objects.cpp Example File

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#include "objects.h" #include <QLayout> #include <QPainter> /* Implementation of QParentWidget */ QParentWidget::QParentWidget(QWidget *parent) : QWidget(parent), m_vbox(new QVBoxLayout(this)) { } void QParentWidget::createSubWidget(const QString &name) { QSubWidget *sw = new QSubWidget(this, name); m_vbox->addWidget(sw); sw->setLabel(name); sw->show(); } QSubWidget *QParentWidget::subWidget(const QString &name) { return findChild<QSubWidget *>(name); } QSize QParentWidget::sizeHint() const { return QWidget::sizeHint().expandedTo(QSize(100, 100)); } /* Implementation of QSubWidget */ QSubWidget::QSubWidget(QWidget *parent, const QString &name) : QWidget(parent) { setObjectName(name); } void QSubWidget::setLabel(const QString &text) { m_label = text; setObjectName(text); update(); } QString QSubWidget::label() const { return m_label; } QSize QSubWidget::sizeHint() const { QFontMetrics fm(font()); return QSize(fm.width(m_label), fm.height()); } void QSubWidget::paintEvent(QPaintEvent *) { QPainter painter(this); painter.setPen(palette().text().color()); painter.drawText(rect(), Qt::AlignCenter, m_label); }