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luigi/backend/love/text.lua

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+local ROOT = (...):gsub('[^.]*.[^.]*.[^.]*$', '')
+local REL = (...):gsub('[^.]*$', '')
+
+local Multiline = require(ROOT .. 'multiline')
+
+local Text = setmetatable({}, { __call = function (self, ...)
+    local object = setmetatable({}, { __index = self })
+    return object, self.constructor(object, ...)
+end })
+
+local function renderSingle (self, x, y, font, text, color)
+    love.graphics.push('all')
+    love.graphics.setColor(color or { 0, 0, 0 })
+    love.graphics.setFont(font.loveFont)
+    love.graphics.print(text, x, y)
+    love.graphics.pop()
+
+    self.height = font:getLineHeight()
+    self.width = font:getAdvance(text)
+end
+
+local function renderMulti (self, x, y, font, text, color, align, limit)
+    local lines = Multiline.wrap(font, text, limit)
+    local lineHeight = font:getLineHeight()
+    local height = #lines * lineHeight
+
+    love.graphics.push('all')
+    love.graphics.setColor(color or { 0, 0, 0 })
+    love.graphics.setFont(font.loveFont)
+
+    for index, line in ipairs(lines) do
+        local text = table.concat(line)
+        local top = (index - 1) * lineHeight
+        local w = line.width
+
+        if align == 'left' then
+            love.graphics.print(text, x, top + y)
+        elseif align == 'right' then
+            love.graphics.print(text, limit - w + x, top + y)
+        elseif align == 'center' then
+            love.graphics.print(text, (limit - w) / 2 + x, top + y)
+        end
+    end
+
+    love.graphics.pop()
+
+    self.height = height
+    self.width = limit
+end
+
+function Text:constructor (font, text, color, align, limit)
+    if limit then
+        function self:draw (x, y)
+            return renderMulti(self, x, y, font, text, color, align, limit)
+        end
+    else
+        function self:draw (x, y)
+            return renderSingle(self, x, y, font, text, color)
+        end
+    end
+    self:draw(-1000000, -1000000)
+end
+
+function Text:getWidth ()
+    return self.width
+end
+
+function Text:getHeight ()
+    return self.height
+end
+
+return Text