我已经按照此简短的tutorial实现了d3-zoom。
我正在使用https://d3js.org/d3.v5.min.js。这是我使用d3的第一个项目。
我的目标是要有一种平面图,显示场地的摊位表。与本教程类似,我从数组中绘制了形状元素。就我而言,我已将一组展位信息输入到元素网格中。
缩放功能可以正常工作, 除外,当我的光标位于我的一个矩形的边框或填充或元素文本上时。如果光标指向这些元素中的任何一个,则缩放行为将停止。
尝试与在空白与触摸的形状或文本光标的滚轮进行放大。
我试图将console.log放在某个地方,以查看事件未传递的内容,但是甚至找不到我可以从哪里获取事件参数的问题。
任何帮助深表感谢!这是我的代码:
var svg = d3.select("#venue-svg"); // this is my svg element
// the zoom rectangle. from the tutorial: 'The zoom behavior is applied
// to an invisible rect overlaying the SVG element; this ensures that it
// receives input, and that the pointer coordinates are not affected by
// the zoom behavior’s transform.'
svg.append("rect")
.attr("width", "100%")
.attr("height", "100%")
.style("fill", "none")
.style("pointer-events", "all")
.call(
d3
.zoom()
.scaleExtent([1 / 2, 4])
.on("zoom", zoomed)
);
function zoomed() {
g.attr("transform", d3.event.transform);
}
// a parent <g> that holds everything else and is targeted
// for the transform (from the tutorial).
var g = svg.append("g");
// the groups that hold each booth table, associated org name, etc.
var tables = g
.selectAll("g")
.data(venueBooths)
.enter()
.append("g")
.attr("transform", function(d) {
return "translate(" + d.x + " " + d.y + ")";
});
var tableRects = tables
.append("rect")
.attr("stroke", "steelblue")
.attr("stroke-width", "2px")
.attr("width", function(d) {
return d.w;
})
.attr("height", function(d) {
return d.h;
})
.attr("fill", "none")
.attr("fill", function(d) {
return $.isEmptyObject(d.reservation) ? "none" : "#FF5733";
})
.attr("id", function(d) {
return "table-" + d.id;
});
tables
.append("text")
.text(function(d) {
return "Booth " + d.id;
})
.attr("dx", 5)
.attr("dy", 60)
.attr("font-size", "8px");
tables
.append("text")
.text(function(d) {
return d.reservation.orgName ? d.reservation.orgName : "Available";
})
.attr("dy", 15)
.attr("dx", 5)
.attr("font-size", "9px")
.attr("font-weight", "bold");
答案 0 :(得分:2)
尝试最后创建rect,以使DOM看起来像这样:
<svg>
<g></g>
<rect></rect>
</svg>
由于缩放功能已附加到大矩形,因此在其上方创建较小的框可防止缩放事件传播到其下方的大矩形。它适用于带有fill: none;
的盒子,因为它的行为类似于空心盒子。
尝试将代码修改为:
var svg = d3.select("#venue-svg"); // this is my svg element
// the zoom rectangle. from the tutorial: 'The zoom behavior is applied
// to an invisible rect overlaying the SVG element; this ensures that it
// receives input, and that the pointer coordinates are not affected by
// the zoom behavior’s transform.'
function zoomed() {
g.attr("transform", d3.event.transform);
}
// a parent <g> that holds everything else and is targeted
// for the transform (from the tutorial).
var g = svg.append("g");
// the groups that hold each booth table, associated org name, etc.
var tables = g
.selectAll("g")
.data(venueBooths)
.enter()
.append("g")
.attr("transform", function(d) {
return "translate(" + d.x + " " + d.y + ")";
});
var tableRects = tables
.append("rect")
.attr("stroke", "steelblue")
.attr("stroke-width", "2px")
.attr("width", function(d) {
return d.w;
})
.attr("height", function(d) {
return d.h;
})
.attr("fill", "none")
.attr("fill", function(d) {
return $.isEmptyObject(d.reservation) ? "none" : "#FF5733";
})
.attr("id", function(d) {
return "table-" + d.id;
});
tables
.append("text")
.text(function(d) {
return "Booth " + d.id;
})
.attr("dx", 5)
.attr("dy", 60)
.attr("font-size", "8px");
tables
.append("text")
.text(function(d) {
return d.reservation.orgName ? d.reservation.orgName : "Available";
})
.attr("dy", 15)
.attr("dx", 5)
.attr("font-size", "9px")
.attr("font-weight", "bold");
svg.append("rect")
.attr("width", "100%")
.attr("height", "100%")
.style("fill", "none")
.style("pointer-events", "all")
.call(
d3
.zoom()
.scaleExtent([1 / 2, 4])
.on("zoom", zoomed)
);