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authorMinh Nguyễn <mxn@1ec5.org>2020-02-27 13:09:39 -0800
committerMinh Nguyễn <mxn@1ec5.org>2020-02-27 17:14:20 -0800
commit206b9bde5ed9204de6ec18c0d37495db7c30aa09 (patch)
tree0049d4d6bd9195c194c0fe96665ba72c92f00da5 /platform/darwin/src/MGLMapSnapshotter.mm
parentbd252e16a3574efd11cca57917f52e6d1b2dd0a2 (diff)
downloadqtlocation-mapboxgl-206b9bde5ed9204de6ec18c0d37495db7c30aa09.tar.gz
[ios, macos] Deleted iOS/macOS map SDK sources, resources, scripts
Diffstat (limited to 'platform/darwin/src/MGLMapSnapshotter.mm')
-rw-r--r--platform/darwin/src/MGLMapSnapshotter.mm752
1 files changed, 0 insertions, 752 deletions
diff --git a/platform/darwin/src/MGLMapSnapshotter.mm b/platform/darwin/src/MGLMapSnapshotter.mm
deleted file mode 100644
index f3e9e7a41e..0000000000
--- a/platform/darwin/src/MGLMapSnapshotter.mm
+++ /dev/null
@@ -1,752 +0,0 @@
-#import "MGLMapSnapshotter.h"
-
-#import <mbgl/actor/actor.hpp>
-#import <mbgl/actor/scheduler.hpp>
-#import <mbgl/util/geo.hpp>
-#import <mbgl/map/map_options.hpp>
-#import <mbgl/map/map_snapshotter.hpp>
-#import <mbgl/map/camera.hpp>
-#import <mbgl/storage/resource_options.hpp>
-#import <mbgl/util/string.hpp>
-
-#import "MGLOfflineStorage_Private.h"
-#import "MGLGeometry_Private.h"
-#import "NSBundle+MGLAdditions.h"
-#import "MGLStyle.h"
-#import "MGLAttributionInfo_Private.h"
-#import "MGLLoggingConfiguration_Private.h"
-#import "MGLRendererConfiguration.h"
-#import "MGLMapSnapshotter_Private.h"
-
-#if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
-#import "MGLMapboxEvents.h"
-#endif
-
-#if TARGET_OS_IPHONE
-#import "UIImage+MGLAdditions.h"
-#else
-#import "NSImage+MGLAdditions.h"
-#import <CoreGraphics/CoreGraphics.h>
-#import <QuartzCore/QuartzCore.h>
-#endif
-
-const CGPoint MGLLogoImagePosition = CGPointMake(8, 8);
-const CGFloat MGLSnapshotterMinimumPixelSize = 64;
-
-
-@interface MGLMapSnapshotOverlay() <MGLMapSnapshotProtocol>
-@property (nonatomic, assign) CGFloat scale;
-- (instancetype)initWithContext:(CGContextRef)context scale:(CGFloat)scale pointForFn:(mbgl::MapSnapshotter::PointForFn)pointForFn latLngForFn:(mbgl::MapSnapshotter::LatLngForFn)latLngForFn;
-
-@end
-
-@implementation MGLMapSnapshotOverlay {
- mbgl::MapSnapshotter::PointForFn _pointForFn;
- mbgl::MapSnapshotter::LatLngForFn _latLngForFn;
-}
-
-- (instancetype) initWithContext:(CGContextRef)context scale:(CGFloat)scale pointForFn:(mbgl::MapSnapshotter::PointForFn)pointForFn latLngForFn:(mbgl::MapSnapshotter::LatLngForFn)latLngForFn {
- self = [super init];
- if (self) {
- _context = context;
- _scale = scale;
- _pointForFn = pointForFn;
- _latLngForFn = latLngForFn;
- }
-
- return self;
-}
-
-#if TARGET_OS_IPHONE
-
-- (CGPoint)pointForCoordinate:(CLLocationCoordinate2D)coordinate
-{
- mbgl::ScreenCoordinate sc = _pointForFn(MGLLatLngFromLocationCoordinate2D(coordinate));
- return CGPointMake(sc.x, sc.y);
-}
-
-- (CLLocationCoordinate2D)coordinateForPoint:(CGPoint)point
-{
- mbgl::LatLng latLng = _latLngForFn(mbgl::ScreenCoordinate(point.x, point.y));
- return MGLLocationCoordinate2DFromLatLng(latLng);
-}
-
-#else
-
-- (NSPoint)pointForCoordinate:(CLLocationCoordinate2D)coordinate
-{
- mbgl::ScreenCoordinate sc = _pointForFn(MGLLatLngFromLocationCoordinate2D(coordinate));
- CGFloat height = ((CGFloat)CGBitmapContextGetHeight(self.context))/self.scale;
- return NSMakePoint(sc.x, height - sc.y);
-}
-
-- (CLLocationCoordinate2D)coordinateForPoint:(NSPoint)point
-{
- CGFloat height = ((CGFloat)CGBitmapContextGetHeight(self.context))/self.scale;
