src/msw/printwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // Don't use the Windows printer if we're in wxUniv mode and using
  28 // the PostScript architecture
  29 #if wxUSE_PRINTING_ARCHITECTURE && (!defined(__WXUNIVERSAL__) || !wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW)
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/msw/wrapcdlg.h"
  33     #include "wx/window.h"
  34     #include "wx/msw/private.h"
  35     #include "wx/utils.h"
  36     #include "wx/dc.h"
  37     #include "wx/app.h"
  38     #include "wx/msgdlg.h"
  39     #include "wx/intl.h"
  40     #include "wx/log.h"
  41     #include "wx/dcprint.h"
  42 #endif
  43
  44 #include "wx/msw/printwin.h"
  45 #include "wx/printdlg.h"
  46 #include "wx/msw/private.h"
  47
  48 #include <stdlib.h>
  49
  50 #ifndef __WIN32__
  51     #include <print.h>
  52 #endif
  53
  54 // ---------------------------------------------------------------------------
  55 // private functions
  56 // ---------------------------------------------------------------------------
  57
  58 LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
  59
  60 // ---------------------------------------------------------------------------
  61 // wxWin macros
  62 // ---------------------------------------------------------------------------
  63
  64     IMPLEMENT_DYNAMIC_CLASS(wxWindowsPrinter, wxPrinterBase)
  65     IMPLEMENT_CLASS(wxWindowsPrintPreview, wxPrintPreviewBase)
  66
  67 // ===========================================================================
  68 // implementation
  69 // ===========================================================================
  70
  71 // ---------------------------------------------------------------------------
  72 // Printer
  73 // ---------------------------------------------------------------------------
  74
  75 wxWindowsPrinter::wxWindowsPrinter(wxPrintDialogData *data)
  76                 : wxPrinterBase(data)
  77 {
  78     m_lpAbortProc = (WXFARPROC) MakeProcInstance((FARPROC) wxAbortProc, wxGetInstance());
  79 }
  80
  81 wxWindowsPrinter::~wxWindowsPrinter()
  82 {
  83     // avoids warning about statement with no effect (FreeProcInstance
  84     // doesn't do anything under Win32)
  85 #if !defined(__WIN32__) && !defined(__NT__)
  86     FreeProcInstance((FARPROC) m_lpAbortProc);
  87 #endif
  88 }
  89
  90 bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt)
  91 {
  92     sm_abortIt = false;
  93     sm_abortWindow = NULL;
  94
  95     if (!printout)
  96     {
  97         sm_lastError = wxPRINTER_ERROR;
  98         return false;
  99     }
 100
 101     printout->SetIsPreview(false);
 102
 103     if (m_printDialogData.GetMinPage() < 1)
 104         m_printDialogData.SetMinPage(1);
 105     if (m_printDialogData.GetMaxPage() < 1)
 106         m_printDialogData.SetMaxPage(9999);
 107
 108     // Create a suitable device context
 109     wxDC *dc wxDUMMY_INITIALIZE(NULL);
 110     if (prompt)
 111     {
 112         dc = PrintDialog(parent);
 113         if (!dc)
 114             return false;
 115     }
 116     else
 117     {
 118         dc = new wxPrinterDC(m_printDialogData.GetPrintData());
 119     }
 120
 121     // May have pressed cancel.
