| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: clipbrd.cpp |
| 3 | // Purpose: Clipboard functionality |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 17/09/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation |
| 14 | #pragma implementation "clipbrd.h" |
| 15 | #endif |
| 16 | |
| 17 | #include "wx/defs.h" |
| 18 | |
| 19 | #if wxUSE_CLIPBOARD |
| 20 | |
| 21 | #include "wx/app.h" |
| 22 | #include "wx/frame.h" |
| 23 | #include "wx/bitmap.h" |
| 24 | #include "wx/utils.h" |
| 25 | #include "wx/metafile.h" |
| 26 | #include "wx/clipbrd.h" |
| 27 | #include "wx/dataobj.h" |
| 28 | |
| 29 | #ifdef __VMS__ |
| 30 | #pragma message disable nosimpint |
| 31 | #endif |
| 32 | #include <Xm/Xm.h> |
| 33 | #include <Xm/CutPaste.h> |
| 34 | #ifdef __VMS__ |
| 35 | #pragma message enable nosimpint |
| 36 | #endif |
| 37 | |
| 38 | #include <string.h> |
| 39 | |
| 40 | // IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject) |
| 41 | // IMPLEMENT_ABSTRACT_CLASS(wxClipboardClient, wxObject) |
| 42 | |
| 43 | static bool gs_clipboardIsOpen = FALSE; |
| 44 | |
| 45 | bool wxOpenClipboard() |
| 46 | { |
| 47 | if (!gs_clipboardIsOpen) |
| 48 | { |
| 49 | gs_clipboardIsOpen = TRUE; |
| 50 | return TRUE; |
| 51 | } |
| 52 | else |
| 53 | return FALSE; |
| 54 | } |
| 55 | |
| 56 | bool wxCloseClipboard() |
| 57 | { |
| 58 | if (gs_clipboardIsOpen) |
| 59 | { |
| 60 | gs_clipboardIsOpen = FALSE; |
| 61 | return TRUE; |
| 62 | } |
| 63 | else |
| 64 | return FALSE; |
| 65 | } |
| 66 | |
| 67 | bool wxEmptyClipboard() |
| 68 | { |
| 69 | // No equivalent in Motif |
| 70 | return TRUE; |
| 71 | } |
| 72 | |
| 73 | bool wxClipboardOpen() |
| 74 | { |
| 75 | return gs_clipboardIsOpen; |
| 76 | } |
| 77 | |
| 78 | bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat) |
| 79 | { |
| 80 | // Only text is supported. |
| 81 | if (dataFormat != wxDF_TEXT) |
| 82 | return FALSE; |
| 83 | |
| 84 | unsigned long numBytes = 0; |
| 85 | long privateId = 0; |
| 86 | |
| 87 | Window window = (Window) 0; |
| 88 | if (wxTheApp->GetTopWindow()) |
| 89 | window = XtWindow( (Widget) wxTheApp->GetTopWindow()->GetTopWidget() ); |
| 90 | |
| 91 | int success = XmClipboardRetrieve((Display*) wxGetDisplay(), |
| 92 | window, "TEXT", (XtPointer) 0, 0, & numBytes, & privateId) ; |
| 93 | |
| 94 | // Assume only text is supported. If we have anything at all, |
| 95 | // or the clipboard is locked so we're not sure, we say we support it. |
| 96 | if (success == ClipboardNoData) |
| 97 | return FALSE; |
| 98 | else |
| 99 | return TRUE; |
| 100 | } |
| 101 | |
| 102 | bool wxSetClipboardData(wxDataFormat dataFormat, wxObject *obj, int WXUNUSED(width), int WXUNUSED(height)) |
| 103 | { |
| 104 | if (dataFormat != wxDF_TEXT) |
| 105 | return FALSE; |
| 106 | |
| 107 | char* data = (char*) obj; |
| 108 | |
| 109 | XmString text = XmStringCreateSimple ("CLIPBOARD"); |
| 110 | Window window = (Window) 0; |
| 111 | if (wxTheApp->GetTopWindow()) |
| 112 | window = XtWindow( (Widget) wxTheApp->GetTopWindow()->GetTopWidget() ); |
| 113 | |
| 114 | long itemId = 0; |
| 115 | int result = 0; |
| 116 | |
| 117 | while ((result = |
| 118 | XmClipboardStartCopy((Display*) wxGetDisplay(), |
| 119 | window, |
| 120 | text, |
| 121 | XtLastTimestampProcessed((Display*) wxGetDisplay()), |
| 122 | (Widget) 0, |
| 123 | (XmCutPasteProc) 0, |
| 124 | & itemId)) != ClipboardSuccess) |
| 125 | |
| 126 | ; |
| 127 | |
| 128 | XmStringFree (text); |
| 129 | |
| 130 | long dataId = 0; |
| 131 | while ((result = |
