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WKFullScreenWindowControllerIOS.mm
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WKFullScreenWindowControllerIOS.mm
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/*
* Copyright (C) 2017-2018 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
#import "WKFullScreenWindowControllerIOS.h"
#if PLATFORM(IOS_FAMILY) && ENABLE(FULLSCREEN_API)
#import "UIKitSPI.h"
#import "VideoFullscreenManagerProxy.h"
#import "WKFullScreenViewController.h"
#import "WKFullscreenStackView.h"
#import "WKWebView.h"
#import "WKWebViewInternal.h"
#import "WKWebViewPrivateForTesting.h"
#import "WebFullScreenManagerProxy.h"
#import "WebPageProxy.h"
#import <Foundation/Foundation.h>
#import <Security/SecCertificate.h>
#import <Security/SecTrust.h>
#import <UIKit/UIVisualEffectView.h>
#import <WebCore/FloatRect.h>
#import <WebCore/GeometryUtilities.h>
#import <WebCore/IntRect.h>
#import <WebCore/LocalizedStrings.h>
#if HAVE(PIP_CONTROLLER)
#import <WebCore/VideoFullscreenInterfacePiP.h>
#else
#import <WebCore/VideoFullscreenInterfaceAVKit.h>
#endif
#import <WebCore/VideoFullscreenModel.h>
#import <WebCore/ViewportArguments.h>
#import <pal/spi/cf/CFNetworkSPI.h>
#import <pal/spi/cocoa/NSStringSPI.h>
#import <pal/spi/cocoa/QuartzCoreSPI.h>
#import <pal/spi/cocoa/URLFormattingSPI.h>
#import <wtf/SoftLinking.h>
#import <wtf/cocoa/NSURLExtras.h>
#import <wtf/spi/cocoa/SecuritySPI.h>
#if !HAVE(URL_FORMATTING)
SOFT_LINK_PRIVATE_FRAMEWORK_OPTIONAL(LinkPresentation)
#endif
#if HAVE(UIKIT_WEBKIT_INTERNALS)
#include <WebKitAdditions/WKFullscreenWindowControllerAdditions.h>
#endif
namespace WebKit {
using namespace WebKit;
using namespace WebCore;
static CGSize sizeExpandedToSize(CGSize initial, CGSize other)
{
return CGSizeMake(std::max(initial.width, other.width), std::max(initial.height, other.height));
}
static CGRect safeInlineRect(CGRect initial, CGSize parentSize)
{
if (initial.origin.y > parentSize.height || initial.origin.y < -initial.size.height || initial.origin.x > parentSize.width || initial.origin.x < -initial.size.width)
return CGRectMake(parentSize.width / 2, parentSize.height / 2, 1, 1);
return initial;
}
static void replaceViewWithView(UIView *view, UIView *otherView)
{
[CATransaction begin];
[CATransaction setDisableActions:YES];
[otherView setFrame:[view frame]];
[otherView setAutoresizingMask:[view autoresizingMask]];
[[view superview] insertSubview:otherView aboveSubview:view];
[view removeFromSuperview];
[CATransaction commit];
}
enum FullScreenState : NSInteger {
NotInFullScreen,
WaitingToEnterFullScreen,
EnteringFullScreen,
InFullScreen,
WaitingToExitFullScreen,
ExitingFullScreen,
};
struct WKWebViewState {
float _savedTopContentInset = 0.0;
CGFloat _savedPageScale = 1;
CGFloat _savedViewScale = 1.0;
CGFloat _savedZoomScale = 1;
UIEdgeInsets _savedEdgeInset = UIEdgeInsetsZero;
UIEdgeInsets _savedObscuredInsets = UIEdgeInsetsZero;
UIEdgeInsets _savedScrollIndicatorInsets = UIEdgeInsetsZero;
CGPoint _savedContentOffset = CGPointZero;
CGFloat _savedMinimumZoomScale = 1;
CGFloat _savedMaximumZoomScale = 1;
BOOL _savedBouncesZoom = NO;
BOOL _savedForceAlwaysUserScalable = NO;
CGFloat _savedMinimumEffectiveDeviceWidth = 0;
void applyTo(WKWebView* webView)
{
[webView _setPageScale:_savedPageScale withOrigin:CGPointMake(0, 0)];
[webView _setObscuredInsets:_savedObscuredInsets];
[[webView scrollView] setContentInset:_savedEdgeInset];
[[webView scrollView] setContentOffset:_savedContentOffset];
[[webView scrollView] setScrollIndicatorInsets:_savedScrollIndicatorInsets];
if (auto page = webView._page) {
page->setTopContentInset(_savedTopContentInset);
page->setForceAlwaysUserScalable(_savedForceAlwaysUserScalable);
}
[webView _setViewScale:_savedViewScale];
[[webView scrollView] setZoomScale:_savedZoomScale];
webView.scrollView.minimumZoomScale = _savedMinimumZoomScale;
webView.scrollView.maximumZoomScale = _savedMaximumZoomScale;
webView.scrollView.bouncesZoom = _savedBouncesZoom;
webView._minimumEffectiveDeviceWidth = _savedMinimumEffectiveDeviceWidth;
}
void store(WKWebView* webView)
{
