src/os2/clipbrd.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        clipbrd.cpp
   3 // Purpose:     Clipboard functionality
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/13/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/setup.h"
  17 #endif
  18
  19 #if wxUSE_CLIPBOARD
  20
  21 #ifndef WX_PRECOMP
  22     #include "wx/object.h"
  23     #include "wx/event.h"
  24     #include "wx/app.h"
  25     #include "wx/frame.h"
  26     #include "wx/bitmap.h"
  27     #include "wx/utils.h"
  28     #include "wx/intl.h"
  29 #endif
  30
  31 #if wxUSE_METAFILE
  32     #include "wx/metafile.h"
  33 #endif
  34
  35 #include "wx/log.h"
  36 #include "wx/clipbrd.h"
  37
  38 #include <string.h>
  39
  40 #include "wx/os2/private.h"
  41
  42 // wxDataObject is tied to OLE/drag and drop implementation,
  43 // therefore so is wxClipboard :-(
  44 #if wxUSE_DRAG_AND_DROP
  45     #include "wx/dataobj.h"
  46
  47 //    static bool wxSetClipboardData(wxDataObject *data);
  48 #endif
  49
  50 // ===========================================================================
  51 // implementation
  52 // ===========================================================================
  53
  54 // ---------------------------------------------------------------------------
  55 // old-style clipboard functions using Windows API
  56 // ---------------------------------------------------------------------------
  57
  58 static bool gs_wxClipboardIsOpen = FALSE;
  59
  60 bool wxOpenClipboard()
  61 {
  62     wxCHECK_MSG( !gs_wxClipboardIsOpen, TRUE, wxT("clipboard already opened.") );
  63 // TODO:
  64 /*
  65     wxWindow *win = wxTheApp->GetTopWindow();
  66     if ( win )
  67     {
  68         gs_wxClipboardIsOpen = ::OpenClipboard((HWND)win->GetHWND()) != 0;
  69
  70         if ( !gs_wxClipboardIsOpen )
  71             wxLogSysError(_("Failed to open the clipboard."));
  72
  73         return gs_wxClipboardIsOpen;
  74     }
  75     else
  76     {
  77         wxLogDebug(wxT("Can not open clipboard without a main window."));
  78
  79         return FALSE;
  80     }
  81 */
  82     return FALSE;
  83 }
  84
  85 bool wxCloseClipboard()
  86 {
  87     wxCHECK_MSG( gs_wxClipboardIsOpen, FALSE, wxT("clipboard is not opened") );
  88 // TODO:
  89 /*
  90     gs_wxClipboardIsOpen = FALSE;
  91
  92     if ( ::CloseClipboard() == 0 )
  93     {
  94         wxLogSysError(_("Failed to close the clipboard."));
  95
  96         return FALSE;
  97     }
  98 */
  99     return TRUE;
 100 }
 101
 102 bool wxEmptyClipboard()
 103 {
 104 // TODO:
 105 /*
 106     if ( ::EmptyClipboard() == 0 )
 107     {
 108         wxLogSysError(_("Failed to empty the clipboard."));
 109
 110         return FALSE;
 111     }
 112 */
 113     return TRUE;
 114 }
 115
 116 bool wxIsClipboardOpened()
 117 {
 118   return gs_wxClipboardIsOpen;
 119 }
 120
 121 bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
 122 {
 123     // TODO: return ::IsClipboardFormatAvailable(dataFormat) != 0;
 124     return FALSE;
 125 }
 126
 127 #if 0
 128 #if wxUSE_DRAG_AND_DROP
 129 static bool wxSetClipboardData(wxDataObject *data)
 130 {
 131     // TODO:
 132 /*
 133     size_t size = data->GetDataSize();
 134     HANDLE hGlobal = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, size);
 135     if ( !hGlobal )
 136     {
 137         wxLogSysError(_("Failed to allocate %dKb of memory for clipboard "
 138                         "transfer."), size / 1024);
 139
 140         return FALSE;
 141     }
 142
 143     LPVOID lpGlobalMemory = ::GlobalLock(hGlobal);
 144
 145     data->GetDataHere(lpGlobalMemory);
 146
 147     GlobalUnlock(hGlobal);
 148
