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