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- # js_clock.py
- import tempfile
- import webbrowser
- import os
- js_data = '''<!DOCTYPE html>
- <html>
- <body>
- <canvas id="canvas" width="400" height="400"
- style="background-color:#333">
- </canvas>
- <script>
- var canvas = document.getElementById("canvas");
- var ctx = canvas.getContext("2d");
- var radius = canvas.height / 2;
- ctx.translate(radius, radius);
- radius = radius * 0.90
- setInterval(drawClock, 1000);
- function drawClock() {
- drawFace(ctx, radius);
- drawNumbers(ctx, radius);
- drawTime(ctx, radius);
- }
- function drawFace(ctx, radius) {
- var grad;
- ctx.beginPath();
- ctx.arc(0, 0, radius, 0, 2*Math.PI);
- ctx.fillStyle = 'white';
- ctx.fill();
- grad = ctx.createRadialGradient(0,0,radius*0.95, 0,0,radius*1.05);
- grad.addColorStop(0, '#333');
- grad.addColorStop(0.5, 'white');
- grad.addColorStop(1, '#333');
- ctx.strokeStyle = grad;
- ctx.lineWidth = radius*0.1;
- ctx.stroke();
- ctx.beginPath();
- ctx.arc(0, 0, radius*0.1, 0, 2*Math.PI);
- ctx.fillStyle = '#333';
- ctx.fill();
- }
- function drawNumbers(ctx, radius) {
- var ang;
- var num;
- ctx.font = radius*0.15 + "px arial";
- ctx.textBaseline="middle";
- ctx.textAlign="center";
- for(num = 1; num < 13; num++){
- ang = num * Math.PI / 6;
- ctx.rotate(ang);
- ctx.translate(0, -radius*0.85);
- ctx.rotate(-ang);
- ctx.fillText(num.toString(), 0, 0);
- ctx.rotate(ang);
- ctx.translate(0, radius*0.85);
- ctx.rotate(-ang);
- }
- }
- function drawTime(ctx, radius){
- var now = new Date();
- var hour = now.getHours();
- var minute = now.getMinutes();
- var second = now.getSeconds();
- //hour
- hour=hour%12;
- hour=(hour*Math.PI/6)+
- (minute*Math.PI/(6*60))+
- (second*Math.PI/(360*60));
- drawHand(ctx, hour, radius*0.5, radius*0.07);
- //minute
- minute=(minute*Math.PI/30)+(second*Math.PI/(30*60));
- drawHand(ctx, minute, radius*0.8, radius*0.07);
- // second
- second=(second*Math.PI/30);
- drawHand(ctx, second, radius*0.9, radius*0.02);
- }
- function drawHand(ctx, pos, length, width) {
- ctx.beginPath();
- ctx.lineWidth = width;
- ctx.lineCap = "round";
- ctx.moveTo(0,0);
- ctx.rotate(pos);
- ctx.lineTo(0, -length);
- ctx.stroke();
- ctx.rotate(-pos);
- }
- </script>
- </body>
- </html>
- '''
- chrome_path = 'C:/Program Files (x86)/Google/Chrome/Application/chrome.exe %s'
- tf = tempfile.mktemp(".html", "JSdemo_")
- print tf
- with open(tf, 'w') as temp:
- temp.write(js_data)
- webbrowser.get(chrome_path).open(tf)
- os.remove(tf)
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