Module:Location map

Documentation for this module may be created at Module:Location map/doc

local p = {}

local getArgs = require('Module:Arguments').getArgs

local function round(n, digits)
	local mult = math.pow(10, digits)
	return math.floor(n * mult + 0.5) / mult
end

local function getMapParams(map, frame)
	local success, mapData = pcall(mw.loadData, 'Module:Location map/data/' .. map)
	if success then
		return function(name, params)
			if mapData[name] == nil then
				return ''
			elseif params then
				return mw.message.newRawMessage(mapData[name], unpack(params)):plain()
			else
				return mapData[name]
			end
		end
	else
		local cache = {}
		return function(name, params)
			if params then
				return frame:expandTemplate{title = 'Location map ' .. map, args = { name, unpack(params) }}
			else
				if cache[name] == nil then
					cache[name] = frame:expandTemplate{title = 'Location map ' .. map, args = { name }}
				end
				return cache[name]
			end
		end
	end
end

local function decdeg(degrees, minutes, seconds, hemisphere, digits, decimal)
	if degrees == nil then
		return tonumber(decimal)
	end
	decimal = (degrees or 0) + (minutes or 0)/60 + (seconds or 0)/3600
	if hemisphere == 'W' or hemisphere == 'w' or hemisphere == 'S' or  hemisphere == 's' then
		decimal = -decimal
	end
	if digits == nil then
		digits = 7
	end
	return round(decimal, digits)
end

function p.plustop(frame, args) -- {{location map+/top}}
	if not args then
		args = getArgs(frame)
	end
	local map = getMapParams(args[1], frame)
	local retval = ''
	if args.float == 'center' then
		retval = retval .. '<div class="center">'
	end
	retval = retval .. '<div '
	local width
	if args.width then
		width = mw.ustring.gsub(args.width, 'px', '')
	else
		width = round((args.default_width or 240) * (tonumber(map('defaultscale')) or 1), 0)
	end
	if args.caption then
		retval = retval .. 'class="thumb '
		if args.float == '"left"' or args.float == 'left' then
			retval = retval .. 'tleft'
		elseif args.float == '"center"' or args.float == 'center' or args.float == '"none"' or args.float == 'none' then
			retval = retval .. 'tnone'
		else
			retval = retval .. 'tright'
		end
		retval = retval .. '"'
	else
		retval = retval .. 'style="width:' .. width .. 'px; '
		if args.float == '"left"' or args.float == 'left' then
			retval = retval .. 'float: left; clear: left'
		elseif args.float == '"center"' or args.float == 'center' then
			retval = retval .. 'float: none; clear: both; margin-left: auto; margin-right: auto'
		elseif args.float == '"none"' or args.float == 'none' then
			retval = retval .. 'float: none; clear: none'
		else
			retval = retval .. 'float: right; clear: right'
		end
		retval = retval .. '"'
	end
	retval = retval .. '><div '
	if args.caption then
		retval = retval .. 'class="thumbinner" style="width:' .. (width + 2) .. 'px; '
		if args.border == 'none' then
			retval = retval .. 'border: none;'
		elseif args.border then
			retval = retval .. 'border-color:' .. args.border .. ';'
		end
		retval = retval .. '"'
	else
		retval = retval .. 'style="width:' .. width .. 'px; padding:0"'
	end
	retval = retval .. '><div style="position: relative; '
	if args.caption and args.border ~= 'none' then
		retval = retval .. 'border: 1px solid lightgray'
	end
	retval = retval .. '">[[File:'
	local AlternativeMap
	if args.AlternativeMap then
		AlternativeMap = args.AlternativeMap
	elseif args.relief and map('image1') ~= '' then
		AlternativeMap = map('image1')
	else
		AlternativeMap = map('image')
	end
	retval = retval .. AlternativeMap .. '|' .. width .. 'px|'
	if args.alt then
		retval = retval .. args.alt
	else
		retval = retval .. (args.label or mw.title.getCurrentTitle().text) .. ' is located in ' .. map('name')
	end
	retval = retval .. ']]'
	if args.overlay_image then
		retval = retval .. '<div style="position:absolute; top: 0; left: 0">[[File:' .. args.overlay_image .. '|' .. width .. 'px|link=File:' .. AlternativeMap .. ']]</div>'
	end
	return retval
end

