Fix a bug when all values in bar chart is zero.

xhacker · xhacker · commit 42b6f7df9423 · 2014-12-21T00:13:34.000-08:00
diff --git a/TEAChart/TEABarChart.m b/TEAChart/TEABarChart.m
@@ -74,7 +74,7 @@ - (void)drawRect:(CGRect)rect
 
     for (NSInteger i = 0; i < numberOfBars; i += 1)
     {
-        CGFloat barHeight = barMaxHeight * [self.data[i] floatValue] / max;
+        CGFloat barHeight = (max == 0 ? 0 : barMaxHeight * [self.data[i] floatValue] / max);
         if (barHeight > barMaxHeight) {
             barHeight = barMaxHeight;
         }

Original file line number	Diff line number	Diff line change
`@@ -74,7 +74,7 @@ - (void)drawRect:(CGRect)rect`
`74`	`74`
`75`	`75`	`for (NSInteger i = 0; i < numberOfBars; i += 1)`
`76`	`76`	`{`
`77`		`- CGFloat barHeight = barMaxHeight * [self.data[i] floatValue] / max;`
	`77`	`+ CGFloat barHeight = (max == 0 ? 0 : barMaxHeight * [self.data[i] floatValue] / max);`
`78`	`78`	`if (barHeight > barMaxHeight) {`
`79`	`79`	`barHeight = barMaxHeight;`
`80`	`80`	`}`