126 lines
4.2 KiB
Lua
126 lines
4.2 KiB
Lua
--[[
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German passport photo cropping guide for darktable.
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Derived from the passport cropping guide by Kåre Hampf.
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copyright (c) 2017 Kåre Hampf
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copyright (c) 2024 Christian Sültrop
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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 and ID card ("Personalausweis") photos based on the "Passbild-Schablone"
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from the German Federal Ministry of the Interior and Community.
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(https://www.bmi.bund.de/SharedDocs/downloads/DE/veroeffentlichungen/themen/moderne-verwaltung/ausweise/passbild-schablone-erwachsene.pdf?__blob=publicationFile&v=3)
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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_germany"
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* (optional) add the line:
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"plugins/darkroom/clipping/extra_aspect_ratios/passport 35x45mm=45:35"
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to $CONFIGDIR/darktablerc
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USAGE
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* when using the cropping tool, select "Passport Photo Germany" as guide and if you added the line in yout rc
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select "passport 35x45mm" 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_germany")
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-- Tell gettext where to find the .mo file translating messages for a particular domain
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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 Germany"),
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purpose = _("guides for cropping passport and ID card (\"Personalausweis\") photos based on the \"Passbild-Schablone\" from the German Federal Ministry of the Interior and Community"),
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author = "menschmachine",
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help = "https://docs.darktable.org/lua/stable/lua.scripts.manual/scripts/contrib/passport_guide_germany"
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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 Photo Germany",
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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 35x45 rectangle
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local aspect_ratio = 45 / 35
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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 / 35, _height / 45)
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-- the outer rectangle
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cairo:rectangle( 0, 0, 35, 45)
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-- Nose position: The nose tip must be between these lines
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cairo:draw_line(15.5, 45, 15.5, 13)
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cairo:draw_line(35-15.5, 45, 35-15.5, 13)
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-- Face height
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-- optimum face height: The upper end of the head should be between these lines
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cairo:draw_line(0, 4, 35, 4)
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cairo:draw_line(0, 8, 35, 8)
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-- tolerated face height: The upper end of the head must not be below this line
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cairo:draw_line(6, 13, 30, 13)
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-- Eye area: The eyes must be between these lines
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cairo:draw_line(0, 13, 35, 13)
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cairo:draw_line(0, 23, 35, 23)
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-- Cheek line: The cheek must lie on this line
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cairo:draw_line(9, 45-5, 27, 45-5)
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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 = _("Passport Photo Germany"), halign = "start"}
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end
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)
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local function destroy()
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-- noting 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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