From 48a6712e480fe484157e753579a19d712a49f6ac Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Fri, 21 May 2021 23:59:06 +0200
Subject: Add map zoom-out button.

---
 public/common/client.js            | 25 +++++++++++++++++++++++++
 public/common/grid.css             |  6 ++++++
 public/images/magnifying-glass.svg |  1 +
 3 files changed, 32 insertions(+)
 create mode 100644 public/images/magnifying-glass.svg

diff --git a/public/common/client.js b/public/common/client.js
index ea1c12b..cee9ea5 100644
--- a/public/common/client.js
+++ b/public/common/client.js
@@ -318,8 +318,33 @@ function toggle_chat() {
 		show_chat();
 }
 
+function zoom_map() {
+	let grid = document.querySelector(".grid_center");
+	let mapwrap = document.querySelector(".mapwrap");
+	let map = document.querySelector(".map");
+	map.style.transform = 'none';
+	mapwrap.style.height = 'auto';
+	if (mapwrap.classList.contains("fit")) {
+		let { width: ww, height: wh } = mapwrap.getBoundingClientRect();
+		let { width: cw, height: ch } = map.getBoundingClientRect();
+		let scale = ww / cw;
+		if (scale < 1) {
+			map.style.transform = "scale(" + scale + ")";
+			mapwrap.style.height = (ch * scale) + "px";
+		}
+	}
+}
+
+window.addEventListener('resize', zoom_map);
+
+function toggle_zoom() {
+	document.querySelector(".mapwrap").classList.toggle('fit');
+	zoom_map();
+}
+
 function toggle_log() {
 	document.querySelector(".grid_window").classList.toggle("hide_log");
+	zoom_map();
 }
 
 function show_action_button(sel, action, use_label = false) {
diff --git a/public/common/grid.css b/public/common/grid.css
index 95a2ee4..1ef92da 100644
--- a/public/common/grid.css
+++ b/public/common/grid.css
@@ -224,9 +224,15 @@ html, body, div {
 	transform: scale(2.0) translate(0,-35px);
 }
 
+.mapwrap.fit {
+	overflow: hidden;
+	max-width: 100%;
+}
+
 .map {
 	margin: 0 auto;
 	box-shadow: 0px 1px 10px rgba(0,0,0,0.5);
+	transform-origin: 0 0;
 }
 
 button {
diff --git a/public/images/magnifying-glass.svg b/public/images/magnifying-glass.svg
new file mode 100644
index 0000000..39cc33b
--- /dev/null
+++ b/public/images/magnifying-glass.svg
@@ -0,0 +1 @@
+<svg style="height: 512px; width: 512px;" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><g class="" style="" transform="translate(0,0)"><path d="M333.78 20.188c-39.97 0-79.96 15.212-110.405 45.656-58.667 58.667-60.796 152.72-6.406 213.97l-15.782 15.748 13.25 13.25 15.75-15.78c61.248 54.39 155.3 52.26 213.968-6.407 60.887-60.886 60.888-159.894 0-220.78C413.713 35.4 373.753 20.187 333.78 20.187zm0 18.562c35.15 0 70.285 13.44 97.158 40.313 53.745 53.745 53.744 140.6 0 194.343-51.526 51.526-133.46 53.643-187.5 6.375l.218-.217c-2.35-2.05-4.668-4.17-6.906-6.407-2.207-2.206-4.288-4.496-6.313-6.812l-.218.22c-47.27-54.04-45.152-135.976 6.374-187.502C263.467 52.19 298.63 38.75 333.78 38.75zm0 18.813c-30.31 0-60.63 11.6-83.81 34.78-46.362 46.362-46.362 121.234 0 167.594 10.14 10.142 21.632 18.077 33.905 23.782-24.91-19.087-40.97-49.133-40.97-82.94 0-15.323 3.292-29.888 9.22-43-4.165 20.485.44 40.88 14.47 54.907 24.583 24.585 68.744 20.318 98.624-9.562 29.88-29.88 34.146-74.04 9.56-98.625-2.375-2.376-4.943-4.473-7.655-6.313 45.13 8.648 79.954 46.345 84.25 92.876 4.44-35.07-6.82-71.726-33.813-98.72-23.18-23.18-53.47-34.78-83.78-34.78zM176.907 297.688L42.094 432.5l34.562 34.563L211.47 332.25l-34.564-34.563zM40 456.813L24 472.78 37.22 486l15.968-16L40 456.812z" fill="#000" fill-opacity="1"></path></g></svg>
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