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
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "printwin.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #include "wx/defs.h"
  32
  33 // Don't use the Windows printer if we're in wxUniv mode and using
  34 // the PostScript architecture
  35 #if wxUSE_PRINTING_ARCHITECTURE && (!defined(__WXUNIVERSAL__) || !wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW)
  36
  37 #ifndef WX_PRECOMP
  38     #include "wx/window.h"
  39     #include "wx/msw/private.h"
  40     #include "wx/utils.h"
  41     #include "wx/dc.h"
  42     #include "wx/app.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45 #endif
  46
  47 #include "wx/msw/printwin.h"
  48 #include "wx/dcprint.h"
  49 #include "wx/printdlg.h"
  50 #include "wx/log.h"
  51 #include "wx/msw/private.h"
  52
  53 #include <stdlib.h>
  54
  55 #include "wx/msw/private.h"
  56
  57 #include <commdlg.h>
  58
  59 #ifndef __WIN32__
  60     #include <print.h>
  61 #endif
  62
  63 // ---------------------------------------------------------------------------
  64 // private functions
  65 // ---------------------------------------------------------------------------
  66
  67 LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
  68
  69 // ---------------------------------------------------------------------------
  70 // wxWin macros
  71 // ---------------------------------------------------------------------------
  72
  73     IMPLEMENT_DYNAMIC_CLASS(wxWindowsPrinter, wxPrinterBase)
  74     IMPLEMENT_CLASS(wxWindowsPrintPreview, wxPrintPreviewBase)
  75
  76 // ===========================================================================
  77 // implementation
  78 // ===========================================================================
  79
  80 // ---------------------------------------------------------------------------
  81 // Printer
  82 // ---------------------------------------------------------------------------
  83
  84 wxWindowsPrinter::wxWindowsPrinter(wxPrintDialogData *data)
  85                 : wxPrinterBase(data)
  86 {
  87     m_lpAbortProc = (WXFARPROC) MakeProcInstance((FARPROC) wxAbortProc, wxGetInstance());
  88 }
  89
  90 wxWindowsPrinter::~wxWindowsPrinter()
  91 {
  92     // avoids warning about statement with no effect (FreeProcInstance
  93     // doesn't do anything under Win32)
  94 #if !defined(__WIN32__) && !defined(__NT__)
  95     FreeProcInstance((FARPROC) m_lpAbortProc);
  96 #endif
  97 }
  98
  99 bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt)
 100 {
 101     sm_abortIt = false;
 102     sm_abortWindow = NULL;
 103
 104     if (!printout)
 105     {
 106         sm_lastError = wxPRINTER_ERROR;
 107         return false;
 108     }
 109
 110     printout->SetIsPreview(false);
 111
 112     if (m_printDialogData.GetMinPage() < 1)
 113         m_printDialogData.SetMinPage(1);
 114     if (m_printDialogData.GetMaxPage() < 1)
 115         m_printDialogData.SetMaxPage(9999);
 116
 117     // Create a suitable device context
 118     wxDC *dc wxDUMMY_INITIALIZE(NULL);
 119     if (prompt)
 120     {
 121         dc = PrintDialog(parent);
 122         if (!dc)
 123             return false;
 124     }
 125     else
 126     {
 127         dc = new wxPrinterDC(m_printDialogData.GetPrintData());
 128     }
 129
 130     // May have pressed cancel.
