From a0488a2015e11d800c2fd9a91005da63cf8d08e4 Mon Sep 17 00:00:00 2001
From: Josef Kufner <josef@kufner.cz>
Date: Mon, 27 Mar 2017 14:00:50 +0200
Subject: [PATCH] Add preloadAfterLoad option to postpone preloading after the
 current image is fully loaded

Fixes #75
---
 src/js/gallery.js | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/src/js/gallery.js b/src/js/gallery.js
index f73d68c7..6727c6a3 100644
--- a/src/js/gallery.js
+++ b/src/js/gallery.js
@@ -20,6 +20,7 @@ $.magnificPopup.registerModule('gallery', {
 		enabled: false,
 		arrowMarkup: '<button title="%title%" type="button" class="mfp-arrow mfp-arrow-%dir%"></button>',
 		preload: [0,2],
+		preloadAfterLoad: false,
 		navigateByImgClick: true,
 		arrows: true,
 
@@ -89,14 +90,21 @@ $.magnificPopup.registerModule('gallery', {
 			});
 
 			_mfpOn(CHANGE_EVENT+ns, function() {
-				if(mfp._preloadTimeout) clearTimeout(mfp._preloadTimeout);
+				if (!gSt.preloadAfterLoad) {
+					if(mfp._preloadTimeout) clearTimeout(mfp._preloadTimeout);
 
-				mfp._preloadTimeout = setTimeout(function() {
-					mfp.preloadNearbyImages();
-					mfp._preloadTimeout = null;
-				}, 16);
+					mfp._preloadTimeout = setTimeout(function() {
+						mfp.preloadNearbyImages();
+						mfp._preloadTimeout = null;
+					}, 16);
+				}
 			});
 
+			_mfpOn('ImageLoadComplete', function() {
+				if (gSt.preloadAfterLoad) {
+					mfp.preloadNearbyImages();
+				}
+			});
 
 			_mfpOn(CLOSE_EVENT+ns, function() {
 				_document.off(ns);
@@ -161,4 +169,4 @@ $.magnificPopup.registerModule('gallery', {
 			item.preloaded = true;
 		}
 	}
-});
\ No newline at end of file
+});