I saw a similar question here but I have an array
of radius instead of a number
so it couldn't use +
operator.
The radius has 4 values: [top, right, bottom, left]
<Stage width={width} height={height}>
<Layer>
<Rect
width={width / 2}
height={height / 2}
x={20}
y={20}
fill=""
cornerRadius={10}
shadowEnabled={true}
shadowColor="#bada41"
shadowBlur={50}
shadowOffset={{ x: 10, y: 10 }}
shadowOpacity={1}
shadow={10}
/>
<Rect
width={width / 2}
height={height / 2}
x={20}
y={20}
cornerRadius={cornerRadius}
fill="palevioletred"
/>
<Group
clipFunc={(ctx: any) => {
ctx.beginPath()
ctx.moveTo(x + cornerRadius[0], y)
ctx.lineTo(x + width - cornerRadius[0], y)
ctx.quadraticCurveTo(x + width, y, x + width, y + cornerRadius[0])
ctx.lineTo(x + width, y + height - cornerRadius[1])
ctx.quadraticCurveTo(
x + width,
y + height,
x + width - cornerRadius[1],
y + height
)
ctx.lineTo(x + cornerRadius[1], y + height)
ctx.quadraticCurveTo(x, y + height, x, y + height - cornerRadius[2])
ctx.lineTo(x, y + cornerRadius[2])
ctx.quadraticCurveTo(x, y, x + cornerRadius[3], y)
ctx.closePath()
}}
>
<Image
image={img}
width={width / 4}
height={height / 4}
x={40}
y={40}
fill="blue"
/>
</Group>
</Layer>
</Stage>
Codesandbox 👉 https://codesandbox.io/s/clip-rounded-image-in-react-konva-09d2l?file=/src/App.tsx
How can I make the inner image the same shape as the outer one?
export default function App() {
const [img] = useImage(
"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAMAAAC6V+0/AAAABlBMVEUAAADY2NjnFMi2AAAAAXRSTlMAQObYZgAAABVJREFUGNNjYIQDBgQY0oLDxBsIQQCltADJNa/7sQAAAABJRU5ErkJggg=="
);
const width = window.innerWidth;
const height = window.innerHeight;
const x = 20;
const y = 20;
const cornerRadius = [0, 0, 20, 20];
const imageWidth = width / 4;
const imageHeight = height / 4;
return (
<div className="App">
<h1
style={{
paddingLeft: 20
}}
>
Clip in Konva
</h1>
<Stage width={width} height={height}>
<Layer>
<Rect
width={width / 2}
height={height / 2}
x={20}
y={20}
fill=""
cornerRadius={10}
shadowEnabled={true}
shadowColor="#bada41"
shadowBlur={50}
shadowOffset={{ x: 10, y: 10 }}
shadowOpacity={1}
shadow={10}
/>
<Rect
width={width / 2}
height={height / 2}
x={20}
y={20}
cornerRadius={cornerRadius}
fill="palevioletred"
/>
<Group
x={40}
y={40}
clipFunc={(ctx: any) => {
ctx.beginPath();
let topLeft = 0;
let topRight = 0;
let bottomLeft = 0;
let bottomRight = 0;
if (typeof cornerRadius === "number") {
topLeft = topRight = bottomLeft = bottomRight = Math.min(
cornerRadius,
width / 2,
height / 2
);
} else {
topLeft = Math.min(
cornerRadius[0] || 0,
imageWidth / 2,
imageHeight / 2
);
topRight = Math.min(
cornerRadius[1] || 0,
imageWidth / 2,
imageHeight / 2
);
bottomRight = Math.min(
cornerRadius[2] || 0,
imageWidth / 2,
imageHeight / 2
);
bottomLeft = Math.min(
cornerRadius[3] || 0,
imageWidth / 2,
imageHeight / 2
);
}
ctx.moveTo(topLeft, 0);
ctx.lineTo(imageWidth - topRight, 0);
ctx.arc(
imageWidth - topRight,
topRight,
topRight,
(Math.PI * 3) / 2,
0,
false
);
ctx.lineTo(imageWidth, imageHeight - bottomRight);
ctx.arc(
imageWidth - bottomRight,
imageHeight - bottomRight,
bottomRight,
0,
Math.PI / 2,
false
);
ctx.lineTo(bottomLeft, imageHeight);
ctx.arc(
bottomLeft,
imageHeight - bottomLeft,
bottomLeft,
Math.PI / 2,
Math.PI,
false
);
ctx.lineTo(0, topLeft);
ctx.arc(
topLeft,
topLeft,
topLeft,
Math.PI,
(Math.PI * 3) / 2,
false
);
ctx.closePath();
}}
>
<Image
image={img}
width={imageWidth}
height={imageHeight}
fill="blue"
/>
</Group>
</Layer>
</Stage>
</div>
);
}
Demo: https://codesandbox.io/s/react-konva-image-clip-demo-x4i2d?file=/src/App.tsx:99-3886
Gotcha: The
x
&y
attribute onImage
should be removed & placed onGroup
component.