function p.plusbottom(frame, args) -- {{location map+/bottom}}
	if not args then
		args = getArgs(frame)
	end
	local map = getMapParams(args[1], frame)
	local retval = ''
	retval = retval .. '</div><div ' .. (args.caption and 'class="thumbcaption"' or 'style="font-size: 90%; padding-top:3px"') .. '>'
	local caption = frame.args.caption or frame:getParent().args.caption
	if caption and not args.caption_undefined then
		retval = retval .. mw.text.trim(caption)
	else
		retval = retval .. (args.label or mw.title.getCurrentTitle().text) .. ' (' .. map('name') .. ')'
	end
	retval = retval .. '</div></div></div>'
	if args.float == 'center' then
		retval = retval .. '</div>'
	end
	return retval
end

function p.plus(frame) -- {{location map+}}
	local args = getArgs(frame)
	return p.plustop(frame, args) .. (args.places or '') .. p.plusbottom(frame, args)
end

function p.tilde(frame) -- {{location map~}}
	local args = getArgs(frame)
	local retval = '<div style="position:absolute;top:'
	local map = getMapParams(args[1], frame)
	if map('y') ~= '' then
		retval = retval .. frame:callParserFunction('#expr', map('y', { decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, nil, args.lat), decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, nil, args.long) }))
	else
		retval = retval .. round(100 * (map('top') - decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, nil, args.lat) ) / (map('top') - map('bottom')), 1)
	end
	retval = retval .. '%;left:'
	local x
	if map('x') ~= '' then
		x = frame:callParserFunction('#expr', map('x', { decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, nil, args.lat), decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, nil, args.long) }))
	else
		local crosses180_correction = map('crosses180') ~= '' and args.lon_dir == 'W' and (-36000/(map('left') - map('right'))) or 0
		x = round(crosses180_correction + 100 * (decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, nil, args.long) - map('left')) / (map('right') - map('left')), 1)
	end
	retval = retval .. x .. '%;height:0;width:0;margin:0;padding:0"><div style="position:relative;text-align:center;'
	local marksize = tonumber(args.marksize) or tonumber(map('marksize')) or 8
	retval = retval .. 'left:-' .. round(marksize / 2, 0) .. 'px;top:-' .. round(marksize / 2, 0) .. 'px;width:' .. marksize .. 'px;font-size:' .. marksize .. 'px;line-height:0"'
	if args[2] then
		retval = retval .. ' title="' .. args[2] .. '"'
	end
	retval = retval .. '>'
	local mark = args.mark or map('mark')
	if mark == '' then mark = 'Red pog.svg' end
	retval = retval .. '[[File:' .. mark .. '|' .. marksize .. 'x' .. marksize .. 'px|' .. (args.label or mw.title.getCurrentTitle().text) .. '|link=' .. (args.link or '')
	if args.alt then
		retval = retval .. '|alt=' .. args.alt
	end
	retval = retval .. ']]'
	retval = retval .. '</div>'
	if args.label and args.position ~= 'none' then
		retval = retval .. '<div style="font-size:' .. (args.label_size or 90) .. '%;line-height:110%;position:relative;top:-1.5em;width:' .. (args.label_width or 6) .. 'em;'
		if args.position == 'left' then
			retval = retval .. 'left:-6.5em;text-align:right'
		elseif args.position == 'right' then
			retval = retval .. 'left:0.5em;text-align:left'
		elseif args.position == 'top' then
			retval = retval .. 'top:-2.65em;left:-3em;text-align:center'
		elseif args.position == 'bottom' then
			retval = retval .. 'top:-0.15em;left:-3em;text-align:center'
		elseif tonumber(x) > 70 then
			retval = retval .. 'left:-6.5em;text-align:right'
		else
			retval = retval .. 'left:0.5em;text-align:left'
		end
		retval = retval .. '"><span style="padding:1px'
		if args.background then
			retval = retval .. ';background-color:' .. args.background
		end
		retval = retval .. '">' .. args.label .. '</span></div>'
	end
	retval = retval .. '</div>'
	
	return retval
end

return p