| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dnd.cpp |
| 3 | // Purpose: wxDropTarget, wxDropSource, wxDataObject implementation |
| 4 | // Author: AUTHOR |
| 5 | // Modified by: |
| 6 | // Created: ??/??/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 1998 AUTHOR |
| 9 | // Licence: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "dnd.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/defs.h" |
| 17 | |
| 18 | #if wxUSE_DRAG_AND_DROP |
| 19 | |
| 20 | #include "wx/dnd.h" |
| 21 | #include "wx/window.h" |
| 22 | #include "wx/toplevel.h" |
| 23 | #include "wx/app.h" |
| 24 | #include "wx/gdicmn.h" |
| 25 | #include "wx/mac/private.h" |
| 26 | |
| 27 | // ---------------------------------------------------------------------------- |
| 28 | // global |
| 29 | // ---------------------------------------------------------------------------- |
| 30 | |
| 31 | void wxMacEnsureTrackingHandlersInstalled() ; |
| 32 | |
| 33 | typedef struct |
| 34 | { |
| 35 | wxWindow* m_currentTargetWindow ; |
| 36 | wxDropTarget* m_currentTarget ; |
| 37 | wxDropSource* m_currentSource ; |
| 38 | } MacTrackingGlobals ; |
| 39 | |
| 40 | MacTrackingGlobals gTrackingGlobals ; |
| 41 | |
| 42 | //---------------------------------------------------------------------------- |
| 43 | // wxDropTarget |
| 44 | //---------------------------------------------------------------------------- |
| 45 | |
| 46 | wxDropTarget::wxDropTarget( wxDataObject *data ) |
| 47 | : wxDropTargetBase( data ) |
| 48 | { |
| 49 | wxMacEnsureTrackingHandlersInstalled() ; |
| 50 | } |
| 51 | |
| 52 | wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x), |
| 53 | wxCoord WXUNUSED(y), |
| 54 | wxDragResult def ) |
| 55 | { |
| 56 | |
| 57 | return CurrentDragHasSupportedFormat() ? def : wxDragNone; |
| 58 | } |
| 59 | |
| 60 | bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) ) |
| 61 | { |
| 62 | if (!m_dataObject) |
| 63 | return FALSE; |
| 64 | |
| 65 | return CurrentDragHasSupportedFormat() ; |
| 66 | } |
| 67 | |
| 68 | wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), |
| 69 | wxDragResult def ) |
| 70 | { |
| 71 | if (!m_dataObject) |
| 72 | return wxDragNone; |
| 73 | |
| 74 | if (!CurrentDragHasSupportedFormat()) |
| 75 | return wxDragNone; |
| 76 | |
| 77 | return GetData() ? def : wxDragNone; |
| 78 | } |
| 79 | |
| 80 | bool wxDropTarget::CurrentDragHasSupportedFormat() |
| 81 | { |
| 82 | bool supported = false ; |
| 83 | if ( gTrackingGlobals.m_currentSource != NULL ) |
| 84 | { |
| 85 | wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ; |
| 86 | |
| 87 | if ( data ) |
| 88 | { |
| 89 | int formatcount = data->GetFormatCount() ; |
| 90 | wxDataFormat *array = new wxDataFormat[ formatcount ]; |
| 91 | data->GetAllFormats( array ); |
| 92 | for (size_t i = 0; !supported && i < formatcount ; i++) |
| 93 | { |
| 94 | wxDataFormat format = array[i] ; |
| 95 | if ( m_dataObject->IsSupported( format ) ) |
| 96 | { |
| 97 | supported = true ; |
| 98 | break ; |
| 99 | } |
| 100 | } |
| 101 | delete[] array ; |
| 102 | } |
| 103 | } |
| 104 | if ( !supported ) |
| 105 | { |
| 106 | UInt16 items ; |
| 107 | OSErr result; |
| 108 | CountDragItems((DragReference)m_currentDrag, &items); |
| 109 | for (UInt16 index = 1; index <= items && supported == false ; ++index) |
| 110 | { |
| 111 | ItemReference theItem; |
| 112 | FlavorType theType ; |
| 113 | UInt16 flavors = 0 ; |
| 114 | GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem); |
| 115 | CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ; |
