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#import <Foundation/Foundation.h>
#import "MGLTypes.h"
#import "MGLGeometry.h"
#import "MGLMapCamera.h"
NS_ASSUME_NONNULL_BEGIN
MGL_EXPORT
/**
The options to use when creating images with the `MGLMapsnapshotter`.
*/
@interface MGLMapSnapshotOptions : NSObject
/**
Creates a set of options with the minimum required information
@param styleURL the style url to use
@param camera the camera settings
@param size the image size
*/
- (instancetype)initWithStyleURL:(NSURL*)styleURL camera:(MGLMapCamera*)camera size:(CGSize)size;
#pragma mark - Configuring the map
/**
The style URL for these options.
*/
@property (nonatomic, readonly) NSURL* styleURL;
/**
The zoom. Default is 0.
*/
@property (nonatomic) double zoom;
/**
The `MGLMapcamera` options to use.
*/
@property (nonatomic) MGLMapCamera* camera;
/**
A region to capture. Overrides the center coordinate
in the mapCamera options if set
*/
@property (nonatomic) MGLCoordinateBounds region;
#pragma mark - Configuring the image
/**
The size of the output image. Minimum is 64x64
*/
@property (nonatomic, readonly) CGSize size;
/**
The scale of the output image. Defaults to the main screen scale.
Minimum is 1.
*/
@property (nonatomic) CGFloat scale;
@end
/**
A block to processes the result or error of a snapshot request.
The result will be either an `MGLImage` or a `NSError`
@param snapshot The image that was generated or `nil` if an error occurred.
@param error The eror that occured or `nil` when succesful.
*/
typedef void (^MGLMapSnapshotCompletionHandler)(MGLImage* _Nullable snapshot, NSError* _Nullable error);
/**
A utility object for capturing map-based images.
*/
MGL_EXPORT
@interface MGLMapSnapshotter : NSObject
- (instancetype)initWithOptions:(MGLMapSnapshotOptions*)options;
/**
Starts the snapshot creation and executes the specified block with the result.
@param completionHandler The block to handle the result in.
*/
- (void)startWithCompletionHandler:(MGLMapSnapshotCompletionHandler)completionHandler;
/**
Starts the snapshot creation and executes the specified block with the result on the specified queue.
@param queue The queue to handle the result on.
@param completionHandler The block to handle the result in.
*/
- (void)startWithQueue:(dispatch_queue_t)queue completionHandler:(MGLMapSnapshotCompletionHandler)completionHandler;
/**
Cancels the snapshot creation request, if any.
*/
- (void)cancel;
/**
Indicates whether as snapshot is currently being generated.
*/
@property (nonatomic, readonly, getter=isLoading) BOOL loading;
@end
NS_ASSUME_NONNULL_END
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