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Initial commit of EXIF_GPS module.

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rWatcher 2010-02-25 21:51:55 -05:00
parent 4f61137174
commit f055accf85
5 changed files with 227 additions and 0 deletions
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67
modules/exif_gps/helpers/exif_gps.php Normal file
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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 exif data.
*/
class exif_gps_Core {
protected static $exif_keys;
static function extract($item) {
$keys = array();
// Extract Latitude and Longitude from the image (if they exist).
if ($item->is_photo() && $item->mime_type == "image/jpeg") {
$data = array();
require_once(MODPATH . "exif/lib/exif.php");
$exif_raw = read_exif_data_raw($item->file_path(), false);
if (isset($exif_raw['ValidEXIFData'])) {
foreach(self::_keys() as $field => $exifvar) {
if (isset($exif_raw[$exifvar[0]][$exifvar[1]])) {
$value = $exif_raw[$exifvar[0]][$exifvar[1]];
if (function_exists("mb_detect_encoding") && mb_detect_encoding($value) != "UTF-8") {
$value = utf8_encode($value);
}
$keys[$field] = Input::clean($value);
}
}
}
}
// If coordinates were extracted, save them to the database.
if (isset($keys["Latitude"]) && isset($keys["Longitude"])) {
$record = ORM::factory("exif_coordinate");
$record->item_id = $item->id;
$record->latitude = $keys["Latitude"];
$record->longitude = $keys["Longitude"];
$record->save();
}
}
private static function _keys() {
if (!isset(self::$exif_keys)) {
self::$exif_keys = array(
"Latitude" => array("GPS", "Latitude", t("GPS: Latitude"), ),
"Longitude" => array("GPS", "Longitude", t("GPS: Longitude"), )
);
}
return self::$exif_keys;
}
}

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modules/exif_gps/helpers/exif_gps_event.php Normal file
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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.
*/
class exif_gps_event_Core {
static function pre_deactivate($data) {
// If the admin is about to deactivate EXIF, warn them that this module requires it.
if ($data->module == "exif") {
$data->messages["warn"][] = t("The EXIF_GPS module requires the EXIF module.");
}
}
static function module_change($changes) {
// If EXIF is deactivated, display a warning that it is required for this module to function properly.
if (!module::is_active("exif") || in_array("exif", $changes->deactivate)) {
site_status::warning(
t("The EXIF_GPS module requires the EXIF module. " .
"<a href=\"%url\">Activate the EXIF module now</a>",
array("url" => html::mark_clean(url::site("admin/modules")))),
"exif_gps_needs_exif");
} else {
site_status::clear("exif_gps_needs_exif");
}
}
static function item_created($item) {
// Whenever a new non-album item is created, check it for GPS coordinates.
if (!$item->is_album()) {
exif_gps::extract($item);
}
}
static function item_deleted($item) {
// Whenever an item is deleted, delete any corresponding GPS coordinates.
db::build()
->delete("exif_coordinates")
->where("item_id", "=", $item->id)
->execute();
}
static function item_edit_form($item, $form) {
// Allow users to set / edit the GPS coordinates associated with the current item.
$record = ORM::factory("exif_coordinate")->where("item_id", "=", $item->id)->find();
if ($record->loaded()) {
$form->edit_item->input("latitude")->label(t("Latitude"))
->value($record->latitude);
$form->edit_item->input("longitude")->label(t("Longitude"))
->value($record->longitude);
} else {
$form->edit_item->input("latitude")->label(t("Latitude"));
$form->edit_item->input("longitude")->label(t("Longitude"));
}
}
static function item_edit_form_completed($item, $form) {
// Update the db records with the user-specified coordinates.
// Require a set of coordinates (both latitude and longitude).
// If one or both fields are blank, completely delete any coordinates associated with this item.
if (($form->edit_item->latitude->value == "") || ($form->edit_item->longitude->value == "")) {
db::build()
->delete("exif_coordinates")
->where("item_id", "=", $item->id)
->execute();
} else {
$record = ORM::factory("exif_coordinate")->where("item_id", "=", $item->id)->find();
if (!$record->loaded()) {
$record->item_id = $item->id;
}
$record->latitude = $form->edit_item->latitude->value;
$record->longitude = $form->edit_item->longitude->value;
$record->save();
}
}
}

46
modules/exif_gps/helpers/exif_gps_installer.php Normal file
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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.
*/
class exif_gps_installer {
static function install() {
// Create a table to store GPS data in.
$db = Database::instance();
$db->query("CREATE TABLE IF NOT EXISTS {exif_coordinates} (
`id` int(9) NOT NULL auto_increment,
`item_id` int(9) NOT NULL,
`latitude` varchar(128) NOT NULL,
`longitude` varchar(128) NOT NULL,
PRIMARY KEY (`id`),
KEY(`item_id`, `id`))
DEFAULT CHARSET=utf8;");
module::set_version("exif_gps", 1);
}
static function deactivate() {
site_status::clear("exif_gps_needs_exif");
}
static function uninstall() {
// Delete the GPS table before uninstalling.
$db = Database::instance();
$db->query("DROP TABLE IF EXISTS {exif_coordinates};");
module::delete("exif_gps");
}
}

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modules/exif_gps/models/exif_coordinate.php Normal file
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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.
*/
class EXIF_Coordinate_Model extends ORM {
}

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modules/exif_gps/module.info Normal file
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name = "Exif GPS Data"
description = "Extract Exif GPS data from photos."
version = 1