| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: clipbrd.cpp |
| 3 | // Purpose: Clipboard functionality |
| 4 | // Author: Stefan Csomor |
| 5 | // Modified by: |
| 6 | // Created: 1998-01-01 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Stefan Csomor |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "clipbrd.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/app.h" |
| 17 | #include "wx/frame.h" |
| 18 | #include "wx/bitmap.h" |
| 19 | #include "wx/utils.h" |
| 20 | #include "wx/metafile.h" |
| 21 | #include "wx/clipbrd.h" |
| 22 | #include "wx/intl.h" |
| 23 | #include "wx/log.h" |
| 24 | |
| 25 | #ifndef __DARWIN__ |
| 26 | #include <Scrap.h> |
| 27 | #endif |
| 28 | #include "wx/mac/uma.h" |
| 29 | |
| 30 | #define wxUSE_DATAOBJ 1 |
| 31 | |
| 32 | #include <string.h> |
| 33 | |
| 34 | // the trace mask we use with wxLogTrace() - call |
| 35 | // wxLog::AddTraceMask(TRACE_CLIPBOARD) to enable the trace messages from here |
| 36 | // (there will be a *lot* of them!) |
| 37 | static const wxChar *TRACE_CLIPBOARD = _T("clipboard"); |
| 38 | |
| 39 | void *wxGetClipboardData(wxDataFormat dataFormat, long *len) |
| 40 | { |
| 41 | #if !TARGET_CARBON |
| 42 | OSErr err = noErr ; |
| 43 | #else |
| 44 | OSStatus err = noErr ; |
| 45 | #endif |
| 46 | void * data = NULL ; |
| 47 | Size byteCount; |
| 48 | |
| 49 | switch (dataFormat.GetType()) |
| 50 | { |
| 51 | case wxDF_OEMTEXT: |
| 52 | dataFormat = wxDF_TEXT; |
| 53 | // fall through |
| 54 | |
| 55 | case wxDF_TEXT: |
| 56 | break; |
| 57 | case wxDF_UNICODETEXT: |
| 58 | break; |
| 59 | case wxDF_BITMAP : |
| 60 | case wxDF_METAFILE : |
| 61 | break ; |
| 62 | default: |
| 63 | { |
| 64 | wxLogError(_("Unsupported clipboard format.")); |
| 65 | return NULL; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | #if TARGET_CARBON |
| 70 | ScrapRef scrapRef; |
| 71 | |
| 72 | err = GetCurrentScrap( &scrapRef ); |
| 73 | if ( err != noTypeErr && err != memFullErr ) |
| 74 | { |
| 75 | ScrapFlavorFlags flavorFlags; |
| 76 | |
| 77 | if (( err = GetScrapFlavorFlags( scrapRef, dataFormat.GetFormatId(), &flavorFlags )) == noErr) |
| 78 | { |
| 79 | if (( err = GetScrapFlavorSize( scrapRef, dataFormat.GetFormatId(), &byteCount )) == noErr) |
| 80 | { |
| 81 | Size allocSize = byteCount ; |
| 82 | if ( dataFormat.GetType() == wxDF_TEXT ) |
| 83 | allocSize += 1 ; |
| 84 | else if ( dataFormat.GetType() == wxDF_UNICODETEXT ) |
| 85 | allocSize += 2 ; |
| 86 | |
| 87 | data = new char[ allocSize ] ; |
| 88 | |
| 89 | if (( err = GetScrapFlavorData( scrapRef, dataFormat.GetFormatId(), &byteCount , data )) == noErr ) |
| 90 | { |
| 91 | *len = allocSize ; |
| 92 | if ( dataFormat.GetType() == wxDF_TEXT ) |
| 93 | ((char*)data)[byteCount] = 0 ; |
| 94 | if ( dataFormat.GetType() == wxDF_UNICODETEXT ) |
| 95 | ((wxChar*)data)[byteCount/2] = 0 ; |
| 96 | } |
| 97 | else |
| 98 | { |
| 99 | delete[] ((char *)data) ; |
| 100 | data = NULL ; |
| 101 | } |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | #else |
| 107 | long offset ; |
| 108 | Handle datahandle = NewHandle(0) ; |
| 109 | HLock( datahandle ) ; |
| 110 | GetScrap( datahandle , dataFormat.GetFormatId() , &offset ) ; |
| 111 | HUnlock( datahandle ) ; |
| 112 | if ( GetHandleSize( datahandle ) > 0 ) |
| 113 | { |
| 114 | byteCount = GetHandleSize( datahandle ) ; |
| 115 | Size allocSize = byteCount ; |
| 116 | if ( dataFormat.GetType() == wxDF_TEXT ) |
| 117 | allocSize += 1 ; |
| 118 | else if ( dataFormat.GetType() == wxDF_UNICODETEXT ) |
| 119 | allocSize += 2 ; |
| 120 | |
| 121 | data = new char[ allocSize ] ; |
| 122 | |
| 123 | memcpy( (char*) data , (char*) *datahandle , byteCount ) ; |
| 124 | if ( dataFormat.GetType() == wxDF_TEXT ) |
| 125 | ((char*)data)[byteCount] = 0 ; |
| 126 | if ( dataFormat.GetType() == wxDF_UNICODETEXT ) |
