src/msw/dcprint.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/dcprint.cpp
   3 // Purpose:     wxPrinterDC class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   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 "dcprint.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 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/window.h"
  35     #include "wx/dcmemory.h"
  36 #endif
  37
  38 #if wxUSE_PRINTING_ARCHITECTURE
  39
  40 #include "wx/msw/private.h"
  41
  42 #if wxUSE_WXDIB
  43 #include "wx/msw/dib.h"
  44 #endif
  45
  46 #include "wx/dcprint.h"
  47 #include "math.h"
  48
  49 #if wxUSE_COMMON_DIALOGS
  50     #include <commdlg.h>
  51 #endif
  52
  53 #ifndef __WIN32__
  54     #include <print.h>
  55 #endif
  56
  57 // mingw32 defines GDI_ERROR incorrectly
  58 #if defined(__GNUWIN32__) || !defined(GDI_ERROR)
  59     #undef GDI_ERROR
  60     #define GDI_ERROR ((int)-1)
  61 #endif
  62
  63 // ----------------------------------------------------------------------------
  64 // wxWin macros
  65 // ----------------------------------------------------------------------------
  66
  67 IMPLEMENT_CLASS(wxPrinterDC, wxDC)
  68
  69 // ============================================================================
  70 // implementation
  71 // ============================================================================
  72
  73 // ----------------------------------------------------------------------------
  74 // wxPrinterDC construction
  75 // ----------------------------------------------------------------------------
  76
  77 // This form is deprecated
  78 wxPrinterDC::wxPrinterDC(const wxString& driver_name,
  79                          const wxString& device_name,
  80                          const wxString& file,
  81                          bool interactive,
  82                          int orientation)
  83 {
  84     m_isInteractive = interactive;
  85
  86     if ( !file.empty() )
  87         m_printData.SetFilename(file);
  88
  89 #if wxUSE_COMMON_DIALOGS
  90     if ( interactive )
  91     {
  92         PRINTDLG pd;
  93
  94         pd.lStructSize = sizeof( PRINTDLG );
  95         pd.hwndOwner = (HWND) NULL;
  96         pd.hDevMode = (HANDLE)NULL;
  97         pd.hDevNames = (HANDLE)NULL;
  98         pd.Flags = PD_RETURNDC | PD_NOSELECTION | PD_NOPAGENUMS;
  99         pd.nFromPage = 0;
 100         pd.nToPage = 0;
 101         pd.nMinPage = 0;
 102         pd.nMaxPage = 0;
 103         pd.nCopies = 1;
 104         pd.hInstance = (HINSTANCE)NULL;
 105
 106         m_ok = PrintDlg( &pd ) != 0;
 107         if ( m_ok )
 108         {
 109             m_hDC = (WXHDC) pd.hDC;
 110         }
 111     }
 112     else
 113 #endif // wxUSE_COMMON_DIALOGS
 114     {
 115         if ( !driver_name.empty() && !device_name.empty() && !file.empty() )
 116         {
 117             m_hDC = (WXHDC) CreateDC(driver_name, device_name, file, NULL);
 118         }
 119         else // we don't have all parameters, ask the user
 120         {
 121             wxPrintData printData;
 122             printData.SetOrientation(orientation);
 123             m_hDC = wxGetPrinterDC(printData);
 124         }
 125
 126         m_ok = m_hDC ? TRUE: FALSE;
 127
 128         // as we created it, we must delete it as well
 129         m_bOwnsDC = TRUE;
 130     }
 131
 132     Init();
 133 }
 134
 135 wxPrinterDC::wxPrinterDC(const wxPrintData& printData)
 136 {
 137     m_printData = printData;
 138
 139     m_isInteractive = FALSE;
 140