| 116 | for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor ) |
| 117 | { |
| 118 | result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType); |
| 119 | if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) ) |
| 120 | { |
| 121 | supported = true ; |
| 122 | break ; |
| 123 | } |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | return supported ; |
| 128 | } |
| 129 | |
| 130 | bool wxDropTarget::GetData() |
| 131 | { |
| 132 | if (!m_dataObject) |
| 133 | return FALSE; |
| 134 | |
| 135 | if ( !CurrentDragHasSupportedFormat() ) |
| 136 | return FALSE ; |
| 137 | |
| 138 | bool transferred = false ; |
| 139 | if ( gTrackingGlobals.m_currentSource != NULL ) |
| 140 | { |
| 141 | wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ; |
| 142 | |
| 143 | if ( data ) |
| 144 | { |
| 145 | int formatcount = data->GetFormatCount() ; |
| 146 | wxDataFormat *array = new wxDataFormat[ formatcount ]; |
| 147 | data->GetAllFormats( array ); |
| 148 | for (size_t i = 0; !transferred && i < formatcount ; i++) |
| 149 | { |
| 150 | wxDataFormat format = array[i] ; |
| 151 | if ( m_dataObject->IsSupported( format ) ) |
| 152 | { |
| 153 | int size = data->GetDataSize( format ); |
| 154 | transferred = true ; |
| 155 | |
| 156 | if (size == 0) |
| 157 | { |
| 158 | m_dataObject->SetData(format , 0 , 0 ) ; |
| 159 | } |
| 160 | else |
| 161 | { |
| 162 | char *d = new char[size]; |
| 163 | data->GetDataHere( format , (void*) d ); |
| 164 | m_dataObject->SetData( format , size , d ) ; |
| 165 | delete[] d ; |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | delete[] array ; |
| 170 | } |
| 171 | } |
| 172 | if ( !transferred ) |
| 173 | { |
| 174 | UInt16 items ; |
| 175 | OSErr result; |
| 176 | CountDragItems((DragReference)m_currentDrag, &items); |
| 177 | for (UInt16 index = 1; index <= items; ++index) |
| 178 | { |
| 179 | ItemReference theItem; |
| 180 | FlavorType theType ; |
| 181 | UInt16 flavors = 0 ; |
| 182 | GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem); |
| 183 | CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ; |
| 184 | for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor ) |
| 185 | { |
| 186 | result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType); |
| 187 | wxDataFormat format(theType) ; |
| 188 | if ( m_dataObject->IsSupportedFormat( format ) ) |
| 189 | { |
| 190 | FlavorFlags theFlags; |
| 191 | result = GetFlavorFlags((DragReference)m_currentDrag, theItem, theType, &theFlags); |
| 192 | if (result == noErr) |
| 193 | { |
| 194 | Size dataSize ; |
| 195 | Ptr theData ; |
| 196 | GetFlavorDataSize((DragReference)m_currentDrag, theItem, theType, &dataSize); |
| 197 | if ( theType == 'TEXT' ) |
| 198 | dataSize++ ; |
| 199 | theData = new char[dataSize]; |
| 200 | GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L); |
| 201 | if( theType == 'TEXT' ) |
| 202 | { |
| 203 | theData[dataSize]=0 ; |
| 204 | if ( wxApp::s_macDefaultEncodingIsPC ) |
| 205 | { |
| 206 | wxMacConvertToPC((char*)theData) ; |
| 207 | } |
| 208 | m_dataObject->SetData( format, dataSize, theData ); |
| 209 | } |
| 210 | else if ( theType == kDragFlavorTypeHFS ) |
| 211 | { |
| 212 | HFSFlavor* theFile = (HFSFlavor*) theData ; |
| 213 | wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ; |
| 214 | m_dataObject->SetData( format , name.Length() + 1, name ) ; |
| 215 | } |
| 216 | else |
| 217 | { |
| 218 | m_dataObject->SetData( format, dataSize, theData ); |
| 219 | } |
| 220 | delete[] theData; |
| 221 | } |
| 222 | break ; |
