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140 lines
3.1 KiB
CoffeeScript
140 lines
3.1 KiB
CoffeeScript
class AsciiIo.TerminalView extends Backbone.View
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tagName: 'pre'
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className: 'terminal'
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initialize: (options) ->
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@cols = options.cols
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@lines = options.lines
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@cachedSpans = {}
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@createChildElements()
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@showCursor true
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@startCursorBlink()
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# this.updateScreen();
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# this.render();
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#
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# this.renderLine(0); // we only need 1 line
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# this.element.css({ width: this.element.width(), height: this.element.height() });
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createChildElements: ->
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i = 0
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while i < @lines
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row = $("<span class=\"line\">")
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@$el.append row
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@$el.append "\n"
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i++
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clearScreen: ->
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# this.lineData.length = 0;
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# @cursorY = @cursorX = 0
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@$el.find(".line").empty()
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render: (changes, cursorX, cursorY) ->
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@$el.find('.cursor').removeClass('cursor')
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for n, data of changes
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c = if parseInt(n) is cursorY then cursorX else undefined
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@renderLine n, data || [], c
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afterInsertedToDom: ->
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width = @$el.width()
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height = @$el.height()
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@$el.css(width: width + 'px', height: height + 'px')
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renderLine: (n, data, cursorX) ->
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html = ''
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prevBrush = undefined
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for i in [0...@cols]
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d = data[i]
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if d
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[char, brush] = d
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char = char.replace('&', '&').replace('<', '<')
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if brush != prevBrush or i is cursorX or i is (cursorX + 1)
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if prevBrush
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html += '</span>'
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html += @spanFromBrush(brush, i is cursorX)
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prevBrush = brush
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html += char
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else
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html += ' '
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html += '</span>' if prevBrush
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@$el.find(".line:eq(" + n + ")").html html
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spanFromBrush: (brush, hasCursor) ->
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key = "#{AsciiIo.Brush.hash(brush)}_#{hasCursor}"
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span = @cachedSpans[key]
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if not span
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span = ""
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if hasCursor or brush.fg isnt undefined or brush.bg isnt undefined or brush.bright or brush.underline
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span = "<span class=\""
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if brush.fg isnt undefined
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fg = brush.fg
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fg += 8 if fg < 8 and brush.bright
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span += " fg" + fg
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if brush.bg isnt undefined
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bg = brush.bg
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bg += 8 if bg < 8 and brush.blink
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span += " bg" + bg
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if brush.bright
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span += " bright"
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if brush.underline
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span += " underline"
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if brush.italic
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span += " italic"
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span += " cursor visible" if hasCursor
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span += "\">"
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@cachedSpans[key] = span
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span
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showCursor: (show) ->
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if show
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@$el.addClass "cursor-on"
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else
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@$el.removeClass "cursor-on"
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blinkCursor: ->
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cursor = @$el.find(".cursor")
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if cursor.hasClass("visible")
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cursor.removeClass "visible"
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else
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cursor.addClass "visible"
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resetCursorState: ->
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cursor = @$el.find(".cursor")
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cursor.addClass "visible"
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startCursorBlink: ->
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@cursorTimerId = setInterval(@blinkCursor.bind(this), 500)
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stopCursorBlink: ->
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if @cursorTimerId
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clearInterval @cursorTimerId
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@cursorTimerId = null
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restartCursorBlink: ->
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@stopCursorBlink()
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@resetCursorState()
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@startCursorBlink()
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visualBell: ->
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