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)performAppearFromProgress:(float)progress effectTime:(float)time;
   9 - (void)performVanishFromProgress:(float)progress effectTime:(float)time;
  10 - (void)appearFinish;
  11 - (void)vanishFinish;
  12 @end
  13
  14
  15 @implementation ITPivotWindowEffect
  16
  17 - (void)performAppear
  18 {
  19     [self setWindowVisibility:ITTransientStatusWindowAppearingState];
  20     [self performAppearFromProgress:0.0 effectTime:_effectTime];
  21 }
  22
  23 - (void)performAppearFromProgress:(float)progress effectTime:(float)time
  24 {
  25     _effectProgress = progress;
  26     _effectSpeed = (1.0 / (EFFECT_FPS * time));
  27
  28     if ( progress == 0.0 ) {
  29         [self setPivot:315.0];
  30         [_window setAlphaValue:0.0];
  31     }
  32
  33     [_window orderFront:self];
  34     _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
  35                                                     target:self
  36                                                   selector:@selector(appearStep)
  37                                                   userInfo:nil
  38                                                    repeats:YES];
  39 }
  40
  41 - (void)performVanish
  42 {
  43     [self setWindowVisibility:ITTransientStatusWindowVanishingState];
  44     [self performVanishFromProgress:1.0 effectTime:_effectTime];
  45 }
  46
  47 - (void)performVanishFromProgress:(float)progress effectTime:(float)time
  48 {
  49     _effectProgress = progress;
  50     _effectSpeed = (1.0 / (EFFECT_FPS * time));
  51     if ( progress == 1.0 ) {
  52         [self setPivot:0.0];
  53         [_window setAlphaValue:1.0];
  54     }
  55
  56     [_window orderFront:self];
  57     _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
  58                                                     target:self
  59                                                   selector:@selector(vanishStep)
  60                                                   userInfo:nil
  61                                                    repeats:YES];
  62 }
  63
  64 - (void)cancelAppear
  65 {
  66     [self setWindowVisibility:ITTransientStatusWindowVanishingState];
  67
  68     [_effectTimer invalidate];
  69     _effectTimer = nil;
  70
  71     [self performVanishFromProgress:_effectProgress effectTime:(_effectTime / 3.5)];
  72 }
  73
  74 - (void)cancelVanish
  75 {
  76     [self setWindowVisibility:ITTransientStatusWindowAppearingState];
  77
  78     [_effectTimer invalidate];
  79     _effectTimer = nil;
  80
  81     [self performAppearFromProgress:_effectProgress effectTime:(_effectTime / 3.5)];
  82 }
  83
  84 - (void)appearStep
  85 {
  86     float interPivot = 0.0;
  87     _effectProgress += _effectSpeed;
  88     _effectProgress = (_effectProgress < 1.0 ? _effectProgress : 1.0);
  89     interPivot = (( sin((_effectProgress * pi) - (pi / 2)) + 1 ) / 2);
  90     [self setPivot:((interPivot * 45) + 315)];
  91     [_window setAlphaValue:interPivot];
  92
  93     if ( _effectProgress >= 1.0 ) {
  94         [self appearFinish];
  95     }
  96 }
  97
  98 - (void)vanishStep
  99 {
 100     float interPivot = 1.0;
 101     _effectProgress -= _effectSpeed;
 102     _effectProgress = (_effectProgress > 0.0 ? _effectProgress : 0.0);
 103     interPivot = (( sin((_effectProgress * pi) - (pi / 2)) + 1 ) / 2);
 104     [self setPivot:((interPivot * 45) + 315)];
 105     [_window setAlphaValue:interPivot];
 106
 107     if ( _effectProgress <= 0.0 ) {
 108         [self vanishFinish];
 109     }
 110 }
 111
 112 - (void)appearFinish
 113 {
 114     [_effectTimer invalidate];
 115     _effectTimer = nil;
 116     [self setWindowVisibility:ITTransientStatusWindowVisibleState];
 117 }
 118
 119 - (void)vanishFinish
 120 {
 121     [_effectTimer invalidate];
 122     _effectTimer = nil;
 123     [self setWindowVisibility:ITTransientStatusWindowHiddenState];
 124 }
 125
 126 - (void)setPivot:(float)angle
 127 {
 128     float degAngle = (angle * (pi / 180));
 129
 130     CGAffineTransform transform = CGAffineTransformMakeRotation(degAngle);
 131
 132  // Set pivot rotation point
 133     transform.tx = -32.0;
 134     transform.ty = [_window frame].size.height + 32.0;
 135
 136     CGSSetWindowTransform([NSApp contextID],
 137                           (CGSWindowID)[_window windowNumber],
 138                           CGAffineTransformTranslate(transform,
 139                                                      (([_window frame].origin.x - 32.0) * -1),
 140                                                      (([[_window screen] frame].size.height - ([_window frame].origin.y) + 32.0) * -1) ));
 141 }
 142
 143
 144 @end