- auto screenCoord = mbgl::ScreenCoordinate(point.x, height - point.y);
- mbgl::LatLng latLng = _latLngForFn(screenCoord);
- return MGLLocationCoordinate2DFromLatLng(latLng);
-}
-
-#endif
-@end
-
-@implementation MGLMapSnapshotOptions
-
-- (instancetype _Nonnull)initWithStyleURL:(nullable NSURL *)styleURL camera:(MGLMapCamera *)camera size:(CGSize)size
-{
- MGLLogDebug(@"Initializing withStyleURL: %@ camera: %@ size: %@", styleURL, camera, MGLStringFromSize(size));
- self = [super init];
- if (self)
- {
- if ( !styleURL)
- {
- styleURL = [MGLStyle streetsStyleURLWithVersion:MGLStyleDefaultVersion];
- }
- _styleURL = styleURL;
- _size = size;
- _camera = camera;
-#if TARGET_OS_IPHONE
- _scale = [UIScreen mainScreen].scale;
-#else
- _scale = [NSScreen mainScreen].backingScaleFactor;
-#endif
- }
- return self;
-}
-
-@end
-
-@interface MGLMapSnapshot() <MGLMapSnapshotProtocol>
-- (instancetype)initWithImage:(nullable MGLImage *)image scale:(CGFloat)scale pointForFn:(mbgl::MapSnapshotter::PointForFn)pointForFn latLngForFn:(mbgl::MapSnapshotter::LatLngForFn)latLngForFn;
-
-@property (nonatomic) CGFloat scale;
-@end
-
-@implementation MGLMapSnapshot {
- mbgl::MapSnapshotter::PointForFn _pointForFn;
- mbgl::MapSnapshotter::LatLngForFn _latLngForFn;
-}
-
-- (instancetype)initWithImage:(nullable MGLImage *)image scale:(CGFloat)scale pointForFn:(mbgl::MapSnapshotter::PointForFn)pointForFn latLngForFn:(mbgl::MapSnapshotter::LatLngForFn)latLngForFn
-{
- self = [super init];
- if (self) {
- _pointForFn = pointForFn;
- _latLngForFn = latLngForFn;
- _scale = scale;
- _image = image;
- }
- return self;
-}
-
-#if TARGET_OS_IPHONE
-
-- (CGPoint)pointForCoordinate:(CLLocationCoordinate2D)coordinate
-{
- mbgl::ScreenCoordinate sc = _pointForFn(MGLLatLngFromLocationCoordinate2D(coordinate));
- return CGPointMake(sc.x, sc.y);
-}
-
-- (CLLocationCoordinate2D)coordinateForPoint:(CGPoint)point
-{
- mbgl::LatLng latLng = _latLngForFn(mbgl::ScreenCoordinate(point.x, point.y));
- return MGLLocationCoordinate2DFromLatLng(latLng);
-}
-
-#else
-
-- (NSPoint)pointForCoordinate:(CLLocationCoordinate2D)coordinate
-{
- mbgl::ScreenCoordinate sc = _pointForFn(MGLLatLngFromLocationCoordinate2D(coordinate));
- return NSMakePoint(sc.x, self.image.size.height - sc.y);
-}
-
-- (CLLocationCoordinate2D)coordinateForPoint:(NSPoint)point
-{
- auto screenCoord = mbgl::ScreenCoordinate(point.x, self.image.size.height - point.y);
- mbgl::LatLng latLng = _latLngForFn(screenCoord);
- return MGLLocationCoordinate2DFromLatLng(latLng);
-}
-
-#endif
-
-@end
-
-@interface MGLMapSnapshotter()
-@property (nonatomic) BOOL cancelled;
-@property (nonatomic) BOOL terminated;
-@property (nonatomic) dispatch_queue_t resultQueue;
-@property (nonatomic, copy) MGLMapSnapshotCompletionHandler completion;
-+ (void)completeWithErrorCode:(MGLErrorCode)errorCode description:(nonnull NSString*)description onQueue:(dispatch_queue_t)queue completion:(MGLMapSnapshotCompletionHandler)completion;
-@end
-
-@implementation MGLMapSnapshotter {
- std::unique_ptr<mbgl::MapSnapshotter> _mbglMapSnapshotter;
- std::unique_ptr<mbgl::Actor<mbgl::MapSnapshotter::Callback>> _snapshotCallback;
-}
-
-- (void)dealloc {
- [[NSNotificationCenter defaultCenter] removeObserver:self];
-
- if (_completion) {
- MGLAssert(_snapshotCallback, @"Snapshot in progress - there should be a valid callback");
-
- [MGLMapSnapshotter completeWithErrorCode:MGLErrorCodeSnapshotFailed
- description:@"MGLMapSnapshotter deallocated prior to snapshot completion."