 141     m_hDC = wxGetPrinterDC(printData);
 142     m_ok = m_hDC != 0;
 143     m_bOwnsDC = TRUE;
 144
 145     Init();
 146 }
 147
 148
 149 wxPrinterDC::wxPrinterDC(WXHDC dc)
 150 {
 151     m_isInteractive = FALSE;
 152
 153     m_hDC = dc;
 154     m_bOwnsDC = TRUE;
 155     m_ok = TRUE;
 156 }
 157
 158 void wxPrinterDC::Init()
 159 {
 160     if ( m_hDC )
 161     {
 162         //     int width = GetDeviceCaps(m_hDC, VERTRES);
 163         //     int height = GetDeviceCaps(m_hDC, HORZRES);
 164         SetMapMode(wxMM_TEXT);
 165
 166         SetBrush(*wxBLACK_BRUSH);
 167         SetPen(*wxBLACK_PEN);
 168     }
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // wxPrinterDC {Start/End}{Page/Doc} methods
 173 // ----------------------------------------------------------------------------
 174
 175 bool wxPrinterDC::StartDoc(const wxString& message)
 176 {
 177     DOCINFO docinfo;
 178     docinfo.cbSize = sizeof(DOCINFO);
 179     docinfo.lpszDocName = (const wxChar*)message;
 180
 181     wxString filename(m_printData.GetFilename());
 182
 183     if (filename.IsEmpty())
 184         docinfo.lpszOutput = NULL;
 185     else
 186         docinfo.lpszOutput = (const wxChar *) filename;
 187
 188 #if defined(__WIN95__)
 189     docinfo.lpszDatatype = NULL;
 190     docinfo.fwType = 0;
 191 #endif
 192
 193     if (!m_hDC)
 194         return FALSE;
 195
 196     int ret = ::StartDoc(GetHdc(), &docinfo);
 197
 198     if (ret <= 0)
 199     {
 200         DWORD lastError = GetLastError();
 201         wxLogDebug(wxT("wxDC::StartDoc failed with error: %ld\n"), lastError);
 202     }
 203
 204     return (ret > 0);
 205 }
 206
 207 void wxPrinterDC::EndDoc()
 208 {
 209     if (m_hDC) ::EndDoc((HDC) m_hDC);
 210 }
 211
 212 void wxPrinterDC::StartPage()
 213 {
 214     if (m_hDC)
 215         ::StartPage((HDC) m_hDC);
 216 }
 217
 218 void wxPrinterDC::EndPage()
 219 {
 220     if (m_hDC)
 221         ::EndPage((HDC) m_hDC);
 222 }
 223
 224 // Returns default device and port names
 225 static bool wxGetDefaultDeviceName(wxString& deviceName, wxString& portName)
 226 {
 227     deviceName.clear();
 228
 229     LPDEVNAMES  lpDevNames;
 230     LPTSTR      lpszDeviceName;
 231     LPTSTR      lpszPortName;
 232
 233     PRINTDLG    pd;
 234
 235     // Cygwin has trouble believing PRINTDLG is 66 bytes - thinks it is 68
 236 #ifdef __GNUWIN32__
 237     memset(&pd, 0, 66);
 238     pd.lStructSize    = 66; // sizeof(PRINTDLG);
 239 #else
 240     memset(&pd, 0, sizeof(PRINTDLG));
 241     pd.lStructSize    = sizeof(PRINTDLG);
 242 #endif
 243
 244     pd.hwndOwner      = (HWND)NULL;
 245     pd.hDevMode       = NULL; // Will be created by PrintDlg
 246     pd.hDevNames      = NULL; // Ditto
 247     pd.Flags          = PD_RETURNDEFAULT;
 248     pd.nCopies        = 1;
 249
 250     if (!PrintDlg((LPPRINTDLG)&pd))
 251     {
 252         if ( pd.hDevMode )
 253             GlobalFree(pd.hDevMode);
 254         if (pd.hDevNames)
 255             GlobalFree(pd.hDevNames);
 256
 257         return FALSE;
 258     }
 259
 260     if (pd.hDevNames)
 261     {
 262         lpDevNames = (LPDEVNAMES)GlobalLock(pd.hDevNames);
 263         lpszDeviceName = (LPTSTR)lpDevNames + lpDevNames->wDeviceOffset;
 264         lpszPortName   = (LPTSTR)lpDevNames + lpDevNames->wOutputOffset;
 265
 266         deviceName = lpszDeviceName;
 267         portName = lpszPortName;
 268
 269         GlobalUnlock(pd.hDevNames);
 270         GlobalFree(pd.hDevNames);
 271         pd.hDevNames=NULL;
 272     }
