用于在 JQplot 中悬停/选择点的键盘事件
有没有办法将键盘事件绑定到jqPlot
?我试图仅使用左右箭头键将鼠标悬停在绘图上的点上。每个点也应该突出显示。
我知道有一些方法可以单击,双击等。
$('#chart1').bind('jqplotClick', function(ev, gridpos, datapos, neighbor) {
if (neighbor) {
}
});
我还实现了shift单击。
$('#chart1').bind('jqplotShiftClick', function(ev, gridpos, datapos, neighbor) {
if (neighbor) {
}
});
定义:
this.onClick = function(ev) {
// Event passed in is normalized and will have data attribute.
// Event passed out is unnormalized.
if (ev.shiftKey) {
var positions = getEventPosition(ev);
var p = ev.data.plot;
var neighbor = checkIntersection(positions.gridPos, p);
var evt = jQuery.Event('jqplotShiftClick');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
$(this).trigger(evt, [positions.gridPos, positions.dataPos, neighbor, p]);
} else {
var positions = getEventPosition(ev);
var p = ev.data.plot;
var neighbor = checkIntersection(positions.gridPos, p);
var evt = jQuery.Event('jqplotClick');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
$(this).trigger(evt, [positions.gridPos, positions.dataPos, neighbor, p]);
}
};
但在所有这些中,都涉及到点击。我希望能够在不实际选择点的情况下产生相同的效果。
如果您有任何想法,请告诉我。
Is there a way to bind keyboard events to jqPlot
? I am trying to hover through the points on a plot using only the left and right arrow keys. Also each point should highlight.
I know there are ways to click, double click etc.
$('#chart1').bind('jqplotClick', function(ev, gridpos, datapos, neighbor) {
if (neighbor) {
}
});
I have also implemented shift click.
$('#chart1').bind('jqplotShiftClick', function(ev, gridpos, datapos, neighbor) {
if (neighbor) {
}
});
definition:
this.onClick = function(ev) {
// Event passed in is normalized and will have data attribute.
// Event passed out is unnormalized.
if (ev.shiftKey) {
var positions = getEventPosition(ev);
var p = ev.data.plot;
var neighbor = checkIntersection(positions.gridPos, p);
var evt = jQuery.Event('jqplotShiftClick');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
$(this).trigger(evt, [positions.gridPos, positions.dataPos, neighbor, p]);
} else {
var positions = getEventPosition(ev);
var p = ev.data.plot;
var neighbor = checkIntersection(positions.gridPos, p);
var evt = jQuery.Event('jqplotClick');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
$(this).trigger(evt, [positions.gridPos, positions.dataPos, neighbor, p]);
}
};
But in all these, there is a click involved. I want to be able to produce the same effect without actually selecting the point.
Please let me know if you have any ideas.
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我能想到的唯一方法是将
keydown
或keypress
事件附加/绑定到文档本身,并相应地对按键操作进行操作。这已合并到此处提供的示例中。
不要忘记在结果框架内单击以使用键盘.
The only way I can think of is to attach/bind the event of
keydown
orkeypress
to the document itself and act upon a key action accordingly.This was incorporated into the sample available here.
Do not forget to click inside the Result frame in order to use keyboard.