gnu-social/actions/grouplogo.php

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<?php
/**
* Laconica, the distributed open-source microblogging tool
*
* Upload an avatar
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Settings
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @copyright 2008-2009 Control Yourself, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
if (!defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/lib/accountsettingsaction.php';
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define('MAX_ORIGINAL', 480);
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/**
* Upload an avatar
*
* We use jCrop plugin for jQuery to crop the image after upload.
*
* @category Settings
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
class GrouplogoAction extends Action
{
var $mode = null;
var $imagefile = null;
var $filename = null;
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var $msg = null;
var $success = null;
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/**
* Prepare to run
*/
function prepare($args)
{
parent::prepare($args);
if (!common_config('inboxes','enabled')) {
$this->serverError(_('Inboxes must be enabled for groups to work'));
return false;
}
if (!common_logged_in()) {
$this->clientError(_('You must be logged in to create a group.'));
return false;
}
$nickname_arg = $this->trimmed('nickname');
$nickname = common_canonical_nickname($nickname_arg);
// Permanent redirect on non-canonical nickname
if ($nickname_arg != $nickname) {
$args = array('nickname' => $nickname);
common_redirect(common_local_url('editgroup', $args), 301);
return false;
}
if (!$nickname) {
$this->clientError(_('No nickname'), 404);
return false;
}
$groupid = $this->trimmed('groupid');
if ($groupid) {
$this->group = User_group::staticGet('id', $groupid);
} else {
$this->group = User_group::staticGet('nickname', $nickname);
}
if (!$this->group) {
$this->clientError(_('No such group'), 404);
return false;
}
$cur = common_current_user();
if (!$cur->isAdmin($this->group)) {
$this->clientError(_('You must be an admin to edit the group'), 403);
return false;
}
return true;
}
function handle($args)
{
parent::handle($args);
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$this->handlePost();
} else {
$this->showForm();
}
}
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function showForm($msg = null, $success = false)
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{
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$this->msg = $msg;
$this->success = $success;
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$this->showPage();
}
/**
* Title of the page
*
* @return string Title of the page
*/
function title()
{
return _('Group logo');
}
/**
* Instructions for use
*
* @return instructions for use
*/
function getInstructions()
{
return _('You can upload a logo image for your group.');
}
/**
* Content area of the page
*
* Shows a form for uploading an avatar.
*
* @return void
*/
function showContent()
{
if ($this->mode == 'crop') {
$this->showCropForm();
} else {
$this->showUploadForm();
}
}
function showUploadForm()
{
$user = common_current_user();
$profile = $user->getProfile();
if (!$profile) {
common_log_db_error($user, 'SELECT', __FILE__);
$this->serverError(_('User without matching profile'));
return;
}
$original = $this->group->original_logo;
$this->elementStart('form', array('enctype' => 'multipart/form-data',
'method' => 'post',
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'id' => 'form_settings_avatar',
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'class' => 'form_settings',
'action' =>
common_local_url('grouplogo',
array('nickname' => $this->group->nickname))));
$this->elementStart('fieldset');
$this->element('legend', null, _('Group logo'));
$this->hidden('token', common_session_token());
$this->elementStart('ul', 'form_data');
if ($original) {
$this->elementStart('li', array('id' => 'avatar_original',
'class' => 'avatar_view'));
$this->element('h2', null, _("Original"));
$this->elementStart('div', array('id'=>'avatar_original_view'));
$this->element('img', array('src' => $this->group->original_logo,
'alt' => $this->group->nickname));
$this->elementEnd('div');
$this->elementEnd('li');
}
if ($this->group->homepage_logo) {
$this->elementStart('li', array('id' => 'avatar_preview',
