sprotty/lib/features/viewport/zoom.d.ts

A next-gen framework for graphical views

/********************************************************************************
 * Copyright (c) 2017-2023 TypeFox and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/
import { Action } from 'sprotty-protocol/lib/actions';
import { Viewport } from 'sprotty-protocol/lib/model';
import { Point } from 'sprotty-protocol/lib/utils/geometry';
import { SModelElementImpl, SModelRootImpl } from '../../base/model/smodel';
import { MouseListener } from '../../base/views/mouse-tool';
import { ViewerOptions } from '../../base/views/viewer-options';
export declare function getZoom(label: SModelElementImpl): number;
export declare class ZoomMouseListener extends MouseListener {
    protected viewerOptions: ViewerOptions;
    wheel(target: SModelElementImpl, event: WheelEvent): Action[];
    protected isScrollMode(event: WheelEvent): boolean;
    protected processScroll(viewport: Viewport, event: WheelEvent): Viewport;
    protected processZoom(viewport: Viewport, target: SModelElementImpl, event: WheelEvent): Viewport | undefined;
    protected getViewportOffset(root: SModelRootImpl, event: WheelEvent): Point;
    protected getZoomFactor(event: WheelEvent): number;
}
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