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 // Main proc
  58 IMPLEMENT_APP(MyApp)
  59
  60 // Writes a header on a page. Margin units are in millimetres.
  61 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical);
  62
  63 MyApp::MyApp()
  64 {
  65 }
  66
  67 // The `main program' equivalent, creating the windows and returning the
  68 // main frame
  69 bool MyApp::OnInit(void)
  70 {
  71   m_testFont = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL);
  72
  73   // Create the main frame window
  74   frame = new MyFrame((wxFrame *) NULL, (char *) "wxWindows Printing Demo", wxPoint(0, 0), wxSize(400, 400));
  75
  76   // Give it a status line
  77   frame->CreateStatusBar(2);
  78
  79   // Load icon and bitmap
  80   frame->SetIcon( wxICON( mondrian) );
  81
  82   // Make a menubar
  83   wxMenu *file_menu = new wxMenu;
  84
  85   file_menu->Append(WXPRINT_PRINT, "&Print...",              "Print");
  86   file_menu->Append(WXPRINT_PRINT_SETUP, "Print &Setup...",              "Setup printer properties");
  87   file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...",              "Page setup");
  88   file_menu->Append(WXPRINT_PREVIEW, "Print Pre&view",              "Preview");
  89
  90     // Accelerators
  91     wxAcceleratorEntry entries[1];
  92     entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
  93     wxAcceleratorTable accel(1, entries);
  94     frame->SetAcceleratorTable(accel);
  95
  96 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
  97   file_menu->AppendSeparator();
  98   file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...",              "Print (PostScript)");
  99   file_menu->Append(WXPRINT_PRINT_SETUP_PS, "Print Setup PostScript...",              "Setup printer properties (PostScript)");
 100   file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...",              "Page setup (PostScript)");
 101   file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript",              "Preview (PostScript)");
 102 #endif
 103   file_menu->AppendSeparator();
 104   file_menu->Append(WXPRINT_QUIT, "E&xit",                "Exit program");
 105
 106   wxMenu *help_menu = new wxMenu;
 107   help_menu->Append(WXPRINT_ABOUT, "&About",              "About this demo");
 108
 109   wxMenuBar *menu_bar = new wxMenuBar;
 110
 111   menu_bar->Append(file_menu, "&File");
 112   menu_bar->Append(help_menu, "&Help");
 113
 114   // Associate the menu bar with the frame
 115   frame->SetMenuBar(menu_bar);
 116
 117   MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 118
 119   // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 120   canvas->SetScrollbars(20, 20, 50, 50);
 121
 122   frame->canvas = canvas;
 123
 124   frame->Centre(wxBOTH);
 125   frame->Show(TRUE);
 126
 127   frame->SetStatusText("Printing demo");
 128
 129   SetTopWindow(frame);
 130
 131   return TRUE;
 132 }
 133
 134 int MyApp::OnExit()
 135 {
 136   delete wxGetApp().m_testFont;
 137   return 1;
 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       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       wxPrintData printData;
 178       printData.SetOrientation(orientation);
 179
 180       // Pass two printout objects: for preview, and possible printing.
 181       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 182       if (!preview->Ok())
 183       {
 184         delete preview;
 185         wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
 186         return;
 187       }
 188
 189       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 190       frame->Centre(wxBOTH);
 191       frame->Initialize();
 192       frame->Show(TRUE);
 193 }
 194
 195 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 196 {
 197       wxPrintData data;
 198       data.SetOrientation(orientation);
 199
 200       wxPrintDialog printerDialog(this, & data);
 201
 202       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 203       printerDialog.ShowModal();
 204
 205       orientation = printerDialog.GetPrintData().GetOrientation();
 206 }
 207
 208 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 209 {
 210       wxPageSetupData data;
 211       data.SetOrientation(orientation);
 212
 213       wxPageSetupDialog pageSetupDialog(this, & data);
 214       pageSetupDialog.ShowModal();
 215
 216       data = pageSetupDialog.GetPageSetupData();
 217       orientation = data.GetOrientation();
 218 }
 219
 220 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 221 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 222 {
 223       wxPostScriptPrinter printer;
 224       MyPrintout printout("My printout");
 225       printer.Print(this, &printout, TRUE);
 226 }
 227
 228 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 229 {
 230       wxPrintData printData;
 231       printData.SetOrientation(orientation);
 232
 233       // Pass two printout objects: for preview, and possible printing.
