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main.js
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main.js
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const myData = {
"headings": [
"Usage Count",
"Thumbnail",
"Name"
],
"data": [
[
32,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/8/88/PDP-11-M7270.jpg/200px-PDP-11-M7270.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:PDP-11-M7270.jpg'>PDP-11-M7270.jpg</a>"
// "https://upload.wikimedia.org/wikipedia/commons/thumb/8/88/PDP-11-M7270.jpg/200px-PDP-11-M7270.jpg"
],
[
16,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/2/27/Chinese-abacus.jpg/200px-Chinese-abacus.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Chinese-abacus.jpg'>Chinese-abacus.jpg</a>"
// "https://upload.wikimedia.org/wikipedia/commons/thumb/2/27/Chinese-abacus.jpg/200px-Chinese-abacus.jpg"
],
[
14,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/7/74/Sun-crypto-accelerator-1000.jpg/200px-Sun-crypto-accelerator-1000.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Sun-crypto-accelerator-1000.jpg'>Sun-crypto-accelerator-1000.jpg</a>"
],
[
12,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/IBM-3279.jpg/200px-IBM-3279.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:IBM-3279.jpg'>IBM-3279.jpg</a>"
],
[
11,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Macintosh-motherboard.jpg/200px-Macintosh-motherboard.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Macintosh-motherboard.jpg'>Macintosh-motherboard.jpg</a>"
],
[
11,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/2/23/Vt100-adventure.jpg/200px-Vt100-adventure.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Vt100-adventure.jpg'>Vt100-adventure.jpg</a>"
],
[
11,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/8/8a/VAX-11-750.jpg/200px-VAX-11-750.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:VAX-11-750.jpg'>VAX-11-750.jpg</a>"
],
[
10,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/Power-cpu.jpg/200px-Power-cpu.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Power-cpu.jpg'>Power-cpu.jpg</a>"
],
[
8,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Drum-printer.jpg/200px-Drum-printer.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Drum-printer.jpg'>Drum-printer.jpg</a>"
],
[
8,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Scsi-connectors.jpg/200px-Scsi-connectors.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Scsi-connectors.jpg'>Scsi-connectors.jpg</a>"
],
[
7,
"<img class='lazy' data-src='https://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/Lens-iris.jpg/200px-Lens-iris.jpg'/>",
"<a href='https://commons.wikimedia.org/wiki/File:Lens-iris.jpg'>Lens-iris.jpg</a>"
]
]
};
renderChart();
function renderChart() {
const tooltip = document.getElementById("tooltip-container");
const chartLabels = [], usageCount = [];
const maxDisplay = (myData.data.length < 10) ? myData.data.length : 10; //If there are more than 10 elements: Only display 10.
for (let i = 0; i < maxDisplay; i++) {
chartLabels.push(myData.data[i][2]);
usageCount.push(myData.data[i][0]);
}
new Chart(document.getElementById("chart"), {
type: "doughnut",
data: {
// labels: chartLabels,
datasets: [{
data: usageCount,
backgroundColor: [
'#ac5c91',
'#b5d29f',
'#b383b3',
'#d5dc76',
'#71b37b',
'#8a84a3',
'#d09440',
'#578e86',
'#d56d76',
'#4f93c0',
'#69999f'
]
}]
},
options: {
title: {
display: true,
text: 'Top 10 Pictures',
fontSize: 22
},
tooltips: {
enabled: false,
custom: function (tooltipModel) {
// Hide if no tooltip
if (tooltipModel.opacity === 0) {
tooltip.style.opacity = 0;
return;
}
// console.log(tooltipModel.dataPoints[0].index);
// show the tooltip.
tooltip.style.opacity = 1;
// create the img element and append it to the tooltip element.
const img = document.createElement('img');
const selectedIndex = tooltipModel.dataPoints[0].index;
// console.log(selectedIndex);
const urlHtml = myData.data[selectedIndex][1];
// console.log(urlHtml);
const url = urlHtml.slice(urlHtml.search("src='") + 5, -3);
// console.log(url);
img.src = url;
// console.log(img.src);
tooltip.innerHTML = "";
tooltip.appendChild(img);
//Create text below image
const tooltipText = document.createElement('div');
tooltipText.className = "tooltip-text";
const nUsage = myData.data[selectedIndex][0];
tooltipText.innerHTML = "Used on <b>" + nUsage + "</b> sites";
tooltip.appendChild(tooltipText);
// move the tooltip to the 'correct' position.
const position = this._chart.canvas.getBoundingClientRect();
console.log(position);
// tooltip.style.left = position.left + window.pageXOffset + tooltipModel.caretX + 'px';
// tooltip.style.top = position.top + window.pageYOffset + tooltipModel.caretY + 'px';
tooltip.style.top = (position.height / 2) - 70 + 'px';
console.log("top:" + tooltip.style.top);
tooltip.style.left = (position.width / 2) - 100 + 'px';
}
}
}
});
}