dlls/riched20/clipboard.c

   1 /*
   2  * Richedit clipboard handling
   3  *
   4  * Copyright (C) 2006 Kevin Koltzau
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "editor.h"
  22
  23 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
  24
  25 static UINT cfRTF = 0;
  26
  27 typedef struct DataObjectImpl {
  28     const IDataObjectVtbl *lpVtbl;
  29     LONG ref;
  30
  31     FORMATETC *fmtetc;
  32     UINT fmtetc_cnt;
  33
  34     HANDLE unicode;
  35     HANDLE rtf;
  36 } DataObjectImpl;
  37
  38 typedef struct EnumFormatImpl {
  39     const IEnumFORMATETCVtbl *lpVtbl;
  40     LONG ref;
  41
  42     FORMATETC *fmtetc;
  43     UINT fmtetc_cnt;
  44
  45     UINT cur;
  46 } EnumFormatImpl;
  47
  48 static HRESULT EnumFormatImpl_Create(const FORMATETC *fmtetc, UINT size, LPENUMFORMATETC *lplpformatetc);
  49
  50 static HRESULT WINAPI EnumFormatImpl_QueryInterface(IEnumFORMATETC *iface, REFIID riid, LPVOID *ppvObj)
  51 {
  52     EnumFormatImpl *This = (EnumFormatImpl*)iface;
  53     TRACE("%p %s\n", This, debugstr_guid(riid));
  54
  55     if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IEnumFORMATETC)) {
  56         IEnumFORMATETC_AddRef(iface);
  57         *ppvObj = This;
  58         return S_OK;
  59     }
  60     *ppvObj = NULL;
  61     return E_NOINTERFACE;
  62 }
  63
  64 static ULONG WINAPI EnumFormatImpl_AddRef(IEnumFORMATETC *iface)
  65 {
  66     EnumFormatImpl *This = (EnumFormatImpl*)iface;
  67     LONG ref = InterlockedIncrement(&This->ref);
  68     TRACE("(%p) ref=%d\n", This, ref);
  69     return ref;
  70 }
  71
  72 static ULONG WINAPI EnumFormatImpl_Release(IEnumFORMATETC *iface)
  73 {
  74     EnumFormatImpl *This = (EnumFormatImpl*)iface;
  75     ULONG ref = InterlockedDecrement(&This->ref);
  76     TRACE("(%p) ref=%d\n", This, ref);
  77
  78     if(!ref) {
  79         GlobalFree(This->fmtetc);
  80         heap_free(This);
  81     }
  82
  83     return ref;
  84 }
  85
  86 static HRESULT WINAPI EnumFormatImpl_Next(IEnumFORMATETC *iface, ULONG celt,
  87                                           FORMATETC *rgelt, ULONG *pceltFetched)
  88 {
  89     EnumFormatImpl *This = (EnumFormatImpl*)iface;
  90     ULONG count = 0;
  91     TRACE("(%p)->(%d %p %p)\n", This, celt, rgelt, pceltFetched);
  92
  93     if(!rgelt)
  94         return E_INVALIDARG;
  95
  96     count = min(celt, This->fmtetc_cnt-This->cur);
  97     if(count > 0) {
  98         memcpy(rgelt, This->fmtetc+This->cur, count*sizeof(FORMATETC));
  99         This->cur += count;
 100     }
 101     if(pceltFetched)
 102         *pceltFetched = count;
 103     return count == celt ? S_OK : S_FALSE;
 104 }
 105
 106 static HRESULT WINAPI EnumFormatImpl_Skip(IEnumFORMATETC *iface, ULONG celt)
 107 {
 108     EnumFormatImpl *This = (EnumFormatImpl*)iface;
 109     ULONG count = 0;
 110     TRACE("(%p)->(%d)\n", This, celt);
 111
 112     count = min(celt, This->fmtetc_cnt-This->cur);
 113     This->cur += count;
 114     return count == celt ? S_OK : S_FALSE;
 115 }
 116
 117 static HRESULT WINAPI EnumFormatImpl_Reset(IEnumFORMATETC *iface)
 118 {
 119     EnumFormatImpl *This = (EnumFormatImpl*)iface;
 120     TRACE("(%p)\n", This);
 121
 122     This->cur = 0;
 123     return S_OK;
 124 }
 125
 126 static HRESULT WINAPI EnumFormatImpl_Clone(IEnumFORMATETC *iface, IEnumFORMATETC **ppenum)
 127 {
 128     EnumFormatImpl *This = (EnumFormatImpl*)iface;
