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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Ethos High-Res Tile Generator</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.10.1/jszip.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/2.0.5/FileSaver.min.js"></script>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<link rel="stylesheet" href="https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.css" />
<script src="https://unpkg.com/leaflet-control-geocoder/dist/Control.Geocoder.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/leaflet.draw.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet.draw/1.0.4/leaflet.draw.js"></script>
<style>
:root { --viewport-bottom-offset: 0px; }
body { margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; display: flex; height: 100vh; background-color: #121212; overflow: hidden; }
::selection { background: #87b025; color: #fff; }
::-moz-selection { background: #87b025; color: #fff; }
#controls { width: 340px; min-width: 340px; background: #1e1e1e; color: #e0e0e0; padding: 20px; box-sizing: border-box; display: flex; flex-direction: column; gap: 15px; overflow-y: auto; border-right: 1px solid #333; box-shadow: 2px 0 5px rgba(0,0,0,0.5); z-index: 2000; transition: transform 0.3s ease; }
@media (max-width: 1024px) {
#controls { position: absolute; left: 0; top: 0; bottom: 0; box-shadow: 5px 0 15px rgba(0,0,0,0.7); }
#controls.hidden { transform: translateX(-100%); }
#menu-toggle { display: block !important; }
.leaflet-top.leaflet-left { top: 52px; }
}
#menu-toggle { display: none; position: absolute; top: 10px; left: 10px; z-index: 2999; background: #87b025; color: white; border: none; border-radius: 4px; padding: 8px 12px; font-weight: bold; cursor: pointer; transition: left 0.3s ease; }
.header-main { margin-top: 5px; font-size: 21px; text-align: center; border-bottom: 1px solid #333; padding-bottom: 15px; font-weight: bold; line-height: 1.2; text-transform: uppercase; }
.text-white { color: #ffffff; }
.text-green { color: #87b025; }
.label { font-size: 12px; text-transform: uppercase; color: #aaa; margin-bottom: 5px; font-weight: bold; }
#controls select, #controls input { width: 100%; padding: 10px; font-size: 14px; border-radius: 4px; border: 1px solid #444; background: #2a2a2a; color: #fff; box-sizing: border-box; outline: none; transition: border 0.3s; }
#controls select:focus, #controls input:focus { border-color: #87b025; }
.zoom-row { display: flex; gap: 10px; width: 100%; }
.zoom-row > div { flex: 1; }
#controls button { background: #87b025; color: white; font-weight: bold; font-size: 15px; cursor: pointer; padding: 12px; border: none; border-radius: 4px; transition: background 0.3s; margin-top: 5px; }
#controls button:hover { background: #71951f; }
#syncBtn { background: #87b025; color: white; font-weight: bold; font-size: 15px; cursor: pointer; padding: 12px; border: none; border-radius: 4px; transition: background 0.3s; margin-top: 5px; }
#syncBtn:hover { background: #71951f; }
#linkSDBtn { background: #ff9800 !important; color: #000 !important; padding: 8px !important; font-size: 13px !important; }
#linkSDBtn:hover { background: #e68a00 !important; }
#linkSDBtn.linked { background: #4caf50 !important; color: #fff !important; }
.google-warning, .yaapu-warning { font-size: 11px; color: #ffeb3b; margin-top: -10px; display: none; padding: 8px; background: rgba(255,152,0,0.1); border-radius: 4px; border: 1px solid rgba(255,152,0,0.3); line-height: 1.4; }
.yaapu-warning { color: #ff5252; background: rgba(255, 82, 82, 0.1); border-color: rgba(255, 82, 82, 0.3); }
.toggle-container { display: flex; align-items: center; justify-content: space-between; background: #2a2a2a; padding: 10px; border-radius: 4px; border: 1px solid #444; }
.switch { position: relative; display: inline-block; width: 40px; height: 20px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #555; transition: .4s; border-radius: 20px; }
.slider:before { position: absolute; content: ""; height: 14px; width: 14px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: #87b025; }
input:checked + .slider:before { transform: translateX(20px); }
#syncDock { display: flex; flex-direction: column; gap: 8px; }
#syncDockMapHost { position: absolute; left: 50%; transform: translateX(-50%); bottom: calc(10px + env(safe-area-inset-bottom, 0px) + var(--viewport-bottom-offset, 0px)); z-index: 1006; pointer-events: none; width: 300px; max-width: calc(100vw - 20px); }
#syncDock.map-dock { pointer-events: auto; background: rgba(30, 30, 30, 0.92); border: 2px solid #87b025; border-radius: 6px; padding: 10px; box-shadow: 0 0 12px rgba(0,0,0,0.55); }
#syncDock.map-dock #syncBtn { margin-top: 0; width: 100%; }
#syncDock.map-dock #status { margin-top: 0; min-height: auto; }
#map.sync-dock-visible #mouse-coords { bottom: calc(26px + env(safe-area-inset-bottom, 0px) + var(--viewport-bottom-offset, 0px)); }
#map.sync-dock-visible .leaflet-bottom { bottom: calc(10px + env(safe-area-inset-bottom, 0px) + var(--viewport-bottom-offset, 0px)); }
#map:fullscreen #mouse-coords, #map:fullscreen #syncDockMapHost, #map:fullscreen .leaflet-bottom { --viewport-bottom-offset: 0px !important; }
#map:fullscreen.sync-dock-visible #mouse-coords { bottom: calc(160px + env(safe-area-inset-bottom, 0px)); }
#map:fullscreen.sync-dock-visible .leaflet-bottom { bottom: calc(160px + env(safe-area-inset-bottom, 0px)); }
#status { font-size: 13px; color: #ffeb3b; text-align: center; margin-top: 10px; min-height: 20px; font-weight: bold;}
#map { position: relative; flex-grow: 1; height: 100%; background: #222; }
#crosshair { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: #87b025; font-size: 32px; font-weight: 300; z-index: 1000; pointer-events: none; line-height: 1; text-shadow: 0px 0px 3px rgba(0,0,0,0.8); transition: color 0.3s; }
.side-label { background: rgba(30, 30, 30, 0.8) !important; border: 1px solid #87b025 !important; border-radius: 3px !important; color: #fff !important; font-family: 'Consolas', monospace !important; font-size: 10px !important; padding: 3px 8px !important; white-space: nowrap !important; box-shadow: 0 0 5px rgba(0,0,0,0.5); pointer-events: none; text-align: center; min-width: 50px; }
.leaflet-control-geocoder-form input { color: #ffffff !important; background: #333 !important; font-size: 14px !important; height: 30px !important; padding: 0 8px !important; outline: none; border: none !important; margin: 0 !important; }
.leaflet-control-scale-line, #mouse-coords { background: rgba(0, 0, 0, 0.7) !important; color: #ffffff !important; border: 2px solid #87b025 !important; border-top: none !important; font-weight: bold !important; text-shadow: 1px 1px #000; transition: border-color 0.3s; box-sizing: border-box; height: 20px; display: flex; align-items: center; font-family: 'Consolas', monospace; font-size: 11px; z-index: 1002; padding: 0 8px; margin: 0; line-height: 1; }
.leaflet-control-scale-line { padding: 0 8px !important; margin: 0 !important; }
.leaflet-control-scale { padding: 0 !important; margin: 0 0 0 10px !important; }
.leaflet-bottom { bottom: calc(10px + env(safe-area-inset-bottom, 0px) + var(--viewport-bottom-offset, 0px)) !important; }
#map.sync-dock-visible .leaflet-bottom { bottom: calc(10px + env(safe-area-inset-bottom, 0px) + var(--viewport-bottom-offset, 0px)) !important; }
#mouse-coords { position: absolute; bottom: calc(36px + env(safe-area-inset-bottom, 0px) + var(--viewport-bottom-offset, 0px)); right: 10px; white-space: nowrap; }
.measuring-addon { border-right: 1px solid rgba(135, 176, 37, 0.5); margin-right: 10px; padding-right: 10px; color: #ffeb3b; }
#alt-output { border-left: 1px solid rgba(135, 176, 37, 0.5); margin-left: 10px; padding-left: 10px; color: #87b025; }
#zoom-display-map, #measure-btn-map, #fullscreen-btn-map { position: absolute; right: 10px; z-index: 1005; background: rgba(30, 30, 30, 0.9); color: #87b025; border: 2px solid #87b025; border-radius: 4px; font-weight: bold; box-shadow: 0 0 10px rgba(0,0,0,0.5); font-size: 11px; width: 101px; height: 26px; display: flex; align-items: center; justify-content: center; transition: 0.3s; }
#zoom-display-map { top: 10px; pointer-events: none; }
#measure-btn-map { top: 44px; cursor: pointer; gap: 6px; }
#fullscreen-btn-map { top: 78px; cursor: pointer; }
#measure-btn-map.active { background: #87b025; color: #fff; border-color: #fff; }
/*
* Temporary viewport debug overlay kept for future mobile browser troubleshooting.
