LuPPC/src/lua/core/textgpu.lua

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local textgpu = {}
local mapping = {
["0"] = 0x000000,
["1"] = 0xFF0000,
["2"] = 0x00FF00,
["3"] = 0xFFFF00,
["4"] = 0x0000FF,
["5"] = 0xFF00FF,
["6"] = 0x00FFFF,
["7"] = 0xFFFFFF,
}
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--[[local nw = io.write
io.write = function(...)
nw(...)
io.flush()
native.sleep(20000)
end]]--
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local background = "0"
local foreground = "0"
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local tbuffer = {}
local bbuffer = {}
local fbuffer = {}
local function prepareBuffers(w, h)
local tbline = (" "):rep(w)
local bbline = ("0"):rep(w)
local fbline = ("7"):rep(w)
for i=1, h do
tbuffer[i] = tbline
bbuffer[i] = bbline
fbuffer[i] = fbline
end
end
local usub = modules.utf8.sub
local function insertString(main, sub, at)
return usub(main, 1, at - 1) .. sub .. usub(main, at + utf8.len(sub))
end
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function textgpu.start()
local gpu = {}
function gpu.bind() return false, "This is static bound gpu" end
function gpu.getScreen() return "n/a" end
function gpu.setBackground(color, isPaletteIndex)
checkArg(1, color, "number")
checkArg(2, isPaletteIndex, "boolean", "nil")
if isPaletteIndex then
return --TODO: Maybe?
end
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local old = background
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background = tostring(math.floor(modules.color.nearest(color, mapping)))
io.write("\x1b[4" .. background .. "m")
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io.flush()
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return mapping[old]
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end
function gpu.setForeground(color, isPaletteIndex)
checkArg(1, color, "number")
checkArg(2, isPaletteIndex, "boolean", "nil")
if isPaletteIndex then
return --TODO: Maybe?
end
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local old = foreground
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foreground = tostring(math.floor(modules.color.nearest(color, mapping)))
io.write("\x1b[3" .. foreground .. "m")
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io.flush()
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return mapping[old]
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end
function gpu.getBackground()
return mapping[background], false
end
function gpu.getForeground()
return mapping[foreground], false
end
function gpu.getPaletteColor()
return nil
end
function gpu.setPaletteColor()
return nil
end
function gpu.maxDepth()
return 3
end
function gpu.setDepth()
return false
end
function gpu.getDepth()
return 3
end
function gpu.maxResolution()
return termutils.getSize()
end
function gpu.getResolution()
return termutils.getSize()
end
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function gpu.getViewport()
return termutils.getSize()
end
function gpu.setViewport(w, h)
checkArg(1, w, "number")
checkArg(2, h, "number")
return false, "Viewport not supported for this gpu"
end
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function gpu.setResolution(w, h)
checkArg(1, w, "number")
checkArg(2, h, "number")
return false, "Non resizeable gpu"
end
function gpu.get(x, y)
checkArg(1, x, "number")
checkArg(2, y, "number")
--FIXME: ASAP: Implement
return " "
end
function gpu.set(x, y, value, vertical)
checkArg(1, x, "number")
checkArg(2, y, "number")
checkArg(3, value, "string")
checkArg(4, vertical, "boolean", "nil")
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x = math.floor(x)
y = math.floor(y)
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if not vertical then
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tbuffer[y] = insertString(tbuffer[y], value, x)
bbuffer[y] = insertString(bbuffer[y], background:rep(utf8.len(value)), x)
fbuffer[y] = insertString(fbuffer[y], foreground:rep(utf8.len(value)), x)
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io.write("\x1b[" .. y .. ";" .. x .. "H" .. value)
else
io.write("\x1b[" .. y .. ";" .. x .. "H")
value:gsub(".", function(c)
io.write(c .. "\x1b[D\x1b[B")
end)
end
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io.flush()
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return true
end
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function gpu.copy(x, y, w, h, tx, ty) --TODO: Check(check X multiple times)
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checkArg(1, x, "number")
checkArg(2, y, "number")
checkArg(3, w, "number")
checkArg(4, h, "number")
checkArg(5, tx, "number")
checkArg(6, ty, "number")
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local ttbuf = {}
local btbuf = {}
local ftbuf = {}
for i=1, h do
ttbuf[i] = tbuffer[y + i - 1] and tbuffer[y + i - 1]:sub(x, x + w - 1) or (" "):rep(w)
btbuf[i] = bbuffer[y + i - 1] and bbuffer[y + i - 1]:sub(x, x + w - 1) or background:rep(w)
ftbuf[i] = fbuffer[y + i - 1] and fbuffer[y + i - 1]:sub(x, x + w - 1) or foreground:rep(w)
end
local bg = background
local fg = foreground
for i=1, h do
local line, linex
local write = false
for j=1, w do
if btbuf[i]:sub(j,j) ~= bg then
write = true
end
if ftbuf[i]:sub(j,j) ~= fg then
write = true
end
if not line then linex = j end
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line = (line or "")
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if write then
local wx = (tx + linex)|0
local wy = (ty + y + i - 1)|0
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io.write("\x1b[4" .. bg .. "m")
io.write("\x1b[3" .. fg .. "m")
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io.write("\x1b[" .. wy .. ";" .. wx .. "H" .. line)
tbuffer[wy] = insertString(tbuffer[wy], line, wx)
bbuffer[wy] = insertString(bbuffer[wy], bg:rep(utf8.len(line)), wx)
fbuffer[wy] = insertString(fbuffer[wy], fg:rep(utf8.len(line)), wx)
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bg = btbuf[i]:sub(j,j)
fg = ftbuf[i]:sub(j,j)
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line = nil
linex = nil
write = false
end
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if not line then linex = j end
line = (line or "") .. ttbuf[i]:sub(j,j)
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end
if line then
local wx = (tx + linex)|0
local wy = (ty + y + i - 1)|0
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io.write("\x1b[4" .. bg .. "m")
io.write("\x1b[3" .. fg .. "m")
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io.write("\x1b[" .. wy .. ";" .. wx .. "H" .. line)
tbuffer[wy] = insertString(tbuffer[wy], line, wx)
bbuffer[wy] = insertString(bbuffer[wy], bg:rep(utf8.len(line)), wx)
fbuffer[wy] = insertString(fbuffer[wy], fg:rep(utf8.len(line)), wx)
line = nil
linex = nil
write = false
end
end
io.write("\x1b[4" .. background .. "m")
io.write("\x1b[3" .. foreground .. "m")
io.flush()
return true
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end
function gpu.fill(x, y, w, h, ch)
checkArg(1, x, "number")
checkArg(2, y, "number")
checkArg(3, w, "number")
checkArg(4, h, "number")
checkArg(5, ch, "string")
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ch = ch:sub(1, 1):rep(math.floor(w))
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for i=1, h do
gpu.set(x, y + i - 1, ch)
end
return true
end
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io.write("\x1b[?25l") --Disable cursor
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local w, h = gpu.getResolution()
prepareBuffers(w, h)
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gpu.setForeground(0xFFFFFF)
gpu.setBackground(0x000000)
modules.component.api.register(nil, "gpu", gpu)
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modules.component.api.register(nil, "screen", {getKeyboards = function() return {"TODO:SetThisUuid"} end}) --verry dummy screen, TODO: make it better, kbd uuid also in epoll.c
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modules.component.api.register("TODO:SetThisUuid", "keyboard", {})
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deadhooks[#deadhooks + 1] = function()
io.write("\x1b[?25h") --Enable cursor on quit
end
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end
return textgpu