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 #ifdef __GNUG__
  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 #if wxUSE_PRINTING_ARCHITECTURE
  34
  35 #ifndef WX_PRECOMP
  36     #include "wx/window.h"
  37     #include "wx/msw/private.h"
  38     #include "wx/utils.h"
  39     #include "wx/dc.h"
  40     #include "wx/app.h"
  41     #include "wx/msgdlg.h"
  42     #include "wx/intl.h"
  43 #endif
  44
  45 #include "wx/msw/printwin.h"
  46 #include "wx/dcprint.h"
  47 #include "wx/printdlg.h"
  48 #include "wx/log.h"
  49 #include "wx/msw/private.h"
  50
  51 #include <stdlib.h>
  52
  53 #include "wx/msw/private.h"
  54
  55 #include <commdlg.h>
  56
  57 #ifndef __WIN32__
  58     #include <print.h>
  59 #endif
  60
  61 // ---------------------------------------------------------------------------
  62 // private functions
  63 // ---------------------------------------------------------------------------
  64
  65 LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
  66
  67 // ---------------------------------------------------------------------------
  68 // wxWin macros
  69 // ---------------------------------------------------------------------------
  70
  71     IMPLEMENT_DYNAMIC_CLASS(wxWindowsPrinter, wxPrinterBase)
  72     IMPLEMENT_CLASS(wxWindowsPrintPreview, wxPrintPreviewBase)
  73
  74 // ===========================================================================
  75 // implementation
  76 // ===========================================================================
  77
  78 // ---------------------------------------------------------------------------
  79 // Printer
  80 // ---------------------------------------------------------------------------
  81
  82 wxWindowsPrinter::wxWindowsPrinter(wxPrintDialogData *data)
  83                 : wxPrinterBase(data)
  84 {
  85     m_lpAbortProc = (WXFARPROC) MakeProcInstance((FARPROC) wxAbortProc, wxGetInstance());
  86 }
  87
  88 wxWindowsPrinter::~wxWindowsPrinter()
  89 {
  90     // avoids warning about statement with no effect (FreeProcInstance
  91         // doesn't do anything under Win32)
  92 #if !defined(__WIN32__) && !defined(__NT__)
  93     FreeProcInstance((FARPROC) m_lpAbortProc);
  94 #endif
  95 }
  96
  97 bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt)
  98 {
  99     sm_abortIt = FALSE;
 100     sm_abortWindow = NULL;
 101
 102     if (!printout)
 103     {
 104         sm_lastError = wxPRINTER_ERROR;
 105         return FALSE;
 106     }
 107
 108     printout->SetIsPreview(FALSE);
 109
 110     // 4/9/99, JACS: this is a silly place to allow preparation, considering
 111     // the DC and no parameters have been set in the printout object.
 112     // Moved further down.
 113     // printout->OnPreparePrinting();
 114
 115     // Get some parameters from the printout, if defined
 116     int fromPage, toPage;
 117     int minPage, maxPage;
 118     printout->GetPageInfo(&minPage, &maxPage, &fromPage, &toPage);
 119
 120     if (maxPage == 0)
 121     {
 122         sm_lastError = wxPRINTER_ERROR;
 123         return FALSE;
 124     }
 125
 126     m_printDialogData.SetMinPage(minPage);
 127     m_printDialogData.SetMaxPage(maxPage);
 128     if (fromPage != 0)
 129         m_printDialogData.SetFromPage(fromPage);
 130     if (toPage != 0)
 131         m_printDialogData.SetToPage(toPage);
 132
 133     if (minPage != 0)
 134     {
 135         m_printDialogData.EnablePageNumbers(TRUE);
 136         if (m_printDialogData.GetFromPage() < m_printDialogData.GetMinPage())
 137             m_printDialogData.SetFromPage(m_printDialogData.GetMinPage());
 138         else if (m_printDialogData.GetFromPage() > m_printDialogData.GetMaxPage())
 139             m_printDialogData.SetFromPage(m_printDialogData.GetMaxPage());
 140         if (m_printDialogData.GetToPage() > m_printDialogData.GetMaxPage())
 141             m_printDialogData.SetToPage(m_printDialogData.GetMaxPage());
 142         else if (m_printDialogData.GetToPage() < m_printDialogData.GetMinPage())
 143             m_printDialogData.SetToPage(m_printDialogData.GetMinPage());
 144     }
 145     else
 146         m_printDialogData.EnablePageNumbers(FALSE);
 147
 148     // Create a suitable device context
 149     wxDC *dc = NULL;
 150     if (prompt)
 151     {
 152         dc = PrintDialog(parent);
 153         if (!dc)
 154             return FALSE;
 155     }
 156     else
 157     {
 158         //      dc = new wxPrinterDC("", "", "", FALSE, m_printData.GetOrientation());
 159         dc = new wxPrinterDC(m_printDialogData.GetPrintData());
 160     }
 161
 162     // May have pressed cancel.
