Javascript 将事件悬停在z索引较高的元素上?
我有一个画布元素(Javascript 将事件悬停在z索引较高的元素上?,javascript,jquery,html,css,canvas,Javascript,Jquery,Html,Css,Canvas,我有一个画布元素(canvas mouse),它横跨整个屏幕-它的目的是在鼠标周围画一个50%不透明度的圆圈,大小为一定的(grabsize)。页面上还有许多div中的图像。我希望这些图像可以点击/悬停,但我也希望画布鼠标中的50%不透明度圆圈出现在它们上面 有没有办法做到这一点 HTML: JavaScript: CanvasRenderingContext2D.prototype.drawCircle = function(xpos, ypos, radius, linewidth, lin
canvas mouse
),它横跨整个屏幕-它的目的是在鼠标周围画一个50%不透明度的圆圈,大小为一定的(grabsize
)。页面上还有许多div中的图像。我希望这些图像可以点击/悬停,但我也希望画布鼠标中的50%不透明度圆圈出现在它们上面
有没有办法做到这一点
HTML:
JavaScript:
CanvasRenderingContext2D.prototype.drawCircle = function(xpos, ypos, radius, linewidth, linecolor, fill) {
if(typeof(linewidth)==="undefined") {
linewidth = 1;
}
if(typeof(linecolor)==="undefined") {
linecolor = "#000000";
}
this.beginPath();
this.arc(xpos, ypos, radius, 0, 2*Math.PI, false);
this.lineWidth = linewidth;
if(typeof(fill)!=="undefined") {
this.fillStyle = fill
this.fill();
}
this.strokeStyle = linecolor;
this.stroke();
}
CanvasRenderingContext2D.prototype.maximize = function() {
this.canvas.width = window.innerWidth;
this.canvas.height = window.innerHeight;
}
mousectx = $("#canvas-mouse")[0].getContext("2d");
mousectx.maximize();
//Dice handlers
$(".object.die").hover(function() {
//Hover event goes here
})
$(".object.die").mousedown(function() {
//Click event goes here
})
//Mouse movement handler
$(document).mousemove(function(e){
//Get the mouse positions and put them in {mouse}
mouse.x = e.pageX;z
mouse.y = e.pageY;
//Redraw the grab circle
mousectx.clearCanvas();
mousectx.drawCircle(mouse.x,mouse.y,grabsize,1,"#000000","rgba(0,0,255,0.5)");
});
提前感谢。尝试使用指针事件:无
。此规则告诉浏览器忽略某个元素。它不会接收鼠标事件,但会“通过”
这可能会解决这个问题。画布鼠标不应该有一个相对位置来运行z索引吗?
html, body {
width: 100%;
height: 100%;
margin: 2px;
overflow: hidden;
color: #FFFFFF;
background-color: #2C744C;
}
canvas.fullscreen {
position: absolute;
left: 0px;
top: 0px;
z-index: -1;
}
.object {
position: absolute;
}
#canvas-mouse {
z-index: 10;
}
CanvasRenderingContext2D.prototype.drawCircle = function(xpos, ypos, radius, linewidth, linecolor, fill) {
if(typeof(linewidth)==="undefined") {
linewidth = 1;
}
if(typeof(linecolor)==="undefined") {
linecolor = "#000000";
}
this.beginPath();
this.arc(xpos, ypos, radius, 0, 2*Math.PI, false);
this.lineWidth = linewidth;
if(typeof(fill)!=="undefined") {
this.fillStyle = fill
this.fill();
}
this.strokeStyle = linecolor;
this.stroke();
}
CanvasRenderingContext2D.prototype.maximize = function() {
this.canvas.width = window.innerWidth;
this.canvas.height = window.innerHeight;
}
mousectx = $("#canvas-mouse")[0].getContext("2d");
mousectx.maximize();
//Dice handlers
$(".object.die").hover(function() {
//Hover event goes here
})
$(".object.die").mousedown(function() {
//Click event goes here
})
//Mouse movement handler
$(document).mousemove(function(e){
//Get the mouse positions and put them in {mouse}
mouse.x = e.pageX;z
mouse.y = e.pageY;
//Redraw the grab circle
mousectx.clearCanvas();
mousectx.drawCircle(mouse.x,mouse.y,grabsize,1,"#000000","rgba(0,0,255,0.5)");
});
#canvas-mouse {
z-index: 10;
pointer-events: none;
}