RMStaticMapView.m
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//
// RMStaticMapView.m
//
// Copyright (c) 2008-2012, 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 "RMStaticMapView.h"
#define RMStaticMapViewMaxWidth 640.0f
#define RMStaticMapViewMaxHeight 640.0f
#define RMStaticMapViewMinZoom 0.0f
#define RMStaticMapViewMaxZoom 17.0f
@implementation RMStaticMapView
- (id)initWithFrame:(CGRect)frame mapID:(NSString *)mapID centerCoordinate:(CLLocationCoordinate2D)centerCoordinate zoomLevel:(CGFloat)initialZoomLevel
{
if (!(self = [super initWithFrame:frame]))
return nil;
CGRect requestFrame = CGRectMake(frame.origin.x, frame.origin.y, fminf(frame.size.width, RMStaticMapViewMaxWidth), fminf(frame.size.height, RMStaticMapViewMaxHeight));
if ( ! CLLocationCoordinate2DIsValid(centerCoordinate))
centerCoordinate = CLLocationCoordinate2DMake(0, 0);
initialZoomLevel = fmaxf(initialZoomLevel, RMStaticMapViewMinZoom);
initialZoomLevel = fminf(initialZoomLevel, RMStaticMapViewMaxZoom);
self.backgroundColor = [UIColor colorWithPatternImage:[RMMapView resourceImageNamed:@"LoadingTile.png"]];
self.contentMode = UIViewContentModeCenter;
UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
[spinner startAnimating];
spinner.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;
spinner.center = self.center;
[self addSubview:spinner];
NSURL *imageURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://api.tiles.mapbox.com/v3/%@/%f,%f,%i/%ix%i.png", mapID, centerCoordinate.longitude, centerCoordinate.latitude, (int)roundf(initialZoomLevel), (int)roundf(requestFrame.size.width), (int)roundf(requestFrame.size.height)]];
[NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:imageURL]
queue:[NSOperationQueue new]
completionHandler:^(NSURLResponse *response, NSData *responseData, NSError *error)
{
[self.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
if (responseData)
{
dispatch_async(dispatch_get_main_queue(), ^(void)
{
self.image = [UIImage imageWithData:responseData];
});
}
else
return; // TODO: notify delegate of error & display something
}];
return self;
}
@end