dlls/shell32/clipboard.c

   1 /*
   2  *      clipboard helper functions
   3  *
   4  *      Copyright 2000  Juergen Schmied <juergen.schmied@debitel.de>
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * NOTES:
  21  *
  22  * For copy & paste functions within contextmenus does the shell use
  23  * the OLE clipboard functions in combination with dataobjects.
  24  * The OLE32.DLL gets loaded with LoadLibrary
  25  *
  26  * - a right mousebutton-copy sets the following formats:
  27  *  classic:
  28  *      Shell IDList Array
  29  *      Preferred Drop Effect
  30  *      Shell Object Offsets
  31  *      HDROP
  32  *      FileName
  33  *  ole:
  34  *      OlePrivateData (ClipboardDataObjectInterface)
  35  *
  36  */
  37
  38 #include <stdarg.h>
  39 #include <string.h>
  40
  41 #include "windef.h"
  42 #include "winbase.h"
  43 #include "winreg.h"
  44 #include "wingdi.h"
  45 #include "pidl.h"
  46 #include "undocshell.h"
  47 #include "shell32_main.h"
  48 #include "shlwapi.h"
  49
  50 #include "wine/unicode.h"
  51 #include "wine/debug.h"
  52
  53 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  54
  55 /**************************************************************************
  56  * RenderHDROP
  57  *
  58  * creates a CF_HDROP structure
  59  */
  60 HGLOBAL RenderHDROP(LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
  61 {
  62         UINT i;
  63         int rootsize = 0,size = 0;
  64         char szRootPath[MAX_PATH];
  65         char szFileName[MAX_PATH];
  66         HGLOBAL hGlobal;
  67         DROPFILES *pDropFiles;
  68         int offset;
  69
  70         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
  71
  72         /* get the size needed */
  73         size = sizeof(DROPFILES);
  74
  75         SHGetPathFromIDListA(pidlRoot, szRootPath);
  76         PathAddBackslashA(szRootPath);
  77         rootsize = strlen(szRootPath);
  78
  79         for (i=0; i<cidl;i++)
  80         {
  81           _ILSimpleGetText(apidl[i], szFileName, MAX_PATH);
  82           size += rootsize + strlen(szFileName) + 1;
  83         }
  84
  85         size++;
  86
  87         /* Fill the structure */
  88         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
  89         if(!hGlobal) return hGlobal;
  90
  91         pDropFiles = (DROPFILES *)GlobalLock(hGlobal);
  92         pDropFiles->pFiles = sizeof(DROPFILES);
  93         pDropFiles->fWide = FALSE;
  94
  95         offset = pDropFiles->pFiles;
  96         strcpy(szFileName, szRootPath);
  97
  98         for (i=0; i<cidl;i++)
  99         {
 100
 101           _ILSimpleGetText(apidl[i], szFileName + rootsize, MAX_PATH - rootsize);
 102           size = strlen(szFileName) + 1;
 103           strcpy(((char*)pDropFiles)+offset, szFileName);
 104           offset += size;
 105         }
 106
 107         ((char*)pDropFiles)[offset] = 0;
 108         GlobalUnlock(hGlobal);
 109
 110         return hGlobal;
 111 }
 112
 113 HGLOBAL RenderSHELLIDLIST (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 114 {
 115         UINT i;
 116         int offset = 0, sizePidl, size;
 117         HGLOBAL hGlobal;
 118         LPIDA   pcida;
 119
 120         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
 121
 122         /* get the size needed */
 123         size = sizeof(CIDA) + sizeof (UINT)*(cidl);     /* header */
 124         size += ILGetSize (pidlRoot);                   /* root pidl */
 125         for(i=0; i<cidl; i++)
 126         {
 127           size += ILGetSize(apidl[i]);                  /* child pidls */
 128         }
 129
 130         /* fill the structure */
 131         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
 132         if(!hGlobal) return hGlobal;
 133         pcida = GlobalLock (hGlobal);
 134         pcida->cidl = cidl;
 135
 136         /* root pidl */
 137         offset = sizeof(CIDA) + sizeof (UINT)*(cidl);
 138         pcida->aoffset[0] = offset;                     /* first element */
 139         sizePidl = ILGetSize (pidlRoot);