 273
 274     if (pd.hDevMode)
 275     {
 276         GlobalFree(pd.hDevMode);
 277         pd.hDevMode=NULL;
 278     }
 279     return ( deviceName != wxEmptyString );
 280 }
 281
 282 // Gets an HDC for the specified printer configuration
 283 WXHDC WXDLLEXPORT wxGetPrinterDC(const wxPrintData& printDataConst)
 284 {
 285     wxPrintData printData = printDataConst;
 286     printData.ConvertToNative();
 287
 288     wxChar* driverName = (wxChar*) NULL;
 289
 290     wxString devNameStr = printData.GetPrinterName();
 291     wxChar* portName = (wxChar*) NULL; // Obsolete in WIN32
 292
 293     const wxChar* deviceName;
 294     if ( !devNameStr )
 295         deviceName = (wxChar*) NULL;
 296     else
 297         deviceName = devNameStr.c_str();
 298
 299     LPDEVMODE lpDevMode = (LPDEVMODE) NULL;
 300
 301     HGLOBAL hDevMode = (HGLOBAL)(DWORD) printData.GetNativeData();
 302
 303     if ( hDevMode )
 304         lpDevMode = (DEVMODE*) GlobalLock(hDevMode);
 305
 306     if ( !devNameStr )
 307     {
 308         // Retrieve the default device name
 309         wxString portName;
 310         if ( !wxGetDefaultDeviceName(devNameStr, portName) )
 311         {
 312             return 0; // Could not get default device name
 313         }
 314         deviceName = devNameStr.c_str();
 315     }
 316
 317 #ifdef __WIN32__
 318     HDC hDC = CreateDC(driverName, deviceName, portName, (DEVMODE *) lpDevMode);
 319 #else
 320     HDC hDC = CreateDC(driverName, deviceName, portName, (LPSTR) lpDevMode);
 321 #endif
 322
 323     if (hDevMode && lpDevMode)
 324         GlobalUnlock(hDevMode);
 325
 326     return (WXHDC) hDC;
 327 }
 328
 329 // ----------------------------------------------------------------------------
 330 // wxPrinterDC bit blitting/bitmap drawing
 331 // ----------------------------------------------------------------------------
 332
 333 // helper of DoDrawBitmap() and DoBlit()
 334 static
 335 bool DrawBitmapUsingStretchDIBits(HDC hdc,
 336                                   const wxBitmap& bmp,
 337                                   wxCoord x, wxCoord y)
 338 {
 339 #if wxUSE_WXDIB
 340     wxDIB dib(bmp);
 341     bool ok = dib.IsOk();
 342     if ( !ok )
 343         return FALSE;
 344
 345     DIBSECTION ds;
 346     if ( !::GetObject(dib.GetHandle(), sizeof(ds), &ds) )
 347     {
 348         wxLogLastError(_T("GetObject(DIBSECTION)"));
 349
 350         return FALSE;
 351     }
 352
 353     // ok, we've got all data we need, do blit it
 354     if ( ::StretchDIBits
 355             (
 356                 hdc,
 357                 x, y,
 358                 ds.dsBmih.biWidth, ds.dsBmih.biHeight,
 359                 0, 0,
 360                 ds.dsBmih.biWidth, ds.dsBmih.biHeight,
 361                 ds.dsBm.bmBits,
 362                 (LPBITMAPINFO)&ds.dsBmih,
 363                 DIB_RGB_COLORS,
 364                 SRCCOPY
 365             ) == GDI_ERROR )
 366     {
 367         wxLogLastError(wxT("StretchDIBits"));
 368
 369         return FALSE;
 370     }
 371
 372     return TRUE;
 373 #else
 374     return FALSE;
 375 #endif
 376 }
 377
 378 void wxPrinterDC::DoDrawBitmap(const wxBitmap& bmp,
 379                                wxCoord x, wxCoord y,
 380                                bool useMask)
 381 {
 382     wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxPrinterDC::DrawBitmap") );
 383
 384     int width = bmp.GetWidth(),
 385         height = bmp.GetHeight();
 386
 387     if ( !(::GetDeviceCaps(GetHdc(), RASTERCAPS) & RC_STRETCHDIB) ||
