upload and change avatars

code to upload and change avatars.

combined some code in the settings area, too.

darcs-hash:20080517122045-84dde-8e13994e627805f29679c9533c2f62db81dc0925.gz

1 files changed, 208 insertions, 0 deletions

diff --git a/actions/avatar.php b/actions/avatar.php
new file mode 100644
index 000000000..b715e02de
--- /dev/null
+++ b/actions/avatar.php
@@ -0,0 +1,208 @@
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * 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/>.
+ */
+
+if (!defined('LACONICA')) { exit(1) }
+
+class AvatarAction extends SettingsAction {
+
+	function show_form($msg=NULL, $success=false) {
+		common_show_header(_t('Avatar'));
+		$this->settings_menu();
+		$this->message($msg, $success);
+
+		$user = common_current_user();
+		$profile = $user->getProfile();
+		$original = $profile->getOriginal();
+
+		if ($original) {
+			common_element('img', array('src' => $original->url,
+										'class' => 'avatar original',
+										'width' => $original->width,
+										'height' => $original->height));
+		}
+
+		$avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
+
+		if ($avatar) {
+			common_element('img', array('src' => $avatar->url,
+										'class' => 'avatar profile',
+										'width' => AVATAR_PROFILE_SIZE,
+										'height' => AVATAR_PROFILE_SIZE));
+		}
+
+		common_start_element('form', array('enctype' => 'multipart/form-data',
+										   'method' => 'POST',
+										   'id' => 'avatar',
+										   'action' =>
+										   common_local_url('avatar')));
+		common_element('input', array('name' => 'MAX_FILE_SIZE',
+									  'type' => 'hidden',
+									  'id' => 'MAX_FILE_SIZE',
+									  'value' => MAX_AVATAR_SIZE));
+		common_element('input', array('name' => 'avatarfile',
+									  'type' => 'file',
+									  'id' => 'avatarfile'));
+		common_element('input', array('name' => 'submit',
+									  'type' => 'submit',
+									  'id' => 'submit'),
+					   _t('Upload'));
+	}
+
+	function handle_post() {
+
+		switch ($_FILES['avatarfile']['error']) {
+		 case UPLOAD_ERR_OK: # success, jump out
+			break;
+		 case UPLOAD_ERR_INI_SIZE:
+		 case UPLOAD_ERR_FORM_SIZE:
+			$this->show_form(_t('That file is too big.'));
+			return;
+		 case UPLOAD_ERR_PARTIAL:
+			@unlink($_FILES['avatarfile']['tmp_name']);
+			$this->show_form(_t('Partial upload.'));
+			return;
+		 default:
+			$this->show_form(_t('System error uploading file.'));
+			return;
+		}
+
+		$info = @getimagesize($_FILES['avatarfile']['tmp_name']);
+
+		if (!$info) {
+			@unlink($_FILES['avatarfile']['tmp_name']);
+			$this->show_form(_t('Not an image or corrupt file.'));
+			return;
+		}
+
+		switch ($info[2]) {
+		 case IMAGETYPE_GIF:
+		 case IMAGETYPE_JPEG:
+		 case IMAGETYPE_PNG:
+			break;
+		 default:
+			$this->show_form(_t('Unsupported image file format.'));
+			return;
+		}
+		
+		$user = common_current_user();
+
+		$filename = common_avatar_filename($user, image_type_to_extension($info[2]));
+		$filepath = common_avatar_path($filename);
+
+		if (!move_uploaded_file($_FILES['avatarfile']['tmp_name'], $filepath)) {
+			@unlink($_FILES['avatarfile']['tmp_name']);
+			$this->show_form(_t('System error uploading file.'));
+			return;
+		}
+
+		$avatar = DB_DataObject::factory('avatar');
+
+		$avatar->profile_id = $user->id;
+		$avatar->width = $info[0];
+		$avatar->height = $info[1];
+		$avatar->mediatype = image_type_to_mime_type($info[2]);
+		$avatar->filename = $filename;
+		$avatar->original = true;
+		$avatar->url = common_avatar_url($filename);
+
+		foreach (array(AVATAR_PROFILE_SIZE, AVATAR_STREAM_SIZE, AVATAR_MINI_SIZE) as $size) {
+			$scaled[] = $this->scale_avatar($user, $avatar, $size);
+		}
+
+		# XXX: start a transaction here
+
+		if (!$this->delete_old_avatars($user)) {
+			@unlink($filepath);
+			common_server_error(_t('Error deleting old avatars.'));
+			return;
+		}
+
+		if (!$avatar->insert()) {
+			@unlink($filepath);
+			common_server_error(_t('Error inserting avatar.'));
+			return;
+		}
+
+		foreach ($scaled as $s) {
+			if (!$s->insert()) {
+				common_server_error(_t('Error inserting scaled avatar.'));
+				return;
+			}
+		}
+
+		# XXX: end transaction here
+
+		$this->show_form(_t('Avatar updated.'), true);
+	}
+	
+	function scale_avatar($user, $avatar, $size) {
+		$image_s = imagecreatetruecolor($size, $size);
+		$image_a = $this->avatar_to_image($avatar);
+		
+		$square = min($avatar->width, $avatar->height);
+		
+		imagecopyresampled($image_s, $image_a, 0, 0, 0, 0,
+						   $size, $size, $square, $square);
+
+		$ext = ($avatar->mediattype == 'image/jpeg') ? ".jpg" : ".png";
+		
+		$filename = common_avatar_filename($user, $ext, $size);
+		
+		if ($avatar->mediatype == 'image/jpeg') {
+			imagejpeg($image_s, common_avatar_path($filename));
+		} else {
+			imagepng($image_s, common_avatar_path($filename));
+		}
+		
+		$scaled = DB_DataObject::factory('avatar');
+		$scaled->profile_id = $avatar->profile_id;
+		$scaled->width = $size;
+		$scaled->height = $size;
+		$scaled->original = false;
+		$scaled->mediatype = ($avatar->mediattype == 'image/jpeg') ? 'image/jpeg' : 'image/png';
+		$scaled->filename = $filename;
+		$scaled->url = common_avatar_url($filename);
+		
+		return $scaled;
+	}
+	
+	function avatar_to_image($avatar) {
+		$filepath = common_avatar_path($avatar->filename);
+		if ($avatar->mediatype == 'image/gif') {
+			return imagecreatefromgif($filepath);
+		} else if ($avatar->mediatype == 'image/jpeg') {
+			return imagecreatefromjpeg($filepath);			
+		} else if ($avatar->mediatype == 'image/png') {
+			return imagecreatefrompng($filepath);
+		} else {
+			common_server_error(_t('Unsupported image type:') . $avatar->mediatype);
+			return NULL;
+		}
+	}
+	
+	function delete_old_avatars($user) {
+		$avatar = DB_DataObject::factory('avatar');
+		$avatar->profile_id = $user->id;
+		$avatar->find();
+		while ($avatar->fetch()) {
+			$avatar->delete();
+		}
+	}
+}
+