src/msw/printwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        printwin.cpp
   3 // Purpose:     wxWindowsPrinter framework
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "printwin.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #include "wx/defs.h"
  24
  25 #define WINDOWS_PRINTING    (wxTheApp->GetPrintMode() == wxPRINT_WINDOWS)
  26
  27 #ifndef WX_PRECOMP
  28 #include "wx/utils.h"
  29 #include "wx/dc.h"
  30 #include "wx/app.h"
  31 #include "wx/msgdlg.h"
  32 #endif
  33
  34 #include "wx/msw/printwin.h"
  35 #include "wx/dcprint.h"
  36 #include "wx/printdlg.h"
  37 #include "wx/msw/private.h"
  38
  39 #include <stdlib.h>
  40 #include <windows.h>
  41 #include <commdlg.h>
  42
  43 // Clash with Windows header files
  44 #ifdef StartDoc
  45 #undef StartDoc
  46 #endif
  47
  48 #ifndef __WIN32__
  49 #include <print.h>
  50 #endif
  51
  52 LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
  53
  54 #if !USE_SHARED_LIBRARY
  55 IMPLEMENT_DYNAMIC_CLASS(wxWindowsPrinter, wxPrinterBase)
  56 IMPLEMENT_CLASS(wxWindowsPrintPreview, wxPrintPreviewBase)
  57 #endif
  58
  59 /*
  60  * Printer
  61  */
  62
  63 wxWindowsPrinter::wxWindowsPrinter(wxPrintData *data):
  64   wxPrinterBase(data)
  65 {
  66   lpAbortProc = (WXFARPROC) MakeProcInstance((FARPROC) wxAbortProc, wxGetInstance());
  67 }
  68
  69 wxWindowsPrinter::~wxWindowsPrinter(void)
  70 {
  71   FreeProcInstance((FARPROC) lpAbortProc);
  72 }
  73
  74 bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt)
  75 {
  76   abortIt = FALSE;
  77   abortWindow = NULL;
  78
  79   if (!printout)
  80     return FALSE;
  81
  82   printout->SetIsPreview(FALSE);
  83   printout->OnPreparePrinting();
  84
  85   // Get some parameters from the printout, if defined
  86   int fromPage, toPage;
  87   int minPage, maxPage;
  88   printout->GetPageInfo(&minPage, &maxPage, &fromPage, &toPage);
  89
  90   if (maxPage == 0)
  91     return FALSE;
  92
  93   printData.SetMinPage(minPage);
  94   printData.SetMaxPage(maxPage);
  95   if (fromPage != 0)
  96     printData.SetFromPage(fromPage);
  97   if (toPage != 0)
  98     printData.SetToPage(toPage);
  99
 100   if (minPage != 0)
 101   {
 102     printData.EnablePageNumbers(TRUE);
 103     if (printData.GetFromPage() < printData.GetMinPage())
 104       printData.SetFromPage(printData.GetMinPage());
 105     else if (printData.GetFromPage() > printData.GetMaxPage())
 106       printData.SetFromPage(printData.GetMaxPage());
 107     if (printData.GetToPage() > printData.GetMaxPage())
 108       printData.SetToPage(printData.GetMaxPage());
 109     else if (printData.GetToPage() < printData.GetMinPage())
 110       printData.SetToPage(printData.GetMinPage());
 111   }
 112   else
 113     printData.EnablePageNumbers(FALSE);
 114
 115   // Create a suitable device context
 116   wxDC *dc = NULL;
 117   if (prompt)
 118   {
 119         wxPrintDialog dialog(parent, & printData);
 120         if (dialog.ShowModal() == wxID_OK)
 121         {
 122           dc = dialog.GetPrintDC();
 123           printData = dialog.GetPrintData();
 124         }
 125   }
 126   else
 127   {
 128       dc = new wxPrinterDC("", "", "", FALSE, printData.GetOrientation());
 129   }
 130
 131   // May have pressed cancel.