- onQueue:_resultQueue
- completion:_completion];
- }
-}
-
-
-- (instancetype)init {
- NSAssert(NO, @"Please use -[MGLMapSnapshotter initWithOptions:]");
- [super doesNotRecognizeSelector:_cmd];
- return nil;
-}
-
-- (instancetype)initWithOptions:(MGLMapSnapshotOptions *)options
-{
- MGLLogDebug(@"Initializing withOptions: %@", options);
- self = [super init];
- if (self) {
- [self setOptions:options];
-#if TARGET_OS_IPHONE
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillTerminate:) name:UIApplicationWillTerminateNotification object:nil];
-#else
- [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillTerminate:) name:NSApplicationWillTerminateNotification object:nil];
-#endif
-#if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
- [MGLMapboxEvents pushTurnstileEvent];
-#endif
- }
- return self;
-}
-
-- (void)applicationWillTerminate:(NSNotification *)notification
-{
- if (self.completion) {
- [self cancel];
- }
-
- _mbglMapSnapshotter.reset();
- _snapshotCallback.reset();
-
- self.terminated = YES;
-}
-
-- (void)startWithCompletionHandler:(MGLMapSnapshotCompletionHandler)completion
-{
- MGLLogDebug(@"Starting withCompletionHandler: %@", completion);
- [self startWithQueue:dispatch_get_main_queue() completionHandler:completion];
-}
-
-- (void)startWithQueue:(dispatch_queue_t)queue completionHandler:(MGLMapSnapshotCompletionHandler)completionHandler {
- [self startWithQueue:queue overlayHandler:nil completionHandler:completionHandler];
-}
-
-- (void)startWithOverlayHandler:(MGLMapSnapshotOverlayHandler)overlayHandler completionHandler:(MGLMapSnapshotCompletionHandler)completion {
- [self startWithQueue:dispatch_get_main_queue() overlayHandler:overlayHandler completionHandler:completion];
-}
-
-- (void)startWithQueue:(dispatch_queue_t)queue overlayHandler:(MGLMapSnapshotOverlayHandler)overlayHandler completionHandler:(MGLMapSnapshotCompletionHandler)completion
-{
- if (!mbgl::Scheduler::GetCurrent()) {
- [NSException raise:NSInvalidArgumentException
- format:@"startWithQueue:completionHandler: must be called from a thread with an active run loop."];
- }
-
- if (self.completion) {
- // Consider replacing this exception with an error passed to the completion block.
- [NSException raise:NSInternalInconsistencyException
- format:@"Already started this snapshotter."];
- }
-
- if (self.terminated) {
- [NSException raise:NSInternalInconsistencyException
- format:@"Starting a snapshotter after application termination is not supported."];
- }
-
- self.completion = completion;
- self.resultQueue = queue;
- self.cancelled = NO;
-
- __weak __typeof__(self) weakSelf = self;
- // mbgl::Scheduler::GetCurrent() scheduler means "run callback on current (ie UI/main) thread"
- // capture weakSelf to avoid retain cycle if callback is never called (ie snapshot cancelled)
-
- _snapshotCallback = std::make_unique<mbgl::Actor<mbgl::MapSnapshotter::Callback>>(
- *mbgl::Scheduler::GetCurrent(),
- [=](std::exception_ptr mbglError, mbgl::PremultipliedImage image, mbgl::MapSnapshotter::Attributions attributions, mbgl::MapSnapshotter::PointForFn pointForFn, mbgl::MapSnapshotter::LatLngForFn latLngForFn) {
-
- __typeof__(self) strongSelf = weakSelf;
- // If self had died, _snapshotCallback would have been destroyed and this block would not be executed
- MGLCAssert(strongSelf, @"Snapshot callback executed after being destroyed.");
-
- if (!strongSelf.completion)
- return;
-
- if (mbglError) {
- NSString *description = @(mbgl::util::toString(mbglError).c_str());
- NSDictionary *userInfo = @{NSLocalizedDescriptionKey: description};
- NSError *error = [NSError errorWithDomain:MGLErrorDomain code:MGLErrorCodeSnapshotFailed userInfo:userInfo];
-#if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
- [[MMEEventsManager sharedManager] reportError:error];
-#endif
- // Dispatch to result queue
- dispatch_async(queue, ^{
- strongSelf.completion(nil, error);
- strongSelf.completion = nil;
- });
-
- } else {
-#if TARGET_OS_IPHONE
- MGLImage *mglImage = [[MGLImage alloc] initWithMGLPremultipliedImage:std::move(image) scale:strongSelf.options.scale];
