--[[ Lua Draw Text function /*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2017 William Wilgus * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ ]] -- draw text onto image if width/height are supplied text is centered if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end do -- Internal Constants local rocklib_image = getmetatable(rb.lcd_framebuffer()) local _LCD = rb.lcd_framebuffer() local LCD_W, LCD_H = rb.LCD_WIDTH, rb.LCD_HEIGHT local BSAND = 8 -- blits color to dst if src <> 0 local _NIL = nil -- nil placeholder local _clear = rocklib_image.clear local _copy = rocklib_image.copy local _newimg = rb.new_image return function(img, x, y, width, height, font, color, text) font = font or rb.FONT_UI if rb.lcd_rgbpack ~= _NIL then -- Color target rb.set_viewport(img, {fg_pattern = color, font = font, drawmode = 2})--DRMODE_FG else if color ~= 0 then color = 3 end--DRMODE_SOLID rb.set_viewport(img, {font = font, drawmode = color}) end if width or height then local res, w, h = rb.font_getstringsize(text, font) if not width then width = 0 else width = (width - w) / 2 end if not height then height = 0 else height = (height - h) / 2 end x = width + x y = height + y end rb.lcd_putsxy(x, y, text) rb.set_viewport() -- set viewport default return res, w, h end end