Added position date display option

Closes #330

src/GUI/markerinfoitem.cpp

@@ -0,0 +1,73 @@
+#include <QPainter>
+#include <QDateTime>
+#include <QLocale>
+#include "font.h"
+#include "markerinfoitem.h"
+
+
+#define OFFSET 7
+
+MarkerInfoItem::MarkerInfoItem(QGraphicsItem *parent) : QGraphicsItem(parent)
+{
+	_color = Qt::red;
+
+	_font.setPixelSize(FONT_SIZE);
+	_font.setFamily(FONT_FAMILY);
+}
+
+void MarkerInfoItem::setDate(const QDateTime &date)
+{
+	prepareGeometryChange();
+
+	QLocale l;
+	_date = l.toString(date.date(), QLocale::ShortFormat);
+	_time = l.toString(date.time(), QLocale::ShortFormat);
+
+	updateBoundingRect();
+}
+
+void MarkerInfoItem::updateBoundingRect()
+{
+	QFontMetrics fm(_font);
+
+	qreal width = qMax(fm.boundingRect(_date).width(),
+	  fm.boundingRect(_time).width());
+	qreal height = 2 * fm.height() - 2*fm.descent();
+
+	_boundingRect = QRectF(-OFFSET/2, -height/2, width + 1.5*OFFSET, height);
+}
+
+void MarkerInfoItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
+  *option, QWidget *widget)
+{
+	Q_UNUSED(option);
+	Q_UNUSED(widget);
+
+	QFontMetrics fm(_font);
+	QRectF ry(OFFSET, -fm.height() + fm.descent(),
+	  fm.boundingRect(_time).width(), fm.height() - fm.descent());
+	QRectF rx(OFFSET, 0, fm.boundingRect(_date).width(), fm.height()
+	  - fm.descent());
+
+	painter->setPen(Qt::NoPen);
+	QColor bc(painter->background().color());
+	bc.setAlpha(196);
+	painter->setBrush(QBrush(bc));
+	painter->drawRect(ry);
+	painter->drawRect(rx);
+	painter->setBrush(Qt::NoBrush);
+
+	painter->setFont(_font);
+	painter->setPen(_color);
+
+	painter->drawText(OFFSET, -fm.descent()/2, _date);
+	painter->drawText(OFFSET, fm.height() - fm.descent()*1.5, _time);
+
+	//painter->drawRect(boundingRect());
+}
+
+void MarkerInfoItem::setColor(const QColor &color)
+{
+	_color = color;
+	update();
+}