Module:Overlay
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 | Uses Lua: |
Implements {{Overlay}}
-- this module implements [[Template:Overlay]]
local p = {}
local mArguments = require('Module:Arguments')
-- used to cache the calculated font color to avoid repeat calculations
local previous_backgroundcolor = ''
local fontcolor = ''
local function buildicon(n, form, lk, c, t)
local res
if form == 'text' then
return tostring(
mw.html.create('span')
:css('font-weight', 'bold')
:css('color', c)
:wikitext(n)
)
elseif form == 'color' or form == 'colour' then
return tostring(
mw.html.create('span')
:css('background-color', c)
:wikitext('  ')
)
else
-- check if the color is difference from the previous color
if c ~= previous_backgroundcolor then
-- color changed, so look up the best font color
local greatercontrast = require('Module:Color contrast')._greatercontrast
fontcolor = greatercontrast{c, 'white', 'black', bias = 1.3}
-- update the previous value for the next check
previous_backgroundcolor = c
end
-- build the inner span for the icon
local span = mw.html.create('span')
:css('color', fontcolor)
:css('font-size', '88%')
:css('font-weight', 'bold')
:attr('title', t)
:wikitext(n)
-- build the outer div
local div = mw.html.create('div')
:css('display', 'inline-block')
:css('width', 'auto')
:css('height', 'auto')
:css('text-align', 'center')
:css('padding', ((tonumber(n) or 0) < 10) and '0px 4px' or '0px 2px')
:css('vertical-align', 'middle')
:css('border-radius', '3px')
:css('background-color', c)
-- link the inner span if requested and insert in the div
if lk ~= '' then
div:wikitext('[[:' .. lk .. '|' .. tostring(span) .. ']]')
else
div:wikitext(tostring(span))
end
-- convert to a string
return tostring(div)
end
end
local function buildlegend(data, cols, border, caption)
-- create the outer table to hold the columns
local root = mw.html.create('table')
:css('width', '100%')
:css('border', (border ~= 'no') and '1px #ccc solid' or '')
-- create the outer row which will contain the columns
local outerrow = root:tag('tr')
local percol = math.ceil((#data) / cols)
local k = 0
for j=1,cols do
-- create the outer cell to hold this column
local colcell = outerrow:tag('td')
:css('width', (math.floor(10/cols)/10) .. '%')
:css('vertical-align', 'top')
-- create the inner table to hold the entries in the column
local coltable = colcell:tag('table')
:css('width', '100%')
:css('font-size', '85%')
:css('line-height', '95%')
-- add the entries to the column
for l = 1,percol do
k = k + 1
if k <= #data then
local rdata = data[k]
local tr = coltable:tag('tr'):css('vertical-align','top')
tr:tag('td')
:css('width', '12px')
:css('text-align', 'right')
:css('padding-bottom', '2px')
:wikitext(rdata[1] or '')
tr:tag('td')
:css('padding-bottom', '2px')
:wikitext(rdata[2] or '')
end
end
end
return caption .. tostring(root)
end
local function buildlegenditem(im, lk, t)
local res = {im, ''}
if t ~= '' then
if lk ~= '' then
res[2] = '[[:' .. lk .. '|' .. t .. ']]'
else
res[2] = t
end
else
res[2] = '[[:' .. lk .. '|' .. lk .. ']]'
end
return res
end
function p.icon(frame)
local args = mArguments.getArgs(frame)
return tostring(
mw.html.create('div')
:css('display', 'inline-block')
:css('line-height', '95%')
:wikitext(buildicon(args['1'] or '',
args['form'] or 'icon',
args['link'] or '',
args['2'] or 'red',
args['tip'] or ''))
)
end
function p.main(frame)
local args = mArguments.getArgs(frame)
local image = args['image'] or ''
local width = tonumber(args['width'] or '500') or 500
local height = tonumber(args['height'] or '500') or 500
local columns = tonumber(args['columns'] or '3') or 3
local grid = ((args['grid'] or ''):lower() == 'yes') and 'yes' or 'no'
local legendbox = ((args['legendbox'] or ''):lower() == 'no') and 'no' or 'yes'
local overlay = (image == '') and 'no' or ( ((args['overlay'] or ''):lower() == 'no') and 'no' or 'yes' )
local float = args['float'] or 'center'
local border = ((args['border'] or ''):lower() == 'no') and 'no' or 'yes'
local padding = args['padding'] or ''
-- create the root table
local root = mw.html.create('table')
if float == 'center' or float == 'centre' then
root:css('margin-left', 'auto')
:css('margin-right', 'auto')
elseif float == 'right' then
root:css('float', 'right')
:css('clear', 'right')
