Merge pull request #162 from BzKevin/BzKevin-CollectHelper

Add CollectHelper

Author: wpferguson

contrib/CollectHelper.lua

@@ -0,0 +1,221 @@
+--[[Collect Helper plugin for darktable
+
+  copyright (c) 2019  Kevin Ertel
+  
+  darktable is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+  
+  darktable is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+  
+  You should have received a copy of the GNU General Public License
+  along with darktable.  If not, see <http://www.gnu.org/licenses/>.
+]]
+
+--[[About this plugin
+This plugin adds the button(s) to the "Selected Images" module:
+1) Return to Previous Collection
+2) Collect on image's Folder
+3) Collect on image's Color Label(s)
+4) Collect on All (AND)
+
+It also adds 3 preferences to the lua options dialog box which allow the user to activate/deactivate the 3 "Collect on" buttons.
+
+Button Behavior:
+1) Return to Previous Collection - Will reset the collect parameters to the previously active settings
+2) Collect on image's Folder - Will change the collect parameters to be "Folder" with a value of the selected image's folder location
+3) Collect on image's Color Label(s) - Will change the collect parameter to be "Color" with a value of the selected images color labels, will apply multiple parameters with AND logic if multiple exist
+4) Collect on All (AND) - Will collect on all parameters activated by the preferences dialog, as such this button is redundant if you only have one of the two other options enabled
+
+----REQUIRED SOFTWARE----
+NA
+
+----USAGE----
+Install: (see here for more detail: https://github.com/darktable-org/lua-scripts )
+ 1) Copy this file in to your "lua/contrib" folder where all other scripts reside. 
+ 2) Require this file in your luarc file, as with any other dt plug-in
+
+Select the photo you wish to change you collection based on.
+In the "Selected Images" module click on "Collect on this Image"
+
+----KNOWN ISSUES----
+]]
+
+local dt = require "darktable"
+local gettext = dt.gettext
+local previous = nil
+local all_active = false
+
+-- Tell gettext where to find the .mo file translating messages for a particular domain
+gettext.bindtextdomain("gimp",dt.configuration.config_dir.."/lua/locale/")
+
+local function _(msgid)
+    return gettext.dgettext("CollectHelper", msgid)
+end
+
+-- FUNCTION --
+local function CheckSingleImage(selection)
+	if #selection ~= 1 then
+		dt.print(_("Please select a single image"))
+		return true
+	end
+	return false
+end
+local function CheckHasColorLabel(selection)
+	local ret = false
+	for _,image in pairs(selection) do
+		if image.red then ret = true end
+		if image.blue then ret = true end
+		if image.green then ret = true end
+		if image.yellow then ret = true end
+		if image.purple then ret = true end
+	end
+	return ret
+end
+local function PreviousCollection()
+	if previous ~= nil then
+		previous = dt.gui.libs.collect.filter(previous)
+	end
+end
+local function CollectOnFolder(all_rules, all_active)
+	local images = dt.gui.selection()
+	if CheckSingleImage(images) then
+		return
+	end
+	local rules = {}
+	local rule = dt.gui.libs.collect.new_rule()
+	rule.mode = "DT_LIB_COLLECT_MODE_AND"
+	rule.data = images[1].path
+	rule.item = "DT_COLLECTION_PROP_FOLDERS"
+	table.insert(rules, rule)
+	if all_active then
+		for _,active_rule in pairs(rules) do
+			table.insert(all_rules, active_rule)
+		end
+		return all_rules
+	else
+		previous = dt.gui.libs.collect.filter(rules)
+	end
+end
+local function CollectOnColors(all_rules, all_active)
+	local images = dt.gui.selection()
+	if CheckSingleImage(images) then
+		return
+	end
+	if not CheckHasColorLabel(images) then
+		dt.print(_('select an image with an active color label'))
+		return
+	end
