9967adf242
- Add screen.default_x and screen.default_y to determine where screen.defcursor resets the cursor to. - Use screen.setcursor in screen.defcursor instead of rewriting the escape sequence. - Use screen.default_y when resetting the cursor after writing the new twiddle character, add a comment verbally describing the position just in case.
81 lines
2.3 KiB
Lua
81 lines
2.3 KiB
Lua
--
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-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- $FreeBSD$
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--
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local color = require("color")
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local core = require("core")
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local screen = {}
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-- Module exports
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screen.default_x = 0
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screen.default_y = 25
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function screen.clear()
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if core.isSerialBoot() then
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return
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end
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loader.printc(core.KEYSTR_CSI .. "H" .. core.KEYSTR_CSI .. "J")
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end
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function screen.setcursor(x, y)
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if core.isSerialBoot() then
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return
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end
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loader.printc(core.KEYSTR_CSI .. y .. ";" .. x .. "H")
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end
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function screen.setforeground(color_value)
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if color.disabled then
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return color_value
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end
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loader.printc(color.escapef(color_value))
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end
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function screen.setbackground(color_value)
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if color.disabled then
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return color_value
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end
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loader.printc(color.escapeb(color_value))
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end
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function screen.defcolor()
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loader.printc(color.default())
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end
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function screen.defcursor()
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if core.isSerialBoot() then
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return
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end
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screen.setcursor(screen.default_x, screen.default_y)
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end
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return screen
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