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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 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.
*/
/**
* This is the API for handling photos.
*
* Note: by design, this class does not do any permission checking.
*/
class photo_Core {
/**
* Create a new photo.
* @param integer $parent parent album
* @param string $filename path to the photo file on disk
* @param string $name the filename to use for this photo in the album
* @param integer $title the title of the new photo
* @param string $description (optional) the longer description of this photo
* @param string $slug (optional) the url component for this photo
* @return Item_Model
*/
static function create($parent, $filename, $name, $title,
$description=null, $owner_id=null, $slug=null) {
if (!$parent->loaded || !$parent->is_album()) {
throw new Exception("@todo INVALID_PARENT");
}
if (!is_file($filename)) {
throw new Exception("@todo MISSING_IMAGE_FILE");
}
if (strpos($name, "/")) {
throw new Exception("@todo NAME_CANNOT_CONTAIN_SLASH");
}
// We don't allow trailing periods as a security measure
// ref: http://dev.kohanaphp.com/issues/684
if (rtrim($name, ".") != $name) {
throw new Exception("@todo NAME_CANNOT_END_IN_PERIOD");
}
if (filesize($filename) == 0) {
throw new Exception("@todo EMPTY_INPUT_FILE");
}
$image_info = getimagesize($filename);
// Force an extension onto the name
$pi = pathinfo($filename);
if (empty($pi["extension"])) {
$pi["extension"] = image_type_to_extension($image_info[2], false);
$name .= "." . $pi["extension"];
}
if (empty($slug)) {
$slug = item::convert_filename_to_slug($name);
}
$photo = ORM::factory("item");
$photo->type = "photo";
$photo->title = $title;
$photo->description = $description;
$photo->name = $name;
$photo->owner_id = $owner_id ? $owner_id : identity::active_user()->id;
$photo->width = $image_info[0];
$photo->height = $image_info[1];
$photo->mime_type = empty($image_info['mime']) ? "application/unknown" : $image_info['mime'];
$photo->thumb_dirty = 1;
$photo->resize_dirty = 1;
$photo->sort_column = "weight";
$photo->slug = $slug;
$photo->rand_key = ((float)mt_rand()) / (float)mt_getrandmax();
// Randomize the name or slug if there's a conflict
// @todo Improve this. Random numbers are not user friendly
while (ORM::factory("item")
->where("parent_id", $parent->id)
->open_paren()
->where("name", $photo->name)
->orwhere("slug", $photo->slug)
->close_paren()
->find()->id) {
$rand = rand();
$photo->name = "{$name}.$rand.{$pi['extension']}";
$photo->slug = "{$slug}-$rand";
}
// This saves the photo
$photo->add_to_parent($parent);
/*
* If the thumb or resize already exists then rename it. We need to do this after the save
* because the resize_path and thumb_path both call relative_path which caches the
* path. Before add_to_parent the relative path will be incorrect.
*/
if (file_exists($photo->resize_path()) ||
file_exists($photo->thumb_path())) {
$photo->name = $pi["filename"] . "-" . rand() . "." . $pi["extension"];
$photo->save();
}
copy($filename, $photo->file_path());
// @todo: publish this from inside Item_Model::save() when we refactor to the point where
// there's only one save() happening here.
module::event("item_created", $photo);
// Build our thumbnail/resizes. If we fail to build thumbnail/resize we assume that the image
// is bad in some way and discard it.
try {
graphics::generate($photo);
} catch (Exception $e) {
$photo->delete();
throw $e;
}
// If the parent has no cover item, make this it.
if (access::can("edit", $parent) && $parent->album_cover_item_id == null) {
item::make_album_cover($photo);
}
return $photo;
}
static function get_add_form($parent) {
$form = new Forge("albums/{$parent->id}", "", "post", array("id" => "g-add-photo-form"));
$group = $form->group("add_photo")->label(
t("Add Photo to %album_title", array("album_title" => $parent->title)));
$group->input("title")->label(t("Title"));
$group->textarea("description")->label(t("Description"));
$group->input("name")->label(t("Filename"));
$group->input("slug")->label(t("Internet Address"))->value($photo->slug)
->callback("item::validate_url_safe")
->error_messages(
"not_url_safe",
t("The internet address should contain only letters, numbers, hyphens and underscores"));
$group->upload("file")->label(t("File"))->rules("required|allow[jpg,png,gif,flv,mp4]");
$group->hidden("type")->value("photo");
$group->submit("")->value(t("Upload"));
$form->add_rules_from(ORM::factory("item"));
return $form;
}
static function get_edit_form($photo) {
$form = new Forge("photos/$photo->id", "", "post", array("id" => "g-edit-photo-form"));
$form->hidden("_method")->value("put");
$group = $form->group("edit_item")->label(t("Edit Photo"));
$group->input("title")->label(t("Title"))->value($photo->title);
$group->textarea("description")->label(t("Description"))->value($photo->description);
$group->input("filename")->label(t("Filename"))->value($photo->name)
->rules("required")
->error_messages(
"name_conflict", t("There is already a movie, photo or album with this name"))
->callback("item::validate_no_slashes")
->error_messages("no_slashes", t("The photo name can't contain a \"/\""))
->callback("item::validate_no_trailing_period")
->error_messages("no_trailing_period", t("The photo name can't end in \".\""))
->error_messages("illegal_extension", t("You cannot change the filename extension"));
$group->input("slug")->label(t("Internet Address"))->value($photo->slug)
->callback("item::validate_url_safe")
->error_messages(
"slug_conflict", t("There is already a movie, photo or album with this internet address"))
->error_messages(
"not_url_safe",
t("The internet address should contain only letters, numbers, hyphens and underscores"));
module::event("item_edit_form", $photo, $form);
$group = $form->group("buttons")->label("");
$group->submit("")->value(t("Modify"));
$form->add_rules_from(ORM::factory("item"));
return $form;
}
/**
* Return scaled width and height.
*
* @param integer $width
* @param integer $height
* @param integer $max the target size for the largest dimension
* @param string $format the output format using %d placeholders for width and height
*/
static function img_dimensions($width, $height, $max, $format="width=\"%d\" height=\"%d\"") {
if (!$width || !$height) {
return "";
}
if ($width > $height) {
$new_width = $max;
$new_height = (int)$max * ($height / $width);
} else {
$new_height = $max;
$new_width = (int)$max * ($width / $height);
}
return sprintf($format, $new_width, $new_height);
}
}
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