| 132 | XmClipboardCopy((Display*) wxGetDisplay(), |
| 133 | window, |
| 134 | itemId, |
| 135 | "TEXT", |
| 136 | (XtPointer) data, |
| 137 | strlen(data) + 1, |
| 138 | 0, |
| 139 | & dataId)) != ClipboardSuccess) |
| 140 | |
| 141 | ; |
| 142 | |
| 143 | while (( result = |
| 144 | XmClipboardEndCopy((Display*) wxGetDisplay(), |
| 145 | window, itemId) ) != ClipboardSuccess) |
| 146 | |
| 147 | ; |
| 148 | |
| 149 | return TRUE; |
| 150 | } |
| 151 | |
| 152 | wxObject *wxGetClipboardData(wxDataFormat dataFormat, long *len) |
| 153 | { |
| 154 | if (dataFormat != wxDF_TEXT) |
| 155 | return (wxObject*) NULL; |
| 156 | |
| 157 | bool done = FALSE; |
| 158 | long id = 0; |
| 159 | unsigned long numBytes = 0; |
| 160 | int result = 0; |
| 161 | Window window = (Window) 0; |
| 162 | if (wxTheApp->GetTopWindow()) |
| 163 | window = XtWindow( (Widget) wxTheApp->GetTopWindow()->GetTopWidget() ); |
| 164 | |
| 165 | int currentDataSize = 256; |
| 166 | char* data = new char[currentDataSize]; |
| 167 | |
| 168 | while (!done) |
| 169 | { |
| 170 | if (result == ClipboardTruncate) |
| 171 | { |
| 172 | delete[] data; |
| 173 | currentDataSize = 2*currentDataSize; |
| 174 | data = new char[currentDataSize]; |
| 175 | } |
| 176 | result = XmClipboardRetrieve((Display*) wxGetDisplay(), |
| 177 | window, |
| 178 | "TEXT", |
| 179 | (XtPointer) data, |
| 180 | currentDataSize, |
| 181 | &numBytes, |
| 182 | &id); |
| 183 | |
| 184 | switch (result) |
| 185 | { |
| 186 | case ClipboardSuccess: |
| 187 | { |
| 188 | if (len) |
| 189 | *len = strlen(data) + 1; |
| 190 | return (wxObject*) data; |
| 191 | break; |
| 192 | } |
| 193 | case ClipboardTruncate: |
| 194 | case ClipboardLocked: |
| 195 | { |
| 196 | break; |
| 197 | } |
| 198 | default: |
| 199 | case ClipboardNoData: |
| 200 | { |
| 201 | return (wxObject*) NULL; |
| 202 | break; |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | } |
| 207 | |
| 208 | return NULL; |
| 209 | } |
| 210 | |
| 211 | wxDataFormat wxEnumClipboardFormats(wxDataFormat dataFormat) |
| 212 | { |
| 213 | // Only wxDF_TEXT supported |
| 214 | if (dataFormat == wxDF_TEXT) |
| 215 | return wxDF_TEXT; |
| 216 | else |
| 217 | return wxDF_INVALID; |
| 218 | } |
| 219 | |
| 220 | wxDataFormat wxRegisterClipboardFormat(char *WXUNUSED(formatName)) |
| 221 | { |
| 222 | // Not supported |
| 223 | return (wxDataFormat) wxDF_INVALID; |
| 224 | } |
| 225 | |
| 226 | bool wxGetClipboardFormatName(wxDataFormat dataFormat, char *formatName, int WXUNUSED(maxCount)) |
| 227 | { |
| 228 | // Only wxDF_TEXT supported |
| 229 | if (dataFormat == wxDF_TEXT) |
| 230 | { |
| 231 | strcpy(formatName, "TEXT"); |
| 232 | return TRUE; |
| 233 | } |
| 234 | else |
| 235 | return FALSE; |
| 236 | } |
| 237 | |
| 238 | //----------------------------------------------------------------------------- |
| 239 | // wxClipboard |
| 240 | //----------------------------------------------------------------------------- |
| 241 | |
| 242 | IMPLEMENT_DYNAMIC_CLASS(wxClipboard,wxObject) |
| 243 | |
| 244 | wxClipboard::wxClipboard() |
| 245 | { |
| 246 | m_open = FALSE; |
| 247 | } |
| 248 | |
| 249 | wxClipboard::~wxClipboard() |
| 250 | { |
| 251 | Clear(); |
| 252 | } |
| 253 | |
| 254 | void wxClipboard::Clear() |
| 255 | { |
| 256 | wxNode* node = m_data.First(); |
| 257 | while (node) |
| 258 | { |
| 259 | wxDataObject* data = (wxDataObject*) node->Data(); |
| 260 | delete data; |
| 261 | node = node->Next(); |
| 262 | } |
| 263 | m_data.Clear(); |
| 264 | } |
| 265 | |
| 266 | bool wxClipboard::Open() |
| 267 | { |
