add dedicated backend (WIP)

luigi/backend/love/font.lua

@@ -0,0 +1,65 @@
+local Font = setmetatable({}, { __call = function (self, ...)
+    local object = setmetatable({}, { __index = self })
+    return object, self.constructor(object, ...)
+end })
+
+local fontCache = {}
+
+function Font:constructor (path, size, color)
+    if not size then
+        size = 12
+    end
+    if not color then
+        color = { 0, 0, 0 }
+    end
+    local key = (path or '') .. '_' .. size
+
+    if not fontCache[key] then
+        if path then
+            fontCache[key] = love.graphics.newFont(path, size)
+        else
+            fontCache[key] = love.graphics.newFont(size)
+        end
+    end
+
+    self.loveFont = fontCache[key]
+    self.color = color
+end
+
+function Font:setAlignment (align)
+    self.align = align
+end
+
+function Font:setWidth (width)
+    self.width = width
+end
+
+function Font:getLineHeight ()
+    return self.loveFont:getHeight()
+end
+
+function Font:getAscender ()
+    return self.loveFont:getAscent()
+end
+
+function Font:getDescender ()
+    return self.loveFont:getDescent()
+end
+
+function Font:getAdvance (text)
+    return (self.loveFont:getWidth(text))
+end
+
+if love._version_minor < 10 then
+    function Font:getWrappedHeight (text)
+        local _, lines = self.loveFont:getWrap(text, self.width)
+        return lines * self.loveFont:getHeight()
+    end
+else
+    function Font:getWrappedHeight (text)
+        local _, lines = self.loveFont:getWrap(text, self.width)
+        return #lines * self.loveFont:getHeight()
+    end
+end
+
+return Font