source: plugins/atReply/index.php @ 1608

<?php
# ***** BEGIN LICENSE BLOCK *****
#
# This file is part of @ Reply, a plugin for Dotclear 2
# Copyright 2008,2009 Moe (http://gniark.net/) and buns
#
# @ Reply 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 3 of the License, or
# (at your option) any later version.
#
# @ Reply 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, see <http://www.gnu.org/licenses/>.
#
# Icon (icon.png) is from Silk Icons : http://www.famfamfam.com/lab/icons/silk/
#
# Inspired by http://iyus.info/at-reply-petit-plugin-wordpress-inspire-par-twitter/
#
# ***** END LICENSE BLOCK *****

if (!defined('DC_CONTEXT_ADMIN')) {return;}

$settings =& $core->blog->settings;

try
{
     if (!empty($_POST['saveconfig']))
     {
          $active = $settings->atreply_active;
          
          $color = trim($_POST['atreply_color']);
          
          $settings->setNameSpace('atreply');
          $settings->put('atreply_active',!empty($_POST['atreply_active']),
               'boolean','Enable @ Reply');
          $settings->put('atreply_display_title',!empty($_POST['atreply_display_title']),
               'boolean','Display a text when the cursor is hovering the arrow');
          $settings->put('atreply_color',$color,
               'string','@ Reply arrow\'s color');
          $settings->put('atreply_append',!empty($_POST['atreply_append']),
               'string','Append replies to appropriate comments');
          $settings->put('atreply_show_switch',!empty($_POST['atreply_show_switch']),
               'string','Display a switch to toggle threading');

          # inspired by lightbox/admin.php
          $settings->setNameSpace('system');
          
          # from commentsWikibar/index.php
          $settings->put('wiki_comments',true,'boolean');
          
          # if there is a color
          if (!empty($color))
          {
               # create the image
               
               # inspired by blowupConfig/lib/class.blowup.config.php
               $color = sscanf($color,'#%2X%2X%2X');
     
               $red = $color[0];
               $green = $color[1];
               $blue = $color[2];  
     
               $dir = path::real($core->blog->public_path.'/atReply',false);
               files::makeDir($dir,true);
               $file_path = $dir.'/reply.png';
     
               # create the image
               $img = imagecreatefrompng(dirname(__FILE__).'/img/transparent_16x16.png');
     
               $source = imagecreatefrompng(dirname(__FILE__).'/img/reply.png');
               imagealphablending($source,true);
     
               # copy image pixel per pixel, changing color but not the alpha channel
               for ($x=0;$x <= 15;$x++)
               {
                    for ($y=0;$y <= 15;$y++)
                    {
                         $rgb = imagecolorat($source,$x,$y);
                         $rgba = $rgb;
                         $r = ($rgb >> 16) & 0xFF;
                         $g = ($rgb >> 8) & 0xFF;
                         $b = $rgb & 0xFF;
     
                         # alpha is an undocumented feature, see
                         # http://php.net/manual/en/function.imagecolorat.php#79116
                         $alpha = ($rgba & 0x7F000000) >> 24;
     
                         if ($r > 0)
                         {
                              imageline($img,$x,$y,$x,$y,
                                   imagecolorallocatealpha($img,$red,$green,$blue,$alpha));
                         }
                    }
               }
               
               imagedestroy($source);
     
               imagesavealpha($img,true);
               if (is_writable($dir))
               {
                    imagepng($img,$file_path);
               }
               else
               {
                    throw new Exception(sprintf(__('%s is not writable'),$dir));
               }
               imagedestroy($img);
          }
          
          # only update the blog if the setting have changed
          if ($active == empty($_POST['atreply_active']))
          {
               $core->blog->triggerBlog();
               
               # delete the cache directory
               $core->emptyTemplatesCache();
          }
          
          http::redirect($p_url.'&saveconfig=1');
     }
}
catch (Exception $e)
{
     $core->error->add($e->getMessage());
}

if (isset($_GET['saveconfig']))
{
     $msg = __('Configuration successfully updated.');
}

$image_url = $core->blog->getQmarkURL().'pf=atReply/img/reply.png';

# personalized image
if (strlen($core->blog->settings->atreply_color) > 1)
{
     $personalized_image = $core->blog->settings->public_url.
          '/atReply/reply.png';
     
     if (file_exists(path::fullFromRoot($settings->public_path,
          DC_ROOT).'/atReply/reply.png'))
     {
          $image_url = $personalized_image;
          
          if (substr($settings->public_url,0,1) == '/')
          {
               # public_path is located at the root of the website
               $image_url = $core->blog->host.'/'.$personalized_image;
          } else {
               $image_url = $core->blog->url.$personalized_image;
          }
     }
}

?><html>
<head>
     <title><?php echo(('@ Reply')); ?></title>
     <?php echo(dcPage::jsColorPicker()); ?>
</head>
<body>

     <h2><?php echo html::escapeHTML($core->blog->name).' &rsaquo; '.('@ Reply'); ?></h2>
     
     <?php 
          if (!empty($msg)) {echo '<p class="message">'.$msg.'</p>';}
     ?>
     
     <form method="post" action="<?php echo $p_url; ?>">
          <fieldset>
               <legend><?php echo(__('@ Reply')); ?></legend>
               
               <p><?php echo(form::checkbox('atreply_active',1,
                    $settings->atreply_active)); ?>
                    <label class="classic" for="atreply_active">
                         <?php echo(__('Add arrows to easily reply to comments on the blog')); ?>
                    </label>
               </p>
               <p class="form-note">
                    <?php
                         # from commentsWikibar/index.php
                         echo(' '.__('Activating this plugin also enforces wiki syntax in blog comments.')); ?>
               </p>

               <p><?php echo(form::checkbox('atreply_display_title',1,
                    $settings->atreply_display_title)); ?>
                    <label class="classic" for="atreply_display_title">
                         <?php echo(__('Display a text when the cursor is hovering the arrow')); ?>
                    </label>
               </p>
               
               <p><?php echo(form::checkbox('atreply_append',1,
                    $settings->atreply_append)); ?>
                    <label class="classic" for="atreply_append">
                         <?php echo(__('Append replies to appropriate comments')); ?>
                    </label>
               </p>
               
               <p><?php echo(form::checkbox('atreply_show_switch',1,
                    $settings->atreply_show_switch)); ?>
                    <label class="classic" for="atreply_show_switch">
                         <?php echo(__('Display a switch to toggle threading')); ?>
                    </label>
               </p>
               
               <p>
                    <label class="classic" for="atreply_color">
                         <?php echo(__('Create an image with another color')); ?>
                    </label>
                    <?php echo(form::field('atreply_color',7,7,
                         $settings->atreply_color,'colorpicker')); ?>
               </p>
               <p class="form-note">
                    <?php echo(__('Leave empty to cancel this feature.').' '.
                         __('The default image will be used.')); ?>
               </p>
               
               <?php echo('<p>'.__('Preview:').' <img src="'.$image_url.
                    '" alt="reply.png" /></p>'); ?>     
          </fieldset>
          <p><?php echo $core->formNonce(); ?></p>
          <p><input type="submit" name="saveconfig" value="<?php echo __('Save configuration'); ?>" /></p>
     </form>

</body>
</html>