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mins-painter-v3.html
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<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=GBK" />
<title>html 5 minutes chart painter</title>
<script src="libs/loading.js" type="text/javascript" charset="GBK"></script>
<script src="libs/util.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/absPainter.js" type="text/javascript" charset="GBK"></script>
<script src="libs/ajax.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/crossLines.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/axis-x.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/linepainter.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/volumePainter.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/axis-y.js?a" type="text/javascript" charset="GBK"></script>
<script src="libs/chartEventHelper.js?a" type="text/javascript" charset="GBK"></script>
</head>
<body>
<canvas id="canvas" width="414" height="310" style="z-index: 3; background: transparent;
border: 1px solid #69c">
<p>
你的浏览器不支持html5哟</p>
</canvas>
<div id="debug"></div>
<!--
options:{
fallColor:'green',riseColor:'red',normalColor:'black',
topText:{font:'11px 宋体',color:'black',region:{x:.5,y:.5,width:213,height:20}},
minsChart:{region:{x:2,y:20,width:180,height:150},priceLineColor:'blue',middleLineColor:'red',otherSplitLineColor:'lightgray',borderColor:'gray'},
xScaler:{font:'11px 宋体',color:black,region:{x:5,y:130,width:180,height:20}},
bottomText:{font:'11px 宋体',color:'black',region:{x:5,y:130,width:213,height:20}}
}
-->
<script src="mins-data.js"></script><!---->
<script type="text/javascript">
/*
html5行情图库
author:yukaizhao
blog:http://www.cnblogs.com/yukaizhao/ http://weibo.com/yukaizhao/
参与项目或技术交流：[email protected]
*/
function line(ctx, x0, y0, x1, y1, color, width) {
ctx.beginPath();
ctx.moveTo(x0, y0);
ctx.lineTo(x1, y1);
ctx.strokeStyle = color;
ctx.lineWidth = width || 1;
ctx.stroke();
}
function getMinTime(minIndex) {
//上午09：30-11：30
//下午13：00-15：00
var d = new Date();
if (minIndex <= 120) {
d.setHours(9, 30, 30);
d = new Date(d.getTime() + (minIndex) * 60 * 1000);
} else {
d.setHours(13, 0, 0);
d = new Date(d.getTime() + (minIndex - 120) * 60 * 1000);
}
var hour = d.getHours() > 9 ? new String(d.getHours()) : '0' + d.getHours();
var minutes = d.getMinutes() > 9 ? new String(d.getMinutes()) : '0' + d.getMinutes();
var seconds = '30';
return hour + '' + minutes + seconds;
}
function Tip(options) {
this.options = options;
this.canvas = options.canvas;
this.canvas.tip = this;
}
Tip.prototype = {
show: function (relativePoint, html) {
var dc = this.dataContext;
var painter = this.canvas.painter;
if (dc) {
if (dc.isNewQuote) painter.fillTopText(dc.data);
else painter.fillTopText(dc.data, dc.index);
}
},
update: function (relativePoint, html) {
this.show(relativePoint, html);
},
hide: function () {
var dc = this.dataContext;
var painter = this.canvas.painter;
if (dc) {
painter.fillTopText(dc.data);
}
}
};
function minsChart(canvasId, options) {
extendObject(options, this);
this.canvas = $id(canvasId);
this.ctx = this.canvas.getContext('2d');
this.canvas.painter = this;
}
minsChart.prototype = {
/*
data format like :{
quote: {
time: 20111214150106,
open: 2241.390,
preClose: 2248.590,
highest: 2256.740,
lowest: 2224.730,
price: 2228.530,
volume: 4407982200,
amount: 38621178573
},
mins: [
{price:2239.45,volume:49499299,amount:459279327}
]
}
*/
paint: function (data) {
this.fillTopText(data);
this.paintChart(data);
this.paintxAxis();
this.fillBottomText(data);
this.paintVolume(data);
},
paintVolume: function (data) {
var ctx = this.ctx;
var options = this.volume;
ctx.beginPath();
ctx.rect(options.region.x, options.region.y, options.region.width, options.region.height);
ctx.strokeStyle = options.borderColor;
ctx.stroke();
line(ctx, options.region.x, options.region.y + options.region.height / 2, options.region.x + options.region.width, options.region.y + options.region.height / 2, options.splitLineColor);
options.getDataLength = function () { return this.data.items.length; };
options.maxDotsCount = this.maxDotsCount;
var volumePainterImp = new volumePainter(options);
var painter = new Painter(this.canvas.id, volumePainterImp, { items: data.mins });
painter.paint();
var max = painter.maxVolume;
var unit;
if (max / 1000000 > 1000) {
max = max / 1000000;
unit = '百万';