+	for _,image in pairs(images) do
+		local rules = {}
+		if image.red then
+			local red_rule = dt.gui.libs.collect.new_rule()
+			red_rule.mode = "DT_LIB_COLLECT_MODE_AND"
+			red_rule.data = "red"
+			red_rule.item = "DT_COLLECTION_PROP_COLORLABEL"
+			table.insert(rules, red_rule)
+		end
+		if image.blue then
+			local blue_rule = dt.gui.libs.collect.new_rule()
+			blue_rule.mode = "DT_LIB_COLLECT_MODE_AND"
+			blue_rule.data = "blue"
+			blue_rule.item = "DT_COLLECTION_PROP_COLORLABEL"
+			table.insert(rules, blue_rule)
+		end
+		if image.green then
+			local green_rule = dt.gui.libs.collect.new_rule()
+			green_rule.mode = "DT_LIB_COLLECT_MODE_AND"
+			green_rule.data = "green"
+			green_rule.item = "DT_COLLECTION_PROP_COLORLABEL"
+			table.insert(rules, green_rule)
+		end
+		if image.yellow then
+			local yellow_rule = dt.gui.libs.collect.new_rule()
+			yellow_rule.mode = "DT_LIB_COLLECT_MODE_AND"
+			yellow_rule.data = "yellow"
+			yellow_rule.item = "DT_COLLECTION_PROP_COLORLABEL"
+			table.insert(rules, yellow_rule)
+		end
+		if image.purple then
+			local purple_rule = dt.gui.libs.collect.new_rule()
+			purple_rule.mode = "DT_LIB_COLLECT_MODE_AND"
+			purple_rule.data = "purple"
+			purple_rule.item = "DT_COLLECTION_PROP_COLORLABEL"
+			table.insert(rules, purple_rule)
+		end
+		if all_active then
+			for _,active_rule in pairs(rules) do
+				table.insert(all_rules, active_rule)
+			end
+			return all_rules
+		else
+			previous = dt.gui.libs.collect.filter(rules)
+		end
+	end
+end
+local function CollectOnAll_AND()
+	local images = dt.gui.selection()
+	if CheckSingleImage(images) then
+		return
+	end
+	local rules = {}
+	if dt.preferences.read('module_CollectHelper','folder','bool') then
+		rules = CollectOnFolder(rules, true)
+	end
+	if dt.preferences.read('module_CollectHelper','colors','bool') then
+		rules = CollectOnColors(rules, true)
+	end
+	previous = dt.gui.libs.collect.filter(rules)
+end
+
+-- GUI --
+dt.gui.libs.image.register_action(
+	_("collect: previous"),
+	function() PreviousCollection() end,
+	_("Sets the Collect parameters to be the previously active parameters")
+)
+if dt.preferences.read('module_CollectHelper','folder','bool') then
+	dt.gui.libs.image.register_action(
+		_("collect: folder"),
+		function() CollectOnFolder(_ , false) end,
+		_("Sets the Collect parameters to be the selected images's folder")
+	)
+end
+if dt.preferences.read('module_CollectHelper','colors','bool') then
+	dt.gui.libs.image.register_action(
+		_("collect: color label(s)"),
+		function() CollectOnColors(_ , false) end,
+		_("Sets the Collect parameters to be the selected images's color label(s)")
+	)
+end
+if dt.preferences.read('module_CollectHelper','all_and','bool') then
+	dt.gui.libs.image.register_action(
+		_("collect: all (AND)"),
+		function() CollectOnAll_AND() end,
+		_("Sets the Collect parameters based on all activated CollectHelper options")
+	)
+end
+
+-- PREFERENCES --
+dt.preferences.register("module_CollectHelper", "all_and",	-- name
+	"bool",	-- type
+	_('CollectHelper: All'),	-- label
+	_('Will create a collect parameter set that utelizes all enabled CollectHelper types (AND)'),	-- tooltip
+	true	-- default
+)
+dt.preferences.register("module_CollectHelper", "colors",	-- name
+	"bool",	-- type
+	_('CollectHelper: Color Label(s)'),	-- label
+	_('Enable the button that allows you to swap to a collection based on selected image\'s COLOR LABEL(S)'),	-- tooltip
+	true	-- default
+)
+dt.preferences.register("module_CollectHelper", "folder",	-- name
+	"bool",	-- type
+	_('CollectHelper: Folder'),	-- label
+	_('Enable the button that allows you to swap to a collection based on selected image\'s FOLDER location'),	-- tooltip
+	true	-- default
+)