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fix: box-shadow issues with border-radius

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This commit is contained in:
Niklas von Hertzen 2021-07-15 18:55:04 +08:00
parent 578bb771bf
commit a7f5c99baa
1 changed files with 9 additions and 5 deletions
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14
src/render/canvas/canvas-renderer.ts
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@ -526,11 +526,14 @@ export class CanvasRenderer {
mask(paths: Path[]): void {
this.ctx.beginPath();
this.ctx.save();
this.ctx.setTransform(1, 0, 0, 1, 0, 0);
this.ctx.moveTo(0, 0);
this.ctx.lineTo(this.canvas.width, 0);
this.ctx.lineTo(this.canvas.width, this.canvas.height);
this.ctx.lineTo(0, this.canvas.height);
this.ctx.lineTo(0, 0);
this.ctx.restore();
this.formatPath(paths.slice(0).reverse());
this.ctx.closePath();
}
@ -723,18 +726,19 @@ export class CanvasRenderer {
await this.renderBackgroundImage(paint.container);
this.ctx.restore();
const borderBoxArea = calculateBorderBoxPath(paint.curves);
styles.boxShadow
.slice(0)
.reverse()
.forEach((shadow) => {
this.ctx.save();
const borderBoxArea = calculateBorderBoxPath(paint.curves);
const maskOffset = shadow.inset ? 0 : MASK_OFFSET;
const shadowDirection = shadow.inset ? 1 : -1;
const shadowPaintingArea = transformPath(
borderBoxArea,
-maskOffset + (shadow.inset ? 1 : -1) * shadow.spread.number,
(shadow.inset ? 1 : -1) * shadow.spread.number,
shadow.offsetX.number - maskOffset + shadowDirection * shadow.spread.number,
shadow.offsetY.number + shadowDirection * shadow.spread.number,
shadow.spread.number * (shadow.inset ? -2 : 2),
shadow.spread.number * (shadow.inset ? -2 : 2)
);
@ -749,8 +753,8 @@ export class CanvasRenderer {
this.path(shadowPaintingArea);
}
this.ctx.shadowOffsetX = shadow.offsetX.number + maskOffset;
this.ctx.shadowOffsetY = shadow.offsetY.number;
this.ctx.shadowOffsetX = maskOffset;
this.ctx.shadowOffsetY = 0;
this.ctx.shadowColor = asString(shadow.color);
this.ctx.shadowBlur = shadow.blur.number;
this.ctx.fillStyle = shadow.inset ? asString(shadow.color) : 'rgba(0,0,0,1)';