From a92ad2b817b2c28b26e869897e03c14d30d0f991 Mon Sep 17 00:00:00 2001
From: Petri Hienonen <petri.hienonen@gmail.com>
Date: Fri, 14 Nov 2025 13:23:58 +0200
Subject: Add histogram

---
 app/svg.js | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

(limited to 'app/svg.js')

diff --git a/app/svg.js b/app/svg.js
index 92bd825..d977ead 100644
--- a/app/svg.js
+++ b/app/svg.js
@@ -25,6 +25,85 @@ export class SvgOptions {
 }
 
 export class Svg {
+	/**
+	 * Create a rectangle with explicit coordinates
+	 * @param {number} x
+	 * @param {number} y
+	 * @param {number} width
+	 * @param {number} height
+	 * @param {SvgOptions} [options=new SvgOptions()]
+	 * @returns {SVGRectElement}
+	 */
+	static rectXY(x, y, width, height, options = new SvgOptions()) {
+		const element = document.createElementNS("http://www.w3.org/2000/svg", "rect");
+		for (const [key, value] of Object.entries({
+			height: String(height),
+			width: String(width),
+			x: String(x),
+			y: String(y),
+			...options.attributes,
+		})) {
+			element.setAttribute(key, value);
+		}
+		Object.assign(element.style, options.styles);
+		if (options.id) element.id = options.id;
+		if (options.classes.length) element.classList.add(...options.classes.filter(Boolean));
+		element.append(...options.children.filter(Boolean));
+		return element;
+	}
+
+	/**
+	 * Create a text element at specific coordinates
+	 * @param {number} x
+	 * @param {number} y
+	 * @param {string} text
+	 * @param {SvgOptions} [options=new SvgOptions()]
+	 * @returns {SVGTextElement}
+	 */
+	static textXY(x, y, text, options = new SvgOptions()) {
+		const element = document.createElementNS("http://www.w3.org/2000/svg", "text");
+		element.textContent = text;
+		for (const [key, value] of Object.entries({
+			x: String(x),
+			y: String(y),
+			...options.attributes,
+		})) {
+			element.setAttribute(key, value);
+		}
+		Object.assign(element.style, options.styles);
+		if (options.id) element.id = options.id;
+		if (options.classes.length) element.classList.add(...options.classes.filter(Boolean));
+		element.append(...options.children.filter(Boolean));
+		return element;
+	}
+
+	/**
+	 * Create a line element
+	 * @param {number} x1
+	 * @param {number} y1
+	 * @param {number} x2
+	 * @param {number} y2
+	 * @param {SvgOptions} [options=new SvgOptions()]
+	 * @returns {SVGLineElement}
+	 */
+	static line(x1, y1, x2, y2, options = new SvgOptions()) {
+		const element = document.createElementNS("http://www.w3.org/2000/svg", "line");
+		for (const [key, value] of Object.entries({
+			x1: String(x1),
+			x2: String(x2),
+			y1: String(y1),
+			y2: String(y2),
+			...options.attributes,
+		})) {
+			element.setAttribute(key, value);
+		}
+		Object.assign(element.style, options.styles);
+		if (options.id) element.id = options.id;
+		if (options.classes.length) element.classList.add(...options.classes.filter(Boolean));
+		element.append(...options.children.filter(Boolean));
+		return element;
+	}
+
 	/**
 	 * Create an SVG element
 	 * @param {SvgOptions} [options=new SvgOptions()]
-- 
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