[Optimize] Add config for admin choose way for generate image of thumbnail for JImage class

administrator/components/com_config/model/form/application.xml

@@ -961,6 +961,23 @@
 			size="40" />
 	</fieldset>
 
+	<fieldset
+		name="thumbnail"
+		label="CONFIG_THUMBNAIL_SETTINGS_LABEL">
+		<field
+			name="thumbnail_generate_method"
+			type="radio"
+			class="btn-group"
+			label="COM_CONFIG_FIELD_THUMBNAIL_GENERATE_METHOD_LABEL"
+			description="COM_CONFIG_FIELD_THUMBNAIL_GENERATE_METHOD_DESC"
+			required="false"
+			default="1">
+			<option value="1">COM_CONFIG_FIELD_VALUE_THUMBNAIL_QUALITY</option>
+			<option value="0">COM_CONFIG_FIELD_VALUE_THUMBNAIL_SPEED</option>
+
+		</field>
+	</fieldset>
+
 	<fieldset
 		name="permissions"
 		label="CONFIG_PERMISSION_SETTINGS_LABEL">

administrator/components/com_config/view/application/tmpl/default.php

@@ -69,6 +69,7 @@
 						<div class="span6">
 							<?php echo $this->loadTemplate('seo'); ?>
 							<?php echo $this->loadTemplate('cookie'); ?>
+							<?php echo $this->loadTemplate('thumbnail'); ?>
 						</div>
 					</div>
 				</div>

administrator/components/com_config/view/application/tmpl/default_thumbnail.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * @package     Joomla.Administrator
+ * @subpackage  com_config
+ *
+ * @copyright   Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+defined('_JEXEC') or die;
+
+$this->name = JText::_('COM_CONFIG_THUMBNAIL_SETTINGS');
+$this->fieldsname = 'thumbnail';
+echo JLayoutHelper::render('joomla.content.options_default', $this);

administrator/language/en-GB/en-GB.com_config.ini

@@ -20,6 +20,7 @@ COM_CONFIG_COMPONENT_FIELDSET_LABEL="Component"
 COM_CONFIG_COOKIE_SETTINGS="Cookie Settings"
 COM_CONFIG_DATABASE_SETTINGS="Database Settings"
 COM_CONFIG_DEBUG_SETTINGS="Debug Settings"
+COM_CONFIG_THUMBNAIL_SETTINGS="Image Thumbnail Settings"
 COM_CONFIG_ERROR_CACHE_PATH_NOTWRITABLE="The cache folder is not writable: %s"
 COM_CONFIG_ERROR_COMPONENT_ASSET_NOT_FOUND="The asset for the component could not be found. Permissions have not been saved."
 COM_CONFIG_ERROR_CONFIG_EXTENSION_NOT_FOUND="The Global Configuration extension could not be found. Text filter settings have not been saved."
@@ -188,6 +189,8 @@ COM_CONFIG_FIELD_SITENAME_PAGETITLES_DESC="Begin or end all Page Titles with the
 COM_CONFIG_FIELD_SITENAME_PAGETITLES_LABEL="Include Site Name in Page Titles"
 COM_CONFIG_FIELD_TEMP_PATH_DESC="Please select a writable Temp folder."
 COM_CONFIG_FIELD_TEMP_PATH_LABEL="Path to Temp Folder"
+COM_CONFIG_FIELD_THUMBNAIL_GENERATE_METHOD_LABEL="Thumbnail generate method"
+COM_CONFIG_FIELD_THUMBNAIL_GENERATE_METHOD_DESC="Choose between 2 way for generate image thumbnail. Best quality or fastest speed."
 COM_CONFIG_FIELD_UNICODESLUGS_DESC="Choose between transliteration and unicode aliases. Transliteration is default."
 COM_CONFIG_FIELD_UNICODESLUGS_LABEL="Unicode Aliases"
 COM_CONFIG_FIELD_VALUE_ADMINISTRATOR_ONLY="Administrator Only"
@@ -211,6 +214,8 @@ COM_CONFIG_FIELD_VALUE_SITE_EMAIL="Site Email"
 COM_CONFIG_FIELD_VALUE_SMTP="SMTP"
 COM_CONFIG_FIELD_VALUE_SSL="SSL"
 COM_CONFIG_FIELD_VALUE_SYSTEM_DEFAULT="System Default"
+COM_CONFIG_FIELD_VALUE_THUMBNAIL_QUALITY="Best quality"
+COM_CONFIG_FIELD_VALUE_THUMBNAIL_SPEED="Fastest"
 COM_CONFIG_FIELD_VALUE_TLS="TLS"
 COM_CONFIG_FTP_DETAILS="FTP Login Details"
 COM_CONFIG_FTP_DETAILS_TIP="For updating your configuration.php file, Joomla will most likely need your FTP account details. Please enter them in the form fields below."

libraries/joomla/image/image.php

@@ -88,6 +88,13 @@ class JImage
 	 */
 	protected static $formats = array();
 
+	/**
+	 * @var    string  Method when generate thumbnail image.
+	 *
+	 * @since  3.4.4
+	 */
+	protected $generateBestQuality = true;
+
 	/**
 	 * Class constructor.
 	 *
@@ -127,6 +134,10 @@ public function __construct($source = null)
 			// If the source input is not empty, assume it is a path and populate the image handle.
 			$this->loadFile($source);
 		}
+
+		// Get generate method from global configuration
+		$config = JFactory::getConfig();
+		$this->generateBestQuality = (boolean) $config->get('thumbnail_generate_method', true);
 	}
 
 	/**
@@ -420,12 +431,15 @@ public function crop($width, $height, $left = null, $top = null, $createNew = tr
 			// Set the transparent color values for the new image.
 			imagecolortransparent($handle, $color);
 			imagefill($handle, 0, 0, $color);
+		}
 
-			imagecopyresized($handle, $this->handle, 0, 0, $left, $top, $width, $height, $width, $height);
+		if ($this->generateBestQuality)
+		{
+			imagecopyresampled($handle, $this->handle, 0, 0, $left, $top, $width, $height, $width, $height);
 		}
 		else
 		{
-			imagecopyresampled($handle, $this->handle, 0, 0, $left, $top, $width, $height, $width, $height);
+			imagecopyresized($handle, $this->handle, 0, 0, $left, $top, $width, $height, $width, $height);
 		}
 
 		// If we are cropping to a new image, create a new JImage object.
@@ -758,8 +772,11 @@ public function resize($width, $height, $createNew = true, $scaleMethod = self::
 			// Set the transparent color values for the new image.
 			imagecolortransparent($handle, $color);
 			imagefill($handle, 0, 0, $color);
+		}
 
-			imagecopyresized(
+		if ($this->generateBestQuality)
+		{
+			imagecopyresampled(
 				$handle,
 				$this->handle,
 				$offset->x,
@@ -774,7 +791,7 @@ public function resize($width, $height, $createNew = true, $scaleMethod = self::
 		}
 		else
 		{
-			imagecopyresampled(
+			imagecopyresized(
 				$handle,
 				$this->handle,
 				$offset->x,