I'm trying to put shadow and corner radius to a tableView. The cornerRadius works fine but the shadowOffset doesn't work:
CGRect shadowFrame = self.mainTableView.layer.bounds;
CGPathRef shadowPath = [UIBezierPath bezierPathWithRect:shadowFrame].CGPath;
self.mainTableView.layer.shadowPath = shadowPath;
self.mainTableView.layer.shadowColor = [UIColor blackColor].CGColor;
self.mainTableView.layer.shadowOffset = CGSizeMake(0, 1);
self.mainTableView.layer.shadowOpacity = 4.0;
self.mainTableView.layer.shadowRadius = 7.0;
Any idea?
Have you tried that ?
self.mainTableView.layer.masksToBounds = NO;
Basically for this to be achieved you need to use two views.
See this link: Why masksToBounds = YES prevents CALayer shadow?
Related
I am trying to create glow just around the sides of the rectangle. The rest of the rectangle should be filled clear color. I create a UIView with CGRect of certain size and then -
self.backgroundColor = [UIColor clearColor];
self.layer.borderWidth = 2.0f;
self.layer.borderColor = [UIColor colorWithRed:203/255.0 green:1.0 blue:252/255.0 alpha:1.0f].CGColor;
self.layer.cornerRadius = 5.0f;
int glowSpread = 2;
CGRect glowRect = CGRectMake(self.bounds.origin.x-glowSpread, self.bounds.origin.y-glowSpread, self.bounds.size.width+2*glowSpread, self.bounds.size.height+2*glowSpread);
self.layer.shadowPath = [UIBezierPath bezierPathWithRoundedRect:glowRect cornerRadius:5.0].CGPath;
self.layer.shadowColor = [UIColor colorWithRed:203/255.0 green:1.0 blue:252/255.0 alpha:1.0f].CGColor;
self.layer.shadowOffset = CGSizeMake(0, 0);
self.layer.shadowOpacity = 0.5;
self.layer.shadowRadius = 2.0f;
With the above approach, I get the glow around the side but the whole CGRect gets filled with the shadow color, which I do not want. Any suggestion?
make a more complicated shadow path that isn't enclosed, or just add a sublayer of the color you want.
I want to apply two types of border on a UIImageView:
One is the border on the layer of the UIImageView.
Second is the border around the layer of the UIImageView.
How can I do this?
Try
#define kBorderWidth 3.0
#define kCornerRadius 8.0
CALayer *borderLayer = [CALayer layer];
CGRect borderFrame = CGRectMake(0, 0, (imageView.frame.size.width), (imageView.frame.size.height));
[borderLayer setBackgroundColor:[[UIColor clearColor] CGColor]];
[borderLayer setFrame:borderFrame];
[borderLayer setCornerRadius:kCornerRadius];
[borderLayer setBorderWidth:kBorderWidth];
[borderLayer setBorderColor:[[UIColor redColor] CGColor]];
[imageView.layer addSublayer:borderLayer];
And don't forget to import QuartzCore/QuartzCore.h
This example will draw a boarder on the layer, but change it's frame slightly to make the border around the layer.
Another way
You must import
#import <QuartzCore/QuartzCore.h>
Then add code for your UIImageView
imgView.clipsToBounds = YES;
imgView.layer.cornerRadius = 8.0;
imgView.layer.borderWidth = 2.0;
imgView.layer.borderColor = [UIColor greenColor].CGColor;
An other way is to add another layer that goes a bit outside of the UIImageView's layer like so :
CALayer * externalBorder = [CALayer layer];
externalBorder.frame = CGRectMake(-1, -1, myView.frame.size.width+2, myView.frame.size.height+2);
externalBorder.borderColor = [UIColor blackColor].CGColor;
externalBorder.borderWidth = 1.0;
[myView.layer addSublayer:externalBorder];
myView.layer.masksToBounds = NO;
Swift 5
Beware when using a UIImageView; masksToBounds = false means the image will spill over
let outsideBorder = CALayer()
outsideBorder.frame = CGRect(x: -1, y: -1, width: myView.frame.size.width+2, height: myView.frame.size.height+2)
outsideBorder.borderColor = UIColor.black.cgColor
outsideBorder.borderWidth = 1.0
myView.layer.addSublayer(outsideBorder)
myView.masksToBounds = false
something exactly like above?
