yarneo

.my-button { @include mdc-button-shape-radius(4px); }

yarneo

MDCButton *button = [[MDCButton alloc] init];
MDCRectangleShapeGenerator *rectShape = [[MDCRectangleShapeGenerator alloc] init];
[rectShape setCorners:[MDCCutCornerTreatment alloc] initWithCut:4]]];
button.shapeGenerator = rectShape;

yarneo

FlatButton(
  shape: BeveledRectangleBorder(
    // Despite referencing circles and radii, this means "make all corners 4.0".
    borderRadius: BorderRadius.all(Radius.circular(4.0)),
  ),

yarneo

button.background as? MaterialShapeDrawable?.let {
    it.shapeAppearanceModel.apply {
        cornerFamily = CutCornerTreatment(cornerSize)
    }
}

yarneo

<com.google.android.material.button.MaterialButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:shapeAppearanceOverlay="@style/MyShapeAppearanceOverlay"/>

<style name="MyShapeAppearanceOverlay">
    <item name="cornerFamily">cut</item>
    <item name="cornerSize">4dp</item>
<style>

yarneo

- (void)updateInkForShape {
  CGRect boundingBox = CGPathGetBoundingBox(self.layer.shapeLayer.path);
  self.inkView.maxRippleRadius =
      (CGFloat)(MDCHypot(CGRectGetHeight(boundingBox), CGRectGetWidth(boundingBox)) / 2 + 10.f);
  self.inkView.layer.masksToBounds = NO;
}

yarneo

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
  if (self.layer.shapeGenerator) {
    if (CGPathContainsPoint(self.layer.shapeLayer.path, nil, point, true)) {
      return self;
    } else {
      return nil;
    }
  }
  return [super hitTest:point withEvent:event];
}

yarneo

- (MDCPathGenerator *)pathGeneratorForCornerWithAngle:(CGFloat)angle 
                                            andRadius:(CGFloat)radius {
  MDCPathGenerator *path =
      [MDCPathGenerator pathGeneratorWithStartPoint:CGPointMake(0, radius)];
  [path addArcWithTangentPoint:CGPointZero
                       toPoint:CGPointMake(MDCSin(angle) * radius, MDCCos(angle) * radius)
                        radius:radius];
  return path;
}

yarneo

- (MDCPathGenerator *)pathGeneratorForCornerWithAngle:(CGFloat)angle
                                               andCut:(CGFloat)cut {
  MDCPathGenerator *path =
      [MDCPathGenerator pathGeneratorWithStartPoint:CGPointMake(0, cut)];
  [path addLineToPoint:CGPointMake(MDCSin(angle) * cut, MDCCos(angle) * cut)];
  return path;
}

yarneo

/**
 An MDCShapeGenerating for creating shaped rectangular CGPaths.

 By default MDCRectangleShapeGenerator creates rectangular CGPaths.
 Set the corner and edge treatments to shape parts of the generated path.
 */
@interface MDCRectangleShapeGenerator : NSObject <MDCShapeGenerating>

/**
 The corner treatments to apply to each corner.