C++ Qt QXYSeries和图表视图-修改悬停行为以在一定范围内触发
我有一个由QXYSeries表示的散点图,并使用QtCharts 5.7中的图表视图进行查看 我想将鼠标悬停在绘图上,将触发器“悬停”在一定距离内,而不是仅当光标直接位于点的顶部时。想象一下鼠标周围有一个圆圈,只要鼠标内有任何部分,鼠标就会触发悬停C++ Qt QXYSeries和图表视图-修改悬停行为以在一定范围内触发,c++,qt,qtcharts,C++,Qt,Qtcharts,我有一个由QXYSeries表示的散点图,并使用QtCharts 5.7中的图表视图进行查看 我想将鼠标悬停在绘图上,将触发器“悬停”在一定距离内,而不是仅当光标直接位于点的顶部时。想象一下鼠标周围有一个圆圈,只要鼠标内有任何部分,鼠标就会触发悬停 有没有办法获得这种行为?最终,我通过创建一个继承自QChartView的类并重写mouseMoveEvent(QMouseEvent*event)从而获得了这种行为: void ScatterView::mouseMoveEvent(QMouseEv
有没有办法获得这种行为?最终,我通过创建一个继承自QChartView的类并重写
mouseMoveEvent(QMouseEvent*event)
从而获得了这种行为:
void ScatterView::mouseMoveEvent(QMouseEvent* event)
{
if(!this->chart()->axisX() || !this->chart()->axisY())
{
return;
}
QPointF inPoint;
QPointF chartPoint;
inPoint.setX(event->x());
inPoint.setY(event->y());
chartPoint = chart()->mapToValue(inPoint);
handleMouseMoved(chartPoint);
}
void ScatterView::handleMouseMoved(const QPointF &point)
{
QPointF mousePoint = point;
qreal distance(0.2); //distance from mouse to point in chart axes
foreach (QPointF currentPoint, scatterSeries->points()) {
qreal currentDistance = qSqrt((currentPoint.x() - mousePoint.x())
* (currentPoint.x() - mousePoint.x())
+ (currentPoint.y() - mousePoint.y())
* (currentPoint.y() - mousePoint.y()));
if (currentDistance < distance) {
triggerPoint(currentPoint);
}
}
}
void ScatterView::mouseMoveEvent(QMouseEvent*event)
{
如果(!this->chart()->axisX()| |!this->chart()->axisY())
{
返回;
}
QPointF-inPoint;
QPointF chartPoint;
setX(事件->x());
setY(事件->y());
chartPoint=chart()->mapToValue(输入点);
移动手提箱(chartPoint);
}
无效散点视图::移动了把手(常数点和点)
{
QPointF鼠标点=点;
qreal距离(0.2);//鼠标到图表轴上点的距离
foreach(QPointF currentPoint,scatterSeries->points()){
qreal currentDistance=qSqrt((currentPoint.x()-mousePoint.x())
*(currentPoint.x()-mousePoint.x())
+(currentPoint.y()-mousePoint.y())
*(currentPoint.y()-mousePoint.y());
如果(当前距离<距离){
触发点(currentPoint);
}
}
}
最终,我通过创建一个继承自QChartView的类并重写mouseMoveEvent(QMouseEvent*event)
从而实现了这种行为:
void ScatterView::mouseMoveEvent(QMouseEvent* event)
{
if(!this->chart()->axisX() || !this->chart()->axisY())
{
return;
}
QPointF inPoint;
QPointF chartPoint;
inPoint.setX(event->x());
inPoint.setY(event->y());
chartPoint = chart()->mapToValue(inPoint);
handleMouseMoved(chartPoint);
}
void ScatterView::handleMouseMoved(const QPointF &point)
{
QPointF mousePoint = point;
qreal distance(0.2); //distance from mouse to point in chart axes
foreach (QPointF currentPoint, scatterSeries->points()) {
qreal currentDistance = qSqrt((currentPoint.x() - mousePoint.x())
* (currentPoint.x() - mousePoint.x())
+ (currentPoint.y() - mousePoint.y())
* (currentPoint.y() - mousePoint.y()));
if (currentDistance < distance) {
triggerPoint(currentPoint);
}
}
}
void ScatterView::mouseMoveEvent(QMouseEvent*event)
{
如果(!this->chart()->axisX()| |!this->chart()->axisY())
{
返回;
}
QPointF-inPoint;
QPointF chartPoint;
setX(事件->x());
setY(事件->y());
chartPoint=chart()->mapToValue(输入点);
移动手提箱(chartPoint);
}
无效散点视图::移动了把手(常数点和点)
{
QPointF鼠标点=点;
qreal距离(0.2);//鼠标到图表轴上点的距离
foreach(QPointF currentPoint,scatterSeries->points()){
qreal currentDistance=qSqrt((currentPoint.x()-mousePoint.x())
*(currentPoint.x()-mousePoint.x())
+(currentPoint.y()-mousePoint.y())
*(currentPoint.y()-mousePoint.y());
如果(当前距离<距离){
触发点(currentPoint);
}
}
}