forked from qwerty/tupali
505 lines
22 KiB
JavaScript
505 lines
22 KiB
JavaScript
/* *
|
|
*
|
|
* License: www.highcharts.com/license
|
|
* Author: Torstein Honsi, Christer Vasseng
|
|
*
|
|
* This module serves as a fallback for the Boost module in IE9 and IE10. Newer
|
|
* browsers support WebGL which is faster.
|
|
*
|
|
* It is recommended to include this module in conditional comments targeting
|
|
* IE9 and IE10.
|
|
*
|
|
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
|
|
*
|
|
* */
|
|
'use strict';
|
|
import H from '../parts/Globals.js';
|
|
import Color from '../parts/Color.js';
|
|
var color = Color.parse;
|
|
import U from '../parts/Utilities.js';
|
|
var addEvent = U.addEvent, extend = U.extend, fireEvent = U.fireEvent, isNumber = U.isNumber, merge = U.merge, pick = U.pick, wrap = U.wrap;
|
|
import '../parts/Series.js';
|
|
import '../parts/Options.js';
|
|
var win = H.win, doc = win.document, noop = function () { }, Series = H.Series, seriesTypes = H.seriesTypes, CHUNK_SIZE = 50000, destroyLoadingDiv;
|
|
/* eslint-disable no-invalid-this, valid-jsdoc */
|
|
/**
|
|
* Initialize the canvas boost.
|
|
*
|
|
* @function Highcharts.initCanvasBoost
|
|
*/
|
|
H.initCanvasBoost = function () {
|
|
if (H.seriesTypes.heatmap) {
|
|
wrap(H.seriesTypes.heatmap.prototype, 'drawPoints', function () {
|
|
var chart = this.chart, ctx = this.getContext(), inverted = this.chart.inverted, xAxis = this.xAxis, yAxis = this.yAxis;
|
|
if (ctx) {
|
|
// draw the columns
|
|
this.points.forEach(function (point) {
|
|
var plotY = point.plotY, shapeArgs, pointAttr;
|
|
if (typeof plotY !== 'undefined' &&
|
|
!isNaN(plotY) &&
|
|
point.y !== null) {
|
|
shapeArgs = point.shapeArgs;
|
|
if (!chart.styledMode) {
|
|
pointAttr = point.series.pointAttribs(point);
|
|
}
|
|
else {
|
|
pointAttr = point.series.colorAttribs(point);
|
|
}
|
|
ctx.fillStyle = pointAttr.fill;
|
|
if (inverted) {
|
|
ctx.fillRect(yAxis.len - shapeArgs.y + xAxis.left, xAxis.len - shapeArgs.x + yAxis.top, -shapeArgs.height, -shapeArgs.width);
|
|
}
|
|
else {
|
|
ctx.fillRect(shapeArgs.x + xAxis.left, shapeArgs.y + yAxis.top, shapeArgs.width, shapeArgs.height);
|
|
}
|
|
}
|
|
});
|
|
this.canvasToSVG();
|
|
}
|
|
else {
|
|
this.chart.showLoading('Your browser doesn\'t support HTML5 canvas, <br>' +
|
|
'please use a modern browser');
|
|
// Uncomment this to provide low-level (slow) support in oldIE.
|
|
// It will cause script errors on charts with more than a few
|
|
// thousand points.
|
|
// arguments[0].call(this);
|
|
}
|
|
});
|
|
}
|
|
extend(Series.prototype, {
|
|
/**
|
|
* Create a hidden canvas to draw the graph on. The contents is later
|
|
* copied over to an SVG image element.