 234       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 235       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 236       frame->Centre(wxBOTH);
 237       frame->Initialize();
 238       frame->Show(TRUE);
 239 }
 240
 241 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 242 {
 243       wxPrintData data;
 244       data.SetOrientation(orientation);
 245
 246       wxGenericPrintDialog printerDialog(this, & data);
 247       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 248       printerDialog.ShowModal();
 249
 250       orientation = printerDialog.GetPrintData().GetOrientation();
 251 }
 252
 253 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 254 {
 255       wxPageSetupData data;
 256       data.SetOrientation(orientation);
 257
 258       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 259       pageSetupDialog.ShowModal();
 260
 261       orientation = pageSetupDialog.GetPageSetupData().GetOrientation();
 262 }
 263 #endif
 264
 265
 266 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 267 {
 268       (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk",
 269             "About wxWindows printing demo", wxOK|wxCENTRE);
 270 }
 271
 272 void MyFrame::Draw(wxDC& dc)
 273 {
 274   dc.SetFont(* wxGetApp().m_testFont);
 275
 276   dc.SetBackgroundMode(wxTRANSPARENT);
 277
 278   dc.SetBrush(* wxCYAN_BRUSH);
 279   dc.SetPen(* wxRED_PEN);
 280
 281   dc.DrawRectangle(0, 30, 200, 100);
 282   dc.DrawText("Rectangle 200 by 100", 40, 40);
 283
 284   dc.DrawEllipse(50, 140, 100, 50);
 285
 286   dc.DrawText("Test message: this is in 10 point text", 10, 180);
 287
 288   dc.SetPen(* wxBLACK_PEN);
 289   dc.DrawLine(0, 0, 200, 200);
 290   dc.DrawLine(200, 0, 0, 200);
 291
 292   wxIcon my_icon = wxICON(mondrian) ;
 293
 294   dc.DrawIcon( my_icon, 100, 100);
 295 }
 296
 297 void MyFrame::OnSize(wxSizeEvent& event )
 298 {
 299     wxFrame::OnSize(event);
 300 }
 301
 302 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 303         EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 304 END_EVENT_TABLE()
 305
 306 // Define a constructor for my canvas
 307 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 308  wxScrolledWindow(frame, -1, pos, size, style)
 309 {
 310 }
 311
 312 MyCanvas::~MyCanvas(void)
 313 {
 314 }
 315
 316 // Define the repainting behaviour
 317 void MyCanvas::OnDraw(wxDC& dc)
 318 {
 319   frame->Draw(dc);
 320 }
 321
 322 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 323 {
 324 }
 325
 326 bool MyPrintout::OnPrintPage(int page)
 327 {
 328   wxDC *dc = GetDC();
 329   if (dc)
 330   {
 331     if (page == 1)
 332       DrawPageOne(dc);
 333     else if (page == 2)
 334       DrawPageTwo(dc);
 335
 336     dc->SetDeviceOrigin(0, 0);
 337     dc->SetUserScale(1.0, 1.0);
 338
 339     char buf[200];
 340     sprintf(buf, "PAGE %d", page);
 341     dc->DrawText(buf, 10, 10);
 342
 343     return TRUE;
 344   }
 345   else
 346     return FALSE;
 347 }
 348
 349 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 350 {
 351   if (!wxPrintout::OnBeginDocument(startPage, endPage))
 352     return FALSE;
 353
 354   return TRUE;
 355 }
 356
 357 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 358 {
 359   *minPage = 1;
 360   *maxPage = 2;
 361   *selPageFrom = 1;
 362   *selPageTo = 2;
 363 }
 364
 365 bool MyPrintout::HasPage(int pageNum)
 366 {
 367   return (pageNum == 1 || pageNum == 2);
 368 }
 369
 370 void MyPrintout::DrawPageOne(wxDC *dc)
 371 {
 372 /* You might use THIS code if you were scaling
 373  * graphics of known size to fit on the page.
 374  */
 375   int w, h;
 376
 377   // We know the graphic is 200x200. If we didn't know this,
 378   // we'd need to calculate it.
