//
// GHViewAnimation.m
//
// From ViewAnimationTest project. (TODO: Find source)
// Not sure where this is from originally, and I refactored it a bunch.
// If anyone recognizes this code, let me know.
//
#import "GHViewAnimation.h"
@implementation GHViewAnimation
- (id)initWithContainer:(NSView *)container view:(NSView *)view1 view:(NSView *)view2 {
self = [super init];
if (self) {
container_ = container;
view1_ = [self wrapView:view1 container:container_ hide:NO];
view2_ = [self wrapView:view2 container:container_ hide:YES];
toView_ = view2_;
fromView_ = view1_;
}
return self;
}
- (NSView *)wrapView:(NSView *)view container:(NSView *)container hide:(BOOL)hide {
NSRect rect = [container bounds];
NSView *tempView = [[NSView alloc] initWithFrame:rect];
[tempView addSubview:view];
[tempView setAutoresizingMask:[container autoresizingMask]];
[container addSubview:tempView];
rect = [tempView bounds];
[tempView setHidden:hide];
[view setFrame:rect];
return [tempView autorelease];
}
- (void)prepareSubviewOfView:(NSView *)view {
NSView *subview = [[view subviews] objectAtIndex:0];
[subview setFrameOrigin:NSZeroPoint];
// Reset the mask and let each animation turn on whatever resizing options it needs
[subview setAutoresizingMask:NSViewNotSizable];
}
- (void)resetSubviewOfView:(NSView *)view {
NSView *subview = [[view subviews] objectAtIndex:0];
[subview setFrameOrigin:NSZeroPoint];
// Allow the views to resize properly now that the animation is done.
[subview setAutoresizingMask:[container_ autoresizingMask]];
}
- (NSViewAnimation *)dissolve {
[toView_ setFrame:[container_ bounds]];
// Note: view does not need to be unhidden manually as in the other cases. This is because the fade in
// effect will do it for you.
NSViewAnimation *animation = [[[NSViewAnimation alloc] initWithViewAnimations:
[NSArray arrayWithObjects:
// Old view is set to fade out
[NSDictionary dictionaryWithObjectsAndKeys:fromView_, NSViewAnimationTargetKey, NSViewAnimationFadeOutEffect, NSViewAnimationEffectKey, nil],
// New view is set to fade in
[NSDictionary dictionaryWithObjectsAndKeys:toView_, NSViewAnimationTargetKey, NSViewAnimationFadeInEffect, NSViewAnimationEffectKey, nil],
nil]
] autorelease];
return animation;
}
- (NSViewAnimation *)moveIn {
NSRect rect = [container_ bounds];
// Set the old view to be resizable on the right side. It will appear as if it's sitting still
[[[fromView_ subviews] objectAtIndex:0] setAutoresizingMask:NSViewMaxXMargin];
// Set the new view to be out of bounds on the right side, ready to be animated in
[toView_ setFrame:NSMakeRect(NSMaxX(rect), NSMinY(rect), NSWidth(rect), NSHeight(rect))];
// If a previous animation resulted in a zero frame, it set it to hidden. We have to unhide it manually.
[toView_ setHidden:NO];
NSViewAnimation *animation = [[[NSViewAnimation alloc] initWithViewAnimations:
[NSArray arrayWithObjects:
// The left "viewport" shrinks to zero-width on the left side
[NSDictionary dictionaryWithObjectsAndKeys:fromView_, NSViewAnimationTargetKey, [NSValue valueWithRect:NSMakeRect(NSMinX(rect), NSMinY(rect), 0.0, NSHeight(rect))], NSViewAnimationEndFrameKey, nil],
// New view frame is just the viewable area. Since it is currently out of bounds, it will appear to slide
// in bounds.
[NSDictionary dictionaryWithObjectsAndKeys:toView_, NSViewAnimationTargetKey, [NSValue valueWithRect:rect], NSViewAnimationEndFrameKey, nil],
nil]
] autorelease];
return animation;
}
- (NSViewAnimation *)push {
NSRect rect = [container_ bounds];
// Set old view to be resizable on the left side. It will appear to move to the left since the right margin is
// fixed.
[[[fromView_ subviews] objectAtIndex:0] setAutoresizingMask:NSViewMinXMargin];
// Set the new view to be out of bounds on the right side, ready to be animated in
[toView_ setFrame:NSMakeRect(NSMaxX(rect), NSMinY(rect), NSWidth(rect), NSHeight(rect))];
// If a previous animation resulted in a zero frame, it set it to hidden. We have to unhide it manually.
[toView_ setHidden:NO];
NSViewAnimation *animation = [[[NSViewAnimation alloc] initWithViewAnimations:
[NSArray arrayWithObjects:
// Old view frame gets moved to the left, out of bounds.
[NSDictionary dictionaryWithObjectsAndKeys:fromView_, NSViewAnimationTargetKey, [NSValue valueWithRect:NSMakeRect(NSMinX(rect) - NSWidth(rect), NSMinY(rect), NSWidth(rect), NSHeight(rect))], NSViewAnimationEndFrameKey, nil],
// New view frame is just the viewable area. Since it is currently out of bounds, it will appear to slide
// in bounds. Note, this is the same as in the "Move In" case.
