+ __idle = NO;
+
+ [self setWindowVisibility:ITWindowAppearingState];
+ [self performAppearFromProgress:0.0 effectTime:_effectTime];
+}
+
+- (void)performAppearFromProgress:(float)progress effectTime:(float)time
+{
+ [_window setEffectProgress:progress];
+ _effectSpeed = (1.0 / (EFFECT_FPS * time));
+
+ if ( progress == 0.0 ) {
+ [_window setAlphaValue:0.0];
+ }
+
+ [_window orderFront:self];
+ _effectTimer = [NSTimer scheduledTimerWithTimeInterval:(1.0 / EFFECT_FPS)
+ target:self
+ selector:@selector(appearStep)
+ userInfo:nil
+ repeats:YES];
+}
+
+- (void)appearStep
+{
+ float interSlide = 0.0;
+ [_window setEffectProgress:([_window effectProgress] + _effectSpeed)];
+ [_window setEffectProgress:( ([_window effectProgress] < 1.0) ? [_window effectProgress] : 1.0)];
+ interSlide = (( sin(([_window effectProgress] * pi) - (pi / 2)) + 1 ) / 2);
+ [self setSlide:( [_window frame].size.width - (interSlide * [_window frame].size.width) )];
+ [_window setAlphaValue:interSlide];
+
+ if ( [_window effectProgress] >= 1.0 ) {
+ [self appearFinish];
+ }
+}
+
+- (void)appearFinish
+{
+ [_effectTimer invalidate];
+ _effectTimer = nil;
+ [self setWindowVisibility:ITWindowVisibleState];
+
+ __idle = YES;
+
+ if ( __shouldReleaseWhenIdle ) {
+ [self release];
+ }
+}
+
+- (void)cancelAppear
+{
+ [self setWindowVisibility:ITWindowVanishingState];
+
+ [_effectTimer invalidate];
+ _effectTimer = nil;
+
+ [self performVanishFromProgress:[_window effectProgress] effectTime:(_effectTime / 4.0)];