} else {
max = max / 10000;
unit = '万';
}
var scalers = [max.toFixed(2), (max / 2).toFixed(2), '(' + unit + ')'];
var yscaler = new yAxis(this.volume.yScaler);
var painter = new Painter(this.canvas.id, yscaler, scalers);
painter.paint();
},
fillBottomText: function (data) {
if (!this.bottomText) return;
//高9999 低9999 成交888999
var ctx = this.ctx;
var txt = '高';
var options = this.bottomText;
ctx.font = options.font;
ctx.fillStyle = options.color;
var w = ctx.measureText(txt).width;
ctx.fillText(txt, options.region.x, options.region.y);
var x = options.region.x + w;
var quote = data.quote;
var me = this;
function getTxtColor(val) { return val > quote.preClose ? me.riseColor : (val == quote.preClose ? me.normalColor : me.fallColor); }
var highColor = getTxtColor(quote.highest);
var high = toMoney(quote.highest);
ctx.fillStyle = highColor;
w = ctx.measureText(high).width;
ctx.fillText(high, x, options.region.y);
x += w;
txt = ' 低';
ctx.fillStyle = options.color;
w = ctx.measureText(txt).width;
ctx.fillText(txt, x, options.region.y);
x += w;
var lowColor = getTxtColor(quote.lowest);
var low = toMoney(quote.lowest);
w = ctx.measureText(low).width;
ctx.fillStyle = lowColor;
ctx.fillText(low, x, options.region.y);
x += w;
ctx.fillStyle = options.color;
var amount = ' 成交' + bigNumberToText(quote.amount);
ctx.fillText(amount, x, options.region.y);
},
paintxAxis: function () {
var xAxisImpl = new xAxis(this.xScaler);
var xAxisPainter = new Painter(this.canvas.id, xAxisImpl, this.xScaler.data);
xAxisPainter.paint();
},
paintChart: function (data) {
var minsChartOptions = this.minsChart;
var region = this.minsChart.region;
var ctx = this.ctx;
ctx.beginPath();
ctx.strokeStyle = minsChartOptions.borderColor;
ctx.rect(region.x, region.y, region.width, region.height);
ctx.stroke();
//水平线
var middleIndex = (this.minsChart.horizontalLineCount + this.minsChart.horizontalLineCount % 2) / 2;
var splitCount = this.minsChart.horizontalLineCount + 1;
for (var i = 1; i <= this.minsChart.horizontalLineCount; i++) {
var color = (i == middleIndex ? minsChartOptions.middleLineColor : minsChartOptions.otherSplitLineColor);
var y = region.y + region.height * i / splitCount;
line(ctx, region.x, y, region.x + region.width, y, color);
}
//垂直线
splitCount = this.minsChart.verticalLineCount + 1;
for (var i = 1; i <= this.minsChart.verticalLineCount; i++) {
var x = region.x + region.width * i / splitCount;
line(ctx, x, region.y, x, region.y + region.height, minsChartOptions.otherSplitLineColor);
}
//价格线
var lineOptions = {
region: region,
maxDotsCount: this.maxDotsCount,
getDataLength: function () { return this.data.items.length; },
getItemValue: function (item) { return item.price; },
middleValue: data.quote.preClose, //通常是昨收
lineColor: minsChartOptions.priceLineColor
};
var linePainterImp = new linePainter(lineOptions);
var priceLinePainter = new Painter(this.canvas.id, linePainterImp, { items: data.mins });
priceLinePainter.paint();
//y轴
var yOptions = this.minsChart.yScalerLeft;
var preClose = data.quote.preClose;
var me = this;
yOptions.color = function (val) {
return val > preClose ? me.riseColor : (val == preClose ? me.normalColor : me.fallColor);
};
var scalersLeft = [];
var scalersRight = [];
var min = preClose - priceLinePainter.maxDiff;
var space = priceLinePainter.maxDiff * 2 / (this.minsChart.horizontalLineCount + 1);
for (var i = this.minsChart.horizontalLineCount + 1; i >= 0; i--) {
var val = min + i * space;
scalersLeft.push(val.toFixed(2));
var percent = (val - preClose) * 100 / preClose;
scalersRight.push(percent.toFixed(2) + '%');
}
var yx = new yAxis(yOptions);
var yAxisPainter = new Painter(this.canvas.id, yx, scalersLeft);
yAxisPainter.paint();
var yPercentOptions = this.minsChart.yScalerRight;
yPercentOptions.color = function (val) {
return (val == '0.00%' ? 'black' : (val.charAt(0) == '-' ? 'green' : 'red'));
};
var yxPercent = new yAxis(yPercentOptions);
var yxPercentPainter = new Painter(this.canvas.id, yxPercent, scalersRight);
yxPercentPainter.paint();
//均线
if (this.needPaintAvgPriceLine) {
//生成移动均线数据
var items = [];
var totalVolume = 0;
var totalAmount = 0;
data.mins.each(function (item) {
totalVolume += item.volume;
totalAmount += item.amount;
items.push(totalAmount / totalVolume);
});
lineOptions.lineColor = minsChartOptions.avgPriceLineColor;
lineOptions.getItemValue = function (item) { return item; };
