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 !USE_PRINTING_ARCHITECTURE
  29 #error You must set USE_PRINTING_ARCHITECTURE to 1 in wx_setup.h to compile this demo.
  30 #endif
  31
  32 #include <ctype.h>
  33 #include "wx/metafile.h"
  34 #include "wx/print.h"
  35 #include "wx/printdlg.h"
  36 #include "wx/generic/printps.h"
  37 #include "wx/generic/prntdlgg.h"
  38
  39 #include "printing.h"
  40
  41 // Declare a frame
  42 MyFrame   *frame = NULL;
  43 int orientation = wxPORTRAIT;
  44
  45 // Main proc
  46 IMPLEMENT_APP(MyApp)
  47
  48 // Must initialise these in OnInit, not statically
  49 wxPen     *red_pen;
  50 wxFont    *labelFont;
  51 wxFont    *itemFont;
  52
  53 float     zoom_factor = 1.0;
  54
  55 #ifdef __X__
  56 #include "aiai.xbm"
  57 #endif
  58
  59 #ifdef __WXGTK__
  60 #include "folder.xpm"
  61 #endif
  62
  63
  64 // Writes a header on a page. Margin units are in millimetres.
  65 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical);
  66
  67 MyApp::MyApp()
  68 {
  69 }
  70
  71 // The `main program' equivalent, creating the windows and returning the
  72 // main frame
  73 bool MyApp::OnInit(void)
  74 {
  75   // Create a red pen
  76   red_pen = new wxPen("RED", 3, wxSOLID);
  77
  78   // Create a small font
  79   itemFont = new wxFont(11, wxROMAN, wxNORMAL, wxNORMAL);
  80   labelFont = new wxFont(12, wxROMAN, wxITALIC, wxBOLD);
  81
  82   // Create the main frame window
  83   frame = new MyFrame(NULL, "wxWindows Printing Demo", wxPoint(0, 0), wxSize(400, 400));
  84
  85   // Give it a status line
  86   frame->CreateStatusBar(2);
  87
  88   // Load icon and bitmap
  89 #ifdef __WXMSW__
  90   frame->SetIcon(wxIcon("aiai_icn"));
  91 #endif
  92 #ifdef __X__
  93   frame->SetIcon(wxIcon(aiai_bits, aiai_width, aiai_height));
  94 #endif
  95
  96   // Make a menubar
  97   wxMenu *file_menu = new wxMenu;
  98
  99   file_menu->Append(WXPRINT_PRINT, "&Print...",              "Print");
 100   file_menu->Append(WXPRINT_PRINT_SETUP, "Print &Setup...",              "Setup printer properties");
 101   file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...",              "Page setup");
 102   file_menu->Append(WXPRINT_PREVIEW, "Print Pre&view",              "Preview");
 103
 104 #ifdef __WXMSW__
 105   file_menu->AppendSeparator();
 106   file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...",              "Print (PostScript)");
 107   file_menu->Append(WXPRINT_PRINT_SETUP_PS, "Print Setup PostScript...",              "Setup printer properties (PostScript)");
 108   file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...",              "Page setup (PostScript)");
 109   file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript",              "Preview (PostScript)");
 110 #endif
 111   file_menu->AppendSeparator();
 112   file_menu->Append(WXPRINT_QUIT, "E&xit",                "Exit program");
 113
 114   wxMenu *help_menu = new wxMenu;
 115   help_menu->Append(WXPRINT_ABOUT, "&About",              "About this demo");
 116
 117   wxMenuBar *menu_bar = new wxMenuBar;
 118
 119   menu_bar->Append(file_menu, "&File");
 120   menu_bar->Append(help_menu, "&Help");
 121
 122   // Associate the menu bar with the frame
 123   frame->SetMenuBar(menu_bar);
 124
 125   MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
 126
 127   // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 128   canvas->SetScrollbars(20, 20, 50, 50);
 129
 130   // This ensures that the fonts get created as _screen_
 131   // fonts, not printer fonts.