 163     if (!dc || !dc->Ok())
 164     {
 165         if (dc) delete dc;
 166         return FALSE;
 167     }
 168
 169     int logPPIScreenX = 0;
 170     int logPPIScreenY = 0;
 171     int logPPIPrinterX = 0;
 172     int logPPIPrinterY = 0;
 173
 174     HDC hdc = ::GetDC(NULL);
 175     logPPIScreenX = ::GetDeviceCaps(hdc, LOGPIXELSX);
 176     logPPIScreenY = ::GetDeviceCaps(hdc, LOGPIXELSY);
 177     ::ReleaseDC(NULL, hdc);
 178
 179     logPPIPrinterX = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSX);
 180     logPPIPrinterY = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSY);
 181     if (logPPIPrinterX == 0 || logPPIPrinterY == 0)
 182     {
 183         delete dc;
 184         sm_lastError = wxPRINTER_ERROR;
 185         return FALSE;
 186     }
 187
 188     printout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 189     printout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 190
 191     // Set printout parameters
 192     printout->SetDC(dc);
 193
 194     int w, h;
 195     dc->GetSize(&w, &h);
 196     printout->SetPageSizePixels((int)w, (int)h);
 197
 198     dc->GetSizeMM(&w, &h);
 199     printout->SetPageSizeMM((int)w, (int)h);
 200
 201     // Create an abort window
 202     wxBeginBusyCursor();
 203
 204     printout->OnPreparePrinting();
 205
 206     wxWindow *win = CreateAbortWindow(parent, printout);
 207     wxYield();
 208
 209 #if defined(__BORLANDC__) || defined(__GNUWIN32__) || defined(__SALFORDC__) || !defined(__WIN32__)
 210 #ifdef STRICT
 211     ::SetAbortProc((HDC) dc->GetHDC(), (ABORTPROC) m_lpAbortProc);
 212 #else
 213     ::SetAbortProc((HDC) dc->GetHDC(), (FARPROC) m_lpAbortProc);
 214 #endif
 215 #else
 216     ::SetAbortProc((HDC) dc->GetHDC(), (int (_stdcall *)
 217         // cast it to right type only if required
 218         // FIXME it's really cdecl and we're casting it to stdcall - either there is
 219         //       something I don't understand or it will crash at first usage
 220 #ifdef STRICT
 221         (HDC, int)
 222 #else
 223         ()
 224 #endif
 225         )m_lpAbortProc);
 226 #endif
 227
 228     if (!win)
 229     {
 230         wxEndBusyCursor();
 231         wxLogDebug(wxT("Could not create an abort dialog."));
 232         sm_lastError = wxPRINTER_ERROR;
 233
 234         delete dc;
 235     }
 236     sm_abortWindow = win;
 237     sm_abortWindow->Show(TRUE);
 238     wxSafeYield();
 239
 240     printout->OnBeginPrinting();
 241
 242     sm_lastError = wxPRINTER_NO_ERROR;
 243
 244     int copyCount;
 245     for ( copyCount = 1;
 246           copyCount <= m_printDialogData.GetNoCopies();
 247           copyCount++ )
 248     {
 249         if (!printout->OnBeginDocument(m_printDialogData.GetFromPage(), m_printDialogData.GetToPage()))
 250         {
 251             wxEndBusyCursor();
 252             wxLogError(_("Could not start printing."));
 253             sm_lastError = wxPRINTER_ERROR;
 254             break;
 255         }
 256         if (sm_abortIt)
 257         {
 258             sm_lastError = wxPRINTER_CANCELLED;
 259             break;
 260         }
 261
 262         int pn;
 263         for ( pn = m_printDialogData.GetFromPage();
 264               pn <= m_printDialogData.GetToPage() && printout->HasPage(pn);
 265               pn++ )
 266         {
 267             if ( sm_abortIt )
 268             {
 269                 sm_lastError = wxPRINTER_CANCELLED;
 270                 break;
 271             }
 272
 273             dc->StartPage();
 274             bool cont = printout->OnPrintPage(pn);
 275             dc->EndPage();
 276
 277             if ( !cont )
 278             {
 279                 sm_lastError = wxPRINTER_CANCELLED;
 280                 break;
 281             }
 282         }
 283
 284         printout->OnEndDocument();
 285     }
 286
 287     printout->OnEndPrinting();
 288
 289     if (sm_abortWindow)
 290     {
 291         sm_abortWindow->Show(FALSE);
 292         delete sm_abortWindow;
 293         sm_abortWindow = NULL;
 294     }
 295
 296     wxEndBusyCursor();
 297
 298     delete dc;
 299
 300     return (sm_lastError == wxPRINTER_NO_ERROR);
 301 }
 302
 303 wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
 304 {
 305     wxDC* dc = (wxDC*) NULL;
 306
 307     wxPrintDialog dialog(parent, & m_printDialogData);
 308     int ret = dialog.ShowModal();
 309
 310     if (ret == wxID_OK)
 311     {
 312         dc = dialog.GetPrintDC();
 313         m_printDialogData = dialog.GetPrintDialogData();
 314         if (dc == NULL)
