From 21e17a294e3345097b42db55d1110a6a1389fd8e Mon Sep 17 00:00:00 2001
From: caribaud <christian@aribaud.net>
Date: Sun, 11 Jun 2023 09:51:47 +0200
Subject: [PATCH] more corrections

---
 eslint/eslintrc.json |  3 ++-
 melpomene.js         | 42 ++++++++++++++++++++++++++----------------
 2 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/eslint/eslintrc.json b/eslint/eslintrc.json
index 77aaba5..445108f 100644
--- a/eslint/eslintrc.json
+++ b/eslint/eslintrc.json
@@ -34,6 +34,7 @@
         "no-unused-vars": ["error", {"argsIgnorePattern": "^_"}],
         "max-len" : ["warn", {"code": 88}],
         "capitalized-comments": "off",
-        "operator-linebreak": ["warn", "before"]
+        "operator-linebreak": ["warn", "before"],
+        "max-lines": "off"
     }
 }
diff --git a/melpomene.js b/melpomene.js
index 8572c8c..567b92e 100644
--- a/melpomene.js
+++ b/melpomene.js
@@ -39,26 +39,36 @@ const PROGRESS_BAR = document.getElementById("melpomene-progress-bar");
 const PROGRESS_BAR_PAGES = document.getElementById("melpomene-progress-sections");
 const VERSION_DISPLAY = document.getElementById("melpomene-version");
 
+// ====================
+//   INDEX CONSTANTS
+// ====================
+
+const ZOOM_PAGE_INDEX = 0;
+const ZOOM_WIDTH_INDEX = 1;
+const ZOOM_HEIGHT_INDEX = 2;
+const ZOOM_X_INDEX = 3;
+const ZOOM_Y_INDEX = 4;
+
 // ===========================
 //   STATES GLOBAL VARIABLES
 // ===========================
 
-var PAGES_ZOOMS;
+let PAGES_ZOOMS;
 // The variable ZOOMS can either be defined by another JS file or contructed at init
 if (typeof PAGES_ZOOMS === "undefined")
 {
     PAGES_ZOOMS = null;
 }
 
-var CURRENT_ZOOM = 0;
-var CURRENT_PAGE = 1;
-var CURRENT_WIDTH = 0;
-var CURRENT_HEIGHT = 0;
-var CURRENT_X = 0;
-var CURRENT_Y = 0;
+let CURRENT_ZOOM = 0;
+let CURRENT_PAGE = 1;
+let CURRENT_WIDTH = 0;
+let CURRENT_HEIGHT = 0;
+let CURRENT_X = 0;
+let CURRENT_Y = 0;
 
-var IS_PAGE_MODE = false;
-var MOUSEWHELL_WAIT = false;
+let IS_PAGE_MODE = false;
+let MOUSEWHELL_WAIT = false;
 
 // =============
 //   UTILITIES
@@ -360,17 +370,17 @@ function moveReaderDisplayToPage(pageNumber)
     moveReaderDisplayToArea(pageNumber, 0, 0, 0, 0);
 }
 
-function moveReaderDisplayToZoom(index)
+function moveReaderDisplayToZoom(zoomIdx)
 {
     moveReaderDisplayToArea(
-        PAGES_ZOOMS[index][0],
-        PAGES_ZOOMS[index][1],
-        PAGES_ZOOMS[index][2],
-        PAGES_ZOOMS[index][3],
-        PAGES_ZOOMS[index][4]
+        PAGES_ZOOMS[zoomIdx][ZOOM_PAGE_INDEX],
+        PAGES_ZOOMS[zoomIdx][ZOOM_WIDTH_INDEX],
+        PAGES_ZOOMS[zoomIdx][ZOOM_HEIGHT_INDEX],
+        PAGES_ZOOMS[zoomIdx][ZOOM_X_INDEX],
+        PAGES_ZOOMS[zoomIdx][ZOOM_Y_INDEX]
     );
 
-    CURRENT_ZOOM = index;
+    CURRENT_ZOOM = zoomIdx;
 }
 
 function toggleViewMode()