 132   canvas->SetFont(itemFont);
 133   canvas->SetFont(labelFont);
 134
 135   frame->canvas = canvas;
 136
 137   frame->Centre(wxBOTH);
 138   frame->Show(TRUE);
 139
 140   frame->SetStatusText("Printing demo");
 141
 142   SetTopWindow(frame);
 143
 144   return TRUE;
 145 }
 146
 147 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 148     EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
 149     EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
 150     EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
 151     EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
 152     EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
 153     EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
 154     EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
 155     EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
 156     EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
 157     EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
 158 END_EVENT_TABLE()
 159
 160 // Define my frame constructor
 161 MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 162   wxFrame(frame, -1, title, pos, size)
 163 {
 164   canvas = NULL;
 165 }
 166
 167 void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 168 {
 169       Close(TRUE);
 170 }
 171
 172 void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
 173 {
 174 #ifdef __WXMSW__
 175       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 176 #else
 177       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 178 #endif
 179       wxPrinter printer;
 180       MyPrintout printout("My printout");
 181       if (!printer.Print(this, &printout, TRUE))
 182         wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK);
 183 }
 184
 185 void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
 186 {
 187       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 188
 189       wxPostScriptPrinter printer;
 190       MyPrintout printout("My printout");
 191       printer.Print(this, &printout, TRUE);
 192 }
 193
 194 void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
 195 {
 196 #ifdef __WXMSW__
 197       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 198 #else
 199       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 200 #endif
 201       wxPrintData printData;
 202       printData.SetOrientation(orientation);
 203
 204       // Pass two printout objects: for preview, and possible printing.
 205       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 206       if (!preview->Ok())
 207       {
 208         delete preview;
 209         wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
 210         return;
 211       }
 212
 213       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 214       frame->Centre(wxBOTH);
 215       frame->Initialize();
 216       frame->Show(TRUE);
 217 }
 218
 219 void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
 220 {
 221       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 222
 223       wxPrintData printData;
 224       printData.SetOrientation(orientation);
 225
 226       // Pass two printout objects: for preview, and possible printing.
 227       wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData);
 228       wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
 229       frame->Centre(wxBOTH);
 230       frame->Initialize();
 231       frame->Show(TRUE);
 232 }
 233
 234 void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
 235 {
 236 #ifdef __WXMSW__
 237       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 238 #else
 239       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 240 #endif
 241       wxPrintData data;
 242       data.SetOrientation(orientation);
 243
 244 #ifdef __WXMSW__
 245       wxPrintDialog printerDialog(this, & data);
 246 #else
 247       wxGenericPrintDialog printerDialog(this, & data);
 248 #endif
 249       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 250       printerDialog.ShowModal();
 251
 252       orientation = printerDialog.GetPrintData().GetOrientation();
 253 }
 254
 255 void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
 256 {
 257 #ifdef __WXMSW__
 258       wxGetApp().SetPrintMode(wxPRINT_WINDOWS);
 259 #else
 260       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 261 #endif
 262       wxPageSetupData data;
 263       data.SetOrientation(orientation);
 264
 265 #ifdef __WXMSW__
 266       wxPageSetupDialog pageSetupDialog(this, & data);
 267 #else
 268       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 269 #endif
 270       pageSetupDialog.ShowModal();
 271
 272       data = pageSetupDialog.GetPageSetupData();
 273       orientation = data.GetOrientation();
 274 }
 275
 276 void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
 277 {
 278       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 279