_savedPageScale = [webView _pageScale];
_savedObscuredInsets = [webView _obscuredInsets];
_savedEdgeInset = [[webView scrollView] contentInset];
_savedContentOffset = [[webView scrollView] contentOffset];
ALLOW_DEPRECATED_DECLARATIONS_BEGIN
_savedScrollIndicatorInsets = [[webView scrollView] scrollIndicatorInsets];
ALLOW_DEPRECATED_DECLARATIONS_END
if (auto page = webView._page) {
_savedTopContentInset = page->topContentInset();
_savedForceAlwaysUserScalable = page->forceAlwaysUserScalable();
}
_savedViewScale = [webView _viewScale];
_savedZoomScale = [[webView scrollView] zoomScale];
_savedMinimumZoomScale = webView.scrollView.minimumZoomScale;
_savedMaximumZoomScale = webView.scrollView.maximumZoomScale;
_savedBouncesZoom = webView.scrollView.bouncesZoom;
_savedMinimumEffectiveDeviceWidth = webView._minimumEffectiveDeviceWidth;
}
};
} // namespace WebKit
static constexpr NSTimeInterval kAnimationDuration = 0.2;
#if HAVE(UIKIT_WEBKIT_INTERNALS)
static constexpr CGFloat kFullScreenWindowCornerRadius = 12;
#endif
#pragma mark -
@interface WKFullscreenAnimationController : NSObject <UIViewControllerAnimatedTransitioning, UIViewControllerInteractiveTransitioning>
@property (retain, nonatomic) UIViewController* viewController;
@property (nonatomic) CGRect initialFrame;
@property (nonatomic) CGRect finalFrame;
@property (nonatomic, getter=isAnimatingIn) BOOL animatingIn;
@property (readonly, nonatomic) id<UIViewControllerContextTransitioning> context;
@end
@implementation WKFullscreenAnimationController {
CGRect _initialMaskViewBounds;
CGRect _finalMaskViewBounds;
CGAffineTransform _initialAnimatingViewTransform;
CGAffineTransform _finalAnimatingViewTransform;
CGPoint _initialMaskViewCenter;
CGPoint _finalMaskViewCenter;
RetainPtr<UIView> _maskView;
RetainPtr<UIView> _animatingView;
RetainPtr<id<UIViewControllerContextTransitioning>> _context;
CGFloat _initialBackgroundAlpha;
CGFloat _finalBackgroundAlpha;
}
- (void)dealloc
{
[_viewController release];
[super dealloc];
}
- (id<UIViewControllerContextTransitioning>)context
{
return _context.get();
}
- (void)_createViewsForTransitionContext:(id<UIViewControllerContextTransitioning>)transitionContext
{
_maskView = adoptNS([[UIView alloc] init]);
[_maskView setBackgroundColor:[UIColor blackColor]];
[_maskView setBounds:_initialMaskViewBounds];
[_maskView setCenter:_initialMaskViewCenter];
[_animatingView setMaskView:_maskView.get()];
[_animatingView setTransform:_initialAnimatingViewTransform];
UIView *containerView = [transitionContext containerView];
[containerView addSubview:_animatingView.get()];
}
- (NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext
{
return kAnimationDuration;
}
- (void)configureInitialAndFinalStatesForTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
_context = transitionContext;
UIView *fromView = [transitionContext viewForKey:UITransitionContextFromViewKey];
UIView *toView = [transitionContext viewForKey:UITransitionContextToViewKey];
CGRect inlineFrame = _animatingIn ? _initialFrame : _finalFrame;
CGRect fullscreenFrame = _animatingIn ? _finalFrame : _initialFrame;
_animatingView = _animatingIn ? toView : fromView;
CGRect boundsRect = WebCore::largestRectWithAspectRatioInsideRect(WebCore::FloatRect(inlineFrame).size().aspectRatio(), fullscreenFrame);
boundsRect.origin = CGPointZero;
_initialMaskViewBounds = _animatingIn ? boundsRect : [_animatingView bounds];
_initialMaskViewCenter = CGPointMake(CGRectGetMidX([_animatingView bounds]), CGRectGetMidY([_animatingView bounds]));
_finalMaskViewBounds = _animatingIn ? [_animatingView bounds] : boundsRect;
_finalMaskViewCenter = CGPointMake(CGRectGetMidX([_animatingView bounds]), CGRectGetMidY([_animatingView bounds]));
WebCore::FloatRect scaleRect = WebCore::smallestRectWithAspectRatioAroundRect(WebCore::FloatRect(fullscreenFrame).size().aspectRatio(), inlineFrame);
CGAffineTransform scaleTransform = CGAffineTransformMakeScale(scaleRect.width() / fullscreenFrame.size.width, scaleRect.height() / fullscreenFrame.size.height);
CGAffineTransform translateTransform = CGAffineTransformMakeTranslation(CGRectGetMidX(inlineFrame) - CGRectGetMidX(fullscreenFrame), CGRectGetMidY(inlineFrame) - CGRectGetMidY(fullscreenFrame));
