Fix microsoft#172604. GetWidth can be fast for long line onced rendered. (microsoft#172647)

rebornix · web-flow · commit b229eb5fa2ec · 2023-01-27T13:53:24.000-08:00
diff --git a/src/vs/editor/browser/viewParts/lines/viewLine.ts b/src/vs/editor/browser/viewParts/lines/viewLine.ts
@@ -443,7 +443,7 @@ class FastRenderedViewLine implements IRenderedViewLine {
 	}
 
 	public getWidthIsFast(): boolean {
-		return (this.input.lineContent.length < Constants.MaxMonospaceDistance);
+		return (this.input.lineContent.length < Constants.MaxMonospaceDistance) || this._cachedWidth !== -1;
 	}
 
 	public monospaceAssumptionsAreValid(): boolean {

Original file line number	Diff line number	Diff line change
`@@ -443,7 +443,7 @@ class FastRenderedViewLine implements IRenderedViewLine {`
`443`	`443`	`}`
`444`	`444`
`445`	`445`	`public getWidthIsFast(): boolean {`
`446`		`- return (this.input.lineContent.length < Constants.MaxMonospaceDistance);`
	`446`	`+ return (this.input.lineContent.length < Constants.MaxMonospaceDistance) \|\| this._cachedWidth !== -1;`
`447`	`447`	`}`
`448`	`448`
`449`	`449`	`public monospaceAssumptionsAreValid(): boolean {`