|
|
*
|
|
* @private
|
|
* @function Highcharts.Series#getContext
|
|
*/
|
|
getContext: function () {
|
|
var chart = this.chart, width = chart.chartWidth, height = chart.chartHeight, targetGroup = chart.seriesGroup || this.group, target = this, ctx, swapXY = function (proceed, x, y, a, b, c, d) {
|
|
proceed.call(this, y, x, a, b, c, d);
|
|
};
|
|
if (chart.isChartSeriesBoosting()) {
|
|
target = chart;
|
|
targetGroup = chart.seriesGroup;
|
|
}
|
|
ctx = target.ctx;
|
|
if (!target.canvas) {
|
|
target.canvas = doc.createElement('canvas');
|
|
target.renderTarget = chart.renderer
|
|
.image('', 0, 0, width, height)
|
|
.addClass('highcharts-boost-canvas')
|
|
.add(targetGroup);
|
|
target.ctx = ctx = target.canvas.getContext('2d');
|
|
if (chart.inverted) {
|
|
['moveTo', 'lineTo', 'rect', 'arc'].forEach(function (fn) {
|
|
wrap(ctx, fn, swapXY);
|
|
});
|
|
}
|
|
target.boostCopy = function () {
|
|
target.renderTarget.attr({
|
|
href: target.canvas.toDataURL('image/png')
|
|
});
|
|
};
|
|
target.boostClear = function () {
|
|
ctx.clearRect(0, 0, target.canvas.width, target.canvas.height);
|
|
if (target === this) {
|
|
target.renderTarget.attr({ href: '' });
|
|
}
|
|
};
|
|
target.boostClipRect = chart.renderer.clipRect();
|
|
target.renderTarget.clip(target.boostClipRect);
|
|
}
|
|
else if (!(target instanceof H.Chart)) {
|
|
// ctx.clearRect(0, 0, width, height);
|
|
}
|
|
if (target.canvas.width !== width) {
|
|
target.canvas.width = width;
|
|
}
|
|
if (target.canvas.height !== height) {
|
|
target.canvas.height = height;
|
|
}
|
|
target.renderTarget.attr({
|
|
x: 0,
|
|
y: 0,
|
|
width: width,
|
|
height: height,
|
|
style: 'pointer-events: none',
|
|
href: ''
|
|
});
|
|
target.boostClipRect.attr(chart.getBoostClipRect(target));
|
|
return ctx;
|
|
},
|
|
/**
|
|
* Draw the canvas image inside an SVG image
|
|
*
|
|
* @private
|
|
* @function Highcharts.Series#canvasToSVG
|
|
*/
|
|
canvasToSVG: function () {
|
|
if (!this.chart.isChartSeriesBoosting()) {
|
|
if (this.boostCopy || this.chart.boostCopy) {
|
|
(this.boostCopy || this.chart.boostCopy)();
|
|
}
|
|
}
|
|
else {
|
|
if (this.boostClear) {
|
|
this.boostClear();
|
|
}
|
|
}
|
|
},
|
|
cvsLineTo: function (ctx, clientX, plotY) {
|
|
ctx.lineTo(clientX, plotY);
|
|
},
|
|
renderCanvas: function () {
|
|
var series = this, options = series.options, chart = series.chart, xAxis = this.xAxis, yAxis = this.yAxis, activeBoostSettings = chart.options.boost || {}, boostSettings = {
|
|
timeRendering: activeBoostSettings.timeRendering || false,
|
|
timeSeriesProcessing: activeBoostSettings.timeSeriesProcessing || false,
|
|
timeSetup: activeBoostSettings.timeSetup || false
|
|
}, ctx, c = 0, xData = series.processedXData, yData = series.processedYData, rawData = options.data, xExtremes = xAxis.getExtremes(), xMin = xExtremes.min, xMax = xExtremes.max, yExtremes = yAxis.getExtremes(), yMin = yExtremes.min, yMax = yExtremes.max, pointTaken = {}, lastClientX, sampling = !!series.sampling, points, r = options.marker && options.marker.radius, cvsDrawPoint = this.cvsDrawPoint, cvsLineTo = options.lineWidth ? this.cvsLineTo : void 0, cvsMarker = (r && r <= 1 ?
|
|
this.cvsMarkerSquare :
|
|
this.cvsMarkerCircle), strokeBatch = this.cvsStrokeBatch || 1000, enableMouseTracking = options.enableMouseTracking !== false, lastPoint, threshold = options.threshold, yBottom = yAxis.getThreshold(threshold), hasThreshold = isNumber(threshold), translatedThreshold = yBottom, doFill = this.fill, isRange = (series.pointArrayMap &&
|
|
series.pointArrayMap.join(',') === 'low,high'), isStacked = !!options.stacking, cropStart = series.cropStart || 0, loadingOptions = chart.options.loading, requireSorting = series.requireSorting, wasNull, connectNulls = options.connectNulls, useRaw = !xData, minVal, maxVal, minI, maxI, index, sdata = (isStacked ?
|
|
series.data :
|
|
(xData || rawData)), fillColor = (series.fillOpacity ?
