Module:Location map
 | This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing. |
 | This Lua module is used on 435,000+ pages. To avoid large-scale disruption and unnecessary server load, any changes to this module should first be tested in its /sandbox or /testcases subpages. The tested changes can then be added to this page in one single edit. Please consider discussing any changes on the talk page before implementing them. |
Usage
[edit source]This module implements the {{Location map}} and {{Location map~}} templates. Please see the template pages for usage instructions.
Tracking/maintenance categories
[edit source]- Category:Location maps with different longitude and latitude precisions
- Category:Location maps with possible errors
require('Module:No globals')
local p = {}
local getArgs = require('Module:Arguments').getArgs
local function round(n, decimals)
local pow = 10^(decimals or 0)
return math.floor(n * pow + 0.5) / pow
end
function p.getMapParams(map, frame)
if not map then
error('The name of the location map definition to use must be specified', 2)
end
local moduletitle = mw.title.new('Module:Location map/data/' .. map)
if not moduletitle then
error('"' .. map .. '" is not a valid name for a location map definition', 2)
elseif moduletitle.exists then
local mapData = mw.loadData('Module:Location map/data/' .. map)
return function(name, params)
if name == nil then
return 'Module:Location map/data/' .. map
elseif mapData[name] == nil then
return ''
elseif params then
return mw.message.newRawMessage(tostring(mapData[name]), unpack(params)):plain()
else
return mapData[name]
end
end
elseif mw.title.new('Template:Location map ' .. map).exists then
local cache = {}
if type(frame) ~= 'table' or type(frame.expandTemplate) ~= 'function' then
error('A frame must be provided when using a legacy location map')
end
return function(name, params)
if params then
return frame:expandTemplate{title = 'Location map ' .. map, args = { name, unpack(params) }}
else
if name == nil then
return 'Template:Location map ' .. map
elseif cache[name] == nil then
cache[name] = frame:expandTemplate{title = 'Location map ' .. map, args = { name }}
end
return cache[name]
end
end
else
error('Unable to find the specified location map definition. Neither "Module:Location map/data/' .. map .. '" nor "Template:Location map ' .. map .. '" exists', 2)
end
end
function p.data(frame, args, map)
if not args then
args = getArgs(frame, {frameOnly = true})
end
if not map then
map = p.getMapParams(args[1], frame)
end
local params = {}
for k,v in ipairs(args) do
if k > 2 then
params[k-2] = v
end
end
return map(args[2], #params ~= 0 and params)
end
local hemisphereMultipliers = {
longitude = { W = -1, w = -1, E = 1, e = 1 },
latitude = { S = -1, s = -1, N = 1, n = 1 }
}
local function decdeg(degrees, minutes, seconds, hemisphere, decimal, direction)
if decimal then
if degrees then
error('Decimal and DMS degrees cannot both be provided for ' .. direction, 2)
elseif minutes then
error('Minutes can only be provided with DMS degrees for ' .. direction, 2)
elseif seconds then
error('Seconds can only be provided with DMS degrees for ' .. direction, 2)
elseif hemisphere then
error('A hemisphere can only be provided with DMS degrees for ' .. direction, 2)
end
local retval = tonumber(decimal)
if retval then
return retval
end
error('The value "' .. decimal .. '" provided for ' .. direction .. ' is not valid', 2)
elseif seconds and not minutes then
error('Seconds were provided for ' .. direction .. ' without minutes also being provided', 2)
elseif not degrees then
if minutes then
error('Minutes were provided for ' .. direction .. ' without degrees also being provided', 2)
elseif hemisphere then
error('A hemisphere was provided for ' .. direction .. ' without degrees also being provided', 2)
end
return nil
end
decimal = tonumber(degrees)
if not decimal then
error('The degree value "' .. degrees .. '" provided for ' .. direction .. ' is not valid', 2)
