<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<style type="text/css">
html,
body,
canvas {
padding: 0;
margin: 0;
width: 100%;
height: 100%;
overflow-y: hidden;
background-color: transparent;
}
</style>
</head>
<body>
<canvas id="lime-painter"></canvas>
<script type="text/javascript" src="./uni.webview.1.5.3.js"></script>
<script type="text/javascript" src="./painter.js"></script>
<script>
var cache = [];
var painter = null;
var canvas = null;
var context = null;
var timer = null;
var pixelRatio = 1;
console.log = function (...args) {
postMessage(args);
};
// function stringify(key, value) {
// if (typeof value === 'object' && value !== null) {
// if (cache.indexOf(value) !== -1) {
// return;
// }
// cache.push(value);
// }
// return value;
// };
function emit(event, data) {
postMessage({
event,
data: (typeof data !== 'object' && data !== null ? data : JSON.stringify(data))
});
cache = [];
};
function postMessage(data) {
uni.postMessage({
data
});
};
function init(dpr) {
canvas = document.querySelector('#lime-painter');
context = canvas.getContext('2d');
pixelRatio = dpr || window.devicePixelRatio;
painter = new Painter({
id: 'lime-painter',
context,
canvas,
pixelRatio,
width: canvas.offsetWidth,
height: canvas.offsetHeight,
listen: {
onProgress(v) {
emit('progressChange', v);
},
onEffectFail(err) {
//console.error(err)
emit('fail', err);
}
}
});
emit('inited', true);
};
function save(args) {
delete args.success;
delete args.fail;
clearTimeout(timer);
timer = setTimeout(() => {
const path = painter.save(args);
if (typeof path == 'string') {
const index = Math.ceil(path.length / 8);
for (var i = 0; i < 8; i++) {
if (i == 7) {
emit('success', path.substr(i * index, index));
} else {
emit('file', path.substr(i * index, index));
}
};
} else {
// console.log('canvas no data')
emit('fail', 'canvas no data');
};
}, 30);
};
async function source(args) {
let size = await painter.source(args);
emit('layoutChange', size);
if(!canvas.height) {
console.log('canvas no size')
emit('fail', 'canvas no size');
}
painter.render().catch(err => {
// console.error(err)
emit('fail', err);
});
};
</script>
</body>
</html>