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Don't overwrite the global alpha when switching to smask mode

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It fixes #issue16287.
This commit is contained in:
Calixte Denizet 2025-03-24 21:35:07 +01:00
parent b57da32d70
commit 1d0227af62
2 changed files with 4 additions and 11 deletions
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12
src/display/canvas.js
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@ -1323,8 +1323,7 @@ class CanvasGraphics {
this.current.strokeAlpha = value;
break;
case "ca":
this.current.fillAlpha = value;
this.ctx.globalAlpha = value;
this.ctx.globalAlpha = this.current.fillAlpha = value;
break;
case "BM":
this.ctx.globalCompositeOperation = value;
@ -1378,17 +1377,12 @@ class CanvasGraphics {
drawnHeight
);
this.suspendedCtx = this.ctx;
this.ctx = scratchCanvas.context;
const ctx = this.ctx;
const ctx = (this.ctx = scratchCanvas.context);
ctx.setTransform(this.suspendedCtx.getTransform());
copyCtxState(this.suspendedCtx, ctx);
mirrorContextOperations(ctx, this.suspendedCtx);
this.setGState([
["BM", "source-over"],
["ca", 1],
["CA", 1],
]);
this.setGState([["BM", "source-over"]]);
}
endSMaskMode() {