elseif minutes and not tonumber(minutes) then
error('The minute value "' .. minutes .. '" provided for ' .. direction .. ' is not valid', 2)
elseif seconds and not tonumber(seconds) then
error('The second value "' .. seconds .. '" provided for ' .. direction .. ' is not valid', 2)
end
decimal = decimal + (minutes or 0)/60 + (seconds or 0)/3600
if hemisphere then
local multiplier = hemisphereMultipliers[direction][hemisphere]
if not multiplier then
error('The hemisphere "' .. hemisphere .. '" provided for ' .. direction .. ' is not valid', 2)
end
decimal = decimal * multiplier
end
return decimal
end
-- effectively make removeBlanks false for caption and maplink, and true for everything else
-- if useWikidata is present but blank, convert it to false instead of nil
-- p.top, p.bottom, and their callers need to use this
function p.valueFunc(key, value)
if value then
value = mw.text.trim(value)
end
if value ~= '' or key == 'caption' or key == 'maplink' then
return value
elseif key == 'useWikidata' then
return false
end
end
local function getContainerImage(args, map)
if args.AlternativeMap then
return args.AlternativeMap
elseif args.relief and map('image1') ~= '' then
return map('image1')
else
return map('image')
end
end
function p.top(frame, args, map)
if not args then
args = getArgs(frame, {frameOnly = true, valueFunc = p.valueFunc})
end
if not map then
map = p.getMapParams(args[1], frame)
end
local width
if not args.width then
width = round((args.default_width or 240) * (tonumber(map('defaultscale')) or 1))
elseif mw.ustring.sub(args.width, -2) == 'px' then
width = mw.ustring.sub(args.width, 1, -3)
else
width = args.width
end
local retval = args.float == 'center' and '<div class="center">' or ''
if args.caption and args.caption ~= '' and args.border ~= 'infobox' then
retval = retval .. '<div class="noviewer 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 .. '"><div 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 .. '"><div style="position:relative;width:' .. width .. 'px' .. (args.border ~= 'none' and ';border:1px solid lightgray">' or '">')
else
retval = retval .. '<div 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 .. '"><div style="width:' .. width .. 'px;padding:0"><div style="position:relative;width:' .. width .. 'px">'
end
local image = getContainerImage(args, map)
retval = string.format(
'%s[[File:%s|%spx|%s%s]]',
retval,
image,
width,
args.alt or ((args.label or mw.title.getCurrentTitle().text) .. ' is located in ' .. map('name')),
args.maplink and ('|link=' .. args.maplink) or ''
)
if args.overlay_image then
return retval .. '<div style="position:absolute;top:0;left:0">[[File:' .. args.overlay_image .. '|' .. width .. 'px]]</div>'
else
return retval
end
end
function p.bottom(frame, args, map)
if not args then
args = getArgs(frame, {frameOnly = true, valueFunc = p.valueFunc})
end
if not map then
map = p.getMapParams(args[1], frame)
end
local retval = '</div>'
if not args.caption or args.border == 'infobox' then
if args.border then
retval = retval .. '<div>'
else
retval = retval .. '<div style="font-size:90%;padding-top:3px">'
end
retval = retval
.. (args.caption or (args.label or mw.title.getCurrentTitle().text) .. ' (' .. map('name') .. ')')
.. '</div>'
elseif args.caption ~= '' then
-- This is not the pipe trick. We're creating a link with no text on purpose, so that CSS can give us a nice image
retval = retval .. '<div class="thumbcaption"><div class="magnify">[[:File:' .. getContainerImage(args, map) .. '| ]]</div>' .. args.caption .. '</div>'
end
if args.switcherLabel then
retval = retval .. '<span class="switcher-label" style="display:none">' .. args.switcherLabel .. '</span>'
elseif args.autoSwitcherLabel then
retval = retval .. '<span class="switcher-label" style="display:none">Show map of ' .. map('name') .. '</span>'
end
retval = retval .. '</div></div>'
if args.caption_undefined then
mw.log('Removed parameter caption_undefined used.')