'class' => 'avatar_view'));
$this->element('h2', null, _("Preview"));
$this->elementStart('div', array('id'=>'avatar_preview_view'));
$this->element('img', array('src' => $this->group->homepage_logo,
'width' => AVATAR_PROFILE_SIZE,
'height' => AVATAR_PROFILE_SIZE,
'alt' => $this->group->nickname));
$this->elementEnd('div');
$this->elementEnd('li');
}
$this->elementStart('li', array ('id' => 'settings_attach'));
$this->element('input', array('name' => 'avatarfile',
'type' => 'file',
'id' => 'avatarfile'));
$this->element('input', array('name' => 'MAX_FILE_SIZE',
'type' => 'hidden',
'id' => 'MAX_FILE_SIZE',
'value' => MAX_AVATAR_SIZE));
$this->elementEnd('li');
$this->elementEnd('ul');
$this->elementStart('ul', 'form_actions');
$this->elementStart('li');
$this->submit('upload', _('Upload'));
$this->elementEnd('li');
$this->elementEnd('ul');
$this->elementEnd('fieldset');
$this->elementEnd('form');
}
function showCropForm()
{
$this->elementStart('form', array('method' => 'post',
'id' => 'form_settings_avatar',
'class' => 'form_settings',
'action' =>
common_local_url('grouplogo',
array('nickname' => $this->group->nickname))));
$this->elementStart('fieldset');
$this->element('legend', null, _('Avatar settings'));
$this->hidden('token', common_session_token());
$this->elementStart('ul', 'form_data');
$this->elementStart('li',
array('id' => 'avatar_original',
'class' => 'avatar_view'));
$this->element('h2', null, _("Original"));
$this->elementStart('div', array('id'=>'avatar_original_view'));
$this->element('img', array('src' => common_avatar_url($this->filedata['filename']),
'width' => $this->filedata['width'],
'height' => $this->filedata['height'],
'alt' => $this->group->nickname));
$this->elementEnd('div');
$this->elementEnd('li');
$this->elementStart('li',
array('id' => 'avatar_preview',
'class' => 'avatar_view'));
$this->element('h2', null, _("Preview"));
$this->elementStart('div', array('id'=>'avatar_preview_view'));
$this->element('img', array('src' => common_avatar_url($this->filedata['filename']),
'width' => AVATAR_PROFILE_SIZE,
'height' => AVATAR_PROFILE_SIZE,
'alt' => $this->group->nickname));
$this->elementEnd('div');
foreach (array('avatar_crop_x', 'avatar_crop_y',
'avatar_crop_w', 'avatar_crop_h') as $crop_info) {
$this->element('input', array('name' => $crop_info,
'type' => 'hidden',
'id' => $crop_info));
}
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$this->submit('crop', _('Crop'));
$this->elementEnd('li');
$this->elementEnd('ul');
$this->elementEnd('fieldset');
$this->elementEnd('form');
}
/**
* Handle a post
*
* We mux on the button name to figure out what the user actually wanted.
*
* @return void
*/
function handlePost()
{
// CSRF protection
$token = $this->trimmed('token');
if (!$token || $token != common_session_token()) {
$this->show_form(_('There was a problem with your session token. '.
'Try again, please.'));
return;
}
if ($this->arg('upload')) {
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$this->uploadLogo();
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} else if ($this->arg('crop')) {
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$this->cropLogo();
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} else {
$this->showForm(_('Unexpected form submission.'));
}
}
/**
* Handle an image upload
*
* Does all the magic for handling an image upload, and crops the
* image by default.
*
* @return void
*/
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function uploadLogo()
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{
try {
$imagefile = ImageFile::fromUpload('avatarfile');
} catch (Exception $e) {
$this->showForm($e->getMessage());
return;
}
$filename = common_avatar_filename($this->group->id,
image_type_to_extension($imagefile->type),
null,
'group-temp-'.common_timestamp());
$filepath = common_avatar_path($filename);
move_uploaded_file($imagefile->filename, $filepath);
$filedata = array('filename' => $filename,
'filepath' => $filepath,
'width' => $imagefile->width,
'height' => $imagefile->height,
'type' => $imagefile->type);
$_SESSION['FILEDATA'] = $filedata;
$this->filedata = $filedata;
$this->mode = 'crop';
$this->showForm(_('Pick a square area of the image to be the logo.'),
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true);
}
/**
* Handle the results of jcrop.
