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+/* Copyright 2011 Sven Weidauer
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#import "ArrowBox.h"
+
+@implementation ArrowBox
+
+@synthesize arrowPosition;
+@synthesize arrowSize;
+@synthesize arrowEdge;
+@synthesize cornerRadius;
+
+- (void) setArrowEdge: (ArrowEdge)newEdge
+{
+ if (arrowEdge == newEdge) {
+ return;
+ }
+
+ arrowEdge = newEdge;
+
+ [self setNeedsDisplay: YES];
+ updateShadow = YES;
+}
+
+
+- (void) setArrowSize: (CGFloat)newSize
+{
+ arrowSize = newSize;
+ [self setNeedsDisplay: YES];
+ updateShadow = YES;
+}
+
+
+- (void) setCornerRadius: (CGFloat)newRadius
+{
+ cornerRadius = newRadius;
+ [self setNeedsDisplay: YES];
+ updateShadow = YES;
+}
+
+- (void) setArrowPosition: (CGFloat)newPosition
+{
+ arrowPosition = newPosition;
+
+ [self setNeedsDisplay: YES];
+ updateShadow = YES;
+}
+
+
+- (id)initWithFrame:(NSRect)frame
+{
+ self = [super initWithFrame:frame];
+ if (self) {
+ arrowPosition = 50;
+ cornerRadius = 10;
+ arrowSize = 15;
+ }
+ return self;
+}
+
+- (void)drawRect:(NSRect)dirtyRect
+{
+ [[NSColor clearColor] set];
+ [NSBezierPath fillRect: dirtyRect];
+
+ NSBezierPath *path = [NSBezierPath bezierPath];
+
+ NSRect bounds = [self convertRectToBase: NSInsetRect( [self bounds], 2, 2 )];
+ bounds.origin.x = floor( bounds.origin.x );
+ bounds.origin.y = floor( bounds.origin.y );
+ bounds.size.width = floor( bounds.size.width );
+ bounds.size.height = floor( bounds.size.height );
+ bounds = [self convertRectFromBase: bounds];
+
+ const CGFloat right = bounds.size.width - arrowSize;
+ const CGFloat top = bounds.size.height - arrowSize;
+ const CGFloat left = arrowSize;
+ const CGFloat bottom = arrowSize;
+
+ [path setLineJoinStyle:NSRoundLineJoinStyle];
+
+ [path moveToPoint: NSMakePoint( right - cornerRadius, top )];
+
+ if (arrowEdge == ArrowTopEdge) {
+ [path lineToPoint: NSMakePoint( arrowPosition + arrowSize, top )];
+ [path lineToPoint: NSMakePoint( arrowPosition, top + arrowSize )];
+ [path lineToPoint: NSMakePoint( arrowPosition - arrowSize, top )];
+ }
+
+ [path appendBezierPathWithArcFromPoint: NSMakePoint( left, top )
+ toPoint: NSMakePoint( left, top - cornerRadius )
+ radius: cornerRadius];
+
+ if (arrowEdge == ArrowLeftEdge) {
+ [path lineToPoint: NSMakePoint( left, bottom + arrowPosition + arrowSize )];
+ [path lineToPoint: NSMakePoint( left - arrowSize, bottom + arrowPosition )];
+ [path lineToPoint: NSMakePoint( left, bottom + arrowPosition - arrowSize )];
+ }
+
+ [path appendBezierPathWithArcFromPoint: NSMakePoint( left, bottom )
+ toPoint: NSMakePoint( left + cornerRadius, bottom )
+ radius: cornerRadius];
+
+ if (arrowEdge == ArrowBottomEdge) {
+ [path lineToPoint: NSMakePoint( arrowPosition - arrowSize, bottom )];
+ [path lineToPoint: NSMakePoint( arrowPosition, bottom - arrowSize )];
+ [path lineToPoint: NSMakePoint( arrowPosition + arrowSize, bottom )];
+ }
+
+ [path appendBezierPathWithArcFromPoint: NSMakePoint( right, bottom )
+ toPoint: NSMakePoint( right, bottom + cornerRadius )
+ radius: cornerRadius];
+
+ if (arrowEdge == ArrowRightEdge) {
+ [path lineToPoint: NSMakePoint( right, bottom + arrowPosition - arrowSize )];
+ [path lineToPoint: NSMakePoint( right + arrowSize, bottom + arrowPosition )];
+ [path lineToPoint: NSMakePoint( right, bottom + arrowPosition + arrowSize )];
+ }
+
+ [path appendBezierPathWithArcFromPoint: NSMakePoint( right, top )
+ toPoint: NSMakePoint( right - cornerRadius, top )
+ radius: cornerRadius];
+ [path closePath];
+
+ [[NSColor colorWithDeviceWhite: 1.0 alpha: 0.4] set];
+ [[NSColor colorWithDeviceWhite: 0.0 alpha: 0.75] setFill];
+
+ NSAffineTransform *transform = [NSAffineTransform transform];
+ [transform translateXBy: bounds.origin.x yBy: bounds.origin.y];
+ [transform concat];
+
+ [path setLineWidth: 2.0];
+ [path fill];
+ [path stroke];
+
+ if (updateShadow) {
+ [[self window] invalidateShadow];
+ [[self window] update];
+ updateShadow = NO;
+ }
+}
+
+@end