feature: generate pdf from actor

src/elements/row.ts

@@ -0,0 +1,66 @@
+import { AbstractElement } from './abstract-element';
+import jsPDF from 'jspdf';
+import { MARGINS } from '../constants';
+
+export class Row extends AbstractElement {
+  public elements: AbstractElement[] = [];
+  public widthPercents?: number[];
+  public maxWidths?: number[];
+
+  constructor(
+    x: number,
+    y: number,
+    elements: AbstractElement[],
+    maxWidth?: number | undefined,
+    widthPercents?: number[],
+    maxWidths?: number[]
+  ) {
+    super(x, y, maxWidth);
+    this.elements = elements ?? [];
+    this.widthPercents = widthPercents ?? [];
+    this.maxWidths = maxWidths ?? [];
+  }
+
+  public render(doc: jsPDF, maxWidth?: number): jsPDF {
+    const elements = this.elements ?? [];
+    let maxWidths = this.maxWidths ?? [];
+    let widthPercents = this.widthPercents ?? [];
+
+    if (widthPercents.length !== elements.length) {
+      widthPercents = [];
+      for (let i = 0; i < elements.length; i++) {
+        if (widthPercents[i] == null) {
+          widthPercents[i] = 100 / elements.length;
+        }
+      }
+    }
+    if (maxWidths.length !== elements.length) {
+      maxWidths = [];
+    }
+
+    const pageWidth = doc.internal.pageSize.width;
+    const rowWidth =
+      maxWidth ?? this.maxWidth ?? pageWidth - this.x - MARGINS.right;
+
+    let currentX = this.x;
+    for (let i = 0; i < elements.length; i++) {
+      const element = elements[i];
+      const percent = widthPercents[i];
+      const percentWidth = (rowWidth * percent) / 100;
+      const maxChildWidth = maxWidths[i] ?? percentWidth;
+      element.x = currentX;
+      element.y = this.y;
+      element.render(doc, maxChildWidth);
+      currentX += percentWidth;
+    }
+    return doc;
+  }
+
+  public getHeight(doc?: jsPDF): number {
+    let maxHeight = 0;
+    for (const element of this.elements) {
+      maxHeight = Math.max(maxHeight, element.getHeight(doc));
+    }
+    return maxHeight;
+  }
+}