-#else
- MGLImage *mglImage = [[MGLImage alloc] initWithMGLPremultipliedImage:std::move(image)];
- mglImage.size = NSMakeSize(mglImage.size.width / strongSelf.options.scale,
- mglImage.size.height / strongSelf.options.scale);
-#endif
-
- [strongSelf drawAttributedSnapshot:attributions snapshotImage:mglImage pointForFn:pointForFn latLngForFn:latLngForFn overlayHandler:overlayHandler];
- }
- strongSelf->_snapshotCallback = NULL;
-
- });
-
- // Launches snapshot on background Thread owned by mbglMapSnapshotter
- // _snapshotCallback->self() is an ActorRef: if the callback is destroyed, further messages
- // to the callback are just no-ops
- _mbglMapSnapshotter->snapshot(_snapshotCallback->self());
-}
-
-+ (MGLImage*)drawAttributedSnapshotWorker:(mbgl::MapSnapshotter::Attributions)attributions snapshotImage:(MGLImage *)mglImage pointForFn:(mbgl::MapSnapshotter::PointForFn)pointForFn latLngForFn:(mbgl::MapSnapshotter::LatLngForFn)latLngForFn scale:(CGFloat)scale size:(CGSize)size overlayHandler:(MGLMapSnapshotOverlayHandler)overlayHandler {
-
- NSArray<MGLAttributionInfo *>* attributionInfo = [MGLMapSnapshotter generateAttributionInfos:attributions];
-
-#if TARGET_OS_IPHONE
- MGLAttributionInfoStyle attributionInfoStyle = MGLAttributionInfoStyleLong;
- for (NSUInteger styleValue = MGLAttributionInfoStyleLong; styleValue >= MGLAttributionInfoStyleShort; styleValue--) {
- attributionInfoStyle = (MGLAttributionInfoStyle)styleValue;
- CGSize attributionSize = [MGLMapSnapshotter attributionSizeWithLogoStyle:attributionInfoStyle sourceAttributionStyle:attributionInfoStyle attributionInfo:attributionInfo];
- if (attributionSize.width <= mglImage.size.width) {
- break;
- }
- }
-
- UIImage *logoImage = [MGLMapSnapshotter logoImageWithStyle:attributionInfoStyle];
- CGSize attributionBackgroundSize = [MGLMapSnapshotter attributionTextSizeWithStyle:attributionInfoStyle attributionInfo:attributionInfo];
-
- CGRect logoImageRect = CGRectMake(MGLLogoImagePosition.x, mglImage.size.height - (MGLLogoImagePosition.y + logoImage.size.height), logoImage.size.width, logoImage.size.height);
- CGPoint attributionOrigin = CGPointMake(mglImage.size.width - 10 - attributionBackgroundSize.width,
- logoImageRect.origin.y + (logoImageRect.size.height / 2) - (attributionBackgroundSize.height / 2) + 1);
- if (!logoImage) {
- CGSize defaultLogoSize = [MGLMapSnapshotter mapboxLongStyleLogo].size;
- logoImageRect = CGRectMake(0, mglImage.size.height - (MGLLogoImagePosition.y + defaultLogoSize.height), 0, defaultLogoSize.height);
- attributionOrigin = CGPointMake(10, logoImageRect.origin.y + (logoImageRect.size.height / 2) - (attributionBackgroundSize.height / 2) + 1);
- }
-
- CGRect attributionBackgroundFrame = CGRectMake(attributionOrigin.x,
- attributionOrigin.y,
- attributionBackgroundSize.width,
- attributionBackgroundSize.height);
- CGPoint attributionTextPosition = CGPointMake(attributionBackgroundFrame.origin.x + 10,
- attributionBackgroundFrame.origin.y - 1);
-
- CGRect cropRect = CGRectMake(attributionBackgroundFrame.origin.x * mglImage.scale,
- attributionBackgroundFrame.origin.y * mglImage.scale,
- attributionBackgroundSize.width * mglImage.scale,
- attributionBackgroundSize.height * mglImage.scale);
-
-
- UIGraphicsBeginImageContextWithOptions(mglImage.size, NO, scale);
-
- [mglImage drawInRect:CGRectMake(0, 0, mglImage.size.width, mglImage.size.height)];
-
- CGContextRef currentContext = UIGraphicsGetCurrentContext();
-
- if (currentContext && overlayHandler) {
- MGLMapSnapshotOverlay *snapshotOverlay = [[MGLMapSnapshotOverlay alloc] initWithContext:currentContext
- scale:scale
- pointForFn:pointForFn
- latLngForFn:latLngForFn];
- CGContextSaveGState(snapshotOverlay.context);
- overlayHandler(snapshotOverlay);
- CGContextRestoreGState(snapshotOverlay.context);
- currentContext = UIGraphicsGetCurrentContext();
- }
-
- if (!currentContext && overlayHandler) {
- // If the current context has been corrupted by the user,
- // return nil so we can generate an error later.
