Home › Forums › Report Bugs › Safari iOS: Total canvas memory use exceeds the maximum limit › Reply To: Safari iOS: Total canvas memory use exceeds the maximum limit

February 13, 2019 at 2:25 pm #24314

uniserve

We use tested this on an

iPad pro iOS Version 12.1.3,
iPad pro iOS Version 12.1.4,
iPhone 7 iOS Version 12.1.3,
iPhone Xs iOS Version 12.1.3,
iPhone Xs iOS Version 12.1.4

always with Safari.

Here is the Link to the demo Page http://dev.uniserve.de (Using chart.destroy()).
Here is the Link to the demo Page http://dev.uniserve.de/test2.html (Using new chart object).

To force the problem there are a the Buttons

Here is the Code of an sample page :

<html>
<head>
<script>
var renderNumber = 0;
var chart ;
window.onload = function () {

	chart = new CanvasJS.Chart("chartContainer", {
	animationEnabled: true,
	exportEnabled: true,
	theme: "light1", // "light1", "light2", "dark1", "dark2"
	title:{
		text: "Render Test" 
	},
	data: [{
		type: "column", //change type to bar, line, area, pie, etc
		//indexLabel: "{y}", //Shows y value on all Data Points
		indexLabelFontColor: "#5A5757",
		indexLabelPlacement: "outside",
		dataPoints: [
			{ x: 10, y: 71 },
			{ x: 20, y: 55 },
			{ x: 30, y: 50 },
			{ x: 40, y: 65 },
			{ x: 50, y: 92, indexLabel: "Highest" },
			{ x: 60, y: 68 },
			{ x: 70, y: 38 },
			{ x: 80, y: 71 },
			{ x: 90, y: 54 },
			{ x: 100, y: 60 },
			{ x: 110, y: 36 },
			{ x: 120, y: 49 },
			{ x: 130, y: 21, indexLabel: "Lowest" }
		]
	}]
});
chart.render();
}


function rerenderChart(number) {
	chart.destroy();
	if (number == null)
	{
		renderNumber = renderNumber + 1;
		number = renderNumber;
	}
	chart = new CanvasJS.Chart("chartContainer", {
	animationEnabled: true,
	exportEnabled: true,
	theme: "light1", // "light1", "light2", "dark1", "dark2"
	title:{
		text: "Render " + number 
	},
	data: [{
		type: "column", //change type to bar, line, area, pie, etc
		//indexLabel: "{y}", //Shows y value on all Data Points
		indexLabelFontColor: "#5A5757",
		indexLabelPlacement: "outside",
		dataPoints: [
			{ x: 10, y: 71 },
			{ x: 20, y: 55 },
			{ x: 30, y: 50 },
			{ x: 40, y: 65 },
			{ x: 50, y: 92, indexLabel: "Highest" },
			{ x: 60, y: 68 },
			{ x: 70, y: 38 },
			{ x: 80, y: 71 },
			{ x: 90, y: 54 },
			{ x: 100, y: 60 },
			{ x: 110, y: 36 },
			{ x: 120, y: 49 },
			{ x: 130, y: 21, indexLabel: "Lowest" }
		]
	}]
});
chart.render();
}
function rerenderChart10() {
	for (var i = 1; i <= 10; i++) {
		setTimeout(rerenderChart(),50000);
  }
}
function rerenderChart100() {
	for (var i = 1; i <= 100; i++) {
		setTimeout(rerenderChart(),50000);
  }
}
</script>
</head>
<body>
<div id="chartContainer" style="height: 80%; width: 100%;"></div>
<div id="refreshPanel"><button onclick="rerenderChart()">Rerender once</button>
	<button onclick="rerenderChart10()">Rerender 10times</button>
	<button onclick="rerenderChart100()">Rerender 100times</button></div>
<script src="https://cdn.canvasjs.com/canvasjs.min.js"></script>
</body>
</html>