mirror of
https://github.com/kepler155c/opus
synced 2024-12-29 01:50:27 +00:00
336 lines
6.6 KiB
Lua
336 lines
6.6 KiB
Lua
local colors = _G.colors
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local term = _G.term
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local _gsub = string.gsub
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local _rep = string.rep
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local _sub = string.sub
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local Terminal = { }
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-- add scrolling functions to a window
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function Terminal.scrollable(win, maxScroll)
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local lines = { }
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local scrollPos = 0
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local oblit, oreposition = win.blit, win.reposition
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local palette = { }
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for n = 1, 16 do
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palette[2 ^ (n - 1)] = _sub("0123456789abcdef", n, n)
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end
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maxScroll = maxScroll or 100
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-- should only do if window is visible...
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local function redraw()
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local _, h = win.getSize()
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local x, y = win.getCursorPos()
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for i = 1, h do
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local line = lines[i + scrollPos]
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if line and line.dirty then
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win.setCursorPos(1, i)
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oblit(line.text, line.fg, line.bg)
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line.dirty = false
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end
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end
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win.setCursorPos(x, y)
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end
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local function scrollTo(p, forceRedraw)
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local _, h = win.getSize()
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local ms = #lines - h -- max scroll
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p = math.min(math.max(p, 0), ms) -- normalize
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if p ~= scrollPos or forceRedraw then
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scrollPos = p
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for _, line in pairs(lines) do
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line.dirty = true
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end
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end
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end
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function win.write(text)
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local _, h = win.getSize()
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text = tostring(text) or ''
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scrollTo(#lines - h)
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win.blit(text,
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_rep(palette[win.getTextColor()], #text),
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_rep(palette[win.getBackgroundColor()], #text))
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local x, y = win.getCursorPos()
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win.setCursorPos(x + #text, y)
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end
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function win.clearLine()
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local w, h = win.getSize()
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local _, y = win.getCursorPos()
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scrollTo(#lines - h)
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lines[y + scrollPos] = {
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text = _rep(' ', w),
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fg = _rep(palette[win.getTextColor()], w),
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bg = _rep(palette[win.getBackgroundColor()], w),
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dirty = true,
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}
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redraw()
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end
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function win.blit(text, fg, bg)
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local x, y = win.getCursorPos()
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local w, h = win.getSize()
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if y > 0 and y <= h and x <= w then
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local width = #text
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-- fix ffs
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if x < 1 then
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text = _sub(text, 2 - x)
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if bg then
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bg = _sub(bg, 2 - x)
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end
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if bg then
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fg = _sub(fg, 2 - x)
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end
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width = width + x - 1
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x = 1
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end
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if x + width - 1 > w then
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text = _sub(text, 1, w - x + 1)
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if bg then
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bg = _sub(bg, 1, w - x + 1)
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end
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if bg then
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fg = _sub(fg, 1, w - x + 1)
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end
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width = #text
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end
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if width > 0 then
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local function replace(sstr, pos, rstr)
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if pos == 1 and width == w then
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return rstr
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elseif pos == 1 then
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return rstr .. _sub(sstr, pos+width)
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elseif pos + width > w then
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return _sub(sstr, 1, pos-1) .. rstr
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end
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return _sub(sstr, 1, pos-1) .. rstr .. _sub(sstr, pos+width)
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end
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local line = lines[y + scrollPos]
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line.dirty = true
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line.text = replace(line.text, x, text, width)
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if fg then
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line.fg = replace(line.fg, x, fg, width)
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end
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if bg then
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line.bg = replace(line.bg, x, bg, width)
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end
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end
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end
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redraw()
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end
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function win.clear()
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local w, h = win.getSize()
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local text = _rep(' ', w)
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local fg = _rep(palette[win.getTextColor()], w)
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local bg = _rep(palette[win.getBackgroundColor()], w)
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lines = { }
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for y = 1, h do
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lines[y] = {
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dirty = true,
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text = text,
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fg = fg,
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bg = bg,
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}
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end
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scrollPos = 0
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redraw()
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end
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-- doesn't support negative scrolling...
