New custom palettes editor (#5010)

* full refactoring, added live preview, better minifying in cdata.js
* update main UI buttons, support for gaps in cpal files, cpal UI cleanup
* fixed some layout issues, added un-ordered cpal deletion
* changed to tab indentation, paste button border color now holds stored color
* fix preview to work properly and some other fixes in UI
* always unfreeze
* new approach to loading iro.js, add harmonic random palette, many fixes.
* decoupling iro.j, update UI of cpal.htm
- load iro.js sequentially
- no parallel requests in cpal.htm
- update UI buttons
- fix showing sequential loading of palettes (using opacity)
- better UX for mobile (larger markers, larger editor)
- various fixes
* small change to buttons
* load iro.js dynamically, remove iro.js from index.htm, revert changes to cdata.js
* improved visibility for very dark/black palettes and markers

.gitignore

@@ -25,3 +25,4 @@ wled-update.sh
 /wled00/Release
 /wled00/wled00.ino.cpp
 /wled00/html_*.h
+/wled00/js_*.h

tools/cdata.js

@@ -26,7 +26,7 @@ const packageJson = require("../package.json");
 // Export functions for testing
 module.exports = { isFileNewerThan, isAnyFileInFolderNewerThan };
 
-const output = ["wled00/html_ui.h", "wled00/html_pixart.h", "wled00/html_cpal.h", "wled00/html_edit.h", "wled00/html_pxmagic.h", "wled00/html_pixelforge.h", "wled00/html_settings.h", "wled00/html_other.h"]
+const output = ["wled00/html_ui.h", "wled00/html_pixart.h", "wled00/html_cpal.h", "wled00/html_edit.h", "wled00/html_pxmagic.h", "wled00/html_pixelforge.h", "wled00/html_settings.h", "wled00/html_other.h", "wled00/js_iro.h"]
 
 // \x1b[34m is blue, \x1b[36m is cyan, \x1b[0m is reset
 const wledBanner = `
@@ -257,6 +257,19 @@ writeHtmlGzipped("wled00/data/pxmagic/pxmagic.htm", "wled00/html_pxmagic.h", 'px
 writeHtmlGzipped("wled00/data/pixelforge/pixelforge.htm", "wled00/html_pixelforge.h", 'pixelforge', false); // do not inline css
 //writeHtmlGzipped("wled00/data/edit.htm", "wled00/html_edit.h", 'edit');
 
+writeChunks(
+  "wled00/data/",
+  [
+    {
+      file: "iro.js",
+      name: "JS_iro",
+      method: "gzip",
+      filter: "plain", // no minification, it is already minified
+      mangle: (s) => s.replace(/^\/\*![\s\S]*?\*\//, '') // remove license comment at the top
+    }
+  ],
+  "wled00/js_iro.h"
+);
 
 writeChunks(
   "wled00/data",

usermods/audioreactive/audio_reactive.cpp

@@ -1742,14 +1742,14 @@ class AudioReactive : public Usermod {
         }
 #endif
       }
-      if (root.containsKey(F("rmcpal")) && root[F("rmcpal")].as<bool>()) {
+      if (palettes > 0 && root.containsKey(F("rmcpal"))) {
         // handle removal of custom palettes from JSON call so we don't break things
         removeAudioPalettes();
       }
     }
 
     void onStateChange(uint8_t callMode) override {
-      if (initDone && enabled && addPalettes && palettes==0 && customPalettes.size()<10) {
+      if (initDone && enabled && addPalettes && palettes==0 && customPalettes.size()<WLED_MAX_CUSTOM_PALETTES) {
         // if palettes were removed during JSON call re-add them
         createAudioPalettes();
       }

wled00/colors.cpp

@@ -249,12 +249,13 @@ void loadCustomPalettes() {
   byte tcp[72]; //support gradient palettes with up to 18 entries
   CRGBPalette16 targetPalette;
   customPalettes.clear(); // start fresh
+  StaticJsonDocument<1536> pDoc; // barely enough to fit 72 numbers -> TODO: current format uses 214 bytes max per palette, why is this buffer so large?
+  unsigned emptyPaletteGap = 0; // count gaps in palette files to stop looking for more (each exists() call takes ~5ms)
   for (int index = 0; index < WLED_MAX_CUSTOM_PALETTES; index++) {
     char fileName[32];
     sprintf_P(fileName, PSTR("/palette%d.json"), index);
-
-    StaticJsonDocument<1536> pDoc; // barely enough to fit 72 numbers
     if (WLED_FS.exists(fileName)) {
+      emptyPaletteGap = 0; // reset gap counter if file exists
       DEBUGFX_PRINTF_P(PSTR("Reading palette from %s\n"), fileName);
       if (readObjectFromFile(fileName, nullptr, &pDoc)) {
         JsonArray pal = pDoc[F("palette")];
@@ -288,7 +289,8 @@ void loadCustomPalettes() {
         }
       }
     } else {
-      break;
+      emptyPaletteGap++;
+      if (emptyPaletteGap > WLED_MAX_CUSTOM_PALETTE_GAP) break; // stop looking for more palettes
     }
   }
 }

