RMLayerSet.m
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//
// RMLayerSet.m
// MapView
//
// Created by Joseph Gentle on 1/10/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import "RMLayerSet.h"
#import "RMMapContents.h"
#import "RMMercatorToScreenProjection.h"
@implementation RMLayerSet
- (id)initForContents: (RMMapContents *)_contents
{
if (![super init])
return nil;
set = [[NSMutableArray alloc] init];
mapContents = _contents;
self.masksToBounds = YES;
return self;
}
- (void)correctScreenPosition: (CALayer *)layer
{
if ([layer conformsToProtocol:@protocol(RMMovingMapLayer)])
{
// Kinda ugly.
CALayer<RMMovingMapLayer>* layer_with_proto = (CALayer<RMMovingMapLayer>*)layer;
RMXYPoint location = [layer_with_proto location];
layer_with_proto.position = [[mapContents mercatorToScreenProjection] projectXYPoint:location];
}
}
- (void)setSublayers: (NSArray*)array
{
for (CALayer *layer in array)
{
[self correctScreenPosition:layer];
}
[set removeAllObjects];
[set addObjectsFromArray:array];
[super setSublayers:array];
}
- (void)addSublayer:(CALayer *)layer
{
[self correctScreenPosition:layer];
[set addObject:layer];
[super addSublayer:layer];
}
- (void)insertSublayer:(CALayer *)layer above:(CALayer *)siblingLayer
{
[self correctScreenPosition:layer];
int index = [set indexOfObject:siblingLayer];
[set insertObject:layer atIndex:index + 1];
[super insertSublayer:layer above:siblingLayer];
}
- (void)insertSublayer:(CALayer *)layer below:(CALayer *)siblingLayer
{
[self correctScreenPosition:layer];
int index = [set indexOfObject:siblingLayer];
[set insertObject:layer atIndex:index];
[super insertSublayer:layer below:siblingLayer];
}
- (void)insertSublayer:(CALayer *)layer atIndex:(unsigned)index
{
[self correctScreenPosition:layer];
[set insertObject:layer atIndex:index];
// TODO: Fix this.
[super addSublayer:layer];
}
/*
- (void)insertSublayer:(RMMapLayer*) layer below:(RMMapLayer*)sibling;
- (void)insertSublayer:(RMMapLayer*) layer above:(RMMapLayer*)sibling;
- (void)removeSublayer:(RMMapLayer*) layer;
*/
- (void)moveToXYPoint: (RMXYPoint)aPoint
{
// TODO: Me
}
- (void)moveBy: (CGSize) delta
{
for (id layer in set)
{
if ([layer respondsToSelector:@selector(moveBy:)])
[layer moveBy:delta];
// if layer moves on and offscreen...
}
}
- (void)zoomByFactor: (float) zoomFactor near:(CGPoint) center
{
for (id layer in set)
{
if ([layer respondsToSelector:@selector(zoomByFactor:near:)])
[layer zoomByFactor:zoomFactor near:center];
}
}
- (void) correctPositionOfAllSublayers
{
for (id layer in set)
{
[self correctScreenPosition:layer];
}
}
@end