* Re-enable together with the matching HTML block and JS update block below.
*/
.leaflet-control-geocoder { background: #333 !important; border: 2px solid #87b025 !important; border-radius: 4px !important; transition: border-color 0.3s; z-index: 2000 !important; }
.leaflet-control-geocoder-icon { filter: invert(1); width: 30px !important; height: 30px !important; }
.leaflet-control-geocoder-alternatives { background: #ffffff !important; border: 1px solid #ccc !important; box-shadow: 0 4px 15px rgba(0,0,0,0.5) !important; margin-top: 5px !important; padding: 0 !important; max-width: 320px !important; z-index: 10000 !important; position: absolute !important; }
.leaflet-control-geocoder-alternatives a { color: #000 !important; font-size: 13px !important; padding: 10px 14px !important; display: block !important; text-decoration: none !important; }
.leaflet-control-geocoder-alternatives a:hover, .leaflet-control-geocoder-selected { background-color: #87b025 !important; color: #ffffff !important; }
.leaflet-control-draw { margin-bottom: 0 !important; }
.leaflet-draw-toolbar { margin-top: -1px !important; background: #2a2a2a !important; border: 1px solid #444 !important; border-radius: 0 !important; overflow: hidden; }
.leaflet-draw-toolbar a { width: 34px !important; height: 34px !important; background-color: transparent !important; filter: invert(61%) sepia(85%) saturate(375%) hue-rotate(39deg) brightness(93%) contrast(89%); transition: filter 0.3s; }
.area-unit-control { margin-top: -1px !important; background: #2a2a2a !important; border: 1px solid #444 !important; border-radius: 0 0 4px 4px !important; overflow: hidden; box-shadow: 0 1px 5px rgba(0,0,0,0.65); }
.area-unit-control select { width: 34px !important; height: 34px !important; background: transparent; color: #87b025; border: none; font-weight: bold; font-size: 11px; cursor: pointer; outline: none; text-align: center; appearance: none; padding: 0; margin: 0; text-align-last: center; transition: color 0.3s;}
.location-control { margin-top: -1px !important; background: #2a2a2a !important; border: 1px solid #444 !important; border-radius: 0 0 4px 4px !important; overflow: hidden; box-shadow: 0 1px 5px rgba(0,0,0,0.65); }
.location-control .locate-control-btn { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; background: transparent; color: #87b025; border: none; padding: 0; margin: 0; cursor: pointer; outline: none; transition: color 0.3s; }
.location-control .locate-pin-svg { width: 20px; height: 20px; display: block; }
.location-control .pin-head { fill: currentColor; }
.location-control .pin-body { stroke: currentColor; stroke-width: 2.1; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.location-control .pin-core { fill: #1e1e1e; }
#hud-measure-popup { position: absolute; top: 50%; left: 50%; transform: translate(25px, -25px); background: rgba(30, 30, 30, 0.7) !important; border: 2px solid #87b025 !important; border-radius: 4px !important; color: #fff !important; box-shadow: 0 0 10px rgba(0,0,0,0.5); padding: 4px 8px; z-index: 1001; font-family: 'Consolas', monospace; font-size: 12px; font-weight: bold; pointer-events: none; display: none; white-space: nowrap; }
.dark-contrast-theme .side-label, .dark-contrast-theme #hud-measure-popup, .dark-contrast-theme .leaflet-control-scale-line, .dark-contrast-theme #mouse-coords, .dark-contrast-theme #zoom-display-map, .dark-contrast-theme #measure-btn-map, .dark-contrast-theme #fullscreen-btn-map, .dark-contrast-theme .leaflet-control-geocoder { border-color: #ffffff !important; }
.dark-contrast-theme #crosshair, .dark-contrast-theme #zoom-display-map, .dark-contrast-theme #measure-btn-map, .dark-contrast-theme #fullscreen-btn-map { color: #ffffff !important; }
.dark-contrast-theme .measuring-addon { border-right-color: rgba(255, 255, 255, 0.5); color: #fff; }
.dark-contrast-theme #measure-btn-map.active { background: #ffffff !important; color: #000000 !important; }
.dark-contrast-theme .leaflet-draw-toolbar a { filter: invert(100%) !important; }
.dark-contrast-theme .area-unit-control select { color: #ffffff !important; background-color: #1e1e1e !important; }
.dark-contrast-theme .location-control .locate-control-btn { color: #ffffff !important; }
#syncOverlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); z-index: 10000; justify-content: center; align-items: center; }
#syncModal { background: #1e1e1e; border: 2px solid #87b025; color: #fff; width: 90%; max-width: 420px; padding: 20px; border-radius: 8px; box-shadow: 0 0 20px rgba(135,176,37,0.3); }
#syncModal h3 { margin-top: 0; color: #87b025; text-align: center; }
.sync-info-row { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 14px; border-bottom: 1px solid #333; padding-bottom: 4px;}
.sync-info-row span:first-child { flex-shrink: 0; margin-right: 10px; }
.sync-info-row span:last-child { font-weight: bold; color: #ffeb3b; text-align: right; }
.progress-bar-bg { background: #333; width: 100%; height: 12px; border-radius: 6px; margin: 20px 0; overflow: hidden; }
#progressFill { background: #87b025; width: 0%; height: 100%; transition: width 0.1s; }
.modal-buttons { display: flex; gap: 10px; margin-top: 15px; }
.modal-buttons button { flex: 1; padding: 12px; cursor: pointer; border-radius: 4px; font-weight: bold; border: none; }
.btn-cancel { background: #444; color: #fff; }
.btn-confirm { background: #87b025; color: #fff; }
.overwrite-opt { margin-top: 10px; font-size: 13px; color: #aaa; display: flex; align-items: center; gap: 8px; }
.terrain-grid-label { background: transparent !important; border: none !important; color: #fff !important; font-family: 'Consolas', monospace !important; font-size: 10px !important; white-space: nowrap !important; text-align: center !important; pointer-events: none !important; }
.terrain-grid-label span { display: inline-block; border-radius: 3px; color: #fff; font-family: 'Consolas', monospace; white-space: nowrap; text-align: center; box-shadow: 0 0 3px rgba(0,0,0,0.4); }
</style>
</head>
<body>
<button id="menu-toggle" onclick="toggleMenu()">☰</button>
<div id="controls" class="hidden">
<div class="header-main"><span class="text-white">HIGH-RES</span> <span class="text-green">MAP GENERATOR</span></div>
<button id="linkSDBtn" onclick="linkSDCard()" aria-label="Link SD Card">📂 Link SD Card</button>
<div id="fsApiWarning" style="display:none; color:#ffb300; font-size:12px; margin-top:4px; background:rgba(30,30,30,0.7); border-radius:3px; padding:4px 6px;"></div>
<div class="toggle-container">
<span class="label" style="margin:0;">💾 Remember Settings</span>
<label class="switch">
<input type="checkbox" id="saveSettingsToggle" onchange="toggleSaveSettings()">
<span class="slider"></span>
</label>
</div>
<div>
<div class="label">Output Target Widget</div>
<select id="targetWidget" onchange="syncMapOptions(); saveSettings();">
<option value="b14ckyy">b14ckyy ETHOS Mapping Widget</option>
<option value="yaapu">Yaapu</option>