wled00/const.h

@@ -15,6 +15,7 @@ constexpr size_t FIXED_PALETTE_COUNT = DYNAMIC_PALETTE_COUNT + FASTLED_PALETTE_C
 #else
   #define WLED_MAX_CUSTOM_PALETTES 10 // ESP8266: limit custom palettes to 10
 #endif
+#define WLED_MAX_CUSTOM_PALETTE_GAP 20 // max number of empty palette files in a row before stopping to look for more (20 takes 100ms)
 
 // You can define custom product info from build flags.
 // This is useful to allow API consumer to identify what type of WLED version

wled00/data/index.htm

@@ -10,7 +10,7 @@
 	<title>WLED</title>
 	<link rel="stylesheet" href="index.css">
 </head>
-<body onload="onLoad()">
+<body>
 
 <div id="cv" class="overlay">Loading WLED UI...</div>
 <noscript><div class="overlay" style="opacity:1;">Sorry, WLED UI needs JavaScript!</div></noscript>
@@ -129,8 +129,7 @@
 		<div style="padding: 8px 0;" id="btns">
 			<button class="btn btn-xs" title="File editor" type="button" id="edit" onclick="window.location.href=getURL('/edit')"><i class="icons btn-icon">&#xe2c6;</i></button>
 			<button class="btn btn-xs" title="PixelForge" type="button" onclick="window.location.href=getURL('/pixelforge.htm')"><i class="icons btn-icon">&#xe410;</i></button>
-			<button class="btn btn-xs" title="Add custom palette" type="button" id="adPal" onclick="window.location.href=getURL('/cpal.htm')"><i class="icons btn-icon">&#xe18a;</i></button>
-			<button class="btn btn-xs" title="Remove last custom palette" type="button" id="rmPal" onclick="palettesData=null;localStorage.removeItem('wledPalx');requestJson({rmcpal:true});setTimeout(loadPalettes,250,loadPalettesData);"><i class="icons btn-icon">&#xe037;</i></button>
+			<button class="btn btn-xs" title="Custom palettes" type="button" id="editPal" onclick="window.location.href=getURL('/cpal.htm')"><i class="icons btn-icon">&#xe2b3;</i></button>
 		</div>
 		<p class="labels hd" id="pall"><i class="icons sel-icon" onclick="tglHex()">&#xe2b3;</i> Color palette</p>
 		<div id="palw" class="il">
@@ -364,8 +363,9 @@
 <!-- 
 	If you want to load iro.js and rangetouch.js as consecutive requests, you can do it like it was done in 0.14.0:
 	https://github.com/wled/WLED/blob/v0.14.0/wled00/data/index.htm
+	A more compact approach is implemented to load iro.js at the beginning of index.js.
 -->
-<script src="iro.js"></script>
+<!--  <script src="iro.js"></script> NOTE: iro.js is loaded at the beginning of index.js -->
 <script src="rangetouch.js"></script>
 <script src="index.js"></script>
 </body>

wled00/data/index.js

@@ -8,6 +8,7 @@ var segLmax = 0; // size (in pixels) of largest selected segment
 var selectedFx = 0;
 var selectedPal = 0;
 var csel = 0; // selected color slot (0-2)
+var cpick; // iro color picker
 var currentPreset = -1;
 var lastUpdate = 0;
 var segCount = 0, ledCount = 0, lowestUnused = 0, maxSeg = 0, lSeg = 0;
@@ -42,16 +43,24 @@ var hol = [
 	[0, 0, 1, 1, "https://images.alphacoders.com/119/1198800.jpg"]	// new year
 ];
 