 132   if (!dc || !dc->Ok())
 133   {
 134     if (dc) delete dc;
 135     return FALSE;
 136   }
 137
 138   int logPPIScreenX = 0;
 139   int logPPIScreenY = 0;
 140   int logPPIPrinterX = 0;
 141   int logPPIPrinterY = 0;
 142
 143   HDC hdc = ::GetDC(NULL);
 144   logPPIScreenX = ::GetDeviceCaps(hdc, LOGPIXELSX);
 145   logPPIScreenY = ::GetDeviceCaps(hdc, LOGPIXELSY);
 146   ::ReleaseDC(NULL, hdc);
 147
 148   logPPIPrinterX = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSX);
 149   logPPIPrinterY = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSY);
 150   if (logPPIPrinterX == 0 || logPPIPrinterY == 0)
 151   {
 152     delete dc;
 153     return FALSE;
 154   }
 155
 156   printout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 157   printout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 158
 159   // Set printout parameters
 160   printout->SetDC(dc);
 161
 162   int w, h;
 163   long ww, hh;
 164   dc->GetSize(&w, &h);
 165   printout->SetPageSizePixels((int)w, (int)h);
 166   dc->GetSizeMM(&ww, &hh);
 167   printout->SetPageSizeMM((int)ww, (int)hh);
 168
 169   // Create an abort window
 170   wxBeginBusyCursor();
 171
 172   wxWindow *win = CreateAbortWindow(parent, printout);
 173   wxYield();
 174   ::SetAbortProc((HDC) dc->GetHDC(), (int (_stdcall *)(HDC, int)) lpAbortProc);
 175
 176   if (!win)
 177   {
 178     wxEndBusyCursor();
 179     wxMessageBox("Sorry, could not create an abort dialog.", "Print Error", wxOK, parent);
 180     delete dc;
 181   }
 182   abortWindow = win;
 183   abortWindow->Show(TRUE);
 184   wxYield();
 185
 186   printout->OnBeginPrinting();
 187
 188   bool keepGoing = TRUE;
 189
 190   int copyCount;
 191   for (copyCount = 1; copyCount <= printData.GetNoCopies(); copyCount ++)
 192   {
 193     if (!printout->OnBeginDocument(printData.GetFromPage(), printData.GetToPage()))
 194     {
 195       wxEndBusyCursor();
 196       wxMessageBox("Could not start printing.", "Print Error", wxOK, parent);
 197       break;
 198     }
 199     if (abortIt)
 200       break;
 201
 202     int pn;
 203     for (pn = printData.GetFromPage(); keepGoing && (pn <= printData.GetToPage()) && printout->HasPage(pn);
 204          pn++)
 205     {
 206       if (abortIt)
 207       {
 208         keepGoing = FALSE;
 209         break;
 210       }
 211       else
 212       {
 213 //        int dcID = ::SaveDC(dc->GetHDC());
 214         dc->StartPage();
 215         printout->OnPrintPage(pn);
 216         dc->EndPage();
 217 //        ::RestoreDC(dc->GetHDC(), dcID);
 218       }
 219     }
 220     printout->OnEndDocument();
 221   }
 222
 223   printout->OnEndPrinting();
 224
 225   if (abortWindow)
 226   {
 227     abortWindow->Show(FALSE);
 228     delete abortWindow;
 229     abortWindow = NULL;
 230   }
 231
 232   wxEndBusyCursor();
 233
 234   delete dc;
 235
 236   return TRUE;
 237 }
 238
 239 bool wxWindowsPrinter::PrintDialog(wxWindow *parent)
 240 {
 241   wxPrintDialog dialog(parent, & printData);
 242   return (dialog.ShowModal() == wxID_OK);
 243 }
 244
 245 bool wxWindowsPrinter::Setup(wxWindow *parent)
 246 {
 247   wxPrintDialog dialog(parent, & printData);
 248   dialog.GetPrintData().SetSetupDialog(TRUE);
 249   return (dialog.ShowModal() == wxID_OK);
 250 }
 251
 252 /*
 253  * Print preview
 254  */
 255
 256 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout, wxPrintout *printoutForPrinting, wxPrintData *data):
