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 wx_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 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 135     EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 136     EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 137     EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 138     EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 139     EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 140     EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 141 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 142     EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 143     EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 144     EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 145     EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 146 #endif
 147 END_EVENT_TABLE()
 148
 149 // Define my frame constructor
 150 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 151   wxFrame(frame, -1, title, pos, size)
 152 {
 153   canvas = (MyCanvas *) NULL;
 154 }
 155
 156 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 157 {
 158       Close(TRUE);
 159 }
 160
 161 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 162 {
 163       wxPrinter printer;
 164       MyPrintout printout("My printout");
 165       if (!printer.Print(this, &printout, TRUE))
 166         wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK);
 167 }
 168
 169 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 170 {
 171       wxPrintData printData;
 172       printData.SetOrientation(orientation);
 173
 174       // Pass two printout objects: for preview, and possible printing.
 175       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 176       if (!preview->Ok())
 177       {
 178         delete preview;
 179         wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
 180         return;
 181       }
 182
 183       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 184       frame->Centre(wxBOTH);
 185       frame->Initialize();
 186       frame->Show(TRUE);
 187 }
 188
 189 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 190 {
 191       wxPrintData data;
 192       data.SetOrientation(orientation);
 193
 194       wxPrintDialog printerDialog(this, & data);
 195
 196       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 197       printerDialog.ShowModal();
 198
 199       orientation = printerDialog.GetPrintData().GetOrientation();
 200 }
 201
 202 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 203 {
 204       wxPageSetupData data;
 205       data.SetOrientation(orientation);
 206
 207       wxPageSetupDialog pageSetupDialog(this, & data);
 208       pageSetupDialog.ShowModal();
 209
 210       data = pageSetupDialog.GetPageSetupData();
 211       orientation = data.GetOrientation();
 212 }
 213
 214 #if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
 215 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 216 {
 217       wxPostScriptPrinter printer;
 218       MyPrintout printout("My printout");
 219       printer.Print(this, &printout, TRUE);
 220 }
 221
 222 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 223 {
 224       wxPrintData printData;
 225       printData.SetOrientation(orientation);
 226
 227       // Pass two printout objects: for preview, and possible printing.
 228       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 229       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 230       frame->Centre(wxBOTH);
 231       frame->Initialize();
 232       frame->Show(TRUE);
 233 }
 234
 235 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 236 {
 237       wxPrintData data;
 238       data.SetOrientation(orientation);
 239
 240       wxGenericPrintDialog printerDialog(this, & data);
 241       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 242       printerDialog.ShowModal();
 243
 244       orientation = printerDialog.GetPrintData().GetOrientation();
 245 }
 246
 247 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 248 {
 249       wxPageSetupData data;
 250       data.SetOrientation(orientation);
 251
 252       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 253       pageSetupDialog.ShowModal();
 254
 255       orientation = pageSetupDialog.GetPageSetupData().GetOrientation();
 256 }
 257 #endif
 258
 259
 260 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 261 {
 262       (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk",
 263             "About wxWindows printing demo", wxOK|wxCENTRE);
 264 }
 265
 266 void MyFrame::Draw(wxDC& dc)
 267 {
 268   dc.SetFont(* wxGetApp().m_testFont);
 269
 270   dc.SetBackgroundMode(wxTRANSPARENT);
 271
 272   dc.SetBrush(* wxCYAN_BRUSH);
 273   dc.SetPen(* wxRED_PEN);
 274
 275   dc.DrawRectangle(0, 30, 200, 100);
 276   dc.DrawText("Rectangle 200 by 100", 40, 40);
 277
 278   dc.DrawEllipse(50, 140, 100, 50);
 279
 280   dc.DrawText("Test message: this is in 10 point text", 10, 180);
 281
 282   dc.SetPen(* wxBLACK_PEN);
 283   dc.DrawLine(0, 0, 200, 200);
 284   dc.DrawLine(200, 0, 0, 200);
 285
 286   wxIcon my_icon = wxICON(mondrian) ;
 287
 288   dc.DrawIcon( my_icon, 100, 100);
 289 }
 290
 291 void MyFrame::OnSize(wxSizeEvent& event )
 292 {
 293     wxFrame::OnSize(event);
 294 }
 295
 296 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 297         EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 298 END_EVENT_TABLE()
 299
 300 // Define a constructor for my canvas
 301 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 302  wxScrolledWindow(frame, -1, pos, size, style)
 303 {
 304 }
 305
 306 MyCanvas::~MyCanvas(void)
 307 {
 308 }
 309
 310 // Define the repainting behaviour
 311 void MyCanvas::OnDraw(wxDC& dc)
 312 {
 313   frame->Draw(dc);
 314 }
 315
 316 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 317 {
 318 }
 319
 320 bool MyFrame::OnClose(void)
 321 {
 322   Show(FALSE);
 323   delete wxGetApp().m_testFont;
 324
 325   return TRUE;
 326 }
 327
 328 bool MyPrintout::OnPrintPage(int page)
 329 {
 330   wxDC *dc = GetDC();
 331   if (dc)
 332   {
 333     if (page == 1)
 334       DrawPageOne(dc);
 335     else if (page == 2)
 336       DrawPageTwo(dc);
 337
 338     dc->SetDeviceOrigin(0, 0);
 339     dc->SetUserScale(1.0, 1.0);
 340
 341     char buf[200];
 342     sprintf(buf, "PAGE %d", page);
 343     dc->DrawText(buf, 10, 10);
 344
 345     return TRUE;
 346   }
 347   else
 348     return FALSE;
 349 }
 350
 351 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 352 {
 353   if (!wxPrintout::OnBeginDocument(startPage, endPage))
 354     return FALSE;
 355
 356   return TRUE;
 357 }
 358
 359 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 360 {
 361   *minPage = 1;
 362   *maxPage = 2;
 363   *selPageFrom = 1;
 364   *selPageTo = 2;
 365 }
 366
 367 bool MyPrintout::HasPage(int pageNum)
 368 {
 369   return (pageNum == 1 || pageNum == 2);
 370 }
 371
 372 void MyPrintout::DrawPageOne(wxDC *dc)
 373 {
 374 /* You might use THIS code if you were scaling
 375  * graphics of known size to fit on the page.
