I use only a few lua scripts available for DT.
One of those community-scripts is autostyle, it applies styles to RAW/images with selected exif-tags. But what I wanna do, is to apply just two styles to imported images.
While autostyle is awesome and not just some template, I still need some help to change it to my needs. Here’s the relevant part without the exif tags conditions:
local darktable = require "darktable"
local du = require "lib/dtutils"
local filelib = require "lib/dtutils.file"
du.check_min_api_version("7.0.0", "autostyle")
-- return data structure for script_manager
local script_data = {}
script_data.destroy = nil -- function to destory the script
script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
script_data.show = nil -- only required for libs since the destroy_method only hides them
-- run command and retrieve stdout
local function get_stdout(cmd)
-- Open the command, for reading
local fd = assert(io.popen(cmd, 'r'))
darktable.control.read(fd)
-- slurp the whole file
local data = assert(fd:read('*a'))
fd:close()
-- Replace carriage returns and linefeeds with spaces
data = string.gsub(data, '[\n\r]+', ' ')
-- Remove spaces at the beginning
data = string.gsub(data, '^%s+', '')
-- Remove spaces at the end
data = string.gsub(data, '%s+$', '')
return data
end
-- Apply the style to an image, if it matches the tag condition
local function autostyle_apply_one_image (image)
local pref = darktable.preferences.read("autostyle", "exif_tag", "string")
-- We need the tag, the value and the style_name provided from the configuration string
local value, style_name = string.match(pref, "(%g+)%s*=>%s*(%g+)")
if (not value) then
darktable.print("value to match not found in " .. pref)
return 0
end
if (not style_name) then
darktable.print("style name not found in " .. pref)
return 0
end
-- First find the style (we have its name)
local styles = darktable.styles
local style
for _, s in ipairs(styles) do
if s.name == style_name then
style = s
end
end
if (not style) then
darktable.print("style not found for autostyle: " .. style_name)
return 0
end
darktable.print_log("Image " .. image.filename .. ": autostyle automatically applied " .. pref)
darktable.styles.apply(style,image)
return 1
-- Receive the event triggered
local function autostyle_apply_one_image_event(event,image)
autostyle_apply_one_image(image)
end
local function autostyle_apply(shortcut)
local images = darktable.gui.action_images
local images_processed = 0
local images_submitted = 0
for _,image in pairs(images) do
images_submitted = images_submitted + 1
images_processed = images_processed + autostyle_apply_one_image(image)
end
darktable.print("Applied auto style to " .. images_processed .. " out of " .. images_submitted .. " image(s)")
end
local function destroy()
darktable.destroy_event("autostyle", "shortcut")
darktable.destroy_event("autostyle", "post-import-image")
end
-- Registering events
darktable.register_event("autostyle", "shortcut", autostyle_apply,
"Apply your chosen style from exiftool tags")
darktable.preferences.register("autostyle", "exif_tag", "string", "Autostyle: EXIF_tag=value=>style", "apply a style automatically if an EXIF_tag matches value. Find the tag with exiftool", "")
darktable.register_event("autostyle", "post-import-image",
autostyle_apply_one_image_event)
script_data.destroy = destroy
return script_data