:css('margin-left', '1em')
elseif float == 'left' then
root:css('float', 'left')
:css('clear', 'left')
:css('margin-right', '1em')
else
root:css('float', float)
end
if border == 'yes' then
root:css('border', '1px #ccc solid')
end
-- create a list of all the overlay numbers
local itemnums = {}
for k, v in pairs( args ) do
local i = tonumber(tostring(k):match( '^%s*overlay([%d]+)%s*$' ) or '-1')
if i > -1 then
table.insert(itemnums, i)
else
i = tonumber(tostring(k):match( '^%s*overlay([%d]+)tip%s*$' ) or '-1')
if i > -1 then
table.insert(itemnums, i)
end
end
end
-- sort to process in order
table.sort( itemnums )
-- remove duplicates
for k = 2,#itemnums do
if itemnums[k] == itemnums[k-1] then
table.remove(itemnums, k)
end
end
-- build the overlay markers and text
itemdata = {}
local colori = args['color'] or args['colour'] or 'red'
local formi = ''
for k = 1,#itemnums do
local i = itemnums[k]
formi = args['overlay' .. i .. 'form'] or formi
colori = args['overlay' .. i .. 'color'] or args['overlay' .. i .. 'colour'] or colori
local linki = args['overlay' .. i .. 'link'] or ''
local tipi = args['overlay' .. i .. 'tip'] or args['overlay' .. i] or ''
local overlayi = args['overlay' .. i] or args['overlay' .. i .. 'tip'] or ''
if (overlayi ~= '' or tipi ~= '') then
local imagei = buildicon(i, formi, linki, colori, tipi)
itemdata[k] = buildlegenditem(imagei, args['overlay' .. i .. 'link'] or '', overlayi)
end
end
-- create the overlay image
if image ~= '' then
local cell = root:tag('tr'):tag('td')
cell:attr('align', 'center')
if( padding ~= '' ) then
cell:css('padding', padding)
end
if( columns > 1 and legendbox == 'yes' ) then
cell:attr('colspan', columns)
end
local imagediv = cell:tag('div')
imagediv:css('position','relative')
:css('left', '0px')
:css('top', '0px')
:css('width', ((grid == 'yes') and 940 or width) .. 'px')
:css('height', ((grid == 'yes') and 940 or height) .. 'px')
if grid == 'yes' then
imagediv:tag('span')
:css('position', 'absolute')
:css('left', '0px')
:css('top', '0px')
:css('z-index', '2')
:wikitext('[[File:Grid 99, 100 int red 50 int yellow (940).svg|940px]]')
end
imagediv:tag('span')
:css('position', 'absolute')
:css('left', '0px')
:css('top', '0px')
:css('z-index', '0')
:css('width', width .. 'px')
:css('height', height .. 'px')
:wikitext('[[File:' .. image .. '|' .. width .. 'x' .. height .. 'px]]')
if overlay == 'yes' then
for k = 1,#itemnums do
local i = itemnums[k]
local imagei = (itemdata[k])[1]
for j =0,3 do
local overlayileftj = args['overlay' .. i .. 'left' .. ((j == 0) and '' or j)] or ''
local overlayitopj = args['overlay' .. i .. 'top' .. ((j == 0) and '' or j)] or ''
if overlayileftj ~= '' then
imagediv:tag('div')
:css('position', 'absolute')
:css('left', overlayileftj .. 'px')
:css('top', overlayitopj .. 'px')
:css('line-height', '95%')
:css('z-index', '1')
:wikitext(imagei)
end
end
end
end
end
-- Split the legend items into sub-legends
legend = {{}, {}, {}, {}, {}}
local jmax = itemnums[#itemnums]
for i=1,5 do
if args['legend' .. i .. 'start'] then
-- default is all items
j1 = 0
j2 = jmax
-- set start item number to (legendistart) or (legend(i-1)end + 1)
if args['legend' .. i .. 'start'] then
j1 = tonumber(args['legend' .. i .. 'start']) or j1
elseif args['legend' .. (i-1) .. 'end'] then
j1 = (tonumber(args['legend' .. (i-1) .. 'end']) or j1) + 1
end
-- set end item number to (legendiend) or (legend(i+1)start - 1)
if args['legend' .. i .. 'end'] then
j2 = tonumber(args['legend' .. i .. 'end']) or j2
elseif args['legend' .. (i+1) .. 'start'] then
j2 = (tonumber(args['legend' .. (i+1) .. 'start']) or j2) - 1
end
-- get the items within the range, marking them as they are used
for k=1,#itemnums do
j = itemnums[k]
if (j >= 0 and j >= j1 and j <= j2) then
table.insert(legend[i], itemdata[k])
itemnums[k] = -1
end
end
end
end
-- Add any left over items to the first legend
for k = 1,#itemnums do
if itemnums[k] >= 0 then
table.insert(legend[1], itemdata[k])
end
end
-- Build the legend
if columns > 0 then
for i = 1,5 do
local locallegend = legend[i]
if (locallegend and #locallegend > 0) then
local cell = root:tag('tr'):tag('td')
cell:wikitext(buildlegend(locallegend, columns, border, args['legend' .. i .. 'title'] or ''))
end
end
end
return tostring(root)
end
return p