|
|
new Color(series.color).setOpacity(pick(options.fillOpacity, 0.75)).get() :
|
|
series.color),
|
|
//
|
|
stroke = function () {
|
|
if (doFill) {
|
|
ctx.fillStyle = fillColor;
|
|
ctx.fill();
|
|
}
|
|
else {
|
|
ctx.strokeStyle = series.color;
|
|
ctx.lineWidth = options.lineWidth;
|
|
ctx.stroke();
|
|
}
|
|
},
|
|
//
|
|
drawPoint = function (clientX, plotY, yBottom, i) {
|
|
if (c === 0) {
|
|
ctx.beginPath();
|
|
if (cvsLineTo) {
|
|
ctx.lineJoin = 'round';
|
|
}
|
|
}
|
|
if (chart.scroller &&
|
|
series.options.className ===
|
|
'highcharts-navigator-series') {
|
|
plotY += chart.scroller.top;
|
|
if (yBottom) {
|
|
yBottom += chart.scroller.top;
|
|
}
|
|
}
|
|
else {
|
|
plotY += chart.plotTop;
|
|
}
|
|
clientX += chart.plotLeft;
|
|
if (wasNull) {
|
|
ctx.moveTo(clientX, plotY);
|
|
}
|
|
else {
|
|
if (cvsDrawPoint) {
|
|
cvsDrawPoint(ctx, clientX, plotY, yBottom, lastPoint);
|
|
}
|
|
else if (cvsLineTo) {
|
|
cvsLineTo(ctx, clientX, plotY);
|
|
}
|
|
else if (cvsMarker) {
|
|
cvsMarker.call(series, ctx, clientX, plotY, r, i);
|
|
}
|
|
}
|
|
// We need to stroke the line for every 1000 pixels. It will
|
|
// crash the browser memory use if we stroke too
|
|
// infrequently.
|
|
c = c + 1;
|
|
if (c === strokeBatch) {
|
|
stroke();
|
|
c = 0;
|
|
}
|
|
// Area charts need to keep track of the last point
|
|
lastPoint = {
|
|
clientX: clientX,
|
|
plotY: plotY,
|
|
yBottom: yBottom
|
|
};
|
|
},
|
|
//
|
|
compareX = options.findNearestPointBy === 'x',
|
|
//
|
|
xDataFull = (this.xData ||
|
|
this.options.xData ||
|
|
this.processedXData ||
|
|
false),
|
|
//
|
|
addKDPoint = function (clientX, plotY, i) {
|
|
// Shaves off about 60ms compared to repeated concatenation
|
|
index = compareX ? clientX : clientX + ',' + plotY;
|
|
// The k-d tree requires series points.
|
|
// Reduce the amount of points, since the time to build the
|
|
// tree increases exponentially.
|
|
if (enableMouseTracking && !pointTaken[index]) {
|
|
pointTaken[index] = true;
|
|
if (chart.inverted) {
|
|
clientX = xAxis.len - clientX;
|
|
plotY = yAxis.len - plotY;
|
|
}
|
|
points.push({
|
|
x: xDataFull ?
|
|
xDataFull[cropStart + i] :
|
|
false,
|
|
clientX: clientX,
|
|
plotX: clientX,
|
|
plotY: plotY,
|
|
i: cropStart + i
|
|
});
|
|
}
|
|
};
|
|
if (this.renderTarget) {
|
|
this.renderTarget.attr({ 'href': '' });
|
|
}
|
|
// If we are zooming out from SVG mode, destroy the graphics
|
|
if (this.points || this.graph) {
|
|
this.destroyGraphics();
|
|
}
|
|
// The group
|
|
series.plotGroup('group', 'series', series.visible ? 'visible' : 'hidden', options.zIndex, chart.seriesGroup);
|
|
series.markerGroup = series.group;
|
|
addEvent(series, 'destroy', function () {
|
|
// Prevent destroy twice
|
|
series.markerGroup = null;
|
|
});
|
|
points = this.points = [];
|
|
ctx = this.getContext();
|
|
series.buildKDTree = noop; // Do not start building while drawing
|
|
if (this.boostClear) {
|
|
this.boostClear();
|
|
}
|
|
// if (this.canvas) {
|
|
// ctx.clearRect(
|
|
// 0,
|
|
// 0,
|
|
// this.canvas.width,
|
|
// this.canvas.height
|
|
// );
|
|
// }
|
|
if (!this.visible) {
|
|
return;
|
|
}
|
|
// Display a loading indicator
|
|
if (rawData.length > 99999) {
|
|
chart.options.loading = merge(loadingOptions, {
|
|
labelStyle: {
|
|
backgroundColor: color('#ffffff').setOpacity(0.75).get(),
|
|
padding: '1em',
|
|
borderRadius: '0.5em'
|
|
},
|
|
style: {
|
|
backgroundColor: 'none',
|
|
opacity: 1
