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46 lines
940 B
C++
46 lines
940 B
C++
#include <QPainter>
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#include "crosshairitem.h"
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#define SIZE 16
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#define WIDTH 2
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CrosshairItem::CrosshairItem(QGraphicsItem *parent) : QGraphicsItem(parent)
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{
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_color = Qt::red;
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_digitalZoom = 0;
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}
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QRectF CrosshairItem::boundingRect() const
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{
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return QRectF(-SIZE/2, -SIZE/2, SIZE, SIZE);
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}
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void CrosshairItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
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QWidget *widget)
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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painter->setRenderHint(QPainter::Antialiasing, false);
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painter->setPen(QPen(_color, WIDTH));
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painter->drawLine(-SIZE/2, 0, -SIZE/4, 0);
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painter->drawLine(SIZE/4, 0, SIZE/2, 0);
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painter->drawLine(0, -SIZE/2, 0, -SIZE/4);
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painter->drawLine(0, SIZE/4, 0, SIZE/2);
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//painter->drawRect(boundingRect());
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}
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void CrosshairItem::setDigitalZoom(qreal zoom)
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{
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_digitalZoom = zoom;
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setScale(pow(2, -_digitalZoom));
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}
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void CrosshairItem::setColor(const QColor &color)
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{
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_color = color;
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update();
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}
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