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May 7, 2009 23:30
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| /* | |
| * CPPropertyAnimation.j | |
| * AppKit | |
| * | |
| * Created by Nicholas Small. (extended by David Cann) | |
| * Copyright 2008, 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 | |
| */ | |
| /* | |
| A VERY basic, but functional, property 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; | |
| CPString _keyPath; | |
| CPValue _start; | |
| CPValue _end; | |
| } | |
| - (id)initWithView:(CPView)aView property:(NSString)keyPath { | |
| self = [super initWithDuration:1.0 animationCurve:CPAnimationLinear]; | |
| if (self) { | |
| if ([aView respondsToSelector:keyPath]) { | |
| _view = aView; | |
| _keyPath = keyPath; | |
| } else { | |
| return null; | |
| } | |
| } | |
| return self; | |
| } | |
| - (void)setCurrentProgress:(float)progress { | |
| [super setCurrentProgress:progress]; | |
| progress = [self currentValue]; | |
| if (_keyPath == 'width' || _keyPath == 'height') | |
| progress = (progress * (_end - _start)) + _start; | |
| else if (_keyPath == 'size') | |
| progress = CGSizeMake((progress * (_end.width - _start.width)) + _start.width, (progress * (_end.height - _start.height)) + _start.height); | |
| else if (_keyPath == 'frame') { | |
| progress = 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') | |
| progress = (progress * (_end - _start)) + _start; | |
| [_view setValue:progress forKey:_keyPath]; | |
| } | |
| - (void)setStart:(id)aValue { | |
| _start = aValue; | |
| } | |
| - (id)start { | |
| return _start; | |
| } | |
| - (void)setEnd:(id)aValue { | |
| _end = aValue; | |
| } | |
| - (id)end { | |
| return _end; | |
| } | |
| @end |
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