linePainterImp = new linePainter(lineOptions);
var painterAvg = new Painter(this.canvas.id, linePainterImp, { items: items });
painterAvg.paint();
}
var me = this;
var chartRegion = me.minsChart.region;
function getY(x) {
var index = Math.ceil((x - me.minsChart.region.x) * me.maxDotsCount / me.minsChart.region.width);
var val;
var isNewQuote;
if (index >= 0 && index < data.mins.length) {
val = data.mins[index].price;
isNewQuote = false;
} else {
val = data.quote.price;
isNewQuote = true;
}
if (me.canvas.tip) me.canvas.tip.dataContext = { data: data, isNewQuote: isNewQuote, index: index };
var diff = val - preClose;
var middleY = (me.minsChart.region.y + me.minsChart.region.height / 2);
return middleY - diff * me.minsChart.region.height / 2 / priceLinePainter.maxDiff;
}
//添加鼠标事件
addCrossLinesAndTipEvents(this.canvas, {
getCrossPoint: function (ev) { return { x: ev.offsetX, y: getY(ev.offsetX) }; },
triggerEventRanges: { x: chartRegion.x, y: chartRegion.y, width: chartRegion.width, height: me.volume.region.y + me.volume.region.height - chartRegion.y },
tipOptions: {
getTipHtml: function (ev) { return null; },
position: { x: false, y: false }
},
crossLineOptions: {
color: 'black'
}
});
},
fillTopText: function (data, minIndex) {
var quote = data.quote;
var ctx = this.ctx;
var topText = this.topText;
var region = topText.region;
ctx.clearRect(region.x, region.y, region.width, region.height);
var price;
var time;
if (typeof minIndex == 'undefined') {
price = quote.price;
time = quote.time;
} else {
price = data.mins[minIndex].price;
time = quote.time.toString().substr(0, 8) + getMinTime(minIndex);
}
ctx.fillStyle = topText.color;
ctx.font = topText.font;
if (topText.textBaseline) ctx.textBaseline = topText.textBaseline;
var txt = '最新' + toMoney(price);
var width = ctx.measureText(txt).width;
ctx.fillText(txt, topText.region.x, topText.region.y);
var isRise = price > quote.preClose;
var isEqual = price == quote.preClose;
var isFall = price < quote.preClose;
var diff = toMoney(price - quote.preClose);
var txtRiseFall = (isRise ? '↑' : (isFall ? '↓' : '')) + diff
+ ('(')
+ toMoney(diff * 100 / quote.preClose)
+ '%)';
var x = topText.region.x + width;
ctx.fillStyle = isRise ? this.riseColor : (isFall ? this.fallColor : this.normalColor);
ctx.fillText(txtRiseFall, x, topText.region.y);
var temp = new String(time);
var txtTime = temp.charAt(8) + temp.charAt(9) + ':' + temp.charAt(10) + temp.charAt(11);
ctx.fillStyle = topText.color;
var timeWidth = ctx.measureText(txtTime).width;
ctx.fillText(txtTime, topText.region.x + topText.region.width - timeWidth, topText.region.y);
}
};
var chart = new minsChart('canvas', {
fallColor: 'green', riseColor: 'red', normalColor: 'black', maxDotsCount: 241, needPaintAvgPriceLine: false,
backgroundColor:'white',
topText: { font: '12px 宋体', color: 'black', region: { x: 58.5, y: 5.5, width: 305, height: 14 }, textBaseline: 'top' },
minsChart: {
region: { x: 56.5, y: 21.5, width: 310, height: 200 },
priceLineColor: 'blue', avgPriceLineColor: 'red', middleLineColor: 'red', otherSplitLineColor: 'lightgray', borderColor: 'gray',
horizontalLineCount: 7, verticalLineCount: 3,
yScalerLeft: { font: '12px Arial', region: { x: .5, y: 20, width: 50.5, height: 200 }, align: 'right', fontHeight: 9, textBaseline: 'top' },
yScalerRight: { font: '12px Arial', region: { x: 368.5, y: 20, width: 40.5, height: 200 }, align: 'right', fontHeight: 9, textBaseline: 'top' }
},
xScaler: {
font: '12px Arial', color: 'black',
region: { x: 56.5, y: 225, width: 310, height: 20 },
data: ['09:30', '10:30', '11:30/13:00', '14:00', '15:00']
},
//bottomText: { font: '11px 宋体', color: 'black', region: { x: 5.5, y: 260, width: 400, height: 20} },
volume: {
region: { x: 56.5, y: 245.5, width: 310, height: 60 },
bar: { color: 'green', width: 2 },
borderColor: 'lightgray', splitLineColor: 'lightgray',
yScaler: { font: '12px Arial', region: { x: .5, y: 242.5, width: 50.5, height: 60 }, color: 'black', align: 'right', fontHeight: 12, textBaseline: 'top' }
}
});
var data = getQuote();
chart.paint(data);
</script>
<style>
pre{padding: 60px 0 0 30px;color: gray;font-size: .8em;line-height: 20px;}
</style>
<p><a href="./index.html">返回列表页</a></p>
<pre>
Author:yukaizhao http://www.cnblogs.com/yukaizhao/ http://weibo.com/yukaizhao/
参与项目或技术交流：<a href="mailto:[email protected]">[email protected]</a>
</pre>
</body>
</html>