| 223 | } |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | return TRUE ; |
| 228 | } |
| 229 | |
| 230 | //------------------------------------------------------------------------- |
| 231 | // wxDropSource |
| 232 | //------------------------------------------------------------------------- |
| 233 | |
| 234 | //----------------------------------------------------------------------------- |
| 235 | // drag request |
| 236 | |
| 237 | wxDropSource::wxDropSource(wxWindow *win, |
| 238 | const wxIcon &iconCopy, |
| 239 | const wxIcon &iconMove, |
| 240 | const wxIcon &iconNone) |
| 241 | { |
| 242 | wxMacEnsureTrackingHandlersInstalled() ; |
| 243 | m_window = win; |
| 244 | } |
| 245 | |
| 246 | wxDropSource::wxDropSource(wxDataObject& data, |
| 247 | wxWindow *win, |
| 248 | const wxIcon &iconCopy, |
| 249 | const wxIcon &iconMove, |
| 250 | const wxIcon &iconNone) |
| 251 | { |
| 252 | wxMacEnsureTrackingHandlersInstalled() ; |
| 253 | SetData( data ); |
| 254 | m_window = win; |
| 255 | } |
| 256 | |
| 257 | wxDropSource::~wxDropSource() |
| 258 | { |
| 259 | } |
| 260 | |
| 261 | |
| 262 | wxDragResult wxDropSource::DoDragDrop( bool allowMove ) |
| 263 | { |
| 264 | wxASSERT_MSG( m_data, wxT("Drop source: no data") ); |
| 265 | |
| 266 | if (!m_data) |
| 267 | return (wxDragResult) wxDragNone; |
| 268 | |
| 269 | if (m_data->GetFormatCount() == 0) |
| 270 | return (wxDragResult) wxDragNone; |
| 271 | |
| 272 | OSErr result; |
| 273 | DragReference theDrag; |
| 274 | RgnHandle dragRegion; |
| 275 | if (result = NewDrag(&theDrag)) |
| 276 | { |
| 277 | return wxDragNone ; |
| 278 | } |
| 279 | // add data to drag |
| 280 | size_t formatCount = m_data->GetFormatCount() ; |
| 281 | wxDataFormat *formats = new wxDataFormat[formatCount] ; |
| 282 | m_data->GetAllFormats( formats ) ; |
| 283 | ItemReference theItem = 1 ; |
| 284 | for ( int i = 0 ; i < formatCount ; ++i ) |
| 285 | { |
| 286 | size_t dataSize = m_data->GetDataSize( formats[i] ) ; |
| 287 | Ptr dataPtr = new char[dataSize] ; |
| 288 | m_data->GetDataHere( formats[i] , dataPtr ) ; |
| 289 | OSType type = formats[i].GetFormatId() ; |
| 290 | if ( type == 'TEXT' ) |
| 291 | { |
| 292 | dataSize-- ; |
| 293 | if ( wxApp::s_macDefaultEncodingIsPC ) |
| 294 | { |
| 295 | wxMacConvertFromPC((char*)dataPtr) ; |
| 296 | } |
| 297 | AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0); |
| 298 | } |
| 299 | else if (type == kDragFlavorTypeHFS ) |
| 300 | { |
| 301 | HFSFlavor theFlavor ; |
| 302 | OSErr err = noErr; |
| 303 | CInfoPBRec cat; |
| 304 | |
| 305 | wxMacFilename2FSSpec( dataPtr , &theFlavor.fileSpec ) ; |
| 306 | |
| 307 | cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name; |
| 308 | cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum; |
| 309 | cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID; |
| 310 | cat.hFileInfo.ioFDirIndex = 0; |
| 311 | err = PBGetCatInfoSync(&cat); |
| 312 | if (err == noErr ) |
| 313 | { |
| 314 | theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags; |
| 315 | if (theFlavor.fileSpec.parID == fsRtParID) { |
| 316 | theFlavor.fileCreator = 'MACS'; |
| 317 | theFlavor.fileType = 'disk'; |
| 318 | } else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0) { |
| 319 | theFlavor.fileCreator = 'MACS'; |
| 320 | theFlavor.fileType = 'fold'; |
| 321 | } else { |
| 322 | theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator; |
| 323 | theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType; |
| 324 | } |