| 127 | ((wxChar*)data)[byteCount/2] = 0 ; |
| 128 | *len = byteCount ; |
| 129 | } |
| 130 | DisposeHandle( datahandle ) ; |
| 131 | #endif |
| 132 | if ( err ) |
| 133 | { |
| 134 | wxLogSysError(_("Failed to get clipboard data.")); |
| 135 | |
| 136 | return NULL ; |
| 137 | } |
| 138 | |
| 139 | if ( dataFormat.GetType() == wxDF_TEXT ) |
| 140 | { |
| 141 | wxMacConvertNewlines10To13( (char*) data ) ; |
| 142 | } |
| 143 | |
| 144 | return data; |
| 145 | } |
| 146 | |
| 147 | |
| 148 | /* |
| 149 | * Generalized clipboard implementation by Matthew Flatt |
| 150 | */ |
| 151 | |
| 152 | IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject) |
| 153 | |
| 154 | wxClipboard::wxClipboard() |
| 155 | { |
| 156 | m_open = false ; |
| 157 | m_data = NULL ; |
| 158 | } |
| 159 | |
| 160 | wxClipboard::~wxClipboard() |
| 161 | { |
| 162 | if (m_data) |
| 163 | { |
| 164 | delete m_data; |
| 165 | m_data = (wxDataObject*) NULL; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | void wxClipboard::Clear() |
| 170 | { |
| 171 | if (m_data) |
| 172 | { |
| 173 | delete m_data; |
| 174 | m_data = (wxDataObject*) NULL; |
| 175 | } |
| 176 | #if TARGET_CARBON |
| 177 | OSStatus err ; |
| 178 | err = ClearCurrentScrap( ); |
| 179 | #else |
| 180 | OSErr err ; |
| 181 | err = ZeroScrap( ); |
| 182 | #endif |
| 183 | if ( err ) |
| 184 | { |
| 185 | wxLogSysError(_("Failed to empty the clipboard.")); |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | bool wxClipboard::Flush() |
| 190 | { |
| 191 | return FALSE; |
| 192 | } |
| 193 | |
| 194 | bool wxClipboard::Open() |
| 195 | { |
| 196 | wxCHECK_MSG( !m_open, FALSE, wxT("clipboard already open") ); |
| 197 | m_open = true ; |
| 198 | return true ; |
| 199 | } |
| 200 | |
| 201 | bool wxClipboard::IsOpened() const |
| 202 | { |
| 203 | return m_open; |
| 204 | } |
| 205 | |
| 206 | bool wxClipboard::SetData( wxDataObject *data ) |
| 207 | { |
| 208 | wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") ); |
| 209 | |
| 210 | wxCHECK_MSG( data, FALSE, wxT("data is invalid") ); |
| 211 | |
| 212 | Clear(); |
| 213 | // as we can only store one wxDataObject, this is the same in this |
| 214 | // implementation |
| 215 | return AddData( data ); |
| 216 | } |
| 217 | |
| 218 | bool wxClipboard::AddData( wxDataObject *data ) |
| 219 | { |
| 220 | wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") ); |
| 221 | |
| 222 | wxCHECK_MSG( data, FALSE, wxT("data is invalid") ); |
| 223 | |
| 224 | /* we can only store one wxDataObject */ |
| 225 | Clear(); |
| 226 | |
| 227 | m_data = data; |
| 228 | |
| 229 | /* get formats from wxDataObjects */ |
| 230 | wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ]; |
| 231 | m_data->GetAllFormats( array ); |
| 232 | |
| 233 | for (size_t i = 0; i < m_data->GetFormatCount(); i++) |
| 234 | { |
| 235 | wxLogTrace( TRACE_CLIPBOARD, |
| 236 | wxT("wxClipboard now supports atom %s"), |
| 237 | array[i].GetId().c_str() ); |
| 238 | |
| 239 | #if !TARGET_CARBON |
| 240 | OSErr err = noErr ; |
| 241 | #else |
| 242 | OSStatus err = noErr ; |
| 243 | #endif |
| 244 | size_t sz = data->GetDataSize( array[i] ) ; |
| 245 | void* buf = malloc( sz + 1 ) ; |
| 246 | if ( buf ) |
| 247 | { |
| 248 | data->GetDataHere( array[i] , buf ) ; |
| 249 | OSType mactype = 0 ; |
| 250 | switch ( array[i].GetType() ) |
| 251 | { |
| 252 | case wxDF_TEXT: |
| 253 | case wxDF_OEMTEXT: |
| 254 | mactype = kScrapFlavorTypeText ; |
| 255 | break ; |
| 256 | #if wxUSE_UNICODE |
| 257 | case wxDF_UNICODETEXT : |
| 258 | mactype = kScrapFlavorTypeUnicode ; |
| 259 | break ; |
| 260 | #endif |
| 261 | #if wxUSE_DRAG_AND_DROP |
| 262 | case wxDF_METAFILE: |
| 263 | mactype = kScrapFlavorTypePicture ; |
| 264 | break ; |
| 265 | #endif |
| 266 | case wxDF_BITMAP: |
| 267 | case wxDF_DIB: |