I know how to produce a rounded corner:
imageView.layer.cornerRadius = 10;
imageView.layer.shouldRasterize = YES;
imageView.layer.masksToBounds = YES;
For the shadow, I have tried
imageView.layer.shadowOffset = CGSizeMake(1, 1);
imageView.layer.shadowRadius = 5;
imageView.layer.shadowOpacity = 0.4;
imageView.layer.shadowColor = [UIColor blackColor].CGColor;
imageView.layer.shouldRasterize = YES;
But imageView.layer.masksToBounds = YES; from rounded corner kills the shadow.
Another question is that how to produce a shadow exactly like shown in the image? I produced this image in photoshop, I used 120 degree as the direction of the light. But if I used the code above, and turn off maskToBounds, I can see the shadow and it is ugly.
Or can I produce a rounded corner+shadow image frame in photoshop and apply the frame to every image in my app? I think that will give better performance. shadowing and cornering the images on the fly will have terrible performance if all images are on a scroll.
Thanks
Try this :
CALayer *sublayer = [CALayer layer];
sublayer.backgroundColor = [UIColor blueColor].CGColor;
sublayer.shadowOffset = CGSizeMake(0, 3);
sublayer.shadowRadius = 5.0;
sublayer.shadowColor = [UIColor blackColor].CGColor;
sublayer.shadowOpacity = 0.8;
sublayer.frame = CGRectMake(30, 30, 128, 192);
sublayer.borderColor = [UIColor blackColor].CGColor;
sublayer.borderWidth = 2.0;
sublayer.cornerRadius = 10.0;
[self.view.layer addSublayer:sublayer];
CALayer *imageLayer = [CALayer layer];
imageLayer.frame = sublayer.bounds;
imageLayer.cornerRadius = 10.0;
imageLayer.contents = (id) [UIImage imageNamed:#"BattleMapSplashScreen.jpg"].CGImage;
imageLayer.masksToBounds = YES;
[sublayer addSublayer:imageLayer];
And take look at the original source
I would use two image views. A background png that has the shadow (can be re-used for every image) and the foreground png image which has rounded corners.
You probably want to use a different layer for shadowing, and keep your masksToBounds and rounding code. In this example imageView is the name the image view that you want to shadow and round:
CALayer *shadowLayer = [[[CALayer alloc] init] autorelease];
sublayer.frame = imageView.bounds;
sublayer.masksToBounds = NO;
sublayer.shadowOffset = CGSizeMake(1, 1);
sublayer.shadowRadius = 5;
sublayer.shadowOpacity = 0.4;
sublayer.shadowColor = [UIColor blackColor].CGColor;
sublayer.shouldRasterize = YES;
[imageView.layer insertSublayer:shadowLayer atIndex:0]; // Put it underneath the image
That should give you the shadow. Now to avoid the slow recalculating, I suggest creating a UIImage out of the image. See this link: Create UIImage from shadowed view while retaining alpha?.
Hope this helps!
I have a subclassed UIView loaded from a nib, and I cannot get a shadow to draw around it. I'm trying to get a shadow to appear around the entire view for quite some time now. I elected to place it in it's own sublayer to simplify animating it later. Here's the code:
-(void)awakeFromNib
{
self.clipsToBounds = NO;
// set up the shadow layer
CALayer *shadow = [CALayer layer];
shadow.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, self.bounds.size.width, self.bounds.size.height);
shadow.shadowColor = [UIColor blueColor].CGColor;
shadow.shadowRadius = 15.0;
shadow.opacity = 1.0;
[self.layer addSublayer:shadow];
// I set this property so I have access to it later to more easily animate it.
self.shadowLayer = shadow;
}
When I NSLog the shadowLayer property, the coordinates and frame are correct. It's matches the view it's backing.
