137 lines
3.7 KiB
JavaScript
137 lines
3.7 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 { Graph, utils, constants, RubberBandHandler } from '@maxgraph/core';
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import { globalTypes } from '../.storybook/preview';
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export default {
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title: 'Styles/DynamicStyle',
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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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// Creates the graph inside the given container
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const graph = new Graph(container);
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// Disables moving of edge labels in this examples
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graph.edgeLabelsMovable = false;
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// Enables rubberband selection
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if (args.rubberBand) new RubberBandHandler(graph);
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// Needs to set a flag to check for dynamic style changes,
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// that is, changes to styles on cells where the style was
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// not explicitely changed using mxStyleChange
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graph.getView().updateStyle = true;
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// Overrides Cell.getStyle to return a specific style
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// for edges that reflects their target terminal (in this case
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// the strokeColor will be equal to the target's fillColor).
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const getStyle = function () {
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// TODO super cannot be used here
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// let style = super.getStyle();
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let style = {};
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if (this.isEdge()) {
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const target = this.getTerminal(false);
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if (target != null) {
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const targetStyle = graph.getCurrentCellStyle(target);
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const fill = utils.getValue(targetStyle, 'fillColor');
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if (fill != null) {
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style.strokeColor = fill;
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}
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}
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} else if (this.isVertex()) {
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const geometry = this.getGeometry();
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if (geometry != null && geometry.width > 80) {
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style.fillColor = 'green';
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}
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}
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return style;
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};
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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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const v1 = graph.insertVertex({
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parent,
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value: 'Hello,',
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position: [20, 20],
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size: [80, 30],
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style: { fillColor: 'green' },
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});
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v1.getStyle = getStyle;
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const v2 = graph.insertVertex({
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parent,
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value: 'World!',
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position: [200, 150],
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size: [80, 30],
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style: { fillColor: 'blue' },
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});
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v2.getStyle = getStyle;
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const v3 = graph.insertVertex({
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parent,
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value: 'World!',
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position: [20, 150],
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size: [80, 30],
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style: { fillColor: 'red' },
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});
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v3.getStyle = getStyle;
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const e1 = graph.insertEdge({
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parent,
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value: 'Connect',
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source: v1,
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target: v2,
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style: {
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perimeterSpacing: 4,
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strokeWidth: 4,
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labelBackgroundColor: 'white',
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fontStyle: 1,
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},
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});
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e1.getStyle = getStyle;
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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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