- return nil;
- }
-
- [logoImage drawInRect:logoImageRect];
-
- UIImage *currentImage = UIGraphicsGetImageFromCurrentImageContext();
- CGImageRef attributionImageRef = CGImageCreateWithImageInRect([currentImage CGImage], cropRect);
- UIImage *attributionImage = [UIImage imageWithCGImage:attributionImageRef];
- CGImageRelease(attributionImageRef);
-
- CIImage *ciAttributionImage = [[CIImage alloc] initWithCGImage:attributionImage.CGImage];
-
- UIImage *blurredAttributionBackground = [MGLMapSnapshotter blurredAttributionBackground:ciAttributionImage];
-
- [blurredAttributionBackground drawInRect:attributionBackgroundFrame];
-
- [MGLMapSnapshotter drawAttributionTextWithStyle:attributionInfoStyle origin:attributionTextPosition attributionInfo:attributionInfo];
-
- UIImage *compositedImage = UIGraphicsGetImageFromCurrentImageContext();
-
- UIGraphicsEndImageContext();
-
- return compositedImage;
-
-#else
-
- NSSize targetSize = NSMakeSize(size.width, size.height);
- NSRect targetFrame = NSMakeRect(0, 0, targetSize.width, targetSize.height);
-
- MGLAttributionInfoStyle attributionInfoStyle = MGLAttributionInfoStyleLong;
- for (NSUInteger styleValue = MGLAttributionInfoStyleLong; styleValue >= MGLAttributionInfoStyleShort; styleValue--) {
- attributionInfoStyle = (MGLAttributionInfoStyle)styleValue;
- CGSize attributionSize = [MGLMapSnapshotter attributionSizeWithLogoStyle:attributionInfoStyle sourceAttributionStyle:attributionInfoStyle attributionInfo:attributionInfo];
- if (attributionSize.width <= mglImage.size.width) {
- break;
- }
- }
-
- NSImage *logoImage = [MGLMapSnapshotter logoImageWithStyle:attributionInfoStyle];
- CGSize attributionBackgroundSize = [MGLMapSnapshotter attributionTextSizeWithStyle:attributionInfoStyle attributionInfo:attributionInfo];
- NSImage *sourceImage = mglImage;
-
- CGRect logoImageRect = CGRectMake(MGLLogoImagePosition.x, MGLLogoImagePosition.y, logoImage.size.width, logoImage.size.height);
- CGPoint attributionOrigin = CGPointMake(targetFrame.size.width - 10 - attributionBackgroundSize.width,
- MGLLogoImagePosition.y + 1);
- if (!logoImage) {
- CGSize defaultLogoSize = [MGLMapSnapshotter mapboxLongStyleLogo].size;
- logoImageRect = CGRectMake(0, MGLLogoImagePosition.y, 0, defaultLogoSize.height);
- attributionOrigin = CGPointMake(10, attributionOrigin.y);
- }
-
- CGRect attributionBackgroundFrame = CGRectMake(attributionOrigin.x,
- attributionOrigin.y,
- attributionBackgroundSize.width,
- attributionBackgroundSize.height);
- CGPoint attributionTextPosition = CGPointMake(attributionBackgroundFrame.origin.x + 10,
- logoImageRect.origin.y + (logoImageRect.size.height / 2) - (attributionBackgroundSize.height / 2));
-
-
- NSImage *compositedImage = nil;
- NSImageRep *sourceImageRep = [sourceImage bestRepresentationForRect:targetFrame
- context:nil
- hints:nil];
- compositedImage = [[NSImage alloc] initWithSize:targetSize];
-
- [compositedImage lockFocus];
-
- [sourceImageRep drawInRect: targetFrame];
-
- NSGraphicsContext *currentContext = [NSGraphicsContext currentContext];
- if (currentContext && overlayHandler) {
- MGLMapSnapshotOverlay *snapshotOverlay = [[MGLMapSnapshotOverlay alloc] initWithContext:currentContext.CGContext
- scale:scale
- pointForFn:pointForFn
- latLngForFn:latLngForFn];
- [currentContext saveGraphicsState];
- overlayHandler(snapshotOverlay);
- [currentContext restoreGraphicsState];
- currentContext = [NSGraphicsContext currentContext];
- }
-
- if (!currentContext && overlayHandler) {
- // If the current context has been corrupted by the user,
- // return nil so we can generate an error later.
