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factor out htmlterm.coffee
[watch-my-terminal.git] / htmlterm.coffee
diff --git a/htmlterm.coffee b/htmlterm.coffee
new file mode 100644 (file)
index 0000000..829f757
--- /dev/null
@@ -0,0 +1,140 @@
+class HTMLTerminal
+       timeout: (ms, f) -> setTimeout(f, ms)
+       constructor: (jq_element, width, height) ->
+               @parent_element = jq_element
+               @redraw_wait = false
+               @redraw_again = false
+               @term = window.terminal.new width, height
+               @palette = [
+                       # normal colours
+                       '2e3436',
+                       'cc0000',
+                       '4e9a06',
+                       'c4a000',
+                       '3465a4',
+                       '75507b',
+                       '06989a',
+                       'd3d7cf',
+
+                       # brighter versions (for bold, and 16-color sequences)
+                       '555753',
+                       'ef2929',
+                       '8ae234',
+                       'fce94f',
+                       '729fcf',
+                       'ad7fa8',
+                       '34e2e2',
+                       'eeeeec',
+
+                       # 256 colors
+                       '000000', '00005f', '000087', '0000af', '0000d7', '0000ff', '005f00', '005f5f',
+                       '005f87', '005faf', '005fd7', '005fff', '008700', '00875f', '008787', '0087af',
+                       '0087d7', '0087ff', '00af00', '00af5f', '00af87', '00afaf', '00afd7', '00afff',
+                       '00d700', '00d75f', '00d787', '00d7af', '00d7d7', '00d7ff', '00ff00', '00ff5f',
+                       '00ff87', '00ffaf', '00ffd7', '00ffff', '5f0000', '5f005f', '5f0087', '5f00af',
+                       '5f00d7', '5f00ff', '5f5f00', '5f5f5f', '5f5f87', '5f5faf', '5f5fd7', '5f5fff',
+                       '5f8700', '5f875f', '5f8787', '5f87af', '5f87d7', '5f87ff', '5faf00', '5faf5f',
+                       '5faf87', '5fafaf', '5fafd7', '5fafff', '5fd700', '5fd75f', '5fd787', '5fd7af',
+                       '5fd7d7', '5fd7ff', '5fff00', '5fff5f', '5fff87', '5fffaf', '5fffd7', '5fffff',
+                       '870000', '87005f', '870087', '8700af', '8700d7', '8700ff', '875f00', '875f5f',
+                       '875f87', '875faf', '875fd7', '875fff', '878700', '87875f', '878787', '8787af',
+                       '8787d7', '8787ff', '87af00', '87af5f', '87af87', '87afaf', '87afd7', '87afff',
+                       '87d700', '87d75f', '87d787', '87d7af', '87d7d7', '87d7ff', '87ff00', '87ff5f',
+                       '87ff87', '87ffaf', '87ffd7', '87ffff', 'af0000', 'af005f', 'af0087', 'af00af',
+                       'af00d7', 'af00ff', 'af5f00', 'af5f5f', 'af5f87', 'af5faf', 'af5fd7', 'af5fff',
+                       'af8700', 'af875f', 'af8787', 'af87af', 'af87d7', 'af87ff', 'afaf00', 'afaf5f',
+                       'afaf87', 'afafaf', 'afafd7', 'afafff', 'afd700', 'afd75f', 'afd787', 'afd7af',
+                       'afd7d7', 'afd7ff', 'afff00', 'afff5f', 'afff87', 'afffaf', 'afffd7', 'afffff',
+                       'd70000', 'd7005f', 'd70087', 'd700af', 'd700d7', 'd700ff', 'd75f00', 'd75f5f',
+                       'd75f87', 'd75faf', 'd75fd7', 'd75fff', 'd78700', 'd7875f', 'd78787', 'd787af',
+                       'd787d7', 'd787ff', 'd7af00', 'd7af5f', 'd7af87', 'd7afaf', 'd7afd7', 'd7afff',
+                       'd7d700', 'd7d75f', 'd7d787', 'd7d7af', 'd7d7d7', 'd7d7ff', 'd7ff00', 'd7ff5f',
+                       'd7ff87', 'd7ffaf', 'd7ffd7', 'd7ffff', 'ff0000', 'ff005f', 'ff0087', 'ff00af',
+                       'ff00d7', 'ff00ff', 'ff5f00', 'ff5f5f', 'ff5f87', 'ff5faf', 'ff5fd7', 'ff5fff',
+                       'ff8700', 'ff875f', 'ff8787', 'ff87af', 'ff87d7', 'ff87ff', 'ffaf00', 'ffaf5f',
+                       'ffaf87', 'ffafaf', 'ffafd7', 'ffafff', 'ffd700', 'ffd75f', 'ffd787', 'ffd7af',
