From 42da5d8d32de3de482e1aa43b1c23299712497af Mon Sep 17 00:00:00 2001
From: Cory McWilliams <cory@unprompted.com>
Date: Thu, 26 Dec 2024 22:24:52 -0500
Subject: [PATCH] ssb: Experimenting with generating the w3 css theme colors.

---
 apps/ssb.json         |   2 +-
 apps/ssb/tf-styles.js | 177 ++++++++++++++++++++++++++++++++++++------
 2 files changed, 154 insertions(+), 25 deletions(-)

diff --git a/apps/ssb.json b/apps/ssb.json
index 0c3202847..e6be91963 100644
--- a/apps/ssb.json
+++ b/apps/ssb.json
@@ -1,5 +1,5 @@
 {
 	"type": "tildefriends-app",
 	"emoji": "🦀",
-	"previous": "&Us7cb8UfbwNoFVPQXDnGBdGDmxQwPdNwcNjaiai80YA=.sha256"
+	"previous": "&ZVNlEr66wkhZpf06nJJgIEBxO0LK+nvSnJ6vgD9JPkg=.sha256"
 }
diff --git a/apps/ssb/tf-styles.js b/apps/ssb/tf-styles.js
index e29ba61c3..a71d960e6 100644
--- a/apps/ssb/tf-styles.js
+++ b/apps/ssb/tf-styles.js
@@ -1,4 +1,4 @@
-import {css} from './lit-all.min.js';
+import {css, unsafeCSS} from './lit-all.min.js';
 
 const tf = css`
 	img {
@@ -285,30 +285,159 @@ hr{border:0;border-top:1px solid #eee;margin:20px 0}
 .w3-border-pale-yellow,.w3-hover-border-pale-yellow:hover{border-color:#ffffcc!important}.w3-border-pale-blue,.w3-hover-border-pale-blue:hover{border-color:#e7ffff!important}
 `;
 
-// prettier-ignore
-const w3_2016_snorkel_blue = css`
-.w3-theme-l5 {color:#000 !important; background-color:#e9f5ff !important}
-.w3-theme-l4 {color:#000 !important; background-color:#b5dffd !important}
-.w3-theme-l3 {color:#000 !important; background-color:#6bc0fc !important}
-.w3-theme-l2 {color:#fff !important; background-color:#21a0fa !important}
-.w3-theme-l1 {color:#fff !important; background-color:#0479cc !important}
-.w3-theme-d1 {color:#fff !important; background-color:#024575 !important}
-.w3-theme-d2 {color:#fff !important; background-color:#023e68 !important}
-.w3-theme-d3 {color:#fff !important; background-color:#02365b !important}
-.w3-theme-d4 {color:#fff !important; background-color:#022e4e !important}
-.w3-theme-d5 {color:#fff !important; background-color:#012641 !important}
+function rgb_to_hsl(r, g, b) {
+	let min,
+		max,
+		i,
+		l,
+		s,
+		maxcolor,
+		h,
+		rgb = [];
+	rgb[0] = r / 255;
+	rgb[1] = g / 255;
+	rgb[2] = b / 255;
+	min = rgb[0];
+	max = rgb[0];
+	maxcolor = 0;
+	for (i = 0; i < rgb.length - 1; i++) {
+		if (rgb[i + 1] <= min) {
+			min = rgb[i + 1];
+		}
+		if (rgb[i + 1] >= max) {
+			max = rgb[i + 1];
+			maxcolor = i + 1;
+		}
+	}
+	if (maxcolor == 0) {
+		h = (rgb[1] - rgb[2]) / (max - min);
+	}
+	if (maxcolor == 1) {
+		h = 2 + (rgb[2] - rgb[0]) / (max - min);
+	}
+	if (maxcolor == 2) {
+		h = 4 + (rgb[0] - rgb[1]) / (max - min);
+	}
+	if (isNaN(h)) {
+		h = 0;
+	}
+	h = h * 60;
+	if (h < 0) {
+		h = h + 360;
+	}
+	l = (min + max) / 2;
+	if (min == max) {
+		s = 0;
+	} else {
+		if (l < 0.5) {
+			s = (max - min) / (max + min);
+		} else {
+			s = (max - min) / (2 - max - min);
+		}
+	}
+	s = s;
+	return [h, s, l];
+}
 
-.w3-theme-light {color:#000 !important; background-color:#e9f5ff !important}
-.w3-theme-dark {color:#fff !important; background-color:#012641 !important}
-.w3-theme-action {color:#fff !important; background-color:#012641 !important}
+function hex_to_rgb(hex) {
+	if (hex.charAt(0) == '#') {
+		hex = hex.substring(1);
+	}
+	return [
+		parseInt(hex.substring(0, 2), 16),
+		parseInt(hex.substring(2, 4), 16),
+		parseInt(hex.substring(4, 6), 16),
+	];
+}
 