 280       wxPrintData data;
 281       data.SetOrientation(orientation);
 282
 283       wxGenericPrintDialog printerDialog(this, & data);
 284       printerDialog.GetPrintData().SetSetupDialog(TRUE);
 285       printerDialog.ShowModal();
 286
 287       orientation = printerDialog.GetPrintData().GetOrientation();
 288 }
 289
 290 void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
 291 {
 292       wxGetApp().SetPrintMode(wxPRINT_POSTSCRIPT);
 293
 294       wxPageSetupData data;
 295       data.SetOrientation(orientation);
 296
 297       wxGenericPageSetupDialog pageSetupDialog(this, & data);
 298       pageSetupDialog.ShowModal();
 299
 300       orientation = pageSetupDialog.GetPageSetupData().GetOrientation();
 301 }
 302
 303 void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
 304 {
 305       (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk",
 306             "About wxWindows printing demo", wxOK|wxCENTRE);
 307 }
 308
 309 void MyFrame::Draw(wxDC& dc)
 310 {
 311   dc.SetFont(itemFont);
 312   dc.SetBackgroundMode(wxTRANSPARENT);
 313
 314   dc.SetBrush(wxCYAN_BRUSH);
 315   dc.SetPen(wxRED_PEN);
 316
 317   dc.DrawRectangle(0, 30, 200, 100);
 318   dc.DrawText("Rectangle 200 by 100", 40, 40);
 319
 320   dc.DrawEllipse(50, 140, 100, 50);
 321
 322   dc.DrawText("Test message: this is in 11 point text", 10, 180);
 323
 324   dc.SetPen(wxBLACK_PEN);
 325   dc.DrawLine(0, 0, 200, 200);
 326   dc.DrawLine(200, 0, 0, 200);
 327
 328   wxIcon my_icon( folder_xpm );
 329   dc.DrawIcon( my_icon, 100, 100, TRUE );
 330 }
 331
 332 void MyFrame::OnSize(wxSizeEvent& event )
 333 {
 334     wxFrame::OnSize(event);
 335 }
 336
 337 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 338         EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 339 END_EVENT_TABLE()
 340
 341 // Define a constructor for my canvas
 342 MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
 343  wxScrolledWindow(frame, -1, pos, size, style)
 344 {
 345 }
 346
 347 MyCanvas::~MyCanvas(void)
 348 {
 349 }
 350
 351 // Define the repainting behaviour
 352 void MyCanvas::OnDraw(wxDC& dc)
 353 {
 354   frame->Draw(dc);
 355 }
 356
 357 void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
 358 {
 359 }
 360
 361 // Define the behaviour for the frame closing
 362 // - must delete all frames except for the main one.
 363 bool MyFrame::OnClose(void)
 364 {
 365   Show(FALSE);
 366
 367   return TRUE;
 368 }
 369
 370 bool MyPrintout::OnPrintPage(int page)
 371 {
 372   wxDC *dc = GetDC();
 373   if (dc)
 374   {
 375     if (page == 1)
 376       DrawPageOne(dc);
 377     else if (page == 2)
 378       DrawPageTwo(dc);
 379
 380     dc->SetDeviceOrigin(0, 0);
 381
 382     char buf[200];
 383     sprintf(buf, "PAGE %d", page);
 384     dc->DrawText(buf, 10, 10);
 385
 386     return TRUE;
 387   }
 388   else
 389     return FALSE;
 390 }
 391
 392 bool MyPrintout::OnBeginDocument(int startPage, int endPage)
 393 {
 394   if (!wxPrintout::OnBeginDocument(startPage, endPage))
 395     return FALSE;
 396
 397   return TRUE;
 398 }
 399
 400 void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 401 {
 402   *minPage = 1;
 403   *maxPage = 2;
 404   *selPageFrom = 1;
 405   *selPageTo = 2;
 406 }
 407
 408 bool MyPrintout::HasPage(int pageNum)
 409 {
 410   return (pageNum == 1 || pageNum == 2);
 411 }
 412
 413 void MyPrintout::DrawPageOne(wxDC *dc)
 414 {
 415 /* You might use THIS code if you were scaling
 416  * graphics of known size to fit on the page.
 417  */
 418   int w, h;
 419
 420   // We know the graphic is 200x200. If we didn't know this,
 421   // we'd need to calculate it.
 422   float maxX = 200;
 423   float maxY = 200;
 424
 425   // Let's have at least 50 device units margin
 426   float marginX = 50;
 427   float marginY = 50;
 428
 429   // Add the margin to the graphic size
 430   maxX += (2*marginX);
 431   maxY += (2*marginY);
 432
 433   // Get the size of the DC in pixels
 434   dc->GetSize(&w, &h);
 435
 436   // Calculate a suitable scaling factor
 437   float scaleX=(float)(w/maxX);
 438   float scaleY=(float)(h/maxY);
 439
 440   // Use x or y scaling factor, whichever fits on the DC
 441   float actualScale = wxMin(scaleX,scaleY);
 442
 443   // Calculate the position on the DC for centring the graphic
 444   float posX = (float)((w - (200*actualScale))/2.0);
 445   float posY = (float)((h - (200*actualScale))/2.0);
 446
 447   // Set the scale and origin
 448   dc->SetUserScale(actualScale, actualScale);
 449   dc->SetDeviceOrigin( (long)posX, (long)posY );
 450
 451   frame->Draw(*dc);
 452 }
 453
 454 void MyPrintout::DrawPageTwo(wxDC *dc)
 455 {
 456 /* You might use THIS code to set the printer DC to ROUGHLY reflect
 457  * the screen text size. This page also draws lines of actual length 5cm
 458  * on the page.