+                       'ffd7d7', 'ffd7ff', 'ffff00', 'ffff5f', 'ffff87', 'ffffaf', 'ffffd7', 'ffffff',
+                       '080808', '121212', '1c1c1c', '262626', '303030', '3a3a3a', '444444', '4e4e4e',
+                       '585858', '626262', '6c6c6c', '767676', '808080', '8a8a8a', '949494', '9e9e9e',
+                       'a8a8a8', 'b2b2b2', 'bcbcbc', 'c6c6c6', 'd0d0d0', 'dadada', 'e4e4e4', 'eeeeee'
+               ]
+
+               @parent_element.css backgroundColor: "##{@palette[0]}", color: "##{@palette[7]}"
+
+       color_to_css: (i) ->
+               # handle inverse bit
+               if i & 0x080000
+                       index = ((i >> 8) & 0xff)
+               else
+                       index = (i & 0xff)
+
+               # lighten the basic 8 colors when they're bold
+               if ((i & 0x10000) and index < 8)
+                       index += 8
+               return 'color: #' + @palette[index] + '; '
+
+       bg_color_to_css: (i) ->
+               # xor the inverse bit, to get color_to_css to use the bg color
+               return 'background-' + @color_to_css(i ^ 0x080000)
+
+       stylize: (txt, style) ->
+               return '' if txt.length is 0
+               return $('<span>').text txt if style is 0x000007
+               css = ''
+               css += 'font-weight: bold; ' if style & 0x010000
+               css += 'text-decoration: underline; ' if style & 0x020000
+               css += 'font-style: italic; ' if style & 0x200000 # italic
+               css += 'opacity: 0; ' if style & 0x100000 # invisible
+               css += @color_to_css(style) if ((style & 0x0800ff) isnt 0x07)
+               css += @bg_color_to_css(style) if (style & 0x08ff00)
+               return $('<span style="'+css+'"></span>').text(txt)
+
+       redraw_now: ->
+               console.log('redraw_now')
+               @parent_element.empty()
+               # cursor can be just off the right side, but we draw it on the last column in that case
+               if @term.x >= @term.width
+                       cursor_x = @term.width - 1
+               else
+                       cursor_x = @term.x
+               # invert the cursor TODO: make it blink
+               if @term.cursor_visible
+                       @term.attributes[@term.y][cursor_x] ^= 0x080000
+               for i in [0...@term.text.length]
+                       div = $('<code>')
+                       txt = ''
+                       a = 0x000007
+                       for j in [0...@term.text[i].length]
+                               if (@term.attributes[i][j] isnt a)
+                                       if (txt.length)
+                                               div.append(@stylize(txt, a))
+                                               txt = ''
+                                       a = @term.attributes[i][j]
+                               txt += @term.text[i][j]
+                       if txt.length
+                               div.append(@stylize(txt, a))
+                       @parent_element.append(div)
+               if @term.cursor_visible
+                       @term.attributes[@term.y][cursor_x] ^= 0x080000
+
+       # limit to 50fps
+       redraw: ->
+               console.log('redraw')
+               if (@redraw_wait)
+                       @redraw_again = true
+               else
+                       @redraw_now()
+                       @redraw_wait = true
+                       @redraw_again = false
+                       @timeout 20, =>
+                               @redraw_wait = false
+                               if (@redraw_again)
+                                       @redraw_again = false
+                                       @redraw()
+
+       update: (data) ->
+               @term.update(data)
+               @redraw()
+
+window.htmlterm = (jq_element, width, height) ->
+       return new HTMLTerminal(jq_element, width, height)