From bc22df9057198018f9cc490d0e3e013692f52b90 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Mon, 16 Mar 2015 22:06:03 -0700
Subject: display a map for photos if allowed. Note: there is a bug in that if
 the map div starts with display:none one needs to reload the frame or zoom in
 or they end up at minimum resolution. Still trying to sort this out.

---
 include/photos.php | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'include')

diff --git a/include/photos.php b/include/photos.php
index 4b7809fc1..4785e47c4 100644
--- a/include/photos.php
+++ b/include/photos.php
@@ -205,6 +205,17 @@ function photo_upload($channel, $observer, $args) {
 
 	// Create item container
 
+	$lat = $lon = null;
+
+	if($exif && $exif['GPS']) {
+		if(get_pconfig($channel_id,'system','allow_photo_location')) {
+			$lat = getGps($exif['GPS']['GPSLatitude'], $exif['GPSLatitudeRef']);
+			$lon = getGps($exif['GPS']['GPSLongitude'], $exif['GPSLongitudeRef']);
+		}
+	}
+
+
+
 	$item_flags = ITEM_WALL|ITEM_ORIGIN|ITEM_THREAD_TOP;
 	$item_restrict = (($visible) ? ITEM_VISIBLE : ITEM_HIDDEN);
 	$title = '';
@@ -212,6 +223,9 @@ function photo_upload($channel, $observer, $args) {
 
 	$arr = array();
 
+	if($lat && $lon)
+		$arr['coord'] = $lat . ' ' . $lon;
+
 	$arr['aid']           = $account_id;
 	$arr['uid']           = $channel_id;
 	$arr['mid']           = $mid;
@@ -481,3 +495,30 @@ function photos_create_item($channel, $creator_hash, $photo, $visible = false) {
 
 	return $item_id;
 }
+
+
+function getGps($exifCoord, $hemi) {
+
+    $degrees = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
+    $minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
+    $seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
+
+    $flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
+
+    return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
+
+}
+
+function gps2Num($coordPart) {
+
+    $parts = explode('/', $coordPart);
+
+    if (count($parts) <= 0)
+        return 0;
+
+    if (count($parts) == 1)
+        return $parts[0];
+
+    return floatval($parts[0]) / floatval($parts[1]);
+}
+
-- 
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