qt5base-lts/tests/manual/qscreen/propertyfield.cpp
Alexander Volkov 095abb1925 QScreen manual test: fix conversion of enum values to names
Use the correct method of QMetaEnum to convert enum values to names.
QMetaEnum::valueToKey() should be used, because it takes an enum value
as an argument, while QMetaEnum::key() takes an index of the enum value.

Change-Id: Ie895fcc935e8835e3d9c416ca34be8bfe82fd74e
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
2016-08-25 14:06:51 +00:00

106 lines
3.9 KiB
C++

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** This file is part of the test suite of the Qt Toolkit.
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#include "propertyfield.h"
#include <QDebug>
PropertyField::PropertyField(QObject* subject, const QMetaProperty& prop, QWidget *parent)
: QLineEdit(parent), m_subject(subject), m_lastChangeTime(QTime::currentTime()), m_prop(prop)
, m_defaultBrush(palette().brush(QPalette::Active, QPalette::Text))
{
setReadOnly(true);
if (prop.hasNotifySignal()) {
QMetaMethod signal = prop.notifySignal();
QMetaMethod updateSlot = metaObject()->method(metaObject()->indexOfSlot("propertyChanged()"));
connect(m_subject, signal, this, updateSlot);
}
propertyChanged();
}
QString PropertyField::valueToString(QVariant val)
{
if (m_prop.isEnumType())
return QString::fromUtf8(m_prop.enumerator().valueToKey(val.toInt()));
QString text;
switch (val.type()) {
case QVariant::Double:
text = QString("%1").arg(val.toReal(), 0, 'f', 4);
break;
case QVariant::Size:
text = QString("%1 x %2").arg(val.toSize().width()).arg(val.toSize().height());
break;
case QVariant::SizeF:
text = QString("%1 x %2").arg(val.toSizeF().width()).arg(val.toSizeF().height());
break;
case QVariant::Rect: {
QRect rect = val.toRect();
text = QString("%1 x %2 %3%4 %5%6").arg(rect.width())
.arg(rect.height()).arg(rect.x() < 0 ? "" : "+").arg(rect.x())
.arg(rect.y() < 0 ? "" : "+").arg(rect.y());
} break;
default:
text = val.toString();
}
return text;
}
void PropertyField::propertyChanged()
{
if (m_prop.isReadable()) {
QVariant val = m_prop.read(m_subject);
QString text = valueToString(val);
QPalette modPalette = palette();
// If we are seeing a value for the first time,
// pretend it was that way for a while already.
if (m_lastText.isEmpty()) {
m_lastText = text;
m_lastTextShowing = text;
m_lastChangeTime = QTime::currentTime().addSecs(-5);
}
qDebug() << " " << QString::fromUtf8(m_prop.name()) << ':' << val;
// If the value has recently changed, show the change
if (text != m_lastText || m_lastChangeTime.elapsed() < 1000) {
setText(m_lastTextShowing + " -> " + text);
modPalette.setBrush(QPalette::Text, Qt::red);
m_lastChangeTime.start();
m_lastText = text;
}
// If the value hasn't changed recently, just show the current value
else {
setText(text);
m_lastText = text;
m_lastTextShowing = text;
modPalette.setBrush(QPalette::Text, m_defaultBrush);
}
setPalette(modPalette);
}
}