feat: added new sloped-rectangle shape

packages/mermaid/src/rendering-util/rendering-elements/nodes.js

@@ -29,6 +29,7 @@ import { labelRect } from './shapes/labelRect.js';
 import { triangle } from './shapes/triangle.js';
 import { halfRoundedRectangle } from './shapes/halfRoundedRectangle.js';
 import { curvedTrapezoid } from './shapes/curvedTrapezoid.js';
+import { slopedRect } from './shapes/slopedRect.js';
 
 const shapes = {
   state,
@@ -61,6 +62,7 @@ const shapes = {
   triangle,
   halfRoundedRectangle,
   curvedTrapezoid,
+  slopedRect,
 };
 
 const nodeElems = new Map();

packages/mermaid/src/rendering-util/rendering-elements/shapes/slopedRect.ts

@@ -0,0 +1,68 @@
+import { labelHelper, updateNodeBounds, getNodeClasses, createPathFromPoints } from './util.js';
+import intersect from '../intersect/index.js';
+import type { Node } from '$root/rendering-util/types.d.ts';
+import {
+  styles2String,
+  userNodeOverrides,
+} from '$root/rendering-util/rendering-elements/shapes/handdrawnStyles.js';
+import rough from 'roughjs';
+
+function createSlopedRectPathD(x: number, y: number, totalWidth: number, totalHeight: number) {
+  const rw = totalWidth;
+  const rh = totalHeight;
+
+  const points = [
+    { x, y },
+    { x: x + rw, y: y - rh * 0.6 },
+    { x: x + rw, y: y + rh },
+    { x, y: y + rh },
+  ];
+
+  const rectPath = createPathFromPoints(points);
+
+  return rectPath;
+}
+
+export const slopedRect = async (parent: SVGAElement, node: Node) => {
+  const { labelStyles, nodeStyles } = styles2String(node);
+  node.labelStyle = labelStyles;
+  const { shapeSvg, bbox } = await labelHelper(parent, node, getNodeClasses(node));
+  const w = bbox.width + node.padding;
+  const h = bbox.height + node.padding;
+
+  const { cssStyles } = node;
+
+  // @ts-ignore - rough is not typed
+  const rc = rough.svg(shapeSvg);
+  const options = userNodeOverrides(node, {});
+
+  if (node.look !== 'handdrawn') {
+    options.roughness = 0;
+    options.fillStyle = 'solid';
+  }
+
+  const pathData = createSlopedRectPathD(0, 0, w, h);
+  const shapeNode = rc.path(pathData, options);
+
+  const polygon = shapeSvg.insert(() => shapeNode, ':first-child');
+  polygon.attr('class', 'basic label-container');
+
+  if (cssStyles) {
+    polygon.attr('style', cssStyles);
+  }
+
+  if (nodeStyles) {
+    polygon.attr('style', nodeStyles);
+  }
+
+  polygon.attr('transform', `translate(${-w / 2}, ${-h / 2})`);
+
+  updateNodeBounds(node, polygon);
+
+  node.intersect = function (point) {
+    const pos = intersect.polygon(node, point);
+    return pos;
+  };
+
+  return shapeSvg;
+};