qcolumnviewgrip.cpp

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

2 ** -

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

5 ** -

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

7 ** -

8 ** $QT_BEGIN_LICENSE:LGPL21$ -

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 http://www.qt.io/terms-conditions. For further -

15 ** information use the contact form at http://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 2.1 or version 3 as published by the Free -

20 ** Software Foundation and appearing in the file LICENSE.LGPLv21 and -

21 ** LICENSE.LGPLv3 included in the packaging of this file. Please review the -

22 ** following information to ensure the GNU Lesser General Public License -

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

24 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -

25 ** -

26 ** As a special exception, The Qt Company gives you certain additional -

27 ** rights. These rights are described in The Qt Company LGPL Exception -

28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -

29 ** -

30 ** $QT_END_LICENSE$ -

31 ** -

32 ****************************************************************************/ -

33 -

34 #ifndef QT_NO_QCOLUMNVIEW -

35 -

36 #include "qcolumnviewgrip_p.h" -

37 #include <qstyleoption.h> -

38 #include <qpainter.h> -

39 #include <qbrush.h> -

40 #include <qevent.h> -

41 #include <qdebug.h> -

42 -

43 QT_BEGIN_NAMESPACE -

44 -

45 /* -

46 \internal -

47 class QColumnViewGrip -

48 -

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

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

51 */ -

52 -

53 /* -

54 \internal -

55 \fn void QColumnViewGrip::gripMoved() -

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

57 */ -

58 -

59 /*! -

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

61 Use setModel() to set the model. -

62 */ -

63 QColumnViewGrip::QColumnViewGrip(QWidget *parent) -

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

65 { -

66 #ifndef QT_NO_CURSOR -

67 setCursor(Qt::SplitHCursor); -

68 #endif -

}

never executed: end of block

70 -

71 /*! -

72 \internal -

73 */ -

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

75 : QWidget(dd, parent, f) -

76 { -

}

never executed: end of block

78 -

79 /*! -

80 Destroys the view. -

81 */ -

82 QColumnViewGrip::~QColumnViewGrip() -

83 { -

84 } -

85 -

86 /*! -

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

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

89 */ -

90 int QColumnViewGrip::moveGrip(int offset) -

91 { -

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

93 -

94 // first resize the parent -

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

96 int newWidth = oldWidth; -

if (isRightToLeft())

isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

newWidth -= offset;

never executed: newWidth -= offset;

99 else -

100

newWidth += offset;

never executed: newWidth += offset;

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

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

103 -

104 // Then have the view move the widget -

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

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

107

if (realOffset != 0)

realOffset != 0	Description
TRUE	never evaluated
FALSE	never evaluated

108

emit gripMoved(realOffset);

never executed: gripMoved(realOffset);

109

if (isRightToLeft())

isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

110

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

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

111

return realOffset;

never executed: return realOffset;

112 } -

113 -

114 /*! -

115 \reimp -

116 */ -

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

118 { -

119 QPainter painter(this); -

120 QStyleOption opt; -

121 opt.initFrom(this); -

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

123 event->accept(); -

124

}

never executed: end of block

125 -

126 /*! -

127 \reimp -

128 Resize the parent window to the sizeHint -

129 */ -

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

131 { -

132 Q_UNUSED(event); -

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

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

135

if (isRightToLeft())

isRightToLeft()	Description
TRUE	never evaluated
FALSE	never evaluated

136

offset *= -1;

never executed: offset *= -1;

137 moveGrip(offset); -

138 event->accept(); -

139

}

never executed: end of block

140 -

141 /*! -

142 \reimp -

143 Begin watching for mouse movements -

144 */ -

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

146 { -

147 Q_D(QColumnViewGrip); -

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

149 event->accept(); -

150

}

never executed: end of block

151 -

152 /*! -

153 \reimp -

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

155 */ -

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

157 { -

158 Q_D(QColumnViewGrip); -

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

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

161 event->accept(); -

162

}

never executed: end of block

163 -

164 /*! -

165 \reimp -

166 Stop watching for mouse movements -

167 */ -

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

169 { -

170 Q_D(QColumnViewGrip); -

171 d->originalXLocation = -1; -

172 event->accept(); -

173

}

never executed: end of block

174 -

175 /* -

176 * private object implementation -

177 */ -

178 QColumnViewGripPrivate::QColumnViewGripPrivate() -

179 : QWidgetPrivate(), -

180 originalXLocation(-1) -

181 { -

182

}

never executed: end of block

183 -

184 QT_END_NAMESPACE -

185 -

186 #include "moc_qcolumnviewgrip_p.cpp" -

187 -

188 #endif // QT_NO_QCOLUMNVIEW -

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