Predložak:Kronologija iPod modela

local p = {}

local function esc(s)

   if not s then return "" end
   return s:gsub("&","&"):gsub("<","<"):gsub(">",">")

end

local function yearToX(year, minYear, scale, startX)

   return startX + (year - minYear) * scale

end

local function yearToY(year, minYear, scale, startY)

   return startY + (year - minYear) * scale

end

function p.render(frame)

   local args = frame:getParent().args

   -- osnovne postavke
   local minYear = tonumber(args.minYear) or 2000
   local maxYear = tonumber(args.maxYear) or 2030
   local scale   = tonumber(args.scale)   or 60
   local orientation = (args.orientation or "horizontal"):lower()

   local startMain = 60
   local padding   = 80

   local svg = {}

   ---------------------------------------------------------
   -- VERTIKALNI TIMELINE
   ---------------------------------------------------------
   if orientation == "vertical" then
       local height = startMain + (maxYear - minYear) * scale + padding
       if height < 300 then height = 300 end

       table.insert(svg, string.format(
           '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 600 %d">',
           height
       ))
       table.insert(svg, '<rect x="0" y="0" width="100%" height="100%" fill="white" />')

       -- vremenska os
       table.insert(svg, '<g font-family="sans-serif" font-size="10" fill="#555">')
       local yEnd = yearToY(maxYear, minYear, scale, startMain)
       table.insert(svg, string.format(
           '<line x1="80" y1="%d" x2="80" y2="%d" stroke="#aaa" />',
           startMain, yEnd
       ))

       for y = minYear, maxYear do
           local yy = yearToY(y, minYear, scale, startMain)
           table.insert(svg, string.format('<text x="50" y="%d">%d</text>', yy + 4, y))
       end
       table.insert(svg, '</g>')

       -- redovi
       local rowIndex = 1
       while args["row" .. rowIndex .. "_label"] do
           local label = args["row" .. rowIndex .. "_label"]
           local x     = tonumber(args["row" .. rowIndex .. "_x"]) or (120 + (rowIndex - 1) * 120)

           table.insert(svg, string.format(
               '<text x="%d" y="40" font-family="sans-serif" font-size="11" fill="#333">%s</text>',
               x, esc(label)
           ))

           local blockIndex = 1
           while args[string.format("row%d_block%d_start", rowIndex, blockIndex)] do
               local start = tonumber(args[string.format("row%d_block%d_start", rowIndex, blockIndex)])
               local stop  = tonumber(args[string.format("row%d_block%d_end",   rowIndex, blockIndex)]) or maxYear
               local text  = args[string.format("row%d_block%d_label", rowIndex, blockIndex)] or ""
               local tip   = args[string.format("row%d_block%d_tip",   rowIndex, blockIndex)]
               local icon  = args[string.format("row%d_block%d_icon",  rowIndex, blockIndex)] or ""
               local col   = args[string.format("row%d_block%d_color", rowIndex, blockIndex)] or "#cccccc"

               if not tip or tip == "" then
                   tip = string.format("%s (%s–%s)", text, tostring(start), tostring(stop))
               end

               local y1 = yearToY(start, minYear, scale, startMain)
               local y2 = yearToY(stop,  minYear, scale, startMain)
               local h  = y2 - y1
               if h < 6 then h = 6 end

               table.insert(svg, '<g font-family="sans-serif" font-size="9" fill="#000">')
               table.insert(svg, string.format(
                   '<rect x="%d" y="%d" width="90" height="%d" fill="%s"><title>%s</title></rect>',
                   x - 10, y1, h, esc(col), esc(tip)
               ))

               local labelText = icon ~= "" and (icon .. " " .. esc(text)) or esc(text)

               table.insert(svg, string.format(
                   '<text x="%d" y="%d" transform="rotate(90 %d %d)">%s</text>',
                   x + 5, y1 + h/2, x + 5, y1 + h/2, labelText
               ))
               table.insert(svg, '</g>')

               blockIndex = blockIndex + 1
           end

           rowIndex = rowIndex + 1
       end

       table.insert(svg, '</svg>')
       return table.concat(svg, "\n")
   end

   ---------------------------------------------------------
   -- HORIZONTALNI TIMELINE
   ---------------------------------------------------------
   local width = startMain + (maxYear - minYear) * scale + padding
   if width < 400 then width = 400 end

   table.insert(svg, string.format(
       '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 %d 300">',
       width
   ))
   table.insert(svg, '<rect x="0" y="0" width="100%" height="100%" fill="white" />')

   -- vremenska os
   table.insert(svg, '<g font-family="sans-serif" font-size="10" fill="#555">')
   local xEnd = yearToX(maxYear, minYear, scale, startMain)
   table.insert(svg, string.format(
       '<line x1="%d" y1="30" x2="%d" y2="30" stroke="#aaa" />',
       startMain, xEnd
   ))

   for y = minYear, maxYear do
       local xx = yearToX(y, minYear, scale, startMain)
       table.insert(svg, string.format('<text x="%d" y="25">%d</text>', xx, y))
   end
   table.insert(svg, '</g>')

   -- redovi
   local rowIndex = 1
   while args["row" .. rowIndex .. "_label"] do
       local label = args["row" .. rowIndex .. "_label"]
       local y     = tonumber(args["row" .. rowIndex .. "_y"]) or (50 + rowIndex * 40)

       table.insert(svg, string.format(
           '<text x="10" y="%d" font-family="sans-serif" font-size="11" fill="#333">%s</text>',
           y, esc(label)
       ))

       local blockIndex = 1
       while args[string.format("row%d_block%d_start", rowIndex, blockIndex)] do
           local start = tonumber(args[string.format("row%d_block%d_start", rowIndex, blockIndex)])
           local stop  = tonumber(args[string.format("row%d_block%d_end",   rowIndex, blockIndex)]) or maxYear
           local text  = args[string.format("row%d_block%d_label", rowIndex, blockIndex)] or ""
           local tip   = args[string.format("row%d_block%d_tip",   rowIndex, blockIndex)]
           local icon  = args[string.format("row%d_block%d_icon",  rowIndex, blockIndex)] or ""
           local col   = args[string.format("row%d_block%d_color", rowIndex, blockIndex)] or "#cccccc"

           if not tip or tip == "" then
               tip = string.format("%s (%s–%s)", text, tostring(start), tostring(stop))
           end

           local x1 = yearToX(start, minYear, scale, startMain)
           local x2 = yearToX(stop,  minYear, scale, startMain)
           local w  = x2 - x1
           if w < 6 then w = 6 end

           table.insert(svg, '<g font-family="sans-serif" font-size="9" fill="#000">')
           table.insert(svg, string.format(
               '<rect x="%d" y="%d" width="%d" height="14" fill="%s"><title>%s</title></rect>',
               x1, y - 10, w, esc(col), esc(tip)
           ))

           local labelText = icon ~= "" and (icon .. " " .. esc(text)) or esc(text)

           table.insert(svg, string.format(
               '<text x="%d" y="%d">%s</text>',
               x1 + 3, y, labelText
           ))
           table.insert(svg, '</g>')

           blockIndex = blockIndex + 1
       end

       rowIndex = rowIndex + 1
   end

   table.insert(svg, '</svg>')
   return table.concat(svg, "\n")

end

return p