188 lines
6.6 KiB
Lua
188 lines
6.6 KiB
Lua
--[[AutoGrouper plugin for darktable
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copyright (c) 2019 Kevin Ertel
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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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--[[About this Plugin
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This plugin adds the module "Auto Group" to darktable's lighttable view
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----REQUIRED SOFTWARE----
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None
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----USAGE----
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Install: (see here for more detail: https://github.com/darktable-org/lua-scripts )
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1) Copy this file in to your "lua/contrib" folder where all other scripts reside.
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2) Require this file in your luarc file, as with any other dt plug-in
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Set a gap amount in second which will be used to determine when images should no
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longer be added to a group. If an image is more then the specified amount of time
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from the last image in the group it will not be added. Images without timestamps
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in exif data will be ignored.
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There are two buttons. One allows the grouping to be performed only on the currently
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selected images, the other button performs grouping on the entire active collection
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]]
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local dt = require "darktable"
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local MOD = 'autogrouper'
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local gettext = dt.gettext
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-- Tell gettext where to find the .mo file translating messages for a particular domain
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gettext.bindtextdomain("AutoGrouper",dt.configuration.config_dir.."/lua/locale/")
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local function _(msgid)
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return gettext.dgettext("AutoGrouper", msgid)
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end
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local Ag = {}
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Ag.module_installed = false
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Ag.event_registered = false
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local GUI = {
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gap = {},
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selected = {},
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collection = {}
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}
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local function InRange(test, low, high) --tests if test value is within range of low and high (inclusive)
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if test >= low and test <= high then
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return true
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else
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return false
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end
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end
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local function CompTime(first, second) --compares the timestamps and returns true if first was taken before second
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first_time = first.exif_datetime_taken
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if string.match(first_time, '[0-9]') == nil then first_time = '9999:99:99 99:99:99' end
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first_time = tonumber(string.gsub(first_time, '[^0-9]*',''))
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second_time = second.exif_datetime_taken
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if string.match(second_time, '[0-9]') == nil then second_time = '9999:99:99 99:99:99' end
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second_time = tonumber(string.gsub(second_time, '[^0-9]*',''))
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return first_time < second_time
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end
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local function SeperateTime(str) --seperates the timestamp into individual components for used with OS.time operations
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local cleaned = string.gsub(str, '[^%d]',':')
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cleaned = string.gsub(cleaned, '::*',':') --YYYY:MM:DD:hh:mm:ss
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local year = string.sub(cleaned,1,4)
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local month = string.sub(cleaned,6,7)
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local day = string.sub(cleaned,9,10)
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local hour = string.sub(cleaned,12,13)
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local min = string.sub(cleaned,15,16)
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local sec = string.sub(cleaned,18,19)
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return {year = year, month = month, day = day, hour = hour, min = min, sec = sec}
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end
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local function GetTimeDiff(curr_image, prev_image) --returns the time difference (in sec.) from current image and the previous image
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local curr_time = SeperateTime(curr_image.exif_datetime_taken)
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local prev_time = SeperateTime(prev_image.exif_datetime_taken)
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return os.time(curr_time)-os.time(prev_time)
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end
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local function main(on_collection)
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local images = {}
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if on_collection then
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local col_images = dt.collection
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for i,image in ipairs(col_images) do --copy images to a standard table, table.sort barfs on type dt_lua_singleton_image_collection
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table.insert(images,i,image)
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end
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else
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images = dt.gui.selection()
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end
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dt.preferences.write(MOD, 'active_gap', 'integer', GUI.gap.value)
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if #images < 2 then
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dt.print('please select at least 2 images')
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return
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end
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table.sort(images, function(first, second) return CompTime(first,second) end) --sort images by timestamp
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for i, image in ipairs(images) do
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if i == 1 then
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prev_image = image
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elseif string.match(image.exif_datetime_taken, '[%d]') ~= nil then --make sure current image has a timestamp, if so check if it is within the user specified gap value and add to group
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local curr_image = image
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if GetTimeDiff(curr_image, prev_image) <= GUI.gap.value then
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images[i]:group_with(images[i-1])
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end
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prev_image = curr_image
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end
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end
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end
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local function install_module()
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if not Ag.module_installed then
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dt.register_lib(
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'AutoGroup_Lib', -- Module name
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_('auto group'), -- name
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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", 99}}, -- containers
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dt.new_widget("box"){
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orientation = "vertical",
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GUI.gap,
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GUI.selected,
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GUI.collection
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}
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)
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Ag.module_installed = true
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end
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end
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-- GUI --
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temp = dt.preferences.read(MOD, 'active_gap', 'integer')
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if not InRange(temp, 1, 86400) then temp = 3 end
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GUI.gap = dt.new_widget('slider'){
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label = _('group gap [sec.]'),
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tooltip = _('minimum gap, in seconds, between groups'),
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soft_min = 1,
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soft_max = 60,
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hard_min = 1,
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hard_max = 86400,
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step = 1,
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digits = 0,
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value = temp,
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reset_callback = function(self)
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self.value = 3
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end
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}
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GUI.selected = dt.new_widget("button"){
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label = _('auto group: selected'),
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tooltip =_('auto group selected images'),
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clicked_callback = function() main(false) end
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}
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GUI.collection = dt.new_widget("button"){
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label = _('auto group: collection'),
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tooltip =_('auto group the entire collection'),
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clicked_callback = function() main(true) end
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}
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if dt.gui.current_view().id == "lighttable" then
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install_module()
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else
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if not Ag.event_registered then
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dt.register_event(
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"view-changed",
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function(event, old_view, new_view)
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if new_view.name == "lighttable" and old_view.name == "darkroom" then
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install_module()
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end
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end
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)
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Ag.event_registered = true
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end
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end
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