Class: TuiTui::CanvasCompositor

Inherits:
Object
  • Object
show all
Defined in:
lib/tui_tui/canvas_compositor.rb

Overview

Builds the terminal update string. Same-size frames repaint only changed column spans of changed rows.

Instance Method Summary collapse

Constructor Details

#initialize(depth: :ansi256) ⇒ CanvasCompositor

Returns a new instance of CanvasCompositor.



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# File 'lib/tui_tui/canvas_compositor.rb', line 10

def initialize(depth: :ansi256)
  @depth = depth
end

Instance Method Details

#render(previous, canvas) ⇒ Object 



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# File 'lib/tui_tui/canvas_compositor.rb', line 14

def render(previous, canvas)
  out = +""
  renderer = CanvasRenderer.new(canvas)
  if full_repaint?(previous, renderer)
    out << Ansi::CLEAR
    (1..canvas.rows).each { |row| out << row_paint(renderer, row) }
  else
    (1..canvas.rows).each { |row| out << row_diff(renderer, previous, row) }
  end

  out
end