 131     if (!dc || !dc->Ok())
 132     {
 133         if (dc) delete dc;
 134         return false;
 135     }
 136
 137     HDC hdc = ::GetDC(NULL);
 138     int logPPIScreenX = ::GetDeviceCaps(hdc, LOGPIXELSX);
 139     int logPPIScreenY = ::GetDeviceCaps(hdc, LOGPIXELSY);
 140     ::ReleaseDC(NULL, hdc);
 141
 142     int logPPIPrinterX = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSX);
 143     int logPPIPrinterY = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSY);
 144     if (logPPIPrinterX == 0 || logPPIPrinterY == 0)
 145     {
 146         delete dc;
 147         sm_lastError = wxPRINTER_ERROR;
 148         return false;
 149     }
 150
 151     printout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 152     printout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 153
 154     // Set printout parameters
 155     printout->SetDC(dc);
 156
 157     int w, h;
 158     dc->GetSize(&w, &h);
 159     printout->SetPageSizePixels((int)w, (int)h);
 160
 161     dc->GetSizeMM(&w, &h);
 162     printout->SetPageSizeMM((int)w, (int)h);
 163
 164     // Create an abort window
 165     wxBusyCursor busyCursor;
 166
 167     printout->OnPreparePrinting();
 168
 169     // Get some parameters from the printout, if defined
 170     int fromPage, toPage;
 171     int minPage, maxPage;
 172     printout->GetPageInfo(&minPage, &maxPage, &fromPage, &toPage);
 173
 174     if (maxPage == 0)
 175     {
 176         sm_lastError = wxPRINTER_ERROR;
 177         return false;
 178     }
 179
 180     // Only set min and max, because from and to have been
 181     // set by the user
 182     m_printDialogData.SetMinPage(minPage);
 183     m_printDialogData.SetMaxPage(maxPage);
 184
 185     wxWindow *win = CreateAbortWindow(parent, printout);
 186     wxYield();
 187
 188 #if defined(__BORLANDC__) || defined(__GNUWIN32__) || defined(__SALFORDC__) || !defined(__WIN32__)
 189 #ifdef STRICT
 190     ::SetAbortProc((HDC) dc->GetHDC(), (ABORTPROC) m_lpAbortProc);
 191 #else
 192     ::SetAbortProc((HDC) dc->GetHDC(), (FARPROC) m_lpAbortProc);
 193 #endif
 194 #else
 195     ::SetAbortProc((HDC) dc->GetHDC(), (int (_stdcall *)
 196         // cast it to right type only if required
 197         // FIXME it's really cdecl and we're casting it to stdcall - either there is
 198         //       something I don't understand or it will crash at first usage
 199 #ifdef STRICT
 200         (HDC, int)
 201 #else
 202         ()
 203 #endif
 204         )m_lpAbortProc);
 205 #endif
 206
 207     if (!win)
 208     {
 209         wxLogDebug(wxT("Could not create an abort dialog."));
 210         sm_lastError = wxPRINTER_ERROR;
 211
 212         delete dc;
 213     }
 214     sm_abortWindow = win;
 215     sm_abortWindow->Show();
 216     wxSafeYield();
 217
 218     printout->OnBeginPrinting();
 219
 220     sm_lastError = wxPRINTER_NO_ERROR;
 221
 222     int minPageNum = minPage, maxPageNum = maxPage;
 223
 224     if ( !m_printDialogData.GetAllPages() )
 225     {
 226         minPageNum = m_printDialogData.GetFromPage();
 227         maxPageNum = m_printDialogData.GetToPage();
 228     }
 229
 230     int copyCount;
 231     for ( copyCount = 1;
 232           copyCount <= m_printDialogData.GetNoCopies();
 233           copyCount++ )
 234     {
 235         if ( !printout->OnBeginDocument(minPageNum, maxPageNum) )
 236         {
 237             wxLogError(_("Could not start printing."));
 238             sm_lastError = wxPRINTER_ERROR;
 239             break;
 240         }
 241         if (sm_abortIt)
 242         {
 243             sm_lastError = wxPRINTER_CANCELLED;
 244             break;
 245         }
 246
 247         int pn;
 248
 249         for ( pn = minPageNum;
 250               pn <= maxPageNum && printout->HasPage(pn);
 251               pn++ )
 252         {
 253             if ( sm_abortIt )
 254             {
 255                 sm_lastError = wxPRINTER_CANCELLED;
 256                 break;
 257             }
 258
 259             dc->StartPage();
 260             bool cont = printout->OnPrintPage(pn);
 261             dc->EndPage();
 262
 263             if ( !cont )
 264             {
 265                 sm_lastError = wxPRINTER_CANCELLED;
 266                 break;
 267             }
 268         }
 269
 270         printout->OnEndDocument();
 271     }
 272
 273     printout->OnEndPrinting();
 274
 275     if (sm_abortWindow)
 276     {
 277         sm_abortWindow->Show(false);
 278         delete sm_abortWindow;
 279         sm_abortWindow = NULL;
 280     }
 281
 282     delete dc;
 283
 284     return (sm_lastError == wxPRINTER_NO_ERROR);
 285 }
 286
 287 wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
 288 {
 289     wxDC* dc = (wxDC*) NULL;
 290
 291     wxPrintDialog dialog(parent, & m_printDialogData);