CGAffineTransform finalTransform = CGAffineTransformConcat(scaleTransform, translateTransform);
_initialAnimatingViewTransform = _animatingIn ? finalTransform : CGAffineTransformIdentity;
_finalAnimatingViewTransform = _animatingIn ? CGAffineTransformIdentity : finalTransform;
_initialBackgroundAlpha = _animatingIn ? 0 : 1;
_finalBackgroundAlpha = _animatingIn ? 1 : 0;
}
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
[self configureInitialAndFinalStatesForTransition:transitionContext];
[self _createViewsForTransitionContext:transitionContext];
UIWindow *window = [transitionContext containerView].window;
window.backgroundColor = [UIColor colorWithWhite:0 alpha:_initialBackgroundAlpha];
[UIView animateWithDuration:kAnimationDuration delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
[self updateWithProgress:1];
} completion:^(BOOL finished) {
[self animationEnded:![transitionContext transitionWasCancelled]];
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}
- (void)animationEnded:(BOOL)transitionCompleted
{
if (([self isAnimatingIn] && !transitionCompleted) || (![self isAnimatingIn] && transitionCompleted))
[_animatingView removeFromSuperview];
[_animatingView setMaskView:nil];
_maskView = nil;
_animatingView = nil;
}
- (void)startInteractiveTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
[self configureInitialAndFinalStatesForTransition:transitionContext];
[self _createViewsForTransitionContext:transitionContext];
}
- (void)updateWithProgress:(CGFloat)progress
{
CGAffineTransform progressTransform = _initialAnimatingViewTransform;
progressTransform.a += progress * (_finalAnimatingViewTransform.a - _initialAnimatingViewTransform.a);
progressTransform.b += progress * (_finalAnimatingViewTransform.b - _initialAnimatingViewTransform.b);
progressTransform.c += progress * (_finalAnimatingViewTransform.c - _initialAnimatingViewTransform.c);
progressTransform.d += progress * (_finalAnimatingViewTransform.d - _initialAnimatingViewTransform.d);
progressTransform.tx += progress * (_finalAnimatingViewTransform.tx - _initialAnimatingViewTransform.tx);
progressTransform.ty += progress * (_finalAnimatingViewTransform.ty - _initialAnimatingViewTransform.ty);
[_animatingView setTransform:progressTransform];
CGRect progressBounds = _initialMaskViewBounds;
progressBounds.origin.x += progress * (_finalMaskViewBounds.origin.x - _initialMaskViewBounds.origin.x);
progressBounds.origin.y += progress * (_finalMaskViewBounds.origin.y - _initialMaskViewBounds.origin.y);
progressBounds.size.width += progress * (_finalMaskViewBounds.size.width - _initialMaskViewBounds.size.width);
progressBounds.size.height += progress * (_finalMaskViewBounds.size.height - _initialMaskViewBounds.size.height);
[_maskView setBounds:progressBounds];
CGPoint progressCenter = _initialMaskViewCenter;
progressCenter.x += progress * (_finalMaskViewCenter.x - _finalMaskViewCenter.x);
progressCenter.y += progress * (_finalMaskViewCenter.y - _finalMaskViewCenter.y);
[_maskView setCenter:progressCenter];
UIWindow *window = [_animatingView window];
window.backgroundColor = [UIColor colorWithWhite:0 alpha:_initialBackgroundAlpha + progress * (_finalBackgroundAlpha - _initialBackgroundAlpha)];
}
- (void)updateWithProgress:(CGFloat)progress scale:(CGFloat)scale translation:(CGSize)translation anchor:(CGPoint)anchor
{
CGAffineTransform progressTransform = _initialAnimatingViewTransform;
progressTransform = CGAffineTransformScale(progressTransform, scale, scale);
progressTransform = CGAffineTransformTranslate(progressTransform, translation.width, translation.height);
[_animatingView setTransform:progressTransform];
UIWindow *window = [_animatingView window];
window.backgroundColor = [UIColor colorWithWhite:0 alpha:_initialBackgroundAlpha + progress * (_finalBackgroundAlpha - _initialBackgroundAlpha)];
}
- (void)updateWithProgress:(CGFloat)progress translation:(CGSize)translation anchor:(CGPoint)anchor
{
CGAffineTransform progressTransform = _initialAnimatingViewTransform;
