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269a5a34 VZ |
1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Name: msw/ole/dataobj.cpp | |
3 | // Purpose: implementation of wx[I]DataObject class | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 10.05.98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
9 | // Licence: wxWindows license | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #ifdef __GNUG__ | |
21 | #pragma implementation "dataobj.h" | |
22 | #endif | |
23 | ||
24 | // For compilers that support precompilation, includes "wx.h". | |
25 | #include "wx/wxprec.h" | |
26 | ||
27 | #if defined(__BORLANDC__) | |
28 | #pragma hdrstop | |
29 | #endif | |
30 | ||
31 | #include <wx/log.h> | |
32 | #include <wx/msw/ole/oleutils.h> | |
33 | #include <wx/msw/ole/dataobj.h> | |
34 | ||
35 | #ifndef __WIN32__ | |
36 | #include <ole2.h> | |
37 | #include <olestd.h> | |
38 | #endif | |
39 | ||
40 | // ---------------------------------------------------------------------------- | |
41 | // functions | |
42 | // ---------------------------------------------------------------------------- | |
43 | ||
40e1a9c0 | 44 | static const char *GetTymedName(DWORD tymed); |
269a5a34 VZ |
45 | |
46 | // ---------------------------------------------------------------------------- | |
47 | // wxIEnumFORMATETC interface implementation | |
48 | // ---------------------------------------------------------------------------- | |
49 | class wxIEnumFORMATETC : public IEnumFORMATETC | |
50 | { | |
51 | public: | |
52 | wxIEnumFORMATETC(CLIPFORMAT cf); | |
53 | ||
54 | DECLARE_IUNKNOWN_METHODS; | |
55 | ||
56 | // IEnumFORMATETC | |
57 | STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched); | |
58 | STDMETHODIMP Skip(ULONG celt); | |
59 | STDMETHODIMP Reset(); | |
60 | STDMETHODIMP Clone(IEnumFORMATETC **ppenum); | |
61 | ||
62 | private: | |
63 | FORMATETC m_format; // (unique @@@) format we can provide data in | |
64 | ULONG m_nCurrent; // current enum position (currently either 0 or 1) | |
65 | }; | |
66 | ||
67 | // ---------------------------------------------------------------------------- | |
68 | // wxIDataObject implementation of IDataObject interface | |
69 | // ---------------------------------------------------------------------------- | |
70 | class wxIDataObject : public IDataObject | |
71 | { | |
72 | public: | |
73 | wxIDataObject(wxDataObject *pDataObject); | |
74 | ||
75 | DECLARE_IUNKNOWN_METHODS; | |
76 | ||
77 | // IDataObject | |
78 | STDMETHODIMP GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium); | |
79 | STDMETHODIMP GetDataHere(FORMATETC *pformatetc, STGMEDIUM *pmedium); | |
80 | STDMETHODIMP QueryGetData(FORMATETC *pformatetc); | |
81 | STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *In, FORMATETC *pOut); | |
82 | STDMETHODIMP SetData(FORMATETC *pfetc, STGMEDIUM *pmedium, BOOL fRelease); | |
83 | STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppenumFEtc); | |
84 | STDMETHODIMP DAdvise(FORMATETC *pfetc, DWORD ad, IAdviseSink *p, DWORD *pdw); | |
85 | STDMETHODIMP DUnadvise(DWORD dwConnection); | |
86 | STDMETHODIMP EnumDAdvise(IEnumSTATDATA **ppenumAdvise); | |
87 | ||
88 | private: | |
89 | wxDataObject *m_pDataObject; // pointer to C++ class we belong to | |
90 | }; | |
91 | ||
92 | // ============================================================================ | |
93 | // implementation | |