 149     wxDataFormat format = data->GetPreferredFormat();
 150     if ( !::SetClipboardData(format, hGlobal) )
 151     {
 152         wxLogSysError(_("Failed to set clipboard data in format %s"),
 153                       wxDataObject::GetFormatName(format));
 154
 155         return FALSE;
 156     }
 157 */
 158     return TRUE;
 159 }
 160 #endif // wxUSE_DRAG_AND_DROP
 161 #endif
 162
 163 bool wxSetClipboardData(wxDataFormat dataFormat,
 164                         const void *data,
 165                         int width, int height)
 166 {
 167 // TODO:
 168 /*
 169     HANDLE handle = 0; // return value of SetClipboardData
 170     switch (dataFormat)
 171     {
 172         case wxDF_BITMAP:
 173             {
 174                 wxBitmap *bitmap = (wxBitmap *)data;
 175
 176                 HDC hdcMem = CreateCompatibleDC((HDC) NULL);
 177                 HDC hdcSrc = CreateCompatibleDC((HDC) NULL);
 178                 HBITMAP old = (HBITMAP)
 179                     ::SelectObject(hdcSrc, (HBITMAP)bitmap->GetHBITMAP());
 180                 HBITMAP hBitmap = CreateCompatibleBitmap(hdcSrc,
 181                                                          bitmap->GetWidth(),
 182                                                          bitmap->GetHeight());
 183                 if (!hBitmap)
 184                 {
 185                     SelectObject(hdcSrc, old);
 186                     DeleteDC(hdcMem);
 187                     DeleteDC(hdcSrc);
 188                     return FALSE;
 189                 }
 190
 191                 HBITMAP old1 = (HBITMAP) SelectObject(hdcMem, hBitmap);
 192                 BitBlt(hdcMem, 0, 0, bitmap->GetWidth(), bitmap->GetHeight(),
 193                        hdcSrc, 0, 0, SRCCOPY);
 194
 195                 // Select new bitmap out of memory DC
 196                 SelectObject(hdcMem, old1);
 197
 198                 // Set the data
 199                 handle = ::SetClipboardData(CF_BITMAP, hBitmap);
 200
 201                 // Clean up
 202                 SelectObject(hdcSrc, old);
 203                 DeleteDC(hdcSrc);
 204                 DeleteDC(hdcMem);
 205                 break;
 206             }
 207
 208         case wxDF_DIB:
 209             {
 210 #if wxUSE_IMAGE_LOADING_IN_MSW
 211                 wxBitmap *bitmap = (wxBitmap *)data;
 212                 HBITMAP hBitmap = (HBITMAP)bitmap->GetHBITMAP();
 213                 // NULL palette means to use the system one
 214                 HANDLE hDIB = wxBitmapToDIB(hBitmap, (HPALETTE)NULL);
 215                 handle = SetClipboardData(CF_DIB, hDIB);
 216 #endif
 217                 break;
 218             }
 219
 220 #if wxUSE_METAFILE
 221         case wxDF_METAFILE:
 222             {
 223                 wxMetafile *wxMF = (wxMetafile *)data;
 224                 HANDLE data = GlobalAlloc(GHND, sizeof(METAFILEPICT) + 1);
 225                 METAFILEPICT *mf = (METAFILEPICT *)GlobalLock(data);
 226
 227                 mf->mm = wxMF->GetWindowsMappingMode();
 228                 mf->xExt = width;
 229                 mf->yExt = height;
 230                 mf->hMF = (HMETAFILE) wxMF->GetHMETAFILE();
 231                 GlobalUnlock(data);
 232                 wxMF->SetHMETAFILE((WXHANDLE) NULL);
 233
 234                 handle = SetClipboardData(CF_METAFILEPICT, data);
 235                 break;
 236             }
 237 #endif
 238         case CF_SYLK:
 239         case CF_DIF:
 240         case CF_TIFF:
 241         case CF_PALETTE:
 242         default:
 243             {
 244                 wxLogError(_("Unsupported clipboard format."));
 245                 return FALSE;
 246             }
 247
 248         case wxDF_OEMTEXT:
