Remove bigNumbersDelta (#194712)

If I understand correctly, this is just a hack to support IE. However,
IE is no longer supported, so this is no longer necessary.

src/vs/editor/browser/view/renderingContext.ts

@@ -22,7 +22,6 @@ export abstract class RestrictedRenderingContext {
 	public readonly scrollHeight: number;
 
 	public readonly visibleRange: Range;
-	public readonly bigNumbersDelta: number;
 
 	public readonly scrollTop: number;
 	public readonly scrollLeft: number;
@@ -40,7 +39,6 @@ export abstract class RestrictedRenderingContext {
 		this.scrollHeight = this._viewLayout.getScrollHeight();
 
 		this.visibleRange = this.viewportData.visibleRange;
-		this.bigNumbersDelta = this.viewportData.bigNumbersDelta;
 
 		const vInfo = this._viewLayout.getCurrentViewport();
 		this.scrollTop = vInfo.top;

src/vs/editor/browser/viewParts/contentWidgets/contentWidgets.ts

@@ -537,7 +537,7 @@ class Widget {
 			this.domNode.setTop(this._renderData.coordinate.top);
 			this.domNode.setLeft(this._renderData.coordinate.left);
 		} else {
-			this.domNode.setTop(this._renderData.coordinate.top + ctx.scrollTop - ctx.bigNumbersDelta);
+			this.domNode.setTop(this._renderData.coordinate.top + ctx.scrollTop);
 			this.domNode.setLeft(this._renderData.coordinate.left);
 		}
 

src/vs/editor/browser/viewParts/lines/viewLines.ts

@@ -662,7 +662,7 @@ export class ViewLines extends ViewPart implements IVisibleLinesHost<ViewLine>,
 		// (3) handle scrolling
 		this._linesContent.setLayerHinting(this._canUseLayerHinting);
 		this._linesContent.setContain('strict');
-		const adjustedScrollTop = this._context.viewLayout.getCurrentScrollTop() - viewportData.bigNumbersDelta;
+		const adjustedScrollTop = this._context.viewLayout.getCurrentScrollTop();
 		this._linesContent.setTop(-adjustedScrollTop);
 		this._linesContent.setLeft(-this._context.viewLayout.getCurrentScrollLeft());
 	}

src/vs/editor/browser/viewParts/margin/margin.ts

@@ -80,7 +80,7 @@ export class Margin extends ViewPart {
 	public render(ctx: RestrictedRenderingContext): void {
 		this._domNode.setLayerHinting(this._canUseLayerHinting);
 		this._domNode.setContain('strict');
-		const adjustedScrollTop = ctx.scrollTop - ctx.bigNumbersDelta;
+		const adjustedScrollTop = ctx.scrollTop;
 		this._domNode.setTop(-adjustedScrollTop);
 
 		const height = Math.min(ctx.scrollHeight, 1000000);

src/vs/editor/browser/viewParts/viewCursors/viewCursor.ts

@@ -166,7 +166,7 @@ export class ViewCursor {
 				left -= paddingLeft;
 			}
 
-			const top = ctx.getVerticalOffsetForLineNumber(position.lineNumber) - ctx.bigNumbersDelta;
+			const top = ctx.getVerticalOffsetForLineNumber(position.lineNumber);
 			return new ViewCursorRenderData(top, left, paddingLeft, width, this._lineHeight, textContent, textContentClassName);
 		}
 
@@ -196,7 +196,7 @@ export class ViewCursor {
 			textContentClassName = this._getTokenClassName(position);
 		}
 
-		let top = ctx.getVerticalOffsetForLineNumber(position.lineNumber) - ctx.bigNumbersDelta;
+		let top = ctx.getVerticalOffsetForLineNumber(position.lineNumber);
 		let height = this._lineHeight;
 
 		// Underline might interfere with clicking

src/vs/editor/browser/viewParts/viewZones/viewZones.ts

@@ -374,7 +374,7 @@ export class ViewZones extends ViewPart {
 			let newHeight = 0;
 			let newDisplay = 'none';
 			if (visibleZones.hasOwnProperty(id)) {
-				newTop = visibleZones[id].verticalOffset - ctx.bigNumbersDelta;
+				newTop = visibleZones[id].verticalOffset;
 				newHeight = visibleZones[id].height;
 				newDisplay = 'block';
 				// zone is visible

src/vs/editor/common/viewLayout/linesLayout.ts

@@ -644,17 +644,6 @@ export class LinesLayout {
 		let currentVerticalOffset = startLineNumberVerticalOffset;
 		let currentLineRelativeOffset = currentVerticalOffset;
 
-		// IE (all versions) cannot handle units above about 1,533,908 px, so every 500k pixels bring numbers down
-		const STEP_SIZE = 500000;
-		let bigNumbersDelta = 0;
-		if (startLineNumberVerticalOffset >= STEP_SIZE) {
-			// Compute a delta that guarantees that lines are positioned at `lineHeight` increments
-			bigNumbersDelta = Math.floor(startLineNumberVerticalOffset / STEP_SIZE) * STEP_SIZE;
-			bigNumbersDelta = Math.floor(bigNumbersDelta / lineHeight) * lineHeight;
-
-			currentLineRelativeOffset -= bigNumbersDelta;
-		}
-
 		const linesOffsets: number[] = [];
 
 		const verticalCenter = verticalOffset1 + (verticalOffset2 - verticalOffset1) / 2;
@@ -721,7 +710,6 @@ export class LinesLayout {
 		}
 
 		return {
-			bigNumbersDelta: bigNumbersDelta,
 			startLineNumber: startLineNumber,
 			endLineNumber: endLineNumber,
 			relativeVerticalOffset: linesOffsets,

src/vs/editor/common/viewLayout/viewLinesViewportData.ts

@@ -34,11 +34,6 @@ export class ViewportData {
 	 */
 	public readonly visibleRange: Range;
 
-	/**
-	 * Value to be substracted from `scrollTop` (in order to vertical offset numbers < 1MM)
-	 */
-	public readonly bigNumbersDelta: number;
-
 	/**
 	 * Positioning information about gaps whitespace.
 	 */
@@ -56,7 +51,6 @@ export class ViewportData {
 		this.startLineNumber = partialData.startLineNumber | 0;
 		this.endLineNumber = partialData.endLineNumber | 0;
 		this.relativeVerticalOffset = partialData.relativeVerticalOffset;
-		this.bigNumbersDelta = partialData.bigNumbersDelta | 0;
 		this.whitespaceViewportData = whitespaceViewportData;
 
 		this._model = model;

src/vs/editor/common/viewModel.ts

@@ -151,10 +151,6 @@ export interface IWhitespaceChangeAccessor {
 }
 
 export interface IPartialViewLinesViewportData {
-	/**
-	 * Value to be substracted from `scrollTop` (in order to vertical offset numbers < 1MM)
-	 */
-	readonly bigNumbersDelta: number;
 	/**
 	 * The first (partially) visible line number.
 	 */