dlls/ole32/ole2impl.c

   1 /*
   2  * Ole 2 Create functions implementation
   3  *
   4  * Copyright (C) 1999-2000 Abey George
   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 <stdarg.h>
  22 #include <string.h>
  23
  24 #define COBJMACROS
  25 #define NONAMELESSUNION
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winuser.h"
  31 #include "wine/debug.h"
  32 #include "ole2.h"
  33 #include "olestd.h"
  34 #include "compobj_private.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  37
  38 /******************************************************************************
  39  *              OleQueryCreateFromData [OLE32.@]
  40  *
  41  * Checks whether an object can become an embedded object.
  42  * the clipboard or OLE drag and drop.
  43  * Returns  : S_OK - Format that supports Embedded object creation are present.
  44  *            OLE_E_STATIC - Format that supports static object creation are present.
  45  *            S_FALSE - No acceptable format is available.
  46  */
  47
  48 HRESULT WINAPI OleQueryCreateFromData(IDataObject *data)
  49 {
  50     IEnumFORMATETC *enum_fmt;
  51     FORMATETC fmt;
  52     BOOL found_static = FALSE;
  53     HRESULT hr;
  54
  55     hr = IDataObject_EnumFormatEtc(data, DATADIR_GET, &enum_fmt);
  56
  57     if(FAILED(hr)) return hr;
  58
  59     do
  60     {
  61         hr = IEnumFORMATETC_Next(enum_fmt, 1, &fmt, NULL);
  62         if(hr == S_OK)
  63         {
  64             if(fmt.cfFormat == embedded_object_clipboard_format ||
  65                fmt.cfFormat == embed_source_clipboard_format ||
  66                fmt.cfFormat == filename_clipboard_format)
  67             {
  68                 IEnumFORMATETC_Release(enum_fmt);
  69                 return S_OK;
  70             }
  71
  72             if(fmt.cfFormat == CF_METAFILEPICT ||
  73                fmt.cfFormat == CF_BITMAP ||
  74                fmt.cfFormat == CF_DIB)
  75                 found_static = TRUE;
  76         }
  77     } while (hr == S_OK);
  78
  79     IEnumFORMATETC_Release(enum_fmt);
  80
  81     return found_static ? OLE_S_STATIC : S_FALSE;
  82 }
  83
  84 static inline void init_fmtetc(FORMATETC *fmt, CLIPFORMAT cf, TYMED tymed)
  85 {
  86     fmt->cfFormat = cf;
  87     fmt->ptd = NULL;
  88     fmt->dwAspect = DVASPECT_CONTENT;
  89     fmt->lindex = -1;
  90     fmt->tymed = tymed;
  91 }
  92
  93 /***************************************************************************
  94  *         get_storage
  95  *
  96  * Retrieve an object's storage from a variety of sources.
  97  *
  98  * FIXME: CF_FILENAME.
  99  */
 100 static HRESULT get_storage(IDataObject *data, IStorage *stg, UINT *src_cf, BOOL other_fmts)
 101 {
 102     static const UINT fmt_id[] = { CF_METAFILEPICT, CF_BITMAP, CF_DIB };
 103     UINT i;
 104     HRESULT hr;
 105     FORMATETC fmt;
 106     STGMEDIUM med;
 107     IPersistStorage *persist;
 108     CLSID clsid;
 109
 110     if (src_cf) *src_cf = 0;
 111
 112     /* CF_EMBEDEDOBJECT */
 113     init_fmtetc(&fmt, embedded_object_clipboard_format, TYMED_ISTORAGE);
 114     med.tymed = TYMED_ISTORAGE;
 115     med.u.pstg = stg;
 116     med.pUnkForRelease = NULL;
 117     hr = IDataObject_GetDataHere(data, &fmt, &med);
 118     if(SUCCEEDED(hr))
 119     {
 120         if (src_cf) *src_cf = embedded_object_clipboard_format;
 121         return hr;
 122     }
 123
 124     /* CF_EMBEDSOURCE */
 125     init_fmtetc(&fmt, embed_source_clipboard_format, TYMED_ISTORAGE);
 126     med.tymed = TYMED_ISTORAGE;
 127     med.u.pstg = stg;
 128     med.pUnkForRelease = NULL;
 129     hr = IDataObject_GetDataHere(data, &fmt, &med);
 130     if(SUCCEEDED(hr))
 131     {
 132         if (src_cf) *src_cf = embed_source_clipboard_format;
 133         return hr;
 134     }
 135
 136     if (other_fmts)