<option value="terrain">Terrain</option>
</select>
</div>
<div id="yaapuSubTargetDiv" style="display:none;">
<div class="label">Yaapu Sub-Target</div>
<select id="yaapuSubTarget" onchange="saveSettings();">
<option value="FrSkyTelemetryScript">Yaapu - ETHOS</option>
<option value="HorusMappingWidget">Yaapu - EdgeTX</option>
</select>
</div>
<div id="providerDiv">
<div class="label">Provider</div>
<select id="provider" onchange="syncMapOptions(); switchMapLayer(); saveSettings();">
<option value="OSM" selected>Standard Map (OSM) - Non High-Res</option>
<option value="ESRI">ESRI High-Res</option>
<option value="GOOGLE">Google High-Res</option>
<option value="MAPTILER">MapTiler High-Res</option>
</select>
</div>
<div id="terrainSourceDiv" style="display:none;">
<div class="label">Provider</div>
<select id="terrainSource" onchange="onTerrainSourceChange(); saveSettings();">
<option value="reearth" selected>Re:Earth</option>
<option value="srtm">Mapzen (NASA) SRTM</option>
</select>
<div id="terrainSourceNote" style="font-size:10px; color:#888; margin-top:4px; line-height:1.45;"></div>
</div>
<div id="mapTypeDiv"><div class="label">Map Type</div><select id="mapTypeChoice" onchange="switchMapLayer(); saveSettings();"></select></div>
<div id="maptilerKeyDiv" style="display:none;">
<div class="label">MapTiler API Key</div>
<input type="text" id="maptilerKey" placeholder="Paste your MapTiler API key" aria-label="MapTiler API Key" oninput="onMaptilerKeyInput();">
<div style="font-size:10px; color:#888; margin-top:4px;">Get a free key at <a href="https://www.maptiler.com/" target="_blank" style="color:#87b025;">maptiler.com</a></div>
</div>
<div id="googleWarning" class="google-warning">⚠️ Warning: Google might temporarily ban IPs after bulk downloads for 24 hours.</div>
<div id="yaapuWarning" class="yaapu-warning"></div>
<hr id="tileSettingsHr" style="width: 100%; border-color: #333; margin: 5px 0;">
<div id="projectNameDiv"><div class="label">Project Folder Name</div><input type="text" id="projectName" value="MyLocalField" maxlength="32" aria-label="Project Folder Name" oninput="if(this.value.length>32)this.value=this.value.slice(0,32);saveSettings();const status=document.getElementById('status');if(status&&status.innerText.startsWith('Error: Please enter a Project Folder Name.'))status.innerText='';"></div>
<div id="zoomRowDiv" class="zoom-row">
<div>
<div class="label">Min Zoom</div>
<select id="minZoom" onchange="triggerUpdate(); saveSettings();"></select>
</div>
<div>
<div class="label">Max Zoom</div>
<select id="maxZoom" onchange="triggerUpdate(); saveSettings();"></select>
</div>
</div>
<div id="hintMapTiles" style="font-size:10px; color:#666; margin:-2px 0 2px; font-style:italic;">Hint: Each extra zoom level ≈ 4× more tiles. Keep the area small or lower max zoom (when large area selected) to avoid long syncs and rate limits.</div>
<div id="hintTerrain" style="font-size:10px; color:#666; margin:-2px 0 2px; font-style:italic; display:none;">Hint: One .DAT file per 1°×1° grid square (~111 km). Data: NASA SRTM1 at 30m resolution. Ocean depths are clamped to 0m.</div>
<div id="terrainAltDiv" class="toggle-container" style="display:none;"><span class="label" style="margin:0;">📍 Live Altitude</span><label class="switch"><input type="checkbox" id="terrainAltToggle" onchange="toggleLiveAlt()"><span class="slider"></span></label></div>
<div id="terrainAltHint" style="font-size:10px; color:#ff9800; margin:-2px 0 2px; font-style:italic; display:none;">Altitude available after generating .DAT files — uses locally cached elevation data to avoid unnecessary server requests.</div>
<div id="zoomLockDiv" class="toggle-container"><span class="label" style="margin:0;">🔒 Zoom Lock</span><label class="switch"><input type="checkbox" id="zoomLockToggle" onchange="toggleZoomLock()"><span class="slider"></span></label></div>
<div id="syncDock">
<button id="syncBtn" onclick="startSync()" aria-label="Sync to SD Card">⚡ Sync to SD Card</button>
<div id="status" role="status" aria-live="polite">Search or zoom to your field...</div>
<div id="logArea" style="font-size:11px; color:#ffb300; margin-top:6px; min-height:18px; max-height:80px; overflow-y:auto; background:rgba(30,30,30,0.7); border-radius:3px; padding:4px 6px; display:none;"></div>
</div>
<button id="clearCacheBtn" onclick="clearHgtCacheUI()" style="display:none; padding:6px 10px; font-size:12px; background:#2a2a2a; color:#87b025; border:1px solid #444; border-radius:4px; cursor:pointer; width:100%;" aria-label="Clear HGT Cache"><span id="hgtCacheInfo"></span></button>
<button id="restoreBtn" onclick="restoreSettings()" style="padding: 6px 10px; font-size: 12px; background: #ff4444; color: white;" aria-label="Restore Settings">🔄 Restore Settings</button>
</div>
<div id="map" oncontextmenu="return false;">
<div id="crosshair">+</div>
<div id="hud-measure-popup">0m / 0ft</div>
<div id="syncDockMapHost"></div>
<div id="mouse-coords"><span id="measure-output" class="measuring-addon" style="display:none">0m / 0ft</span><span id="coords-output">Lat: 0.0000, Lng: 0.0000</span><span id="alt-output" style="display:none">Alt: —</span></div>
<div id="zoom-display-map">Zoom: 12</div>
<div id="measure-btn-map" onclick="toggleMeasure()">📏 Measure</div>
<div id="fullscreen-btn-map" onclick="toggleFullscreen()">⛶ Fullscreen</div>
</div>
<div id="syncOverlay">
<div id="syncModal">
<h3 id="modalHeader">Syncing to SD Card</h3>
<div id="syncInfo"></div>
<div id="overwriteSection" class="overwrite-opt"><input type="checkbox" id="overwriteToggle" style="width:16px; height:16px;"><label for="overwriteToggle">Force Overwrite (Update) existing tiles</label></div>
<div id="progressSection" style="display:none;">
<div class="progress-bar-bg"><div id="progressFill"></div></div>
<div id="downloadStatus" style="font-size: 11px; text-align: center; color: #aaa; margin-top: -15px; margin-bottom: 10px;">Ready...</div>
<div class="modal-buttons"><button class="btn-cancel" onclick="abortSync()">Cancel</button></div>
</div>
<div class="modal-buttons" id="modalActions">
<button class="btn-cancel" onclick="closeSync()">Cancel</button>
<button id="mainConfirmBtn" class="btn-confirm" onclick="handleConfirmClick()">Confirm Sync</button>
</div>
</div>
</div>
<canvas id="resizeCanvas" width="100" height="100" style="display:none;"></canvas>
<script>
// Feature detection for File System Access API
function checkFSAccessSupport() {
const btn = document.getElementById('linkSDBtn');
const warn = document.getElementById('fsApiWarning');
if (!window.showDirectoryPicker) {
if (btn) btn.disabled = true;
if (warn) {
warn.style.display = 'block';
warn.innerText = 'Your browser does not support SD card access. Use ZIP download instead.';
}
} else {
if (btn) btn.disabled = false;
if (warn) warn.style.display = 'none';
}
}
window.addEventListener('DOMContentLoaded', checkFSAccessSupport);
/*
* MapDownloader is a self-contained offline map export tool.