progressTransform.a += progress * (_finalAnimatingViewTransform.a - _initialAnimatingViewTransform.a);
progressTransform.b += progress * (_finalAnimatingViewTransform.b - _initialAnimatingViewTransform.b);
progressTransform.c += progress * (_finalAnimatingViewTransform.c - _initialAnimatingViewTransform.c);
progressTransform.d += progress * (_finalAnimatingViewTransform.d - _initialAnimatingViewTransform.d);
progressTransform.tx += _initialAnimatingViewTransform.tx + translation.width;
progressTransform.ty += _initialAnimatingViewTransform.ty + translation.height;
[_animatingView setTransform:progressTransform];
UIWindow *window = [_animatingView window];
window.backgroundColor = [UIColor colorWithWhite:0 alpha:_initialBackgroundAlpha + progress * (_finalBackgroundAlpha - _initialBackgroundAlpha)];
}
- (void)end:(BOOL)cancelled {
if (cancelled) {
[UIView animateWithDuration:kAnimationDuration animations:^{
[self updateWithProgress:0];
} completion:^(BOOL finished) {
[_context cancelInteractiveTransition];
[_context completeTransition:NO];
}];
} else {
[UIView animateWithDuration:kAnimationDuration animations:^{
[self updateWithProgress:1];
} completion:^(BOOL finished) {
[_context finishInteractiveTransition];
[_context completeTransition:YES];
}];
}
}
@end
#pragma mark -
@interface WKFullScreenInteractiveTransition : NSObject<UIViewControllerInteractiveTransitioning>
- (id)initWithAnimator:(WKFullscreenAnimationController *)animator anchor:(CGPoint)point;
@property (nonatomic, readonly) WKFullscreenAnimationController *animator;
@end
@implementation WKFullScreenInteractiveTransition {
RetainPtr<WKFullscreenAnimationController> _animator;
RetainPtr<id<UIViewControllerContextTransitioning>> _context;
CGPoint _anchor;
}
- (id)initWithAnimator:(WKFullscreenAnimationController *)animator anchor:(CGPoint)point
{
if (!(self = [super init]))
return nil;
_animator = animator;
_anchor = point;
return self;
}
- (WKFullscreenAnimationController *)animator
{
return _animator.get();
}
- (BOOL)wantsInteractiveStart
{
return YES;
}
- (void)startInteractiveTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
_context = transitionContext;
[_animator startInteractiveTransition:transitionContext];
}
- (void)updateInteractiveTransition:(CGFloat)progress withTranslation:(CGSize)translation
{
[_animator updateWithProgress:progress translation:translation anchor:_anchor];
[_context updateInteractiveTransition:progress];
}
- (void)updateInteractiveTransition:(CGFloat)progress withScale:(CGFloat)scale andTranslation:(CGSize)translation
{
[_animator updateWithProgress:progress scale:scale translation:translation anchor:_anchor];
[_context updateInteractiveTransition:progress];
}
- (void)cancelInteractiveTransition
{
[_animator end:YES];
}
- (void)finishInteractiveTransition
{
[_animator end:NO];
}
@end
#pragma mark -
@interface WKFullScreenWindowController () <UIGestureRecognizerDelegate>
@property (weak, nonatomic) WKWebView *_webView; // Cannot be retained, see <rdar://problem/14884666>.
- (void)placeholderWillMoveToSuperview:(UIView *)superview;
@end
#pragma mark -
@interface WKFullScreenPlaceholderView : UIView
@property (weak, nonatomic) WKFullScreenWindowController *parent;
@end
@implementation WKFullScreenPlaceholderView
- (void)willMoveToSuperview:(UIView *)newSuperview
{
[super viewWillMoveToSuperview:newSuperview];
[self.parent placeholderWillMoveToSuperview:newSuperview];
}
@end
#pragma mark -
@interface WKFullScreenWindowController (VideoFullscreenManagerProxyClient)
- (void)didEnterPictureInPicture;
- (void)didExitPictureInPicture;
@end
#pragma mark -
@implementation WKFullScreenWindowController {
RetainPtr<WKFullScreenPlaceholderView> _webViewPlaceholder;
WebKit::FullScreenState _fullScreenState;
WebKit::WKWebViewState _viewState;
RetainPtr<UIWindow> _window;
RetainPtr<UIViewController> _rootViewController;
RetainPtr<UIViewController> _viewControllerForPresentation;
RetainPtr<WKFullScreenViewController> _fullscreenViewController;
#if ENABLE(FULLSCREEN_DISMISSAL_GESTURES)
RetainPtr<UISwipeGestureRecognizer> _startDismissGestureRecognizer;
RetainPtr<UIPanGestureRecognizer> _interactivePanDismissGestureRecognizer;