 292     int ret = dialog.ShowModal();
 293
 294     if (ret == wxID_OK)
 295     {
 296         dc = dialog.GetPrintDC();
 297         m_printDialogData = dialog.GetPrintDialogData();
 298         if (dc == NULL)
 299             sm_lastError = wxPRINTER_ERROR;
 300         else
 301             sm_lastError = wxPRINTER_NO_ERROR;
 302     }
 303     else
 304         sm_lastError = wxPRINTER_CANCELLED;
 305
 306     return dc;
 307 }
 308
 309 bool wxWindowsPrinter::Setup(wxWindow *parent)
 310 {
 311     wxPrintDialog dialog(parent, & m_printDialogData);
 312     dialog.GetPrintDialogData().SetSetupDialog(true);
 313
 314     int ret = dialog.ShowModal();
 315
 316     if (ret == wxID_OK)
 317     {
 318         m_printDialogData = dialog.GetPrintDialogData();
 319     }
 320
 321     return (ret == wxID_OK);
 322 }
 323
 324 /*
 325 * Print preview
 326 */
 327
 328 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 329                                              wxPrintout *printoutForPrinting,
 330                                              wxPrintDialogData *data)
 331                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 332 {
 333     DetermineScaling();
 334 }
 335
 336 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 337                                              wxPrintout *printoutForPrinting,
 338                                              wxPrintData *data)
 339                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 340 {
 341     DetermineScaling();
 342 }
 343
 344 wxWindowsPrintPreview::~wxWindowsPrintPreview()
 345 {
 346 }
 347
 348 bool wxWindowsPrintPreview::Print(bool interactive)
 349 {
 350     if (!m_printPrintout)
 351         return false;
 352     wxWindowsPrinter printer(&m_printDialogData);
 353     return printer.Print(m_previewFrame, m_printPrintout, interactive);
 354 }
 355
 356 void wxWindowsPrintPreview::DetermineScaling()
 357 {
 358     HDC dc = ::GetDC(NULL);
 359     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
 360     int screenYRes = ::GetDeviceCaps(dc, VERTRES);
 361     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
 362     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
 363     m_previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 364
 365     ::ReleaseDC(NULL, dc);
 366
 367     // Get a device context for the currently selected printer
 368     wxPrinterDC printerDC(m_printDialogData.GetPrintData());
 369
 370     int printerWidth = 150;
 371     int printerHeight wxDUMMY_INITIALIZE(250);
 372     int printerXRes = 1500;
 373     int printerYRes = 2500;
 374
 375     dc = GetHdcOf(printerDC);
 376     if ( dc )
 377     {
 378         printerWidth = ::GetDeviceCaps(dc, HORZSIZE);
 379         printerHeight = ::GetDeviceCaps(dc, VERTSIZE);
 380         printerXRes = ::GetDeviceCaps(dc, HORZRES);
 381         printerYRes = ::GetDeviceCaps(dc, VERTRES);
 382
 383         int logPPIPrinterX = ::GetDeviceCaps(dc, LOGPIXELSX);
 384         int logPPIPrinterY = ::GetDeviceCaps(dc, LOGPIXELSY);
 385
 386         m_previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 387         m_previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 388
 389         if (logPPIPrinterX == 0 || logPPIPrinterY == 0 || printerWidth == 0 || printerHeight == 0)
 390             m_isOk = false;
 391     }
 392     else
 393         m_isOk = false;
 394
 395     m_pageWidth = printerXRes;
 396     m_pageHeight = printerYRes;
 397
 398     // At 100%, the page should look about page-size on the screen.
 399     m_previewScale = (float)((float)screenWidth/(float)printerWidth);
 400     m_previewScale = m_previewScale * (float)((float)screenYRes/(float)printerYRes);
 401 }
 402
 403 /****************************************************************************
 404
 405   FUNCTION: wxAbortProc()
 406
 407     PURPOSE:  Processes messages for the Abort Dialog box
 408
 409 ****************************************************************************/
 410
 411 LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
 412 {
 413     MSG msg;
 414
 415     if (!wxPrinterBase::sm_abortWindow)              /* If the abort dialog isn't up yet */
 416         return(TRUE);
 417
 418     /* Process messages intended for the abort dialog box */
 419
 420     while (!wxPrinterBase::sm_abortIt && ::PeekMessage(&msg, 0, 0, 0, TRUE))
 421         if (!IsDialogMessage((HWND) wxPrinterBase::sm_abortWindow->GetHWND(), &msg)) {
 422             TranslateMessage(&msg);
 423             DispatchMessage(&msg);
 424         }
 425
 426         /* bAbort is TRUE (return is FALSE) if the user has aborted */
 427
 428         return (!wxPrinterBase::sm_abortIt);
 429 }
 430
 431 #endif
 432     // wxUSE_PRINTING_ARCHITECTURE