ITPivotWindowEffect.m

   1 #import "ITPivotWindowEffect.h"
   2 #import "ITCoreGraphicsHacks.h"
   3 #import "ITTransientStatusWindow.h"
   4
   5
   6 @interface ITPivotWindowEffect (Private)
   7 - (void)setPivot:(float)angle;
   8 - (void)appearFinish;
   9 - (void)vanishFinish;
  10 @end
  11
  12
  13 @implementation ITPivotWindowEffect
  14
  15 - (void)performAppear
  16 {
  17       // Cast so the compiler won't gripe
  18     [(ITTransientStatusWindow *)_window setVisibilityState:ITTransientStatusWindowAppearingState];
  19     [self setPivot:315.0];
  20     _effectProgress = 0.0;
  21     [_window setAlphaValue:0.0];
  22     [_window orderFront:self];
  23     _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
  24                                                     target:self
  25                                                   selector:@selector(appearStep)
  26                                                   userInfo:nil
  27                                                    repeats:YES];
  28 }
  29
  30 - (void)performVanish
  31 {
  32       // Cast so the compiler won't gripe
  33     [(ITTransientStatusWindow *)_window setVisibilityState:ITTransientStatusWindowVanishingState];
  34     [self setPivot:0.0];
  35     _effectProgress = 1.0;
  36     [_window setAlphaValue:1.0];
  37     [_window orderFront:self];
  38     _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
  39                                                     target:self
  40                                                   selector:@selector(vanishStep)
  41                                                   userInfo:nil
  42                                                    repeats:YES];
  43 }
  44
  45 - (void)cancelAppear
  46 {
  47     [self appearFinish];
  48     [_window orderOut:self];
  49     [self setPivot:0.0];
  50     [_window setAlphaValue:1.0];
  51       // Cast so the compiler won't gripe
  52     [(ITTransientStatusWindow *)_window setVisibilityState:ITTransientStatusWindowHiddenState];
  53 }
  54
  55 - (void)cancelVanish
  56 {
  57     [self vanishFinish];
  58     [self setPivot:0.0];
  59     [_window setAlphaValue:1.0];
  60     [_window orderFront:self];
  61     [_window display];
  62       // Cast so the compiler won't gripe
  63     [(ITTransientStatusWindow *)_window setVisibilityState:ITTransientStatusWindowVisibleState];
  64 }
  65
  66 - (void)appearStep
  67 {
  68     float interPivot = 0.0;
  69     _effectProgress += (1.0 / (EFFECT_FPS * _effectTime));
  70     _effectProgress = (_effectProgress < 1.0 ? _effectProgress : 1.0);
  71     interPivot = (( sin((_effectProgress * pi) - (pi / 2)) + 1 ) / 2);
  72     [self setPivot:((interPivot * 45) + 315)];
  73     [_window setAlphaValue:interPivot];
  74
  75     if ( _effectProgress >= 1.0 ) {
  76         [self appearFinish];
  77     }
  78 }
  79
  80 - (void)vanishStep
  81 {
  82     float interPivot = 1.0;
  83     _effectProgress -= (1.0 / (EFFECT_FPS * _effectTime));
  84     _effectProgress = (_effectProgress > 0.0 ? _effectProgress : 0.0);
  85     interPivot = (( sin((_effectProgress * pi) - (pi / 2)) + 1 ) / 2);
  86     [self setPivot:((interPivot * 45) + 315)];
  87     [_window setAlphaValue:interPivot];
  88
  89     if ( _effectProgress <= 0.0 ) {
  90         [self vanishFinish];
  91     }
  92 }
  93
  94 - (void)appearFinish
  95 {
  96     [_effectTimer invalidate];
  97     _effectTimer = nil;
  98       // Cast so the compiler won't gripe
  99     [(ITTransientStatusWindow *)_window setVisibilityState:ITTransientStatusWindowVisibleState];
 100 }
 101
 102 - (void)vanishFinish
 103 {
 104     [_effectTimer invalidate];
 105     _effectTimer = nil;
 106       // Cast so the compiler won't gripe
 107     [(ITTransientStatusWindow *)_window setVisibilityState:ITTransientStatusWindowHiddenState];
 108 }
 109
 110 - (void)setPivot:(float)angle
 111 {
 112     float degAngle = (angle * (pi / 180));
 113     CGAffineTransform transform = CGAffineTransformMakeRotation(degAngle);
 114
 115  // Set pivot rotation point
 116     transform.tx = -32.0;
 117     transform.ty = [_window frame].size.height + 32.0;
 118
 119     CGSSetWindowTransform([NSApp contextID],
 120                           (CGSWindowID)[_window windowNumber],
 121                           CGAffineTransformTranslate(transform,
 122                                                      (([_window frame].origin.x - 32.0) * -1),
 123                                                      (([[_window screen] frame].size.height - ([_window frame].origin.y) + 32.0) * -1) ));
 124 }
 125
 126
 127 @end