You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
2.5 KiB
CoffeeScript
105 lines
2.5 KiB
CoffeeScript
class AsciiIo.Renderer.Canvas extends AsciiIo.Renderer.Base
|
|
tagName: 'canvas'
|
|
className: 'terminal'
|
|
|
|
events:
|
|
'click': 'onClick'
|
|
|
|
initialize: (options) ->
|
|
super(options)
|
|
@ctx = @el.getContext('2d')
|
|
@cursorOn = true
|
|
@cursorVisible = true
|
|
|
|
fixTerminalElementSize: ->
|
|
@$el.attr('width', @width())
|
|
@$el.attr('height', @height())
|
|
|
|
@setFont()
|
|
|
|
setFont: ->
|
|
size = @$el.css('font-size')
|
|
family = @$el.css('font-family')
|
|
@font = "#{size} #{family}"
|
|
@ctx.font = @font
|
|
@prevFont = @font
|
|
@ctx.textBaseline = 'bottom'
|
|
|
|
renderLine: (n, fragments, cursorX) ->
|
|
left = 0
|
|
width = @cols * @cellWidth
|
|
top = n * @cellHeight
|
|
cursorText = undefined
|
|
rendered = 0
|
|
|
|
for fragment in fragments
|
|
[text, brush] = fragment
|
|
|
|
brush = AsciiIo.Brush.create brush if brush
|
|
|
|
if cursorX isnt undefined and rendered <= cursorX < rendered + text.length
|
|
@cursorBrush = brush
|
|
@cursorText = text[cursorX - rendered]
|
|
@cursorX = cursorX
|
|
@cursorY = n
|
|
|
|
@setBackgroundAttributes(brush)
|
|
@ctx.fillRect left, top, text.length * @cellWidth, @cellHeight
|
|
|
|
unless text.match(/^\s*$/)
|
|
@setTextAttributes(brush)
|
|
@ctx.fillText text, left, top + @cellHeight
|
|
|
|
left += text.length * @cellWidth
|
|
rendered += text.length
|
|
|
|
if cursorX
|
|
@renderCursor()
|
|
|
|
setBackgroundAttributes: (brush) ->
|
|
@ctx.fillStyle = AsciiIo.colors[brush.bgColor()]
|
|
|
|
setTextAttributes: (brush) ->
|
|
@ctx.fillStyle = AsciiIo.colors[brush.fgColor()]
|
|
|
|
font = @font
|
|
|
|
if brush.bright or brush.italic
|
|
if brush.bright
|
|
font = "bold #{font}"
|
|
|
|
if brush.italic
|
|
font = "italic #{font}"
|
|
|
|
if font != @prevFont
|
|
@ctx.font = font
|
|
@prevFont = font
|
|
|
|
renderCursor: ->
|
|
return unless @cursorOn and @cursorText
|
|
|
|
x = @cursorX * @cellWidth
|
|
y = @cursorY * @cellHeight
|
|
|
|
if @cursorVisible
|
|
@ctx.fillStyle = AsciiIo.colors[7]
|
|
@ctx.fillRect x, y, @cellWidth, @cellHeight
|
|
@ctx.fillStyle = AsciiIo.colors[0]
|
|
@ctx.fillText @cursorText, x, y + @cellHeight
|
|
else
|
|
@ctx.fillStyle = AsciiIo.colors[@cursorBrush.bgColor()]
|
|
@ctx.fillRect x, y, @cellWidth, @cellHeight
|
|
@ctx.fillStyle = AsciiIo.colors[@cursorBrush.fgColor()]
|
|
@ctx.fillText @cursorText, x, y + @cellHeight
|
|
|
|
showCursor: (show) ->
|
|
@cursorOn = show
|
|
|
|
blinkCursor: ->
|
|
@cursorVisible = !@cursorVisible
|
|
@renderCursor()
|
|
|
|
resetCursorState: ->
|
|
@cursorVisible = true
|
|
@renderCursor()
|