 249             dataFormat = wxDF_TEXT;
 250             // fall through
 251
 252         case wxDF_TEXT:
 253             {
 254                 char *s = (char *)data;
 255
 256                 width = strlen(s) + 1;
 257                 height = 1;
 258                 DWORD l = (width * height);
 259                 HANDLE hGlobalMemory = GlobalAlloc(GHND, l);
 260                 if ( hGlobalMemory )
 261                 {
 262                     LPSTR lpGlobalMemory = (LPSTR)GlobalLock(hGlobalMemory);
 263
 264                     memcpy(lpGlobalMemory, s, l);
 265
 266                     GlobalUnlock(hGlobalMemory);
 267                 }
 268
 269                 handle = SetClipboardData(dataFormat, hGlobalMemory);
 270                 break;
 271             }
 272     }
 273
 274     if ( handle == 0 )
 275     {
 276         wxLogSysError(_("Failed to set clipboard data."));
 277
 278         return FALSE;
 279     }
 280 */
 281     return TRUE;
 282 }
 283
 284 void *wxGetClipboardData(wxDataFormat dataFormat, long *len)
 285 {
 286 //  void *retval = NULL;
 287 // TODO:
 288 /*
 289     switch ( dataFormat )
 290     {
 291         case wxDF_BITMAP:
 292             {
 293                 BITMAP bm;
 294                 HBITMAP hBitmap = (HBITMAP) GetClipboardData(CF_BITMAP);
 295                 if (!hBitmap)
 296                     break;
 297
 298                 HDC hdcMem = CreateCompatibleDC((HDC) NULL);
 299                 HDC hdcSrc = CreateCompatibleDC((HDC) NULL);
 300
 301                 HBITMAP old = (HBITMAP) ::SelectObject(hdcSrc, hBitmap);
 302                 GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm);
 303
 304                 HBITMAP hNewBitmap = CreateBitmapIndirect(&bm);
 305
 306                 if (!hNewBitmap)
 307                 {
 308                     SelectObject(hdcSrc, old);
 309                     DeleteDC(hdcMem);
 310                     DeleteDC(hdcSrc);
 311                     break;
 312                 }
 313
 314                 HBITMAP old1 = (HBITMAP) SelectObject(hdcMem, hNewBitmap);
 315                 BitBlt(hdcMem, 0, 0, bm.bmWidth, bm.bmHeight,
 316                        hdcSrc, 0, 0, SRCCOPY);
 317
 318                 // Select new bitmap out of memory DC
 319                 SelectObject(hdcMem, old1);
 320
 321                 // Clean up
 322                 SelectObject(hdcSrc, old);
 323                 DeleteDC(hdcSrc);
 324                 DeleteDC(hdcMem);
 325
 326                 // Create and return a new wxBitmap
 327                 wxBitmap *wxBM = new wxBitmap;
 328                 wxBM->SetHBITMAP((WXHBITMAP) hNewBitmap);
 329                 wxBM->SetWidth(bm.bmWidth);
 330                 wxBM->SetHeight(bm.bmHeight);
 331                 wxBM->SetDepth(bm.bmPlanes);
 332                 wxBM->SetOk(TRUE);
 333                 retval = wxBM;
 334                 break;
 335             }
 336
 337         case wxDF_METAFILE:
 338         case CF_SYLK:
 339         case CF_DIF:
 340         case CF_TIFF:
 341         case CF_PALETTE:
 342         case wxDF_DIB:
 343             {
 344                 wxLogError(_("Unsupported clipboard format."));
 345                 return FALSE;
 346             }
 347
 348         case wxDF_OEMTEXT:
 349             dataFormat = wxDF_TEXT;
 350             // fall through
 351
 352         case wxDF_TEXT:
 353             {
 354                 HANDLE hGlobalMemory = ::GetClipboardData(dataFormat);
 355                 if (!hGlobalMemory)
 356                     break;
 357
 358                 DWORD hsize = ::GlobalSize(hGlobalMemory);
 359                 if (len)
 360                     *len = hsize;
 361