94 | // ============================================================================ | |
95 | ||
96 | // ---------------------------------------------------------------------------- | |
97 | // wxIEnumFORMATETC | |
98 | // ---------------------------------------------------------------------------- | |
99 | ||
100 | BEGIN_IID_TABLE(wxIEnumFORMATETC) | |
101 | ADD_IID(Unknown) | |
102 | ADD_IID(EnumFORMATETC) | |
103 | END_IID_TABLE; | |
104 | ||
105 | IMPLEMENT_IUNKNOWN_METHODS(wxIEnumFORMATETC) | |
106 | ||
107 | wxIEnumFORMATETC::wxIEnumFORMATETC(CLIPFORMAT cf) | |
108 | { | |
109 | m_format.cfFormat = cf; | |
110 | m_format.ptd = NULL; | |
111 | m_format.dwAspect = DVASPECT_CONTENT; | |
112 | m_format.lindex = -1; | |
113 | m_format.tymed = TYMED_HGLOBAL; | |
114 | m_cRef = 0; | |
115 | m_nCurrent = 0; | |
116 | } | |
117 | ||
118 | STDMETHODIMP wxIEnumFORMATETC::Next(ULONG celt, | |
119 | FORMATETC *rgelt, | |
120 | ULONG *pceltFetched) | |
121 | { | |
122 | wxLogTrace("wxIEnumFORMATETC::Next"); | |
123 | ||
124 | if ( celt > 1 ) | |
125 | return S_FALSE; | |
126 | ||
127 | if ( m_nCurrent == 0 ) { | |
128 | *rgelt = m_format; | |
129 | m_nCurrent++; | |
130 | ||
131 | return S_OK; | |
132 | } | |
133 | else | |
134 | return S_FALSE; | |
135 | } | |
136 | ||
137 | STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt) | |
138 | { | |
139 | wxLogTrace("wxIEnumFORMATETC::Skip"); | |
140 | ||
141 | if ( m_nCurrent == 0 ) | |
142 | m_nCurrent++; | |
143 | ||
144 | return S_FALSE; | |
145 | } | |
146 | ||
147 | STDMETHODIMP wxIEnumFORMATETC::Reset() | |
148 | { | |
149 | wxLogTrace("wxIEnumFORMATETC::Reset"); | |
150 | ||
151 | m_nCurrent = 0; | |
152 | ||
153 | return S_OK; | |
154 | } | |
155 | ||
156 | STDMETHODIMP wxIEnumFORMATETC::Clone(IEnumFORMATETC **ppenum) | |
157 | { | |
158 | wxLogTrace("wxIEnumFORMATETC::Clone"); | |
159 | ||
160 | wxIEnumFORMATETC *pNew = new wxIEnumFORMATETC(m_format.cfFormat); | |
161 | pNew->AddRef(); | |
162 | *ppenum = pNew; | |
163 | ||
164 | return S_OK; | |
165 | } | |
166 | ||
167 | // ---------------------------------------------------------------------------- | |
168 | // wxIDataObject | |
169 | // ---------------------------------------------------------------------------- | |
170 | ||
171 | BEGIN_IID_TABLE(wxIDataObject) | |
172 | ADD_IID(Unknown) | |
173 | ADD_IID(DataObject) | |
174 | END_IID_TABLE; | |
175 | ||
176 | IMPLEMENT_IUNKNOWN_METHODS(wxIDataObject) | |
177 | ||
178 | wxIDataObject::wxIDataObject(wxDataObject *pDataObject) | |
179 | { | |
180 | m_cRef = 0; | |
181 | m_pDataObject = pDataObject; | |
182 | } | |
183 | ||
184 | // get data functions | |
185 | STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium) | |
186 | { | |
187 | wxLogTrace("wxIDataObject::GetData"); | |
188 | ||
189 | // is data is in our format? | |
190 | HRESULT hr = QueryGetData(pformatetcIn); | |
191 | if ( FAILED(hr) ) | |
192 | return hr; | |
193 | ||
194 | // alloc memory | |
195 | HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, | |
196 | m_pDataObject->GetDataSize()); | |
197 | if ( hGlobal == NULL ) { | |
198 | wxLogLastError("GlobalAlloc"); | |
199 | return E_OUTOFMEMORY; | |
200 | } | |
201 | ||
202 | // copy data | |
203 | pmedium->tymed = TYMED_HGLOBAL; | |
204 | pmedium->hGlobal = hGlobal; | |
205 | pmedium->pUnkForRelease = NULL; | |
206 | ||
207 | hr = GetDataHere(pformatetcIn, pmedium); | |