|
|
}
|
|
});
|
|
U.clearTimeout(destroyLoadingDiv);
|
|
chart.showLoading('Drawing...');
|
|
chart.options.loading = loadingOptions; // reset
|
|
}
|
|
if (boostSettings.timeRendering) {
|
|
console.time('canvas rendering'); // eslint-disable-line no-console
|
|
}
|
|
// Loop over the points
|
|
H.eachAsync(sdata, function (d, i) {
|
|
var x, y, clientX, plotY, isNull, low, isNextInside = false, isPrevInside = false, nx = false, px = false, chartDestroyed = typeof chart.index === 'undefined', isYInside = true;
|
|
if (!chartDestroyed) {
|
|
if (useRaw) {
|
|
x = d[0];
|
|
y = d[1];
|
|
if (sdata[i + 1]) {
|
|
nx = sdata[i + 1][0];
|
|
}
|
|
if (sdata[i - 1]) {
|
|
px = sdata[i - 1][0];
|
|
}
|
|
}
|
|
else {
|
|
x = d;
|
|
y = yData[i];
|
|
if (sdata[i + 1]) {
|
|
nx = sdata[i + 1];
|
|
}
|
|
if (sdata[i - 1]) {
|
|
px = sdata[i - 1];
|
|
}
|
|
}
|
|
if (nx && nx >= xMin && nx <= xMax) {
|
|
isNextInside = true;
|
|
}
|
|
if (px && px >= xMin && px <= xMax) {
|
|
isPrevInside = true;
|
|
}
|
|
// Resolve low and high for range series
|
|
if (isRange) {
|
|
if (useRaw) {
|
|
y = d.slice(1, 3);
|
|
}
|
|
low = y[0];
|
|
y = y[1];
|
|
}
|
|
else if (isStacked) {
|
|
x = d.x;
|
|
y = d.stackY;
|
|
low = y - d.y;
|
|
}
|
|
isNull = y === null;
|
|
// Optimize for scatter zooming
|
|
if (!requireSorting) {
|
|
isYInside = y >= yMin && y <= yMax;
|
|
}
|
|
if (!isNull &&
|
|
((x >= xMin && x <= xMax && isYInside) ||
|
|
(isNextInside || isPrevInside))) {
|
|
clientX = Math.round(xAxis.toPixels(x, true));
|
|
if (sampling) {
|
|
if (typeof minI === 'undefined' ||
|
|
clientX === lastClientX) {
|
|
if (!isRange) {
|
|
low = y;
|
|
}
|
|
if (typeof maxI === 'undefined' || y > maxVal) {
|
|
maxVal = y;
|
|
maxI = i;
|
|
}
|
|
if (typeof minI === 'undefined' ||
|
|
low < minVal) {
|
|
minVal = low;
|
|
minI = i;
|
|
}
|
|
}
|
|
// Add points and reset
|
|
if (clientX !== lastClientX) {
|
|
// maxI also a number:
|
|
if (typeof minI !== 'undefined') {
|
|
plotY = yAxis.toPixels(maxVal, true);
|
|
yBottom = yAxis.toPixels(minVal, true);
|
|
drawPoint(clientX, hasThreshold ?
|
|
Math.min(plotY, translatedThreshold) : plotY, hasThreshold ?
|
|
Math.max(yBottom, translatedThreshold) : yBottom, i);
|
|
addKDPoint(clientX, plotY, maxI);
|
|
if (yBottom !== plotY) {
|
|
addKDPoint(clientX, yBottom, minI);
|
|
}
|
|
}
|
|
minI = maxI = void 0;
|
|
lastClientX = clientX;
|
|
}
|
|
}
|
|
else {
|
|
plotY = Math.round(yAxis.toPixels(y, true));
|
|
drawPoint(clientX, plotY, yBottom, i);
|
|
addKDPoint(clientX, plotY, i);
|
|
}
|
|
}
|
|
wasNull = isNull && !connectNulls;
|
|
if (i % CHUNK_SIZE === 0) {
|
|
if (series.boostCopy || series.chart.boostCopy) {
|
|
(series.boostCopy || series.chart.boostCopy)();
|
|
}
|
|
}
|
|
}
|
|
return !chartDestroyed;
|
|
}, function () {
|
|
var loadingDiv = chart.loadingDiv, loadingShown = chart.loadingShown;
|
|
stroke();
|
|
// if (series.boostCopy || series.chart.boostCopy) {
|
|
// (series.boostCopy || series.chart.boostCopy)();
|
|
// }
|
|
series.canvasToSVG();
|
|
if (boostSettings.timeRendering) {
|
|
console.timeEnd('canvas rendering'); // eslint-disable-line no-console
|
|
}
|
|
fireEvent(series, 'renderedCanvas');
|
|
// Do not use chart.hideLoading, as it runs JS animation and
|
|
// will be blocked by buildKDTree. CSS animation looks good, but
|
|
// then it must be deleted in timeout. If we add the module to
|
|
// core, change hideLoading so we can skip this block.