-var cpick = new iro.ColorPicker("#picker", {
-	width: 260,
-	wheelLightness: false,
-	wheelAngle: 270,
-	wheelDirection: "clockwise",
-	layout: [{
-		component: iro.ui.Wheel,
-		options: {}
-	}]
-});
+// load iro.js sequentially to avoid 503 errors, retries until successful
+(function loadIro() {
+	const l = d.createElement('script');
+	l.src = 'iro.js';
+	l.onload = () => {
+		cpick = new iro.ColorPicker("#picker", {
+			width: 260,
+			wheelLightness: false,
+			wheelAngle: 270,
+			wheelDirection: "clockwise",
+			layout: [{component: iro.ui.Wheel, options: {}}]
+		});
+		d.readyState === 'complete' ? onLoad() : window.addEventListener('load', onLoad);
+	};
+	l.onerror = () => setTimeout(loadIro, 100);
+	document.head.appendChild(l);
+})();
+
 
 function handleVisibilityChange() {if (!d.hidden && new Date () - lastUpdate > 3000) requestJson();}
 function sCol(na, col) {d.documentElement.style.setProperty(na, col);}
@@ -972,8 +981,6 @@ function populatePalettes()
 			);
 		}
 	}
-	if (li.cpalcount>0) gId("rmPal").classList.remove("hide");
-	else                gId("rmPal").classList.add("hide");
 }
 
 function redrawPalPrev()
@@ -1645,14 +1652,12 @@ function setEffectParameters(idx)
 			paOnOff[0] = paOnOff[0].substring(0,dPos);
 		}
 		if (paOnOff.length>0 && paOnOff[0] != "!") text = paOnOff[0];
-		gId("adPal").classList.remove("hide");
-		if (lastinfo.cpalcount>0) gId("rmPal").classList.remove("hide");
+		gId("editPal").classList.remove("hide");
 	} else {
 		// disable palette list
 		text += ' not used';
 		palw.style.display = "none";
-		gId("adPal").classList.add("hide");
-		gId("rmPal").classList.add("hide");
+		gId("editPal").classList.add("hide");
 		// Close palette dialog if not available
 		if (palw.lastElementChild.tagName == "DIALOG") {
 			palw.lastElementChild.close();

wled00/json.cpp

@@ -535,17 +535,15 @@ bool deserializeState(JsonObject root, byte callMode, byte presetId)
     else callMode = CALL_MODE_DIRECT_CHANGE;  // possible bugfix for playlist only containing HTTP API preset FX=~
   }
 
-  if (root.containsKey(F("rmcpal")) && root[F("rmcpal")].as<bool>()) {
-    if (customPalettes.size()) {
-      char fileName[32];
-      sprintf_P(fileName, PSTR("/palette%d.json"), customPalettes.size()-1);
-      if (WLED_FS.exists(fileName)) WLED_FS.remove(fileName);
-      loadCustomPalettes();
-    }
+  if (root.containsKey(F("rmcpal"))) {
+    char fileName[32];
+    sprintf_P(fileName, PSTR("/palette%d.json"), root[F("rmcpal")].as<uint8_t>());
+    if (WLED_FS.exists(fileName)) WLED_FS.remove(fileName);
+    loadCustomPalettes();
   }
 
   doAdvancePlaylist = root[F("np")] | doAdvancePlaylist; //advances to next preset in playlist when true
-  
+
   JsonObject wifi = root[F("wifi")];
   if (!wifi.isNull()) {
     bool apMode = getBoolVal(wifi[F("ap")], apActive);

wled00/wled_server.cpp

@@ -6,6 +6,7 @@
 #include "html_ui.h"
 #include "html_settings.h"
 #include "html_other.h"
+#include "js_iro.h"
 #ifdef WLED_ENABLE_PIXART
   #include "html_pixart.h"
 #endif
@@ -36,6 +37,7 @@ static const char s_cache_control[]  PROGMEM = "Cache-Control";
 static const char s_no_store[]       PROGMEM = "no-store";
 static const char s_expires[]        PROGMEM = "Expires";
 static const char _common_js[]       PROGMEM = "/common.js";
+static const char _iro_js[]          PROGMEM = "/iro.js";
 
 
 //Is this an IP?
@@ -350,6 +352,10 @@ void initServer()
     handleStaticContent(request, FPSTR(_common_js), 200, FPSTR(CONTENT_TYPE_JAVASCRIPT), JS_common, JS_common_length);
   });
 
+  server.on(_iro_js, HTTP_GET, [](AsyncWebServerRequest *request) {
+    handleStaticContent(request, FPSTR(_iro_js), 200, FPSTR(CONTENT_TYPE_JAVASCRIPT), JS_iro, JS_iro_length);
+  });
+
   //settings page
   server.on(F("/settings"), HTTP_GET, [](AsyncWebServerRequest *request){
     serveSettings(request);