 137     {
 138         for (i = 0; i < sizeof(fmt_id)/sizeof(fmt_id[0]); i++)
 139         {
 140             init_fmtetc(&fmt, fmt_id[i], TYMED_ISTORAGE);
 141             hr = IDataObject_QueryGetData(data, &fmt);
 142             if (SUCCEEDED(hr))
 143             {
 144                 if (src_cf) *src_cf = fmt_id[i];
 145                 return hr;
 146             }
 147         }
 148     }
 149
 150     /* IPersistStorage */
 151     hr = IDataObject_QueryInterface(data, &IID_IPersistStorage, (void**)&persist);
 152     if(FAILED(hr)) return hr;
 153
 154     hr = IPersistStorage_GetClassID(persist, &clsid);
 155     if(FAILED(hr)) goto end;
 156
 157     hr = IStorage_SetClass(stg, &clsid);
 158     if(FAILED(hr)) goto end;
 159
 160     hr = IPersistStorage_Save(persist, stg, FALSE);
 161     if(FAILED(hr)) goto end;
 162
 163     hr = IPersistStorage_SaveCompleted(persist, NULL);
 164
 165 end:
 166     IPersistStorage_Release(persist);
 167
 168     return hr;
 169 }
 170
 171 /******************************************************************************
 172  *              OleCreateFromDataEx        [OLE32.@]
 173  *
 174  * Creates an embedded object from data transfer object retrieved from
 175  * the clipboard or OLE drag and drop.
 176  */
 177 HRESULT WINAPI OleCreateFromDataEx(IDataObject *data, REFIID iid, DWORD flags,
 178                                    DWORD renderopt, ULONG num_cache_fmts, DWORD *adv_flags, FORMATETC *cache_fmts,
 179                                    IAdviseSink *sink, DWORD *conns,
 180                                    IOleClientSite *client_site, IStorage *stg, void **obj)
 181 {
 182     HRESULT hr;
 183     UINT src_cf;
 184
 185     FIXME("(%p, %s, %08x, %08x, %d, %p, %p, %p, %p, %p, %p, %p): stub\n",
 186           data, debugstr_guid(iid), flags, renderopt, num_cache_fmts, adv_flags, cache_fmts,
 187           sink, conns, client_site, stg, obj);
 188
 189     hr = get_storage(data, stg, &src_cf, TRUE);
 190     if(FAILED(hr)) return hr;
 191
 192     hr = OleLoad(stg, iid, client_site, obj);
 193     if(FAILED(hr)) return hr;
 194
 195     /* FIXME: Init cache */
 196
 197     return hr;
 198 }
 199
 200 /******************************************************************************
 201  *              OleCreateFromData        [OLE32.@]
 202  */
 203 HRESULT WINAPI OleCreateFromData(LPDATAOBJECT data, REFIID iid,
 204                                  DWORD renderopt, LPFORMATETC fmt,
 205                                  LPOLECLIENTSITE client_site, LPSTORAGE stg,
 206                                  LPVOID* obj)
 207 {
 208     DWORD advf = ADVF_PRIMEFIRST;
 209
 210     return OleCreateFromDataEx(data, iid, 0, renderopt, fmt ? 1 : 0, fmt ? &advf : NULL,
 211                                fmt, NULL, NULL, client_site, stg, obj);
 212 }
 213
 214 /******************************************************************************
 215  *              OleCreateLinkFromData        [OLE32.@]
 216  */
 217 HRESULT WINAPI OleCreateLinkFromData(IDataObject *data, REFIID iid,
 218                                      DWORD renderopt, FORMATETC *fmt,
 219                                      IOleClientSite *client_site, IStorage *stg,
 220                                      void **obj)
 221 {
 222     FIXME("%p,%s,%08x,%p,%p,%p,%p: semi-stub\n",
 223           data, debugstr_guid(iid), renderopt, fmt, client_site, stg, obj);
 224     return OleCreateFromData(data, iid, renderopt, fmt, client_site, stg, obj);
 225 }
 226
 227 /******************************************************************************
 228  *              OleCreateStaticFromData        [OLE32.@]
 229  */
 230 HRESULT WINAPI OleCreateStaticFromData(IDataObject *data, REFIID iid,
 231                                        DWORD renderopt, FORMATETC *fmt,