| 268 | wxCHECK_MSG( !m_open, FALSE, "clipboard already open" ); |
| 269 | |
| 270 | m_open = TRUE; |
| 271 | |
| 272 | return wxOpenClipboard(); |
| 273 | } |
| 274 | |
| 275 | bool wxClipboard::SetData( wxDataObject *data ) |
| 276 | { |
| 277 | wxCHECK_MSG( data, FALSE, "data is invalid" ); |
| 278 | wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); |
| 279 | |
| 280 | Clear(); |
| 281 | |
| 282 | return AddData( data ); |
| 283 | } |
| 284 | |
| 285 | bool wxClipboard::AddData( wxDataObject *data ) |
| 286 | { |
| 287 | wxCHECK_MSG( data, FALSE, "data is invalid" ); |
| 288 | wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); |
| 289 | |
| 290 | wxDataFormat::NativeFormat format = data->GetPreferredFormat().GetType(); |
| 291 | switch ( format ) |
| 292 | { |
| 293 | case wxDF_TEXT: |
| 294 | case wxDF_OEMTEXT: |
| 295 | { |
| 296 | wxTextDataObject* textDataObject = (wxTextDataObject*) data; |
| 297 | wxString str(textDataObject->GetText()); |
| 298 | return wxSetClipboardData(format, (wxObject*) (const char*) str); |
| 299 | } |
| 300 | #if 0 |
| 301 | case wxDF_BITMAP: |
| 302 | case wxDF_DIB: |
| 303 | { |
| 304 | wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data; |
| 305 | wxBitmap bitmap(bitmapDataObject->GetBitmap()); |
| 306 | return wxSetClipboardData(data->GetType(), & bitmap); |
| 307 | break; |
| 308 | } |
| 309 | #endif // 0 |
| 310 | } |
| 311 | |
| 312 | return FALSE; |
| 313 | } |
| 314 | |
| 315 | void wxClipboard::Close() |
| 316 | { |
| 317 | wxCHECK_RET( m_open, "clipboard not open" ); |
| 318 | |
| 319 | m_open = FALSE; |
| 320 | wxCloseClipboard(); |
| 321 | } |
| 322 | |
| 323 | bool wxClipboard::IsSupported( const wxDataFormat& format) |
| 324 | { |
| 325 | return wxIsClipboardFormatAvailable(format); |
| 326 | } |
| 327 | |
| 328 | bool wxClipboard::GetData( wxDataObject& data ) |
| 329 | { |
| 330 | wxCHECK_MSG( m_open, FALSE, "clipboard not open" ); |
| 331 | |
| 332 | wxDataFormat::NativeFormat format = data.GetPreferredFormat().GetType(); |
| 333 | switch ( format ) |
| 334 | { |
| 335 | case wxDF_TEXT: |
| 336 | case wxDF_OEMTEXT: |
| 337 | { |
| 338 | wxTextDataObject& textDataObject = (wxTextDataObject &) data; |
| 339 | char* s = (char*) wxGetClipboardData(format); |
| 340 | if (s) |
| 341 | { |
| 342 | textDataObject.SetText(s); |
| 343 | delete[] s; |
| 344 | return TRUE; |
| 345 | } |
| 346 | else |
| 347 | return FALSE; |
| 348 | break; |
| 349 | } |
| 350 | /* |
| 351 | case wxDF_BITMAP: |
| 352 | case wxDF_DIB: |
| 353 | { |
| 354 | wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject*) data; |
| 355 | wxBitmap* bitmap = (wxBitmap*) wxGetClipboardData(data->GetType()); |
| 356 | if (bitmap) |
| 357 | { |
| 358 | bitmapDataObject->SetBitmap(* bitmap); |
| 359 | delete bitmap; |
| 360 | return TRUE; |
| 361 | } |
| 362 | else |
| 363 | return FALSE; |
| 364 | break; |
| 365 | } |
| 366 | */ |
| 367 | default: |
| 368 | { |
| 369 | return FALSE; |
| 370 | } |
| 371 | } |
| 372 | return FALSE; |
| 373 | } |
| 374 | |
| 375 | #if 0 |
| 376 | |
| 377 | /* |
| 378 | * Old clipboard implementation by Matthew Flatt |
| 379 | */ |
| 380 | |
| 381 | wxClipboard *wxTheClipboard = NULL; |
| 382 | |
| 383 | void wxInitClipboard() |
| 384 | { |
| 385 | if (!wxTheClipboard) |
| 386 | wxTheClipboard = new wxClipboard; |
| 387 | } |
| 388 | |
| 389 | wxClipboard::wxClipboard() |
| 390 | { |
| 391 | clipOwner = NULL; |
| 392 | cbString = NULL; |
| 393 | } |
| 394 | |
| 395 | wxClipboard::~wxClipboard() |
| 396 | { |
| 397 | if (clipOwner) |
