinterY;
 459   GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 460
 461   // This scales the DC so that the printout roughly represents the
 462   // the screen scaling. The text point size _should_ be the right size
 463   // but in fact is too small for some reason. This is a detail that will
 464   // need to be addressed at some point but can be fudged for the
 465   // moment.
 466   float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 467
 468   // Now we have to check in case our real page size is reduced
 469   // (e.g. because we're drawing to a print preview memory DC)
 470   int pageWidth, pageHeight;
 471   int w, h;
 472   dc->GetSize(&w, &h);
 473   GetPageSizePixels(&pageWidth, &pageHeight);
 474
 475   // If printer pageWidth == current DC width, then this doesn't
 476   // change. But w might be the preview bitmap width, so scale down.
 477   float overallScale = scale * (float)(w/(float)pageWidth);
 478   dc->SetUserScale(overallScale, overallScale);
 479
 480   // Calculate conversion factor for converting millimetres into
 481   // logical units.
 482   // There are approx. 25.1 mm to the inch. There are ppi
 483   // device units to the inch. Therefore 1 mm corresponds to
 484   // ppi/25.1 device units. We also divide by the
 485   // screen-to-printer scaling factor, because we need to
 486   // unscale to pass logical units to DrawLine.
 487
 488   // Draw 50 mm by 50 mm L shape
 489   float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 490   float logUnits = (float)(50*logUnitsFactor);
 491   dc->SetPen(* wxBLACK_PEN);
 492   dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 493   dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 494
 495   dc->SetFont(* wxGetApp().m_testFont);
 496   dc->SetBackgroundMode(wxTRANSPARENT);
 497
 498   dc->DrawText("Some test text", 200, 200 );
 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 }