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https://github.com/Rockbox/rockbox.git
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a6570b7d37
rewrite draw_text to use new viewport buffer set_viewport now accepts rliimage to allowe interfacing with rb. functions fix long standing 2-bit bug with text drawing in lua fix 2-bit img saving bug (i'm guessing just a one off, just enabled clipping) fix font_getstringsize bug fix shape of numbers draw_num.lua also add auto centering add page scrolling to printtable add a new demo script 'stars' Change-Id: I866905cee82ee89ebc0eb020a56a7ecdb101bf5e
74 lines
2.4 KiB
Lua
74 lines
2.4 KiB
Lua
--[[ Lua Draw Text function
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2017 William Wilgus
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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]]
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-- draw text onto image if width/height are supplied text is centered
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if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
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do
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-- Internal Constants
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local rocklib_image = getmetatable(rb.lcd_framebuffer())
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local _LCD = rb.lcd_framebuffer()
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local LCD_W, LCD_H = rb.LCD_WIDTH, rb.LCD_HEIGHT
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local BSAND = 8 -- blits color to dst if src <> 0
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local _NIL = nil -- nil placeholder
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local _clear = rocklib_image.clear
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local _copy = rocklib_image.copy
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local _newimg = rb.new_image
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return function(img, x, y, width, height, font, color, text)
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font = font or rb.FONT_UI
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if rb.lcd_rgbpack ~= _NIL then -- Color target
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rb.set_viewport(img, {fg_pattern = color, font = font, drawmode = 2})--DRMODE_FG
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else
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if color ~= 0 then color = 3 end--DRMODE_SOLID
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rb.set_viewport(img, {font = font, drawmode = color})
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end
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if width or height then
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local res, w, h = rb.font_getstringsize(text, font)
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if not width then
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width = 0
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else
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width = (width - w) / 2
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end
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if not height then
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height = 0
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else
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height = (height - h) / 2
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end
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x = width + x
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y = height + y
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end
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rb.lcd_putsxy(x, y, text)
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rb.set_viewport() -- set viewport default
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return res, w, h
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end
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end
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