FlutterPathClipView Class Reference

Inheritance diagram for FlutterPathClipView:

Instance Methods
(instancetype)	- initWithFrame: [implementation]
(BOOL)	- isFlipped [implementation]
(NSView *)	- hitTest: [implementation]
(void)	- maskToPath:withOrigin: [implementation]

Detailed Description

View that clips that content to a specific CGPathRef. Clipping is done through a CAShapeLayer mask, which avoids the need to rasterize the mask.

Definition at line 142 of file FlutterMutatorView.mm.

Method Documentation

hitTest:

- (NSView *) hitTest: (NSPoint)  point

implementation

Definition at line 114 of file FlutterMutatorView.mm.

                  :(NSPoint)point {
  NSView* res = [super hitTest:point];
  return res != self ? res : nil;
}

initWithFrame:

- (instancetype) initWithFrame: (NSRect)  frameRect

implementation

Definition at line 114 of file FlutterMutatorView.mm.

                             :(NSRect)frameRect {
  if (self = [super initWithFrame:frameRect]) {
    self.wantsLayer = YES;
  }
  return self;
}

isFlipped

- (BOOL) isFlipped

implementation

Definition at line 114 of file FlutterMutatorView.mm.

                  {
  // Flutter transforms assume a coordinate system with an upper-left corner origin, with y
  // coordinate values increasing downwards. This affects the view, view transforms, and
  // sublayerTransforms.
  return YES;
}

maskToPath:withOrigin:

- (void) maskToPath: (CGPathRef)  path withOrigin: (CGPoint)  origin

implementation

Clip the view to the given path. Offset top left corner of platform view in global logical coordinates.

Definition at line 114 of file FlutterMutatorView.mm.

                  :(CGPathRef)path withOrigin:(CGPoint)origin {
  CAShapeLayer* maskLayer = self.layer.mask;
  if (maskLayer == nil) {
    maskLayer = [CAShapeLayer layer];
    self.layer.mask = maskLayer;
  }
  maskLayer.path = path;
  maskLayer.transform = CATransform3DMakeTranslation(-origin.x, -origin.y, 0);
}

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

• shell/platform/darwin/macos/framework/Source/FlutterMutatorView.mm