我正在使用这个 Info window with chart ESRI 教程。
我想为较小的屏幕定制 dojox 饼图:
@media only screen
and (max-device-width: 320px) {
...
}
是否可以为自定义屏幕尺寸使用自定义 dojox 图表尺寸？
例如饼图为{width: 60px; height: 60px} 仅当在 max-device-width: 320px 的屏幕上加载时？
最佳答案
是的，这是可能的。
不过恐怕你不能仅通过 CSS 实现这一点，因为图表的大小取决于各种因素。如图表半径， map 信息窗口大小，容器大小<等
解决方案-
您可以根据屏幕大小动态更改上述值，您可以为此使用 window resize event..这就是您实现此目的的方法。
下面是工作代码-
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Info Window with Chart</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.20/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.20/esri/css/esri.css">
<style>
html, body, #map {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
.chart {
width:100px;
height:100px;
padding:0px !important;
}
</style>
<script src="https://js.arcgis.com/3.20/"></script>
<script>
var map;
// Try other themes: Julie, CubanShirts, PrimaryColors, Charged, BlueDusk, Bahamation, Harmony, Shrooms
var theme = "Wetland";
require([
"esri/map", "esri/layers/FeatureLayer",
"esri/dijit/InfoWindow", "esri/InfoTemplate",
"esri/symbols/SimpleFillSymbol", "esri/renderers/SimpleRenderer",
"dijit/layout/ContentPane", "dijit/layout/TabContainer",
"dojox/charting/Chart2D", "dojox/charting/plot2d/Pie",
"dojox/charting/action2d/Highlight", "dojox/charting/action2d/MoveSlice", "dojox/charting/action2d/Tooltip",
"dojox/charting/themes/" + theme,
"dojo/dom-construct", "dojo/dom-class",
"dojo/number", "dojo/domReady!"
], function(
Map, FeatureLayer,
InfoWindow, InfoTemplate,
SimpleFillSymbol, SimpleRenderer,
ContentPane, TabContainer,
Chart2D, Pie,
Highlight, MoveSlice, Tooltip,
dojoxTheme,
domConstruct, domClass,
number, parser
) {
// Use the info window instead of the popup.
var infoWindow = new InfoWindow(null, domConstruct.create("div"));
infoWindow.startup();
map = new Map("map", {
basemap: "streets",
center: [-113.405, 43.521],
infoWindow: infoWindow,
zoom: 6
});
map.infoWindow.resize(180, 200);
var template = new esri.InfoTemplate();
// Flag icons are from http://twitter.com/thefella, released under creative commons.
template.setTitle("<b><img src='flags/${STATE_ABBR}.png'> ${STATE_NAME}</b>");
template.setContent(getWindowContent);
var statesLayer = new FeatureLayer("https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/5", {
mode: FeatureLayer.MODE_ONDEMAND,
infoTemplate: template,
outFields: ["*"]
});
var symbol = new SimpleFillSymbol();
statesLayer.setRenderer(new SimpleRenderer(symbol));
map.addLayer(statesLayer);
function getWindowContent(graphic) {
// Make a tab container.
var tc = new TabContainer({
style: "width:100%;height:100%;"
}, domConstruct.create("div"));
// Display attribute information.
var cp1 = new ContentPane({
title: "Details",
content: "<a target='_blank' href='https://en.wikipedia.org/wiki/" +
graphic.attributes.STATE_NAME + "'>Wikipedia Entry</a><br><br>Median Age: " +
graphic.attributes.MED_AGE + "<br>Median Age (Male): " +
graphic.attributes.MED_AGE_M + "<br>Median Age (Female): " +
graphic.attributes.MED_AGE_F
});
// Display a dojo pie chart for the male/female percentage.
var cp2 = new ContentPane({
title: "Pie Chart"
});
tc.addChild(cp1);
tc.addChild(cp2);
// Create the chart that will display in the second tab.
var c = domConstruct.create("div", {
id: "demoChart"
}, domConstruct.create("div"));
var chart = new Chart2D(c);
domClass.add(chart, "chart");
// Apply a color theme to the chart.
chart.setTheme(dojoxTheme);
chart.addPlot("default", {
type: "Pie",
radius: 45,
htmlLabels: true
});
tc.watch("selectedChildWidget", function(name, oldVal, newVal){
if ( newVal.title === "Pie Chart" ) {
chart.resize(100,100);
}
});
// Calculate percent male/female.
var total = graphic.attributes.POP2000;
var male = number.round(graphic.attributes.MALES / total * 100, 2);
var female = number.round(graphic.attributes.FEMALES / total * 100, 2);
chart.addSeries("PopulationSplit", [{
y: male,
tooltip: male,
text: "Male"
}, {
y: female,
tooltip: female,
text: "Female"
}]);
//highlight the chart and display tooltips when you mouse over a slice.
new Highlight(chart, "default");
new Tooltip(chart, "default");
new MoveSlice(chart, "default");
cp2.set("content", chart.node);
return tc.domNode;
}
});
</script>
</head>
<body class="claro">
<div id="map"></div>
</body>
</html>希望这对您有所帮助:)
关于javascript - 在移动屏幕上调整 dojox 图表的大小，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43965160/