FlutterView Class Reference

#import <FlutterView.h>

Inheritance diagram for FlutterView:

Instance Methods
(instancetype)	- NS_UNAVAILABLE
(instancetype)	- initWithFrame:
(instancetype)	- initWithCoder:
(instancetype)	- initWithDelegate:opaque:enableWideGamut:
(UIScreen *)	- screen
(MTLPixelFormat)	- pixelFormat
(void)	- setIntrinsicContentSize:
(void)	- resetIntrinsicContentSize

Class Methods
(instancetype)	+ NS_UNAVAILABLE

Properties
BOOL	autoResizable

Detailed Description

Definition at line 49 of file FlutterView.h.

Method Documentation

initWithCoder:

- (instancetype) initWithCoder:

(NSCoder*)

NS_UNAVAILABLE

Definition at line 24 of file FlutterView.mm.

                             :(NSCoder*)aDecoder {
  NSAssert(NO, @"FlutterView must initWithDelegate");
  return nil;
}

initWithDelegate:opaque:enableWideGamut:

- (instancetype) initWithDelegate:		(id<FlutterViewEngineDelegate>)	delegate
opaque:		(BOOL)	opaque
enableWideGamut:		(BOOL)	NS_DESIGNATED_INITIALIZER

Definition at line 24 of file FlutterView.mm.

                                :(id<FlutterViewEngineDelegate>)delegate
                          opaque:(BOOL)opaque
                 enableWideGamut:(BOOL)isWideGamutEnabled {
  if (delegate == nil) {
    NSLog(@"FlutterView delegate was nil.");
    return nil;
  }
 
  self = [super initWithFrame:CGRectNull];
 
  if (self) {
    _delegate = delegate;
    _isWideGamutEnabled = isWideGamutEnabled;
    self.layer.opaque = opaque;
    _autoResizable = NO;
    _intrinsicSize = CGSizeMake(UIViewNoIntrinsicMetric, UIViewNoIntrinsicMetric);
  }
 
  return self;
}

initWithFrame:

- (instancetype) initWithFrame:

(CGRect)

NS_UNAVAILABLE

Definition at line 24 of file FlutterView.mm.

                             :(CGRect)frame {
  NSAssert(NO, @"FlutterView must initWithDelegate");
  return nil;
}

NS_UNAVAILABLE [1/2]

+ (instancetype) NS_UNAVAILABLE

NS_UNAVAILABLE [2/2]

- (instancetype) NS_UNAVAILABLE

pixelFormat

- (MTLPixelFormat) pixelFormat

Definition at line 24 of file FlutterView.mm.

                              {
  if ([self.layer isKindOfClass:[CAMetalLayer class]]) {
// It is a known Apple bug that CAMetalLayer incorrectly reports its supported
// SDKs. It is, in fact, available since iOS 8.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunguarded-availability-new"
    CAMetalLayer* layer = (CAMetalLayer*)self.layer;
    return layer.pixelFormat;
  }
  return MTLPixelFormatBGRA8Unorm;
}

resetIntrinsicContentSize

- (void) resetIntrinsicContentSize

A method that resets and recalculates the instrinsic content size Currently called when the device orientation changes.

Definition at line 24 of file FlutterView.mm.

                                  {
  _intrinsicSize = CGSizeMake(UIViewNoIntrinsicMetric, UIViewNoIntrinsicMetric);
  [self removeAutoResizeLayoutConstraints];
}

screen

- (UIScreen *) screen

Definition at line 24 of file FlutterView.mm.

                    {
  return self.window.windowScene.screen;
}

setIntrinsicContentSize:

- (void) setIntrinsicContentSize:

(CGSize)

size

A method that sets the instrinsic content size This is used when autoResizable is enabled.

Definition at line 24 of file FlutterView.mm.

                               :(CGSize)size {
  if (!self.autoResizable) {
    return;
  }
 
  UIWindow* window = self.window;
  CGFloat scale = window ? self.window.windowScene.screen.scale : self.traitCollection.displayScale;
  CGSize scaledSize = CGSizeMake(size.width / scale, size.height / scale);
 
  CGSize roundedScaleSize = CGSizeMake(roundf(scaledSize.width), roundf(scaledSize.height));
  CGSize roundedIntrinsicSize =
      CGSizeMake(roundf(_intrinsicSize.width), roundf(_intrinsicSize.height));
 
  // If the size has not changed, don't update constraints.
  if (CGSizeEqualToSize(roundedIntrinsicSize, roundedScaleSize)) {
    return;
  }
  _intrinsicSize = scaledSize;
 
  self.translatesAutoresizingMaskIntoConstraints = false;
 
  // Remove any existing FlutterAutoResizeLayoutConstraint
  [self removeAutoResizeLayoutConstraints];
 
  FlutterAutoResizeLayoutConstraint* widthConstraint =
      [FlutterAutoResizeLayoutConstraint constraintWithItem:self
                                                  attribute:NSLayoutAttributeWidth
                                                  relatedBy:NSLayoutRelationEqual
                                                     toItem:nil
                                                  attribute:NSLayoutAttributeNotAnAttribute
                                                 multiplier:1.0
                                                   constant:scaledSize.width];
 
  FlutterAutoResizeLayoutConstraint* heightConstraint =
      [FlutterAutoResizeLayoutConstraint constraintWithItem:self
                                                  attribute:NSLayoutAttributeHeight
                                                  relatedBy:NSLayoutRelationEqual
                                                     toItem:nil
                                                  attribute:NSLayoutAttributeNotAnAttribute
                                                 multiplier:1.0
                                                   constant:scaledSize.height];
 
  [NSLayoutConstraint activateConstraints:@[ widthConstraint, heightConstraint ]];
  [self setNeedsLayout];
}

Property Documentation

autoResizable

- (BOOL) autoResizable

readwritenonatomicassign

Definition at line 74 of file FlutterView.h.

---

The documentation for this class was generated from the following files:

• shell/platform/darwin/ios/framework/Source/FlutterView.h
• shell/platform/darwin/ios/framework/Source/FlutterView.mm