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CPPropertyAnimation.j
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CPPropertyAnimation.j
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/*
* CPPropertyAnimation.j
* CappuccinoExtensions
*
* Created by Nicholas Small.
* Copyright 2009-2010, Nicholas Small.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@import <AppKit/CPAnimation.j>
/*
A VERY basic, but functional, property animation for Cappuccino. This is not CoreAnimation,
nor anything similar. However, it will handle some basic property animations, and
more can easily be added.
*/
@implementation CPPropertyAnimation : CPAnimation
{
CPView view;
CPDictionary properties;
CPView _startView;
BOOL _endView;
}
- (id)initWithView:(CPView)aView
{
self = [super initWithDuration:1.0 animationCurve:CPAnimationLinear];
if (self)
{
view = aView;
properties = [CPDictionary dictionary];
}
return self;
}
- (CPView)view
{
return view;
}
- (void)addProperty:(CPString)aPath start:(CPValue)aStart end:(CPValue)anEnd
{
if (![view respondsToSelector:aPath])
return;
[properties setObject:{start: aStart, end:anEnd} forKey:aPath];
[view setValue:aStart forKey:aPath];
}
- (void)addToViewOnStart:(CPView)aView
{
_startView = aView;
}
- (CPView)willAddToViewOnStart
{
return _startView;
}
- (void)removeFromSuperviewOnEnd:(BOOL)aFlag
{
_endView = aFlag;
}
- (BOOL)willRemoveFromSuperviewOnEnd
{
return _endView;
}
- (void)setCurrentProgress:(float)progress
{
[super setCurrentProgress:progress];
var progress = [self currentValue];
var keys = [properties allKeys],
count = [keys count];
for (var i = 0; i < count; i++)
{
var keyPath = keys[i],
property = [properties objectForKey:keyPath];
if (!property)
continue;
var start = property.start,
end = property.end,
value;
if (keyPath == 'width' || keyPath == 'height')
value = (progress * (end - start)) + start;
else if (keyPath == 'size')
value = CGSizeMake((progress * (end.width - start.width)) + start.width, (progress * (end.height - start.height)) + start.height);
else if (keyPath == 'frame')
{
value = CGRectMake(
(progress * (end.origin.x - start.origin.x)) + start.origin.x,
(progress * (end.origin.y - start.origin.y)) + start.origin.y,
(progress * (end.size.width - start.size.width)) + start.size.width,
(progress * (end.size.height - start.size.height)) + start.size.height);
}
else if (keyPath == 'alphaValue')
value = (progress * (end - start)) + start;
else if (keyPath == 'backgroundColor' || keyPath == 'textColor' || keyPath == 'textShadowColor')
{
var red = (progress * ([end redComponent] - [start redComponent])) + [start redComponent],
green = (progress * ([end greenComponent] - [start greenComponent])) + [start greenComponent],
blue = (progress * ([end blueComponent] - [start blueComponent])) + [start blueComponent],
alpha = (progress * ([end alphaComponent] - [start alphaComponent])) + [start alphaComponent];
value = [CPColor colorWithCalibratedRed:red green:green blue:blue alpha:alpha];
}
[view setValue:value forKey:keyPath];
}
}
- (void)startAnimation
{
var count = [properties count];
for (var i = 0; i < count; i++)
{
var keyPath = [properties allKeys][i],
property = [properties objectForKey:keyPath];
if (!property)
continue;
[view setValue:property.start forKey:keyPath];
}
if (_startView)
[_startView addSubview:view];
[super startAnimation];
}
- (void)animationTimerDidFire:(CPTimer)aTimer
{
[super animationTimerDidFire:aTimer];
if (_progress === 1.0 && _endView)
[view removeFromSuperview];
}
@end