 232                                        IOleClientSite *client_site, IStorage *stg,
 233                                        void **obj)
 234 {
 235     FIXME("%p,%s,%08x,%p,%p,%p,%p: semi-stub\n",
 236           data, debugstr_guid(iid), renderopt, fmt, client_site, stg, obj);
 237     return OleCreateFromData(data, iid, renderopt, fmt, client_site, stg, obj);
 238 }
 239
 240 /******************************************************************************
 241  *              OleCreateFromFileEx        [OLE32.@]
 242  */
 243 HRESULT WINAPI OleCreateFromFileEx(REFCLSID clsid, const OLECHAR *filename, REFIID iid, DWORD flags,
 244                                    DWORD renderopt, ULONG num_fmts, DWORD *adv_flags, FORMATETC *fmts, IAdviseSink *sink,
 245                                    DWORD *conns, IOleClientSite *client_site, IStorage *stg, void **obj)
 246 {
 247     HRESULT hr;
 248     IMoniker *mon;
 249     IDataObject *data;
 250     IUnknown *unk = NULL;
 251     IOleCache *cache = NULL;
 252     ULONG i;
 253
 254     TRACE("cls %s, %s, iid %s, flags %d, render opts %d, num fmts %d, adv flags %p, fmts %p\n", debugstr_guid(clsid),
 255           debugstr_w(filename), debugstr_guid(iid), flags, renderopt, num_fmts, adv_flags, fmts);
 256     TRACE("sink %p, conns %p, client site %p, storage %p, obj %p\n", sink, conns, client_site, stg, obj);
 257     for (i = 0; i < num_fmts; i++)
 258         TRACE("\t%d: fmt %s adv flags %d\n", i, debugstr_formatetc(fmts + i), adv_flags[i]);
 259
 260     hr = CreateFileMoniker( filename, &mon );
 261     if (FAILED(hr)) return hr;
 262
 263     hr = BindMoniker( mon, 0, &IID_IDataObject, (void**)&data );
 264     IMoniker_Release( mon );
 265     if (FAILED(hr)) return hr;
 266
 267     hr = get_storage( data, stg, NULL, FALSE );
 268     if (FAILED(hr)) goto end;
 269
 270     hr = OleLoad( stg, &IID_IUnknown, client_site, (void**)&unk );
 271     if (FAILED(hr)) goto end;
 272
 273     if (renderopt == OLERENDER_FORMAT)
 274     {
 275         hr = IUnknown_QueryInterface( unk, &IID_IOleCache, (void**)&cache );
 276         if (FAILED(hr)) goto end;
 277
 278         for (i = 0; i < num_fmts; i++)
 279         {
 280             STGMEDIUM med;
 281             DWORD dummy_conn;
 282
 283             memset( &med, 0, sizeof(med) );
 284             hr = IDataObject_GetData( data, fmts + i, &med );
 285             if (FAILED(hr)) goto end;
 286             hr = IOleCache_Cache( cache, fmts + i, adv_flags[i], &dummy_conn );
 287             if (SUCCEEDED(hr))
 288                 hr = IOleCache_SetData( cache, fmts + i, &med, TRUE );
 289             if (FAILED(hr))
 290             {
 291                 ReleaseStgMedium( &med );
 292                 goto end;
 293             }
 294         }
 295     }
 296
 297     hr = IUnknown_QueryInterface( unk, iid, obj );
 298
 299 end:
 300     if (cache) IOleCache_Release( cache );
 301     if (unk) IUnknown_Release( unk );
 302     IDataObject_Release( data );
 303     return hr;
 304 }
 305
 306 /******************************************************************************
 307  *              OleCreateFromFile        [OLE32.@]
 308  */
 309 HRESULT WINAPI OleCreateFromFile(REFCLSID clsid, const OLECHAR *filename, REFIID iid, DWORD renderopt,
 310                                  FORMATETC *fmt, IOleClientSite *client_site, IStorage *storage, void **obj)
 311 {
 312     DWORD advf = ADVF_PRIMEFIRST;
 313
 314     return OleCreateFromFileEx(clsid, filename, iid, 0, renderopt, fmt ? 1 : 0, fmt ? &advf : NULL, fmt,
 315                                NULL, NULL, client_site, storage, obj);
 316 }
 317
 318 /******************************************************************************
 319  *              OleDuplicateData        [OLE32.@]
 320  *
 321  * Duplicates clipboard data.
