88 lines
2.0 KiB
Lua
88 lines
2.0 KiB
Lua
--- @alias FontVariant "smallest" | "small" | "medium" | "large" | "headline"
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--- @class TextTheme
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--- @field private _sizes {[FontVariant]: integer}
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local theme = {
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_sizes = {
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smallest = 10,
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small = 12,
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medium = 14,
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large = 16,
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headline = 20,
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}
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}
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theme.__index = theme
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--- @param loader fun(size: integer): love.Font?
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function theme.new(loader)
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local t = {}
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for tag, size in pairs(theme._sizes) do
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local f = loader(size)
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if not f then return nil end
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t[tag] = f
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end
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return setmetatable(t, theme)
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end
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--- @param variant FontVariant
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--- @return love.Font
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function theme:getVariant(variant)
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return self[variant]
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end
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----------------------------------------------------------
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--- A singleton to handle fonts
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--- @class FontManager
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--- @field private _themes table
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local FontManager = {
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_themes = {}
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}
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--- @param name string
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--- @param size integer
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function FontManager.newFont(name, size)
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local err = function()
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print("[FontManager]: font " .. name .. " not found!")
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end
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local fontDir = Tree.assets.files.fonts[name]
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if not fontDir then return err() end
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local font = fontDir.font
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if not font then return err() end
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return love.graphics.newFont(font, size)
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end
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--- @param name string
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--- @return TextTheme?
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function FontManager:loadTheme(name)
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self._themes[name] = theme.new(
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function(size)
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return self.newFont(name, size)
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end
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)
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return self._themes[name]
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end
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--- @param name string
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--- @return TextTheme?
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function FontManager:getTheme(name)
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return self._themes[name]
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end
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--- initial setup
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--- @param defaultFontName string
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function FontManager:load(defaultFontName)
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local t = self:loadTheme(defaultFontName)
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if not t then
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print("[FontManager]: default font " .. defaultFontName .. " is missing")
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return self
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end
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local f = t:getVariant("medium")
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love.graphics.setFont(f)
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return self
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end
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return FontManager
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