Added a new widget 'MinMaxAvgWidget'

Added a new widget, MinMaxAvgWidget, a simple widget
that displays values in 'min, max, avg' fashion.
it has a setMaximum, setAverage and setMinimum
methods, that is userful for setting the minimum,
maximum and average of stuff. Ah, it also shows
the minimum, maximum and average of things.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>

qt-ui/simplewidgets.cpp

@@ -0,0 +1,92 @@
+#include "simplewidgets.h"
+
+#include <QLabel>
+#include <QLabel>
+#include <QFormLayout>
+#include <QIcon>
+
+class MinMaxAvgWidgetPrivate{
+public:
+	QLabel *avgIco, *avgValue;
+	QLabel *minIco, *minValue;
+	QLabel *maxIco, *maxValue;
+
+	MinMaxAvgWidgetPrivate(MinMaxAvgWidget *owner){
+		avgIco = new QLabel(owner);
+		avgIco->setPixmap(QIcon(":/average").pixmap(16,16));
+		avgIco->setToolTip(QObject::tr("Average"));
+		minIco = new QLabel(owner);
+		minIco->setPixmap(QIcon(":/minimum").pixmap(16,16));
+		minIco->setToolTip(QObject::tr("Minimum"));
+		maxIco = new QLabel(owner);
+		maxIco->setPixmap(QIcon(":/maximum").pixmap(16,16));
+		maxIco->setToolTip(QObject::tr("Maximum"));
+		avgValue = new QLabel(owner);
+		minValue = new QLabel(owner);
+		maxValue = new QLabel(owner);
+		
+		QGridLayout *formLayout = new QGridLayout();
+		formLayout->addWidget(maxIco, 0, 0);
+		formLayout->addWidget(maxValue, 0, 1);
+		formLayout->addWidget(avgIco, 1, 0);
+		formLayout->addWidget(avgValue, 1, 1);
+		formLayout->addWidget(minIco, 2, 0);
+		formLayout->addWidget(minValue, 2, 1);
+		owner->setLayout(formLayout);
+	}
+};
+
+double MinMaxAvgWidget::average() const
+{
+	return d->avgValue->text().toDouble();
+}
+
+double MinMaxAvgWidget::maximum() const
+{
+	return d->maxValue->text().toDouble();
+}
+double MinMaxAvgWidget::minimum() const
+{
+	return d->minValue->text().toDouble();
+}
+
+MinMaxAvgWidget::MinMaxAvgWidget(QWidget* parent)
+: d(new MinMaxAvgWidgetPrivate(this)){
+
+}
+
+void MinMaxAvgWidget::clear()
+{
+	d->avgValue->setText(QString());
+	d->maxValue->setText(QString());
+	d->minValue->setText(QString());
+}
+
+void MinMaxAvgWidget::setAverage(double average)
+{
+	d->avgValue->setText(QString::number(average));
+}
+
+void MinMaxAvgWidget::setMaximum(double maximum)
+{
+	d->maxValue->setText(QString::number(maximum));
+}
+void MinMaxAvgWidget::setMinimum(double minimum)
+{
+	d->minValue->setText(QString::number(minimum));
+}
+
+void MinMaxAvgWidget::setAverage(const QString& average)
+{
+	d->avgValue->setText(average);
+}
+
+void MinMaxAvgWidget::setMaximum(const QString& maximum)
+{
+	d->maxValue->setText(maximum);
+}
+
+void MinMaxAvgWidget::setMinimum(const QString& minimum)
+{
+	d->minValue->setText(minimum);
+}