|
|
if (loadingShown) {
|
|
extend(loadingDiv.style, {
|
|
transition: 'opacity 250ms',
|
|
opacity: 0
|
|
});
|
|
chart.loadingShown = false;
|
|
destroyLoadingDiv = setTimeout(function () {
|
|
if (loadingDiv.parentNode) { // In exporting it is falsy
|
|
loadingDiv.parentNode.removeChild(loadingDiv);
|
|
}
|
|
chart.loadingDiv = chart.loadingSpan = null;
|
|
}, 250);
|
|
}
|
|
// Go back to prototype, ready to build
|
|
delete series.buildKDTree;
|
|
series.buildKDTree();
|
|
// Don't do async on export, the exportChart, getSVGForExport and
|
|
// getSVG methods are not chained for it.
|
|
}, chart.renderer.forExport ? Number.MAX_VALUE : void 0);
|
|
}
|
|
});
|
|
seriesTypes.scatter.prototype.cvsMarkerCircle = function (ctx, clientX, plotY, r) {
|
|
ctx.moveTo(clientX, plotY);
|
|
ctx.arc(clientX, plotY, r, 0, 2 * Math.PI, false);
|
|
};
|
|
// Rect is twice as fast as arc, should be used for small markers
|
|
seriesTypes.scatter.prototype.cvsMarkerSquare = function (ctx, clientX, plotY, r) {
|
|
ctx.rect(clientX - r, plotY - r, r * 2, r * 2);
|
|
};
|
|
seriesTypes.scatter.prototype.fill = true;
|
|
if (seriesTypes.bubble) {
|
|
seriesTypes.bubble.prototype.cvsMarkerCircle = function (ctx, clientX, plotY, r, i) {
|
|
ctx.moveTo(clientX, plotY);
|
|
ctx.arc(clientX, plotY, this.radii && this.radii[i], 0, 2 * Math.PI, false);
|
|
};
|
|
seriesTypes.bubble.prototype.cvsStrokeBatch = 1;
|
|
}
|
|
extend(seriesTypes.area.prototype, {
|
|
cvsDrawPoint: function (ctx, clientX, plotY, yBottom, lastPoint) {
|
|
if (lastPoint && clientX !== lastPoint.clientX) {
|
|
ctx.moveTo(lastPoint.clientX, lastPoint.yBottom);
|
|
ctx.lineTo(lastPoint.clientX, lastPoint.plotY);
|
|
ctx.lineTo(clientX, plotY);
|
|
ctx.lineTo(clientX, yBottom);
|
|
}
|
|
},
|
|
fill: true,
|
|
fillOpacity: true,
|
|
sampling: true
|
|
});
|
|
extend(seriesTypes.column.prototype, {
|
|
cvsDrawPoint: function (ctx, clientX, plotY, yBottom) {
|
|
ctx.rect(clientX - 1, plotY, 1, yBottom - plotY);
|
|
},
|
|
fill: true,
|
|
sampling: true
|
|
});
|
|
H.Chart.prototype.callbacks.push(function (chart) {
|
|
/**
|
|
* @private
|
|
*/
|
|
function canvasToSVG() {
|
|
if (chart.boostCopy) {
|
|
chart.boostCopy();
|
|
}
|
|
}
|
|
/**
|
|
* @private
|
|
*/
|
|
function clear() {
|
|
if (chart.renderTarget) {
|
|
chart.renderTarget.attr({ href: '' });
|
|
}
|
|
if (chart.canvas) {
|
|
chart.canvas.getContext('2d').clearRect(0, 0, chart.canvas.width, chart.canvas.height);
|
|
}
|
|
}
|
|
addEvent(chart, 'predraw', clear);
|
|
addEvent(chart, 'render', canvasToSVG);
|
|
});
|
|
};
|