d3.select('#rectangle').on('click', function(){ new Rectangle(); });
var w = 600, h = 500;
var svg = d3.select('body').append('svg').attr("width", w).attr("height", h);
function Rectangle() {
var self = this, rect, rectData = [], isDown = false, m1, m2, isDrag = false;
svg.on('mousedown', function() {
\t \t console.log(isDown);
m1 = d3.mouse(this);
if (!isDown && !isDrag) {
self.rectData = [ { x: m1[0], y: m1[1] }, { x: m1[0], y: m1[1] } ];
self.rectangleElement = d3.select('svg').append('rect').attr('class', 'rectangle').call(dragR);
self.pointElement1 = d3.select('svg').append('circle').attr('class', 'pointC').call(dragC1);
self.pointElement2 = d3.select('svg').append('circle').attr('class', 'pointC').call(dragC2);
self.pointElement3 = svg.append('circle').attr('class', 'pointC').call(dragC3);
self.pointElement4 = svg.append('circle').attr('class', 'pointC').call(dragC4);
updateRect();
isDrag = false;
} else {
isDrag = true;
}
isDown = !isDown;
})
.on('mousemove', function() {
m2 = d3.mouse(this);
if(isDown && !isDrag) {
self.rectData[1] = { x: m2[0] - 5, y: m2[1] - 5};
updateRect();
}
});
function updateRect() {
self.rectangleElement
\t \t .attr("x", self.rectData[1].x - self.rectData[0].x > 0 ? self.rectData[0].x : self.rectData[1].x)
.attr("y", self.rectData[1].y - self.rectData[0].y > 0 ? self.rectData[0].y : self.rectData[1].y)
.attr("width", Math.abs(self.rectData[1].x - self.rectData[0].x))
.attr("height", Math.abs(self.rectData[1].y - self.rectData[0].y));
var point1 = self.pointElement1.data(self.rectData);
point1.attr('r', 5)
.attr('cx', self.rectData[0].x)
.attr('cy', self.rectData[0].y);
var point2 = self.pointElement2.data(self.rectData);
point2.attr('r', 5)
.attr('cx', self.rectData[1].x)
.attr('cy', self.rectData[1].y);
var point3 = self.pointElement3.data(self.rectData);
point3.attr('r', 5)
.attr('cx', self.rectData[1].x)
.attr('cy', self.rectData[0].y);
var point3 = self.pointElement4.data(self.rectData);
point3.attr('r', 5)
.attr('cx', self.rectData[0].x)
.attr('cy', self.rectData[1].y);
}
var dragR = d3.drag().on('drag', dragRect);
function dragRect() {
var e = d3.event;
for(var i = 0; i < self.rectData.length; i++){
self.rectangleElement
.attr('x', self.rectData[i].x += e.dx)
.attr('y', self.rectData[i].y += e.dy);
}
self.rectangleElement.style('cursor', 'move');
updateRect();
}
var dragC1 = d3.drag().on('drag', dragPoint1);
var dragC2 = d3.drag().on('drag', dragPoint2);
var dragC3 = d3.drag().on('drag', dragPoint3);
var dragC4 = d3.drag().on('drag', dragPoint4);
function dragPoint1() {
var e = d3.event;
self.pointElement1
.attr('cx', function(d) { return d.x += e.dx })
.attr('cy', function(d) { return d.y += e.dy });
updateRect();
}
function dragPoint2() {
var e = d3.event;
self.pointElement2
.attr('cx', self.rectData[1].x += e.dx)
.attr('cy', self.rectData[1].y += e.dy);
updateRect();
}
function dragPoint3() {
var e = d3.event;
self.pointElement3
.attr('cx', self.rectData[1].x += e.dx)
.attr('cy', self.rectData[0].y += e.dy);
updateRect();
}
function dragPoint4() {
var e = d3.event;
self.pointElement4
.attr('cx', self.rectData[0].x += e.dx)
.attr('cy', self.rectData[1].y += e.dy);
updateRect();
}
}//end Rectangle
svg {
border: solid 1px red;
}
rect {
fill: lightblue;
stroke: blue;
stroke-width: 2px;
}
<button id='rectangle'>Rectangle</button>
<script src="https://d3js.org/d3.v4.js" charset="utf-8"></script>
因为小提琴仍然使用d3.js V3该版本工作正常。我在这里更新了http://jsfiddle.net/pjmdbq4s/而不是使用d3.js v4,但它不起作用,控制台在d3.v4.min上显示[Uncaught TypeError:无法读取属性'ownerDocument'为null]。 js:4 – molotofc
在非缩小版本 - d3.v4.js上,显示相同的错误,但在行#7383 [this.ownerDocument = parent.ownerDocument;] – molotofc