[NSDictionary dictionaryWithObjectsAndKeys:toView_, NSViewAnimationTargetKey, [NSValue valueWithRect:rect], NSViewAnimationEndFrameKey, nil],
nil]
] autorelease];
return animation;
}
- (NSViewAnimation *)reveal {
NSRect rect = [container_ bounds];
// Set old view to be resizable on the left side. It will appear to move to the left since the right margin is
// fixed.
[[[fromView_ subviews] objectAtIndex:0] setAutoresizingMask:NSViewMinXMargin];
// Set new view to be resizable on the right side. It will appear to sit still.
[[[toView_ subviews] objectAtIndex:0] setAutoresizingMask:NSViewMinXMargin];
// Make the right viewport zero-width view on the right side. It will reveal the view as it expands to the left.
[toView_ setFrame:NSMakeRect(NSMaxX(rect), NSMinY(rect), 0.0, NSHeight(rect))];
[toView_ setHidden:NO];
// Make the subview such that it's right edge is flush with its superview/viewport.
[[[toView_ subviews] objectAtIndex:0] setFrame:NSMakeRect(NSMinX(rect) - NSWidth(rect), NSMinY(rect), NSWidth(rect), NSHeight(rect))];
NSViewAnimation *animation = [[[NSViewAnimation alloc] initWithViewAnimations:
[NSArray arrayWithObjects:
// The left "viewport" shrinks to zero-width
[NSDictionary dictionaryWithObjectsAndKeys:fromView_, NSViewAnimationTargetKey, [NSValue valueWithRect:NSMakeRect(NSMinX(rect), NSMinY(rect), 0.0, NSHeight(rect))], NSViewAnimationEndFrameKey, nil],
// The right view port expands to encompass the full bounds.
[NSDictionary dictionaryWithObjectsAndKeys:toView_, NSViewAnimationTargetKey, [NSValue valueWithRect:rect], NSViewAnimationEndFrameKey, nil],
nil]
] autorelease];
return animation;
}
- (NSViewAnimation *)wipe {
NSRect rect = [container_ bounds];
// Set the old view to be resizable on the right side. It will appear as if it's sitting still
[[[fromView_ subviews] objectAtIndex:0] setAutoresizingMask:NSViewMaxXMargin];
// Set new view to be resizable on the right side. It will appear to sit still.
[[[toView_ subviews] objectAtIndex:0] setAutoresizingMask:NSViewMinXMargin];
// Make the right viewport zero-wdith
[toView_ setFrame:NSMakeRect(NSMaxX(rect), NSMinY(rect), 0.0, NSHeight(rect))];
[toView_ setHidden:NO];
// Make the subview such that it's right edge is flush with its superview/viewport.
[[[toView_ subviews] objectAtIndex:0] setFrame:NSMakeRect(NSMinX(rect) - NSWidth(rect), NSMinY(rect), NSWidth(rect), NSHeight(rect))];
NSViewAnimation *animation = [[[NSViewAnimation alloc] initWithViewAnimations:
[NSArray arrayWithObjects:
// The left "viewport" shrinks to zero-width
[NSDictionary dictionaryWithObjectsAndKeys:fromView_, NSViewAnimationTargetKey, [NSValue valueWithRect:NSMakeRect(NSMinX(rect), NSMinY(rect), 0.0, NSHeight(rect))], NSViewAnimationEndFrameKey, nil],
// The right view port expands to encompass the full bounds.
[NSDictionary dictionaryWithObjectsAndKeys:toView_, NSViewAnimationTargetKey, [NSValue valueWithRect:rect], NSViewAnimationEndFrameKey, nil],
nil]
] autorelease];
return animation;
}
- (void)animate:(GHViewAnimationType)animationType {
if ([view1_ isHidden]) {
toView_ = view1_;
fromView_ = view2_;
} else {
toView_ = view2_;
fromView_ = view1_;
}
// Unset the first responder. Can cause drawing artifacts since the blue glow extends beyond the view's bounds.
//[[container_ window] makeFirstResponder:nil];
// Turn off all autoresizing for now. Will be twiddling these for different effects.
[self prepareSubviewOfView:toView_];
[self prepareSubviewOfView:fromView_];
NSViewAnimation *animation = nil;
switch (animationType) {
case GHViewAnimationDissolve: animation = [self dissolve]; break;
case GHViewAnimationMoveIn: animation = [self moveIn]; break;
case GHViewAnimationPush: animation = [self push]; break;
case GHViewAnimationReveal: animation = [self reveal]; break;
case GHViewAnimationWipe: animation = [self wipe]; break;
default:
NSAssert(false, @"Invalid animation type");
}
[animation setAnimationBlockingMode:NSAnimationBlocking];
[animation startAnimation];
// Not all the animations above result in the old view being hidden so do it here
[fromView_ setHidden:YES];
[self resetSubviewOfView:fromView_];
[self resetSubviewOfView:toView_];
}
@end
) is private.
