115 lines
3.7 KiB
Lua
115 lines
3.7 KiB
Lua
--[[
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Passport cropping guide for darktable
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copyright (c) 2017 Kåre Hampf
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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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PASSPORT CROPPING GUIDE
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guides for cropping passport photos based on documents from the Finnish police
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(https://poliisi.fi/documents/25235045/31329600/Passport-photograph-instructions-by-the-police-2020-EN-fixed.pdf/1eec2f4c-aed7-68e0-c112-0a8f25e0328d/Passport-photograph-instructions-by-the-police-2020-EN-fixed.pdf) describing passport photo dimensions of 47x36 mm and 500x653 px for digital biometric data stored in passports. They use ISO 19794-5 standard based on ICAO 9303 regulations which should also be compliant for all of Europe.
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INSTALLATION
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* copy this file in $CONFIGDIR/lua/ where CONFIGDIR is your darktable configuration directory
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* add the following line in the file $CONFIGDIR/luarc
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require "passport_guide"
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* (optional) add the line:
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"plugins/darkroom/clipping/extra_aspect_ratios/passport 36x47mm=47:36"
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to $CONFIGDIR/darktablerc
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USAGE
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* when using the cropping tool, select "passport" as guide and if you added the line in yout rc
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select "passport 36x47mm" as aspect
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]]
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local dt = require "darktable"
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local du = require "lib/dtutils"
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local gettext = dt.gettext.gettext
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du.check_min_api_version("2.0.0", "passport_guide")
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local function _(msgid)
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return gettext(msgid)
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end
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local script_data = {}
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script_data.metadata = {
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name = _("passport guide"),
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purpose = _("guides for cropping passport photos"),
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author = "Kåre Hampf",
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help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/passport_guide"
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}
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script_data.destroy = nil -- function to destory the script
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script_data.destroy_method = nil -- set to hide for libs since we can't destroy them commpletely yet, otherwise leave as nil
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script_data.restart = nil -- how to restart the (lib) script after it's been hidden - i.e. make it visible again
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script_data.show = nil -- only required for libs since the destroy_method only hides them
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dt.guides.register_guide("passport",
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-- draw
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function(cairo, x, y, width, height, zoom_scale)
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local _width, _height
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-- get the max 36x47 rectangle
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local aspect_ratio = 47 / 36
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if width * aspect_ratio > height then
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_width = height / aspect_ratio
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_height = height
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else
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_width = width
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_height = width * aspect_ratio
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end
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cairo:save()
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cairo:translate(x + (width - _width) / 2, y + (height - _height) / 2)
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cairo:scale(_width / 36, _height / 47)
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-- the outer rectangle
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cairo:rectangle( 0, 0, 36, 47)
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-- vertical bars
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cairo:draw_line(16.5, 8, 16.5, 36)
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cairo:draw_line(19.5, 8, 19.5, 36)
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-- long horisontal bars
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cairo:draw_line(6, 4, 30, 4)
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cairo:draw_line(6, 40, 30, 40)
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-- short horisontal bars
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cairo:draw_line(9, 6, 27, 6)
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cairo:draw_line(9, 38, 27, 38)
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cairo:restore()
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end,
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-- gui
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function()
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return dt.new_widget("label"){label = _("ISO 19794-5/ICAO 9309 passport"), halign = "start"}
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end
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)
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local function destroy()
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-- nothing to destroy
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end
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script_data.destroy = destroy
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return script_data
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-- kate: tab-indents: off; indent-width 2; replace-tabs on; remove-trailing-space on; hl Lua;
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-- vim: shiftwidth=2 expandtab tabstop=2 cindent syntax=lua
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