RetainPtr<UIPinchGestureRecognizer> _interactivePinchDismissGestureRecognizer;
RetainPtr<WKFullScreenInteractiveTransition> _interactiveDismissTransitionCoordinator;
#endif
#if ENABLE(FULLSCREEN_WINDOW_EFFECTS)
RetainPtr<UIWindow> _lastKnownParentWindow;
#endif
std::unique_ptr<WebKit::VideoFullscreenManagerProxy::VideoInPictureInPictureDidChangeObserver> _pipObserver;
BOOL _shouldReturnToFullscreenFromPictureInPicture;
BOOL _enterFullscreenNeedsExitPictureInPicture;
BOOL _returnToFullscreenFromPictureInPicture;
BOOL _blocksReturnToFullscreenFromPictureInPicture;
CGRect _initialFrame;
CGRect _finalFrame;
CGSize _originalWindowSize;
RetainPtr<NSString> _EVOrganizationName;
BOOL _EVOrganizationNameIsValid;
BOOL _inInteractiveDismiss;
BOOL _exitRequested;
BOOL _enterRequested;
BOOL _exitingFullScreen;
RetainPtr<id> _notificationListener;
}
#pragma mark -
#pragma mark Initialization
- (id)initWithWebView:(WKWebView *)webView
{
if (!(self = [super init]))
return nil;
self._webView = webView;
return self;
}
- (void)dealloc
{
[NSObject cancelPreviousPerformRequestsWithTarget:self];
[[NSNotificationCenter defaultCenter] removeObserver:self];
[super dealloc];
}
#pragma mark -
#pragma mark Accessors
- (BOOL)isFullScreen
{
return _fullScreenState == WebKit::WaitingToEnterFullScreen
|| _fullScreenState == WebKit::EnteringFullScreen
|| _fullScreenState == WebKit::InFullScreen;
}
- (UIView *)webViewPlaceholder
{
return _webViewPlaceholder.get();
}
#pragma mark -
#pragma mark External Interface
- (void)setSupportedOrientations:(UIInterfaceOrientationMask)orientations
{
[_fullscreenViewController setSupportedOrientations:orientations];
}
- (void)resetSupportedOrientations
{
[_fullscreenViewController resetSupportedOrientations];
}
- (void)enterFullScreen:(CGSize)videoDimensions
{
if ([self isFullScreen])
return;
RetainPtr<WKWebView> webView = self._webView;
auto page = [webView _page];
auto* manager = self._manager;
if (!page || !manager)
return;
[self _invalidateEVOrganizationName];
#if ENABLE(FULLSCREEN_WINDOW_EFFECTS)
_lastKnownParentWindow = [webView window];
#endif
_fullScreenState = WebKit::WaitingToEnterFullScreen;
_blocksReturnToFullscreenFromPictureInPicture = manager->blocksReturnToFullscreenFromPictureInPicture();
_originalWindowSize = [webView window].frame.size;
_window = adoptNS([[UIWindow alloc] initWithWindowScene:[[webView window] windowScene]]);
[_window setBackgroundColor:[UIColor clearColor]];
[_window setWindowLevel:UIWindowLevelNormal - 1];
[_window setHidden:NO];
#if HAVE(UIKIT_WEBKIT_INTERNALS)
CGFloat aspectRatio = videoDimensions.height ? (videoDimensions.width / videoDimensions.height) : (960.0 / 540.0);
[_window setFrame:CGRectMake(0, 0, 540 * aspectRatio, 540)];
[_window setClipsToBounds:YES];
[_window _setContinuousCornerRadius:kFullScreenWindowCornerRadius];
[_window setNeedsLayout];
[_window layoutIfNeeded];
#endif
_rootViewController = adoptNS([[UIViewController alloc] init]);
_rootViewController.get().view = adoptNS([[UIView alloc] initWithFrame:_window.get().bounds]).get();
_rootViewController.get().view.backgroundColor = [UIColor clearColor];
_rootViewController.get().view.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
[_rootViewController setModalPresentationStyle:UIModalPresentationCustom];
[_rootViewController setTransitioningDelegate:self];
_window.get().rootViewController = _rootViewController.get();
_fullscreenViewController = adoptNS([[WKFullScreenViewController alloc] initWithWebView:webView.get()]);
[_fullscreenViewController setModalPresentationStyle:UIModalPresentationCustom];
[_fullscreenViewController setTransitioningDelegate:self];
[_fullscreenViewController setModalPresentationCapturesStatusBarAppearance:YES];
[_fullscreenViewController setTarget:self];
[_fullscreenViewController setExitFullScreenAction:@selector(requestExitFullScreen)];
_fullscreenViewController.get().view.frame = _rootViewController.get().view.bounds;
#if HAVE(UIKIT_WEBKIT_INTERNALS)
[_fullscreenViewController hideMediaControls:manager->isVideoElementWithControls()];
#endif
[self _updateLocationInfo];
