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1× | import { getBBox } from '../../util/Elements';
var LOW_PRIORITY = 500;
import {
append as svgAppend,
attr as svgAttr,
create as svgCreate
} from 'tiny-svg';
import {
query as domQuery
} from 'min-dom';
import {
assign
} from 'min-dash';
/**
* @class
*
* A plugin that adds an outline to shapes and connections that may be activated and styled
* via CSS classes.
*
* @param {EventBus} eventBus
* @param {Styles} styles
* @param {ElementRegistry} elementRegistry
*/
export default function Outline(eventBus, styles, elementRegistry) {
this.offset = 6;
var OUTLINE_STYLE = styles.cls('djs-outline', [ 'no-fill' ]);
var self = this;
function createOutline(gfx, bounds) {
var outline = svgCreate('rect');
svgAttr(outline, assign({
x: 10,
y: 10,
width: 100,
height: 100
}, OUTLINE_STYLE));
svgAppend(gfx, outline);
return outline;
}
// A low priortity is necessary, because outlines of labels have to be updated
// after the label bounds have been updated in the renderer.
eventBus.on([ 'shape.added', 'shape.changed' ], LOW_PRIORITY, function(event) {
var element = event.element,
gfx = event.gfx;
var outline = domQuery('.djs-outline', gfx);
if (!outline) {
outline = createOutline(gfx, element);
}
self.updateShapeOutline(outline, element);
});
eventBus.on([ 'connection.added', 'connection.changed' ], function(event) {
var element = event.element,
gfx = event.gfx;
var outline = domQuery('.djs-outline', gfx);
if (!outline) {
outline = createOutline(gfx, element);
}
self.updateConnectionOutline(outline, element);
});
}
/**
* Updates the outline of a shape respecting the dimension of the
* element and an outline offset.
*
* @param {SVGElement} outline
* @param {djs.model.Base} element
*/
Outline.prototype.updateShapeOutline = function(outline, element) {
svgAttr(outline, {
x: -this.offset,
y: -this.offset,
width: element.width + this.offset * 2,
height: element.height + this.offset * 2
});
};
/**
* Updates the outline of a connection respecting the bounding box of
* the connection and an outline offset.
*
* @param {SVGElement} outline
* @param {djs.model.Base} element
*/
Outline.prototype.updateConnectionOutline = function(outline, connection) {
var bbox = getBBox(connection);
svgAttr(outline, {
x: bbox.x - this.offset,
y: bbox.y - this.offset,
width: bbox.width + this.offset * 2,
height: bbox.height + this.offset * 2
});
};
Outline.$inject = ['eventBus', 'styles', 'elementRegistry']; |