 379   float maxX = 200;
 380   float maxY = 200;
 381
 382   // Let's have at least 50 device units margin
 383   float marginX = 50;
 384   float marginY = 50;
 385
 386   // Add the margin to the graphic size
 387   maxX += (2*marginX);
 388   maxY += (2*marginY);
 389
 390   // Get the size of the DC in pixels
 391   dc->GetSize(&w, &h);
 392
 393   // Calculate a suitable scaling factor
 394   float scaleX=(float)(w/maxX);
 395   float scaleY=(float)(h/maxY);
 396
 397   // Use x or y scaling factor, whichever fits on the DC
 398   float actualScale = wxMin(scaleX,scaleY);
 399
 400   // Calculate the position on the DC for centring the graphic
 401   float posX = (float)((w - (200*actualScale))/2.0);
 402   float posY = (float)((h - (200*actualScale))/2.0);
 403
 404   // Set the scale and origin
 405   dc->SetUserScale(actualScale, actualScale);
 406   dc->SetDeviceOrigin( (long)posX, (long)posY );
 407
 408   frame->Draw(*dc);
 409 }
 410
 411 void MyPrintout::DrawPageTwo(wxDC *dc)
 412 {
 413 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 414  * the screen text size. This page also draws lines of actual length 5cm
 415  * on the page.
 416  */
 417   // Get the logical pixels per inch of screen and printer
 418   int ppiScreenX, ppiScreenY;
 419   GetPPIScreen(&ppiScreenX, &ppiScreenY);
 420   int ppiPrinterX, ppiPrinterY;
 421   GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 422
 423   // This scales the DC so that the printout roughly represents the
 424   // the screen scaling. The text point size _should_ be the right size
 425   // but in fact is too small for some reason. This is a detail that will
 426   // need to be addressed at some point but can be fudged for the
 427   // moment.
 428   float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 429
 430   // Now we have to check in case our real page size is reduced
 431   // (e.g. because we're drawing to a print preview memory DC)
 432   int pageWidth, pageHeight;
 433   int w, h;
 434   dc->GetSize(&w, &h);
 435   GetPageSizePixels(&pageWidth, &pageHeight);
 436
 437   // If printer pageWidth == current DC width, then this doesn't
 438   // change. But w might be the preview bitmap width, so scale down.
 439   float overallScale = scale * (float)(w/(float)pageWidth);
 440   dc->SetUserScale(overallScale, overallScale);
 441
 442   // Calculate conversion factor for converting millimetres into
 443   // logical units.
 444   // There are approx. 25.1 mm to the inch. There are ppi
 445   // device units to the inch. Therefore 1 mm corresponds to
 446   // ppi/25.1 device units. We also divide by the
 447   // screen-to-printer scaling factor, because we need to
 448   // unscale to pass logical units to DrawLine.
 449
 450   // Draw 50 mm by 50 mm L shape
 451   float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 452   float logUnits = (float)(50*logUnitsFactor);
 453   dc->SetPen(* wxBLACK_PEN);
 454   dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 455   dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 456
 457   dc->SetFont(* wxGetApp().m_testFont);
 458   dc->SetBackgroundMode(wxTRANSPARENT);
 459
 460   dc->DrawText("Some test text", 200, 200 );
 461
 462   // TESTING
 463
 464   int leftMargin = 20;
 465   int rightMargin = 20;
 466   int topMargin = 20;
 467   int bottomMargin = 20;
 468
 469   int pageWidthMM, pageHeightMM;
 470   GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 471
 472   float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 473   float topMarginLogical = (float)(logUnitsFactor*topMargin);
 474   float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 475   float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 476
 477   dc->SetPen(* wxRED_PEN);
 478   dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 479                 (long)rightMarginLogical, (long)topMarginLogical);
 480   dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 481                  (long)rightMarginLogical,  (long)bottomMarginLogical);
 482
 483   WritePageHeader(this, dc, "A header", logUnitsFactor);
 484 }
 485
 486 // Writes a header on a page. Margin units are in millimetres.
 487 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
 488 {
 489 /*
 490   static wxFont *headerFont = (wxFont *) NULL;
 491   if (!headerFont)
 492   {
 493     headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 494   }
 495   dc->SetFont(headerFont);
 496 */
 497
 498   int pageWidthMM, pageHeightMM;
 499
 500   printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 501
 502   int leftMargin = 10;
 503   int topMargin = 10;
 504   int rightMargin = 10;
 505
 506   float leftMarginLogical = (float)(mmToLogical*leftMargin);
 507   float topMarginLogical = (float)(mmToLogical*topMargin);
 508   float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 509
 510   long xExtent, yExtent;
 511   dc->GetTextExtent(text, &xExtent, &yExtent);
 512   float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 513   dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 514
 515   dc->SetPen(* wxBLACK_PEN);
 516   dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 517                 (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 518
 519   return TRUE;
 520 }