* The code below is organized into five main areas:
* 1. UI state and responsive layout handling
* 2. Map setup, layer switching, and drawing controls
* 3. Utility tools such as location lookup and measurement
* 4. Tile download, resize, retry, and export pipeline
* 5. App bootstrap and event wiring
*/
/* Persist the user's working configuration between sessions when enabled. */
function saveSettings() {
const saveToggle = document.getElementById('saveSettingsToggle');
if (!saveToggle) { appendLog('saveSettings: saveSettingsToggle not found', true); return; }
if (!saveToggle.checked) return;
const targetWidget = document.getElementById('targetWidget');
const provider = document.getElementById('provider');
const mapTypeChoice = document.getElementById('mapTypeChoice');
const projectName = document.getElementById('projectName');
const minZoom = document.getElementById('minZoom');
const maxZoom = document.getElementById('maxZoom');
if (!targetWidget || !provider || !mapTypeChoice || !projectName || !minZoom || !maxZoom) {
appendLog('saveSettings: One or more required elements not found', true);
return;
}
const settings = {
targetWidget: targetWidget.value,
provider: provider.value,
mapType: mapTypeChoice.value,
projectName: projectName.value,
minZoom: minZoom.value,
maxZoom: maxZoom.value,
mapCenter: map.getCenter(),
mapZoom: map.getZoom(),
yaapuSubTarget: document.getElementById('yaapuSubTarget') ? document.getElementById('yaapuSubTarget').value : 'FrSkyTelemetryScript',
terrainSource: document.getElementById('terrainSource') ? document.getElementById('terrainSource').value : 'reearth',
rememberOn: true
};
localStorage.setItem('mapGenSettings', JSON.stringify(settings));
}
/* Restore the previously saved session state and rebuild dependent UI selections. */
function loadSettings() {
const saved = localStorage.getItem('mapGenSettings');
if (!saved) return;
const s = JSON.parse(saved);
const saveToggle = document.getElementById('saveSettingsToggle');
if (!saveToggle) { appendLog('loadSettings: saveSettingsToggle not found', true); return; }
saveToggle.checked = s.rememberOn || false;
if (!s.rememberOn) return;
const targetWidget = document.getElementById('targetWidget');
const provider = document.getElementById('provider');
const mapTypeChoice = document.getElementById('mapTypeChoice');
const projectName = document.getElementById('projectName');
const minZoom = document.getElementById('minZoom');
const maxZoom = document.getElementById('maxZoom');
if (!targetWidget || !provider || !mapTypeChoice || !projectName || !minZoom || !maxZoom) {
appendLog('loadSettings: One or more required elements not found', true);
return;
}
if(s.targetWidget) targetWidget.value = s.targetWidget;
if(s.provider) provider.value = s.provider;
if(s.terrainSource) { const tsEl = document.getElementById('terrainSource'); if(tsEl) tsEl.value = s.terrainSource; }
syncMapOptions();
if(s.yaapuSubTarget) { const el = document.getElementById('yaapuSubTarget'); if(el) el.value = s.yaapuSubTarget; }
if(s.mapType) mapTypeChoice.value = s.mapType;
if(s.projectName) projectName.value = s.projectName;
if(s.minZoom) minZoom.value = s.minZoom;
if(s.maxZoom) maxZoom.value = s.maxZoom;
if(s.mapCenter) map.setView([s.mapCenter.lat, s.mapCenter.lng], s.mapZoom || 12);
switchMapLayer();
}
/* Enable or disable persistent settings storage from the UI toggle. */
function toggleSaveSettings() {
const saveToggle = document.getElementById('saveSettingsToggle');
if (!saveToggle) { appendLog('toggleSaveSettings: saveSettingsToggle not found', true); return; }
if (!saveToggle.checked) {
localStorage.removeItem('mapGenSettings');
} else {
saveSettings();
}
}
/* Restore settings to defaults immediately. */
function restoreSettings() {
localStorage.removeItem('mapGenSettings');
const saveToggle = document.getElementById('saveSettingsToggle');
const targetWidget = document.getElementById('targetWidget');
const provider = document.getElementById('provider');
const mapTypeChoice = document.getElementById('mapTypeChoice');
const projectName = document.getElementById('projectName');
const minZoom = document.getElementById('minZoom');
const maxZoom = document.getElementById('maxZoom');
if (!saveToggle || !targetWidget || !provider || !mapTypeChoice || !projectName || !minZoom || !maxZoom) {
appendLog('restoreSettings: One or more required elements not found', true);
return;
}
saveToggle.checked = false;
targetWidget.value = 'b14ckyy';
const yaapuSubTargetRestore = document.getElementById('yaapuSubTarget');
if (yaapuSubTargetRestore) yaapuSubTargetRestore.value = 'FrSkyTelemetryScript';
provider.value = 'OSM';
const terrainSourceRestore = document.getElementById('terrainSource');
if (terrainSourceRestore) terrainSourceRestore.value = 'reearth';
syncMapOptions();
mapTypeChoice.value = 'Street';
projectName.value = 'MyLocalField';
minZoom.value = '8';
maxZoom.value = '14';
map.setView([42.6977, 23.3219], 12);
switchMapLayer();
}
/* Responsive layout helpers keep the side panel usable on smaller screens. */
function isResponsiveMenuMode() {
return window.innerWidth <= 1024;
}
/* Keep the hamburger button visually attached to the sliding menu edge. */
function updateMenuTogglePosition() {
const controls = document.getElementById('controls');
const menuToggle = document.getElementById('menu-toggle');
if (!controls || !menuToggle) return;
if (!isResponsiveMenuMode() || controls.classList.contains('hidden')) {
menuToggle.style.left = '10px';
return;
}
menuToggle.style.left = `${controls.offsetWidth + 10}px`;
}
/*
* Align the floating sync dock with the bottom status controls and raise it
* only when it would collide with the scale or coordinate boxes.