-.w3-theme {color:#fff !important; background-color:#034f84 !important}
-.w3-text-theme {color:#034f84 !important}
-.w3-border-theme {border-color:#034f84 !important}
+function hsl_to_rgb(hue, sat, light) {
+	let t2;
+	hue /= 60;
+	if (light <= 0.5) {
+		t2 = light * (sat + 1);
+	} else {
+		t2 = light + sat - light * sat;
+	}
+	let t1 = light * 2 - t2;
+	return [
+		hue_to_rgb(t1, t2, hue + 2) * 255,
+		hue_to_rgb(t1, t2, hue) * 255,
+		hue_to_rgb(t1, t2, hue - 2) * 255,
+	];
+}
+function hue_to_rgb(t1, t2, hue) {
+	if (hue < 0) {
+		hue += 6;
+	}
+	if (hue >= 6) {
+		hue -= 6;
+	}
+	if (hue < 1) {
+		return (t2 - t1) * hue + t1;
+	} else if (hue < 3) {
+		return t2;
+	} else if (hue < 4) {
+		return (t2 - t1) * (4 - hue) + t1;
+	} else {
+		return t1;
+	}
+}
 
-.w3-hover-theme:hover {color:#fff !important; background-color:#034f84 !important}
-.w3-hover-text-theme:hover {color:#034f84 !important}
-.w3-hover-border-theme:hover {border-color:#034f84 !important}
-`;
+function rgb_to_hex(rgb) {
+	const hex_pair = (x) => Math.floor(x).toString(16).padStart(2, '0');
+	return `#${hex_pair(rgb[0])}${hex_pair(rgb[1])}${hex_pair(rgb[2])}`;
+}
 
-export let styles = [tf, w3, w3_2016_snorkel_blue];
+function is_dark(hex, value) {
+	let [r, g, b] = hex_to_rgb(hex);
+	return (r * 299 + g * 587 + b * 114) / 1000 < value;
+}
+
+function generated() {
+	let k_color = '#034f84';
+	//let k_color = rgb_to_hex([Math.random() * 256, Math.random() * 256, Math.random() * 256]);
+	let [r, g, b] = hex_to_rgb(k_color);
+	let [h, s, l] = rgb_to_hsl(r, g, b);
+
+	let theme1 = {
+		l5: rgb_to_hex(hsl_to_rgb(h, s, l + ((1.0 - l) / 5) * 4.7)),
+		l4: rgb_to_hex(hsl_to_rgb(h, s, l + ((1.0 - l) / 5) * 4)),
+		l3: rgb_to_hex(hsl_to_rgb(h, s, l + ((1.0 - l) / 5) * 3)),
+		l2: rgb_to_hex(hsl_to_rgb(h, s, l + ((1.0 - l) / 5) * 2)),
+		l1: rgb_to_hex(hsl_to_rgb(h, s, l + ((1.0 - l) / 5) * 1)),
+		d0: rgb_to_hex(hsl_to_rgb(h, s, l)),
+		d1: rgb_to_hex(hsl_to_rgb(h, s, l - (l / 5) * 0.5)),
+		d2: rgb_to_hex(hsl_to_rgb(h, s, l - (l / 5) * 1)),
+		d3: rgb_to_hex(hsl_to_rgb(h, s, l - (l / 5) * 1.5)),
+		d4: rgb_to_hex(hsl_to_rgb(h, s, l - (l / 5) * 2)),
+		d5: rgb_to_hex(hsl_to_rgb(h, s, l - (l / 5) * 2.5)),
+	};
+	for (let [k, v] of Object.entries(theme1)) {
+		theme1['t' + k] = is_dark(v, 165) ? '#fff' : '#000';
+	}
+
+	let result = `
+		.w3-theme-l5 {color: ${theme1.tl5} !important; background-color: ${theme1.l5} !important}
+		.w3-theme-l4 {color: ${theme1.tl4} !important; background-color: ${theme1.l4} !important}
+		.w3-theme-l3 {color: ${theme1.tl3} !important; background-color: ${theme1.l3} !important}
+		.w3-theme-l2 {color: ${theme1.tl2} !important; background-color: ${theme1.l2} !important}
+		.w3-theme-l1 {color: ${theme1.tl1} !important; background-color: ${theme1.l1} !important}
+		.w3-theme-d1 {color: ${theme1.td1} !important; background-color: ${theme1.d1} !important}
+		.w3-theme-d2 {color: ${theme1.td2} !important; background-color: ${theme1.d2} !important}
+		.w3-theme-d3 {color: ${theme1.td3} !important; background-color: ${theme1.d3} !important}
+		.w3-theme-d4 {color: ${theme1.td4} !important; background-color: ${theme1.d4} !important}
+		.w3-theme-d5 {color: ${theme1.td5} !important; background-color: ${theme1.d5} !important}
+		.w3-theme-light {color: ${theme1.tl5} !important; background-color: ${theme1.l5} !important}
+		.w3-theme-dark {color: ${theme1.td5} !important; background-color: ${theme1.d5} !important}
+		.w3-theme-action {color: ${theme1.td5} !important; background-color: ${theme1.d5} !important}
+		.w3-theme {color: ${theme1.td0} !important; background-color: ${theme1.d0} !important}
+		.w3-text-theme {color: ${theme1.d0} !important}
+		.w3-border-theme {border-color: ${theme1.d0} !important}
+		.w3-hover-theme:hover {color: ${theme1.td0} !important; background-color: ${theme1.d0} !important}
+		.w3-hover-text-theme:hover {color: ${theme1.d0} !important}
+		.w3-hover-border-theme:hover {border-color: ${theme1.d0} !important}
+	`;
+	return unsafeCSS(result);
+}
+
+export let styles = [tf, w3, generated()];