 362                 char *s = new char[hsize];
 363                 if (!s)
 364                     break;
 365
 366                 LPSTR lpGlobalMemory = (LPSTR)::GlobalLock(hGlobalMemory);
 367
 368                 memcpy(s, lpGlobalMemory, hsize);
 369
 370                 ::GlobalUnlock(hGlobalMemory);
 371
 372                 retval = s;
 373                 break;
 374             }
 375
 376         default:
 377             {
 378                 HANDLE hGlobalMemory = ::GetClipboardData(dataFormat);
 379                 if ( !hGlobalMemory )
 380                     break;
 381
 382                 DWORD size = ::GlobalSize(hGlobalMemory);
 383                 if ( len )
 384                     *len = size;
 385
 386                 void *buf = malloc(size);
 387                 if ( !buf )
 388                     break;
 389
 390                 LPSTR lpGlobalMemory = (LPSTR)::GlobalLock(hGlobalMemory);
 391
 392                 memcpy(buf, lpGlobalMemory, size);
 393
 394                 ::GlobalUnlock(hGlobalMemory);
 395
 396                 retval = buf;
 397                 break;
 398             }
 399     }
 400
 401     if ( !retval )
 402     {
 403         wxLogSysError(_("Failed to retrieve data from the clipboard."));
 404     }
 405
 406     return retval;
 407 */
 408     return NULL;
 409 }
 410
 411 wxDataFormat wxEnumClipboardFormats(wxDataFormat dataFormat)
 412 {
 413   // TODO: return ::EnumClipboardFormats(dataFormat);
 414   return dataFormat;
 415 }
 416
 417 int wxRegisterClipboardFormat(wxChar *formatName)
 418 {
 419   // TODO: return ::RegisterClipboardFormat(formatName);
 420   return 0;
 421 }
 422
 423 bool wxGetClipboardFormatName(wxDataFormat dataFormat,
 424                               wxChar *formatName,
 425                               int maxCount)
 426 {
 427   // TODO: return ::GetClipboardFormatName((int)dataFormat, formatName, maxCount) > 0;
 428   return 0;
 429 }
 430
 431 // ---------------------------------------------------------------------------
 432 // wxClipboard
 433 // ---------------------------------------------------------------------------
 434
 435 IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
 436
 437 wxClipboard::wxClipboard()
 438 {
 439 }
 440
 441 wxClipboard::~wxClipboard()
 442 {
 443     Clear();
 444 }
 445
 446 void wxClipboard::Clear()
 447 {
 448 }
 449
 450 bool wxClipboard::Flush()
 451 {
 452     // TODO:
 453     return FALSE;
 454 }
 455
 456 bool wxClipboard::Open()
 457 {
 458     return wxOpenClipboard();
 459 }
 460
 461 bool wxClipboard::IsOpened() const
 462 {
 463     return wxIsClipboardOpened();
 464 }
 465
 466 bool wxClipboard::SetData( wxDataObject *data )
 467 {
 468     (void)wxEmptyClipboard();
 469     // TODO:
 470     /*
 471     if ( data )
 472         return AddData(data);
 473     else
 474         return TRUE;
 475     */
 476     return TRUE;
 477 }
 478
 479 bool wxClipboard::AddData( wxDataObject *data )
 480 {
 481     wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
 482
 483 #if wxUSE_DRAG_AND_DROP
 484     wxCHECK_MSG( wxIsClipboardOpened(), FALSE, wxT("clipboard not open") );
 485
 486 //    wxDataFormat format = data->GetPreferredFormat();
 487 // TODO:
 488 /*
 489     switch ( format )
 490     {
 491         case wxDF_TEXT:
 492         case wxDF_OEMTEXT:
 493         {
 494             wxTextDataObject* textDataObject = (wxTextDataObject*) data;
 495             wxString str(textDataObject->GetText());
 496             return wxSetClipboardData(format, str.c_str());
 497         }
 498
 499         case wxDF_BITMAP:
 500         case wxDF_DIB:
 501         {
 502             wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data;
