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Diffstat (limited to 'modules/gallery/libraries/Gallery_View.php')
| -rw-r--r-- | modules/gallery/libraries/Gallery_View.php | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/modules/gallery/libraries/Gallery_View.php b/modules/gallery/libraries/Gallery_View.php new file mode 100644 index 0000000..8f02b53 --- /dev/null +++ b/modules/gallery/libraries/Gallery_View.php @@ -0,0 +1,243 @@ +<?php defined("SYSPATH") or die("No direct script access."); +/** + * Gallery - a web based photo album viewer and editor + * Copyright (C) 2000-2013 Bharat Mediratta + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at + * your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. + */ +class Gallery_View_Core extends View { + protected $theme_name = null; + protected $combine_queue = array(); + + /** + * Provide a url to a resource within the current theme. This allows us to refer to theme + * resources without naming the theme itself which makes themes easier to copy. + */ + public function url($path, $absolute_url=false) { + $arg = "themes/{$this->theme_name}/$path"; + return $absolute_url ? url::abs_file($arg) : url::file($arg); + } + + /** + * Set up the data and render a pager. + * + * See themes/wind/views/pager.html for documentation on the variables generated here. + */ + public function paginator() { + $v = new View("paginator.html"); + $v->page_type = $this->page_type; + $v->page_subtype = $this->page_subtype; + $v->first_page_url = null; + $v->previous_page_url = null; + $v->next_page_url = null; + $v->last_page_url = null; + + if ($this->page_type == "collection") { + $v->page = $this->page; + $v->max_pages = $this->max_pages; + $v->total = $this->children_count; + + if ($this->page != 1) { + $v->first_page_url = url::site(url::merge(array("page" => 1))); + $v->previous_page_url = url::site(url::merge(array("page" => $this->page - 1))); + } + + if ($this->page != $this->max_pages) { + $v->next_page_url = url::site(url::merge(array("page" => $this->page + 1))); + $v->last_page_url = url::site(url::merge(array("page" => $this->max_pages))); + } + + $v->first_visible_position = ($this->page - 1) * $this->page_size + 1; + $v->last_visible_position = min($this->page * $this->page_size, $v->total); + } else if ($this->page_type == "item") { + $v->position = $this->position; + $v->total = $this->sibling_count; + if ($this->previous_item) { + $v->previous_page_url = $this->previous_item->url(); + } + + if ($this->next_item) { + $v->next_page_url = $this->next_item->url(); + } + } + + return $v; + } + + /** + * Begin gather up scripts or css files so that they can be combined into a single request. + * + * @param $types a comma separated list of types to combine, eg "script,css" + */ + public function start_combining($types) { + if (gallery::allow_css_and_js_combining()) { + foreach (explode(",", $types) as $type) { + $this->combine_queue[$type] = array(); + } + } + } + + /** + * If script combining is enabled, add this script to the list of scripts that will be + * combined into a single script element. When combined, the order of scripts is preserved. + * + * @param $file the file name or path of the script to include. If a path is specified then + * it needs to be relative to DOCROOT. Just specifying a file name will result + * in searching Kohana's cascading file system. + * @param $group the group of scripts to combine this with. defaults to "core" + */ + public function script($file, $group="core") { + if (($path = gallery::find_file("js", $file, false))) { + if (isset($this->combine_queue["script"])) { + $this->combine_queue["script"][$group][$path] = 1; + } else { + return html::script($path); + } + } else { + Kohana_Log::add("error", "Can't find script file: $file"); + } + } + + /** + * If css combining is enabled, add this css to the list of css that will be + * combined into a single style element. When combined, the order of style elements + * is preserved. + * + * @param $file the file name or path of the css to include. If a path is specified then + * it needs to be relative to DOCROOT. Just specifying a file name will result + * in searching Kohana's cascading file system. + * @param $group the group of css to combine this with. defaults to "core" + */ + public function css($file, $group="core") { + if (($path = gallery::find_file("css", $file, false))) { + if (isset($this->combine_queue["css"])) { + $this->combine_queue["css"][$group][$path] = 1; + } else { + return html::stylesheet($path); + } + } else { + Kohana_Log::add("error", "Can't find css file: $file"); + } + } + + /** + * Combine a series of files into a single one and cache it in the database. + * @param $type the data type (script or css) + * @param $group the group of scripts or css we want + */ + public function get_combined($type, $group="core") { + $links = array(); + + if (empty($this->combine_queue[$type][$group])) { + return; + } + + // Include the url in the cache key so that if the Gallery moves, we don't use old cached + // entries. + $key = array(url::abs_file("")); + + foreach (array_keys($this->combine_queue[$type][$group]) as $path) { + $stats = stat($path); + // 7 == size, 9 == mtime, see http://php.net/stat + $key[] = "$path $stats[7] $stats[9]"; + } + + $key = md5(join(" ", $key)); + $cache = Cache::instance(); + $contents = $cache->get($key); + + if (empty($contents)) { + $combine_data = new stdClass(); + $combine_data->type = $type; + $combine_data->contents = $this->combine_queue[$type][$group]; + module::event("before_combine", $combine_data); + + $contents = ""; + foreach (array_keys($this->combine_queue[$type][$group]) as $path) { + if ($type == "css") { + $contents .= "/* $path */\n" . $this->process_css($path) . "\n"; + } else { + $contents .= "/* $path */\n" . file_get_contents($path) . "\n"; + } + } + + $combine_data = new stdClass(); + $combine_data->type = $type; + $combine_data->contents = $contents; + module::event("after_combine", $combine_data); + + $cache->set($key, $combine_data->contents, array($type), 30 * 84600); + + $use_gzip = function_exists("gzencode") && + (int) ini_get("zlib.output_compression") === 0; + if ($use_gzip) { + $cache->set("{$key}_gz", gzencode($combine_data->contents, 9, FORCE_GZIP), + array($type, "gzip"), 30 * 84600); + } + + } + + unset($this->combine_queue[$type][$group]); + if (empty($this->combine_queue[$type])) { + unset($this->combine_queue[$type]); + } + + if ($type == "css") { + return html::stylesheet("combined/css/$key", "screen,print,projection", true); + } else { + return html::script("combined/javascript/$key", true); + } + } + + /** + * Convert relative references inside a CSS file to absolute ones so that when it's served from + * a new location as part of a combined bundle the references are still correct. + * @param string the path to the css file + */ + private function process_css($css_file) { + static $PATTERN = "#url\(\s*['|\"]{0,1}(.*?)['|\"]{0,1}\s*\)#"; + $docroot_length = strlen(DOCROOT); + + $css = file_get_contents($css_file); + if (preg_match_all($PATTERN, $css, $matches, PREG_SET_ORDER)) { + $search = $replace = array(); + foreach ($matches as $match) { + $relative = dirname($css_file) . "/$match[1]"; + if (!empty($relative)) { + $search[] = $match[0]; + $replace[] = "url('" . url::abs_file($relative) . "')"; + } else { + Kohana_Log::add("error", "Missing URL reference '{$match[1]}' in CSS file '$css_file'"); + + } + } + $replace = str_replace(DIRECTORY_SEPARATOR, "/", $replace); + $css = str_replace($search, $replace, $css); + } + $imports = preg_match_all("#@import\s*['|\"]{0,1}(.*?)['|\"]{0,1};#", + $css, $matches, PREG_SET_ORDER); + + if ($imports) { + $search = $replace = array(); + foreach ($matches as $match) { + $search[] = $match[0]; + $replace[] = $this->process_css(dirname($css_file) . "/$match[1]"); + } + $css = str_replace($search, $replace, $css); + } + + return $css; + } +}
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