#if ENABLE(FULLSCREEN_DISMISSAL_GESTURES)
_startDismissGestureRecognizer = adoptNS([[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(_startToDismissFullscreenChanged:)]);
[_startDismissGestureRecognizer setDelegate:self];
[_startDismissGestureRecognizer setCancelsTouchesInView:YES];
[_startDismissGestureRecognizer setNumberOfTouchesRequired:1];
[_startDismissGestureRecognizer setDirection:UISwipeGestureRecognizerDirectionDown];
[_fullscreenViewController.get().view addGestureRecognizer:_startDismissGestureRecognizer.get()];
_interactivePanDismissGestureRecognizer = adoptNS([[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(_interactiveDismissChanged:)]);
[_interactivePanDismissGestureRecognizer setDelegate:self];
[_interactivePanDismissGestureRecognizer setCancelsTouchesInView:NO];
[_fullscreenViewController.get().view addGestureRecognizer:_interactivePanDismissGestureRecognizer.get()];
_interactivePinchDismissGestureRecognizer = adoptNS([[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(_interactivePinchDismissChanged:)]);
[_interactivePinchDismissGestureRecognizer setDelegate:self];
[_interactivePinchDismissGestureRecognizer setCancelsTouchesInView:NO];
[_fullscreenViewController.get().view addGestureRecognizer:_interactivePinchDismissGestureRecognizer.get()];
#endif // ENABLE(FULLSCREEN_DISMISSAL_GESTURES)
manager->saveScrollPosition();
page->setSuppressVisibilityUpdates(true);
_viewState.store(webView.get());
_webViewPlaceholder = adoptNS([[WKFullScreenPlaceholderView alloc] init]);
[_webViewPlaceholder setParent:self];
[[_webViewPlaceholder layer] setName:@"Fullscreen Placeholder View"];
WKSnapshotConfiguration* config = nil;
[webView takeSnapshotWithConfiguration:config completionHandler:^(UIImage * snapshotImage, NSError * error) {
RetainPtr<WKWebView> webView = self._webView;
auto page = [self._webView _page];
if (!page)
return;
[CATransaction begin];
[CATransaction setDisableActions:YES];
[[_webViewPlaceholder layer] setContents:(id)[snapshotImage CGImage]];
WebKit::replaceViewWithView(webView.get(), _webViewPlaceholder.get());
[webView setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
[webView setFrame:[_window bounds]];
[webView _overrideLayoutParametersWithMinimumLayoutSize:[_window bounds].size maximumUnobscuredSizeOverride:[_window bounds].size];
[_window insertSubview:webView.get() atIndex:0];
[webView setNeedsLayout];
[webView layoutIfNeeded];
if (auto* manager = self._manager)
manager->setAnimatingFullScreen(true);
WebCore::ViewportArguments arguments { WebCore::ViewportArguments::CSSDeviceAdaptation };
arguments.zoom = 1;
arguments.minZoom = 1;
arguments.maxZoom = 1;
arguments.userZoom = 1;
page->setOverrideViewportArguments(arguments);
page->forceRepaint([protectedSelf = retainPtr(self), self] {
if (_exitRequested) {
_exitRequested = NO;
[self _exitFullscreenImmediately];
return;
}
if (auto* manager = [protectedSelf _manager]) {
manager->willEnterFullScreen();
return;
}
ASSERT_NOT_REACHED();
[self _exitFullscreenImmediately];
});
[CATransaction commit];
}];
}
- (void)beganEnterFullScreenWithInitialFrame:(CGRect)initialFrame finalFrame:(CGRect)finalFrame
{
if (_fullScreenState != WebKit::WaitingToEnterFullScreen)
return;
_fullScreenState = WebKit::EnteringFullScreen;
_initialFrame = initialFrame;
_finalFrame = finalFrame;
_initialFrame.size = WebKit::sizeExpandedToSize(_initialFrame.size, CGSizeMake(1, 1));
_finalFrame.size = WebKit::sizeExpandedToSize(_finalFrame.size, CGSizeMake(1, 1));
_initialFrame = WebKit::safeInlineRect(_initialFrame, [_rootViewController view].frame.size);
[CATransaction begin];
[CATransaction setDisableActions:YES];
RetainPtr<WKWebView> webView = self._webView;
[webView removeFromSuperview];
[_window setWindowLevel:UIWindowLevelNormal];
[_window makeKeyAndVisible];
[_fullscreenViewController setPrefersStatusBarHidden:NO];
[_fullscreenViewController showUI];
[CATransaction commit];
// NOTE: In this state, there is already a AVKit fullscreen presentation; we want to
// animate into position under the AVKit fullscreen, then after that presentation
// completes, exit AVKit fullscreen.
