Display photo location if available

RPS 4/Monitor.cs

@@ -97,6 +97,7 @@ public Monitor(IntPtr previewHwnd, int id, Screensaver screensaver): this(id, sc
         public void defaultShowHide() {
             this.InvokeScript("setBackgroundColour", new string[] { Convert.ToString(this.screensaver.config.getPersistant("backgroundColour")) });
             this.InvokeScript("toggle", new string[] { "#quickMetadata", Convert.ToString(this.screensaver.config.getPersistantBool("showQuickMetadataM" + (this.id + 1))) });
+            this.InvokeScript("toggle", new string[] { "#location", Convert.ToString(this.screensaver.config.getPersistantBool("showLocationM" + (this.id + 1))) });
             this.InvokeScript("toggle", new string[] { "#filename", Convert.ToString(this.screensaver.config.getPersistantBool("showFilenameM" + (this.id + 1))) });
             this.InvokeScript("toggle", new string[] { "#filename .root", Convert.ToString(this.screensaver.config.getPersistantBool("showPathRoot")) });
             this.InvokeScript("toggle", new string[] { "#filename .subfolders", Convert.ToString(this.screensaver.config.getPersistantBool("showPathSubfolders")) });
@@ -440,6 +441,12 @@ public void readMetadataImage() {
                 }
                 if (rawMetadata != null && rawMetadata != "") {
                     this.quickMetadata = new MetadataTemplate(rawMetadata, Utils.HtmlDecode(this.screensaver.config.getPersistantString("quickMetadata")));
+                    if (this.quickMetadata.metadata.ContainsKey("gpslatitude") && this.quickMetadata.metadata.ContainsKey("gpslongitude")) {
+                        string location = Utils.GetLocationFromGps(this.quickMetadata.metadata["gpslatitude"], this.quickMetadata.metadata["gpslongitude"]);
+                        if (location != null) {
+                            this.imageSettings["location"] = location;
+                        }
+                    }
                     this.imageSettings["metadata"] = this.quickMetadata.fillTemplate();
                 }
                 this.imageSettings["mediatype"] = "image";

RPS 4/RPS 4.csproj

@@ -222,7 +222,7 @@
     <Error Condition="!Exists('..\packages\System.Data.SQLite.Core.1.0.94.0\build\net40\System.Data.SQLite.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\System.Data.SQLite.Core.1.0.94.0\build\net40\System.Data.SQLite.Core.targets'))" />
   </Target>
   <PropertyGroup>
-    <PostBuildEvent>call "$(DevEnvDir)..\Tools\vsvars32.bat"
+    <PostBuildEvent>call "$(DevEnvDir)..\Tools\VsDevCmd.bat"
 IF NOT EXIST "$(TargetDir)vendor" MKDIR "$(TargetDir)vendor"
 xcopy /d /s "$(ProjectDir)vendor\*.*" "$(TargetDir)vendor"
 rem IF NOT EXIST "$(TargetDir)data" MKDIR "$(TargetDir)data"

RPS 4/Utils.cs

@@ -11,9 +11,57 @@
 using System.Globalization;
 using System.Collections;
 using System.Collections.Concurrent;
+using System.Net;
+using Newtonsoft.Json.Linq;
+using System.Text.RegularExpressions;
 
