SQL Operations Studio Public Preview 1 (0.23) release source code

src/vs/base/browser/ui/scrollbar/horizontalScrollbar.ts

@@ -0,0 +1,94 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import { AbstractScrollbar, ScrollbarHost, ISimplifiedMouseEvent } from 'vs/base/browser/ui/scrollbar/abstractScrollbar';
+import { StandardMouseWheelEvent } from 'vs/base/browser/mouseEvent';
+import { ScrollableElementResolvedOptions } from 'vs/base/browser/ui/scrollbar/scrollableElementOptions';
+import { Scrollable, ScrollEvent, ScrollbarVisibility, INewScrollPosition } from 'vs/base/common/scrollable';
+import { ScrollbarState } from 'vs/base/browser/ui/scrollbar/scrollbarState';
+import { ARROW_IMG_SIZE } from 'vs/base/browser/ui/scrollbar/scrollbarArrow';
+
+export class HorizontalScrollbar extends AbstractScrollbar {
+
+	constructor(scrollable: Scrollable, options: ScrollableElementResolvedOptions, host: ScrollbarHost) {
+		super({
+			lazyRender: options.lazyRender,
+			host: host,
+			scrollbarState: new ScrollbarState(
+				(options.horizontalHasArrows ? options.arrowSize : 0),
+				(options.horizontal === ScrollbarVisibility.Hidden ? 0 : options.horizontalScrollbarSize),
+				(options.vertical === ScrollbarVisibility.Hidden ? 0 : options.verticalScrollbarSize)
+			),
+			visibility: options.horizontal,
+			extraScrollbarClassName: 'horizontal',
+			scrollable: scrollable
+		});
+
+		if (options.horizontalHasArrows) {
+			let arrowDelta = (options.arrowSize - ARROW_IMG_SIZE) / 2;
+			let scrollbarDelta = (options.horizontalScrollbarSize - ARROW_IMG_SIZE) / 2;
+
+			this._createArrow({
+				className: 'left-arrow',
+				top: scrollbarDelta,
+				left: arrowDelta,
+				bottom: void 0,
+				right: void 0,
+				bgWidth: options.arrowSize,
+				bgHeight: options.horizontalScrollbarSize,
+				onActivate: () => this._host.onMouseWheel(new StandardMouseWheelEvent(null, 1, 0)),
+			});
+
+			this._createArrow({
+				className: 'right-arrow',
+				top: scrollbarDelta,
+				left: void 0,
+				bottom: void 0,
+				right: arrowDelta,
+				bgWidth: options.arrowSize,
+				bgHeight: options.horizontalScrollbarSize,
+				onActivate: () => this._host.onMouseWheel(new StandardMouseWheelEvent(null, -1, 0)),
+			});
+		}
+
+		this._createSlider(Math.floor((options.horizontalScrollbarSize - options.horizontalSliderSize) / 2), 0, null, options.horizontalSliderSize);
+	}
+
+	protected _updateSlider(sliderSize: number, sliderPosition: number): void {
+		this.slider.setWidth(sliderSize);
+		this.slider.setLeft(sliderPosition);
+	}
+
+	protected _renderDomNode(largeSize: number, smallSize: number): void {
+		this.domNode.setWidth(largeSize);
+		this.domNode.setHeight(smallSize);
+		this.domNode.setLeft(0);
+		this.domNode.setBottom(0);
+	}
+
+	public onDidScroll(e: ScrollEvent): boolean {
+		this._shouldRender = this._onElementScrollSize(e.scrollWidth) || this._shouldRender;
+		this._shouldRender = this._onElementScrollPosition(e.scrollLeft) || this._shouldRender;
+		this._shouldRender = this._onElementSize(e.width) || this._shouldRender;
+		return this._shouldRender;
+	}
+
+	protected _mouseDownRelativePosition(offsetX: number, offsetY: number): number {
+		return offsetX;
+	}
+
+	protected _sliderMousePosition(e: ISimplifiedMouseEvent): number {
+		return e.posx;
+	}
+
+	protected _sliderOrthogonalMousePosition(e: ISimplifiedMouseEvent): number {
+		return e.posy;
+	}
+
+	public writeScrollPosition(target: INewScrollPosition, scrollPosition: number): void {
+		target.scrollLeft = scrollPosition;
+	}
+}