BOOL shouldAnimateEnterFullscreenTransition = !_returnToFullscreenFromPictureInPicture;
[_rootViewController presentViewController:_fullscreenViewController.get() animated:shouldAnimateEnterFullscreenTransition completion:^{
_fullScreenState = WebKit::InFullScreen;
if (_exitRequested) {
_exitRequested = NO;
[self _exitFullscreenImmediately];
return;
}
WebKit::WKWebViewState().applyTo(webView.get());
auto page = [self._webView _page];
auto* manager = self._manager;
#if ENABLE(FULLSCREEN_WINDOW_EFFECTS)
[_lastKnownParentWindow setAlpha:0];
#endif
if (page && manager) {
[self._webView becomeFirstResponder];
manager->didEnterFullScreen();
manager->setAnimatingFullScreen(false);
page->setSuppressVisibilityUpdates(false);
#if HAVE(UIKIT_WEBKIT_INTERNALS)
configureViewForEnteringFullscreen(_fullscreenViewController.get().view, kAnimationDuration, [_window frame].size);
#endif
if (auto* videoFullscreenManager = self._videoFullscreenManager) {
if (!_pipObserver) {
_pipObserver = WTF::makeUnique<WebKit::VideoFullscreenManagerProxy::VideoInPictureInPictureDidChangeObserver>([self] (bool inPiP) {
if (inPiP)
[self didEnterPictureInPicture];
else
[self didExitPictureInPicture];
});
videoFullscreenManager->addVideoInPictureInPictureDidChangeObserver(*_pipObserver);
}
if (auto* videoFullscreenInterface = videoFullscreenManager ? videoFullscreenManager->controlsManagerInterface() : nullptr) {
if (_returnToFullscreenFromPictureInPicture)
videoFullscreenInterface->preparedToReturnToStandby();
else if (videoFullscreenInterface->inPictureInPicture()) {
if (auto* model = videoFullscreenInterface->videoFullscreenModel()) {
_enterFullscreenNeedsExitPictureInPicture = YES;
model->requestFullscreenMode(WebCore::HTMLMediaElementEnums::VideoFullscreenModeNone);
}
}
}
}
_returnToFullscreenFromPictureInPicture = NO;
return;
}
ASSERT_NOT_REACHED();
[self _exitFullscreenImmediately];
}];
}
- (void)requestEnterFullScreen
{
if (_fullScreenState != WebKit::NotInFullScreen)
return;
// Switch the active tab if needed
if (auto* page = [self._webView _page].get())
page->fullscreenMayReturnToInline();
if (auto* manager = self._manager) {
manager->requestEnterFullScreen();
return;
}
ASSERT_NOT_REACHED();
}
- (void)requestExitFullScreen
{
if (_fullScreenState != WebKit::InFullScreen) {
_exitRequested = YES;
return;
}
#if ENABLE(FULLSCREEN_WINDOW_EFFECTS)
[self _restoreWindowTransparency];
#endif
if (auto* manager = self._manager) {
manager->requestExitFullScreen();
_exitingFullScreen = YES;
return;
}
ASSERT_NOT_REACHED();
[self _exitFullscreenImmediately];
}
#if ENABLE(FULLSCREEN_WINDOW_EFFECTS)
- (void)_restoreWindowTransparency
{
[_lastKnownParentWindow setAlpha:1];
_lastKnownParentWindow = nullptr;
}
#endif // ENABLE(FULLSCREEN_WINDOW_EFFECTS)
- (void)exitFullScreen
{
if (_fullScreenState == WebKit::NotInFullScreen)
return;
if (_fullScreenState < WebKit::InFullScreen) {
_exitRequested = YES;
return;
}
_fullScreenState = WebKit::WaitingToExitFullScreen;
_exitingFullScreen = YES;
#if ENABLE(FULLSCREEN_WINDOW_EFFECTS)
[self _restoreWindowTransparency];
#endif
if (auto* manager = self._manager) {
manager->setAnimatingFullScreen(true);
manager->willExitFullScreen();
return;
}
ASSERT_NOT_REACHED();
[self _exitFullscreenImmediately];
}
- (void)beganExitFullScreenWithInitialFrame:(CGRect)initialFrame finalFrame:(CGRect)finalFrame
{
if (_fullScreenState != WebKit::WaitingToExitFullScreen)
return;
_fullScreenState = WebKit::ExitingFullScreen;
_initialFrame = initialFrame;
_finalFrame = finalFrame;
_initialFrame.size = WebKit::sizeExpandedToSize(_initialFrame.size, CGSizeMake(1, 1));
_finalFrame.size = WebKit::sizeExpandedToSize(_finalFrame.size, CGSizeMake(1, 1));
_finalFrame = WebKit::safeInlineRect(_finalFrame, [_rootViewController view].frame.size);
if (auto page = [self._webView _page])
page->setSuppressVisibilityUpdates(true);
CompletionHandler<void()> completionHandler = [strongSelf = retainPtr(self), self] () mutable {
[_fullscreenViewController setPrefersStatusBarHidden:NO];