*/
function updateSyncDockBottomAlignment() {
const map = document.getElementById('map');
const mapHost = document.getElementById('syncDockMapHost');
const coords = document.getElementById('mouse-coords');
const scaleLine = document.querySelector('.leaflet-control-scale-line');
if (!map || !mapHost || !coords) return;
if (!map.classList.contains('sync-dock-visible')) {
mapHost.style.bottom = '';
return;
}
const baselineBottom = parseFloat(getComputedStyle(coords).bottom) || 10;
mapHost.style.bottom = `${baselineBottom}px`;
const mapHostRect = mapHost.getBoundingClientRect();
const blockers = [coords, scaleLine].filter(Boolean);
const minGap = 8;
let requiredLift = 0;
blockers.forEach(blocker => {
const blockerRect = blocker.getBoundingClientRect();
const overlapsHorizontally = mapHostRect.left < blockerRect.right && mapHostRect.right > blockerRect.left;
const overlapsVertically = mapHostRect.top < blockerRect.bottom && mapHostRect.bottom > blockerRect.top;
if (overlapsHorizontally && overlapsVertically) {
const lift = mapHostRect.bottom - (blockerRect.top - minGap);
if (lift > requiredLift) requiredLift = lift;
}
});
if (requiredLift > 0) {
mapHost.style.bottom = `${baselineBottom + requiredLift}px`;
}
}
/* Move the sync action between the side panel and the map overlay based on layout mode. */
function updateSyncDockPlacement() {
const controls = document.getElementById('controls');
const map = document.getElementById('map');
const mapHost = document.getElementById('syncDockMapHost');
const syncDock = document.getElementById('syncDock');
if (!controls || !map || !mapHost || !syncDock) return;
if (isResponsiveMenuMode()) {
if (syncDock.parentElement !== mapHost) mapHost.appendChild(syncDock);
syncDock.classList.add('map-dock');
map.classList.add('sync-dock-visible');
updateSyncDockBottomAlignment();
} else {
if (syncDock.parentElement !== controls) controls.appendChild(syncDock);
syncDock.classList.remove('map-dock');
map.classList.remove('sync-dock-visible');
mapHost.style.bottom = '';
}
}
/*
* Compute extra bottom spacing for mobile browser chrome.
* The preferred source is VisualViewport measurement; browser-specific fallbacks
* remain in place for cases where the viewport API reports no occlusion.
*/
function updateViewportBottomOffset() {
const root = document.documentElement;
const vv = window.visualViewport;
const EDGE_ANDROID_PORTRAIT_FALLBACK = 140;
const EDGE_ANDROID_LANDSCAPE_FALLBACK = 64;
const CHROME_ANDROID_FALLBACK = 50;
if (!root) return;
if (document.fullscreenElement) {
root.style.setProperty('--viewport-bottom-offset', '0px');
return;
}
const ua = navigator.userAgent || '';
const isEdgeAndroid = /EdgA/i.test(ua) && /Android/i.test(ua);
const isChromeAndroid = /Chrome/i.test(ua) && /Android/i.test(ua) && !/EdgA/i.test(ua);
const isLandscape = window.matchMedia('(orientation: landscape)').matches;
let coordsOffset = 0;
let measuredBottomOcclusion = 0;
let offsetSource = 'none';
if (isResponsiveMenuMode()) {
if (vv) {
const layoutH = window.innerHeight || 0;
const visualBottom = (vv.offsetTop || 0) + (vv.height || 0);
measuredBottomOcclusion = Math.max(0, Math.round(layoutH - visualBottom));
}
if (measuredBottomOcclusion > 0) {
coordsOffset = measuredBottomOcclusion;
offsetSource = 'visualViewport';
} else if (isEdgeAndroid) {
coordsOffset = isLandscape ? EDGE_ANDROID_LANDSCAPE_FALLBACK : EDGE_ANDROID_PORTRAIT_FALLBACK;
offsetSource = isLandscape ? 'edge-landscape-fallback' : 'edge-portrait-fallback';
} else if (isChromeAndroid) {
coordsOffset = CHROME_ANDROID_FALLBACK;
offsetSource = 'chrome-fallback';
}
}
root.style.setProperty('--viewport-bottom-offset', `${coordsOffset}px`);
/*
* Temporary viewport debug overlay kept for future troubleshooting.
* Re-enable this block together with the matching CSS and HTML snippets above.
*/
/*
const debug = document.getElementById('viewport-debug');
if (debug) {
const vvHeight = vv ? Math.round(vv.height || 0) : 0;
const vvTop = vv ? Math.round(vv.offsetTop || 0) : 0;
const mode = isLandscape ? 'landscape' : 'portrait';
const browser = isEdgeAndroid ? 'EdgeA' : (isChromeAndroid ? 'ChromeA' : 'other');
debug.textContent = [
`mode: ${mode}`,
`browser: ${browser}`,
`vv.h/top: ${vvHeight}/${vvTop}`,
`occ.bottom: ${measuredBottomOcclusion}px`,
`offset: ${coordsOffset}px`,
`source: ${offsetSource}`
].join('\n');
}
*/
updateSyncDockBottomAlignment();
}
/* Toggle the responsive side panel manually from the hamburger button. */
function toggleMenu() {
document.getElementById('controls').classList.toggle('hidden');
updateMenuTogglePosition();
}
/* Re-evaluate all layout-dependent UI pieces whenever viewport state changes. */
function checkResponsiveMenu() {
if (isResponsiveMenuMode()) {
document.getElementById('controls').classList.add('hidden');
} else {
document.getElementById('controls').classList.remove('hidden');
}
updateMenuTogglePosition();
updateSyncDockPlacement();
updateViewportBottomOffset();
updateSyncDockBottomAlignment();
}
window.addEventListener('resize', checkResponsiveMenu);
window.addEventListener('orientationchange', checkResponsiveMenu);
document.addEventListener('fullscreenchange', checkResponsiveMenu);
if (window.visualViewport) {
window.visualViewport.addEventListener('resize', updateViewportBottomOffset);
window.visualViewport.addEventListener('scroll', updateViewportBottomOffset);
}
/* Enter or exit fullscreen map mode. */
function toggleFullscreen() {
if (!document.fullscreenElement) {
document.documentElement.requestFullscreen().catch(err => {
alert(`Error attempting to enable full-screen mode: ${err.message}`);
});
} else {
if (document.exitFullscreen) {
document.exitFullscreen();
}
}
}
/* Build the zoom selectors, respecting per-provider max zoom. */
const PROVIDER_MAX_ZOOM = { OSM: 19, ESRI: 20, GOOGLE: 20, MAPTILER: 20 };
const minZSelect = document.getElementById('minZoom'), maxZSelect = document.getElementById('maxZoom');
function rebuildZoomSelectors(maxZ) {
const prevMin = parseInt(minZSelect.value) || 8, prevMax = parseInt(maxZSelect.value) || 14;
minZSelect.innerHTML = ''; maxZSelect.innerHTML = '';
for (let i = 1; i <= maxZ; i++) {
minZSelect.add(new Option(i, i));
maxZSelect.add(new Option(i, i));
}
minZSelect.value = Math.min(prevMin, maxZ);
maxZSelect.value = Math.min(prevMax, maxZ);
}
rebuildZoomSelectors(20);
/* Initialize the Leaflet map and keep layout-sensitive UI synchronized with map changes. */
const map = L.map('map', {zoomControl: true, doubleClickZoom: false, scrollWheelZoom: true, tap: true}).setView([42.6977, 23.3219], 12);
map.on('zoomend moveend resize', updateSyncDockBottomAlignment);
/* Persist current map position whenever the user moves or zooms. */
map.on('moveend zoomend', saveSettings);
/* In compact mode, map interaction hides the menu to maximize usable map space. */
map.on('mousedown touchstart', () => {
if (isResponsiveMenuMode()) {
document.getElementById('controls').classList.add('hidden');