- return nil;
- }
-
- if (logoImage) {
- [logoImage drawInRect:logoImageRect];
- }
-
- NSBitmapImageRep *attributionBackground = [[NSBitmapImageRep alloc] initWithFocusedViewRect:attributionBackgroundFrame];
-
- CIImage *attributionBackgroundImage = [[CIImage alloc] initWithCGImage:[attributionBackground CGImage]];
-
- NSImage *blurredAttributionBackground = [MGLMapSnapshotter blurredAttributionBackground:attributionBackgroundImage];
-
- [blurredAttributionBackground drawInRect:attributionBackgroundFrame];
-
- [MGLMapSnapshotter drawAttributionTextWithStyle:attributionInfoStyle origin:attributionTextPosition attributionInfo:attributionInfo];
-
- [compositedImage unlockFocus];
-
- return compositedImage;
-#endif
-}
-
-- (void)drawAttributedSnapshot:(mbgl::MapSnapshotter::Attributions)attributions snapshotImage:(MGLImage *)mglImage pointForFn:(mbgl::MapSnapshotter::PointForFn)pointForFn latLngForFn:(mbgl::MapSnapshotter::LatLngForFn)latLngForFn overlayHandler:(MGLMapSnapshotOverlayHandler)overlayHandler {
-
- // Process image watermark in a work queue
- dispatch_queue_t workQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
- dispatch_queue_t resultQueue = self.resultQueue;
-
- // Capture scale and size by value to avoid accessing self from another thread
- CGFloat scale = self.options.scale;
- CGSize size = self.options.size;
-
- // pointForFn is a copyable std::function that captures state by value: see MapSnapshotter::Impl::snapshot
- __weak __typeof__(self) weakself = self;
-
- dispatch_async(workQueue, ^{
- // Call a class method to ensure we're not accidentally capturing self
- MGLImage *compositedImage = [MGLMapSnapshotter drawAttributedSnapshotWorker:attributions snapshotImage:mglImage pointForFn:pointForFn latLngForFn:latLngForFn scale:scale size:size overlayHandler:overlayHandler];
-
- // Dispatch result to origin queue
- dispatch_async(resultQueue, ^{
- __typeof__(self) strongself = weakself;
-
- if (strongself.completion) {
-
- if (!compositedImage) {
- NSDictionary *userInfo = @{NSLocalizedDescriptionKey: @"Failed to generate composited snapshot."};
- NSError *error = [NSError errorWithDomain:MGLErrorDomain
- code:MGLErrorCodeSnapshotFailed
- userInfo:userInfo];
-
- strongself.completion(nil, error);
- strongself.completion = nil;
- } else {
- MGLMapSnapshot* snapshot = [[MGLMapSnapshot alloc] initWithImage:compositedImage
- scale:scale
- pointForFn:pointForFn
- latLngForFn:latLngForFn];
- strongself.completion(snapshot, nil);
- strongself.completion = nil;
- }
- }
- });
- });
-}
-
-+ (NSArray<MGLAttributionInfo *>*) generateAttributionInfos:(mbgl::MapSnapshotter::Attributions)attributions {
- NSMutableArray *infos = [NSMutableArray array];
-
-#if TARGET_OS_IPHONE
- CGFloat fontSize = [UIFont smallSystemFontSize];
- UIColor *attributeFontColor = [UIColor blackColor];
-#else
- CGFloat fontSize = [NSFont systemFontSizeForControlSize:NSMiniControlSize];
- NSColor *attributeFontColor = [NSColor blackColor];
-#endif
- for (auto attribution = attributions.begin(); attribution != attributions.end(); ++attribution) {
- NSString *attributionHTMLString = @(attribution->c_str());
- NSArray *tileSetInfos = [MGLAttributionInfo attributionInfosFromHTMLString:attributionHTMLString
- fontSize:fontSize
- linkColor:attributeFontColor];
- [infos growArrayByAddingAttributionInfosFromArray:tileSetInfos];
- }
- return infos;
-}
-
-+ (void)drawAttributionTextWithStyle:(MGLAttributionInfoStyle)attributionInfoStyle origin:(CGPoint)origin attributionInfo:(NSArray<MGLAttributionInfo *>*)attributionInfo
-{
