RMMapOverlayView.m
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//
// RMMapOverlayView.m
// MapView
//
// Copyright (c) 2008-2013, Route-Me Contributors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#import "RMMapOverlayView.h"
#import "RMMarker.h"
#import "RMAnnotation.h"
#import "RMPixel.h"
#import "RMMapView.h"
#import "RMUserLocation.h"
@implementation RMMapOverlayView
+ (Class)layerClass
{
return [CAScrollLayer class];
}
- (id)initWithFrame:(CGRect)frame
{
if (!(self = [super initWithFrame:frame]))
return nil;
self.layer.masksToBounds = NO;
return self;
}
- (NSUInteger)sublayersCount
{
return [self.layer.sublayers count];
}
- (void)addSublayer:(CALayer *)aLayer
{
[self.layer addSublayer:aLayer];
}
- (void)insertSublayer:(CALayer *)aLayer atIndex:(unsigned)index
{
[self.layer insertSublayer:aLayer atIndex:index];
}
- (void)insertSublayer:(CALayer *)aLayer below:(CALayer *)sublayer
{
[self.layer insertSublayer:aLayer below:sublayer];
}
- (void)insertSublayer:(CALayer *)aLayer above:(CALayer *)sublayer
{
[self.layer insertSublayer:aLayer above:sublayer];
}
- (void)moveLayersBy:(CGPoint)delta
{
[self.layer scrollPoint:CGPointMake(-delta.x, -delta.y)];
}
- (CALayer *)overlayHitTest:(CGPoint)point
{
RMMapView *mapView = ((RMMapView *)self.superview);
// Here we be sure to hide disabled but visible annotations' layers to
// avoid touch events, then re-enable them after scoring the hit. We
// also show the user location if enabled and we're in tracking mode,
// since its layer is hidden and we want a possible hit.
//
NSPredicate *annotationPredicate = [NSPredicate predicateWithFormat:@"SELF.enabled = NO AND SELF.layer != %@ AND SELF.layer.isHidden = NO", [NSNull null]];
NSArray *disabledVisibleAnnotations = [mapView.annotations filteredArrayUsingPredicate:annotationPredicate];
for (RMAnnotation *annotation in disabledVisibleAnnotations)
annotation.layer.hidden = YES;
if (mapView.userLocation.enabled && mapView.userTrackingMode == RMUserTrackingModeFollowWithHeading)
mapView.userLocation.layer.hidden = NO;
CALayer *hit = [self.layer hitTest:point];
if (mapView.userLocation.enabled && mapView.userTrackingMode == RMUserTrackingModeFollowWithHeading)
mapView.userLocation.layer.hidden = YES;
for (RMAnnotation *annotation in disabledVisibleAnnotations)
annotation.layer.hidden = NO;
return hit;
}
@end