Merge pull request #5085 from owncloud/versioning_preview

add previews to versions dialog

apps/files_versions/ajax/preview.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+\OC_Util::checkLoggedIn();
+
+if(!\OC_App::isEnabled('files_versions')){
+	exit;
+}
+
+$file = array_key_exists('file', $_GET) ? (string) urldecode($_GET['file']) : '';
+$maxX = array_key_exists('x', $_GET) ? (int) $_GET['x'] : 44;
+$maxY = array_key_exists('y', $_GET) ? (int) $_GET['y'] : 44;
+$version = array_key_exists('version', $_GET) ? $_GET['version'] : '';
+$scalingUp = array_key_exists('scalingup', $_GET) ? (bool) $_GET['scalingup'] : true;
+
+if($file === '' && $version === '') {
+	\OC_Response::setStatus(400); //400 Bad Request
+	\OC_Log::write('core-preview', 'No file parameter was passed', \OC_Log::DEBUG);
+	exit;
+}
+
+if($maxX === 0 || $maxY === 0) {
+	\OC_Response::setStatus(400); //400 Bad Request
+	\OC_Log::write('core-preview', 'x and/or y set to 0', \OC_Log::DEBUG);
+	exit;
+}
+
+try{
+	$preview = new \OC\Preview(\OC_User::getUser(), 'files_versions');
+	$preview->setFile($file.'.v'.$version);
+	$preview->setMaxX($maxX);
+	$preview->setMaxY($maxY);
+	$preview->setScalingUp($scalingUp);
+
+	$preview->showPreview();
+}catch(\Exception $e) {
+	\OC_Response::setStatus(500);
+	\OC_Log::write('core', $e->getmessage(), \OC_Log::DEBUG);
+}

apps/files_versions/appinfo/routes.php

@@ -7,3 +7,8 @@
 
 // Register with the capabilities API
 OC_API::register('get', '/cloud/capabilities', array('OCA\Files_Versions\Capabilities', 'getCapabilities'), 'files_versions', OC_API::USER_AUTH);
+
+$this->create('core_ajax_versions_preview', '/preview.png')->action(
+function() {
+	require_once __DIR__ . '/../ajax/preview.php';
+});

apps/files_versions/css/versions.css

@@ -1,11 +1,11 @@
 #dropdown.drop-versions {
-	width:22em;
+	width:24em;
 }
 
 #found_versions li {
 	width: 100%;
 	cursor: default;
-	height: 36px;
+	height: 56px;
 	float: left;
 	border-bottom: 1px solid rgba(100,100,100,.1);
 }
@@ -21,6 +21,12 @@
 	filter: alpha(opacity=50);
 	opacity: .5;
 }
+
+#found_versions li > a,
+#found_versions li > span {
+	padding: 17px 7px;
+}
+
 #found_versions li > *:hover,
 #found_versions li > *:focus {
 	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
@@ -33,6 +39,11 @@
 	padding-right: 4px;
 }
 
+#found_versions img.preview {
+	cursor: default;
+	opacity: 1;
+}
+
 #found_versions .versionDate {
 	min-width: 100px;
 	vertical-align: text-bottom;

apps/files_versions/js/versions.js

@@ -129,6 +129,8 @@ function createVersionsDropdown(filename, files) {
 
 		var path = OC.filePath('files_versions', '', 'download.php');
 
+		var preview = '<img class="preview" src="'+revision.preview+'"/>';
+
 		var download ='<a href="' + path + "?file=" + files + '&revision=' + revision.version + '">';
 		download+='<img';
 		download+=' src="' + OC.imagePath('core', 'actions/download') + '"';
@@ -146,7 +148,7 @@ function createVersionsDropdown(filename, files) {
 
 		var version=$('<li/>');
 		version.attr('value', revision.version);
-		version.html(download + revert);
+		version.html(preview + download + revert);
 
 		version.appendTo('#found_versions');
 	}

apps/files_versions/lib/versions.php

@@ -266,6 +266,7 @@ class Storage {
 				$versions[$key]['version'] = $version;
 				$versions[$key]['humanReadableTimestamp'] = self::getHumanReadableTimestamp($version);
 				$versions[$key]['path'] = $filename;
+				$versions[$key]['preview'] = \OCP\Util::linkToRoute('core_ajax_versions_preview', array('file' => $filename, 'version' => $version));
 				$versions[$key]['size'] = $versions_fileview->filesize($filename.'.v'.$version);
 
 				// if file with modified date exists, flag it in array as currently enabled version