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function win.scroll(n)
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local w = win.getSize()
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for _ = 1, n do
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lines[#lines + 1] = {
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text = _rep(' ', w),
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fg = _rep(palette[win.getTextColor()], w),
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bg = _rep(palette[win.getBackgroundColor()], w),
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}
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end
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while #lines > maxScroll do
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table.remove(lines, 1)
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end
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scrollTo(maxScroll, true)
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redraw()
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end
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function win.scrollUp()
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scrollTo(scrollPos - 1)
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redraw()
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end
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function win.scrollDown()
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scrollTo(scrollPos + 1)
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redraw()
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end
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function win.reposition(x, y, nw, nh)
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local w, h = win.getSize()
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local D = (nh or h) - h
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if D > 0 then
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for _ = 1, D do
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lines[#lines + 1] = {
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text = _rep(' ', w),
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fg = _rep(palette[win.getTextColor()], w),
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bg = _rep(palette[win.getBackgroundColor()], w),
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}
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end
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elseif D < 0 then
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for _ = D, -1 do
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lines[#lines] = nil
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end
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end
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return oreposition(x, y, nw, nh)
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end
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win.clear()
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end
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-- get windows contents
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function Terminal.getContents(win, parent)
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local oblit, oscp = parent.blit, parent.setCursorPos
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local lines = { }
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parent.blit = function(text, fg, bg)
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lines[#lines + 1] = {
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text = text,
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fg = fg,
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bg = bg,
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}
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end
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parent.setCursorPos = function() end
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win.setVisible(true)
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win.redraw()
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parent.blit = oblit
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parent.setCursorPos = oscp
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return lines
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end
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function Terminal.toGrayscale(ct)
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local scolors = {
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[ colors.white ] = colors.white,
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[ colors.orange ] = colors.lightGray,
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[ colors.magenta ] = colors.lightGray,
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[ colors.lightBlue ] = colors.lightGray,
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[ colors.yellow ] = colors.lightGray,
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[ colors.lime ] = colors.lightGray,
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[ colors.pink ] = colors.lightGray,
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[ colors.gray ] = colors.gray,
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[ colors.lightGray ] = colors.lightGray,
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[ colors.cyan ] = colors.lightGray,
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[ colors.purple ] = colors.gray,
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[ colors.blue ] = colors.gray,
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[ colors.brown ] = colors.gray,
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[ colors.green ] = colors.lightGray,
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[ colors.red ] = colors.gray,
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[ colors.black ] = colors.black,
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}
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local methods = { 'setBackgroundColor', 'setBackgroundColour',
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'setTextColor', 'setTextColour' }
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for _,v in pairs(methods) do
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local fn = ct[v]
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ct[v] = function(c)
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fn(scolors[c])
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end
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end
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local bcolors = {
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[ '1' ] = '8',
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[ '2' ] = '8',
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[ '3' ] = '8',
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[ '4' ] = '8',
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[ '5' ] = '8',
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[ '6' ] = '8',
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[ '9' ] = '8',
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[ 'a' ] = '7',
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[ 'b' ] = '7',
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[ 'c' ] = '7',
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[ 'd' ] = '8',
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[ 'e' ] = '7',
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}
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local function translate(s)
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if s then
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s = _gsub(s, "%w", bcolors)
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end
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return s
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end
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local fn = ct.blit
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ct.blit = function(text, fg, bg)
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fn(text, translate(fg), translate(bg))
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end
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end
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function Terminal.getNullTerm(ct)
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local nt = Terminal.copy(ct)
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local methods = { 'blit', 'clear', 'clearLine', 'scroll',
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'setCursorBlink', 'setCursorPos', 'write' }
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for _,v in pairs(methods) do
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nt[v] = function() end
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end
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return nt
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end
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function Terminal.copy(it, ot)
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ot = ot or { }
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for k,v in pairs(it) do
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if type(v) == 'function' then
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ot[k] = v
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end
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end
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return ot
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end
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function Terminal.mirror(ct, dt)
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for k,f in pairs(ct) do
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ct[k] = function(...)
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local ret = { f(...) }
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if dt[k] then
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dt[k](...)
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end
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return table.unpack(ret)
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end
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end
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end
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function Terminal.readPassword(prompt)
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if prompt then
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term.write(prompt)
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end
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local fn = term.current().write
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term.current().write = function() end
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local s
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pcall(function() s = _G.read(prompt) end)
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term.current().write = fn
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if s == '' then
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return
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end
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return s
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end
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return Terminal
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