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