小编Ian*_*Ian的帖子

在fabricjs中,我想创建一个场景,其中鼠标下的对象在z-index中上升到场景的顶部,然后一旦鼠标离开该对象,它就会返回到它所来自的z-index.一个人不能设置object.zindex(这会很好).相反,我使用的占位符对象放在旧位置的对象列表中,然后使用canvas.insertAt将旧对象放回到列表中的位置.但这不起作用.

请参阅http://jsfiddle.net/rFSEV/了解其状态.

var canvasS = new fabric.Canvas('canvasS', { renderOnAddition: false, hoverCursor: 'pointer', selection: false });
var bars = {}; //storage for bars (bar number indexed by group object)
var selectedBar = null; //selected bar (group object)
var placeholder = new fabric.Text("XXXXX", { fontSize: 12 });

//pass null or a bar
function selectBar(bar) {
    if (selectedBar) {
        //remove the old topmost bar and put it back in the right zindex
        //PROBLEM: It doesn't go back; it stays at the …