 namespace RPS {
     class Utils {
+        private static double ConvertDmsToDd(string dms) {
+            var matches = System.Text.RegularExpressions.Regex.Matches(dms, @"[0-9\.]+");
+            var parts = matches.Cast<System.Text.RegularExpressions.Match>().Select(m => m.Value).ToList();
+
+            if (parts.Count >= 3) {
+                double deg = double.Parse(parts[0], CultureInfo.InvariantCulture);
+                double min = double.Parse(parts[1], CultureInfo.InvariantCulture);
+                double sec = double.Parse(parts[2], CultureInfo.InvariantCulture);
+                return deg + (min / 60.0) + (sec / 3600.0);
+            } else if (parts.Count == 1) {
+                return double.Parse(parts[0], CultureInfo.InvariantCulture);
+            }
+            return 0;
+        }
+
+        public static string GetLocationFromGps(string latitudeStr, string longitudeStr) {
+            if (latitudeStr == null || longitudeStr == null) return null;
+            try {
+                double latitude = ConvertDmsToDd(latitudeStr);
+                double longitude = ConvertDmsToDd(longitudeStr);
+
+                if (latitudeStr.ToUpper().Contains("S")) latitude = -latitude;
+                if (longitudeStr.ToUpper().Contains("W")) longitude = -longitude;
+
+                string url = $"https://nominatim.openstreetmap.org/reverse?format=json&lat={latitude.ToString(CultureInfo.InvariantCulture)}&lon={longitude.ToString(CultureInfo.InvariantCulture)}&accept-language=en";
+                Debug.WriteLine("GetLocationFromGps url:" + url);
+                using (WebClient wc = new WebClient()) {
+                    wc.Headers.Add("User-Agent", "RPS/4.0 (a screensaver)"); // Per Nominatim requirements
+                    string json = wc.DownloadString(url);
+                    JObject data = JObject.Parse(json);
+                    if (data["error"] == null && data["address"] != null) {
+                        string townish = new[] { "town", "city", "municipality", "village" }
+                            .Select(key => (string)data["address"][key])
+                            .FirstOrDefault(val => !string.IsNullOrEmpty(val)) ?? "";
+                        string country = (string)data["address"]["country"] ?? "";
+                        string prettyName = !string.IsNullOrEmpty(townish) ? $"{townish}, {country}" : country;
+                        Debug.WriteLine("GetLocationFromGps:" + prettyName);
+                        return prettyName;
+                    }
+                }
+            } catch (Exception ex) {
+                Debug.WriteLine("Error in GetLocationFromGps: " + ex.Message);
+            }
+            return null;
+        }
         public struct MSG {
             IntPtr hwnd;
             uint message;

RPS 4/data/config.html

@@ -473,6 +473,7 @@ <h2>Monitor 1</h2>
 									<h3>Information</h3>
 									<label for="showFilenameM1" class="tooltip" data-title="Toggle with F key whilst screensaver is running. Show advanced settings to set which parts of the filepath to show."><input type="checkbox" id="showFilenameM1" checked /> Show filename</label><br/>
 									<label for="showQuickMetadataM1" class="tooltip" data-title="Toggle with N key whilst screensaver is running"><input type="checkbox" id="showQuickMetadataM1" checked /> Show quick metadata</label><br/>
+									<label for="showLocationM1" class="tooltip" data-title="Show photo location information (if available in EXIF data)."><input type="checkbox" id="showLocationM1" checked /> Show location</label><br/>
 									<label for="showIndexProgressM1" class="tooltip" data-title="Show info on number of files: in database, selected by filter, metadata queue and files/folders scanned"><input type="checkbox" id="showIndexProgressM1" checked /> Show database / index / filter info</label>
 								</div>
 								<div class="set radioGroup">

RPS 4/data/css/monitor.css

@@ -128,6 +128,13 @@ html, body {
 	text-align: right;
 }
 
+#location {
+	z-index: 100;
+	right: 0.5em;
+	bottom: 2.5em;
+	text-align: right;
+}
+
 #debug {
 	z-index: 100;
 	right: 0.5em;

RPS 4/data/js/monitor.js

@@ -536,6 +536,11 @@ function showImage(source, displayPath, settings) {
 		$("#filename .filename")[0].innerHTML = settings["path.filename"];
 		$("#filename .extension")[0].innerHTML = settings["path.extension"];
 		document.getElementById("quickMetadata").innerHTML = settings["metadata"];
+		if (settings["location"] != undefined) {
+			document.getElementById("location").innerHTML = settings["location"];
+		} else {
+			document.getElementById("location").innerHTML = "";
+		}
 
 		if (settings["pano"] != undefined && settings["pano"] == true) {
 	//				window.prompt("Copy to clipboard: Ctrl+C, Enter", html);

RPS 4/data/monitor.html

@@ -23,6 +23,7 @@
 	<div id="indexprogress" class="info">#indexprogress#</div>
 	<div id="debug" class="info">#debug#</div>
 	<div id="quickMetadata" class="info">#metadata#</div>
+	<div id="location" class="info">#location#</div>
 	<div id="clock" class="info">hh:mm:ss</div>
 	<div id="rolodex" class=""></div>
 </body>

readme.md

@@ -3,6 +3,8 @@ Random Photo Screensaver(tm) 4
 
 Random Photo Screensaver 4 (RPS4) is a photo slideshow screensaver written in Visual Studio C#. 
 
+* This fork adds support for displaying photo location using EXIF GPS data. Most of the work was done by Jules, I just added some finishing touches and tweaks.
+
 Download / preview
 ------------------
 You can download the latest executable for Windows 7 & 8/8.1 from [abScreensavers.com](http://www.abscreensavers.com/random-photo-screensaver). This also showcases some of its many features.