147 lines
4.0 KiB
JavaScript
147 lines
4.0 KiB
JavaScript
/*
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Copyright 2021-present The maxGraph project Contributors
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Copyright (c) 2006-2020, JGraph Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {
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Graph,
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SelectionHandler,
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InternalEvent,
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constants,
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EdgeHandler,
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EdgeStyle,
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RubberBandHandler,
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} from '@maxgraph/core';
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import { globalTypes } from '../.storybook/preview';
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export default {
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title: 'Misc/Guides',
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argTypes: {
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...globalTypes,
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rubberBand: {
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type: 'boolean',
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defaultValue: true,
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},
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},
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};
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const Template = ({ label, ...args }) => {
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const container = document.createElement('div');
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container.style.position = 'relative';
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container.style.overflow = 'hidden';
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container.style.width = `${args.width}px`;
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container.style.height = `${args.height}px`;
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container.style.background = 'url(/images/grid.gif)';
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container.style.cursor = 'default';
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// Enables guides
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SelectionHandler.prototype.guidesEnabled = true;
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// Alt disables guides
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SelectionHandler.prototype.useGuidesForEvent = function (me) {
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return !InternalEvent.isAltDown(me.getEvent());
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};
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// Defines the guides to be red (default)
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// constants.GUIDE_COLOR = '#FF0000';
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// Defines the guides to be 1 pixel (default)
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// constants.GUIDE_STROKEWIDTH = 1;
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// Enables snapping waypoints to terminals
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EdgeHandler.prototype.snapToTerminals = true;
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// Creates the graph inside the given container
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const graph = new Graph(container);
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graph.setConnectable(true);
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graph.gridSize = 30;
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// Changes the default style for edges "in-place" and assigns
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// an alternate edge style which is applied in Graph.flip
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// when the user double clicks on the adjustment control point
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// of the edge. The ElbowConnector edge style switches to TopToBottom
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// if the horizontal style is true.
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const style = graph.getStylesheet().getDefaultEdgeStyle();
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style.rounded = true;
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style.edge = EdgeStyle.ElbowConnector;
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graph.alternateEdgeStyle = 'elbow=vertical';
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// Enables rubberband selection
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if (args.rubberBand) new RubberBandHandler(graph);
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// Gets the default parent for inserting new cells. This
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// is normally the first child of the root (ie. layer 0).
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const parent = graph.getDefaultParent();
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// Adds cells to the model in a single step
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graph.batchUpdate(() => {
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let v1;
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v1 = graph.insertVertex(parent, null, 'Hello,', 20, 40, 80, 70);
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const v2 = graph.insertVertex(parent, null, 'World!', 200, 140, 80, 40);
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const e1 = graph.insertEdge(parent, null, '', v1, v2);
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});
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// Handles cursor keys
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const nudge = function (keyCode) {
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if (!graph.isSelectionEmpty()) {
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let dx = 0;
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let dy = 0;
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if (keyCode === 37) {
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dx = -1;
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} else if (keyCode === 38) {
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dy = -1;
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} else if (keyCode === 39) {
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dx = 1;
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} else if (keyCode === 40) {
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dy = 1;
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}
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graph.moveCells(graph.getSelectionCells(), dx, dy);
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}
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// Transfer initial focus to graph container for keystroke handling
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graph.container.focus();
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// Handles keystroke events
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const keyHandler = new KeyHandler(graph);
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// Ignores enter keystroke. Remove this line if you want the
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// enter keystroke to stop editing
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keyHandler.enter = function () {};
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keyHandler.bindKey(37, function () {
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nudge(37);
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});
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keyHandler.bindKey(38, function () {
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nudge(38);
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});
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keyHandler.bindKey(39, function () {
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nudge(39);
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});
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keyHandler.bindKey(40, function () {
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nudge(40);
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});
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};
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return container;
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};
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export const Default = Template.bind({});
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