 122     if (!dc || !dc->Ok())
 123     {
 124         if (dc) delete dc;
 125         return false;
 126     }
 127
 128     HDC hdc = ::GetDC(NULL);
 129     int logPPIScreenX = ::GetDeviceCaps(hdc, LOGPIXELSX);
 130     int logPPIScreenY = ::GetDeviceCaps(hdc, LOGPIXELSY);
 131     ::ReleaseDC(NULL, hdc);
 132
 133     int logPPIPrinterX = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSX);
 134     int logPPIPrinterY = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSY);
 135     if (logPPIPrinterX == 0 || logPPIPrinterY == 0)
 136     {
 137         delete dc;
 138         sm_lastError = wxPRINTER_ERROR;
 139         return false;
 140     }
 141
 142     printout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 143     printout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 144
 145     // Set printout parameters
 146     printout->SetDC(dc);
 147
 148     int w, h;
 149     dc->GetSize(&w, &h);
 150     printout->SetPageSizePixels((int)w, (int)h);
 151
 152     dc->GetSizeMM(&w, &h);
 153     printout->SetPageSizeMM((int)w, (int)h);
 154
 155     // Create an abort window
 156     wxBusyCursor busyCursor;
 157
 158     printout->OnPreparePrinting();
 159
 160     // Get some parameters from the printout, if defined
 161     int fromPage, toPage;
 162     int minPage, maxPage;
 163     printout->GetPageInfo(&minPage, &maxPage, &fromPage, &toPage);
 164
 165     if (maxPage == 0)
 166     {
 167         sm_lastError = wxPRINTER_ERROR;
 168         return false;
 169     }
 170
 171     // Only set min and max, because from and to have been
 172     // set by the user
 173     m_printDialogData.SetMinPage(minPage);
 174     m_printDialogData.SetMaxPage(maxPage);
 175
 176     wxWindow *win = CreateAbortWindow(parent, printout);
 177     wxYield();
 178
 179 #if defined(__WATCOMC__) || defined(__BORLANDC__) || defined(__GNUWIN32__) || defined(__SALFORDC__) || !defined(__WIN32__)
 180 #ifdef STRICT
 181     ::SetAbortProc((HDC) dc->GetHDC(), (ABORTPROC) m_lpAbortProc);
 182 #else
 183     ::SetAbortProc((HDC) dc->GetHDC(), (FARPROC) m_lpAbortProc);
 184 #endif
 185 #else
 186     ::SetAbortProc((HDC) dc->GetHDC(), (int (_stdcall *)
 187         // cast it to right type only if required
 188         // FIXME it's really cdecl and we're casting it to stdcall - either there is
 189         //       something I don't understand or it will crash at first usage
 190 #ifdef STRICT
 191         (HDC, int)
 192 #else
 193         ()
 194 #endif
 195         )m_lpAbortProc);
 196 #endif
 197
 198     if (!win)
 199     {
 200         wxLogDebug(wxT("Could not create an abort dialog."));
 201         sm_lastError = wxPRINTER_ERROR;
 202
 203         delete dc;
 204         return false;
 205     }
 206     sm_abortWindow = win;
 207     sm_abortWindow->Show();
 208     wxSafeYield();
 209
 210     printout->OnBeginPrinting();
 211
 212     sm_lastError = wxPRINTER_NO_ERROR;
 213
 214     int minPageNum = minPage, maxPageNum = maxPage;
 215
 216     if ( !m_printDialogData.GetAllPages() )
 217     {
 218         minPageNum = m_printDialogData.GetFromPage();
 219         maxPageNum = m_printDialogData.GetToPage();
 220     }
 221
 222     int copyCount;
 223     for ( copyCount = 1;
 224           copyCount <= m_printDialogData.GetNoCopies();
 225           copyCount++ )
 226     {
 227         if ( !printout->OnBeginDocument(minPageNum, maxPageNum) )
 228         {
 229             wxLogError(_("Could not start printing."));
 230             sm_lastError = wxPRINTER_ERROR;
 231             break;
 232         }
 233         if (sm_abortIt)
 234         {
 235             sm_lastError = wxPRINTER_CANCELLED;
 236             break;
 237         }
 238
 239         int pn;
 240
 241         for ( pn = minPageNum;
 242               pn <= maxPageNum && printout->HasPage(pn);
 243               pn++ )
 244         {
 245             if ( sm_abortIt )
 246             {
 247                 sm_lastError = wxPRINTER_CANCELLED;
 248                 break;
 249             }
 250
 251             dc->StartPage();
 252             bool cont = printout->OnPrintPage(pn);
 253             dc->EndPage();
 254
 255             if ( !cont )
 256             {
 257                 sm_lastError = wxPRINTER_CANCELLED;
 258                 break;
 259             }
 260         }
 261
 262         printout->OnEndDocument();
 263     }
 264
 265     printout->OnEndPrinting();
 266
 267     if (sm_abortWindow)
 268     {
 269         sm_abortWindow->Show(false);
 270         delete sm_abortWindow;
 271         sm_abortWindow = NULL;
 272     }
 273
 274     delete dc;
 275
 276     return sm_lastError == wxPRINTER_NO_ERROR;
 277 }
 278
 279 wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
 280 {
 281     wxDC* dc = (wxDC*) NULL;
 282
 283     wxPrintDialog dialog(parent, & m_printDialogData);
 284     int ret = dialog.ShowModal();
 285
 286     if (ret == wxID_OK)
 287     {