 376  */
 377   int w, h;
 378
 379   // We know the graphic is 200x200. If we didn't know this,
 380   // we'd need to calculate it.
 381   float maxX = 200;
 382   float maxY = 200;
 383
 384   // Let's have at least 50 device units margin
 385   float marginX = 50;
 386   float marginY = 50;
 387
 388   // Add the margin to the graphic size
 389   maxX += (2*marginX);
 390   maxY += (2*marginY);
 391
 392   // Get the size of the DC in pixels
 393   dc->GetSize(&w, &h);
 394
 395   // Calculate a suitable scaling factor
 396   float scaleX=(float)(w/maxX);
 397   float scaleY=(float)(h/maxY);
 398
 399   // Use x or y scaling factor, whichever fits on the DC
 400   float actualScale = wxMin(scaleX,scaleY);
 401
 402   // Calculate the position on the DC for centring the graphic
 403   float posX = (float)((w - (200*actualScale))/2.0);
 404   float posY = (float)((h - (200*actualScale))/2.0);
 405
 406   // Set the scale and origin
 407   dc->SetUserScale(actualScale, actualScale);
 408   dc->SetDeviceOrigin( (long)posX, (long)posY );
 409
 410   frame->Draw(*dc);
 411 }
 412
 413 void MyPrintout::DrawPageTwo(wxDC *dc)
 414 {
 415 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 416  * the screen text size. This page also draws lines of actual length 5cm
 417  * on the page.
 418  */
 419   // Get the logical pixels per inch of screen and printer
 420   int ppiScreenX, ppiScreenY;
 421   GetPPIScreen(&ppiScreenX, &ppiScreenY);
 422   int ppiPrinterX, ppiPrinterY;
 423   GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 424
 425   // This scales the DC so that the printout roughly represents the
 426   // the screen scaling. The text point size _should_ be the right size
 427   // but in fact is too small for some reason. This is a detail that will
 428   // need to be addressed at some point but can be fudged for the
 429   // moment.
 430   float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 431
 432   // Now we have to check in case our real page size is reduced
 433   // (e.g. because we're drawing to a print preview memory DC)
 434   int pageWidth, pageHeight;
 435   int w, h;
 436   dc->GetSize(&w, &h);
 437   GetPageSizePixels(&pageWidth, &pageHeight);
 438
 439   // If printer pageWidth == current DC width, then this doesn't
 440   // change. But w might be the preview bitmap width, so scale down.
 441   float overallScale = scale * (float)(w/(float)pageWidth);
 442   dc->SetUserScale(overallScale, overallScale);
 443
 444   // Calculate conversion factor for converting millimetres into
 445   // logical units.
 446   // There are approx. 25.1 mm to the inch. There are ppi
 447   // device units to the inch. Therefore 1 mm corresponds to
 448   // ppi/25.1 device units. We also divide by the
 449   // screen-to-printer scaling factor, because we need to
 450   // unscale to pass logical units to DrawLine.
 451
 452   // Draw 50 mm by 50 mm L shape
 453   float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 454   float logUnits = (float)(50*logUnitsFactor);
 455   dc->SetPen(* wxBLACK_PEN);
 456   dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
 457   dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
 458
 459   dc->SetFont(* wxGetApp().m_testFont);
 460   dc->SetBackgroundMode(wxTRANSPARENT);
 461
 462   dc->DrawText("Some test text", 200, 200 );
 463
 464   // TESTING
 465
 466   int leftMargin = 20;
 467   int rightMargin = 20;
 468   int topMargin = 20;
 469   int bottomMargin = 20;
 470
 471   int pageWidthMM, pageHeightMM;
 472   GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 473
 474   float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 475   float topMarginLogical = (float)(logUnitsFactor*topMargin);
 476   float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 477   float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 478
 479   dc->SetPen(* wxRED_PEN);
 480   dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 481                 (long)rightMarginLogical, (long)topMarginLogical);
 482   dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 483                  (long)rightMarginLogical,  (long)bottomMarginLogical);
 484
 485   WritePageHeader(this, dc, "A header", logUnitsFactor);
 486 }
 487
 488 // Writes a header on a page. Margin units are in millimetres.
 489 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
 490 {
 491 /*
 492   static wxFont *headerFont = (wxFont *) NULL;
 493   if (!headerFont)
 494   {
 495     headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 496   }
 497   dc->SetFont(headerFont);
 498 */
 499
 500   int pageWidthMM, pageHeightMM;
 501
 502   printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 503
 504   int leftMargin = 10;
 505   int topMargin = 10;
 506   int rightMargin = 10;
 507
 508   float leftMarginLogical = (float)(mmToLogical*leftMargin);
 509   float topMarginLogical = (float)(mmToLogical*topMargin);
 510   float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 511
 512   long xExtent, yExtent;
 513   dc->GetTextExtent(text, &xExtent, &yExtent);
 514   float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 515   dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 516
 517   dc->SetPen(* wxBLACK_PEN);
 518   dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 519                 (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 520
 521   return TRUE;
 522 }