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qplatformdrag.cpp

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/home/qt/qt5_coco/qt5/qtbase/src/gui/kernel/qplatformdrag.cpp

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1 /**************************************************************************** -

2 ** -

4 ** Contact: https://www.qt.io/licensing/ -

5 ** -

6 ** This file is part of the QtGui module of the Qt Toolkit. -

7 ** -

8 ** $QT_BEGIN_LICENSE:LGPL$ -

9 ** Commercial License Usage -

10 ** Licensees holding valid commercial Qt licenses may use this file in -

11 ** accordance with the commercial license agreement provided with the -

12 ** Software or, alternatively, in accordance with the terms contained in -

13 ** a written agreement between you and The Qt Company. For licensing terms -

14 ** and conditions see https://www.qt.io/terms-conditions. For further -

15 ** information use the contact form at https://www.qt.io/contact-us. -

16 ** -

17 ** GNU Lesser General Public License Usage -

18 ** Alternatively, this file may be used under the terms of the GNU Lesser -

19 ** General Public License version 3 as published by the Free Software -

20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the -

21 ** packaging of this file. Please review the following information to -

22 ** ensure the GNU Lesser General Public License version 3 requirements -

23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -

24 ** -

25 ** GNU General Public License Usage -

26 ** Alternatively, this file may be used under the terms of the GNU -

27 ** General Public License version 2.0 or (at your option) the GNU General -

28 ** Public license version 3 or any later version approved by the KDE Free -

29 ** Qt Foundation. The licenses are as published by the Free Software -

30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -

31 ** included in the packaging of this file. Please review the following -

32 ** information to ensure the GNU General Public License requirements will -

33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and -

34 ** https://www.gnu.org/licenses/gpl-3.0.html. -

35 ** -

36 ** $QT_END_LICENSE$ -

37 ** -

38 ****************************************************************************/ -

39 -

40 #include "qplatformdrag.h" -

41 -

42 #include <QtGui/private/qdnd_p.h> -

43 #include <QtGui/QKeyEvent> -

44 #include <QtGui/QGuiApplication> -

45 #include <QtCore/QEventLoop> -

46 -

47 QT_BEGIN_NAMESPACE -

48 -

49 #ifndef QT_NO_DRAGANDDROP -

50 #ifdef QDND_DEBUG -

51 # include <QtCore/QDebug> -

52 #endif -

53 -

54 QPlatformDropQtResponse::QPlatformDropQtResponse(bool accepted, Qt::DropAction acceptedAction) -

55 : m_accepted(accepted) -

56 , m_accepted_action(acceptedAction) -

57 { -

}

never executed: end of block

59 -

60 bool QPlatformDropQtResponse::isAccepted() const -

61 { -

return m_accepted;

never executed: return m_accepted;

63 } -

64 -

65 Qt::DropAction QPlatformDropQtResponse::acceptedAction() const -

66 { -

return m_accepted_action;

never executed: return m_accepted_action;

68 } -

69 -

70 QPlatformDragQtResponse::QPlatformDragQtResponse(bool accepted, Qt::DropAction acceptedAction, QRect answerRect) -

71 : QPlatformDropQtResponse(accepted,acceptedAction) -

72 , m_answer_rect(answerRect) -

73 { -

}

never executed: end of block

75 -

76 QRect QPlatformDragQtResponse::answerRect() const -

77 { -

return m_answer_rect;

never executed: return m_answer_rect;

79 } -

80 -

81 class QPlatformDragPrivate { -

82 public: -

QPlatformDragPrivate() : cursor_drop_action(Qt::IgnoreAction) {}

never executed: end of block

84 -

85 Qt::DropAction cursor_drop_action; -

86 }; -

87 -

88 /*! -

89 \class QPlatformDrag -

90 \since 5.0 -

91 \internal -

92 \preliminary -

93 \ingroup qpa -

94 -

95 \brief The QPlatformDrag class provides an abstraction for drag. -

96 */ -

97 QPlatformDrag::QPlatformDrag() : d_ptr(new QPlatformDragPrivate) -

98 { -

}

never executed: end of block

100 -

101 QPlatformDrag::~QPlatformDrag() -

102 { -

103 delete d_ptr; -

104

}

never executed: end of block

105 -

106 QDrag *QPlatformDrag::currentDrag() const -

107 { -

108

return QDragManager::self()->object();

never executed: return QDragManager::self()->object();

109 } -

110 -

111 Qt::DropAction QPlatformDrag::defaultAction(Qt::DropActions possibleActions, -

112 Qt::KeyboardModifiers modifiers) const -

113 { -

114 #ifdef QDND_DEBUG -

115 qDebug() << "QDragManager::defaultAction(Qt::DropActions possibleActions)\nkeyboard modifiers : " << modifiers; -

116 #endif -

117 -

118 Qt::DropAction default_action = Qt::IgnoreAction; -

119 -

120

if (currentDrag()) {

currentDrag()	Description
TRUE	never evaluated
FALSE	never evaluated

121 default_action = currentDrag()->defaultAction(); -

122

}

never executed: end of block

123 -

124 -

125

if (default_action == Qt::IgnoreAction) {

default_action...::IgnoreAction	Description
TRUE	never evaluated
FALSE	never evaluated

