ven*_*nky 5 html javascript css canvas angularjs
我正在使用angular chart.js开发我的第一个示例代码,我无法更改自定义高度和宽度,如何更改画布的高度和宽度.
码:
CSS
#myChart {width:500px; 高度:500像素; }
HTML
<body ng-controller="LineCtrl">
<canvas id="myChart" ></canvas>
<div class="chart-container">
<linechart data="data" options="options" mode=""></linechart>
</div>
使用Javascript
var data = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
label: "My First dataset",
fillColor: "rgba(220,220,220,0.2)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(220,220,220,1)",
data: [65, 59, 80, 81, 56, 55, 40]
},
{
label: "My Second dataset",
fillColor: "rgba(151,187,205,0.2)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
data: [28, 48, 40, 19, 86, 27, 90]
}
]
};
var options = {
scaleOverlay : false,
scaleOverride : false,
scaleSteps : null,
scaleStepWidth : null,
scaleStartValue : null,
scaleLineColor : "rgba(0,0,0,.1)",
scaleLineWidth : 1,
scaleShowLabels : true,
scaleLabel : "<%=value%>",
scaleFontFamily : "'proxima-nova'",
scaleFontSize : 10,
scaleFontStyle : "normal",
scaleFontColor : "#909090",
scaleShowGridLines : true,
scaleGridLineColor : "rgba(0,0,0,.05)",
scaleGridLineWidth : 1,
bezierCurve : true,
pointDot : true,
pointDotRadius : 3,
pointDotStrokeWidth : 1,
datasetStroke : true,
datasetStrokeWidth : 2,
datasetFill : true,
animation : true,
animationSteps : 60,
animationEasing : "easeOutQuart",
onAnimationComplete : null
}
var ctx=document.getElementById("myChart").getContext("2d");
var myLineChart = new Chart(ctx).Line(data, options);
//console.log(myLineChart)
我通过更改一些选项属性并在上下文中设置宽度和高度来做到这一点: -
var options = {
responsive: false,
maintainAspectRatio: false
}
在Js
var ctx=document.getElementById("myChart").getContext("2d");
ctx.canvas.width = 100;
ctx.canvas.height = 100;
var myLineChart = new Chart(ctx).Line(data, options);
我是通过添加画布样式来完成的。经过饼状图测试。例：
<canvas id="pie" class="chart chart-pie" style="height:40px;"
chart-data="pieChart.data" chart-labels="pieChart.labels"
chart-colours="pieChart.colours"
chart-options="pieChart.options">
</canvas>
码：
$scope.pieChart = {};
$scope.pieChart.labels = ['Label 1', 'Label 2'];
$scope.pieChart.data = [10,20];
$scope.pieChart.colours = ['#1EF9A1', '#FD1F5E'];
// This option is important!!!
$scope.pieChart.options = {
responsive: false,
maintainAspectRatio: false
}