 315             sm_lastError = wxPRINTER_ERROR;
 316         else
 317             sm_lastError = wxPRINTER_NO_ERROR;
 318     }
 319     else
 320         sm_lastError = wxPRINTER_CANCELLED;
 321
 322     return dc;
 323 }
 324
 325 bool wxWindowsPrinter::Setup(wxWindow *parent)
 326 {
 327     wxPrintDialog dialog(parent, & m_printDialogData);
 328     dialog.GetPrintDialogData().SetSetupDialog(TRUE);
 329
 330     int ret = dialog.ShowModal();
 331
 332     if (ret == wxID_OK)
 333     {
 334         m_printDialogData = dialog.GetPrintDialogData();
 335     }
 336
 337     return (ret == wxID_OK);
 338 }
 339
 340 /*
 341 * Print preview
 342 */
 343
 344 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 345                                              wxPrintout *printoutForPrinting,
 346                                              wxPrintDialogData *data)
 347                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 348 {
 349     DetermineScaling();
 350 }
 351
 352 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 353                                              wxPrintout *printoutForPrinting,
 354                                              wxPrintData *data)
 355                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 356 {
 357     DetermineScaling();
 358 }
 359
 360 wxWindowsPrintPreview::~wxWindowsPrintPreview()
 361 {
 362 }
 363
 364 bool wxWindowsPrintPreview::Print(bool interactive)
 365 {
 366     if (!m_printPrintout)
 367         return FALSE;
 368     wxWindowsPrinter printer(&m_printDialogData);
 369     return printer.Print(m_previewFrame, m_printPrintout, interactive);
 370 }
 371
 372 void wxWindowsPrintPreview::DetermineScaling()
 373 {
 374     HDC dc = ::GetDC(NULL);
 375     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
 376     int screenYRes = ::GetDeviceCaps(dc, VERTRES);
 377     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
 378     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
 379     m_previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 380
 381     ::ReleaseDC(NULL, dc);
 382
 383     // Get a device context for the currently selected printer
 384     wxPrinterDC printerDC(m_printDialogData.GetPrintData());
 385
 386     int printerWidth = 150;
 387     int printerHeight = 250;
 388     int printerXRes = 1500;
 389     int printerYRes = 2500;
 390
 391     dc = GetHdcOf(printerDC);
 392     if ( dc )
 393     {
 394         printerWidth = ::GetDeviceCaps(dc, HORZSIZE);
 395         printerHeight = ::GetDeviceCaps(dc, VERTSIZE);
 396         printerXRes = ::GetDeviceCaps(dc, HORZRES);
 397         printerYRes = ::GetDeviceCaps(dc, VERTRES);
 398
 399         int logPPIPrinterX = ::GetDeviceCaps(dc, LOGPIXELSX);
 400         int logPPIPrinterY = ::GetDeviceCaps(dc, LOGPIXELSY);
 401
 402         m_previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 403         m_previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 404
 405         if (logPPIPrinterX == 0 || logPPIPrinterY == 0 || printerWidth == 0 || printerHeight == 0)
 406             m_isOk = FALSE;
 407     }
 408     else
 409         m_isOk = FALSE;
 410
 411     m_pageWidth = printerXRes;
 412     m_pageHeight = printerYRes;
 413
 414     // At 100%, the page should look about page-size on the screen.
 415     m_previewScale = (float)((float)screenWidth/(float)printerWidth);
 416     m_previewScale = m_previewScale * (float)((float)screenYRes/(float)printerYRes);
 417 }
 418
 419 /****************************************************************************
 420
 421   FUNCTION: wxAbortProc()
 422
 423     PURPOSE:  Processes messages for the Abort Dialog box
 424
 425 ****************************************************************************/
 426
 427 LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
 428 {
 429     MSG msg;
 430
 431     if (!wxPrinterBase::sm_abortWindow)              /* If the abort dialog isn't up yet */
 432         return(TRUE);
 433
 434     /* Process messages intended for the abort dialog box */
 435
 436     while (!wxPrinterBase::sm_abortIt && PeekMessage(&msg, 0, 0, 0, TRUE))
 437         if (!IsDialogMessage((HWND) wxPrinterBase::sm_abortWindow->GetHWND(), &msg)) {
 438             TranslateMessage(&msg);
 439             DispatchMessage(&msg);
 440         }
 441
 442         /* bAbort is TRUE (return is FALSE) if the user has aborted */
 443
 444         return (!wxPrinterBase::sm_abortIt);
 445 }
 446
 447 #endif
 448     // wxUSE_PRINTING_ARCHITECTURE