local parent = frame:getParent()
if parent then
mw.log('Parent is ' .. parent:getTitle())
end
mw.logObject(args, 'args')
retval = retval .. '[[Category:Location maps with possible errors|Page using removed parameter]]'
end
if map('skew') ~= '' or map('lat_skew') ~= '' or map('crosses180') ~= '' or map('type') ~= '' then
mw.log('Removed parameter used in map definition ' .. map())
retval = retval .. '[[Category:Location maps with possible errors|Map using removed parameter]]'
end
if string.find(map('name'), '|', 1, true) then
mw.log('Pipe used in name of map definition ' .. map())
retval = retval .. '[[Category:Location maps with possible errors|Name containing pipe]]'
end
if args.float == 'center' then
retval = retval .. '</div>'
end
return retval
end
local function markOuterDiv(x, y, imageDiv, labelDiv)
return mw.html.create('div')
:cssText('position:absolute;top:' .. round(y, 3) .. '%;left:' .. round(x, 3) .. '%')
:node(imageDiv)
:node(labelDiv)
end
local function markImageDiv(mark, marksize, label, link, alt, title)
local builder = mw.html.create('div')
:cssText('position:absolute;left:-' .. round(marksize / 2) .. 'px;top:-' .. round(marksize / 2) .. 'px;line-height:0')
:attr('title', title)
if marksize ~= 0 then
builder:wikitext(string.format(
'[[File:%s|%dx%dpx|%s|link=%s%s]]',
mark,
marksize,
marksize,
label,
link,
alt and ('|alt=' .. alt) or ''
))
end
return builder
end
local function markLabelDiv(label, label_size, label_width, position, background, x, marksize)
if tonumber(label_size) == 0 then
return mw.html.create('div'):cssText('font-size:0%;position:absolute'):wikitext(label)
end
local builder = mw.html.create('div')
:cssText('font-size:' .. label_size .. '%;line-height:110%;position:absolute;width:' .. label_width .. 'em')
local distance = round(marksize / 2 + 1)
local spanCss
if position == 'top' then -- specified top
builder:cssText('bottom:' .. distance .. 'px;left:' .. (-label_width / 2) .. 'em;text-align:center')
elseif position == 'bottom' then -- specified bottom
builder:cssText('top:' .. distance .. 'px;left:' .. (-label_width / 2) .. 'em;text-align:center')
elseif position == 'left' or (tonumber(x) > 70 and position ~= 'right') then -- specified left or autodetected to left
builder:cssText('top:-0.75em;right:' .. distance .. 'px;text-align:right')
spanCss = 'float:right'
else -- specified right or autodetected to right
builder:cssText('top:-0.75em;left:' .. distance .. 'px;text-align:left')
spanCss = 'float:left'
end
builder = builder:tag('span')
:cssText('padding:1px')
:cssText(spanCss)
:wikitext(label)
if background then
builder:cssText('background-color:' .. background)
end
return builder:done()
end
local function getX(longitude, left, right)
local width = (right - left) % 360
if width == 0 then
width = 360
end
local distanceFromLeft = (longitude - left) % 360
-- the distance needed past the map to the right equals distanceFromLeft - width. the distance needed past the map to the left equals 360 - distanceFromLeft. to minimize page stretching, go whichever way is shorter
if distanceFromLeft - width / 2 >= 180 then
distanceFromLeft = distanceFromLeft - 360
end
return 100 * distanceFromLeft / width
end
local function getY(latitude, top, bottom)
return 100 * (top - latitude) / (top - bottom)
end
function p.mark(frame, args, map)
if not args then
args = getArgs(frame, {wrappers = 'Template:Location map~'})
end
if not map then
map = p.getMapParams(args[1], frame)
end
local x, y, longitude, latitude
longitude = decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, args.long, 'longitude')
latitude = decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, args.lat, 'latitude')
if not longitude and not latitude and args.useWikidata then
-- If they didn't provide either coordinate, try Wikidata. If they provided one but not the other, don't.
