I am trying to set top left and top right corners to tab bar along with shadow.
I am using below function which is in my UIView extension:
func addShadowWithCurve(usingCorners corners : UIRectCorner,cornerRadii : CGSize, shadowColor:UIColor,shadowOpacity:Float,shadowRadius:CGFloat,shadowOffset:CGSize){
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: cornerRadii)
layer.masksToBounds = false
let frameLayer = CAShapeLayer()
frameLayer.path = path.cgPath
frameLayer.shadowPath = path.cgPath
frameLayer.lineWidth = 1
frameLayer.strokeColor = RRSTokens.colorGrey10.cgColor
frameLayer.fillColor = backgroundColor?.cgColor
frameLayer.shadowOffset = shadowOffset
frameLayer.shadowOpacity = shadowOpacity
frameLayer.shadowRadius = shadowRadius
frameLayer.shadowColor = shadowColor.cgColor
layer.mask = frameLayer
layer.insertSublayer(frameLayer, at: 0)
}
But the result is not expected, there is a black border line visible at the top of tab bar. I have tried multiple attempts to play around layer properties to remove that black line but no luck. This is what it looks like:
Your code is perfect just add below line to your code:
self.tabBar.barStyle = .blackOpaque
Hope it'll solve your problem. Thank you.
Related
I'm trying to achieve a feature that allows adding a shadow to a transparent button. For this, I'm creating a layer that masks the shadows inside the view. However, my shadows are clipped on the left and upper sides but not clipped on the right and lower sides.
Here is how it looks (This is not a transparent button but they're also working fine except the shadow being clipped like this.):
And here is my code for achieving this:
private func applyShadow() {
layer.masksToBounds = false
if shouldApplyShadow && shadowLayer == nil {
shadowLayer = CAShapeLayer()
let shapePath = CGPath(roundedRect: bounds, cornerWidth: cornerRadi, cornerHeight: cornerRadi, transform: nil)
shadowLayer.path = shapePath
shadowLayer.fillColor = backgroundColor?.cgColor
shadowLayer.shadowPath = shadowLayer.path
shadowLayer.shadowRadius = shadowRadius ?? 8
shadowLayer.shadowColor = (shadowColor ?? .black).cgColor
shadowLayer.shadowOffset = shadowOffset ?? CGSize(width: 0, height: 0)
shadowLayer.shadowOpacity = shadowOpacity ?? 0.8
layer.insertSublayer(shadowLayer!, at: 0)
/// If there's background color, there is no need to mask inner shadows.
if backgroundColor != .none && !(innerShadows ?? false) {
let maskLayer = CAShapeLayer()
maskLayer.path = { () -> UIBezierPath in
let path = UIBezierPath()
path.append(UIBezierPath(cgPath: shapePath))
path.append(UIBezierPath(rect: UIScreen.main.bounds))
path.usesEvenOddFillRule = true
return path
}().cgPath
maskLayer.fillRule = .evenOdd
shadowLayer.mask = maskLayer
}
}
}
I think that's something related to the Even-Odd Fill Rule algorithm, I'm not sure. But how can I overcome this clipping problem?
Thanks in advance.
EDIT:
This is what a transparent button with borders and text on it looks when shadow applied.. Which I don't want.
What it should look like this. No shadows inside but also a clear background color. (Except the clipped top and left sides):
I think a couple issues...
You are appending UIBezierPath(rect: UIScreen.main.bounds) to your path, but that puts the top-left corner at the top-left corner of the layer... which "clips" the top-left shadow.
If you DO have a background color, you'll need to clip those corners as well, or they will "bleed" outside the rounded corners.
