132 lines
3.3 KiB
HTML
132 lines
3.3 KiB
HTML
|
<!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-signature"></canvas>
|
||
|
|
<script type="text/javascript" src="./uni.webview.1.5.3.js"></script>
|
||
|
|
<script type="text/javascript" src="./signature.js"></script>
|
||
|
|
<script>
|
||
|
|
var signature = null;
|
||
|
|
var timer = null;
|
||
|
|
var isStart = false;
|
||
|
|
var options = null
|
||
|
|
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 update(v = {}) {
|
||
|
|
if (signature) {
|
||
|
|
options = v
|
||
|
|
signature.pen.setOption(v);
|
||
|
|
} else {
|
||
|
|
signature = new Signature.Signature({el: "lime-signature"});
|
||
|
|
canvasEl = signature.canvas.get("el");
|
||
|
|
options = v
|
||
|
|
signature.pen.setOption(v)
|
||
|
|
const width = signature.canvas.get("width");
|
||
|
|
const height = signature.canvas.get("height");
|
||
|
|
|
||
|
|
emit({changeSize: {width,height}})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function clear() {
|
||
|
|
signature.clear()
|
||
|
|
}
|
||
|
|
|
||
|
|
function undo() {
|
||
|
|
signature.undo()
|
||
|
|
}
|
||
|
|
function isEmpty() {
|
||
|
|
const isEmpty = signature.isEmpty()
|
||
|
|
emit({isEmpty});
|
||
|
|
}
|
||
|
|
function save(args) {
|
||
|
|
// delete args.success;
|
||
|
|
// delete args.fail;
|
||
|
|
clearTimeout(timer);
|
||
|
|
timer = setTimeout(() => {
|
||
|
|
let path = canvasEl.toDataURL()
|
||
|
|
const {backgroundColor, landscape} = options
|
||
|
|
if(backgroundColor || landscape) {
|
||
|
|
const canvas = document.createElement('canvas')
|
||
|
|
const width = this.signature.canvas.get('width')
|
||
|
|
const height = this.signature.canvas.get('height')
|
||
|
|
const pixelRatio = this.signature.canvas.get('pixelRatio')
|
||
|
|
const size = [width, height]
|
||
|
|
if(landscape) {size.reverse()}
|
||
|
|
canvas.width = size[0] * pixelRatio
|
||
|
|
canvas.height = size[1] * pixelRatio
|
||
|
|
const context = canvas.getContext('2d')
|
||
|
|
context.scale(pixelRatio, pixelRatio)
|
||
|
|
if (landscape) {
|
||
|
|
context.translate(0, width)
|
||
|
|
context.rotate(-Math.PI / 2)
|
||
|
|
}
|
||
|
|
if (backgroundColor) {
|
||
|
|
context.fillStyle = backgroundColor
|
||
|
|
context.fillRect(0, 0, width, height)
|
||
|
|
}
|
||
|
|
context.drawImage(this.signature.canvas.get('el'), 0, 0, width, height)
|
||
|
|
path = canvas.toDataURL()
|
||
|
|
canvas.remove()
|
||
|
|
}
|
||
|
|
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.error("canvas no data");
|
||
|
|
emit({"fail": "canvas no data"});
|
||
|
|
}
|
||
|
|
}, 30);
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
</body>
|
||
|
|
</html>
|