208 | if ( FAILED(hr) ) { | |
209 | GlobalFree(hGlobal); | |
210 | return hr; | |
211 | } | |
212 | ||
213 | return S_OK; | |
214 | } | |
215 | ||
216 | STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc, | |
217 | STGMEDIUM *pmedium) | |
218 | { | |
219 | wxLogTrace("wxIDataObject::GetDataHere"); | |
220 | ||
221 | // put data in caller provided medium | |
222 | if ( pmedium->tymed != TYMED_HGLOBAL ) | |
223 | return DV_E_TYMED; | |
224 | ||
225 | // copy data | |
226 | void *pBuf = GlobalLock(pmedium->hGlobal); | |
227 | if ( pBuf == NULL ) { | |
228 | wxLogLastError("GlobalLock"); | |
229 | return E_OUTOFMEMORY; | |
230 | } | |
231 | ||
232 | m_pDataObject->GetDataHere(pBuf); | |
233 | ||
234 | GlobalUnlock(pmedium->hGlobal); | |
235 | ||
236 | return S_OK; | |
237 | } | |
238 | ||
239 | // set data functions (not implemented) | |
240 | STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc, | |
241 | STGMEDIUM *pmedium, | |
242 | BOOL fRelease) | |
243 | { | |
244 | wxLogTrace("wxIDataObject::SetData"); | |
245 | return E_NOTIMPL; | |
246 | } | |
247 | ||
248 | // information functions | |
249 | STDMETHODIMP wxIDataObject::QueryGetData(FORMATETC *pformatetc) | |
250 | { | |
251 | // do we accept data in this format? | |
252 | if ( pformatetc == NULL ) { | |
253 | wxLogTrace("wxIDataObject::QueryGetData: invalid ptr."); | |
254 | return E_INVALIDARG; | |
255 | } | |
256 | ||
257 | // the only one allowed by current COM implementation | |
258 | if ( pformatetc->lindex != -1 ) { | |
259 | wxLogTrace("wxIDataObject::QueryGetData: bad lindex %d", | |
260 | pformatetc->lindex); | |
261 | return DV_E_LINDEX; | |
262 | } | |
263 | ||
264 | // we don't support anything other (THUMBNAIL, ICON, DOCPRINT...) | |
265 | if ( pformatetc->dwAspect != DVASPECT_CONTENT ) { | |
266 | wxLogTrace("wxIDataObject::QueryGetData: bad dwAspect %d", | |
267 | pformatetc->dwAspect); | |
268 | return DV_E_DVASPECT; | |
269 | } | |
270 | ||
271 | // @@ we only transfer data by global memory (bad for large amounts of it!) | |
272 | if ( !(pformatetc->tymed & TYMED_HGLOBAL) ) { | |
273 | wxLogTrace("wxIDataObject::QueryGetData: %s != TYMED_HGLOBAL.", | |
274 | GetTymedName(pformatetc->tymed)); | |
275 | return DV_E_TYMED; | |
276 | } | |
277 | ||
278 | // and now check the type of data requested | |
279 | if ( m_pDataObject->IsSupportedFormat(pformatetc->cfFormat) ) { | |
280 | wxLogTrace("wxIDataObject::QueryGetData: %s ok", | |
281 | wxDataObject::GetFormatName(pformatetc->cfFormat)); | |
282 | return S_OK; | |
283 | } | |
284 | else { | |
285 | wxLogTrace("wxIDataObject::QueryGetData: %s unsupported", | |
286 | wxDataObject::GetFormatName(pformatetc->cfFormat)); | |
287 | return DV_E_FORMATETC; | |
288 | } | |
289 | } | |
290 | ||
291 | STDMETHODIMP wxIDataObject::GetCanonicalFormatEtc(FORMATETC *pFormatetcIn, | |
292 | FORMATETC *pFormatetcOut) | |
293 | { | |
294 | wxLogTrace("wxIDataObject::GetCanonicalFormatEtc"); | |
295 | ||
296 | // @@ implementation is trivial, we might want something better here | |
297 | if ( pFormatetcOut != NULL ) | |
298 | pFormatetcOut->ptd = NULL; | |
299 | return DATA_S_SAMEFORMATETC; | |
300 | } | |
301 | ||
302 | STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDirection, | |
303 | IEnumFORMATETC **ppenumFormatEtc) | |
304 | { | |
305 | wxLogTrace("wxIDataObject::EnumFormatEtc"); | |
306 | ||
307 | if ( dwDirection == DATADIR_SET ) { | |
