From 2a9f699b1b033c797f0ecbcf9ce0f7143f3e4b08 Mon Sep 17 00:00:00 2001
From: Daniel Bulant <danbulant@gmail.com>
Date: Sat, 10 Dec 2022 17:51:50 +0100
Subject: [PATCH] fix image preloading

---
 .../[manga]/[chapter]/[page]/+page.svelte     | 26 +++++++++++--------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/src/routes/[manga]/[chapter]/[page]/+page.svelte b/src/routes/[manga]/[chapter]/[page]/+page.svelte
index 9e6ad3a..7b33472 100644
--- a/src/routes/[manga]/[chapter]/[page]/+page.svelte
+++ b/src/routes/[manga]/[chapter]/[page]/+page.svelte
@@ -16,18 +16,23 @@
     var title = manga.title.en || manga.title.jp || Object.values(manga.title)[0];
     $: title = manga.title.en || manga.title.jp || Object.values(manga.title)[0];
 
-    // $: if(last !== -1) preloadPage(page + 1);
+    onMount(() => {
+        preloadPage(parseInt(page) + 1)
+    });
 
-    // onMount(() => preloadPage(page + 1));
+    $: if(last !== page) preloadPage(parseInt(page) + 1);
 
-    // let last = -1;
-    // function preloadPage(num: number) {
-    //     if(last === num) return;
-    //     if(typeof window === "undefined") return;
-    //     preloadData("./" + num);
-    //     (new Image()).src = `${imageproxy}${atHome.baseUrl}/${quality}/${atHome.chapter.hash}/${atHome.chapter[quality][num - 1]}`;
-    //     last = num;
-    // }
+    let last = -1;
+    function preloadPage(num: number) {
+        if(last === num) return;
+        if(typeof window === "undefined") return;
+        if(num >= (atHome.chapter[quality].length)) return;
+        if(num < 1) return;
+        console.log("Preloading page " + num);
+        preloadData("./" + num);
+        (new Image()).src = `${imageproxy}${atHome.baseUrl}/${quality}/${atHome.chapter.hash}/${atHome.chapter[quality][num - 1]}`;
+        last = num;
+    }
 
     var quality = "data";
 
@@ -97,7 +102,6 @@
      */
     function mouseclick(e) {
         if(xDown !== null) return;
-        console.log(e.buttons);
         if(e.buttons & 8) {
             e.preventDefault();
             e.stopPropagation();