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