cartographer/formspec.lua

local gui = {};

function gui.bg9(args)
    return string.format("background9[%f,%f;%f,%f;%s;%s;%s]",
                          args.x, args.y,
                          args.w, args.h,
                          args.skin.texture .. ".png",
                          args.fullsize or false,
                          tostring(args.skin.radius));
end

function gui.button(args)
    local data = string.format("button[%f,%f;%f,%f;%s;%s]", args.x, args.y, args.w, args.h, args.id, args.text);

    if args.tooltip then
        data = data .. gui.tooltip {
            id = args.id,
            text = args.tooltip
        };
    end

    return data;
end

function gui.image_button(args)
    local data = string.format("image_button[%f,%f;%f,%f;%s;%s;%s]",
                                args.x, args.y,
                                args.w, args.h,
                                args.image,
                                args.id,
                                args.text or "");

    if args.tooltip then
        data = data .. gui.tooltip {
            id = args.id,
            text = args.tooltip
        };
    end

    return data;
end

function gui.label(args)
    return string.format("label[%f,%f;%s]", args.x, args.y, args.text);
end

function gui.style_internal(selector, properties)
    local data = "[" .. selector;
    for name,value in pairs(properties) do
        data = data .. string.format(";%s=%s", name, tostring(value));
    end
    return data .. "]";
end

function gui.style(args)
    return "style" .. gui.style_internal(args.selector, args.properties);
end

function gui.style_type(args)
    return "style_type" .. gui.style_internal(args.selector, args.properties);
end

function gui.tooltip(args)
    return string.format("tooltip[%s;%s]", args.id, args.text);
end

return gui;