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<?php/* This code is part of FusionDirectory (http://www.fusiondirectory.org/) Copyright (C) 2011-2016 FusionDirectory 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 St, Fifth Floor, Boston, MA 02110-1301, USA.*/class ThemeFileParsingException extends Exception{}/*! * \brief Icon theme directory */class IconThemeDir{ /* Nominal (unscaled) size of the icons in this directory. * Required. */ private $Size; /* Specifies the minimum (unscaled) size that the icons in this directory can be scaled to. * Defaults to the value of Size if not present. */ private $MinSize; /* Specifies the maximum (unscaled) size that the icons in this directory can be scaled to. * Defaults to the value of Size if not present. */ private $MaxSize; /* The type of icon sizes for the icons in this directory. * Valid types are Fixed, Scalable and Threshold. * The type decides what other keys in the section are used. * If not specified, the default is Threshold. */ private $Type = 'Threshold'; /* The icons in this directory can be used if the size differ at most this much from the desired (unscaled) size. * Defaults to 2 if not present. */ private $Threshold = 2; function __construct ($infos) { $this->Size = $infos['Size']; $this->MinSize = $infos['Size']; $this->MaxSize = $infos['Size']; foreach (['Type', 'MaxSize', 'MinSize', 'Threshold'] as $key) { if (isset($infos[$key])) { $this->$key = $infos[$key]; } } /* Thanks to this Threshold and Scaled are the same */ if ($this->Type == 'Threshold') { $this->MinSize = $this->Size - $this->Threshold; $this->MaxSize = $this->Size + $this->Threshold; } } function MatchesSize ($size) {7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
switch ($this->Type) {
case 'Fixed':
return ($this->Size == $size);
case 'Threshold':
case 'Scalable':
default:
return (($this->MinSize <= $size) && ($size <= $this->MaxSize));
}
}
function SizeDistance ($size)
{
switch ($this->Type) {
case 'Fixed':
return abs($this->Size - $size);
case 'Threshold':
case 'Scalable':
default:
if ($size < $this->MinSize) {
return $this->MinSize - $size;
}
if ($size > $this->MaxSize) {
return $size - $this->MaxSize;
}
return 0;
}
}
}
/*!
* \brief Icon theme
*/
class IconTheme
{
private $subdirs = [];
private $path;
private $parent;
function __construct ($folder, $default_parent)
{
$this->path = $folder;
$datas = @parse_ini_file($folder.'/index.theme', TRUE, INI_SCANNER_RAW);
if ($datas === FALSE) {
throw new ThemeFileParsingException('Error while parsing theme file');
}
if (isset($datas['Icon Theme']['Directories']) && !empty($datas['Icon Theme']['Directories'])) {
$dirs = preg_split('/,/', $datas['Icon Theme']['Directories']);
foreach ($dirs as $name) {
if (isset($datas[$name])) {
$this->subdirs[strtolower($datas[$name]['Context'])][$name] = new IconThemeDir($datas[$name]);
}
}
}
if (isset($datas['Icon Theme']['Inherits'])) {
$this->parent = $datas['Icon Theme']['Inherits'];
} else {
$this->parent = $default_parent;
}
}
function FindIcon ($context, $icon, $size)
{
$context = strtolower($context);
return $this->FindIconHelper($context, $icon, $size);
}
function FindIconHelper ($context, $icon, $size)
{
$filename = $this->LookupIcon($context, $icon, $size);
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if ($filename != NULL) {
return $filename;
}
if (isset(static::$fallbacks[$context.'/'.$icon])) {
foreach (static::$fallbacks[$context.'/'.$icon] as $fallback) {
$filename = $this->LookupIcon($fallback[0], $fallback[1], $size);
if ($filename != NULL) {
return $filename;
}
}
}
if ($this->parent !== NULL) {
$parentTheme = $this->findTheme($this->parent);
if ($parentTheme === NULL) {
$parentTheme = $this->findTheme(static::$default_theme);
}
return $parentTheme->FindIconHelper($context, $icon, $size);
}
return NULL;
}
function LookupIcon ($context, $iconname, $size)
{
if (!isset($this->subdirs[$context])) {
return NULL;
}
foreach ($this->subdirs[$context] as $path => &$subdir) {
if ($subdir->MatchesSize($size)) {
foreach (static::$extensions as $extension) {
$filename = $this->path.'/'.$path.'/'.$iconname.'.'.$extension;
if (file_exists($filename)) {
return $filename;
}
}
}
}
unset($subdir);
if (static::$find_closest) {
$minimal_size = PHP_INT_MAX;
foreach ($this->subdirs[$context] as $path => &$subdir) {
if (($sizedistance = $subdir->SizeDistance($size)) < $minimal_size) {
foreach (static::$extensions as $extension) {
$filename = $this->path.'/'.$path.'/'.$iconname.'.'.$extension;
if (file_exists($filename)) {
$closest_filename = $filename;
$minimal_size = $sizedistance;
}
}
}
}
unset($subdir);
if (isset($closest_filename)) {
return $closest_filename;
}
}
return NULL;
}
static public $default_theme = 'breezy';
static public $extensions = ['png', 'xpm', 'svg'];
static public $find_closest = FALSE;
/* We store themes in the session. To do otherwise, override these methods. */
static public $session_var = 'IconThemes';
static public function loadThemes ($path)
{
$themes = [];