I also set a border color and corner radius on self.layer and it appears correctly. If I put the shadow on self.layer it appears but it encompasses all the subviews of my parent UIView.
Any help is greatly appreciated.
Am assuming you have QuartzCore imported. I think you need to set & create a border to the UIView. The way to use this [self roundedLayerWithShadow:yourView.layer radius:5.0f];
- (void)roundedLayerWithShadow:(CALayer *)viewLayer
radius:(float)r
{
[viewLayer setMasksToBounds:YES];
[viewLayer setCornerRadius:r];
[viewLayer setBorderColor:[RGB(180, 180, 180) CGColor]];
[viewLayer setBorderWidth:1.0f];
[viewLayer setShadowColor:[RGB(0, 0, 0) CGColor]];
[viewLayer setShadowOffset:CGSizeMake(0, 0)];
[viewLayer setShadowOpacity:1];
[viewLayer setShadowRadius:2.0];
return;
}
I struggled with the same, and it turns out you need to set shadowOpacity to 1.0. In your code you accidentally use opacity instead of shadowOpacity. That's the same issue I had.
In general, for the shadow to appear:
the shadowOpacity should be larger than 0
the shadowRadius should be larger than 0
the masksToBounds should be set to false (to avoid the clipping of the shadow)
the shadowColor should be different than the background color of the view's superview
Swift 4.2. example implementation:
let myCustomView = MyCustomView()
myCustomView.layer.shadowColor = UIColor.black.cgColor
myCustomView.layer.shadowOpacity = 0.15
myCustomView.layer.shadowRadius = 5
myCustomView.layer.masksToBounds = false
myCustomView.layer.shadowOffset = CGSize(width: 0, height: 2)
Aside from borderRadius, your shadow layer looks very much transparent. Therefore it will not drop any shadow on shadow.superlayer.
Due to UIProgressHUD need to access private api,
so I hope to construct an UIView with round corner and white border.
I know to make the corner round is:
view.layer.cornerRadius = 5;
But how to make the uiview has round corner and white border at the same time?
Welcome any comment
Thanks
interdev
Using the same layer object:
view.layer.borderWidth = 1;
view.layer.borderColor = [[UIColor whiteColor] CGColor];
Sometimes corner radius with white border does not work properly so I use UIBezierPath and CAShapeLayer.
For make the corner radius
UIBezierPath *maskPath;
maskPath = [UIBezierPath bezierPathWithRoundedRect:self.imageView.bounds byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerTopRight | UIRectCornerBottomLeft | UIRectCornerBottomRight) cornerRadii:CGSizeMake(10.0, 10.0)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = self.view.bounds;
maskLayer.path = maskPath.CGPath;
self.imageView.layer.mask = maskLayer;
For make the border white
CAShapeLayer* borderShape = [CAShapeLayer layer];
borderShape.frame = self.imageView.bounds;
borderShape.path = maskPath.CGPath;
borderShape.strokeColor = [UIColor whiteColor].CGColor;
borderShape.fillColor = nil;
borderShape.lineWidth = 3;
[self.imageView.layer addSublayer:borderShape];
It will work. Hope this help
There are border properties in the layer of the view as well: eg:
view.layer.borderWidth = 1;
view.layer.borderColor = [UIColor redColor].CGColor;
view.layer.cornerRadius = 5;
view.clipsToBounds = YES;
view.layer.borderWidth = 1;
view.layer.borderColor = [UIColor whiteColor].CGColor;
code to get rounded corners and border
#import <QuartzCore/QuartzCore.h>
view.layer.cornerRadius = 10;
view.layer.borderWidth = 1;
view.layer.borderColor = [[UIColor whiteColor] CGColor];
[view.layer setBorderWidth:2];
[view.layer setBorderColor:[[UIColor whiteColor]CGColor]];