Zsolt Tasnadi
cb19251556
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82 lines
2.5 KiB
Lua
82 lines
2.5 KiB
Lua
--- @section UI
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--- Draws the top bar.
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--- @within UI
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--- @param title string The title text to display.<br/>
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function UI.draw_top_bar(title)
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rect(0, 0, Config.screen.width, 10, Config.colors.dark_grey)
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Print.text(title, 3, 2, Config.colors.light_blue)
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end
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--- Draws a menu.
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--- @within UI
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--- @param items table A table of menu items.<br/>
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--- @param selected_item number The index of the currently selected item.<br/>
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--- @param x number The x-coordinate for the menu.<br/>
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--- @param y number The y-coordinate for the menu.<br/>
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function UI.draw_menu(items, selected_item, x, y)
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for i, item in ipairs(items) do
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local current_y = y + (i-1)*10
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if i == selected_item then
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Print.text(">", x - 8, current_y, Config.colors.light_blue)
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end
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Print.text(item.label, x, current_y, Config.colors.light_blue)
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end
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end
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--- Updates menu selection.
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--- @within UI
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--- @param items table A table of menu items.<br/>
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--- @param selected_item number The current index of the selected item.<br/>
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--- @return number selected_item The updated index of the selected item.
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function UI.update_menu(items, selected_item)
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if Input.up() then
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Audio.sfx_beep()
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selected_item = selected_item - 1
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if selected_item < 1 then
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selected_item = #items
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end
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elseif Input.down() then
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Audio.sfx_beep()
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selected_item = selected_item + 1
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if selected_item > #items then
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selected_item = 1
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end
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end
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return selected_item
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end
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--- Wraps text.
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--- @within UI
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--- @param text string The text to wrap.<br/>
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--- @param max_chars_per_line number The maximum characters per line.<br/>
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--- @return result table A table of wrapped lines.
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function UI.word_wrap(text, max_chars_per_line)
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if text == nil then return {""} end
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local lines = {}
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for input_line in (text .. "\n"):gmatch("(.-)\n") do
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local current_line = ""
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local words_in_line = 0
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for word in input_line:gmatch("%S+") do
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words_in_line = words_in_line + 1
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if #current_line == 0 then
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current_line = word
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elseif #current_line + #word + 1 <= max_chars_per_line then
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current_line = current_line .. " " .. word
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else
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table.insert(lines, current_line)
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current_line = word
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end
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end
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if words_in_line > 0 then
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table.insert(lines, current_line)
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else
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table.insert(lines, "")
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end
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end
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if #lines == 0 then
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return {""}
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end
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return lines
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end
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