Create geo_uri.lua

Maps in 3.20 will be able to handle the 'geo' URI scheme. That means that if you enter the shortcut Gnome Maps will present the current window if there is one and go to location, and start a new instance of maps if there is none.

contrib/geo_uri.lua

@@ -0,0 +1,96 @@
+--[[
+    This file is part of darktable,
+    Copyright 2014 by Tobias Jakobs.
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+]]
+--[[
+darktable script to open a geo uri in gnome-maps
+
+ADDITIANAL SOFTWARE NEEDED FOR THIS SCRIPT
+* gnome-maps >= 3.20
+
+WARNING
+This script is not testet.
+
+USAGE
+* require this script from your main lua file
+* register a shortcut
+]]
+
+local dt = require "darktable"
+dt.configuration.check_version(...,{2,0,1})
+
+local function checkIfBinExists(bin)
+    local handle = io.popen("which "..bin)
+    local result = handle:read()
+    local ret
+    handle:close()
+    if (not result) then
+        dt.print_error(bin.." not found")
+        ret = false
+    end
+    ret = true
+    return ret
+end
+
+local function openLocationInGnomeMaps()
+    if not checkIfBinExists("gnome-maps") then
+        darktable.print_error("gnome-maps not found")
+        return
+    end	
+    
+	local sel_images = dt.gui.selection()
+
+    local lat1 = 0;
+    local lon1 = 0;
+    local i = 0;
+
+    local sel_images = dt.gui.selection()
+
+-- Use the first image with geo information
+    for _,image in ipairs(sel_images) do
+	    if ((image.longitude and image.latitude) and 
+            (image.longitude ~= 0 and image.latitude ~= 90) -- Sometimes the north-pole but most likely just wrong data
+           ) then
+          
+          i = i + 1;
+          
+          if (i == 1) then
+            lat1 = image.latitude;
+            lon1 = image.longitude;
+          end
+
+        end
+    end
+
+    if (lat1 and lon1) then
+
+        local startCommand
+      
+        startCommand = "gnome-maps \"geo:" .. lat1 .. "," .. lon1 .."\""
+      end
+      
+      dt.print_error(startCommand)
+    
+      if coroutine.yield("RUN_COMMAND", startCommand)
+        then
+        dt.print("Command failed ...")
+      end
+        
+    end
+end
+
+-- Register
+dt.register_event("shortcut", openLocationInGnomeMaps, "Open Location in Gnome Maps")