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Draw with NSBezierPath

/ Published in: Objective C
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How to draw using NSBezierPath. Call these two methods from -drawRect.

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  1. - (void) drawArrow
  2. {
  3. 	NSLog( @"state = %i", state );
  4.  
  5. 	// background
  6. 	NSRect bounds = [self bounds];
  7. 	[[NSColor orangeColor] set];
  8. 	NSRectFill( bounds );
  9.  
  10. 	// arrow
  11. 	CGFloat width = bounds.size.width;
  12. 	CGFloat height = bounds.size.height;
  13.  
  14. 	// no alloc and so no release in the end.
  15. 	NSBezierPath* path = [NSBezierPath bezierPath];
  16.  
  17. 	[path moveToPoint: NSMakePoint( width * 0.35, height * 0.1 )];
  18.  
  19. 	[path lineToPoint: NSMakePoint( width * 0.65, height * 0.1 )];
  20. 	[path lineToPoint: NSMakePoint( width * 0.65, height * 0.6 )];
  21. 	[path lineToPoint: NSMakePoint( width * 0.9, height * 0.6 )];
  22. 	[path lineToPoint: NSMakePoint( width * 0.5, height * 0.9 )];
  23. 	[path lineToPoint: NSMakePoint( width * 0.1, height * 0.6 )];
  24. 	[path lineToPoint: NSMakePoint( width * 0.35, height * 0.6 )];
  25.  
  26. 	[path closePath];
  27.  
  28. 	[[NSColor blueColor] set];
  29. 	[path fill];
  30.  
  31. 	[[NSColor whiteColor] set];
  32. 	[path stroke];
  33. }
  34.  
  35. - (void)drawHouse
  36. {
  37. 	NSLog( @"state = %i", state );
  38. 	NSRect bounds = [self bounds];
  39. 	[[NSColor yellowColor] set];
  40. 	NSRectFill( bounds );	
  41.  
  42. 	CGFloat width = bounds.size.width;
  43. 	CGFloat height = bounds.size.height;
  44.  
  45. 	NSBezierPath *path = [NSBezierPath bezierPath];
  46.  
  47. 	[path moveToPoint: NSMakePoint( width * 0.1, height * 0.6 )];
  48.  
  49. 	[path lineToPoint: NSMakePoint( width * 0.1, height * 0.1 )];
  50. 	[path lineToPoint: NSMakePoint( width * 0.9, height * 0.1 )];
  51. 	[path lineToPoint: NSMakePoint( width * 0.9, height * 0.6 )];
  52. 	[path lineToPoint: NSMakePoint( width * 0.1, height * 0.6 )];
  53. 	[path lineToPoint: NSMakePoint( width * 0.5, height * 0.9 )];
  54. 	[path lineToPoint: NSMakePoint( width * 0.9, height * 0.6 )];
  55.  
  56. 	[path closePath];
  57.  
  58. 	[[NSColor whiteColor] set];
  59. 	[path fill];
  60.  
  61. 	[[NSColor blueColor] set];
  62. 	[path stroke];
  63. }
  64.  
  65.  
  66. - (void)drawRect:(NSRect)dirtyRect 
  67. {
  68. 	[NSGraphicsContext saveGraphicsState];
  69.  
  70. 	//[self drawHouse]; 
  71. 	[self drawArrow];
  72.  
  73. 	[NSGraphicsContext restoreGraphicsState];
  74. }

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