 257   wxPrintPreviewBase(printout, printoutForPrinting, data)
 258 {
 259   DetermineScaling();
 260 }
 261
 262 wxWindowsPrintPreview::~wxWindowsPrintPreview(void)
 263 {
 264 }
 265
 266 bool wxWindowsPrintPreview::Print(bool interactive)
 267 {
 268   if (!printPrintout)
 269     return FALSE;
 270   wxWindowsPrinter printer(&printData);
 271   return printer.Print(previewFrame, printPrintout, interactive);
 272 }
 273
 274 void wxWindowsPrintPreview::DetermineScaling(void)
 275 {
 276     HDC dc = ::GetDC(NULL);
 277     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
 278 //    int screenHeight = ::GetDeviceCaps(dc, VERTSIZE);
 279     int screenXRes = ::GetDeviceCaps(dc, HORZRES);
 280 //    int screenYRes = ::GetDeviceCaps(dc, VERTRES);
 281     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
 282     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
 283     previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 284
 285     ::ReleaseDC(NULL, dc);
 286
 287     // Get a device context for the currently selected printer
 288     wxPrinterDC printerDC("", "", "", FALSE, printData.GetOrientation());
 289
 290     int printerWidth = 150;
 291     int printerHeight = 250;
 292     int printerXRes = 1500;
 293     int printerYRes = 2500;
 294
 295     if (printerDC.GetHDC())
 296     {
 297       printerWidth = ::GetDeviceCaps((HDC) printerDC.GetHDC(), HORZSIZE);
 298       printerHeight = ::GetDeviceCaps((HDC) printerDC.GetHDC(), VERTSIZE);
 299       printerXRes = ::GetDeviceCaps((HDC) printerDC.GetHDC(), HORZRES);
 300       printerYRes = ::GetDeviceCaps((HDC) printerDC.GetHDC(), VERTRES);
 301
 302       int logPPIPrinterX = ::GetDeviceCaps((HDC) printerDC.GetHDC(), LOGPIXELSX);
 303       int logPPIPrinterY = ::GetDeviceCaps((HDC) printerDC.GetHDC(), LOGPIXELSY);
 304
 305       previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 306       previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 307
 308       if (logPPIPrinterX == 0 || logPPIPrinterY == 0 || printerWidth == 0 || printerHeight == 0)
 309         isOk = FALSE;
 310     }
 311     else
 312       isOk = FALSE;
 313
 314     pageWidth = printerXRes;
 315     pageHeight = printerYRes;
 316
 317     // At 100%, the page should look about page-size on the screen.
 318     previewScale = (float)((float)screenWidth/(float)printerWidth);
 319     previewScale = previewScale * (float)((float)screenXRes/(float)printerYRes);
 320 }
 321
 322 /****************************************************************************
 323
 324     FUNCTION: wxAbortProc()
 325
 326     PURPOSE:  Processes messages for the Abort Dialog box
 327
 328 ****************************************************************************/
 329
 330 LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
 331 {
 332     MSG msg;
 333
 334     if (!wxPrinterBase::abortWindow)              /* If the abort dialog isn't up yet */
 335         return(TRUE);
 336
 337     /* Process messages intended for the abort dialog box */
 338
 339     while (!wxPrinterBase::abortIt && PeekMessage(&msg, 0, 0, 0, TRUE))
 340         if (!IsDialogMessage((HWND) wxPrinterBase::abortWindow->GetHWND(), &msg)) {
 341             TranslateMessage(&msg);
 342             DispatchMessage(&msg);
 343         }
 344
 345     /* bAbort is TRUE (return is FALSE) if the user has aborted */
 346
 347     return (!wxPrinterBase::abortIt);
 348 }
 349