*
* @return void
*/
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function cropLogo()
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{
$user = common_current_user();
$profile = $user->getProfile();
$filedata = $_SESSION['FILEDATA'];
if (!$filedata) {
$this->serverError(_('Lost our file data.'));
return;
}
$filepath = common_avatar_path($filedata['filename']);
if (!file_exists($filepath)) {
$this->serverError(_('Lost our file.'));
return;
}
switch ($filedata['type']) {
case IMAGETYPE_GIF:
$image_src = imagecreatefromgif($filepath);
break;
case IMAGETYPE_JPEG:
$image_src = imagecreatefromjpeg($filepath);
break;
case IMAGETYPE_PNG:
$image_src = imagecreatefrompng($filepath);
break;
default:
$this->serverError(_('Unknown file type'));
return;
}
// If image is not being cropped assume pos & dimentions of original
$dest_x = $this->arg('avatar_crop_x') ? $this->arg('avatar_crop_x'):0;
$dest_y = $this->arg('avatar_crop_y') ? $this->arg('avatar_crop_y'):0;
$dest_w = $this->arg('avatar_crop_w') ? $this->arg('avatar_crop_w'):$filedata['width'];
$dest_h = $this->arg('avatar_crop_h') ? $this->arg('avatar_crop_h'):$filedata['height'];
$size = ($dest_w > MAX_ORIGINAL) ? MAX_ORIGINAL : $dest_w;
common_debug("W = $dest_w, H = $dest_h, X = $dest_x, Y = $dest_y, size = $size");
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$image_dest = imagecreatetruecolor($size, $size);
if ($filedata['type'] == IMAGETYPE_GIF || $filedata['type'] == IMAGETYPE_PNG) {
$transparent_idx = imagecolortransparent($image_src);
if ($transparent_idx >= 0) {
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$transparent_color = imagecolorsforindex($image_src, $transparent_idx);
$transparent_idx = imagecolorallocate($image_dest, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);
imagefill($image_dest, 0, 0, $transparent_idx);
imagecolortransparent($image_dest, $transparent_idx);
} elseif ($filedata['type'] == IMAGETYPE_PNG) {
imagealphablending($image_dest, false);
$transparent = imagecolorallocatealpha($image_dest, 0, 0, 0, 127);
imagefill($image_dest, 0, 0, $transparent);
imagesavealpha($image_dest, true);
}
}
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imagecopyresampled($image_dest, $image_src, 0, 0, $dest_x, $dest_y, $size, $size, $dest_w, $dest_h);
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$filename = common_avatar_filename($this->group->id,
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image_type_to_extension($filedata['type']),
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null,
'group-'.common_timestamp());
$filepath = common_avatar_path($filename);
switch ($filedata['type']) {
case IMAGETYPE_GIF:
imagegif($image_dest, $filepath);
break;
case IMAGETYPE_JPEG:
imagejpeg($image_dest, $filepath);
break;
case IMAGETYPE_PNG:
imagepng($image_dest, $filepath);
break;
default:
$this->serverError(_('Unknown file type'));
return;
}
if ($this->group->setOriginal($filename, $filedata['type'])) {
@unlink(common_avatar_path($filedata['filename']));
unset($_SESSION['FILEDATA']);
$this->mode = 'upload';
$this->showForm(_('Logo updated.'), true);
} else {
$this->showForm(_('Failed updating logo.'));
}
}
function showPageNotice()
{
if ($this->msg) {
$this->element('div', ($this->success) ? 'success' : 'error',
$this->msg);
} else {
$inst = $this->getInstructions();
$output = common_markup_to_html($inst);
$this->elementStart('div', 'instructions');
$this->raw($output);
$this->elementEnd('div');
}
}
/**
* Add the jCrop stylesheet
*
* @return void
*/
function showStylesheets()
{
parent::showStylesheets();
$jcropStyle =
common_path('theme/base/css/jquery.Jcrop.css?version='.LACONICA_VERSION);
$this->element('link', array('rel' => 'stylesheet',
'type' => 'text/css',
'href' => $jcropStyle,
'media' => 'screen, projection, tv'));
}
/**
* Add the jCrop scripts
*
* @return void
*/
function showScripts()
{
parent::showScripts();
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if ($this->mode == 'crop') {
$jcropPack = common_path('js/jcrop/jquery.Jcrop.pack.js');
$jcropGo = common_path('js/jcrop/jquery.Jcrop.go.js');
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$this->element('script', array('type' => 'text/javascript',
'src' => $jcropPack));
$this->element('script', array('type' => 'text/javascript',
'src' => $jcropGo));
}
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}
function showLocalNav()
{
$nav = new GroupNav($this, $this->group);
$nav->show();
}
}