GPX export script which generates a GPX track from all selected images containing geo information
This commit is contained in:
Jannis Völker
140
contrib/gpx_export.lua
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140
contrib/gpx_export.lua
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--[[
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This file is part of darktable,
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copyright (c) 2017 Jannis_V
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darktable 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 3 of the License, or
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(at your option) any later version.
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darktable is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with darktable. If not, see <http://www.gnu.org/licenses/>.
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]]
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--[[
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Simple darktable GPX generator script
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This script generates a GPX track from all images having GPS latitude
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and longitude information
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]]
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local dt = require "darktable"
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local df = require "lib/dtutils.file"
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local dl = require "lib/dtutils"
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local gettext = dt.gettext
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dt.configuration.check_version(...,{3,0,0},{4,0,0},{5,0,0})
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-- Tell gettext where to find the .mo file translating messages for a particular domain
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gettext.bindtextdomain("gpx_export",dt.configuration.config_dir.."/lua/locale/")
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local function _(msgid)
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return gettext.dgettext("gpx_export", msgid)
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end
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local path_entry = dt.new_widget("entry")
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{
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text = dt.preferences.read("gpx_exporter", "gpxExportPath", "string"),
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editable=true,
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reset_callback = function(self)
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self.text = "~/darktable.gpx"
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dt.preferences.write("gpx_exporter", "gpxExportPath", "string", self.text)
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end,
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tooltip = _("gpx file path"),
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}
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local function stop_job(job)
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job.valid = false
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end
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local function create_gpx_file()
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dt.preferences.write("gpx_exporter", "gpxExportPath", "string", path_entry.text)
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path = path_entry.text:gsub("^~", os.getenv("HOME")) -- Expand ~ to home
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path = path:gsub("//", "/")
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dt.print(_("exporting gpx file..."))
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job = dt.gui.create_job(_("gpx export"), true, stop_job)
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local gpx_file = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>\n"
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gpx_file = gpx_file.."<gpx xmlns=\"http://www.topografix.com/GPX/1/1\" creator=\"Darktable GPX Exporter\"\n version=\"1.1\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd\">\n"
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gpx_file = gpx_file.."\t<trk>\n"
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gpx_file = gpx_file.."\t\t<trkseg>\n";
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local sel_images = dt.gui.action_images
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for key,image in dl.spairs(sel_images, function(t, a, b) return t[b].exif_datetime_taken > t[a].exif_datetime_taken end) do
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if(job.valid) then
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job.percent = (key - 1) / #sel_images
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if ((image.longitude and image.latitude) and
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(image.longitude ~= 0 and image.latitude ~= 90) -- Just in case
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) then
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if(image.exif_datetime_taken == "") then
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dt.print(image.path.."/"..image.filename.._(" does not have date information and won't be processed"))
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print(image.path.."/"..image.filename.._(" does not have date information and won't be processed")) -- Also print to terminal
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else
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date_format = "(%d+):(%d+):(%d+) (%d+):(%d+):(%d+)"
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my_year, my_month, my_day, my_hour, my_min, my_sec = image.exif_datetime_taken:match(date_format)
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local my_timestamp = os.time({year=my_year, month=my_month, day=my_day, hour=my_hour, min=my_min, sec=my_sec})
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gpx_file = gpx_file.."\t\t\t<trkpt lat=\""..string.gsub(tostring(image.latitude), ",", ".").."\" lon=\""..string.gsub(tostring(image.longitude), ",", ".").."\">\n"
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gpx_file = gpx_file.."\t\t\t\t<time>"..os.date("!%Y-%m-%dT%H:%M:%SZ",my_timestamp).."</time>\n"
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gpx_file = gpx_file.."\t\t\t</trkpt>\n"
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end
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end
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else
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break
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end
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end
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job.valid = false
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gpx_file = gpx_file.."\t\t</trkseg>\n";
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gpx_file = gpx_file.."\t</trk>\n";
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gpx_file = gpx_file.."</gpx>\n";
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local file = io.open(path, "w")
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if (file == nil) then
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dt.print(_("invalid path: ")..path)
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else
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file:write(gpx_file)
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file:close()
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dt.print(_("gpx file created: ")..path)
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end
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end
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dt.register_lib(
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"gpx_exporter",
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"gpx export",
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true, -- expandable
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true, -- resetable
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{[dt.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_RIGHT_CENTER", 100}}, -- containers
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dt.new_widget("box")
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{
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orientation = "vertical",
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dt.new_widget("button")
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{
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label = _("export"),
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tooltip = _("export gpx file"),
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clicked_callback = create_gpx_file
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},
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dt.new_widget("box")
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{
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orientation = "horizontal",
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dt.new_widget("label")
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{
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label = _("file:"),
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},
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path_entry
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},
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},
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nil,-- view_enter
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nil -- view_leave
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)
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