| 325 | AddDragItemFlavor(theDrag, theItem, type , &theFlavor, sizeof(theFlavor), 0); |
| 326 | } |
| 327 | } |
| 328 | else |
| 329 | { |
| 330 | AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0); |
| 331 | } |
| 332 | delete[] dataPtr ; |
| 333 | } |
| 334 | delete[] formats ; |
| 335 | |
| 336 | dragRegion = NewRgn(); |
| 337 | RgnHandle tempRgn = NewRgn() ; |
| 338 | |
| 339 | EventRecord* ev = (EventRecord*) wxTheApp->MacGetCurrentEvent() ; |
| 340 | const short dragRegionOuterBoundary = 10 ; |
| 341 | const short dragRegionInnerBoundary = 9 ; |
| 342 | |
| 343 | SetRectRgn( dragRegion , ev->where.h - dragRegionOuterBoundary , |
| 344 | ev->where.v - dragRegionOuterBoundary , |
| 345 | ev->where.h + dragRegionOuterBoundary , |
| 346 | ev->where.v + dragRegionOuterBoundary ) ; |
| 347 | |
| 348 | SetRectRgn( tempRgn , ev->where.h - dragRegionInnerBoundary , |
| 349 | ev->where.v - dragRegionInnerBoundary , |
| 350 | ev->where.h + dragRegionInnerBoundary , |
| 351 | ev->where.v + dragRegionInnerBoundary ) ; |
| 352 | |
| 353 | DiffRgn( dragRegion , tempRgn , dragRegion ) ; |
| 354 | DisposeRgn( tempRgn ) ; |
| 355 | |
| 356 | // TODO:work with promises in order to return data only when drag |
| 357 | // was successfully completed |
| 358 | |
| 359 | gTrackingGlobals.m_currentSource = this ; |
| 360 | result = TrackDrag(theDrag, ev , dragRegion); |
| 361 | DisposeRgn(dragRegion); |
| 362 | DisposeDrag(theDrag); |
| 363 | gTrackingGlobals.m_currentSource = NULL ; |
| 364 | |
| 365 | return wxDragCopy ; |
| 366 | } |
| 367 | |
| 368 | bool gTrackingGlobalsInstalled = false ; |
| 369 | |
| 370 | // passing the globals via refcon is not needed by the CFM and later architectures anymore |
| 371 | // but I'll leave it in there, just in case... |
| 372 | |
| 373 | pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow, |
| 374 | void *handlerRefCon, DragReference theDrag) ; |
| 375 | pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon, |
| 376 | DragReference theDrag) ; |
| 377 | |
| 378 | void wxMacEnsureTrackingHandlersInstalled() |
| 379 | { |
| 380 | if( !gTrackingGlobalsInstalled ) |
| 381 | { |
| 382 | OSErr result; |
| 383 | |
| 384 | result = InstallTrackingHandler(NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L,&gTrackingGlobals); |
| 385 | wxASSERT( result == noErr ) ; |
| 386 | result = InstallReceiveHandler(NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals); |
| 387 | wxASSERT( result == noErr ) ; |
| 388 | |
| 389 | gTrackingGlobalsInstalled = true ; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow, |
| 394 | void *handlerRefCon, DragReference theDrag) |
| 395 | { |
| 396 | MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon; |
| 397 | Point mouse, localMouse; |
| 398 | DragAttributes attributes; |
| 399 | RgnHandle hiliteRgn; |
| 400 | GetDragAttributes(theDrag, &attributes); |
| 401 | wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow ) ; |
| 402 | switch(theMessage) |
| 403 | { |
| 404 | case kDragTrackingEnterHandler: |
| 405 | break; |
| 406 | case kDragTrackingLeaveHandler: |
| 407 | break; |
| 408 | case kDragTrackingEnterWindow: |
| 409 | trackingGlobals->m_currentTargetWindow = NULL ; |
| 410 | trackingGlobals->m_currentTarget = NULL ; |
| 411 | break; |
| 412 | case kDragTrackingInWindow: |
| 413 | if (toplevel == NULL) |
| 414 | break; |
| 415 | |
| 416 | GetDragMouse(theDrag, &mouse, 0L); |
| 417 | localMouse = mouse; |
| 418 | GlobalToLocal(&localMouse); |
| 419 | |
| 420 | // if (attributes & kDragHasLeftSenderWindow) |
| 421 | { |