Give this a try (only slightly modified). It's designated #IBDesignable so you can see how it looks in Storyboard / Interface Builder (I did not set any of the properties to inspectable -- I'll leave that up to you if you want to do so):
#IBDesignable
class MyRSButton: UIButton {
var shouldApplyShadow: Bool = true
var innerShadows: Bool?
var cornerRadi: CGFloat = 8.0
var shadowLayer: CAShapeLayer!
var shadowRadius: CGFloat?
var shadowColor: UIColor?
var shadowOffset: CGSize?
var shadowOpacity: Float?
override func layoutSubviews() {
super.layoutSubviews()
applyShadow()
}
private func applyShadow() {
// needed to prevent background color from bleeding past
// the rounded corners
cornerRadi = bounds.size.height * 0.5
layer.cornerRadius = cornerRadi
layer.masksToBounds = false
if shouldApplyShadow && shadowLayer == nil {
shadowLayer = CAShapeLayer()
let shapePath = CGPath(roundedRect: bounds, cornerWidth: cornerRadi, cornerHeight: cornerRadi, transform: nil)
shadowLayer.path = shapePath
shadowLayer.fillColor = backgroundColor?.cgColor
shadowLayer.shadowPath = shadowLayer.path
shadowLayer.shadowRadius = shadowRadius ?? 8
shadowLayer.shadowColor = (shadowColor ?? .black).cgColor
shadowLayer.shadowOffset = shadowOffset ?? CGSize(width: 0, height: 0)
shadowLayer.shadowOpacity = shadowOpacity ?? 0.8
layer.insertSublayer(shadowLayer!, at: 0)
/// If there's background color, there is no need to mask inner shadows.
if backgroundColor != .none && !(innerShadows ?? false) {
let maskLayer = CAShapeLayer()
maskLayer.path = { () -> UIBezierPath in
let path = UIBezierPath()
path.append(UIBezierPath(cgPath: shapePath))
// define a rect that is 80-pts wider and taller
// than the button... this will "expand" it from center
let r = bounds.insetBy(dx: -40, dy: -40)
path.append(UIBezierPath(rect: r))
path.usesEvenOddFillRule = true
return path
}().cgPath
maskLayer.fillRule = .evenOdd
shadowLayer.mask = maskLayer
}
}
}
}
Result:
I am creating a TabBar with top left and top right corners rounded.
I'm using a layer mask to achieve this and it works fine, however I need the mask color to be white (its transparent showing the VC background color with the below code).
Is it possible to set the mask background color white with below approach?
I've tried setting layer and layer.mask background colours but with no success (I can't change the VC background color).
current code:
self.tabBar.layer.masksToBounds = true
self.tabBar.isTranslucent = true
self.tabBar.barStyle = .default
self.tabBar.layer.cornerRadius = 28
self.tabBar.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
Thanks.
If you want to set background color to layer mask, you need another layer
Is this the effect you needed?
You may try this:
extension UITabBar {
func roundCorners(corners: UIRectCorner, backgroundColor: UIColor, cornerColor: UIColor, radius: Int = 20) {
self.backgroundColor = cornerColor
let parentLayer = CALayer()
parentLayer.frame = bounds
parentLayer.backgroundColor = backgroundColor.cgColor
layer.insertSublayer(parentLayer, at: 0)
let maskPath = UIBezierPath(roundedRect: bounds,
byRoundingCorners: corners,
cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.frame = bounds
mask.path = maskPath.cgPath
parentLayer.mask = mask
}
}
i am struggling to add shadow to a custom shape.
Here is a picture of what i want to construct:
(Dont mind the text and the symbol)
You can see the custom shape with the curved corner on the right and the rectangular shape on the left with shadow.
I am using UIView, and added corner to the left.
This is the code i have so far that shape the view correct:
View1.backgroundColor = .green //green color is just to see the shape well
let path = UIBezierPath(roundedRect:View1.bounds,
byRoundingCorners:[.topRight, .bottomRight],
cornerRadii: CGSize(width: self.frame.height/2, height: self.frame.height/2))
let maskLayer = CAShapeLayer()
I Have tried to add shadow to it, but the shadow does not apear.
