diff options
Diffstat (limited to 'sample')
| -rw-r--r-- | sample/curses/hello.rb | 27 | ||||
| -rw-r--r-- | sample/curses/mouse.rb | 52 | ||||
| -rw-r--r-- | sample/curses/rain.rb | 74 | ||||
| -rw-r--r-- | sample/curses/view.rb | 91 | ||||
| -rw-r--r-- | sample/curses/view2.rb | 149 |
5 files changed, 393 insertions, 0 deletions
diff --git a/sample/curses/hello.rb b/sample/curses/hello.rb new file mode 100644 index 0000000000..a630fb999b --- /dev/null +++ b/sample/curses/hello.rb @@ -0,0 +1,27 @@ +require "curses" + +def show_message(message) + width = message.length + 6 + win = Curses::Window.new(5, width, + (Curses.lines - 5) / 2, (Curses.cols - width) / 2) + win.box('|', '-') + win.setpos(2, 3) + win.addstr(message) + win.refresh + win.getch + win.close +end + +Curses.init_screen +begin + Curses.crmode +# show_message("Hit any key") + Curses.setpos((Curses.lines - 5) / 2, (Curses.cols - 10) / 2) + Curses.addstr("Hit any key") + Curses.refresh + char = Curses.getch + show_message("You typed: #{char}") + Curses.refresh +ensure + Curses.close_screen +end diff --git a/sample/curses/mouse.rb b/sample/curses/mouse.rb new file mode 100644 index 0000000000..cc4beeb83d --- /dev/null +++ b/sample/curses/mouse.rb @@ -0,0 +1,52 @@ +require "curses" + +def show_message(*msgs) + message = msgs.join + width = message.length + 6 + win = Curses::Window.new(5, width, + (Curses.lines - 5) / 2, (Curses.cols - width) / 2) + win.keypad = true + win.attron(Curses.color_pair(Curses::COLOR_RED)){ + win.box(?|, ?-, ?+) + } + win.setpos(2, 3) + win.addstr(message) + win.refresh + win.getch + win.close +end + +Curses.init_screen +Curses.start_color +Curses.init_pair(Curses::COLOR_BLUE, Curses::COLOR_BLUE, Curses::COLOR_WHITE) +Curses.init_pair(Curses::COLOR_RED, Curses::COLOR_RED, Curses::COLOR_WHITE) +Curses.crmode +Curses.noecho +Curses.stdscr.keypad(true) + +begin + Curses.mousemask( + Curses::BUTTON1_CLICKED|Curses::BUTTON2_CLICKED|Curses::BUTTON3_CLICKED|Curses::BUTTON4_CLICKED + ) + Curses.setpos((Curses.lines - 5) / 2, (Curses.cols - 10) / 2) + Curses.attron(Curses.color_pair(Curses::COLOR_BLUE)|Curses::A_BOLD){ + Curses.addstr("click") + } + Curses.refresh + while( true ) + c = Curses.getch + case c + when Curses::KEY_MOUSE + m = Curses::getmouse + if( m ) + show_message("getch = #{c.inspect}, ", + "mouse event = #{'0x%x' % m.bstate}, ", + "axis = (#{m.x},#{m.y},#{m.z})") + end + break + end + end + Curses.refresh +ensure + Curses.close_screen +end diff --git a/sample/curses/rain.rb b/sample/curses/rain.rb new file mode 100644 index 0000000000..845da2f522 --- /dev/null +++ b/sample/curses/rain.rb @@ -0,0 +1,74 @@ +# rain for a curses test + +require "curses" + +def onsig(sig) + Curses.close_screen + exit sig +end + +def ranf + rand(32767).to_f / 32767 +end + +# main # +for i in %w[HUP INT QUIT TERM] + if trap(i, "SIG_IGN") != 0 then # 0 for SIG_IGN + trap(i) {|sig| onsig(sig) } + end +end + +Curses.init_screen +Curses.nl +Curses.noecho +srand + +xpos = {} +ypos = {} +r = Curses.lines - 4 +c = Curses.cols - 4 +for i in 0 .. 4 + xpos[i] = (c * ranf).to_i + 2 + ypos[i] = (r * ranf).to_i + 2 +end + +i = 0 +while TRUE + x = (c * ranf).to_i + 2 + y = (r * ranf).to_i + 2 + + + Curses.setpos(y, x); Curses.addstr(".") + + Curses.setpos(ypos[i], xpos[i]); Curses.addstr("o") + + i = if i == 0 then 4 else i - 1 end + Curses.setpos(ypos[i], xpos[i]); Curses.addstr("O") + + i = if i == 0 then 4 else i - 1 end + Curses.setpos(ypos[i] - 1, xpos[i]); Curses.addstr("-") + Curses.setpos(ypos[i], xpos[i] - 1); Curses.addstr("|.|") + Curses.setpos(ypos[i] + 1, xpos[i]); Curses.addstr("-") + + i = if i == 0 then 4 else i - 1 end + Curses.setpos(ypos[i] - 2, xpos[i]); Curses.addstr("-") + Curses.setpos(ypos[i] - 1, xpos[i] - 1); Curses.addstr("/ \\") + Curses.setpos(ypos[i], xpos[i] - 2); Curses.addstr("| O |") + Curses.setpos(ypos[i] + 1, xpos[i] - 1); Curses.addstr("\\ /") + Curses.setpos(ypos[i] + 2, xpos[i]); Curses.addstr("-") + + i = if i == 0 then 4 else i - 1 end + Curses.setpos(ypos[i] - 2, xpos[i]); Curses.addstr(" ") + Curses.setpos(ypos[i] - 1, xpos[i] - 1); Curses.addstr(" ") + Curses.setpos(ypos[i], xpos[i] - 2); Curses.addstr(" ") + Curses.setpos(ypos[i] + 1, xpos[i] - 1); Curses.addstr(" ") + Curses.setpos(ypos[i] + 2, xpos[i]); Curses.addstr(" ") + + + xpos[i] = x + ypos[i] = y + Curses.refresh + sleep(0.5) +end + +# end of main diff --git a/sample/curses/view.rb b/sample/curses/view.rb new file mode 100644 index 0000000000..bc54aeb9af --- /dev/null +++ b/sample/curses/view.rb @@ -0,0 +1,91 @@ +#!