git.oblomov.eu Git - wine/blob - dlls/shell32/clipboard.c

   1 /*
   2  *      clipboard helper functions
   3  *
   4  *      Copyright 2000  Juergen Schmied <juergen.schmied@debitel.de>
   5  *
   6  * For copy & paste functions within contextmenus does the shell use
   7  * the OLE clipboard functions in combination with dataobjects.
   8  * The OLE32.DLL gets loaded with LoadLibrary
   9  *
  10  * - a right mousebutton-copy sets the following formats:
  11  *  classic:
  12  *      Shell IDList Array
  13  *      Prefered Drop Effect
  14  *      Shell Object Offsets
  15  *      HDROP
  16  *      FileName
  17  *  ole:
  18  *      OlePrivateData (ClipboardDataObjectInterface)
  19  *
  20  */
  21
  22 #include <string.h>
  23
  24 #include "winreg.h"
  25 #include "pidl.h"
  26 #include "undocshell.h"
  27 #include "shell32_main.h"
  28 #include "shlwapi.h"
  29
  30 #include "debugtools.h"
  31
  32 DEFAULT_DEBUG_CHANNEL(shell);
  33
  34 static int refClipCount = 0;
  35 static HINSTANCE hShellOle32 = 0;
  36
  37 /**************************************************************************
  38  * InitShellOle
  39  *
  40  *
  41  */
  42 void InitShellOle(void)
  43 {
  44 }
  45
  46 /**************************************************************************
  47  * FreeShellOle
  48  *
  49  * unload OLE32.DLL
  50  */
  51 void FreeShellOle(void)
  52 {
  53         if (!--refClipCount)
  54         {
  55           pOleUninitialize();
  56           FreeLibrary(hShellOle32);
  57         }
  58 }
  59
  60 /**************************************************************************
  61  * LoadShellOle
  62  *
  63  * make sure OLE32.DLL is loaded
  64  */
  65 BOOL GetShellOle(void)
  66 {
  67         if(!refClipCount)
  68         {
  69           hShellOle32 = LoadLibraryA("ole32.dll");
  70           if(hShellOle32)
  71           {
  72             pOleInitialize=(void*)GetProcAddress(hShellOle32,"OleInitialize");
  73             pOleUninitialize=(void*)GetProcAddress(hShellOle32,"OleUninitialize");
  74             pRegisterDragDrop=(void*)GetProcAddress(hShellOle32,"RegisterDragDrop");
  75             pRevokeDragDrop=(void*)GetProcAddress(hShellOle32,"RevokeDragDrop");
  76             pDoDragDrop=(void*)GetProcAddress(hShellOle32,"DoDragDrop");
  77             pReleaseStgMedium=(void*)GetProcAddress(hShellOle32,"ReleaseStgMedium");
  78             pOleSetClipboard=(void*)GetProcAddress(hShellOle32,"OleSetClipboard");
  79             pOleGetClipboard=(void*)GetProcAddress(hShellOle32,"OleGetClipboard");
  80
  81             pOleInitialize(NULL);
  82             refClipCount++;
  83           }
  84         }
  85         return TRUE;
  86 }
  87
  88 /**************************************************************************
  89  * RenderHDROP
  90  *
  91  * creates a CF_HDROP structure
  92  */
  93 HGLOBAL RenderHDROP(LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
  94 {
  95         int i;
  96         int rootsize = 0,size = 0;
  97         char szRootPath[MAX_PATH];
  98         char szFileName[MAX_PATH];
  99         HGLOBAL hGlobal;
 100         DROPFILES *pDropFiles;
 101         int offset;
 102
 103         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
 104
 105         /* get the size needed */
 106         size = sizeof(DROPFILES);
 107
 108         SHGetPathFromIDListA(pidlRoot, szRootPath);
 109         PathAddBackslashA(szRootPath);
 110         rootsize = strlen(szRootPath);
 111
 112         for (i=0; i<cidl;i++)
 113         {
 114           _ILSimpleGetText(apidl[i], szFileName, MAX_PATH);
 115           size += rootsize + strlen(szFileName) + 1;
 116         }
 117
 118         size++;
 119
 120         /* Fill the structure */
 121         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
 122         if(!hGlobal) return hGlobal;
 123
 124         pDropFiles = (DROPFILES *)GlobalLock(hGlobal);
 125         pDropFiles->pFiles = sizeof(DROPFILES);
 126         pDropFiles->fWide = FALSE;
 127
 128         offset = pDropFiles->pFiles;
 129         strcpy(szFileName, szRootPath);
 130
 131         for (i=0; i<cidl;i++)
 132         {
 133