 459  */
 460   // Get the logical pixels per inch of screen and printer
 461   int ppiScreenX, ppiScreenY;
 462   GetPPIScreen(&ppiScreenX, &ppiScreenY);
 463   int ppiPrinterX, ppiPrinterY;
 464   GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
 465
 466   // This scales the DC so that the printout roughly represents the
 467   // the screen scaling. The text point size _should_ be the right size
 468   // but in fact is too small for some reason. This is a detail that will
 469   // need to be addressed at some point but can be fudged for the
 470   // moment.
 471   float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
 472
 473   // Now we have to check in case our real page size is reduced
 474   // (e.g. because we're drawing to a print preview memory DC)
 475   int pageWidth, pageHeight;
 476   int w, h;
 477   dc->GetSize(&w, &h);
 478   GetPageSizePixels(&pageWidth, &pageHeight);
 479
 480   // If printer pageWidth == current DC width, then this doesn't
 481   // change. But w might be the preview bitmap width, so scale down.
 482   float overallScale = scale * (float)(w/(float)pageWidth);
 483   dc->SetUserScale(overallScale, overallScale);
 484
 485   // Calculate conversion factor for converting millimetres into
 486   // logical units.
 487   // There are approx. 25.1 mm to the inch. There are ppi
 488   // device units to the inch. Therefore 1 mm corresponds to
 489   // ppi/25.1 device units. We also divide by the
 490   // screen-to-printer scaling factor, because we need to
 491   // unscale to pass logical units to DrawLine.
 492
 493   // Draw 50 mm by 50 mm L shape
 494   float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
 495   float logUnits = (float)(50*logUnitsFactor);
 496   dc->SetPen(wxBLACK_PEN);
 497   dc->DrawLine(50, 50, (long)(50.0 + logUnits), 50);
 498   dc->DrawLine(50, 50, 50, (long)(50.0 + logUnits));
 499
 500   dc->SetFont(itemFont);
 501   dc->SetBackgroundMode(wxTRANSPARENT);
 502
 503   dc->DrawText("Some test text", 200, 200 );
 504
 505   // TESTING
 506
 507   int leftMargin = 20;
 508   int rightMargin = 20;
 509   int topMargin = 20;
 510   int bottomMargin = 20;
 511
 512   int pageWidthMM, pageHeightMM;
 513   GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 514
 515   float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
 516   float topMarginLogical = (float)(logUnitsFactor*topMargin);
 517   float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
 518   float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
 519
 520   dc->SetPen(wxBLACK_PEN);
 521   dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
 522                 (long)rightMarginLogical, (long)topMarginLogical);
 523   dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
 524                  (long)rightMarginLogical,  (long)bottomMarginLogical);
 525
 526   WritePageHeader(this, dc, "A header", logUnitsFactor);
 527 }
 528
 529 // Writes a header on a page. Margin units are in millimetres.
 530 bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
 531 {
 532   static wxFont *headerFont = NULL;
 533   if (!headerFont)
 534   {
 535     headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
 536   }
 537   dc->SetFont(headerFont);
 538
 539   int pageWidthMM, pageHeightMM;
 540
 541   printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
 542
 543   int leftMargin = 10;
 544   int topMargin = 10;
 545   int rightMargin = 10;
 546
 547   float leftMarginLogical = (float)(mmToLogical*leftMargin);
 548   float topMarginLogical = (float)(mmToLogical*topMargin);
 549   float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
 550
 551   long xExtent, yExtent;
 552   dc->GetTextExtent(text, &xExtent, &yExtent);
 553   float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
 554   dc->DrawText(text, (long)xPos, (long)topMarginLogical);
 555
 556   dc->SetPen(wxBLACK_PEN);
 557   dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
 558                 (long)rightMarginLogical, (long)topMarginLogical+yExtent );
 559
 560   return TRUE;
 561 }