 503             wxBitmap bitmap(bitmapDataObject->GetBitmap());
 504             return wxSetClipboardData(data->GetPreferredFormat(), &bitmap);
 505         }
 506
 507 #if wxUSE_METAFILE
 508         case wxDF_METAFILE:
 509         {
 510             wxMetafileDataObject* metaFileDataObject =
 511                 (wxMetafileDataObject*) data;
 512             wxMetafile metaFile = metaFileDataObject->GetMetafile();
 513             return wxSetClipboardData(wxDF_METAFILE, &metaFile,
 514                                       metaFileDataObject->GetWidth(),
 515                                       metaFileDataObject->GetHeight());
 516         }
 517 #endif // wxUSE_METAFILE
 518
 519         default:
 520             return wxSetClipboardData(data);
 521     }
 522 #else // !wxUSE_DRAG_AND_DROP
 523 */
 524     return FALSE;
 525 #else
 526     return FALSE;
 527 #endif // wxUSE_DRAG_AND_DROP/!wxUSE_DRAG_AND_DROP
 528 }
 529
 530 void wxClipboard::Close()
 531 {
 532     wxCloseClipboard();
 533 }
 534
 535 bool wxClipboard::IsSupported( const wxDataFormat& format )
 536 {
 537     return wxIsClipboardFormatAvailable(format);
 538 }
 539
 540 bool wxClipboard::GetData( wxDataObject& data )
 541 {
 542     wxCHECK_MSG( wxIsClipboardOpened(), FALSE, wxT("clipboard not open") );
 543
 544 #if wxUSE_DRAG_AND_DROP
 545 //    wxDataFormat format = data.GetPreferredFormat();
 546     // TODO:
 547 /*
 548     switch ( format )
 549     {
 550         case wxDF_TEXT:
 551         case wxDF_OEMTEXT:
 552         {
 553             wxTextDataObject& textDataObject = (wxTextDataObject&) data;
 554             char* s = (char*) wxGetClipboardData(format);
 555             if ( s )
 556             {
 557                 textDataObject.SetText(s);
 558                 delete[] s;
 559                 return TRUE;
 560             }
 561             else
 562                 return FALSE;
 563         }
 564
 565         case wxDF_BITMAP:
 566         case wxDF_DIB:
 567         {
 568             wxBitmapDataObject& bitmapDataObject = (wxBitmapDataObject &)data;
 569             wxBitmap* bitmap = (wxBitmap *)wxGetClipboardData(data->GetPreferredFormat());
 570             if (bitmap)
 571             {
 572                 bitmapDataObject.SetBitmap(* bitmap);
 573                 delete bitmap;
 574                 return TRUE;
 575             }
 576             else
 577                 return FALSE;
 578         }
 579 #if wxUSE_METAFILE
 580         case wxDF_METAFILE:
 581         {
 582             wxMetafileDataObject& metaFileDataObject = (wxMetafileDataObject &)data;
 583             wxMetafile* metaFile = (wxMetafile *)wxGetClipboardData(wxDF_METAFILE);
 584             if (metaFile)
 585             {
 586                 metaFileDataObject.SetMetafile(*metaFile);
 587                 delete metaFile;
 588                 return TRUE;
 589             }
 590             else
 591                 return FALSE;
 592         }
 593 #endif
 594         default:
 595             {
 596                 long len;
 597                 void *buf = wxGetClipboardData(format, &len);
 598                 if ( buf )
 599                 {
 600                     // FIXME this is for testing only!!
 601                     ((wxPrivateDataObject &)data).SetData(buf, len);
 602                     free(buf);
 603
 604                     return TRUE;
 605                 }
 606             }
 607
 608             return FALSE;
 609     }
 610 #else
 611 */
 612     return FALSE;
 613 #else
 614     return FALSE;
 615 #endif
 616 }
 617
 618 #else
 619     #error "Please turn wxUSE_CLIPBOARD on to compile this file."
 620 #endif // wxUSE_CLIPBOARD
 621