 129     HRESULT hr;
 130     TRACE("(%p)->(%p)\n", This, ppenum);
 131
 132     if(!ppenum)
 133         return E_INVALIDARG;
 134     hr = EnumFormatImpl_Create(This->fmtetc, This->fmtetc_cnt, ppenum);
 135     if(SUCCEEDED(hr))
 136         hr = IEnumFORMATETC_Skip(*ppenum, This->cur);
 137     return hr;
 138 }
 139
 140 static const IEnumFORMATETCVtbl VT_EnumFormatImpl = {
 141     EnumFormatImpl_QueryInterface,
 142     EnumFormatImpl_AddRef,
 143     EnumFormatImpl_Release,
 144     EnumFormatImpl_Next,
 145     EnumFormatImpl_Skip,
 146     EnumFormatImpl_Reset,
 147     EnumFormatImpl_Clone
 148 };
 149
 150 static HRESULT EnumFormatImpl_Create(const FORMATETC *fmtetc, UINT fmtetc_cnt, IEnumFORMATETC **lplpformatetc)
 151 {
 152     EnumFormatImpl *ret;
 153     TRACE("\n");
 154
 155     ret = heap_alloc(sizeof(EnumFormatImpl));
 156     ret->lpVtbl = &VT_EnumFormatImpl;
 157     ret->ref = 1;
 158     ret->cur = 0;
 159     ret->fmtetc_cnt = fmtetc_cnt;
 160     ret->fmtetc = GlobalAlloc(GMEM_ZEROINIT, fmtetc_cnt*sizeof(FORMATETC));
 161     memcpy(ret->fmtetc, fmtetc, fmtetc_cnt*sizeof(FORMATETC));
 162     *lplpformatetc = (LPENUMFORMATETC)ret;
 163     return S_OK;
 164 }
 165
 166 static HRESULT WINAPI DataObjectImpl_QueryInterface(IDataObject *iface, REFIID riid, LPVOID *ppvObj)
 167 {
 168     DataObjectImpl *This = (DataObjectImpl*)iface;
 169     TRACE("(%p)->(%s)\n", This, debugstr_guid(riid));
 170
 171     if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IDataObject)) {
 172         IDataObject_AddRef(iface);
 173         *ppvObj = This;
 174         return S_OK;
 175     }
 176     *ppvObj = NULL;
 177     return E_NOINTERFACE;
 178 }
 179
 180 static ULONG WINAPI DataObjectImpl_AddRef(IDataObject* iface)
 181 {
 182     DataObjectImpl *This = (DataObjectImpl*)iface;
 183     ULONG ref = InterlockedIncrement(&This->ref);
 184     TRACE("(%p) ref=%d\n", This, ref);
 185     return ref;
 186 }
 187
 188 static ULONG WINAPI DataObjectImpl_Release(IDataObject* iface)
 189 {
 190     DataObjectImpl *This = (DataObjectImpl*)iface;
 191     ULONG ref = InterlockedDecrement(&This->ref);
 192     TRACE("(%p) ref=%d\n",This, ref);
 193
 194     if(!ref) {
 195         if(This->unicode) GlobalFree(This->unicode);
 196         if(This->rtf) GlobalFree(This->rtf);
 197         if(This->fmtetc) GlobalFree(This->fmtetc);
 198         heap_free(This);
 199     }
 200
 201     return ref;
 202 }
 203
 204 static HRESULT WINAPI DataObjectImpl_GetData(IDataObject* iface, FORMATETC *pformatetc, STGMEDIUM *pmedium)
 205 {
 206     DataObjectImpl *This = (DataObjectImpl*)iface;
 207     TRACE("(%p)->(fmt=0x%08x tym=0x%08x)\n", This, pformatetc->cfFormat, pformatetc->tymed);
 208
 209     if(pformatetc->lindex != -1)
 210         return DV_E_LINDEX;
 211
 212     if(!(pformatetc->tymed & TYMED_HGLOBAL))
 213         return DV_E_TYMED;
 214
 215     if(This->unicode && pformatetc->cfFormat == CF_UNICODETEXT)
 216         pmedium->u.hGlobal = This->unicode;
 217     else if(This->rtf && pformatetc->cfFormat == cfRTF)
 218         pmedium->u.hGlobal = This->rtf;
 219     else
 220         return DV_E_FORMATETC;
 221
 222     pmedium->tymed = TYMED_HGLOBAL;
 223     pmedium->pUnkForRelease = (LPUNKNOWN)iface;
 224     IUnknown_AddRef(pmedium->pUnkForRelease);
 225     return S_OK;
 226 }
 227
 228 static HRESULT WINAPI DataObjectImpl_GetDataHere(IDataObject* iface, FORMATETC *pformatetc, STGMEDIUM *pmedium)
