--[[ Copyright (c) 2012 Matthias Richter Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. Except as contained in this notice, the name(s) of the above copyright holders shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ]]-- local BASE = (...):match("(.-)[^%.]+$") local group = require(BASE .. 'group') local mouse = require(BASE .. 'mouse') local keyboard = require(BASE .. 'keyboard') -- -- Helper functions -- -- evaluates all arguments local function strictAnd(...) local n = select("#", ...) local ret = true for i = 1,n do ret = select(i, ...) and ret end return ret end local function strictOr(...) local n = select("#", ...) local ret = false for i = 1,n do ret = select(i, ...) or ret end return ret end -- -- Widget ID -- local maxid, uids = 0, {} setmetatable(uids, {__index = function(t, i) t[i] = {} return t[i] end}) local function generateID() maxid = maxid + 1 return uids[maxid] end -- -- Drawing / Frame update -- local draw_items = {n = 0} local function registerDraw(id, f, ...) assert(type(f) == 'function' or (getmetatable(f) or {}).__call, 'Drawing function is not a callable type!') local font = love.graphics.getFont() local state = 'normal' if mouse.isHot(id) or keyboard.hasFocus(id) then state = mouse.isActive(id) and 'active' or 'hot' end local rest = {n = select('#', ...), ...} draw_items.n = draw_items.n + 1 draw_items[draw_items.n] = function() if font then love.graphics.setFont(font) end f(state, unpack(rest, 1, rest.n)) end end -- actually update-and-draw local function draw() keyboard.endFrame() mouse.endFrame() group.endFrame() -- save graphics state local c = {love.graphics.getColor()} local f = love.graphics.getFont() local lw = love.graphics.getLineWidth() local ls = love.graphics.getLineStyle() for i = 1,draw_items.n do draw_items[i]() end -- restore graphics state love.graphics.setLineWidth(lw) love.graphics.setLineStyle(ls) if f then love.graphics.setFont(f) end love.graphics.setColor(c) draw_items.n = 0 maxid = 0 group.beginFrame() mouse.beginFrame() keyboard.beginFrame() end -- -- The Module -- return { generateID = generateID, style = require((...):match("(.-)[^%.]+$") .. 'style-default'), registerDraw = registerDraw, draw = draw, strictAnd = strictAnd, strictOr = strictOr, }