New feature: Upload logo from backend

app/code/core/Mage/Adminhtml/Model/System/Config/Backend/Image/Logo.php

@@ -0,0 +1,61 @@
+<?php
+/**
+OpenMage
+
+This source file is subject to the Academic Free License (AFL 3.0)
+that is bundled with this package in the file LICENSE_AFL.txt.
+It is also available at https://opensource.org/license/afl-3-0-php
+ *
+ * @category   Mage
+ * @package    Mage_Adminhtml
+ * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
+ * @license    https://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+ */
+
+/**
+ * System config image field backend model for Zend PDF generator
+ *
+ * @category   Mage
+ * @package    Mage_Adminhtml
+ * @author     Magento Core Team <[email protected]>
+ */
+class Mage_Adminhtml_Model_System_Config_Backend_Image_Logo extends Mage_Adminhtml_Model_System_Config_Backend_Image
+{
+    /**
+	* The tail part of directory path for uploading
+	*/
+	const UPLOAD_DIR				= 'header/logo';
+
+	/**
+	* Token for the root part of directory path for uploading
+	*/
+	const UPLOAD_ROOT_TOKEN			= 'system/filesystem/media';
+
+	/**
+	* Upload max file size in kilobytes
+	*
+	* @var int
+	*/
+	protected $_maxFileSize			= 2048;
+
+	/**
+	* Return path to directory for upload file
+	*
+	* @return string
+	*/
+	protected function _getUploadDir() {
+		$uploadDir  = $this->_appendScopeInfo(self::UPLOAD_DIR);
+		$uploadRoot = $this->_getUploadRoot(self::UPLOAD_ROOT_TOKEN);
+		$uploadDir  = $uploadRoot . DS . $uploadDir;
+		return $uploadDir;
+	}
+
+	/**
+	* Makes a decision about whether to add info about the scope
+	*
+	* @return boolean
+	*/
+	protected function _addWhetherScopeInfo() {
+		return true;
+	}
+}

app/code/core/Mage/Adminhtml/Model/System/Config/Backend/Image/Logosmall.php

@@ -0,0 +1,39 @@
+<?php
+/**
+OpenMage
+
+This source file is subject to the Academic Free License (AFL 3.0)
+that is bundled with this package in the file LICENSE_AFL.txt.
+It is also available at https://opensource.org/license/afl-3-0-php
+ *
+ * @category   Mage
+ * @package    Mage_Adminhtml
+ * @copyright  Copyright (c) 2006-2020 Magento, Inc. (http://www.magento.com)
+ * @license    https://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
+ */
+
+/**
+ * System config image field backend model for Zend PDF generator
+ *
+ * @category   Mage
+ * @package    Mage_Adminhtml
+ * @author     Magento Core Team <[email protected]>
+ */
+class Mage_Adminhtml_Model_System_Config_Backend_Image_Logosmall extends Mage_Adminhtml_Model_System_Config_Backend_Image_Logo
+{
+    const UPLOAD_DIR                = 'header/logo_small';
+
+    /**
+     * Return path to directory for upload file
+     *
+     * @return string
+     */
+    protected function _getUploadDir()
+    {
+        $uploadDir  = $this->_appendScopeInfo(self::UPLOAD_DIR);
+        $uploadRoot = $this->_getUploadRoot(self::UPLOAD_ROOT_TOKEN);
+        $uploadDir  = $uploadRoot . DS . $uploadDir;
+        return $uploadDir;
+    }
+}
+

app/code/core/Mage/Page/Block/Html/Header.php

@@ -24,6 +24,9 @@
  */
 class Mage_Page_Block_Html_Header extends Mage_Core_Block_Template
 {
+    const LOGO_DIR          = 'header/logo/';
+    const LOGO_SMALL_DIR    = 'header/logo_small/';
+
     public function _construct()
     {
         $this->setTemplate('page/html/header.phtml');
@@ -57,9 +60,15 @@ public function setLogo($logo_src, $logo_alt)
     public function getLogoSrc()
     {
         if (empty($this->_data['logo_src'])) {
-            $this->_data['logo_src'] = Mage::getStoreConfig('design/header/logo_src');
+            if (file_exists(Mage::getBaseDir('media') . DS . self::LOGO_DIR . Mage::getStoreConfig('design/header/logo_src'))) {
+                $mediaBaseUrl = Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA);
+                $this->_data['logo_src'] = $mediaBaseUrl . self::LOGO_DIR . Mage::getStoreConfig('design/header/logo_src');
+            } else {
+                $this->_data['logo_src'] = Mage::getStoreConfig('design/header/logo_src');
+                $this->_data['logo_src'] = $this->getSkinUrl($this->_data['logo_src']);
+            }
         }
-        return $this->getSkinUrl($this->_data['logo_src']);
+        return $this->_data['logo_src'];
     }
 
     /**
@@ -68,9 +77,15 @@ public function getLogoSrc()
     public function getLogoSrcSmall()
     {
         if (empty($this->_data['logo_src_small'])) {
-            $this->_data['logo_src_small'] = Mage::getStoreConfig('design/header/logo_src_small');
+            if (file_exists(Mage::getBaseDir('media') . DS . self::LOGO_DIR . Mage::getStoreConfig('design/header/logo_src_small'))) {
+                $mediaBaseUrl = Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA);
+                $this->_data['logo_src_small'] = $mediaBaseUrl . self::LOGO_DIR . Mage::getStoreConfig('design/header/logo_src_small');
+            } else {
+                $this->_data['logo_src_small'] = Mage::getStoreConfig('design/header/logo_src_small');
+                $this->_data['logo_src_small'] = $this->getSkinUrl($this->_data['logo_src_small']);
+            }
         }
-        return $this->getSkinUrl($this->_data['logo_src_small']);
+        return $this->_data['logo_src_small'];
     }
 
     /**

app/code/core/Mage/Page/etc/system.xml

@@ -128,6 +128,9 @@
                         <logo_src translate="label">
                             <label>Logo Image Src</label>
                             <sort_order>10</sort_order>
+                            <frontend_type>image</frontend_type>
+							<backend_model>adminhtml/system_config_backend_image_logo</backend_model>
+							<base_url type="media" scope_info="1">header/logo</base_url>
                             <show_in_default>1</show_in_default>
                             <show_in_website>1</show_in_website>
                             <show_in_store>1</show_in_store>
@@ -142,6 +145,9 @@
                         <logo_src_small translate="label">
                             <label>Small Logo Image Src</label>
                             <sort_order>25</sort_order>
+                            <frontend_type>image</frontend_type>
+							<backend_model>adminhtml/system_config_backend_image_logosmall</backend_model>
+							<base_url type="media" scope_info="1">header/logo_small</base_url>
                             <show_in_default>1</show_in_default>
                             <show_in_website>1</show_in_website>
                             <show_in_store>1</show_in_store>