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