 229 {
 230     DataObjectImpl *This = (DataObjectImpl*)iface;
 231     FIXME("(%p): stub\n", This);
 232     return E_NOTIMPL;
 233 }
 234
 235 static HRESULT WINAPI DataObjectImpl_QueryGetData(IDataObject* iface, FORMATETC *pformatetc)
 236 {
 237     DataObjectImpl *This = (DataObjectImpl*)iface;
 238     UINT i;
 239     BOOL foundFormat = FALSE;
 240     TRACE("(%p)->(fmt=0x%08x tym=0x%08x)\n", This, pformatetc->cfFormat, pformatetc->tymed);
 241
 242     if(pformatetc->lindex != -1)
 243         return DV_E_LINDEX;
 244
 245     for(i=0; i<This->fmtetc_cnt; i++) {
 246         if(This->fmtetc[i].cfFormat == pformatetc->cfFormat) {
 247             foundFormat = TRUE;
 248             if(This->fmtetc[i].tymed == pformatetc->tymed)
 249                 return S_OK;
 250         }
 251     }
 252     return foundFormat?DV_E_FORMATETC:DV_E_TYMED;
 253 }
 254
 255 static HRESULT WINAPI DataObjectImpl_GetCanonicalFormatEtc(IDataObject* iface, FORMATETC *pformatetcIn,
 256                                                            FORMATETC *pformatetcOut)
 257 {
 258     DataObjectImpl *This = (DataObjectImpl*)iface;
 259     TRACE("(%p)->(%p,%p)\n", This, pformatetcIn, pformatetcOut);
 260
 261     if(pformatetcOut) {
 262         *pformatetcOut = *pformatetcIn;
 263         pformatetcOut->ptd = NULL;
 264     }
 265     return DATA_S_SAMEFORMATETC;
 266 }
 267
 268 static HRESULT WINAPI DataObjectImpl_SetData(IDataObject* iface, FORMATETC *pformatetc,
 269                                              STGMEDIUM *pmedium, BOOL fRelease)
 270 {
 271     DataObjectImpl *This = (DataObjectImpl*)iface;
 272     FIXME("(%p): stub\n", This);
 273     return E_NOTIMPL;
 274 }
 275
 276 static HRESULT WINAPI DataObjectImpl_EnumFormatEtc(IDataObject* iface, DWORD dwDirection,
 277                                                    IEnumFORMATETC **ppenumFormatEtc)
 278 {
 279     DataObjectImpl *This = (DataObjectImpl*)iface;
 280     TRACE("(%p)->(%d)\n", This, dwDirection);
 281
 282     if(dwDirection != DATADIR_GET) {
 283         FIXME("Unsupported direction: %d\n", dwDirection);
 284         /* WinXP riched20 also returns E_NOTIMPL in this case */
 285         *ppenumFormatEtc = NULL;
 286         return E_NOTIMPL;
 287     }
 288     return EnumFormatImpl_Create(This->fmtetc, This->fmtetc_cnt, ppenumFormatEtc);
 289 }
 290
 291 static HRESULT WINAPI DataObjectImpl_DAdvise(IDataObject* iface, FORMATETC *pformatetc, DWORD advf,
 292                                              IAdviseSink *pAdvSink, DWORD *pdwConnection)
 293 {
 294     DataObjectImpl *This = (DataObjectImpl*)iface;
 295     FIXME("(%p): stub\n", This);
 296     return E_NOTIMPL;
 297 }
 298
 299 static HRESULT WINAPI DataObjectImpl_DUnadvise(IDataObject* iface, DWORD dwConnection)
 300 {
 301     DataObjectImpl *This = (DataObjectImpl*)iface;
 302     FIXME("(%p): stub\n", This);
 303     return E_NOTIMPL;
 304 }
 305
 306 static HRESULT WINAPI DataObjectImpl_EnumDAdvise(IDataObject* iface, IEnumSTATDATA **ppenumAdvise)
 307 {
 308     DataObjectImpl *This = (DataObjectImpl*)iface;
 309     FIXME("(%p): stub\n", This);
 310     return E_NOTIMPL;
 311 }
 312
 313 static const IDataObjectVtbl VT_DataObjectImpl =
 314 {
 315     DataObjectImpl_QueryInterface,
 316     DataObjectImpl_AddRef,
 317     DataObjectImpl_Release,
 318     DataObjectImpl_GetData,