/usr/local/bin/ruby + +require "curses" +include Curses + +# +# main +# + +if ARGV.size != 1 then + printf("usage: view file\n"); + exit +end +begin + fp = open(ARGV[0], "r") +rescue + raise "cannot open file: #{ARGV[1]}" +end + +# signal(SIGINT, finish) + +init_screen +#keypad(stdscr, TRUE) +nonl +cbreak +noecho +#scrollok(stdscr, TRUE) + +# slurp the file +data_lines = [] +fp.each_line { |l| + data_lines.push(l) +} +fp.close + + +lptr = 0 +while TRUE + i = 0 + while i < lines + setpos(i, 0) + #clrtoeol + addstr(data_lines[lptr + i] || '') + i += 1 + end + refresh + + explicit = FALSE + n = 0 + while TRUE + c = getch + if c =~ /[0-9]/ + n = 10 * n + c.to_i + else + break + end + end + + n = 1 if !explicit && n == 0 + + case c + when "n" #when KEY_DOWN + i = 0 + while i < n + if lptr + lines < data_lines.size then + lptr += 1 + else + break + end + i += 1 + end + #wscrl(i) + + when "p" #when KEY_UP + i = 0 + while i < n + if lptr > 0 then + lptr -= 1 + else + break + end + i += 1 + end + #wscrl(-i) + + when "q" + break + end + +end +close_screen diff --git a/sample/curses/view2.rb b/sample/curses/view2.rb new file mode 100644 index 0000000000..037771a226 --- /dev/null +++ b/sample/curses/view2.rb @@ -0,0 +1,149 @@ +#!/usr/local/bin/ruby + +require "curses" + + +# A curses based file viewer +class FileViewer + + # Create a new fileviewer, and view the file. + def initialize(filename) + @data_lines = [] + @screen = nil + @top = nil + init_curses + load_file(filename) + interact + end + + # Perform the curses setup + def init_curses + # signal(SIGINT, finish) + + Curses.init_screen + Curses.nonl + Curses.cbreak + Curses.noecho + + @screen = Curses.stdscr + + @screen.scrollok(true) + #$screen.keypad(true) + end + + # Load the file into memory, and put + # the first part on the curses display. + def load_file(filename) + fp = open(filename, "r") do |fp| + # slurp the file + fp.each_line { |l| + @data_lines.push(l.chop) + } + end + @top = 0 + @data_lines[0..@screen.maxy-1].each_with_index{|line, idx| + @screen.setpos(idx, 0) + @screen.addstr(line) + } + @screen.setpos(0,0) + @screen.refresh + rescue + raise "cannot open file '#{filename}' for reading" + end + + + # Scroll the display up by one line + def scroll_up + if( @top > 0 ) + @screen.scrl(-1) + @top -= 1 + str = @data_lines[@top] + if( str ) + @screen.setpos(0, 0) + @screen.addstr(str) + end + return true + else + return false + end + end + + # Scroll the display down by one line + def scroll_down + if( @top + @screen.maxy < @data_lines.length ) + @screen.scrl(1) + @top += 1 + str = @data_lines[@top + @screen.maxy - 1] + if( str ) + @screen.setpos(@screen.maxy - 1, 0) + @screen.addstr(str) + end + return true + else + return false + end + end + + # Allow the user to interact with the display. + # This uses EMACS-like keybindings, and also + # vi-like keybindings as well, except that left + # and right move to the beginning and end of the + # file, respectively. + def interact + while true + result = true + c = Curses.getch + case c + when Curses::KEY_DOWN, Curses::KEY_CTRL_N, ?j + result = scroll_down + when Curses::KEY_UP, Curses::KEY_CTRL_P, ?k + result = scroll_up + when Curses::KEY_NPAGE, ?\s # white space + for i in 0..(@screen.maxy - 2) + if( ! scroll_down ) + if( i == 0 ) + result = false + end + break + end + end + when Curses::KEY_PPAGE + for i in 0..(@screen.maxy - 2) + if( ! scroll_up ) + if( i == 0 ) + result = false + end + break + end + end + when Curses::KEY_LEFT, Curses::KEY_CTRL_T, ?h + while( scroll_up ) + end + when Curses::KEY_RIGHT, Curses::KEY_CTRL_B, ?l + while( scroll_down ) + end + when ?q + break + else + @screen.setpos(0,0) + @screen.addstr("[unknown key `#{Curses.keyname(c)}'=#{c}] ") + end + if( !result ) + Curses.beep + end + @screen.setpos(0,0) + end + Curses.close_screen + end +end + + +# If we are being run as a main program... +if __FILE__ == $0 + if ARGV.size != 1 then + printf("usage: #{$0} file\n"); + exit + end + + viewer = FileViewer.new(ARGV[0]) +end |