[英]How to set style in fabric.js
VINET,
只需添加事件mouse:over和mouse:out
canvas.on('mouse:over', function(e){
if (e.target.type == 'rect'){
e.target.set({strokeWidth: 5, stroke: 'red'});
}
canvas.renderAll();
});
canvas.on('mouse:out', function(e){
canvas.forEachObject(function(o){
o.set({strokeWidth: 0});
});
canvas.renderAll();
});
检查小提琴
更新:
如果要分别突出显示每一侧,则必须为矩形创建自己的笔触,如下所示:
function createPointsForLines(rectangle){
let points = [];;
var coordinates = rectangle.oCoords;
points.push([coordinates.tl.x,
coordinates.tl.y,
coordinates.tr.x,
coordinates.tr.y]);
points.push([coordinates.tr.x,
coordinates.tr.y,
coordinates.br.x,
coordinates.br.y]);
points.push([coordinates.br.x,
coordinates.br.y,
coordinates.bl.x,
coordinates.bl.y]);
points.push([coordinates.bl.x,
coordinates.bl.y,
coordinates.tl.x,
coordinates.tl.y]);
return points;
}
之后,将这些笔划绘制为线条:
for (var i in points){
var line = new fabric.Line(points[i],{
originX: 'center',
originY: 'center',
strokeWidth: 10,
stroke: 'rgba(255,0,0,0)',
transparentCorners: false
});
canvas.add(line);
}
更新的小提琴
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