 288         dc = dialog.GetPrintDC();
 289         m_printDialogData = dialog.GetPrintDialogData();
 290         if (dc == NULL)
 291             sm_lastError = wxPRINTER_ERROR;
 292         else
 293             sm_lastError = wxPRINTER_NO_ERROR;
 294     }
 295     else
 296         sm_lastError = wxPRINTER_CANCELLED;
 297
 298     return dc;
 299 }
 300
 301 bool wxWindowsPrinter::Setup(wxWindow *WXUNUSED(parent))
 302 {
 303 #if 0
 304     // We no longer expose that dialog
 305     wxPrintDialog dialog(parent, & m_printDialogData);
 306     dialog.GetPrintDialogData().SetSetupDialog(true);
 307
 308     int ret = dialog.ShowModal();
 309
 310     if (ret == wxID_OK)
 311     {
 312         m_printDialogData = dialog.GetPrintDialogData();
 313     }
 314
 315     return (ret == wxID_OK);
 316 #else
 317     return false;
 318 #endif
 319 }
 320
 321 /*
 322 * Print preview
 323 */
 324
 325 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 326                                              wxPrintout *printoutForPrinting,
 327                                              wxPrintDialogData *data)
 328                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 329 {
 330     DetermineScaling();
 331 }
 332
 333 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 334                                              wxPrintout *printoutForPrinting,
 335                                              wxPrintData *data)
 336                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 337 {
 338     DetermineScaling();
 339 }
 340
 341 wxWindowsPrintPreview::~wxWindowsPrintPreview()
 342 {
 343 }
 344
 345 bool wxWindowsPrintPreview::Print(bool interactive)
 346 {
 347     if (!m_printPrintout)
 348         return false;
 349     wxWindowsPrinter printer(&m_printDialogData);
 350     return printer.Print(m_previewFrame, m_printPrintout, interactive);
 351 }
 352
 353 void wxWindowsPrintPreview::DetermineScaling()
 354 {
 355     ScreenHDC dc;
 356     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
 357     int screenXRes = ::GetDeviceCaps(dc, HORZRES);
 358     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
 359     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
 360     m_previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 361
 362
 363     // Get a device context for the currently selected printer
 364     wxPrinterDC printerDC(m_printDialogData.GetPrintData());
 365
 366     int printerWidth = 150;
 367     int printerXRes = 1500;
 368     int printerYRes = 2500;
 369
 370     if ( printerDC.Ok() )
 371     {
 372         HDC dc = GetHdcOf(printerDC);
 373
 374         printerWidth = ::GetDeviceCaps(dc, HORZSIZE);
 375         int printerHeight = ::GetDeviceCaps(dc, VERTSIZE);
 376         printerXRes = ::GetDeviceCaps(dc, HORZRES);
 377         printerYRes = ::GetDeviceCaps(dc, VERTRES);
 378
 379         int logPPIPrinterX = ::GetDeviceCaps(dc, LOGPIXELSX);
 380         int logPPIPrinterY = ::GetDeviceCaps(dc, LOGPIXELSY);
 381
 382         m_previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 383         m_previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 384
 385         if ( logPPIPrinterX == 0 ||
 386                 logPPIPrinterY == 0 ||
 387                     printerWidth == 0 ||
 388                         printerHeight == 0 )
 389         {
 390             m_isOk = false;
 391         }
 392     }
 393     else
 394     {
 395         m_isOk = false;
 396     }
 397
 398     m_pageWidth = printerXRes;
 399     m_pageHeight = printerYRes;
 400
 401     // At 100%, the page should look about page-size on the screen.
 402     //
 403     // TODO: the scale could be different in vertical and horizontal directions
 404     float screenDPI = (float)screenXRes / screenWidth;
 405     float printerDPI = (float)printerXRes / printerWidth;
 406
 407     m_previewScale = screenDPI / printerDPI;
 408 }
 409
 410 /****************************************************************************
 411
 412   FUNCTION: wxAbortProc()
 413
 414     PURPOSE:  Processes messages for the Abort Dialog box
 415
 416 ****************************************************************************/
 417
 418 LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
 419 {
 420     MSG msg;
 421
 422     if (!wxPrinterBase::sm_abortWindow)              /* If the abort dialog isn't up yet */
 423         return(TRUE);
 424
 425     /* Process messages intended for the abort dialog box */
 426
 427     while (!wxPrinterBase::sm_abortIt && ::PeekMessage(&msg, 0, 0, 0, TRUE))
 428         if (!IsDialogMessage((HWND) wxPrinterBase::sm_abortWindow->GetHWND(), &msg)) {
 429             TranslateMessage(&msg);
 430             DispatchMessage(&msg);
 431         }
 432
 433     /* bAbort is TRUE (return is FALSE) if the user has aborted */
 434
 435     return !wxPrinterBase::sm_abortIt;
 436 }
 437
 438 #endif
 439     // wxUSE_PRINTING_ARCHITECTURE