308 | // we don't allow setting of data anyhow | |
309 | return E_NOTIMPL; | |
310 | } | |
311 | ||
312 | wxIEnumFORMATETC *pEnum = | |
313 | new wxIEnumFORMATETC(m_pDataObject->GetPreferredFormat()); | |
314 | pEnum->AddRef(); | |
315 | *ppenumFormatEtc = pEnum; | |
316 | ||
317 | return S_OK; | |
318 | } | |
319 | ||
320 | // advise sink functions (not implemented) | |
321 | STDMETHODIMP wxIDataObject::DAdvise(FORMATETC *pformatetc, | |
322 | DWORD advf, | |
323 | IAdviseSink *pAdvSink, | |
324 | DWORD *pdwConnection) | |
325 | { | |
326 | return OLE_E_ADVISENOTSUPPORTED; | |
327 | } | |
328 | ||
329 | STDMETHODIMP wxIDataObject::DUnadvise(DWORD dwConnection) | |
330 | { | |
331 | return OLE_E_ADVISENOTSUPPORTED; | |
332 | } | |
333 | ||
334 | STDMETHODIMP wxIDataObject::EnumDAdvise(IEnumSTATDATA **ppenumAdvise) | |
335 | { | |
336 | return OLE_E_ADVISENOTSUPPORTED; | |
337 | } | |
338 | ||
339 | // ---------------------------------------------------------------------------- | |
340 | // wxDataObject | |
341 | // ---------------------------------------------------------------------------- | |
342 | ||
343 | wxDataObject::wxDataObject() | |
344 | { | |
345 | m_pIDataObject = new wxIDataObject(this); | |
346 | m_pIDataObject->AddRef(); | |
347 | } | |
348 | ||
349 | wxDataObject::~wxDataObject() | |
350 | { | |
351 | m_pIDataObject->Release(); | |
352 | } | |
353 | ||
269a5a34 VZ |
354 | const char *wxDataObject::GetFormatName(wxDataFormat format) |
355 | { | |
40e1a9c0 | 356 | #ifdef __DEBUG__ |
269a5a34 VZ |
357 | static char s_szBuf[128]; |
358 | switch ( format ) { | |
359 | case CF_TEXT: return "CF_TEXT"; | |
360 | case CF_BITMAP: return "CF_BITMAP"; | |
361 | case CF_METAFILEPICT: return "CF_METAFILEPICT"; | |
362 | case CF_SYLK: return "CF_SYLK"; | |
363 | case CF_DIF: return "CF_DIF"; | |
364 | case CF_TIFF: return "CF_TIFF"; | |
365 | case CF_OEMTEXT: return "CF_OEMTEXT"; | |
366 | case CF_DIB: return "CF_DIB"; | |
367 | case CF_PALETTE: return "CF_PALETTE"; | |
368 | case CF_PENDATA: return "CF_PENDATA"; | |
369 | case CF_RIFF: return "CF_RIFF"; | |
370 | case CF_WAVE: return "CF_WAVE"; | |
371 | case CF_UNICODETEXT: return "CF_UNICODETEXT"; | |
372 | case CF_ENHMETAFILE: return "CF_ENHMETAFILE"; | |
373 | case CF_HDROP: return "CF_HDROP"; | |
374 | case CF_LOCALE: return "CF_LOCALE"; | |
375 | default: | |
376 | sprintf(s_szBuf, "clipboard format %d (unknown)", format); | |
377 | return s_szBuf; | |
378 | } | |
40e1a9c0 JS |
379 | #else |
380 | return ""; | |
381 | #endif | |
269a5a34 VZ |
382 | } |
383 | ||
384 | // ---------------------------------------------------------------------------- | |
385 | // private functions | |
386 | // ---------------------------------------------------------------------------- | |
387 | static const char *GetTymedName(DWORD tymed) | |
388 | { | |
389 | static char s_szBuf[128]; | |
390 | switch ( tymed ) { | |
391 | case TYMED_HGLOBAL: return "TYMED_HGLOBAL"; | |
392 | case TYMED_FILE: return "TYMED_FILE"; | |
393 | case TYMED_ISTREAM: return "TYMED_ISTREAM"; | |
394 | case TYMED_ISTORAGE: return "TYMED_ISTORAGE"; | |
395 | case TYMED_GDI: return "TYMED_GDI"; | |
396 | case TYMED_MFPICT: return "TYMED_MFPICT"; | |
397 | case TYMED_ENHMF: return "TYMED_ENHMF"; | |
398 | default: | |
399 | sprintf(s_szBuf, "type of media format %d (unknown)", tymed); | |
400 | return s_szBuf; | |
401 | } | |
402 | } |