- for (MGLAttributionInfo *info in attributionInfo) {
- if (info.isFeedbackLink) {
- continue;
- }
- NSAttributedString *attribution = [info titleWithStyle:attributionInfoStyle];
- [attribution drawAtPoint:origin];
-
- origin.x += [attribution size].width + 10;
- }
-}
-
-+ (MGLImage *)blurredAttributionBackground:(CIImage *)backgroundImage
-{
- CGAffineTransform transform = CGAffineTransformIdentity;
- CIFilter *clamp = [CIFilter filterWithName:@"CIAffineClamp"];
- [clamp setValue:backgroundImage forKey:kCIInputImageKey];
- [clamp setValue:[NSValue valueWithBytes:&transform objCType:@encode(CGAffineTransform)] forKey:@"inputTransform"];
-
- CIFilter *attributionBlurFilter = [CIFilter filterWithName:@"CIGaussianBlur"];
- [attributionBlurFilter setValue:[clamp outputImage] forKey:kCIInputImageKey];
- [attributionBlurFilter setValue:@10 forKey:kCIInputRadiusKey];
-
- CIFilter *attributionColorFilter = [CIFilter filterWithName:@"CIColorControls"];
- [attributionColorFilter setValue:[attributionBlurFilter outputImage] forKey:kCIInputImageKey];
- [attributionColorFilter setValue:@(0.1) forKey:kCIInputBrightnessKey];
-
- CIImage *blurredImage = attributionColorFilter.outputImage;
-
- CIContext *ctx = [CIContext contextWithOptions:nil];
- CGImageRef cgimg = [ctx createCGImage:blurredImage fromRect:[backgroundImage extent]];
- MGLImage *image;
-
-#if TARGET_OS_IPHONE
- image = [UIImage imageWithCGImage:cgimg];
-#else
- image = [[NSImage alloc] initWithCGImage:cgimg size:[backgroundImage extent].size];
-#endif
-
- CGImageRelease(cgimg);
- return image;
-}
-
-+ (MGLImage *)logoImageWithStyle:(MGLAttributionInfoStyle)style
-{
- MGLImage *logoImage;
- switch (style) {
- case MGLAttributionInfoStyleLong:
- logoImage = [MGLMapSnapshotter mapboxLongStyleLogo];
- break;
- case MGLAttributionInfoStyleMedium:
-#if TARGET_OS_IPHONE
- logoImage = [UIImage imageNamed:@"mapbox_helmet" inBundle:[NSBundle mgl_frameworkBundle] compatibleWithTraitCollection:nil];
-#else
- logoImage = [[NSImage alloc] initWithContentsOfFile:[[NSBundle mgl_frameworkBundle] pathForResource:@"mapbox_helmet" ofType:@"pdf"]];
-#endif
- break;
- case MGLAttributionInfoStyleShort:
- logoImage = nil;
- break;
- }
- return logoImage;
-}
-
-+ (MGLImage *)mapboxLongStyleLogo
-{
- MGLImage *logoImage;
-#if TARGET_OS_IPHONE
- logoImage =[UIImage imageNamed:@"mapbox" inBundle:[NSBundle mgl_frameworkBundle] compatibleWithTraitCollection:nil];
-#else
- logoImage = [[NSImage alloc] initWithContentsOfFile:[[NSBundle mgl_frameworkBundle] pathForResource:@"mapbox" ofType:@"pdf"]];
-#endif
- return logoImage;
-}
-
-+ (CGSize)attributionSizeWithLogoStyle:(MGLAttributionInfoStyle)logoStyle sourceAttributionStyle:(MGLAttributionInfoStyle)attributionStyle attributionInfo:(NSArray<MGLAttributionInfo *>*)attributionInfo
-{
- MGLImage *logoImage = [self logoImageWithStyle:logoStyle];
-
- CGSize attributionBackgroundSize = [MGLMapSnapshotter attributionTextSizeWithStyle:attributionStyle attributionInfo:attributionInfo];
-
- CGSize attributionSize = CGSizeZero;
-
- if (logoImage) {
- attributionSize.width = MGLLogoImagePosition.x + logoImage.size.width + 10;
- }
- attributionSize.width = attributionSize.width + 10 + attributionBackgroundSize.width + 10;
- attributionSize.height = MAX(logoImage.size.height, attributionBackgroundSize.height);
-
- return attributionSize;
-}
-
-+ (CGSize)attributionTextSizeWithStyle:(MGLAttributionInfoStyle)attributionStyle attributionInfo:(NSArray<MGLAttributionInfo *>*)attributionInfo
-{
- CGSize attributionBackgroundSize = CGSizeMake(10, 0);
