mirror of
https://github.com/kepler155c/opus
synced 2025-01-16 18:32:52 +00:00
474 lines
9.1 KiB
Lua
474 lines
9.1 KiB
Lua
local Canvas = require('opus.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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local mapColorToGray = {
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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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-- 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
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local cx, cy = 1, 1
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local blink = false
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local _bg, _fg = colors.black, colors.white
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win.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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bg = _bg,
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fg = _fg,
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})
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local function update()
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if isVisible then
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win.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(#win.canvas.lines - win.canvas.height, y)
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if y ~= win.canvas.offy then
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win.canvas.offy = y
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win.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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win.canvas:write(cx, cy + win.canvas.offy, str, win.canvas.bg, win.canvas.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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win.canvas:blit(cx, cy + win.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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win.canvas.offy = 0
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for i = #win.canvas.lines, win.canvas.height + 1, -1 do
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win.canvas.lines[i] = nil
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end
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win.canvas:clear()
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update()
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end
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function win.getLine(n)
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local line = win.canvas.lines[n]
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return line.text, line.fg, line.bg
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end
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function win.clearLine()
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win.canvas:clearLine(cy + win.canvas.offy)
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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 = math.floor(x), math.floor(y)
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if isVisible then
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parent.setCursorPos(cx + win.canvas.x - 1, cy + win.canvas.y - 1)
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end
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end
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function win.getCursorBlink()
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return blink
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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 win.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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win.canvas.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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win.canvas.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 win.canvas.width, win.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 = #win.canvas.lines
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for i = 1, n do
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win.canvas.lines[lines + i] = { }
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win.canvas:clearLine(lines + i)
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end
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while #win.canvas.lines > (maxScroll or win.canvas.height) do
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table.remove(win.canvas.lines, 1)
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end
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scrollTo(#win.canvas.lines)
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win.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 win.canvas.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 win.canvas.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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win.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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win.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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if isVisible then
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win.setCursorPos(cx, cy)
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win.setTextColor(win.canvas.fg)
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win.setCursorBlink(blink)
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end
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end
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function win.getPosition()
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return win.canvas.x, win.canvas.y
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end
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function win.reposition(x, y, width, height)
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if not maxScroll then
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win.canvas:move(x, y)
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win.canvas:resize(width or win.canvas.width, height or win.canvas.height)
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return
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end
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-- special processing for scrolling terminal like windows
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local delta = height - win.canvas.height
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if delta > 0 then -- grow
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for _ = 1, delta do
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win.canvas.lines[#win.canvas.lines + 1] = { }
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win.canvas:clearLine(#win.canvas.lines)
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end
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elseif delta < 0 then -- shrink
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for _ = delta + 1, 0 do
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if cy < win.canvas.height then
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win.canvas.lines[#win.canvas.lines] = nil
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else
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cy = cy - 1
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win.canvas.offy = win.canvas.offy + 1
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end
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end
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end
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win.canvas:resizeBuffer(width, #win.canvas.lines)
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win.canvas.height = height
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win.canvas.width = width
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win.canvas:move(x, y)
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update()
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end
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--[[ Additional methods ]]--
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function win.scrollDown()
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scrollTo(win.canvas.offy + 1)
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end
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function win.scrollUp()
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scrollTo(win.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(#win.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 win.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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function win.writeX(sText)
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-- expect(1, sText, "string", "number")
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local nLinesPrinted = 0
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local function newLine()
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if cy + 1 <= win.canvas.height then
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cx, cy = 1, cy + 1
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else
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cx, cy = 1, win.canvas.height
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win.scroll(1)
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end
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nLinesPrinted = nLinesPrinted + 1
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end
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-- Print the line with proper word wrapping
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sText = tostring(sText)
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while #sText > 0 do
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local whitespace = string.match(sText, "^[ \t]+")
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if whitespace then
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-- Print whitespace
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win.write(whitespace)
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sText = string.sub(sText, #whitespace + 1)
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end
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local newline = string.match(sText, "^\n")
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if newline then
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-- Print newlines
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newLine()
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sText = string.sub(sText, 2)
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end
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local text = string.match(sText, "^[^ \t\n]+")
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if text then
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sText = string.sub(sText, #text + 1)
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if #text > win.canvas.width then
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-- Print a multiline word
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while #text > 0 do
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if cx > win.canvas.width then
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newLine()
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end
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win.write(text)
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text = string.sub(text, win.canvas.width - cx + 2)
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end
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else
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-- Print a word normally
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if cx + #text - 1 > win.canvas.width then
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newLine()
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end
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win.write(text)
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end
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end
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end
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return nLinesPrinted
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end
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function win.print(...)
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local vis = isVisible
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isVisible = false
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local nLinesPrinted = 0
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local nLimit = select("#", ...)
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for n = 1, nLimit do
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local s = tostring(select(n, ...))
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if n < nLimit then
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s = s .. "\t"
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end
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nLinesPrinted = nLinesPrinted + win.writeX(s)
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end
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nLinesPrinted = nLinesPrinted + win.writeX("\n")
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isVisible = vis
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update()
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return nLinesPrinted
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end
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win.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)
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if not win.getLine then
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error('window is required')
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end
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local lines = { }
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local _, h = win.getSize()
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for i = 1, h do
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local text, fg, bg = win.getLine(i)
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lines[i] = {
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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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return lines
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end
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function Terminal.colorToGrayscale(c)
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return mapColorToGray[c]
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end
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function Terminal.toGrayscale(ct)
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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(mapColorToGray[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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