No Annual Fee Credit Cards

@@ -257,6 +257,7 @@ var Scale = Element.extend({
  bottom: 0
  }, margins);
 
+ me._labelSizes = null;
  me._maxLabelLines = 0;
  me.longestLabelWidth = 0;
  me.longestTextCache = me.longestTextCache || {};
@@ -419,31 +420,31 @@ var Scale = Element.extend({
  var labelRotation = minRotation;
  var labelSizes, maxLabelWidth, maxLabelHeight, maxWidth, tickWidth, maxHeight, maxLabelDiagonal;
 
- if (me._isVisible() && tickOpts.display) {
- labelSizes = me._labelSizes = computeLabelSizes(me.ctx, parseTickFontOptions(tickOpts), ticks, me.longestTextCache);
-
-  if (minRotation < maxRotation && ticks.length > 1 && me.isHorizontal()) {
- maxLabelWidth = labelSizes.widest.width;
-  maxLabelHeight = labelSizes.highest.height - labelSizes.highest.offset;
-
-  // Estimate the width of each grid based on the canvas width, the maximum
- // label width and the number of tick intervals
-  maxWidth = Math.min(me.maxWidth, me.chart.width - maxLabelWidth);
-  tickWidth = options.offset ? me.maxWidth / ticks.length : maxWidth / (ticks.length - 1);
-
-  // Allow 3 pixels x2 padding either side for label readability
- if (maxLabelWidth + 6 > tickWidth) {
-  tickWidth = maxWidth / (ticks.length - (options.offset ? 0.5 : 1));
-  maxHeight = me.maxHeight - getTickMarkLength(options.gridLines)
-  - tickOpts.padding - getScaleLabelHeight(options.scaleLabel);
-  maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);
-  labelRotation = helpers.toDegrees(Math.min(
-  Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)),
-  Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal)
-  ));
-  labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));
-  }
- }
+ if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || ticks.length <= 1 || !me.isHorizontal()) {
+ me.labelRotation = minRotation;
+ return;
+ }
+
+ labelSizes = me._getLabelSizes();
+ maxLabelWidth = labelSizes.widest.width;
+ maxLabelHeight = labelSizes.highest.height - labelSizes.highest.offset;
+
+ // Estimate the width of each grid based on the canvas width, the maximum
+ // label width and the number of tick intervals
+ maxWidth = Math.min(me.maxWidth, me.chart.width - maxLabelWidth);
+ tickWidth = options.offset ? me.maxWidth / ticks.length : maxWidth / (ticks.length - 1);
+
+ // Allow 3 pixels x2 padding either side for label readability
+ if (maxLabelWidth + 6 > tickWidth) {
+ tickWidth = maxWidth / (ticks.length - (options.offset ? 0.5 : 1));
+ maxHeight = me.maxHeight - getTickMarkLength(options.gridLines)
+ - tickOpts.padding - getScaleLabelHeight(options.scaleLabel);
+ maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);
+ labelRotation = helpers.toDegrees(Math.min(
+ Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)),
+ Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal)
+ ));
+ labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));
  }
 
  me.labelRotation = labelRotation;
@@ -491,7 +492,7 @@ var Scale = Element.extend({
  // Don't bother fitting the ticks if we are not showing the labels
  if (tickOpts.display && display) {
  var tickFonts = parseTickFontOptions(tickOpts);
- var labelSizes = me._labelSizes;
+ var labelSizes = me._getLabelSizes();
  var firstLabelSize = labelSizes.first;
  var lastLabelSize = labelSizes.last;
  var widestLabelSize = labelSizes.widest;
@@ -501,8 +502,6 @@ var Scale = Element.extend({
 
  if (isHorizontal) {
  // A horizontal axis is more constrained by the height.
- me.longestLabelWidth = widestLabelSize.width;
-
  var isRotated = me.labelRotation !== 0;
  var angleRadians = helpers.toRadians(me.labelRotation);
  var cosRotation = Math.cos(angleRadians);
@@ -610,8 +609,23 @@ var Scale = Element.extend({
  },
 
  /**
- * @private
- */
+ * @private
+ */
+ _getLabelSizes: function() {
+ var me = this;
+ var labelSizes = me._labelSizes;
+
+ if (!labelSizes) {
+ me._labelSizes = labelSizes = computeLabelSizes(me.ctx, parseTickFontOptions(me.options.ticks), me.getTicks(), me.longestTextCache);
+ me.longestLabelWidth = labelSizes.widest.width;
+ }
+
+ return labelSizes;
+ },
+
+ /**
+ * @private
+ */
  _parseValue: function(value) {
  var start, end, min, max;
 
@@ -782,7 +796,7 @@ var Scale = Element.extend({
  var cos = Math.abs(Math.cos(rot));
  var sin = Math.abs(Math.sin(rot));
 
- var labelSizes = me._labelSizes;
+ var labelSizes = me._getLabelSizes();
  var padding = optionTicks.autoSkipPadding || 0;
  var w = labelSizes ? labelSizes.widest.width + padding : 0;
  var h = labelSizes ? labelSizes.highest.height + padding : 0;