From 62368c2a6d149927d3c9a153865e52ab83707609 Mon Sep 17 00:00:00 2001
From: Sam Soffes <sam@soff.es>
Date: Mon, 29 Jul 2013 17:01:09 -0400
Subject: [PATCH] Add `useThinGradients` and fix running on iOS 6 when compiled
 with iOS 7.

---
 SAMGradientView/SAMGradientView.h |  7 +++++++
 SAMGradientView/SAMGradientView.m | 17 ++++++++++++-----
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/SAMGradientView/SAMGradientView.h b/SAMGradientView/SAMGradientView.h
index 7b56363..498994a 100644
--- a/SAMGradientView/SAMGradientView.h
+++ b/SAMGradientView/SAMGradientView.h
@@ -71,6 +71,13 @@ typedef enum : NSUInteger {
 /// @name Drawing the Borders
 ///--------------------------
 
+/**
+ Use thin borders.
+
+ 1px borders will be drawn instead of 1pt borders. The default is `NO`.
+ */
+@property (nonatomic) BOOL useThinBorders;
+
 /**
  The top border color. The default is `nil`.
 
diff --git a/SAMGradientView/SAMGradientView.m b/SAMGradientView/SAMGradientView.m
index d4ea6c0..b0b34b1 100644
--- a/SAMGradientView/SAMGradientView.m
+++ b/SAMGradientView/SAMGradientView.m
@@ -20,6 +20,7 @@ @implementation SAMGradientView
 @synthesize gradientColors = _gradientColors;
 @synthesize gradientLocations = _gradientLocations;
 @synthesize gradientDirection = _gradientDirection;
+@synthesize useThinBorders = _useThinBorders;
 @synthesize topBorderColor = _topBorderColor;
 @synthesize topInsetColor = _topInsetColor;
 @synthesize rightBorderColor = _rightBorderColor;
@@ -84,6 +85,12 @@ - (void)setDimmedGradientColors:(NSArray *)colors {
 #endif
 
 
+- (void)setUseThinBorders:(BOOL)useThinBorders {
+	_useThinBorders = useThinBorders;
+	[self setNeedsDisplay];
+}
+
+
 - (void)setTopBorderColor:(UIColor *)topBorderColor {
 	_topBorderColor = topBorderColor;
 	[self setNeedsDisplay];
@@ -161,7 +168,7 @@ - (void)drawRect:(CGRect)rect {
 	CGContextRef context = UIGraphicsGetCurrentContext();
 
 	CGSize size = self.bounds.size;
-	CGFloat const borderWidth = 1.0f;
+	CGFloat borderWidth = self.useThinBorders ? 1.0f / [[UIScreen mainScreen] scale] : 1.0f;
 
 	// Gradient
 	if (self.gradient) {
@@ -184,14 +191,14 @@ - (void)drawRect:(CGRect)rect {
 		}
 	}
 
-	CGFloat sideY = self.topBorderColor ? 1.0f : 0.0f;
+	CGFloat sideY = self.topBorderColor ? borderWidth : 0.0f;
 	CGFloat sideHeight = size.height;
 	if (self.topBorderColor) {
-		sideHeight -= 1.0f;
+		sideHeight -= borderWidth;
 	}
 
 	if (self.bottomBorderColor) {
-		sideHeight -= 1.0f;
+		sideHeight -= borderWidth;
 	}
 
 	// Right
@@ -252,7 +259,7 @@ - (void)initialize {
 
 - (void)refreshGradient {
 #ifdef __IPHONE_7_0
-	if (self.tintAdjustmentMode == UIViewTintAdjustmentModeDimmed) {
+	if ([self respondsToSelector:@selector(tintAdjustmentMode)] && self.tintAdjustmentMode == UIViewTintAdjustmentModeDimmed) {
 		NSArray *locations = self.dimmedGradientColors.count == self.gradientLocations.count ? self.gradientLocations : nil;
 		self.gradient = SAMGradientCreateWithColorsAndLocations(self.dimmedGradientColors, locations);
 		return;