| 268 | mactype = kScrapFlavorTypePicture ; |
| 269 | break ; |
| 270 | default: |
| 271 | break ; |
| 272 | } |
| 273 | UMAPutScrap( sz , mactype , buf ) ; |
| 274 | free( buf ) ; |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | delete[] array; |
| 279 | |
| 280 | return true ; |
| 281 | } |
| 282 | |
| 283 | void wxClipboard::Close() |
| 284 | { |
| 285 | wxCHECK_RET( m_open, wxT("clipboard not open") ); |
| 286 | |
| 287 | m_open = false ; |
| 288 | |
| 289 | // Get rid of cached object. If this is not done copying from another application will |
| 290 | // only work once |
| 291 | if (m_data) |
| 292 | { |
| 293 | delete m_data; |
| 294 | m_data = (wxDataObject*) NULL; |
| 295 | } |
| 296 | |
| 297 | } |
| 298 | |
| 299 | bool wxClipboard::IsSupported( const wxDataFormat &dataFormat ) |
| 300 | { |
| 301 | if ( m_data ) |
| 302 | { |
| 303 | return m_data->IsSupported( dataFormat ) ; |
| 304 | } |
| 305 | #if TARGET_CARBON |
| 306 | OSStatus err = noErr; |
| 307 | ScrapRef scrapRef; |
| 308 | |
| 309 | err = GetCurrentScrap( &scrapRef ); |
| 310 | if ( err != noTypeErr && err != memFullErr ) |
| 311 | { |
| 312 | ScrapFlavorFlags flavorFlags; |
| 313 | Size byteCount; |
| 314 | |
| 315 | if (( err = GetScrapFlavorFlags( scrapRef, dataFormat.GetFormatId(), &flavorFlags )) == noErr) |
| 316 | { |
| 317 | if (( err = GetScrapFlavorSize( scrapRef, dataFormat.GetFormatId(), &byteCount )) == noErr) |
| 318 | { |
| 319 | return TRUE ; |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | return FALSE; |
| 324 | |
| 325 | #else |
| 326 | long offset ; |
| 327 | Handle datahandle = NewHandle(0) ; |
| 328 | HLock( datahandle ) ; |
| 329 | GetScrap( datahandle , dataFormat.GetFormatId() , &offset ) ; |
| 330 | HUnlock( datahandle ) ; |
| 331 | bool hasData = GetHandleSize( datahandle ) > 0 ; |
| 332 | DisposeHandle( datahandle ) ; |
| 333 | return hasData ; |
| 334 | #endif |
| 335 | } |
| 336 | |
| 337 | bool wxClipboard::GetData( wxDataObject& data ) |
| 338 | { |
| 339 | wxCHECK_MSG( m_open, FALSE, wxT("clipboard not open") ); |
| 340 | |
| 341 | size_t formatcount = data.GetFormatCount() + 1 ; |
| 342 | wxDataFormat *array = new wxDataFormat[ formatcount ]; |
| 343 | array[0] = data.GetPreferredFormat(); |
| 344 | data.GetAllFormats( &array[1] ); |
| 345 | |
| 346 | bool transferred = false ; |
| 347 | |
| 348 | if ( m_data ) |
| 349 | { |
| 350 | for (size_t i = 0; !transferred && i < formatcount ; i++) |
| 351 | { |
| 352 | wxDataFormat format = array[i] ; |
| 353 | if ( m_data->IsSupported( format ) ) |
| 354 | { |
| 355 | int size = m_data->GetDataSize( format ); |
| 356 | transferred = true ; |
| 357 | |
| 358 | if (size == 0) |
| 359 | { |
| 360 | data.SetData(format , 0 , 0 ) ; |
| 361 | } |
| 362 | else |
| 363 | { |
| 364 | char *d = new char[size]; |
| 365 | m_data->GetDataHere( format , (void*) d ); |
| 366 | data.SetData( format , size , d ) ; |
| 367 | delete[] d ; |
| 368 | } |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | /* get formats from wxDataObjects */ |
| 373 | if ( !transferred ) |
| 374 | { |
| 375 | for (size_t i = 0; !transferred && i < formatcount ; i++) |
| 376 | { |
| 377 | wxDataFormat format = array[i] ; |
| 378 | |
| 379 | switch ( format.GetType() ) |
| 380 | { |
| 381 | case wxDF_TEXT : |
| 382 | case wxDF_OEMTEXT : |
| 383 | case wxDF_BITMAP : |
| 384 | case wxDF_METAFILE : |
| 385 | { |
| 386 | long len ; |
| 387 | char* s = (char*)wxGetClipboardData(format, &len ); |
| 388 | if ( s ) |
| 389 | { |
| 390 | data.SetData( format , len , s ) ; |
| 391 | delete [] s; |
| 392 | |
| 393 | transferred = true ; |
| 394 | } |
| 395 | } |
| 396 | break ; |
| 397 | |
| 398 | default : |
| 399 | break ; |
| 400 | } |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | delete[] array ; |
| 405 | return transferred ; |
| 406 | } |