From 6677e75fcb69e819fa25b63e89e6897122dfcdd3 Mon Sep 17 00:00:00 2001
From: Cameron <e107inc@gmail.com>
Date: Fri, 17 Apr 2020 12:02:10 -0700
Subject: [PATCH] toImage() Added support for native image lazy-loading. See
 https://addyosmani.com/blog/lazy-loading/ for more info.

---
 e107_handlers/e_parse_class.php       | 7 ++++---
 e107_tests/tests/unit/e_parseTest.php | 4 ++++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/e107_handlers/e_parse_class.php b/e107_handlers/e_parse_class.php
index bc7978e2a..3f0a3f3fb 100644
--- a/e107_handlers/e_parse_class.php
+++ b/e107_handlers/e_parse_class.php
@@ -4543,9 +4543,9 @@ class e_parser
 
 
 	/**
-	 * Render an <img> tag.
+	 * Render an img tag.
 	 * @param string $file
-	 * @param array $parm  legacy|w|h|alt|class|id|crop
+	 * @param array $parm  keys: legacy|w|h|alt|class|id|crop|loading
 	 * @param array $parm['legacy'] Usually a legacy path like {e_FILE}
 	 * @return string
 	 * @example $tp->toImage('welcome.png', array('legacy'=>{e_IMAGE}newspost_images/','w'=>200));
@@ -4655,8 +4655,9 @@ class e_parser
 		$srcset = (!empty($parm['srcset'])) ? "srcset=\"".$parm['srcset']."\" " : "";
 		$width  = (!empty($parm['w']))      ? "width=\"".intval($parm['w'])."\" " : "";
 		$height = (!empty($parm['h']))      ? "height=\"".intval($parm['h'])."\" " : "";
+		$loading = !empty($parm['loading']) ? "loading=\"".$parm['loading']."\" " : ""; // eg. lazy, eager, auto
 
-		return "<img {$id}class='{$class}' src='".$path."' alt=\"".$alt."\" ".$srcset.$width.$height.$style." />";
+		return "<img {$id}class='{$class}' src='".$path."' alt=\"".$alt."\" ".$srcset.$width.$height.$style.$loading." />";
 
 	}
 
diff --git a/e107_tests/tests/unit/e_parseTest.php b/e107_tests/tests/unit/e_parseTest.php
index 18d099540..74d07db25 100644
--- a/e107_tests/tests/unit/e_parseTest.php
+++ b/e107_tests/tests/unit/e_parseTest.php
@@ -822,6 +822,10 @@ TMP;
 			$override = array('w'=>0, 'h'=>0); // display image without resizing
 			$result3 = $this->tp->toImage($src, $override);
 			$this->assertStringContainsString('Fbutterfly.jpg&amp;w=0&amp;h=0', $result3); // src
+
+			$result4 = $this->tp->toImage($src, ['loading'=>'lazy']);
+			$this->assertStringContainsString('loading="lazy"', $result4); // src
+
 		}
 
 		public function testThumbSrcSet()