From 069d3c1c81d71042706372df153254487a765dfc Mon Sep 17 00:00:00 2001
From: historia <[not public]>
Date: Mon, 29 Jun 2026 22:31:11 -0400
Subject: feat: wip web admin for mapping and crud

---
 internal/admin/static/colorpicker.js | 197 +++++++++++++++++++++++++++++++++++
 1 file changed, 197 insertions(+)
 create mode 100644 internal/admin/static/colorpicker.js

(limited to 'internal/admin/static/colorpicker.js')

diff --git a/internal/admin/static/colorpicker.js b/internal/admin/static/colorpicker.js
new file mode 100644
index 0000000..9431e83
--- /dev/null
+++ b/internal/admin/static/colorpicker.js
@@ -0,0 +1,197 @@
+window.xtermToRGB = function(idx) {
+  idx = parseInt(idx);
+  if (idx < 0 || idx > 255) return [0,0,0];
+  if (idx < 16) {
+    var a = [[0,0,0],[170,0,0],[0,170,0],[170,170,0],[0,0,170],[170,0,170],[0,170,170],[170,170,170],
+             [85,85,85],[255,85,85],[85,255,85],[255,255,85],[85,85,255],[255,85,255],[85,255,255],[255,255,255]];
+    return a[idx];
+  }
+  if (idx < 232) {
+    var n = idx - 16;
+    var cube = [0,95,135,175,215,255];
+    return [cube[Math.floor(n/36)], cube[Math.floor((n%36)/6)], cube[n%6]];
+  }
+  var g = 8 + (idx-232)*10;
+  return [g,g,g];
+};
+
+window.xtermIdxToHex = function(idx) {
+  idx = parseInt(idx) || 0;
+  return idx.toString(16).toUpperCase().padStart(2,'0');
+};
+
+window.hexToXtermIdx = function(hex) {
+  return parseInt(hex, 16);
+};
+
+window.xtermToCss = function(idx) {
+  var rgb = xtermToRGB(idx);
+  return '#' + ((rgb[0]<<16)|(rgb[1]<<8)|rgb[2]).toString(16).padStart(6,'0').toUpperCase();
+};
+
+window.resolveColor = function(v) {
+  if (!v) return '#3a3a6a';
+  v = v.toUpperCase().replace(/[^0-9A-F]/g,'');
+  if (v.length === 2) return xtermToCss(parseInt(v,16));
+  return '#' + v.substring(0,6).padEnd(6,'0');
+};
+
+window.hexLuminance = function(hex) {
+  hex = hex.replace('#','').toUpperCase();
+  var r = parseInt(hex.substring(0,2),16)/255;
+  var g = parseInt(hex.substring(2,4),16)/255;
+  var b = parseInt(hex.substring(4,6),16)/255;
+  return 0.299*r + 0.587*g + 0.114*b;
+};
+
+window.cssToXtermIdx = function(css) {
+  css = css.replace('#','').toUpperCase();
+  if (css.length < 6) return 0;
+  var tr = parseInt(css.substring(0,2),16);
+  var tg = parseInt(css.substring(2,4),16);
+  var tb = parseInt(css.substring(4,6),16);
+  var best = 0, bestDist = Infinity;
+  for (var i = 0; i < 256; i++) {
+    var srgb = xtermToRGB(i);
+    var dr = tr-srgb[0], dg = tg-srgb[1], db = tb-srgb[2];
+    var d = dr*dr + dg*dg + db*db;
+    if (d < bestDist) { bestDist = d; best = i; }
+  }
+  return best;
+};
+
+(function() {
+  var pickerEl = null, boundInput = null, boundSwatch = null;
+
+  function ensurePicker() {
+    if (pickerEl) return;
+    pickerEl = document.createElement('div');
+    pickerEl.id = '__cp_popover';
+    pickerEl.style.cssText = 'display:none;position:fixed;z-index:200;background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:8px;box-shadow:0 4px 20px rgba(0,0,0,.5);min-width:280px';
+    pickerEl.innerHTML = buildPickerHTML();
+    document.body.appendChild(pickerEl);
+
+    pickerEl.addEventListener('click', function(e) {
+      var sw = e.target.closest('.cp-swatch');
+      if (sw) {
+        var idx = parseInt(sw.getAttribute('data-idx'));
+        var hex = xtermIdxToHex(idx);
+        if (boundInput) boundInput.value = hex;
+        if (boundSwatch) boundSwatch.style.background = xtermToCss(idx);
+        if (boundInput) boundInput.dispatchEvent(new Event('input', {bubbles:true}));
+        hidePicker();
+      }
+    });
+  }
+
+  function buildPickerHTML() {
+    var h = '<div style="display:flex;align-items:center;gap:8px;margin-bottom:6px">';
+    h += '<span id="__cp_preview" class="color-swatch" style="width:24px;height:24px;flex-shrink:0"></span>';
+    h += '<input id="__cp_hex" style="flex:1;padding:3px 6px;font-size:11px;background:var(--input-bg);color:var(--text);border:1px solid var(--input-border);border-radius:3px;font-family:monospace;text-transform:uppercase" maxlength="2" placeholder="00">';
