mirror of
https://github.com/kepler155c/opus
synced 2024-11-15 21:24:49 +00:00
356 lines
6.4 KiB
Lua
356 lines
6.4 KiB
Lua
local Canvas = require('ui.canvas')
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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 Terminal = { }
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-- Replacement for window api with scrolling and buffering
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function Terminal.window(parent, sx, sy, w, h, isVisible)
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isVisible = isVisible ~= false
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if not w or not h then
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w, h = parent.getSize()
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end
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local win = { }
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local maxScroll = 100
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local cx, cy = 1, 1
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local blink = false
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local bg, fg = parent.getBackgroundColor(), parent.getTextColor()
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local canvas = Canvas({
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x = sx,
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y = sy,
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width = w,
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height = h,
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isColor = parent.isColor(),
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offy = 0,
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})
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win.canvas = canvas
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local function update()
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if isVisible then
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canvas:render(parent)
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win.setCursorPos(cx, cy)
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end
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end
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local function scrollTo(y)
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y = math.max(0, y)
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y = math.min(#canvas.lines - canvas.height, y)
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if y ~= canvas.offy then
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canvas.offy = y
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canvas:dirty()
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update()
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end
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end
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function win.write(str)
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str = tostring(str) or ''
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canvas:write(cx, cy + canvas.offy, str, bg, fg)
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win.setCursorPos(cx + #str, cy)
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update()
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end
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function win.blit(str, fg, bg)
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canvas:blit(cx, cy + canvas.offy, str, bg, fg)
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win.setCursorPos(cx + #str, cy)
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update()
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end
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function win.clear()
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canvas.offy = 0
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for i = #canvas.lines, canvas.height + 1, -1 do
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canvas.lines[i] = nil
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end
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canvas:clear(bg, fg)
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update()
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end
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function win.clearLine()
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canvas:clearLine(cy + canvas.offy, bg, fg)
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win.setCursorPos(cx, cy)
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update()
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end
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function win.getCursorPos()
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return cx, cy
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end
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function win.setCursorPos(x, y)
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cx, cy = x, y
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if isVisible then
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parent.setCursorPos(x + canvas.x - 1, y + canvas.y - 1)
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end
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end
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function win.setCursorBlink(b)
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blink = b
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if isVisible then
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parent.setCursorBlink(b)
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end
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end
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function win.isColor()
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return canvas.isColor
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end
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win.isColour = win.isColor
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function win.setTextColor(c)
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fg = c
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end
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win.setTextColour = win.setTextColor
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function win.getPaletteColor(n)
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if parent.getPaletteColor then
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return parent.getPaletteColor(n)
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end
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return 0, 0, 0
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end
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win.getPaletteColour = win.getPaletteColor
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function win.setPaletteColor(n, r, g, b)
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if parent.setPaletteColor then
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return parent.setPaletteColor(n, r, g, b)
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end
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end
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win.setPaletteColour = win.setPaletteColor
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function win.setBackgroundColor(c)
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bg = c
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end
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win.setBackgroundColour = win.setBackgroundColor
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function win.getSize()
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return canvas.width, canvas.height
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end
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function win.scroll(n)
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n = n or 1
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if n > 0 then
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local lines = #canvas.lines
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for i = 1, n do
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canvas.lines[lines + i] = { }
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canvas:clearLine(lines + i, bg, fg)
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end
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while #canvas.lines > maxScroll do
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table.remove(canvas.lines, 1)
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end
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scrollTo(#canvas.lines)
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canvas:dirty()
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update()
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end
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end
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function win.getTextColor()
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return fg
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end
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win.getTextColour = win.getTextColor
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function win.getBackgroundColor()
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return bg
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end
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win.getBackgroundColour = win.getBackgroundColor
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function win.setVisible(visible)
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if visible ~= isVisible then
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isVisible = visible
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if isVisible then
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canvas:dirty()
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update()
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end
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end
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end
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function win.redraw()
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if isVisible then
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canvas:dirty()
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update()
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end
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end
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function win.restoreCursor()
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win.setCursorPos(cx, cy)
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win.setCursorBlink(blink)
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end
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function win.getPosition()
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return canvas.x, canvas.y
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end
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function win.reposition(x, y, width, height)
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canvas.x, canvas.y = x, y
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canvas:resize(width or canvas.width, height or canvas.height)
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end
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--[[ Additional methods ]]--
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function win.scrollDown()
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scrollTo(canvas.offy + 1)
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end
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function win.scrollUp()
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scrollTo(canvas.offy - 1)
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end
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function win.scrollTop()
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scrollTo(0)
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end
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function win.scrollBottom()
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scrollTo(#canvas.lines)
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end
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function win.setMaxScroll(ms)
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maxScroll = ms
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end
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function win.getCanvas()
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return canvas
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end
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function win.getParent()
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return parent
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end
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canvas:clear()
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return win
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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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local t = { }
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for k,f in pairs(ct) do
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t[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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return t
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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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