ITImageCell.m

   1 #import "ITImageCell.h"
   2 #import <ApplicationServices/ApplicationServices.h>
   3 #import <ITFoundation/ITFoundation.h>
   4
   5 @implementation ITImageCell
   6
   7 - (id)initImageCell:(NSImage *)image {
   8         if ((self = [super initImageCell:image])) {
   9                 _scalesSmoothly = YES;
  10                 castsShadow = NO;
  11                 shadowAzimuth = 90.0;
  12                 shadowAmbient = 0.15;
  13                 shadowHeight = 1.00;
  14                 shadowRadius = 4.00;
  15         }
  16         return self;
  17 }
  18
  19 - (id)init {
  20         if ((self = [super init])) {
  21                 _scalesSmoothly = YES;
  22                 castsShadow = NO;
  23                 shadowAzimuth = 90.0;
  24                 shadowAmbient = 0.15; // In my tests, an alpha component of 0.85 perfectly duplicates the old private API's results, resulting in identical shadows. Therefore, the ambient can remain 0.15.
  25                 shadowHeight = 1.00;
  26                 shadowRadius = 4.00;
  27         }
  28         return self;
  29 }
  30
  31 - (void)drawWithFrame:(NSRect)rect inView:(NSView *)controlView {
  32         NSShadow *shadow;
  33
  34         if (_scalesSmoothly || castsShadow) {
  35                 [NSGraphicsContext saveGraphicsState];
  36         }
  37
  38         if (_scalesSmoothly) {
  39                 [[NSGraphicsContext currentContext] setImageInterpolation:NSImageInterpolationHigh];
  40                 [[NSGraphicsContext currentContext] setShouldAntialias:YES];
  41         }
  42
  43         if (castsShadow) {
  44                 CGFloat height = ((2.0*tan((M_PI/360.0)*(shadowAzimuth-180.0)))*shadowHeight)/(1.0+pow(tan((M_PI/360.0)*(shadowAzimuth-180.0)),2.0));
  45                 CGFloat width = sqrt(pow(shadowHeight, 2.0)-pow(height, 2.0));
  46
  47                 shadow = [[NSShadow alloc] init];
  48                 [shadow setShadowColor:[[NSColor blackColor] colorWithAlphaComponent:(1.0 - shadowAmbient)]];
  49                 [shadow setShadowOffset:NSMakeSize(width, height)];
  50                 [shadow setShadowBlurRadius:shadowRadius];
  51
  52                 [shadow set];
  53         }
  54
  55         [super drawWithFrame:rect inView:controlView];
  56
  57         if (_scalesSmoothly || castsShadow) {
  58                 [NSGraphicsContext restoreGraphicsState];
  59         }
  60
  61         if (castsShadow) {
  62                 [shadow release];
  63         }
  64 }
  65
  66 - (BOOL)scalesSmoothly {
  67         return _scalesSmoothly;
  68 }
  69
  70 - (void)setScalesSmoothly:(BOOL)flag {
  71         _scalesSmoothly = flag;
  72         [[self controlView] setNeedsDisplay:YES];
  73 }
  74
  75 - (BOOL)castsShadow {
  76         return castsShadow;
  77 }
  78
  79 - (void)setCastsShadow:(BOOL)newSetting {
  80         castsShadow = newSetting;
  81         [[self controlView] setNeedsDisplay:YES];
  82 }
  83
  84 - (float)shadowElevation {
  85         return 45.0;
  86 }
  87
  88 - (void)setShadowElevation:(float)newElevation {
  89         ITDebugLog(@"setShadowElevation: on ITImageCell objects does nothing.");
  90 }
  91
  92 - (float)shadowAzimuth {
  93         return shadowAzimuth;
  94 }
  95
  96 - (void)setShadowAzimuth:(float)newAzimuth {
  97         shadowAzimuth = newAzimuth;
  98         [[self controlView] setNeedsDisplay:YES];
  99 }
 100
 101 - (float)shadowAmbient {
 102         return shadowAmbient;
 103 }
 104
 105 - (void)setShadowAmbient:(float)newAmbient {
 106         shadowAmbient = newAmbient;
 107         [[self controlView] setNeedsDisplay:YES];
 108 }
 109
 110 - (float)shadowHeight {
 111         return shadowHeight;
 112 }
 113
 114 - (void)setShadowHeight:(float)newHeight {
 115         shadowHeight = newHeight;
 116         [[self controlView] setNeedsDisplay:YES];
 117 }
 118
 119 - (float)shadowRadius {
 120         return shadowRadius;
 121 }
 122
 123 - (void)setShadowRadius:(float)newRadius {
 124         shadowRadius = newRadius;
 125         [[self controlView] setNeedsDisplay:YES];
 126 }
 127
 128 - (float)shadowSaturation {
 129         return 1.0;
 130 }
 131
 132 - (void)setShadowSaturation:(float)newSaturation {
 133         ITDebugLog(@"setShadowSaturation: on ITImageCell objects does nothing.");
 134 }
 135
 136 @end