updateMenuTogglePosition();
}
});
/* Provider and overlay layers used by the different export modes. */
const osmTileBase = location.protocol === 'file:' ? 'https://{s}.tile.openstreetmap.fr/osmfr' : 'https://{s}.tile.openstreetmap.org';
const osmLayer = L.tileLayer(osmTileBase + '/{z}/{x}/{y}.png', { maxZoom: 20, attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors' });
const esriSatellite = L.tileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}', { maxZoom: 20, crossOrigin: true, attribution: '© <a href="https://www.esri.com/">Esri</a> — Sources: Esri, Maxar, Earthstar Geographics' });
const esriStreet = L.tileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}', { maxZoom: 20, crossOrigin: true, attribution: '© <a href="https://www.esri.com/">Esri</a> — Sources: Esri, Maxar, Earthstar Geographics' });
const esriLabels = L.tileLayer('https://server.arcgisonline.com/ArcGIS/rest/services/Reference/World_Transportation/MapServer/tile/{z}/{y}/{x}', { maxZoom: 20, crossOrigin: true, pane: 'shadowPane' });
const googleSatellite = L.tileLayer('https://mt1.google.com/vt/lyrs=s&x={x}&y={y}&z={z}', { maxZoom: 20, attribution: 'Map data © <a href="https://www.google.com/intl/en/help/terms_maps/">Google</a>' });
const googleStreet = L.tileLayer('https://mt1.google.com/vt/lyrs=m&x={x}&y={y}&z={z}', { maxZoom: 20, attribution: 'Map data © <a href="https://www.google.com/intl/en/help/terms_maps/">Google</a>' });
const googleHybrid = L.tileLayer('https://mt1.google.com/vt/lyrs=y&x={x}&y={y}&z={z}', { maxZoom: 20, attribution: 'Map data © <a href="https://www.google.com/intl/en/help/terms_maps/">Google</a>' });
/* MapTiler (requires a user-supplied API key). Map type -> MapTiler style id + image extension. */
const maptilerAttribution = '© <a href="https://www.maptiler.com/copyright/">MapTiler</a> © <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors';
function getMaptilerStyle(mapType) {
if (mapType === 'Satellite') return { style: 'satellite', ext: 'jpg' };
if (mapType === 'Hybrid') return { style: 'hybrid', ext: 'jpg' };
if (mapType === 'Outdoor') return { style: 'outdoor-v2', ext: 'png' };
if (mapType === 'Topo') return { style: 'topo-v2', ext: 'png' };
if (mapType === 'Winter') return { style: 'winter-v4', ext: 'png' };
return { style: 'streets-v2', ext: 'png' };
}
function getMaptilerKey() { const el = document.getElementById('maptilerKey'); return el ? el.value.trim() : ''; }
function buildMaptilerLayer(mapType) {
const s = getMaptilerStyle(mapType), key = getMaptilerKey();
return L.tileLayer(`https://api.maptiler.com/maps/${s.style}/{z}/{x}/{y}.${s.ext}?key=${key}`, { maxZoom: 20, crossOrigin: true, attribution: maptilerAttribution });
}
/* The MapTiler key is stored on its own so it persists regardless of Remember Settings and survives Restore Settings. */
function loadMaptilerKey() { const saved = localStorage.getItem('maptilerKey'); if (saved) { const el = document.getElementById('maptilerKey'); if (el) el.value = saved; } }
function onMaptilerKeyInput() {
const el = document.getElementById('maptilerKey');
if (el) localStorage.setItem('maptilerKey', el.value.trim());
if (document.getElementById('provider').value === 'MAPTILER') switchMapLayer();
const status = document.getElementById('status');
if (status && status.innerText.startsWith('Error: Please enter your MapTiler')) { status.innerText = ''; status.style.color = ''; }
}
/* Start in a safe default mode that does not depend on premium imagery providers. */
let currentLayer = osmLayer; currentLayer.addTo(map);
/* Refresh provider-dependent map type options and warning text in the sidebar. */
function syncMapOptions() {
const provider = document.getElementById('provider').value,
target = document.getElementById('targetWidget').value,
typeSelect = document.getElementById('mapTypeChoice'),
gWarning = document.getElementById('googleWarning'),
yWarning = document.getElementById('yaapuWarning');
if (target === 'terrain' && preTerrainMapType === null) {
preTerrainMapType = typeSelect.value;
}
let options = '<option value="Satellite">Satellite</option><option value="Street" selected>Street</option>';
if (provider !== "OSM") options += '<option value="Hybrid">Hybrid (Sat + Labels)</option>';
if (provider === "MAPTILER") options += '<option value="Outdoor">Outdoor</option><option value="Topo">Topo</option><option value="Winter">Winter</option>';
typeSelect.innerHTML = provider === "OSM" ? '<option value="Street" selected>Street</option>' : options;
gWarning.style.display = (provider === "GOOGLE" && target !== 'terrain') ? "block" : "none";
if (target === 'yaapu' && provider !== "GOOGLE") {
let yMsg = `Attention: Yaapu only supports specific folders. Provider ${provider} will be mapped to "Google" folder names.`;
if (provider === "MAPTILER") {
yMsg += ` Note: for Yaapu, Street/Outdoor/Topo/Winter all share one "GoogleMap" folder — export only one of them, or they will overwrite each other (Satellite and Hybrid get their own folders).`;
}
yWarning.innerText = yMsg;
yWarning.style.display = "block";
} else {
yWarning.style.display = "none";
}
const yaapuSubTargetDiv = document.getElementById('yaapuSubTargetDiv');
if (yaapuSubTargetDiv) yaapuSubTargetDiv.style.display = (target === 'yaapu') ? 'block' : 'none';
const maptilerKeyDiv = document.getElementById('maptilerKeyDiv');
if (maptilerKeyDiv) maptilerKeyDiv.style.display = (provider === 'MAPTILER' && target !== 'terrain') ? 'block' : 'none';
rebuildZoomSelectors(PROVIDER_MAX_ZOOM[provider] || 20);
updateTerrainMode();
}
/* SD card linking uses the File System Access API when the browser supports it. */
let sdHandle = null;
let lastTargetCategory = 'radio';
function getTargetCategory() { return document.getElementById('targetWidget').value === 'terrain' ? 'fc' : 'radio'; }
function getSDButtonLabel(linked) {
const isFc = getTargetCategory() === 'fc';
if (linked) return isFc ? '✅ FC SD Card Linked' : '✅ SD Card Linked';
return isFc ? '📂 Link FC SD Card' : '📂 Link SD Card';
}
async function linkSDCard() {
if (!window.showDirectoryPicker) {
alert('Your browser does not support SD card access. Use ZIP download instead.');
return;
}
try {
sdHandle = await window.showDirectoryPicker({ mode: 'readwrite' });
const btn = document.getElementById('linkSDBtn');
btn.innerText = getSDButtonLabel(true);
btn.classList.add('linked');
} catch (err) {}
}
/* Reset the SD card UI if permission is lost or the directory becomes inaccessible. */
function resetSDButton() { sdHandle = null; const btn = document.getElementById('linkSDBtn'); btn.innerText = getSDButtonLabel(false); btn.classList.remove('linked'); }
/* Poll the directory handle so stale permissions are detected quickly. */
setInterval(async () => {
if (!sdHandle) return;
try { await sdHandle.values().next(); } catch (err) { resetSDButton(); }
}, 1500);
/* Toggle all interactive zoom mechanisms together from one checkbox. */
