fix potential crash in iOS7: ibireme#261

ibireme · ibireme · commit a358681e91fd · 2016-04-02T12:54:02.000+08:00
diff --git a/YYText/Component/YYTextEffectWindow.m b/YYText/Component/YYTextEffectWindow.m
@@ -399,7 +399,11 @@ - (void)_updateSelectionGrabberDot:(YYSelectionGrabberDot *)dot selection:(YYTex
         }
     }
     CGPoint center = [dot yy_convertPoint:CGPointMake(CGRectGetWidth(dot.frame) / 2, CGRectGetHeight(dot.frame) / 2) toViewOrWindow:self];
-    dot.mirror.center = center;
+    if (isnan(center.x) || isnan(center.y) || isinf(center.x) || isinf(center.y)) {
+        dot.mirror.hidden = YES;
+    } else {
+        dot.mirror.center = center;
+    }
 }
 
 - (void)showSelectionDot:(YYTextSelectionView *)selection {

Original file line number	Diff line number	Diff line change
`@@ -399,7 +399,11 @@ - (void)_updateSelectionGrabberDot:(YYSelectionGrabberDot *)dot selection:(YYTex`
`399`	`399`	`}`
`400`	`400`	`}`
`401`	`401`	`CGPoint center = [dot yy_convertPoint:CGPointMake(CGRectGetWidth(dot.frame) / 2, CGRectGetHeight(dot.frame) / 2) toViewOrWindow:self];`
`402`		`- dot.mirror.center = center;`
	`402`	`+ if (isnan(center.x) \|\| isnan(center.y) \|\| isinf(center.x) \|\| isinf(center.y)) {`
	`403`	`+ dot.mirror.hidden = YES;`
	`404`	`+ } else {`
	`405`	`+ dot.mirror.center = center;`
	`406`	`+ }`
`403`	`407`	`}`
`404`	`408`
`405`	`409`	`- (void)showSelectionDot:(YYTextSelectionView *)selection {`