ITTSWBackgroundView.m

   1 #import "ITTSWBackgroundView.h"
   2
   3
   4 @implementation ITTSWBackgroundView
   5
   6 - (id)initWithFrame:(NSRect)frameRect
   7 {
   8     if ( (self = [super initWithFrame:frameRect]) ) {
   9         _path = [[NSBezierPath bezierPath] retain];
  10     }
  11
  12     return self;
  13 }
  14
  15 - (void)drawRect:(NSRect)theRect
  16 {
  17     float vh = NSHeight(theRect);
  18     float vw = NSWidth(theRect);
  19
  20     NSPoint pointA = NSMakePoint( 24.0        , 0.0         );
  21 //  NSPoint pointB = NSMakePoint( 0.0         , 24.0        );  reference
  22     NSPoint pointC = NSMakePoint( 0.0         , (vh - 24.0) );
  23 //  NSPoint pointD = NSMakePoint( 24.0        , vh          );  reference
  24     NSPoint pointE = NSMakePoint( (vw - 24.0) , vh          );
  25 //  NSPoint pointF = NSMakePoint( vw          , (vh - 24.0) );  reference
  26     NSPoint pointG = NSMakePoint( vw          , 24.0        );
  27 //  NSPoint pointH = NSMakePoint( (vw - 24.0) , 0.0         );  reference
  28
  29     NSPoint ctrAB  = NSMakePoint( 24.0        , 24.0        );
  30     NSPoint ctrCD  = NSMakePoint( 24.0        , (vh - 24.0) );
  31     NSPoint ctrEF  = NSMakePoint( (vw - 24.0) , (vh - 24.0) );
  32     NSPoint ctrGH  = NSMakePoint( (vw - 24.0) , 24.0        );
  33
  34     /*
  35      *        D                    E
  36      *      +------------------------+
  37      *    C | * ctrCD        ctrEF * | F
  38      *      |                        |
  39      *    B | * ctrAB        ctrGH * | G
  40      *      +------------------------+
  41      *        A                    H
  42      */
  43
  44     [_path autorelease];
  45     _path = [[NSBezierPath bezierPath] retain];
  46
  47     [_path moveToPoint:pointA];                         //  first point
  48     [_path appendBezierPathWithArcWithCenter:ctrAB      //  bottom-left curve
  49                                       radius:24.0
  50                                   startAngle:90.0
  51                                     endAngle:180.0];
  52     [_path lineToPoint:pointC];                         //  left line
  53     [_path appendBezierPathWithArcWithCenter:ctrCD      //  top-left curve
  54                                       radius:24.0
  55                                   startAngle:180.0
  56                                     endAngle:270.0];
  57     [_path lineToPoint:pointE];                         //  top line
  58     [_path appendBezierPathWithArcWithCenter:ctrEF      //  top-right curve
  59                                       radius:24.0
  60                                   startAngle:270.0
  61                                     endAngle:0.0];
  62     [_path lineToPoint:pointG];                         //  right line
  63     [_path appendBezierPathWithArcWithCenter:ctrGH      //  bottom-right curve
  64                                       radius:24.0
  65                                   startAngle:0.0
  66                                     endAngle:90.0];
  67     [_path lineToPoint:pointA];                         //  right line
  68
  69     [[NSColor colorWithCalibratedWhite:0.0 alpha:0.15] set];
  70     [_path fill];
  71 }
  72
  73 - (BOOL)isOpaque
  74 {
  75     return NO;
  76 }
  77
  78 @end