function toggleZoomLock() { const isLocked = document.getElementById('zoomLockToggle').checked; const toggle = isLocked ? 'disable' : 'enable'; ['scrollWheelZoom', 'doubleClickZoom', 'touchZoom', 'boxZoom', 'keyboard'].forEach(m => map[m][toggle]()); if (map.zoomControl) map.zoomControl[toggle](); }
/* Middle-mouse drag emulates a pan tool on desktop. */
const mapContainer = document.getElementById('map');
let isMiddleDragging = false, lastMousePos = { x: 0, y: 0 };
mapContainer.addEventListener('mousedown', e => { if (e.button === 1) { isMiddleDragging = true; lastMousePos = { x: e.clientX, y: e.clientY }; mapContainer.style.cursor = 'grabbing'; e.preventDefault(); } });
window.addEventListener('mousemove', e => { if (isMiddleDragging) { map.panBy([lastMousePos.x - e.clientX, lastMousePos.y - e.clientY], { animate: false }); lastMousePos = { x: e.clientX, y: e.clientY }; } });
window.addEventListener('mouseup', e => { if (e.button === 1 && isMiddleDragging) { isMiddleDragging = false; mapContainer.style.cursor = ''; } });
/* Right-click is repurposed to cancel measure/draw actions or clear the active area box. */
mapContainer.addEventListener('contextmenu', e => {
e.preventDefault(); if (isMeasuring) { toggleMeasure(); return; }
if (drawnItems.getLayers().length > 0) { drawnItems.clearLayers(); if (labels.width) { map.removeLayer(labels.width); map.removeLayer(labels.height); labels = {width:null,height:null}; } document.getElementById('status').innerText = "Area removed."; if (isTerrainMode()) updateTerrainGrid(); drawControl._toolbars.draw._modes.rectangle.handler.enable(); return; }
const handler = drawControl._toolbars.draw._modes.rectangle.handler; if (handler.enabled()) handler.disable();
});
/* Swap base layers and theme colors to match the active provider/map-type combination. */
function switchMapLayer() {
const provider = document.getElementById('provider').value, type = document.getElementById('mapTypeChoice').value;
if (currentLayer) map.removeLayer(currentLayer);
if (map.hasLayer(esriLabels)) map.removeLayer(esriLabels);
if (provider === 'MAPTILER') {
currentLayer = buildMaptilerLayer(type);
if (type === 'Satellite' || type === 'Hybrid') mapContainer.classList.add('dark-contrast-theme');
else mapContainer.classList.remove('dark-contrast-theme');
}
else if (type === 'Satellite') {
currentLayer = (provider === 'ESRI' ? esriSatellite : (provider === 'GOOGLE' ? googleSatellite : osmLayer));
mapContainer.classList.add('dark-contrast-theme');
}
else if (type === 'Hybrid') {
if (provider === 'ESRI') {
currentLayer = esriSatellite;
esriLabels.addTo(map);
} else {
currentLayer = googleHybrid;
}
mapContainer.classList.add('dark-contrast-theme');
}
else {
if (provider === 'OSM') currentLayer = osmLayer;
else if (provider === 'ESRI') currentLayer = esriStreet;
else currentLayer = googleStreet;
mapContainer.classList.remove('dark-contrast-theme');
}
currentLayer.addTo(map);
}
/* Register core Leaflet controls: search, scale, rectangle drawing, units, and location. */
const geocoder = L.Control.geocoder({ defaultMarkGeocode: false, position: 'topleft', placeholder: "SEARCH" }).on('markgeocode', e => map.fitBounds(e.geocode.bbox)).addTo(map);
let scaleControl = L.control.scale({ imperial: false, metric: true, position: 'bottomleft' });
scaleControl.addTo(map);
const drawnItems = new L.FeatureGroup(); map.addLayer(drawnItems);
const drawControl = new L.Control.Draw({ draw: { rectangle: { shapeOptions: { color: '#ff0000', weight: 2, fillOpacity: 0.1 } }, polyline: false, polygon: false, circle: false, marker: false, circlemarker: false }, edit: { featureGroup: drawnItems, remove: false } });
map.addControl(drawControl);
/* Override Leaflet Draw's built-in area formatter so the live tooltip
respects the user-selected unit instead of always showing hectares. */
L.GeometryUtil.readableArea = function(area, isMetric) {
const unit = (typeof currentAreaUnit !== 'undefined') ? currentAreaUnit : 'km2';
switch(unit) {
case 'km2': return (area / 1000000).toFixed(2) + ' km²';
case 'mi2': return (area / 2589988.11).toFixed(2) + ' mi²';
case 'ha': return (area / 10000).toFixed(2) + ' ha';
case 'acre': return (area / 4046.86).toFixed(2) + ' acre';
default: return area.toFixed(0) + ' m²';
}
};
const AreaUnitControl = L.Control.extend({
options: { position: 'topleft' },
onAdd: function(map) {
const div = L.DomUtil.create('div', 'leaflet-bar leaflet-control area-unit-control');
div.innerHTML = `
<select id="areaUnitSelect" onchange="changeAreaUnit()">
<option value="km2" selected>km²</option>
<option value="mi2">mi²</option>
<option value="ha">ha</option>
<option value="acre">acre</option>
</select>`;
L.DomEvent.disableClickPropagation(div);
return div;
}
});
map.addControl(new AreaUnitControl());
const LocationControl = L.Control.extend({
options: { position: 'topleft' },
onAdd: function(map) {
const div = L.DomUtil.create('div', 'leaflet-bar leaflet-control location-control');
div.innerHTML = `
<button id="locate-btn-control" class="locate-control-btn" title="Find my location" aria-label="Find my location" onclick="findCurrentLocation()">
<svg class="locate-pin-svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false">
<path class="pin-body" d="M12 21s7-6.2 7-11a7 7 0 1 0-14 0c0 4.8 7 11 7 11z"></path>
<circle class="pin-head" cx="12" cy="10" r="3.7"></circle>
<circle class="pin-core" cx="12" cy="10" r="1.35"></circle>
</svg>
</button>`;
L.DomEvent.disableClickPropagation(div);
return div;
}
});
map.addControl(new LocationControl());
/* Tile math and area formatting helpers support export estimates and folder generation. */
let labels = { width: null, height: null };
function lon2tile(lon, zoom) { return Math.floor((lon + 180) / 360 * Math.pow(2, zoom)); }
function lat2tile(lat, zoom) { return Math.floor((1 - Math.log(Math.tan(lat * Math.PI / 180) + 1 / Math.cos(lat * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, zoom)); }
function calculateTiles(bounds, minZ, maxZ) { let total = 0; for (let z = minZ; z <= maxZ; z++) { total += (Math.abs(lon2tile(bounds.getWest(), z) - lon2tile(bounds.getEast(), z)) + 1) * (Math.abs(lat2tile(bounds.getSouth(), z) - lat2tile(bounds.getNorth(), z)) + 1); } return total; }
let currentAreaUnit = 'km2';
/* Convert raw meters into the currently selected linear display unit. */
function formatDistance(meters) {
switch(currentAreaUnit) {
case 'km2': return meters >= 1000 ? (meters / 1000).toFixed(2) + ' km' : Math.round(meters) + ' m';
case 'mi2': { const mi = meters / 1609.344; return mi >= 1 ? mi.toFixed(2) + ' mi' : Math.round(meters * 3.28084) + ' ft'; }
case 'ha': return meters >= 1000 ? (meters / 1000).toFixed(2) + ' km' : Math.round(meters) + ' m';
case 'acre': { const mi = meters / 1609.344; return mi >= 1 ? mi.toFixed(2) + ' mi' : Math.round(meters * 3.28084) + ' ft'; }
default: return meters >= 1000 ? (meters / 1000).toFixed(2) + ' km' : Math.round(meters) + ' m';
}
}