| 422 | wxPoint point(localMouse.h , localMouse.v) ; |
| 423 | wxWindow *win = NULL ; |
| 424 | toplevel->MacGetWindowFromPointSub( point , &win ) ; |
| 425 | int localx , localy ; |
| 426 | localx = localMouse.h ; |
| 427 | localy = localMouse.v ; |
| 428 | //TODO : should we use client coordinates |
| 429 | if ( win ) |
| 430 | win->MacRootWindowToWindow( &localx , &localy ) ; |
| 431 | if ( win != trackingGlobals->m_currentTargetWindow ) |
| 432 | { |
| 433 | if ( trackingGlobals->m_currentTargetWindow ) |
| 434 | { |
| 435 | // this window is left |
| 436 | if ( trackingGlobals->m_currentTarget ) |
| 437 | { |
| 438 | HideDragHilite(theDrag); |
| 439 | trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ; |
| 440 | trackingGlobals->m_currentTarget->OnLeave() ; |
| 441 | trackingGlobals->m_currentTarget = NULL; |
| 442 | trackingGlobals->m_currentTargetWindow = NULL ; |
| 443 | } |
| 444 | } |
| 445 | if ( win ) |
| 446 | { |
| 447 | // this window is entered |
| 448 | trackingGlobals->m_currentTargetWindow = win ; |
| 449 | trackingGlobals->m_currentTarget = win->GetDropTarget() ; |
| 450 | if ( trackingGlobals->m_currentTarget ) |
| 451 | { |
| 452 | trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ; |
| 453 | if ( trackingGlobals->m_currentTarget->OnEnter( |
| 454 | localx , localy , wxDragCopy ) != wxDragNone ) |
| 455 | { |
| 456 | int x , y ; |
| 457 | x = y = 0 ; |
| 458 | win->MacWindowToRootWindow( &x , &y ) ; |
| 459 | RgnHandle hiliteRgn = NewRgn() ; |
| 460 | SetRectRgn( hiliteRgn , x , y , x+win->GetSize().x ,y+win->GetSize().y) ; |
| 461 | ShowDragHilite(theDrag, hiliteRgn, true); |
| 462 | DisposeRgn( hiliteRgn ) ; |
| 463 | } |
| 464 | } |
| 465 | } |
| 466 | } |
| 467 | else |
| 468 | { |
| 469 | if( trackingGlobals->m_currentTarget ) |
| 470 | { |
| 471 | trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ; |
| 472 | trackingGlobals->m_currentTarget->OnDragOver( |
| 473 | localx , localy , wxDragCopy ) ; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | } |
| 478 | // MyTrackItemUnderMouse(localMouse, theWindow); |
| 479 | break; |
| 480 | case kDragTrackingLeaveWindow: |
| 481 | if (trackingGlobals->m_currentTarget) |
| 482 | { |
| 483 | trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ; |
| 484 | trackingGlobals->m_currentTarget->OnLeave() ; |
| 485 | HideDragHilite(theDrag); |
| 486 | trackingGlobals->m_currentTarget = NULL ; |
| 487 | } |
| 488 | trackingGlobals->m_currentTargetWindow = NULL ; |
| 489 | break; |
| 490 | } |
| 491 | return(noErr); |
| 492 | } |
| 493 | |
| 494 | pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon, |
| 495 | DragReference theDrag) |
| 496 | { |
| 497 | MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon; |
| 498 | if ( trackingGlobals->m_currentTarget ) |
| 499 | { |
| 500 | Point mouse,localMouse ; |
| 501 | int localx,localy ; |
| 502 | |
| 503 | trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ; |
| 504 | GetDragMouse(theDrag, &mouse, 0L); |
| 505 | localMouse = mouse; |
| 506 | GlobalToLocal(&localMouse); |
| 507 | localx = localMouse.h ; |
| 508 | localy = localMouse.v ; |
| 509 | //TODO : should we use client coordinates |
| 510 | if ( trackingGlobals->m_currentTargetWindow ) |
| 511 | trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx , &localy ) ; |
| 512 | if ( trackingGlobals->m_currentTarget->OnDrop( localx , localy ) ) |
| 513 | { |
| 514 | trackingGlobals->m_currentTarget->OnData( localx , localy , wxDragCopy ) ; |
| 515 | } |
| 516 | } |
| 517 | return(noErr); |
| 518 | } |
| 519 | #endif |