ITPivotWindowEffect.m

   1 #import "ITPivotWindowEffect.h"
   2 #import "ITCoreGraphicsHacks.h"
   3
   4 @implementation ITPivotWindowEffect
   5
   6
   7 - (void)performAppear
   8 {
   9     NSLog(@"ITPivotWindowEffect does not implement performAppear.");
  10 }
  11
  12 - (void)performVanish
  13 {
  14     NSLog(@"ITPivotWindowEffect does not implement performVanish.");
  15 }
  16
  17 - (void)pivotEffect
  18 {
  19     if ( YES ) {
  20         [self setPivot:315.0];
  21         _effectProgress = 0.0;
  22         [_window setAlphaValue:0.0];
  23         [_window orderFront:self];
  24         _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
  25                                                         target:self
  26                                                       selector:@selector(pivotStep)
  27                                                       userInfo:nil
  28                                                        repeats:YES];
  29     } else {
  30         [_window orderOut:self];
  31     }
  32 }
  33
  34 - (void)pivotStep
  35 {
  36     if ( YES ) {
  37         float interPivot = 0.0;
  38         _effectProgress += (1.0 / (EFFECT_FPS * _effectTime));
  39         _effectProgress = (_effectProgress < 1.0 ? _effectProgress : 1.0);
  40         interPivot = (( sin((_effectProgress * pi) - (pi / 2)) + 1 ) / 2);
  41         [self setPivot:((interPivot * 45) + 315)];
  42         [_window setAlphaValue:interPivot];
  43         if ( _effectProgress >= 1.0 ) {
  44             [self pivotFinish];
  45         }
  46     } else {
  47         //backwards
  48     }
  49 }
  50
  51 - (void)pivotFinish
  52 {
  53     if ( YES ) {
  54         [_effectTimer invalidate];
  55         _effectTimer = nil;
  56         _effectProgress = 0.0;
  57     } else {
  58         //backwards
  59     }
  60 }
  61
  62
  63 - (void)setPivot:(float)angle
  64 {
  65     float degAngle = (angle * (pi / 180));
  66     CGAffineTransform transform = CGAffineTransformMakeRotation(degAngle);
  67
  68  // Set pivot point
  69     transform.tx = -32.0;
  70     transform.ty = [_window frame].size.height + 32.0;
  71
  72     CGSSetWindowTransform([NSApp contextID],
  73                           (CGSWindowID)[_window windowNumber],
  74                           CGAffineTransformTranslate(transform,
  75                                                      (([_window frame].origin.x - 32.0) * -1),
  76                                                      (([[_window screen] frame].size.height - ([_window frame].origin.y) + 32.0) * -1) ));
  77 }
  78
  79
  80 @end