+    h += '<button id="__cp_close" style="background:none;border:none;color:#aaa;cursor:pointer;font-size:14px;padding:0 4px">&times;</button>';
+    h += '</div>';
+    h += '<div class="cp-grid">';
+    for (var i = 0; i < 256; i++) {
+      var css = xtermToCss(i);
+      h += '<div class="cp-swatch" data-idx="'+i+'" style="background:'+css+'" title="'+xtermIdxToHex(i)+' ('+i+')"></div>';
+    }
+    h += '</div>';
+    return h;
+  }
+
+  window.showColorPicker = function(inputEl, swatchEl) {
+    ensurePicker();
+    boundInput = inputEl;
+    boundSwatch = swatchEl;
+
+    var raw = (inputEl.value || '').toUpperCase().replace(/[^0-9A-F]/g,'');
+    var idx;
+    if (raw.length === 2) {
+      idx = parseInt(raw, 16);
+    } else if (raw.length >= 6) {
+      idx = cssToXtermIdx(raw);
+    } else {
+      idx = parseInt(raw, 16) || 0;
+    }
+    var hex = xtermIdxToHex(idx);
+    inputEl.value = hex;
+    if (swatchEl) swatchEl.style.background = xtermToCss(idx);
+
+    $('#__cp_hex').value = hex;
+    $('#__cp_preview').style.background = xtermToCss(idx);
+    updatePickerSelection(idx);
+
+    var rect = inputEl.getBoundingClientRect();
+    pickerEl.style.display = 'block';
+    var pw = pickerEl.offsetWidth;
+    var left = rect.left;
+    if (left + pw > window.innerWidth - 10) left = Math.max(10, window.innerWidth - pw - 10);
+    pickerEl.style.left = left + 'px';
+    pickerEl.style.top = (rect.bottom + 4) + 'px';
+
+    $('#__cp_hex').oninput = function() {
+      var v = this.value.toUpperCase().replace(/[^0-9A-F]/g,'').substring(0,2);
+      this.value = v;
+      if (v.length === 2) {
+        var i = parseInt(v, 16);
+        inputEl.value = v;
+        if (swatchEl) swatchEl.style.background = xtermToCss(i);
+        updatePickerSelection(i);
+      }
+    };
+
+    $('#__cp_close').onclick = hidePicker;
+  };
+
+  function updatePickerSelection(idx) {
+    var swatches = document.querySelectorAll('.cp-swatch');
+    for (var i = 0; i < swatches.length; i++) swatches[i].classList.remove('selected');
+    var s = document.querySelector('.cp-swatch[data-idx="'+idx+'"]');
+    if (s) s.classList.add('selected');
+  }
+
+  window.hideColorPicker = hidePicker;
+  function hidePicker() {
+    if (pickerEl) pickerEl.style.display = 'none';
+    boundInput = null; boundSwatch = null;
+  }
+
+  document.addEventListener('click', function(e) {
+    if (!pickerEl || pickerEl.style.display === 'none') return;
+    if (!pickerEl.contains(e.target) && e.target !== boundInput && e.target !== (boundSwatch || {}).parentElement) {
+      hidePicker();
+    }
+  });
+
+  window.bindColorField = function(fieldEl) {
+    var input = fieldEl.querySelector('input[type=text]') || fieldEl.querySelector('input:not([type])');
+    var swatch = fieldEl.querySelector('.color-swatch');
+    if (!input) return;
+
+    fieldEl.addEventListener('click', function(e) {
+      if (e.target === input || e.target === swatch) {
+        showColorPicker(input, swatch);
+      }
+    });
+
+    var raw = (input.value || '').toUpperCase().replace(/[^0-9A-F]/g,'');
+    if (raw.length === 2) {
+      if (swatch) swatch.style.background = xtermToCss(parseInt(raw, 16));
+    } else if (raw.length >= 6) {
+      var idx = cssToXtermIdx(raw);
+      input.value = xtermIdxToHex(idx);
+      if (swatch) swatch.style.background = xtermToCss(idx);
+    }
+
+    input.addEventListener('input', function() {
+      var v = this.value.toUpperCase().replace(/[^0-9A-F]/g,'').substring(0,2);
+      this.value = v;
+      if (v.length === 2 && swatch) {
+        swatch.style.background = xtermToCss(parseInt(v, 16));
+      }
+    });
+    input.setAttribute('maxlength', '2');
+    input.setAttribute('placeholder', '00');
+    input.style.textTransform = 'uppercase';
+  };
+})();
-- 
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