Initial commit of EXIF_GPS module.
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67
modules/exif_gps/helpers/exif_gps.php
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67
modules/exif_gps/helpers/exif_gps.php
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<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2009 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* This is the API for handling exif data.
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*/
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class exif_gps_Core {
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protected static $exif_keys;
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static function extract($item) {
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$keys = array();
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// Extract Latitude and Longitude from the image (if they exist).
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if ($item->is_photo() && $item->mime_type == "image/jpeg") {
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$data = array();
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require_once(MODPATH . "exif/lib/exif.php");
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$exif_raw = read_exif_data_raw($item->file_path(), false);
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if (isset($exif_raw['ValidEXIFData'])) {
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foreach(self::_keys() as $field => $exifvar) {
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if (isset($exif_raw[$exifvar[0]][$exifvar[1]])) {
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$value = $exif_raw[$exifvar[0]][$exifvar[1]];
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if (function_exists("mb_detect_encoding") && mb_detect_encoding($value) != "UTF-8") {
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$value = utf8_encode($value);
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}
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$keys[$field] = Input::clean($value);
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}
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}
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}
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}
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// If coordinates were extracted, save them to the database.
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if (isset($keys["Latitude"]) && isset($keys["Longitude"])) {
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$record = ORM::factory("exif_coordinate");
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$record->item_id = $item->id;
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$record->latitude = $keys["Latitude"];
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$record->longitude = $keys["Longitude"];
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$record->save();
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}
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}
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private static function _keys() {
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if (!isset(self::$exif_keys)) {
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self::$exif_keys = array(
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"Latitude" => array("GPS", "Latitude", t("GPS: Latitude"), ),
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"Longitude" => array("GPS", "Longitude", t("GPS: Longitude"), )
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);
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}
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return self::$exif_keys;
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}
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}
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90
modules/exif_gps/helpers/exif_gps_event.php
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90
modules/exif_gps/helpers/exif_gps_event.php
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<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2009 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class exif_gps_event_Core {
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static function pre_deactivate($data) {
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// If the admin is about to deactivate EXIF, warn them that this module requires it.
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if ($data->module == "exif") {
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$data->messages["warn"][] = t("The EXIF_GPS module requires the EXIF module.");
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}
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}
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static function module_change($changes) {
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// If EXIF is deactivated, display a warning that it is required for this module to function properly.
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if (!module::is_active("exif") || in_array("exif", $changes->deactivate)) {
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site_status::warning(
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t("The EXIF_GPS module requires the EXIF module. " .
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"<a href=\"%url\">Activate the EXIF module now</a>",
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array("url" => html::mark_clean(url::site("admin/modules")))),
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"exif_gps_needs_exif");
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} else {
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site_status::clear("exif_gps_needs_exif");
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}
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}
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static function item_created($item) {
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// Whenever a new non-album item is created, check it for GPS coordinates.
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if (!$item->is_album()) {
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exif_gps::extract($item);
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}
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}
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static function item_deleted($item) {
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// Whenever an item is deleted, delete any corresponding GPS coordinates.
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db::build()
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->delete("exif_coordinates")
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->where("item_id", "=", $item->id)
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->execute();
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}
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static function item_edit_form($item, $form) {
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// Allow users to set / edit the GPS coordinates associated with the current item.
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$record = ORM::factory("exif_coordinate")->where("item_id", "=", $item->id)->find();
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if ($record->loaded()) {
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$form->edit_item->input("latitude")->label(t("Latitude"))
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->value($record->latitude);
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$form->edit_item->input("longitude")->label(t("Longitude"))
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->value($record->longitude);
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} else {
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$form->edit_item->input("latitude")->label(t("Latitude"));
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$form->edit_item->input("longitude")->label(t("Longitude"));
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}
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}
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static function item_edit_form_completed($item, $form) {
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// Update the db records with the user-specified coordinates.
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// Require a set of coordinates (both latitude and longitude).
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// If one or both fields are blank, completely delete any coordinates associated with this item.
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if (($form->edit_item->latitude->value == "") || ($form->edit_item->longitude->value == "")) {
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db::build()
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->delete("exif_coordinates")
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->where("item_id", "=", $item->id)
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->execute();
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} else {
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$record = ORM::factory("exif_coordinate")->where("item_id", "=", $item->id)->find();
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if (!$record->loaded()) {
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$record->item_id = $item->id;
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}
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$record->latitude = $form->edit_item->latitude->value;
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$record->longitude = $form->edit_item->longitude->value;
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$record->save();
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}
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}
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}
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46
modules/exif_gps/helpers/exif_gps_installer.php
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46
modules/exif_gps/helpers/exif_gps_installer.php
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<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2009 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class exif_gps_installer {
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static function install() {
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// Create a table to store GPS data in.
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$db = Database::instance();
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$db->query("CREATE TABLE IF NOT EXISTS {exif_coordinates} (
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`id` int(9) NOT NULL auto_increment,
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`item_id` int(9) NOT NULL,
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`latitude` varchar(128) NOT NULL,
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`longitude` varchar(128) NOT NULL,
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PRIMARY KEY (`id`),
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KEY(`item_id`, `id`))
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DEFAULT CHARSET=utf8;");
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module::set_version("exif_gps", 1);
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}
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static function deactivate() {
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site_status::clear("exif_gps_needs_exif");
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}
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static function uninstall() {
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// Delete the GPS table before uninstalling.
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$db = Database::instance();
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$db->query("DROP TABLE IF EXISTS {exif_coordinates};");
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module::delete("exif_gps");
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}
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}
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21
modules/exif_gps/models/exif_coordinate.php
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21
modules/exif_gps/models/exif_coordinate.php
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<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2009 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class EXIF_Coordinate_Model extends ORM {
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}
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3
modules/exif_gps/module.info
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3
modules/exif_gps/module.info
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name = "Exif GPS Data"
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description = "Extract Exif GPS data from photos."
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version = 1
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