/* Convert raw square meters into the currently selected display unit. */
function formatArea(sqMeters) {
if (sqMeters === 0) return "0.00 " + currentAreaUnit;
switch(currentAreaUnit) {
case 'km2': return (sqMeters / 1000000).toFixed(2) + ' km²';
case 'mi2': return (sqMeters / 2589988.11).toFixed(2) + ' mi²';
case 'ha': return (sqMeters / 10000).toFixed(2) + ' ha';
case 'acre': return (sqMeters / 4046.86).toFixed(2) + ' acre';
default: return sqMeters.toFixed(0) + ' m²';
}
}
window.changeAreaUnit = function() {
currentAreaUnit = document.getElementById('areaUnitSelect').value;
map.removeControl(scaleControl);
const useImperial = (currentAreaUnit === 'mi2' || currentAreaUnit === 'acre');
scaleControl = L.control.scale({ imperial: useImperial, metric: !useImperial, position: 'bottomleft' });
scaleControl.addTo(map);
triggerUpdate();
};
/* Update side labels, area readout, and tile estimate for the current selection box. */
function updateSideLabels(layer) {
const latlngs = layer.getLatLngs()[0], bounds = layer.getBounds(), minZ = parseInt(document.getElementById('minZoom').value), maxZ = parseInt(document.getElementById('maxZoom').value), area = L.GeometryUtil.geodesicArea(latlngs), tiles = calculateTiles(bounds, minZ, maxZ);
const wM = latlngs[0].distanceTo(latlngs[1]), hM = latlngs[1].distanceTo(latlngs[2]), wS = formatDistance(wM), hS = formatDistance(hM);
const midT = L.latLng((latlngs[0].lat + latlngs[1].lat)/2, (latlngs[0].lng + latlngs[1].lng)/2), midL = L.latLng((latlngs[1].lat + latlngs[2].lat)/2, (latlngs[1].lng + latlngs[2].lng)/2);
if (!labels.width) { labels.width = L.marker(midT, { icon: L.divIcon({ className: 'side-label', html: wS }) }).addTo(map); labels.height = L.marker(midL, { icon: L.divIcon({ className: 'side-label', html: hS }) }).addTo(map); }
else { labels.width.setLatLng(midT).setIcon(L.divIcon({ className: 'side-label', html: wS })); labels.height.setLatLng(midL).setIcon(L.divIcon({ className: 'side-label', html: hS })); }
const maxZoomTiles = calculateTiles(bounds, maxZ, maxZ);
const status = document.getElementById('status');
if (status) {
let html = `<span style="color:#ffeb3b">Area: ${formatArea(area)}</span><br><span style="color:#87b025">Total Sync Tiles (100x100 JPEG): ${tiles.toLocaleString()}</span>`;
if (maxZoomTiles < 64) {
html += `<br><span style="color:#ff5252">⚠️ Low tile coverage at max zoom (${maxZoomTiles} tiles). Consider increasing max zoom.</span>`;
}
status.innerHTML = html;
status.style.color = '#ffeb3b';
}
}
/* Refresh derived map UI whenever the area or zoom range changes. */
function triggerUpdate() { if(drawnItems.getLayers().length > 0) updateSideLabels(drawnItems.getLayers()[0]); if (isTerrainMode()) { updateTerrainGrid(); updateTerrainStatus(); } document.getElementById('zoom-display-map').innerText = `Zoom: ${map.getZoom()}`; }
map.on(L.Draw.Event.CREATED, e => {
// Remove error message when rectangle is drawn
const status = document.getElementById('status');
if (status && status.innerText.startsWith('Error:')) {
status.innerText = '';
status.style.color = '#ffeb3b';
}
drawnItems.clearLayers();
drawnItems.addLayer(e.layer);
updateSideLabels(e.layer);
if (isTerrainMode()) { updateTerrainGrid(); updateTerrainStatus(); }
});
map.on('draw:editmove draw:editresize editdrag zoomend moveend', triggerUpdate);
/* Update the Leaflet Draw tooltip to use the user's selected metric system while drawing. */
map.on('draw:drawstop draw:editstop editmove editresize', () => {
const tooltips = document.querySelectorAll('.leaflet-tooltip-pane .leaflet-tooltip');
tooltips.forEach(tooltip => {
const text = tooltip.innerText || tooltip.textContent;
const match = text.match(/Area:\s*([\d.]+)\s*(m²|ha|km²)/i);
if (match) {
const value = parseFloat(match[1]);
const unit = match[2].toLowerCase();
let sqMeters;
if (unit === 'ha') sqMeters = value * 10000;
else if (unit === 'm²') sqMeters = value;
else if (unit === 'km²') sqMeters = value * 1000000;
tooltip.innerText = `Area: ${formatArea(sqMeters)}`;
}
});
});
/* Measurement and geolocation tools live outside the export pipeline but share the same map UI. */
let isMeasuring = false, measureStart = null, measureLine = null;
const locationMarkerIcon = L.divIcon({
className: 'location-marker',
html: `<svg width="25" height="41" viewBox="0 0 25 41" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
<path d="M12.5 0.8C6.1 0.8 0.9 6 0.9 12.4c0 8.8 11.6 27.1 11.6 27.1s11.6-18.3 11.6-27.1C24.1 6 18.9 0.8 12.5 0.8z" fill="#87b025" stroke="#ffffff" stroke-width="1.2"/>
<circle cx="12.5" cy="12.4" r="4.4" fill="#1e1e1e" stroke="#ffffff" stroke-width="0.8"/>
</svg>`,
iconSize: [25, 41],
iconAnchor: [12, 41],
popupAnchor: [1, -34]
});
let locationMarker = null;
/* Query the browser permission state when supported so location errors are more actionable. */
async function getGeolocationPermissionState() {
if (!navigator.permissions || !navigator.permissions.query) return 'unknown';
try {
const result = await navigator.permissions.query({ name: 'geolocation' });
return result.state || 'unknown';
} catch {
return 'unknown';
}
}
/* Center the map on the browser's current location and keep a reusable marker there. */
async function findCurrentLocation() {
if (!navigator.geolocation) {
alert('Geolocation is not supported by this browser.');
return;
}
if (!window.isSecureContext) {
alert('Location requires a secure context (HTTPS or localhost). Open this page via HTTPS to use geolocation.');
return;
}
const permissionState = await getGeolocationPermissionState();
if (permissionState === 'denied') {
alert('Location access is blocked for this site. Please allow Location permission for this site and Edge app settings, then try again.');
return;
}
navigator.geolocation.getCurrentPosition(
position => {
const lat = position.coords.latitude;
const lng = position.coords.longitude;
const latLng = [lat, lng];
map.setView(latLng, map.getZoom(), { animate: true });
if (locationMarker) {
locationMarker.setIcon(locationMarkerIcon);
locationMarker.setLatLng(latLng);
} else {
locationMarker = L.marker(latLng, { icon: locationMarkerIcon }).addTo(map);
}
locationMarker.bindPopup(`My location<br>Lat: ${lat.toFixed(5)}, Lng: ${lng.toFixed(5)}`).openPopup();
map.setView(latLng, map.getZoom(), { animate: true });
},
error => {
let msg = 'Unable to get your location.';
if (error.code === error.PERMISSION_DENIED) {
const ua = navigator.userAgent || '';
const isMobileEdge = /EdgA/i.test(ua);
const browserHint = isMobileEdge
? 'Edge mobile may block prompts if site/app permission was denied before. In Edge: Site permissions > Location = Allow, and in Android app permissions: Edge > Location = Allow.'
: 'Check site Location permission and device app/location settings.';
msg = `Location permission denied. ${browserHint}`;
}
else if (error.code === error.POSITION_UNAVAILABLE) msg = 'Location unavailable.';
else if (error.code === error.TIMEOUT) msg = 'Location request timed out.';