 140         memcpy(((LPBYTE)pcida)+offset, pidlRoot, sizePidl);
 141         offset += sizePidl;
 142
 143         for(i=0; i<cidl; i++)                           /* child pidls */
 144         {
 145           pcida->aoffset[i+1] = offset;
 146           sizePidl = ILGetSize(apidl[i]);
 147           memcpy(((LPBYTE)pcida)+offset, apidl[i], sizePidl);
 148           offset += sizePidl;
 149         }
 150
 151         GlobalUnlock(hGlobal);
 152         return hGlobal;
 153 }
 154
 155 HGLOBAL RenderSHELLIDLISTOFFSET (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 156 {
 157         FIXME("\n");
 158         return 0;
 159 }
 160
 161 HGLOBAL RenderFILECONTENTS (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 162 {
 163         FIXME("\n");
 164         return 0;
 165 }
 166
 167 HGLOBAL RenderFILEDESCRIPTOR (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 168 {
 169         FIXME("\n");
 170         return 0;
 171 }
 172
 173 HGLOBAL RenderFILENAMEA (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 174 {
 175         int size = 0;
 176         char szTemp[MAX_PATH], *szFileName;
 177         LPITEMIDLIST pidl;
 178         HGLOBAL hGlobal;
 179         BOOL bSuccess;
 180
 181         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
 182
 183         /* get path of combined pidl */
 184         pidl = ILCombine(pidlRoot, apidl[0]);
 185         if (!pidl)
 186                 return 0;
 187
 188         bSuccess = SHGetPathFromIDListA(pidl, szTemp);
 189         SHFree(pidl);
 190         if (!bSuccess)
 191                 return 0;
 192
 193         size = strlen(szTemp) + 1;
 194
 195         /* fill the structure */
 196         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
 197         if(!hGlobal) return hGlobal;
 198         szFileName = (char *)GlobalLock(hGlobal);
 199         memcpy(szFileName, szTemp, size);
 200         GlobalUnlock(hGlobal);
 201
 202         return hGlobal;
 203 }
 204
 205 HGLOBAL RenderFILENAMEW (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 206 {
 207         int size = 0;
 208         WCHAR szTemp[MAX_PATH], *szFileName;
 209         LPITEMIDLIST pidl;
 210         HGLOBAL hGlobal;
 211         BOOL bSuccess;
 212
 213         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
 214
 215         /* get path of combined pidl */
 216         pidl = ILCombine(pidlRoot, apidl[0]);
 217         if (!pidl)
 218                 return 0;
 219
 220         bSuccess = SHGetPathFromIDListW(pidl, szTemp);
 221         SHFree(pidl);
 222         if (!bSuccess)
 223                 return 0;
 224
 225         size = (strlenW(szTemp)+1) * sizeof(WCHAR);
 226
 227         /* fill the structure */
 228         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
 229         if(!hGlobal) return hGlobal;
 230         szFileName = (WCHAR *)GlobalLock(hGlobal);
 231         memcpy(szFileName, szTemp, size);
 232         GlobalUnlock(hGlobal);
 233
 234         return hGlobal;
 235 }
 236
 237 HGLOBAL RenderPREFEREDDROPEFFECT (DWORD dwFlags)
 238 {
 239         DWORD * pdwFlag;
 240         HGLOBAL hGlobal;
 241
 242         TRACE("(0x%08lx)\n", dwFlags);
 243
 244         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, sizeof(DWORD));
 245         if(!hGlobal) return hGlobal;
 246         pdwFlag = (DWORD*)GlobalLock(hGlobal);
 247         *pdwFlag = dwFlags;
 248         GlobalUnlock(hGlobal);
 249         return hGlobal;
 250 }
 251
 252 /**************************************************************************
 253  * IsDataInClipboard
 254  *
 255  * checks if there is something in the clipboard we can use
 256  */
 257 BOOL IsDataInClipboard (HWND hwnd)
 258 {
 259         BOOL ret = FALSE;
 260
 261         if (OpenClipboard(hwnd))
 262         {
 263           if (GetOpenClipboardWindow())
 264           {
 265             ret = IsClipboardFormatAvailable(CF_TEXT);
 266           }
 267           CloseClipboard();
 268         }
 269         return ret;
 270 }