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use UIGraphicsBeginImageContextWithOptions(size, NO, 0.0) to take advantage of retina display scale factor #2

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use UIGraphicsBeginImageContextWithOptions(size, NO, 0.0) to take advantage of retina display scale factor #2

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5 changes: 4 additions & 1 deletion ToolDrawerView.m
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Original file line number Diff line number Diff line change
Expand Up @@ -133,7 +133,10 @@ - (void)createTabButton{

// Draw the cheveron button in either the filled or empty state;
- (UIImage *)createTabButtonImageWithFillColor:(UIColor *)fillColor{
UIGraphicsBeginImageContext(CGSizeMake(24.0, 24.0));

// Use UIGraphicsBeginImageContextWithOptions(size, NO, 0.0) to take advantage of retina display scale factor
// The 0.0 value supplied here is a “magic” number, which sets “the scale factor … to the scale factor of the device’s main screen”
UIGraphicsBeginImageContextWithOptions(CGSizeMake(24.0, 24.0), NO, 0);
CGContextRef ctx = UIGraphicsGetCurrentContext();

CGContextSetStrokeColorWithColor(ctx, [UIColor colorWithRed:0 green:0 blue:0 alpha:0.6].CGColor);
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