 322  *
 323  * PARAMS
 324  *  hSrc     [I] Handle of the source clipboard data.
 325  *  cfFormat [I] The clipboard format of hSrc.
 326  *  uiFlags  [I] Flags to pass to GlobalAlloc.
 327  *
 328  * RETURNS
 329  *  Success: handle to the duplicated data.
 330  *  Failure: NULL.
 331  */
 332 HANDLE WINAPI OleDuplicateData(HANDLE hSrc, CLIPFORMAT cfFormat,
 333                                   UINT uiFlags)
 334 {
 335     HANDLE hDst = NULL;
 336
 337     TRACE("(%p,%x,%x)\n", hSrc, cfFormat, uiFlags);
 338
 339     if (!uiFlags) uiFlags = GMEM_MOVEABLE;
 340
 341     switch (cfFormat)
 342     {
 343     case CF_ENHMETAFILE:
 344         hDst = CopyEnhMetaFileW(hSrc, NULL);
 345         break;
 346     case CF_METAFILEPICT:
 347         hDst = CopyMetaFileW(hSrc, NULL);
 348         break;
 349     case CF_PALETTE:
 350         {
 351             LOGPALETTE * logpalette;
 352             UINT nEntries = GetPaletteEntries(hSrc, 0, 0, NULL);
 353             if (!nEntries) return NULL;
 354             logpalette = HeapAlloc(GetProcessHeap(), 0,
 355                 FIELD_OFFSET(LOGPALETTE, palPalEntry[nEntries]));
 356             if (!logpalette) return NULL;
 357             if (!GetPaletteEntries(hSrc, 0, nEntries, logpalette->palPalEntry))
 358             {
 359                 HeapFree(GetProcessHeap(), 0, logpalette);
 360                 return NULL;
 361             }
 362             logpalette->palVersion = 0x300;
 363             logpalette->palNumEntries = (WORD)nEntries;
 364
 365             hDst = CreatePalette(logpalette);
 366
 367             HeapFree(GetProcessHeap(), 0, logpalette);
 368             break;
 369         }
 370     case CF_BITMAP:
 371         {
 372             LONG size;
 373             BITMAP bm;
 374             if (!GetObjectW(hSrc, sizeof(bm), &bm))
 375                 return NULL;
 376             size = GetBitmapBits(hSrc, 0, NULL);
 377             if (!size) return NULL;
 378             bm.bmBits = HeapAlloc(GetProcessHeap(), 0, size);
 379             if (!bm.bmBits) return NULL;
 380             if (GetBitmapBits(hSrc, size, bm.bmBits))
 381                 hDst = CreateBitmapIndirect(&bm);
 382             HeapFree(GetProcessHeap(), 0, bm.bmBits);
 383             break;
 384         }
 385     default:
 386         {
 387             SIZE_T size = GlobalSize(hSrc);
 388             LPVOID pvSrc = NULL;
 389             LPVOID pvDst = NULL;
 390
 391             /* allocate space for object */
 392             if (!size) return NULL;
 393             hDst = GlobalAlloc(uiFlags, size);
 394             if (!hDst) return NULL;
 395
 396             /* lock pointers */
 397             pvSrc = GlobalLock(hSrc);
 398             if (!pvSrc)
 399             {
 400                 GlobalFree(hDst);
 401                 return NULL;
 402             }
 403             pvDst = GlobalLock(hDst);
 404             if (!pvDst)
 405             {
 406                 GlobalUnlock(hSrc);
 407                 GlobalFree(hDst);
 408                 return NULL;
 409             }
 410             /* copy data */
 411             memcpy(pvDst, pvSrc, size);
 412
 413             /* cleanup */
 414             GlobalUnlock(hDst);
 415             GlobalUnlock(hSrc);
 416         }
 417     }
 418
 419     TRACE("returning %p\n", hDst);
 420     return hDst;
 421 }