 319     DataObjectImpl_GetDataHere,
 320     DataObjectImpl_QueryGetData,
 321     DataObjectImpl_GetCanonicalFormatEtc,
 322     DataObjectImpl_SetData,
 323     DataObjectImpl_EnumFormatEtc,
 324     DataObjectImpl_DAdvise,
 325     DataObjectImpl_DUnadvise,
 326     DataObjectImpl_EnumDAdvise
 327 };
 328
 329 static HGLOBAL get_unicode_text(ME_TextEditor *editor, const ME_Cursor *start, int nChars)
 330 {
 331     int pars = 0;
 332     WCHAR *data;
 333     HANDLE ret;
 334     ME_DisplayItem *para;
 335     int nEnd = ME_GetCursorOfs(start) + nChars;
 336
 337     /* count paragraphs in range */
 338     para = start->pPara;
 339     while((para = para->member.para.next_para) &&
 340           para->member.para.nCharOfs <= nEnd)
 341         pars++;
 342
 343     ret = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR) * (nChars + pars + 1));
 344     data = GlobalLock(ret);
 345     ME_GetTextW(editor, data, nChars + pars, start, nChars, TRUE);
 346     GlobalUnlock(ret);
 347     return ret;
 348 }
 349
 350 typedef struct tagME_GlobalDestStruct
 351 {
 352   HGLOBAL hData;
 353   int nLength;
 354 } ME_GlobalDestStruct;
 355
 356 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 357 {
 358     ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 359     int nMaxSize;
 360     BYTE *pDest;
 361
 362     nMaxSize = GlobalSize(pData->hData);
 363     if (pData->nLength+cb+1 >= cb) {
 364         /* round up to 2^17 */
 365         int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 366         pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 367     }
 368     pDest = GlobalLock(pData->hData);
 369     memcpy(pDest + pData->nLength, lpBuff, cb);
 370     pData->nLength += cb;
 371     pDest[pData->nLength] = '\0';
 372     GlobalUnlock(pData->hData);
 373     *pcb = cb;
 374
 375     return 0;
 376 }
 377
 378 static HGLOBAL get_rtf_text(ME_TextEditor *editor, const ME_Cursor *start, int nChars)
 379 {
 380     EDITSTREAM es;
 381     ME_GlobalDestStruct gds;
 382
 383     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
 384     gds.nLength = 0;
 385     es.dwCookie = (DWORD_PTR)&gds;
 386     es.pfnCallback = ME_AppendToHGLOBAL;
 387     ME_StreamOutRange(editor, SF_RTF, start, nChars, &es);
 388     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
 389     return gds.hData;
 390 }
 391
 392 HRESULT ME_GetDataObject(ME_TextEditor *editor, const ME_Cursor *start,
 393                          int nChars, LPDATAOBJECT *lplpdataobj)
 394 {
 395     DataObjectImpl *obj;
 396     TRACE("(%p,%d,%d)\n", editor, ME_GetCursorOfs(start), nChars);
 397
 398     obj = heap_alloc(sizeof(DataObjectImpl));
 399     if(cfRTF == 0)
 400         cfRTF = RegisterClipboardFormatA("Rich Text Format");
 401
 402     obj->lpVtbl = &VT_DataObjectImpl;
 403     obj->ref = 1;
 404     obj->unicode = get_unicode_text(editor, start, nChars);
 405     obj->rtf = NULL;
 406
 407     obj->fmtetc_cnt = 1;
 408     if(editor->mode & TM_RICHTEXT)
 409         obj->fmtetc_cnt++;
 410     obj->fmtetc = GlobalAlloc(GMEM_ZEROINIT, obj->fmtetc_cnt*sizeof(FORMATETC));
 411     InitFormatEtc(obj->fmtetc[0], CF_UNICODETEXT, TYMED_HGLOBAL);
 412     if(editor->mode & TM_RICHTEXT) {
 413         obj->rtf = get_rtf_text(editor, start, nChars);
 414         InitFormatEtc(obj->fmtetc[1], cfRTF, TYMED_HGLOBAL);
 415     }
 416
 417     *lplpdataobj = (LPDATAOBJECT)obj;
 418     return S_OK;
 419 }