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qcolumnviewgrip.cpp

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/home/qt/qt5_coco/qt5/qtbase/src/widgets/itemviews/qcolumnviewgrip.cpp

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

2 ** -

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

5 ** -

6 ** This file is part of the QtWidgets 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 #ifndef QT_NO_QCOLUMNVIEW -

41 -

42 #include "qcolumnviewgrip_p.h" -

43 #include <qstyleoption.h> -

44 #include <qpainter.h> -

45 #include <qbrush.h> -

46 #include <qevent.h> -

47 #include <qdebug.h> -

48 -

49 QT_BEGIN_NAMESPACE -

50 -

51 /* -

52 \internal -

53 class QColumnViewGrip -

54 -

55 QColumnViewGrip is created to go inside QAbstractScrollArea's corner. -

56 When the mouse it moved it will resize the scroll area and emit's a signal. -

57 */ -

58 -

59 /* -

60 \internal -

61 \fn void QColumnViewGrip::gripMoved() -

62 Signal that is emitted when the grip moves the parent widget. -

63 */ -

64 -

65 /*! -

66 Creates a new QColumnViewGrip with the given \a parent to view a model. -

67 Use setModel() to set the model. -

68 */ -

69 QColumnViewGrip::QColumnViewGrip(QWidget *parent) -

70 : QWidget(*new QColumnViewGripPrivate, parent, 0) -

71 { -

72 #ifndef QT_NO_CURSOR -

73 setCursor(Qt::SplitHCursor); -

74 #endif -

}

never executed: end of block

76 -

77 /*! -

78 \internal -

79 */ -

80 QColumnViewGrip::QColumnViewGrip(QColumnViewGripPrivate & dd, QWidget *parent, Qt::WindowFlags f) -

81 : QWidget(dd, parent, f) -

82 { -

}

never executed: end of block

84 -

85 /*! -

86 Destroys the view. -

87 */ -

88 QColumnViewGrip::~QColumnViewGrip() -

89 { -

90 } -

91 -

92 /*! -

93 Attempt to resize the parent object by \a offset -

94 returns the amount of offset that it was actually able to resized -

95 */ -

96 int QColumnViewGrip::moveGrip(int offset) -

97 { -

98 QWidget *parentWidget = (QWidget*)parent(); -

99 -

100 // first resize the parent -

101 int oldWidth = parentWidget->width(); -

102 int newWidth = oldWidth; -

103

if (isRightToLeft())

isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

104

newWidth -= offset;

never executed: newWidth -= offset;

105 else -

106

newWidth += offset;

never executed: newWidth += offset;

107 newWidth = qMax(parentWidget->minimumWidth(), newWidth); -

108 parentWidget->resize(newWidth, parentWidget->height()); -

109 -

110 // Then have the view move the widget -

111 int realOffset = parentWidget->width() - oldWidth; -

112 int oldX = parentWidget->x(); -

113

if (realOffset != 0)

realOffset != 0	Description
TRUE	never evaluated
FALSE	never evaluated

114

emit gripMoved(realOffset);

never executed: gripMoved(realOffset);

115

if (isRightToLeft())

isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

116

realOffset = -1 * (oldX - parentWidget->x());

never executed: realOffset = -1 * (oldX - parentWidget->x());

117

return realOffset;

never executed: return realOffset;

118 } -

119 -

120 /*! -

121 \reimp -

122 */ -

123 void QColumnViewGrip::paintEvent(QPaintEvent *event) -

124 { -

125 QPainter painter(this); -

126 QStyleOption opt; -

127 opt.initFrom(this); -

128 style()->drawControl(QStyle::CE_ColumnViewGrip, &opt, &painter, this); -

129 event->accept(); -

130

}

never executed: end of block

131 -

132 /*! -

133 \reimp -

134 Resize the parent window to the sizeHint -

135 */ -

136 void QColumnViewGrip::mouseDoubleClickEvent(QMouseEvent *event) -

137 { -

138 Q_UNUSED(event); -

139 QWidget *parentWidget = (QWidget*)parent(); -

140 int offset = parentWidget->sizeHint().width() - parentWidget->width(); -

141

if (isRightToLeft())

isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

142

offset *= -1;

never executed: offset *= -1;

143 moveGrip(offset); -

144 event->accept(); -

145

}

never executed: end of block

146 -

147 /*! -

148 \reimp -

149 Begin watching for mouse movements -

150 */ -

151 void QColumnViewGrip::mousePressEvent(QMouseEvent *event) -

152 { -

153 Q_D(QColumnViewGrip); -

154 d->originalXLocation = event->globalX(); -

155 event->accept(); -

156

}

never executed: end of block

157 -

158 /*! -

159 \reimp -

160 Calculate the movement of the grip and moveGrip() and emit gripMoved -

161 */ -

162 void QColumnViewGrip::mouseMoveEvent(QMouseEvent *event) -

163 { -

164 Q_D(QColumnViewGrip); -

165 int offset = event->globalX() - d->originalXLocation; -

166 d->originalXLocation = moveGrip(offset) + d->originalXLocation; -

167 event->accept(); -

168

}

never executed: end of block

169 -

170 /*! -

171 \reimp -

172 Stop watching for mouse movements -

173 */ -

174 void QColumnViewGrip::mouseReleaseEvent(QMouseEvent *event) -

175 { -

176 Q_D(QColumnViewGrip); -

177 d->originalXLocation = -1; -

178 event->accept(); -

179

}

never executed: end of block

180 -

181 /* -

182 * private object implementation -

183 */ -

184 QColumnViewGripPrivate::QColumnViewGripPrivate() -

185 : QWidgetPrivate(), -

186 originalXLocation(-1) -

187 { -

188

}

never executed: end of block

189 -

190 QT_END_NAMESPACE -

191 -

192 #include "moc_qcolumnviewgrip_p.cpp" -

193 -

194 #endif // QT_NO_QCOLUMNVIEW -

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