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Fixed problem with performance improvement

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- Relabelled variables to make them more meaningful
- Fixed bug with the way that the pointsPerPixel was calculated
This commit is contained in:
Mark Abbott 2012-03-13 23:35:17 +00:00
parent bfb1e71193
commit 16db900413
3 changed files with 10 additions and 10 deletions
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8
morris.coffee
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@ -148,17 +148,17 @@ class Morris.Line
# draw x axis labels
prevLabelMargin = null
xLabelMargin = 50 # make this an option?
xstep = width / @xvals.length
next_x = null
pointsPerPixel = (Math.floor(@xmax) - Math.ceil(@xmin)) / width
nextPoint = null
for i in [Math.ceil(@xmin)..Math.floor(@xmax)]
if xstep < 1 or null == next_x or i >= next_x
if null == nextPoint or i >= nextPoint
labelText = if @options.parseTime then i else @columnLabels[@columnLabels.length-i-1]
label = @r.text(transX(i), @options.marginTop + height + @options.marginBottom / 2, labelText)
.attr('font-size', @options.gridTextSize)
.attr('fill', @options.gridTextColor)
labelBox = label.getBBox()
# Calculate the next value of i to use
next_x = (labelBox.x + labelBox.width + xLabelMargin) * xstep
nextPoint = (labelBox.x + labelBox.width + xLabelMargin) * pointsPerPixel
# ensure a minimum of `xLabelMargin` pixels between labels
if prevLabelMargin is null or prevLabelMargin <= labelBox.x
prevLabelMargin = labelBox.x + labelBox.width + xLabelMargin

10
morris.js
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@ -105,7 +105,7 @@
};
Line.prototype.redraw = function() {
var c, circle, columns, coords, dx, dy, firstY, height, hideHover, hilight, hover, hoverHeight, hoverMargins, hoverSet, i, label, labelBox, labelText, lastY, left, lineY, maxYLabelWidth, next_x, path, pointGrow, pointShrink, prevHilight, prevLabelMargin, s, seriesCoords, seriesPoints, touchHandler, transX, transY, updateHilight, updateHover, v, width, x, xLabel, xLabelMargin, xstep, y, yInterval, yLabel, yLabels, _i, _j, _len, _len2, _ref, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7,
var c, circle, columns, coords, dx, dy, firstY, height, hideHover, hilight, hover, hoverHeight, hoverMargins, hoverSet, i, label, labelBox, labelText, lastY, left, lineY, maxYLabelWidth, nextPoint, path, pointGrow, pointShrink, pointsPerPixel, prevHilight, prevLabelMargin, s, seriesCoords, seriesPoints, touchHandler, transX, transY, updateHilight, updateHover, v, width, x, xLabel, xLabelMargin, y, yInterval, yLabel, yLabels, _i, _j, _len, _len2, _ref, _ref2, _ref3, _ref4, _ref5, _ref6, _ref7,
_this = this;
this.el.empty();
this.r = new Raphael(this.el[0]);
@ -136,14 +136,14 @@
}
prevLabelMargin = null;
xLabelMargin = 50;
xstep = width / this.xvals.length;
next_x = null;
pointsPerPixel = (Math.floor(this.xmax) - Math.ceil(this.xmin)) / width;
nextPoint = null;
for (i = _ref = Math.ceil(this.xmin), _ref2 = Math.floor(this.xmax); _ref <= _ref2 ? i <= _ref2 : i >= _ref2; _ref <= _ref2 ? i++ : i--) {
if (xstep < 1 || null === next_x || i >= next_x) {
if (null === nextPoint || i >= nextPoint) {
labelText = this.options.parseTime ? i : this.columnLabels[this.columnLabels.length - i - 1];
label = this.r.text(transX(i), this.options.marginTop + height + this.options.marginBottom / 2, labelText).attr('font-size', this.options.gridTextSize).attr('fill', this.options.gridTextColor);
labelBox = label.getBBox();
next_x = (labelBox.x + labelBox.width + xLabelMargin) * xstep;
nextPoint = (labelBox.x + labelBox.width + xLabelMargin) * pointsPerPixel;
if (prevLabelMargin === null || prevLabelMargin <= labelBox.x) {
prevLabelMargin = labelBox.x + labelBox.width + xLabelMargin;
} else {

2
morris.min.js vendored
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