source: trunk/src/gui/kernel/qole_win.cpp@ 147

Last change on this file since 147 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.

File size: 6.1 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtGui module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qdnd_p.h"
43
44#if !(defined(QT_NO_DRAGANDDROP) && defined(QT_NO_CLIPBOARD))
45
46#if defined(Q_OS_WINCE)
47#include <shlobj.h>
48#include "qguifunctions_wince.h"
49#endif
50
51QT_BEGIN_NAMESPACE
52
53QOleEnumFmtEtc::QOleEnumFmtEtc(const QVector<FORMATETC> &fmtetcs)
54{
55 m_isNull = false;
56 m_dwRefs = 1;
57 m_nIndex = 0;
58
59 for (int idx = 0; idx < fmtetcs.count(); ++idx) {
60 LPFORMATETC destetc = new FORMATETC();
61 if (copyFormatEtc(destetc, (LPFORMATETC)&(fmtetcs.at(idx)))) {
62 m_lpfmtetcs.append(destetc);
63 } else {
64 m_isNull = true;
65 delete destetc;
66 break;
67 }
68 }
69}
70
71QOleEnumFmtEtc::QOleEnumFmtEtc(const QVector<LPFORMATETC> &lpfmtetcs)
72{
73 m_isNull = false;
74 m_dwRefs = 1;
75 m_nIndex = 0;
76
77 for (int idx = 0; idx < lpfmtetcs.count(); ++idx) {
78 LPFORMATETC srcetc = lpfmtetcs.at(idx);
79 LPFORMATETC destetc = new FORMATETC();
80 if (copyFormatEtc(destetc, srcetc)) {
81 m_lpfmtetcs.append(destetc);
82 } else {
83 m_isNull = true;
84 delete destetc;
85 break;
86 }
87 }
88}
89
90QOleEnumFmtEtc::~QOleEnumFmtEtc()
91{
92 LPMALLOC pmalloc;
93
94#if !defined(Q_OS_WINCE)
95 if (CoGetMalloc(MEMCTX_TASK, &pmalloc) == NOERROR) {
96#else
97 if (SHGetMalloc(&pmalloc) == NOERROR) {
98#endif
99 for (int idx = 0; idx < m_lpfmtetcs.count(); ++idx) {
100 LPFORMATETC tmpetc = m_lpfmtetcs.at(idx);
101 if (tmpetc->ptd)
102 pmalloc->Free(tmpetc->ptd);
103 delete tmpetc;
104 }
105
106 pmalloc->Release();
107 }
108 m_lpfmtetcs.clear();
109}
110
111bool QOleEnumFmtEtc::isNull() const
112{
113 return m_isNull;
114}
115
116// IUnknown methods
117STDMETHODIMP
118QOleEnumFmtEtc::QueryInterface(REFIID riid, void FAR* FAR* ppvObj)
119{
120 if (riid == IID_IUnknown || riid == IID_IEnumFORMATETC) {
121 *ppvObj = this;
122 AddRef();
123 return NOERROR;
124 }
125 *ppvObj = NULL;
126 return ResultFromScode(E_NOINTERFACE);
127}
128
129STDMETHODIMP_(ULONG)
130QOleEnumFmtEtc::AddRef(void)
131{
132 return ++m_dwRefs;
133}
134
135STDMETHODIMP_(ULONG)
136QOleEnumFmtEtc::Release(void)
137{
138 if (--m_dwRefs == 0) {
139 delete this;
140 return 0;
141 }
142 return m_dwRefs;
143}
144
145// IEnumFORMATETC methods
146STDMETHODIMP
147QOleEnumFmtEtc::Next(ULONG celt, LPFORMATETC rgelt, ULONG FAR* pceltFetched)
148{
149 ULONG i=0;
150 ULONG nOffset;
151
152 if (rgelt == NULL)
153 return ResultFromScode(E_INVALIDARG);
154
155 while (i < celt) {
156 nOffset = m_nIndex + i;
157
158 if (nOffset < ULONG(m_lpfmtetcs.count())) {
159 copyFormatEtc((LPFORMATETC)&(rgelt[i]), m_lpfmtetcs.at(nOffset));
160 i++;
161 } else {
162 break;
163 }
164 }
165
166 m_nIndex += (WORD)i;
167
168 if (pceltFetched != NULL)
169 *pceltFetched = i;
170
171 if (i != celt)
172 return ResultFromScode(S_FALSE);
173
174 return NOERROR;
175}
176
177STDMETHODIMP
178QOleEnumFmtEtc::Skip(ULONG celt)
179{
180 ULONG i=0;
181 ULONG nOffset;
182
183 while (i < celt) {
184 nOffset = m_nIndex + i;
185
186 if (nOffset < ULONG(m_lpfmtetcs.count())) {
187 i++;
188 } else {
189 break;
190 }
191 }
192
193 m_nIndex += (WORD)i;
194
195 if (i != celt)
196 return ResultFromScode(S_FALSE);
197
198 return NOERROR;
199}
200
201STDMETHODIMP
202QOleEnumFmtEtc::Reset()
203{
204 m_nIndex = 0;
205 return NOERROR;
206}
207
208STDMETHODIMP
209QOleEnumFmtEtc::Clone(LPENUMFORMATETC FAR* newEnum)
210{
211 if (newEnum == NULL)
212 return ResultFromScode(E_INVALIDARG);
213
214 QOleEnumFmtEtc *result = new QOleEnumFmtEtc(m_lpfmtetcs);
215 result->m_nIndex = m_nIndex;
216
217 if (result->isNull()) {
218 delete result;
219 return ResultFromScode(E_OUTOFMEMORY);
220 } else {
221 *newEnum = result;
222 }
223
224 return NOERROR;
225}
226
227bool QOleEnumFmtEtc::copyFormatEtc(LPFORMATETC dest, LPFORMATETC src) const
228{
229 if (dest == NULL || src == NULL)
230 return false;
231
232 *dest = *src;
233
234 if (src->ptd) {
235 LPVOID pout;
236 LPMALLOC pmalloc;
237
238#if !defined(Q_OS_WINCE)
239 if (CoGetMalloc(MEMCTX_TASK, &pmalloc) != NOERROR)
240#else
241 if (SHGetMalloc(&pmalloc) != NOERROR)
242#endif
243 return false;
244
245 pout = (LPVOID)pmalloc->Alloc(src->ptd->tdSize);
246 memcpy(dest->ptd, src->ptd, size_t(src->ptd->tdSize));
247
248 pmalloc->Release();
249 }
250
251 return true;
252}
253
254QT_END_NAMESPACE
255#endif // QT_NO_DRAGANDDROP && QT_NO_CLIPBOARD
Note: See TracBrowser for help on using the repository browser.