local entity = mw.wikibase.getEntity()
if entity and entity.claims and entity.claims.P625 and entity.claims.P625[1].mainsnak.snaktype == 'value' then
local value = entity.claims.P625[1].mainsnak.datavalue.value
longitude, latitude = value.longitude, value.latitude
end
end
if not longitude then
error('No value was provided for longitude')
end
if not latitude then
error('No value was provided for latitude')
end
local builder = mw.html.create()
if (not args.lon_deg) ~= (not args.lat_deg) then
builder:wikitext('[[Category:Location maps with different longitude and latitude precisions|Degrees]]')
elseif (not args.lon_min) ~= (not args.lat_min) then
builder:wikitext('[[Category:Location maps with different longitude and latitude precisions|Minutes]]')
elseif (not args.lon_sec) ~= (not args.lat_sec) then
builder:wikitext('[[Category:Location maps with different longitude and latitude precisions|Seconds]]')
elseif (not args.lon_dir) ~= (not args.lat_dir) then
builder:wikitext('[[Category:Location maps with different longitude and latitude precisions|Hemisphere]]')
elseif (not args.long) ~= (not args.lat) then
builder:wikitext('[[Category:Location maps with different longitude and latitude precisions|Decimal]]')
end
if args.skew or args.lon_shift or args.markhigh then
mw.log('Removed parameter used in invocation.')
local parent = frame:getParent()
if parent then
mw.log('Parent is ' .. parent:getTitle())
end
mw.logObject(args, 'args')
builder:wikitext('[[Category:Location maps with possible errors|Page using removed parameter]]')
end
if map('x') ~= '' then
x = tonumber(mw.ext.ParserFunctions.expr(map('x', { latitude, longitude })))
else
x = tonumber(getX(longitude, map('left'), map('right')))
end
if map('y') ~= '' then
y = tonumber(mw.ext.ParserFunctions.expr(map('y', { latitude, longitude })))
else
y = tonumber(getY(latitude, map('top'), map('bottom')))
end
if (x < 0 or x > 100 or y < 0 or y > 100) and not args.outside then
mw.log('Mark placed outside map boundaries without outside flag set. x = ' .. x .. ', y = ' .. y)
local parent = frame:getParent()
if parent then
mw.log('Parent is ' .. parent:getTitle())
end
mw.logObject(args, 'args')
builder:wikitext('[[Category:Location maps with possible errors|Outside flag not set with mark outside map]]')
end
local mark = args.mark or map('mark')
if mark == '' then
mark = 'Red pog.svg'
end
local marksize = tonumber(args.marksize) or tonumber(map('marksize')) or 8
local imageDiv = markImageDiv(mark, marksize, args.label or mw.title.getCurrentTitle().text, args.link or '', args.alt, args[2])
local labelDiv
if args.label and args.position ~= 'none' then
labelDiv = markLabelDiv(args.label, args.label_size or 90, args.label_width or 6, args.position, args.background, x, marksize)
end
return builder:node(markOuterDiv(x, y, imageDiv, labelDiv))
end
function p.main(frame, args, map)
if not args then
args = getArgs(frame, {wrappers = 'Template:Location map', valueFunc = p.valueFunc})
end
if args.useWikidata == nil then
args.useWikidata = true
end
if not map then
if args[1] then
map = {}
for mapname in string.gmatch(args[1], '[^#]+') do
map[#map + 1] = p.getMapParams(mapname, frame)
end
if #map == 1 then map = map[1] end
else
map = p.getMapParams('World', frame)
end
end
if type(map) == 'table' then
local outputs = {}
args.autoSwitcherLabel = true
for k,v in ipairs(map) do
outputs[k] = p.main(frame, args, v)
end
return '<div class="switcher-container">' .. table.concat(outputs) .. '</div>'
else
return p.top(frame, args, map) .. tostring( p.mark(frame, args, map) ) .. p.bottom(frame, args, map)
end
end
return p