#if ENABLE(FULLSCREEN_DISMISSAL_GESTURES)
if (_interactiveDismissTransitionCoordinator) {
[_interactiveDismissTransitionCoordinator finishInteractiveTransition];
_interactiveDismissTransitionCoordinator = nil;
return;
}
#endif
[self _dismissFullscreenViewController];
};
#if HAVE(UIKIT_WEBKIT_INTERNALS)
configureViewForExitingFullscreen(_fullscreenViewController.get().view, kAnimationDuration, _originalWindowSize, WTFMove(completionHandler));
#else
completionHandler();
#endif
}
- (void)_reinsertWebViewUnderPlaceholder
{
[CATransaction begin];
[CATransaction setDisableActions:YES];
RetainPtr<WKWebView> webView = self._webView;
[[_webViewPlaceholder superview] insertSubview:webView.get() belowSubview:_webViewPlaceholder.get()];
[webView setFrame:[_webViewPlaceholder frame]];
[webView setAutoresizingMask:[_webViewPlaceholder autoresizingMask]];
[[webView window] makeKeyAndVisible];
[webView becomeFirstResponder];
_viewState.applyTo(webView.get());
if (auto page = [webView _page])
page->setOverrideViewportArguments(std::nullopt);
[webView setNeedsLayout];
[webView layoutIfNeeded];
[CATransaction commit];
}
- (void)_completedExitFullScreen
{
if (_fullScreenState != WebKit::ExitingFullScreen)
return;
_fullScreenState = WebKit::NotInFullScreen;
[self _reinsertWebViewUnderPlaceholder];
if (auto* manager = self._manager) {
manager->restoreScrollPosition();
manager->setAnimatingFullScreen(false);
manager->didExitFullScreen();
}
auto* videoFullscreenInterface = self._videoFullscreenManager ? self._videoFullscreenManager->controlsManagerInterface() : nullptr;
_shouldReturnToFullscreenFromPictureInPicture = videoFullscreenInterface && videoFullscreenInterface->inPictureInPicture();
[_window setHidden:YES];
_window = nil;
CompletionHandler<void()> completionHandler([protectedSelf = retainPtr(self), self] {
_webViewPlaceholder.get().parent = nil;
[_webViewPlaceholder removeFromSuperview];
if (auto page = [self._webView _page]) {
page->setSuppressVisibilityUpdates(false);
page->setNeedsDOMWindowResizeEvent();
}
_exitRequested = NO;
_exitingFullScreen = NO;
if (_enterRequested) {
_enterRequested = NO;
[self requestEnterFullScreen];
}
});
auto* page = [self._webView _page].get();
if (page && page->isViewFocused())
page->forceRepaint(WTFMove(completionHandler));
else
completionHandler();
[_fullscreenViewController setPrefersStatusBarHidden:YES];
[_fullscreenViewController invalidate];
_fullscreenViewController = nil;
}
- (void)close
{
[self _exitFullscreenImmediately];
self._webView = nil;
}
- (void)webViewDidRemoveFromSuperviewWhileInFullscreen
{
if (_fullScreenState == WebKit::InFullScreen && self._webView.window != _window.get())
[self _exitFullscreenImmediately];
}
- (void)videoControlsManagerDidChange
{
if (_fullscreenViewController)
[_fullscreenViewController videoControlsManagerDidChange];
}
- (void)placeholderWillMoveToSuperview:(UIView *)superview
{
if (superview)
return;
RunLoop::main().dispatch([self, strongSelf = retainPtr(self)] {
if ([_webViewPlaceholder superview] == nil && [_webViewPlaceholder parent] == self)
[self close];
});
}
- (void)didEnterPictureInPicture
{
_shouldReturnToFullscreenFromPictureInPicture = !_blocksReturnToFullscreenFromPictureInPicture;
if (_fullScreenState == WebKit::InFullScreen)
[self requestExitFullScreen];
}
- (void)didExitPictureInPicture
{
if (!_enterFullscreenNeedsExitPictureInPicture && _shouldReturnToFullscreenFromPictureInPicture) {
auto* videoFullscreenInterface = self._videoFullscreenManager ? self._videoFullscreenManager->controlsManagerInterface() : nullptr;
if (videoFullscreenInterface && videoFullscreenInterface->returningToStandby()) {
if (!_exitingFullScreen) {
if (_fullScreenState == WebKit::InFullScreen)
videoFullscreenInterface->preparedToReturnToStandby();
else
[self requestEnterFullScreen];
} else
_enterRequested = YES;
_returnToFullscreenFromPictureInPicture = YES;
return;
}
}
_enterFullscreenNeedsExitPictureInPicture = NO;
}
#pragma mark -
#pragma mark UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;