- for (MGLAttributionInfo *info in attributionInfo) {
- if (info.isFeedbackLink) {
- continue;
- }
- CGSize attributionSize = [info titleWithStyle:attributionStyle].size;
- attributionBackgroundSize.width += attributionSize.width + 10;
- attributionBackgroundSize.height = MAX(attributionSize.height, attributionBackgroundSize.height);
- }
-
- return attributionBackgroundSize;
-}
-
-- (void)cancel
-{
- MGLLogInfo(@"Cancelling snapshotter.");
- self.cancelled = YES;
-
- if (_snapshotCallback) {
- [MGLMapSnapshotter completeWithErrorCode:MGLErrorCodeSnapshotFailed
- description:[NSString stringWithFormat:@"MGLMapSnapshotter cancelled from %s", __PRETTY_FUNCTION__]
- onQueue:self.resultQueue
- completion:self.completion];
- self.completion = nil;
- }
-
- _snapshotCallback.reset();
- _mbglMapSnapshotter.reset();
-}
-
-+ (void)completeWithErrorCode:(MGLErrorCode)errorCode description:(nonnull NSString*)description onQueue:(dispatch_queue_t)queue completion:(MGLMapSnapshotCompletionHandler)completion {
- // The snapshot hasn't completed, so we should alert the caller
- if (completion && queue) {
- dispatch_async(queue, ^{
- NSDictionary *userInfo = @{NSLocalizedDescriptionKey: description};
- NSError *error = [NSError errorWithDomain:MGLErrorDomain
- code:errorCode
- userInfo:userInfo];
-#if TARGET_OS_IPHONE || TARGET_OS_SIMULATOR
- [[MMEEventsManager sharedManager] reportError:error];
-#endif
- completion(NULL, error);
- });
- }
-}
-
-- (void)setOptions:(MGLMapSnapshotOptions *)options
-{
- if (_terminated) {
- [NSException raise:NSInternalInconsistencyException
- format:@"Calling MGLMapSnapshotter.options after application termination is not supported."];
- }
-
- MGLLogDebug(@"Setting options: %@", options);
-
- if (_completion) {
- [self cancel];
- }
-
- _cancelled = NO;
- _options = options;
-
- auto mbglFileSource = [[MGLOfflineStorage sharedOfflineStorage] mbglFileSource];
-
- std::string styleURL = std::string([options.styleURL.absoluteString UTF8String]);
- std::pair<bool, std::string> style = std::make_pair(false, styleURL);
-
- // Size; taking into account the minimum texture size for OpenGL ES
- // For non retina screens the ratio is 1:1 MGLSnapshotterMinimumPixelSize
- mbgl::Size size = {
- static_cast<uint32_t>(MAX(options.size.width, MGLSnapshotterMinimumPixelSize)),
- static_cast<uint32_t>(MAX(options.size.height, MGLSnapshotterMinimumPixelSize))
- };
-
- float pixelRatio = MAX(options.scale, 1);
-
- // Camera options
- mbgl::CameraOptions cameraOptions;
- if (CLLocationCoordinate2DIsValid(options.camera.centerCoordinate)) {
- cameraOptions.center = MGLLatLngFromLocationCoordinate2D(options.camera.centerCoordinate);
- }
- cameraOptions.bearing = MAX(0, options.camera.heading);
- cameraOptions.zoom = MAX(0, options.zoomLevel);
- cameraOptions.pitch = MAX(0, options.camera.pitch);
-
- // Region
- mbgl::optional<mbgl::LatLngBounds> coordinateBounds;
- if (!MGLCoordinateBoundsIsEmpty(options.coordinateBounds)) {
- coordinateBounds = MGLLatLngBoundsFromCoordinateBounds(options.coordinateBounds);
- }
-
- // App-global configuration
- MGLRendererConfiguration* config = [MGLRendererConfiguration currentConfiguration];
-
- mbgl::ResourceOptions resourceOptions;
- resourceOptions.withCachePath([[MGLOfflineStorage sharedOfflineStorage] mbglCachePath])
- .withAssetPath([NSBundle mainBundle].resourceURL.path.UTF8String);
-
- // Create the snapshotter
- _mbglMapSnapshotter = std::make_unique<mbgl::MapSnapshotter>(
- style, size, pixelRatio, cameraOptions, coordinateBounds, config.localFontFamilyName, resourceOptions);
-}
-
-@end