| 398 | clipOwner->BeingReplaced(); |
| 399 | if (cbString) |
| 400 | delete[] cbString; |
| 401 | } |
| 402 | |
| 403 | static int FormatStringToID(char *str) |
| 404 | { |
| 405 | if (!strcmp(str, "TEXT")) |
| 406 | return wxDF_TEXT; |
| 407 | |
| 408 | return wxRegisterClipboardFormat(str); |
| 409 | } |
| 410 | |
| 411 | void wxClipboard::SetClipboardClient(wxClipboardClient *client, long time) |
| 412 | { |
| 413 | bool got_selection; |
| 414 | |
| 415 | if (clipOwner) |
| 416 | clipOwner->BeingReplaced(); |
| 417 | clipOwner = client; |
| 418 | if (cbString) { |
| 419 | delete[] cbString; |
| 420 | cbString = NULL; |
| 421 | } |
| 422 | |
| 423 | if (wxOpenClipboard()) { |
| 424 | char **formats, *data; |
| 425 | int i; |
| 426 | int ftype; |
| 427 | long size; |
| 428 | |
| 429 | formats = clipOwner->formats.ListToArray(FALSE); |
| 430 | for (i = clipOwner->formats.Number(); i--; ) { |
| 431 | ftype = FormatStringToID(formats[i]); |
| 432 | data = clipOwner->GetData(formats[i], &size); |
| 433 | if (!wxSetClipboardData(ftype, (wxObject *)data, size, 1)) { |
| 434 | got_selection = FALSE; |
| 435 | break; |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | if (i < 0) |
| 440 | got_selection = wxCloseClipboard(); |
| 441 | } else |
| 442 | got_selection = FALSE; |
| 443 | |
| 444 | got_selection = FALSE; // Assume another process takes over |
| 445 | |
| 446 | if (!got_selection) { |
| 447 | clipOwner->BeingReplaced(); |
| 448 | clipOwner = NULL; |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | wxClipboardClient *wxClipboard::GetClipboardClient() |
| 453 | { |
| 454 | return clipOwner; |
| 455 | } |
| 456 | |
| 457 | void wxClipboard::SetClipboardString(char *str, long time) |
| 458 | { |
| 459 | bool got_selection; |
| 460 | |
| 461 | if (clipOwner) { |
| 462 | clipOwner->BeingReplaced(); |
| 463 | clipOwner = NULL; |
| 464 | } |
| 465 | if (cbString) |
| 466 | delete[] cbString; |
| 467 | |
| 468 | cbString = str; |
| 469 | |
| 470 | if (wxOpenClipboard()) { |
| 471 | if (!wxSetClipboardData(wxDF_TEXT, (wxObject *)str)) |
| 472 | got_selection = FALSE; |
| 473 | else |
| 474 | got_selection = wxCloseClipboard(); |
| 475 | } else |
| 476 | got_selection = FALSE; |
| 477 | |
| 478 | got_selection = FALSE; // Assume another process takes over |
| 479 | |
| 480 | if (!got_selection) { |
| 481 | delete[] cbString; |
| 482 | cbString = NULL; |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | char *wxClipboard::GetClipboardString(long time) |
| 487 | { |
| 488 | char *str; |
| 489 | long length; |
| 490 | |
| 491 | str = GetClipboardData("TEXT", &length, time); |
| 492 | if (!str) { |
| 493 | str = new char[1]; |
| 494 | *str = 0; |
| 495 | } |
| 496 | |
| 497 | return str; |
| 498 | } |
| 499 | |
| 500 | char *wxClipboard::GetClipboardData(char *format, long *length, long time) |
| 501 | { |
| 502 | if (clipOwner) { |
| 503 | if (clipOwner->formats.Member(format)) |
| 504 | return clipOwner->GetData(format, length); |
| 505 | else |
| 506 | return NULL; |
| 507 | } else if (cbString) { |
| 508 | if (!strcmp(format, "TEXT")) |
| 509 | return copystring(cbString); |
| 510 | else |
| 511 | return NULL; |
| 512 | } else { |
| 513 | if (wxOpenClipboard()) { |
| 514 | receivedString = (char *)wxGetClipboardData(FormatStringToID(format), |
| 515 | length); |
| 516 | wxCloseClipboard(); |
| 517 | } else |
| 518 | receivedString = NULL; |
| 519 | |
| 520 | return receivedString; |
| 521 | } |
| 522 | } |
| 523 | #endif |
| 524 | |
| 525 | #endif // wxUSE_CLIPBOARD |