126 //This means that the drag was initiated by QDrag::start and we need to -

127 //preserve the old behavior -

128 default_action = Qt::CopyAction; -

129

}

never executed: end of block

130 -

131

if (modifiers & Qt::ControlModifier && modifiers & Qt::ShiftModifier)

modifiers & Qt...ontrolModifier	Description
TRUE	never evaluated
FALSE	never evaluated

modifiers & Qt::ShiftModifier	Description
TRUE	never evaluated
FALSE	never evaluated

132

default_action = Qt::LinkAction;

never executed: default_action = Qt::LinkAction;

133

else if (modifiers & Qt::ControlModifier)

modifiers & Qt...ontrolModifier	Description
TRUE	never evaluated
FALSE	never evaluated

134

default_action = Qt::CopyAction;

never executed: default_action = Qt::CopyAction;

135

else if (modifiers & Qt::ShiftModifier)

modifiers & Qt::ShiftModifier	Description
TRUE	never evaluated
FALSE	never evaluated

136

default_action = Qt::MoveAction;

never executed: default_action = Qt::MoveAction;

137

else if (modifiers & Qt::AltModifier)

modifiers & Qt::AltModifier	Description
TRUE	never evaluated
FALSE	never evaluated

138

default_action = Qt::LinkAction;

never executed: default_action = Qt::LinkAction;

139 -

140 #ifdef QDND_DEBUG -

141 qDebug() << "possible actions : " << possibleActions; -

142 #endif -

143 -

144 // Check if the action determined is allowed -

145

if (!(possibleActions & default_action)) {

!(possibleActi...efault_action)	Description
TRUE	never evaluated
FALSE	never evaluated

146

if (possibleActions & Qt::CopyAction)

possibleAction...Qt::CopyAction	Description
TRUE	never evaluated
FALSE	never evaluated

147

default_action = Qt::CopyAction;

never executed: default_action = Qt::CopyAction;

148

else if (possibleActions & Qt::MoveAction)

possibleAction...Qt::MoveAction	Description
TRUE	never evaluated
FALSE	never evaluated

149

default_action = Qt::MoveAction;

never executed: default_action = Qt::MoveAction;

150

else if (possibleActions & Qt::LinkAction)

possibleAction...Qt::LinkAction	Description
TRUE	never evaluated
FALSE	never evaluated

151

default_action = Qt::LinkAction;

never executed: default_action = Qt::LinkAction;

152 else -

153

default_action = Qt::IgnoreAction;

never executed: default_action = Qt::IgnoreAction;

154 } -

155 -

156 #ifdef QDND_DEBUG -

157 qDebug() << "default action : " << default_action; -

158 #endif -

159 -

160

return default_action;

never executed: return default_action;

161 } -

162 -

163 /*! -

164 \brief Cancels the currently active drag (only for drags of -

165 the current application initiated by QPlatformDrag::drag()). -

166 -

167 The default implementation does nothing. -

168 -

169 \since 5.6 -

170 */ -

171 -

172 void QPlatformDrag::cancelDrag() -

173 { -

174 Q_UNIMPLEMENTED(); -

175

}

never executed: end of block

176 -

177 /*! -

178 \brief Called to notify QDrag about changes of the current action. -

179 */ -

180 -

181 void QPlatformDrag::updateAction(Qt::DropAction action) -

182 { -

183 Q_D(QPlatformDrag); -

184

if (d->cursor_drop_action != action) {

d->cursor_drop...tion != action	Description
TRUE	never evaluated
FALSE	never evaluated

185 d->cursor_drop_action = action; -

186 emit currentDrag()->actionChanged(action); -

187

}

never executed: end of block

188

}

never executed: end of block

189 -

190 static const char *const default_pm[] = { -

191 "13 9 3 1", -

192 ". c None", -

193 " c #000000", -

194 "X c #FFFFFF", -

195 "X X X X X X X", -

196 " X X X X X X ", -

197 "X ......... X", -

198 " X.........X ", -

199 "X ......... X", -

200 " X.........X ", -

201 "X ......... X", -

202 " X X X X X X ", -

203 "X X X X X X X", -

204 }; -

205 -

206

Q_GLOBAL_STATIC_WITH_ARGS(QPixmap,qt_drag_default_pixmap,(default_pm))

never executed: end of block

never executed: guard.store(QtGlobalStatic::Destroyed);

never executed: return &holder.value;

guard.load() =...c::Initialized	Description
TRUE	never evaluated
FALSE	never evaluated

207 -

208 QPixmap QPlatformDrag::defaultPixmap() -

209 { -

210

return *qt_drag_default_pixmap();

never executed: return *qt_drag_default_pixmap();

211 } -

212 -

213 /*! -

214 \since 5.4 -

215 \brief Returns bool indicating whether QPlatformDrag takes ownership -

216 and therefore responsibility of deleting the QDrag object passed in -

217 from QPlatformDrag::drag. This can be useful on platforms where QDrag -

218 object has to be kept around. -

219 */ -

220 bool QPlatformDrag::ownsDragObject() const -

221 { -

222

return false;

never executed: return false;

223 } -

224 -

225 #endif // QT_NO_DRAGANDDROP -

226 -

227 QT_END_NAMESPACE -

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