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alschmiedt
107 lines
2.8 KiB
JavaScript
107 lines
2.8 KiB
JavaScript
/**
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* @license
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* Copyright 2020 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Events fired as a result of a viewport change.
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*/
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'use strict';
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/**
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* Events fired as a result of a viewport change.
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* @class
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*/
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goog.module('Blockly.Events.ViewportChange');
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const eventUtils = goog.require('Blockly.Events.utils');
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const object = goog.require('Blockly.utils.object');
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const registry = goog.require('Blockly.registry');
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const {UiBase} = goog.require('Blockly.Events.UiBase');
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/**
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* Class for a viewport change event.
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* @param {number=} opt_top Top-edge of the visible portion of the workspace,
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* relative to the workspace origin. Undefined for a blank event.
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* @param {number=} opt_left Left-edge of the visible portion of the workspace,
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* relative to the workspace origin. Undefined for a blank event.
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* @param {number=} opt_scale The scale of the workspace. Undefined for a blank
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* event.
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* @param {string=} opt_workspaceId The workspace identifier for this event.
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* Undefined for a blank event.
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* @param {number=} opt_oldScale The old scale of the workspace. Undefined for a
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* blank event.
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* @extends {UiBase}
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* @constructor
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* @alias Blockly.Events.ViewportChange
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*/
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const ViewportChange = function(
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opt_top, opt_left, opt_scale, opt_workspaceId, opt_oldScale) {
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ViewportChange.superClass_.constructor.call(this, opt_workspaceId);
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/**
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* Top-edge of the visible portion of the workspace, relative to the workspace
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* origin.
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* @type {number|undefined}
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*/
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this.viewTop = opt_top;
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/**
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* Left-edge of the visible portion of the workspace, relative to the
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* workspace origin.
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* @type {number|undefined}
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*/
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this.viewLeft = opt_left;
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/**
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* The scale of the workspace.
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* @type {number|undefined}
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*/
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this.scale = opt_scale;
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/**
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* The old scale of the workspace.
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* @type {number|undefined}
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*/
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this.oldScale = opt_oldScale;
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};
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object.inherits(ViewportChange, UiBase);
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/**
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* Type of this event.
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* @type {string}
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*/
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ViewportChange.prototype.type = eventUtils.VIEWPORT_CHANGE;
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/**
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* Encode the event as JSON.
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* @return {!Object} JSON representation.
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*/
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ViewportChange.prototype.toJson = function() {
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const json = ViewportChange.superClass_.toJson.call(this);
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json['viewTop'] = this.viewTop;
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json['viewLeft'] = this.viewLeft;
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json['scale'] = this.scale;
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json['oldScale'] = this.oldScale;
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return json;
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};
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/**
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* Decode the JSON event.
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* @param {!Object} json JSON representation.
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*/
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ViewportChange.prototype.fromJson = function(json) {
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ViewportChange.superClass_.fromJson.call(this, json);
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this.viewTop = json['viewTop'];
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this.viewLeft = json['viewLeft'];
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this.scale = json['scale'];
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this.oldScale = json['oldScale'];
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};
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registry.register(
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registry.Type.EVENT, eventUtils.VIEWPORT_CHANGE, ViewportChange);
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exports.ViewportChange = ViewportChange;
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