 388             !DrawBitmapUsingStretchDIBits(GetHdc(), bmp, x, y) )
 389     {
 390         // no support for StretchDIBits() or an error occured if we got here
 391         wxMemoryDC memDC;
 392         memDC.SelectObject(bmp);
 393
 394         Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
 395
 396         memDC.SelectObject(wxNullBitmap);
 397     }
 398 }
 399
 400 bool wxPrinterDC::DoBlit(wxCoord xdest, wxCoord ydest,
 401                          wxCoord width, wxCoord height,
 402                          wxDC *source,
 403                          wxCoord WXUNUSED(xsrc), wxCoord WXUNUSED(ysrc),
 404                          int WXUNUSED(rop), bool useMask,
 405                          wxCoord WXUNUSED(xsrcMask), wxCoord WXUNUSED(ysrcMask))
 406 {
 407     wxBitmap& bmp = source->GetSelectedBitmap();
 408     wxMask *mask = useMask ? bmp.GetMask() : NULL;
 409     if ( mask )
 410     {
 411         // If we are printing source colours are screen colours not printer
 412         // colours and so we need copy the bitmap pixel by pixel.
 413         RECT rect;
 414         HDC dcSrc = GetHdcOf(*source);
 415         MemoryHDC dcMask(dcSrc);
 416         SelectInHDC selectMask(dcMask, (HBITMAP)mask->GetMaskBitmap());
 417
 418         for (int x = 0; x < width; x++)
 419         {
 420             for (int y = 0; y < height; y++)
 421             {
 422                 COLORREF cref = ::GetPixel(dcMask, x, y);
 423                 if (cref)
 424                 {
 425                     HBRUSH brush = ::CreateSolidBrush(::GetPixel(dcSrc, x, y));
 426                     rect.left = xdest + x;
 427                     rect.right = rect.left + 1;
 428                     rect.top = ydest + y;
 429                     rect.bottom = rect.top + 1;
 430                     ::FillRect(GetHdc(), &rect, brush);
 431                     ::DeleteObject(brush);
 432                 }
 433             }
 434         }
 435     }
 436     else // no mask
 437     {
 438         if ( !(::GetDeviceCaps(GetHdc(), RASTERCAPS) & RC_STRETCHDIB) ||
 439                 !DrawBitmapUsingStretchDIBits(GetHdc(), bmp, xdest, ydest) )
 440         {
 441             // no support for StretchDIBits
 442
 443             // as we are printing, source colours are screen colours not
 444             // printer colours and so we need copy the bitmap pixel by pixel.
 445             HDC dcSrc = GetHdcOf(*source);
 446             RECT rect;
 447             for (int y = 0; y < height; y++)
 448             {
 449                 // optimization: draw identical adjacent pixels together.
 450                 for (int x = 0; x < width; x++)
 451                 {
 452                     COLORREF col = ::GetPixel(dcSrc, x, y);
 453                     HBRUSH brush = ::CreateSolidBrush( col );
 454
 455                     rect.left = xdest + x;
 456                     rect.top = ydest + y;
 457                     while( (x + 1 < width) &&
 458                                 (::GetPixel(dcSrc, x + 1, y) == col ) )
 459                     {
 460                         ++x;
 461                     }
 462                     rect.right = xdest + x + 1;
 463                     rect.bottom = rect.top + 1;
 464                     ::FillRect((HDC) m_hDC, &rect, brush);
 465                     ::DeleteObject(brush);
 466                 }
 467             }
 468         }
 469     }
 470
 471     return TRUE;
 472 }
 473
 474 #endif
 475     // wxUSE_PRINTING_ARCHITECTURE