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(__WATCOMC__) || 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         return false;
 214     }
 215     sm_abortWindow = win;
 216     sm_abortWindow->Show();
 217     wxSafeYield();
 218
 219     printout->OnBeginPrinting();
 220
 221     sm_lastError = wxPRINTER_NO_ERROR;
 222
 223     int minPageNum = minPage, maxPageNum = maxPage;
 224
 225     if ( !m_printDialogData.GetAllPages() )
 226     {
 227         minPageNum = m_printDialogData.GetFromPage();
 228         maxPageNum = m_printDialogData.GetToPage();
 229     }
 230
 231     int copyCount;
 232     for ( copyCount = 1;
 233           copyCount <= m_printDialogData.GetNoCopies();
 234           copyCount++ )
 235     {
 236         if ( !printout->OnBeginDocument(minPageNum, maxPageNum) )
 237         {
 238             wxLogError(_("Could not start printing."));
 239             sm_lastError = wxPRINTER_ERROR;
 240             break;
 241         }
 242         if (sm_abortIt)
 243         {
 244             sm_lastError = wxPRINTER_CANCELLED;
 245             break;
 246         }
 247
 248         int pn;
 249
 250         for ( pn = minPageNum;
 251               pn <= maxPageNum && printout->HasPage(pn);
 252               pn++ )
 253         {
 254             if ( sm_abortIt )
 255             {
 256                 sm_lastError = wxPRINTER_CANCELLED;
 257                 break;
 258             }
 259
 260             dc->StartPage();
 261             bool cont = printout->OnPrintPage(pn);
 262             dc->EndPage();
 263
 264             if ( !cont )
 265             {
 266                 sm_lastError = wxPRINTER_CANCELLED;
 267                 break;
 268             }
 269         }
 270
 271         printout->OnEndDocument();
 272     }
 273
 274     printout->OnEndPrinting();
 275
 276     if (sm_abortWindow)
 277     {
 278         sm_abortWindow->Show(false);
 279         delete sm_abortWindow;
 280         sm_abortWindow = NULL;
 281     }
 282
 283     delete dc;
 284
 285     return sm_lastError == wxPRINTER_NO_ERROR;
 286 }
 287
 288 wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
 289 {
 290     wxDC* dc = (wxDC*) NULL;
 291
 292     wxPrintDialog dialog(parent, & m_printDialogData);
 293     int ret = dialog.ShowModal();
 294
 295     if (ret == wxID_OK)
 296     {
 297         dc = dialog.GetPrintDC();
 298         m_printDialogData = dialog.GetPrintDialogData();
 299         if (dc == NULL)
 300             sm_lastError = wxPRINTER_ERROR;
 301         else
 302             sm_lastError = wxPRINTER_NO_ERROR;
 303     }
 304     else
 305         sm_lastError = wxPRINTER_CANCELLED;
 306
 307     return dc;
 308 }
 309
 310 bool wxWindowsPrinter::Setup(wxWindow *WXUNUSED(parent))
 311 {
 312 #if 0
 313     // We no longer expose that dialog
 314     wxPrintDialog dialog(parent, & m_printDialogData);
 315     dialog.GetPrintDialogData().SetSetupDialog(true);
 316
 317     int ret = dialog.ShowModal();
 318
 319     if (ret == wxID_OK)
 320     {
 321         m_printDialogData = dialog.GetPrintDialogData();
 322     }
 323
 324     return (ret == wxID_OK);
 325 #else
 326     return false;
 327 #endif
 328 }
 329
 330 /*
 331 * Print preview
 332 */
 333
 334 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 335                                              wxPrintout *printoutForPrinting,
 336                                              wxPrintDialogData *data)
 337                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 338 {
 339     DetermineScaling();
 340 }
 341
 342 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 343                                              wxPrintout *printoutForPrinting,
 344                                              wxPrintData *data)
 345                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 346 {
 347     DetermineScaling();
 348 }
 349
 350 wxWindowsPrintPreview::~wxWindowsPrintPreview()
 351 {
 352 }
 353
 354 bool wxWindowsPrintPreview::Print(bool interactive)
 355 {
 356     if (!m_printPrintout)
 357         return false;
 358     wxWindowsPrinter printer(&m_printDialogData);
 359     return printer.Print(m_previewFrame, m_printPrintout, interactive);
 360 }
 361
 362 void wxWindowsPrintPreview::DetermineScaling()
 363 {
 364     HDC dc = ::GetDC(NULL);
 365     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
 366     int screenYRes = ::GetDeviceCaps(dc, VERTRES);
 367     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
 368     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
 369     m_previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 370
 371     ::ReleaseDC(NULL, dc);
 372
 373     // Get a device context for the currently selected printer
 374     wxPrinterDC printerDC(m_printDialogData.GetPrintData());
 375
 376     int printerWidth = 150;
 377     int printerHeight wxDUMMY_INITIALIZE(250);
 378     int printerXRes = 1500;
 379     int printerYRes = 2500;
 380
 381     dc = GetHdcOf(printerDC);
 382     if ( dc )
 383     {
 384         printerWidth = ::GetDeviceCaps(dc, HORZSIZE);
 385         printerHeight = ::GetDeviceCaps(dc, VERTSIZE);
 386         printerXRes = ::GetDeviceCaps(dc, HORZRES);
 387         printerYRes = ::GetDeviceCaps(dc, VERTRES);
 388
 389         int logPPIPrinterX = ::GetDeviceCaps(dc, LOGPIXELSX);
 390         int logPPIPrinterY = ::GetDeviceCaps(dc, LOGPIXELSY);
 391
 392         m_previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 393         m_previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 394
 395         if (logPPIPrinterX == 0 || logPPIPrinterY == 0 || printerWidth == 0 || printerHeight == 0)
 396             m_isOk = false;
 397     }
 398     else
 399         m_isOk = false;
 400
 401     m_pageWidth = printerXRes;
 402     m_pageHeight = printerYRes;
 403
 404     // At 100%, the page should look about page-size on the screen.
 405     m_previewScale = (float)((float)screenWidth/(float)printerWidth);
 406     m_previewScale = m_previewScale * (float)((float)screenYRes/(float)printerYRes);
 407 }
 408
 409 /****************************************************************************
 410
 411   FUNCTION: wxAbortProc()
 412
 413     PURPOSE:  Processes messages for the Abort Dialog box
 414
 415 ****************************************************************************/
 416
 417 LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
 418 {
 419     MSG msg;
 420
 421     if (!wxPrinterBase::sm_abortWindow)              /* If the abort dialog isn't up yet */
 422         return(TRUE);
 423
 424     /* Process messages intended for the abort dialog box */
 425
 426     while (!wxPrinterBase::sm_abortIt && ::PeekMessage(&msg, 0, 0, 0, TRUE))
 427         if (!IsDialogMessage((HWND) wxPrinterBase::sm_abortWindow->GetHWND(), &msg)) {
 428             TranslateMessage(&msg);
 429             DispatchMessage(&msg);
 430         }
 431
 432     /* bAbort is TRUE (return is FALSE) if the user has aborted */
 433
 434     return !wxPrinterBase::sm_abortIt;
 435 }
 436
 437 #endif
 438     // wxUSE_PRINTING_ARCHITECTURE