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50
51 #include "objects.h"
52 #include <QLayout>
53 #include <QPainter>
54
55 /* Implementation of QParentWidget */
56 //! [0]
QParentWidget(QWidget * parent)57 QParentWidget::QParentWidget(QWidget *parent)
58 : QWidget(parent),
59 m_vbox(new QVBoxLayout(this))
60 {
61 }
62
63 //! [0] //! [1]
createSubWidget(const QString & name)64 void QParentWidget::createSubWidget(const QString &name)
65 {
66 QSubWidget *sw = new QSubWidget(this, name);
67 m_vbox->addWidget(sw);
68 sw->setLabel(name);
69 sw->show();
70 }
71
72 //! [1] //! [2]
subWidget(const QString & name)73 QSubWidget *QParentWidget::subWidget(const QString &name)
74 {
75 return findChild<QSubWidget *>(name);
76 }
77
78 //! [2]
sizeHint() const79 QSize QParentWidget::sizeHint() const
80 {
81 return QWidget::sizeHint().expandedTo(QSize(100, 100));
82 }
83
84 /* Implementation of QSubWidget */
85 //! [3]
QSubWidget(QWidget * parent,const QString & name)86 QSubWidget::QSubWidget(QWidget *parent, const QString &name)
87 : QWidget(parent)
88 {
89 setObjectName(name);
90 }
91
setLabel(const QString & text)92 void QSubWidget::setLabel(const QString &text)
93 {
94 m_label = text;
95 setObjectName(text);
96 update();
97 }
98
label() const99 QString QSubWidget::label() const
100 {
101 return m_label;
102 }
103
sizeHint() const104 QSize QSubWidget::sizeHint() const
105 {
106 QFontMetrics fm(font());
107 return QSize(fm.horizontalAdvance(m_label), fm.height());
108 }
109
paintEvent(QPaintEvent *)110 void QSubWidget::paintEvent(QPaintEvent *)
111 {
112 QPainter painter(this);
113 painter.setPen(palette().text().color());
114 painter.drawText(rect(), Qt::AlignCenter, m_label);
115 //! [3] //! [4]
116 }
117 //! [4]
118