class SmoothTerminalPrint - smooth_terminal

Public Class Methods

new() click to toggle source

# File lib/smooth_terminal_print.rb, line 7
def initialize
        update_screen_dimensions

        trap('SIGINT')   { stop_smooth_printing_mode; exit }
        trap('SIGWINCH') { update_screen_dimensions }
        at_exit          { stop_smooth_printing_mode }
end

Public Instance Methods

print_smoothly(io=nil) { || ... } click to toggle source

# File lib/smooth_terminal_print.rb, line 15
def print_smoothly(io=nil, &block)
        print(hide_cursor)
        print(move_to_top_left)

        if(io)
                print_text(io)
        else
                io = StringIO.new
                $stdout = io
                yield
                $stdout = STDOUT
                io.rewind
                print_text(io)
        end
end

stop_smooth_printing_mode() click to toggle source

# File lib/smooth_terminal_print.rb, line 31
def stop_smooth_printing_mode
        print(move_to_bottom)
        print(show_cursor)
end

Private Instance Methods

print_text(io) click to toggle source

# File lib/smooth_terminal_print.rb, line 42
def print_text(io)
        io.rewind

        0.upto(@num_lines) do
                line = io.gets

                if line.nil?
                        line = ''
                else
                        line.strip!
                end

                line << clear_to_line_end
                line << "\r\n"

                puts line
        end
end

update_screen_dimensions() click to toggle source

# File lib/smooth_terminal_print.rb, line 37
def update_screen_dimensions
        @num_lines = `tput lines`.strip.to_i - 2
        @columns   = `tput cols`.strip.to_i - 5
end