 134           _ILSimpleGetText(apidl[i], szFileName + rootsize, MAX_PATH - rootsize);
 135           size = strlen(szFileName) + 1;
 136           strcpy(((char*)pDropFiles)+offset, szFileName);
 137           offset += size;
 138         }
 139
 140         ((char*)pDropFiles)[offset] = 0;
 141         GlobalUnlock(hGlobal);
 142
 143         return hGlobal;
 144 }
 145
 146 HGLOBAL RenderSHELLIDLIST (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 147 {
 148         int i,offset = 0, sizePidl, size;
 149         HGLOBAL hGlobal;
 150         LPCIDA  pcida;
 151
 152         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
 153
 154         /* get the size needed */
 155         size = sizeof(CIDA) + sizeof (UINT)*(cidl);     /* header */
 156         size += ILGetSize (pidlRoot);                   /* root pidl */
 157         for(i=0; i<cidl; i++)
 158         {
 159           size += ILGetSize(apidl[i]);                  /* child pidls */
 160         }
 161
 162         /* fill the structure */
 163         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
 164         if(!hGlobal) return hGlobal;
 165         pcida = GlobalLock (hGlobal);
 166         pcida->cidl = cidl;
 167
 168         /* root pidl */
 169         offset = sizeof(CIDA) + sizeof (UINT)*(cidl);
 170         pcida->aoffset[0] = offset;                     /* first element */
 171         sizePidl = ILGetSize (pidlRoot);
 172         memcpy(((LPBYTE)pcida)+offset, pidlRoot, sizePidl);
 173         offset += sizePidl;
 174
 175         for(i=0; i<cidl; i++)                           /* child pidls */
 176         {
 177           pcida->aoffset[i+1] = offset;
 178           sizePidl = ILGetSize(apidl[i]);
 179           memcpy(((LPBYTE)pcida)+offset, apidl[i], sizePidl);
 180           offset += sizePidl;
 181         }
 182
 183         GlobalUnlock(hGlobal);
 184         return hGlobal;
 185 }
 186
 187 HGLOBAL RenderSHELLIDLISTOFFSET (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 188 {
 189         FIXME("\n");
 190         return 0;
 191 }
 192
 193 HGLOBAL RenderFILECONTENTS (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 194 {
 195         FIXME("\n");
 196         return 0;
 197 }
 198
 199 HGLOBAL RenderFILEDESCRIPTOR (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 200 {
 201         FIXME("\n");
 202         return 0;
 203 }
 204
 205 HGLOBAL RenderFILENAME (LPITEMIDLIST pidlRoot, LPITEMIDLIST * apidl, UINT cidl)
 206 {
 207         int len, size = 0;
 208         char szTemp[MAX_PATH], *szFileName;
 209         HGLOBAL hGlobal;
 210
 211         TRACE("(%p,%p,%u)\n", pidlRoot, apidl, cidl);
 212
 213         /* build name of first file */
 214         SHGetPathFromIDListA(pidlRoot, szTemp);
 215         PathAddBackslashA(szTemp);
 216         len = strlen(szTemp);
 217         _ILSimpleGetText(apidl[0], szTemp+len, MAX_PATH - len);
 218         size = strlen(szTemp) + 1;
 219
 220         /* fill the structure */
 221         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, size);
 222         if(!hGlobal) return hGlobal;
 223         szFileName = (char *)GlobalLock(hGlobal);
 224         GlobalUnlock(hGlobal);
 225         return hGlobal;
 226 }
 227
 228 HGLOBAL RenderPREFEREDDROPEFFECT (DWORD dwFlags)
 229 {
 230         DWORD * pdwFlag;
 231         HGLOBAL hGlobal;
 232
 233         TRACE("(0x%08lx)\n", dwFlags);
 234
 235         hGlobal = GlobalAlloc(GHND|GMEM_SHARE, sizeof(DWORD));
 236         if(!hGlobal) return hGlobal;
 237         pdwFlag = (DWORD*)GlobalLock(hGlobal);
 238         *pdwFlag = dwFlags;
 239         GlobalUnlock(hGlobal);
 240         return hGlobal;
 241 }
 242
 243 /**************************************************************************
 244  * IsDataInClipboard
 245  *
 246  * checks if there is something in the clipboard we can use
 247  */
 248 BOOL IsDataInClipboard (HWND hwnd)
 249 {
 250         BOOL ret = FALSE;
 251
 252         if (OpenClipboard(hwnd))
 253         {
 254           if (GetOpenClipboardWindow())
 255           {
 256             ret = IsClipboardFormatAvailable(CF_TEXT);
 257           }
 258           CloseClipboard();
 259         }
 260         return ret;
 261 }