--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/HedgewarsMobile/MGSplitCornersView.m	Thu Feb 09 18:59:46 2012 +0100
@@ -0,0 +1,241 @@
+//
+//  MGSplitCornersView.m
+//  MGSplitView
+//
+//  Created by Matt Gemmell on 28/07/2010.
+//  Copyright 2010 Instinctive Code.
+//
+
+#import "MGSplitCornersView.h"
+
+
+@implementation MGSplitCornersView
+
+
+#pragma mark -
+#pragma mark Setup and teardown
+
+
+- (id)initWithFrame:(CGRect)frame
+{
+    if ((self = [super initWithFrame:frame])) {
+		self.contentMode = UIViewContentModeRedraw;
+		self.userInteractionEnabled = NO;
+		self.opaque = NO;
+		self.backgroundColor = [UIColor clearColor];
+		cornerRadius = 0.0; // actual value is set by the splitViewController.
+		cornersPosition = MGCornersPositionLeadingVertical;
+    }
+	
+    return self;
+}
+
+
+- (void)dealloc
+{
+	self.cornerBackgroundColor = nil;
+	
+	[super dealloc];
+}
+
+
+#pragma mark -
+#pragma mark Geometry helpers
+
+
+double deg2Rad(double degrees)
+{
+	// Converts degrees to radians.
+	return degrees * (M_PI / 180.0);
+}
+
+
+double rad2Deg(double radians)
+{
+	// Converts radians to degrees.
+	return radians * (180 / M_PI);
+}
+
+
+#pragma mark -
+#pragma mark Drawing
+
+
+- (void)drawRect:(CGRect)rect
+{
+	// Draw two appropriate corners, with cornerBackgroundColor behind them.
+	if (cornerRadius > 0) {
+		if (NO) { // just for debugging.
+			[[UIColor redColor] set];
+			UIRectFill(self.bounds);
+		}
+		
+		float maxX = CGRectGetMaxX(self.bounds);
+		float maxY = CGRectGetMaxY(self.bounds);
+		UIBezierPath *path = [UIBezierPath bezierPath];
+		CGPoint pt = CGPointZero;
+		switch (cornersPosition) {
+			case MGCornersPositionLeadingVertical: // top of screen for a left/right split
+				[path moveToPoint:pt];
+				pt.y += cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(90) endAngle:0 clockwise:YES]];
+				pt.x += cornerRadius;
+				pt.y -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path addLineToPoint:CGPointZero];
+				[path closePath];
+				
+				pt.x = maxX - cornerRadius;
+				pt.y = 0;
+				[path moveToPoint:pt];
+				pt.y = maxY;
+				[path addLineToPoint:pt];
+				pt.x += cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(90) clockwise:YES]];
+				pt.y -= cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				break;
+				
+			case MGCornersPositionTrailingVertical: // bottom of screen for a left/right split
+				pt.y = maxY;
+				[path moveToPoint:pt];
+				pt.y -= cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(270) endAngle:deg2Rad(360) clockwise:NO]];
+				pt.x += cornerRadius;
+				pt.y += cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				pt.x = maxX - cornerRadius;
+				pt.y = maxY;
+				[path moveToPoint:pt];
+				pt.y -= cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x += cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(270) clockwise:NO]];
+				pt.y += cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				break;
+				
+			case MGCornersPositionLeadingHorizontal: // left of screen for a top/bottom split
+				pt.x = 0;
+				pt.y = cornerRadius;
+				[path moveToPoint:pt];
+				pt.y -= cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x += cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(270) clockwise:NO]];
+				pt.y += cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				pt.x = 0;
+				pt.y = maxY - cornerRadius;
+				[path moveToPoint:pt];
+				pt.y = maxY;
+				[path addLineToPoint:pt];
+				pt.x += cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(180) endAngle:deg2Rad(90) clockwise:YES]];
+				pt.y -= cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				break;
+				
+			case MGCornersPositionTrailingHorizontal: // right of screen for a top/bottom split
+				pt.y = cornerRadius;
+				[path moveToPoint:pt];
+				pt.y -= cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(270) endAngle:deg2Rad(360) clockwise:NO]];
+				pt.x += cornerRadius;
+				pt.y += cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				pt.y = maxY - cornerRadius;
+				[path moveToPoint:pt];
+				pt.y += cornerRadius;
+				[path appendPath:[UIBezierPath bezierPathWithArcCenter:pt radius:cornerRadius startAngle:deg2Rad(90) endAngle:0 clockwise:YES]];
+				pt.x += cornerRadius;
+				pt.y -= cornerRadius;
+				[path addLineToPoint:pt];
+				pt.x -= cornerRadius;
+				[path addLineToPoint:pt];
+				[path closePath];
+				
+				break;
+				
+			default:
+				break;
+		}
+		
+		[self.cornerBackgroundColor set];
+		[path fill];
+	}
+}
+
+
+#pragma mark -
+#pragma mark Accessors and properties
+
+
+- (void)setCornerRadius:(float)newRadius
+{
+	if (newRadius != cornerRadius) {
+		cornerRadius = newRadius;
+		[self setNeedsDisplay];
+	}
+}
+
+
+- (void)setSplitViewController:(MGSplitViewController *)theController
+{
+	if (theController != splitViewController) {
+		splitViewController = theController;
+		[self setNeedsDisplay];
+	}
+}
+
+
+- (void)setCornersPosition:(MGCornersPosition)posn
+{
+	if (cornersPosition != posn) {
+		cornersPosition = posn;
+		[self setNeedsDisplay];
+	}
+}
+
+
+- (void)setCornerBackgroundColor:(UIColor *)color
+{
+	if (color != cornerBackgroundColor) {
+		[cornerBackgroundColor release];
+		cornerBackgroundColor = [color retain];
+		[self setNeedsDisplay];
+	}
+}
+
+
+@synthesize cornerRadius;
+@synthesize splitViewController;
+@synthesize cornersPosition;
+@synthesize cornerBackgroundColor;
+
+
+@end