Here is the code i have tried to add shadow:
View1.layer.masksToBounds = false
View1.layer.layer.shadowPath = maskLayer.path
View1.layer.shadowColor = UIColor.black.cgColor
View1.layer.shadowOffset = CGSize(width: 0.0, height: 3.0)
View1.layer.shadowOpacity = 0.5
View1.layer.shadowRadius = 1.0
How can you add shadow to this shape?
You can achieve this by using a single UIView (shadowView), adding a shapeLayer sublayer and setting the shadow of the shadowView's layer.
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
setup()
}
#IBOutlet var shadowView: UIView!
func setup() {
// setup irregular shape
let path = UIBezierPath.init(roundedRect: shadowView.bounds, byRoundingCorners: [.topRight, .bottomRight], cornerRadii: CGSize.init(width: 20, height: 20))
let layer = CAShapeLayer.init()
layer.frame = shadowView.bounds
layer.path = path.cgPath
layer.fillColor = UIColor.white.cgColor
layer.masksToBounds = true
shadowView.layer.insertSublayer(layer, at: 0)
// setup shadow
shadowView.layer.shadowRadius = 8
shadowView.layer.shadowOpacity = 0.2
shadowView.layer.shadowOffset = CGSize.init(width: 0, height: 2.5)
shadowView.layer.shadowColor = UIColor.black.cgColor
shadowView.layer.shadowPath = path.cgPath
}
}
Note:
The shadowView.clipToBounds must be false for the shadows to take effect.
To see the layer.fillColor, set the shadowView.backgroundColor to .clear.
You can easily achieve the above via Interface Builder by setting the 'Background' property and unchecking the 'Clip to Bounds' checkbox.
I have the following code that is intended to round just the bottom corners of a UIImage via a layer mask. The code works fine as far as rounding the corners go, but when I do so, it is creating a strange offset and I can't figure out where it's coming from.
Here it is, without the code (Notice how it lines up on the bottom with the purple rounded rectangle sitting behind it):
And here it is with the layer mask code:
Here is the code:
//This section sets the corner radius & shadow of the purple rectangle.
totalTankRep.layer.cornerRadius = 8
totalTankRep.clipsToBounds = true
totalTankRep.layer.masksToBounds = false;
totalTankRep.layer.shadowOffset = CGSize(width: 5.0, height: 5.0);
totalTankRep.layer.shadowRadius = 8;
totalTankRep.layer.shadowOpacity = 0.25;
//This defaults the green rectangle to 0 (for the top corners)
oilLevelRep.layer.cornerRadius = 0
//This applies a layer mask that rounds the corners
let maskPath = UIBezierPath(roundedRect: oilLevelRep.bounds, byRoundingCorners: [.bottomLeft, .bottomRight], cornerRadii: CGSize(width: 8.0, height: 0.0))
let maskLayer = CAShapeLayer()
maskLayer.path = maskPath.cgPath
oilLevelRep.layer.mask = maskLayer
view.addSubview(oilLevelRep)
Any idea what's going on here, and how I can fix this?
I want to make my TopLeft and TopRight corners with corner radius. It works with this code:
let rectShape = CAShapeLayer()
rectShape.bounds = self.name.frame
rectShape.position = self.name.center
rectShape.path = UIBezierPath(roundedRect: self.name.bounds, byRoundingCorners: .TopLeft | .TopRight, cornerRadii: CGSize(width: 20, height: 20)).CGPath
rectShape.backgroundColor = UIColor.blackColor().CGColor
self.name.layer.mask = rectShape
but it makes the corners transparent, like this:
How can I make them visible?
Bcs it's just a mask, your layer still square. There are many ways to do it, for example, you can paint your own layer and add it as sublayer. This properties should help you:
layer.fillColor = LAYER_COLOR.CGColor;
layer.strokeColor = LAYER_BORDER_COLOR.CGColor;
layer.lineWidth = LAYER_BORDER_WIDTH;
layer.opacity = LAYER_OPACITY;