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|
#!/usr/bin/ruby
#
# @file Selector
#
# @copyright (c) 2011-2012, Christoph Kappel <unexist@dorfelite.net>
# @version $Id$
#
# Client selector that works like the subscription selector in google reader.
#
# Colors:
#
# Focus - Currently selected client
# Occupied - Visible clients on current views
# Unoccupied - Currently no visible clients
#
# Keys:
#
# Left, Up - Move to left
# Right, Down - Move to right
# Tab - Cycle through windows/matches
# Escape - Leave input mode/exit selector
# Return - Focus currently selected and hide/exit selector
# Any capital/digit - Select client prefixed with capital letter/digit
# Any text - Select client with matching instance name
#
# http://subforge.org/projects/subtle-contrib/wiki/Selector
#
require 'singleton'
begin
require 'subtle/subtlext'
rescue LoadError
puts ">>> ERROR: Couldn't find subtlext"
exit
end
# Check for subtlext version
major, minor, teeny = Subtlext::VERSION.split('.').map(&:to_i)
if major == 0 and minor == 10 and 3216 > teeny
puts ">>> ERROR: selector needs at least subtle `0.10.3216' (found: %s)" % [
Subtlext::VERSION
]
exit
end
# Launcher class
module Subtle # {{{
module Contrib # {{{
class Selector # {{{
include Singleton
# Prefix letters
LETTERS = ((49..57).to_a|(65..89).to_a).map(&:chr)
# Default values
@@font = '-*-*-medium-*-*-*-14-*-*-*-*-*-*-*'
# Singleton methods
## fonts {{{
# Set font strings
# @param [String] fonts Fonts array
##
def self.font=(font)
@@font = font
end # }}}
## run {{{
# Run expose
##
def self.run
self.instance.run
end # }}}
# Instance methods
## initialize {{{
# Create expose instance
##
def initialize
# Values
@colors = Subtlext::Subtle.colors
@expanded = false
@buffer = ''
@x = 0
@y = 0
@width = 0
@height = 0
# Create main window
@win = Subtlext::Window.new(:x => 0, :y => 0, :width => 1, :height => 1) do |w|
w.name = 'Selector'
w.font = @@font
w.foreground = @colors[:title_fg]
w.background = @colors[:title_bg]
w.border_size = 0
end
# Font metrics
@font_height = @win.font_height + 6
@font_y = @win.font_y
# Handler
@win.on :key_down, method(:key_down)
@win.on :draw, method(:redraw)
end # }}}
## run {{{
# Show and run launcher
##
def run
update
show
hide
end # }}}
private
## key_down {{{
# Key down handler
# @param [String] key Pressed key
##
def key_down(key, mods)
ret = true
case key
when :left, :up # {{{
idx = @clients.index(@current) || 0
idx -= 1 if 0 < idx
@current = @clients[idx] # }}}
when :right, :down # {{{
idx = @clients.index(@current) || 0
idx += 1 if idx < (@clients.size - 1)
@current = @clients[idx] # }}}
when :return # {{{
@current.focus
ret = false # }}}
when :escape # {{{
if @expanded
@buffer = ''
@expanded = false
else
ret = false
end
arrange # }}}
when :backspace # {{{
if @expanded
@expanded = (0 < @buffer.chop!.size)
arrange
end # }}}
when :tab # {{{
if @buffer.empty?
clients = @clients
else
# Select matching clients
clients = @clients.select do |c|
c.instance.downcase.start_with?(@buffer)
end
end
unless (idx = clients.index(@current)).nil?
# Cycle between clients
if idx < (clients.size - 1)
idx += 1
else
idx = 0
end
@current = clients[idx]
end # }}}
else # {{{
str = key.to_s
if !(idx = LETTERS.index(str)).nil? and idx < @clients.size
@clients[idx].focus
ret = false
elsif !str.empty?
@buffer << str.downcase
@clients.each do |c|
if c.instance.downcase.start_with?(@buffer)
@current = c
break
end
end
arrange
end # }}}
end
redraw(@win) if ret
ret
end # }}}
## update # {{{
# Update clients and windows
##
def update
@buffer = ''
@clients = Subtlext::Client.all
@visible = Subtlext::Client.visible
@current = Subtlext::Client.current rescue nil
arrange
end # }}}
## arrange {{{
# Arrange window
##
def arrange
geo = Subtlext::Screen.current.geometry
@width = geo.width * 50 / 100 #< Max width
@height = @font_height
wx = 0
wy = 0
len = 0
wwidth = 0
# Toggle expand
if @buffer.empty?
@height = @font_height
@expanded = false
else
@height += @font_height
@expanded = true
end
# Calculate window width
@clients.each_with_index do |c, i|
str = '%s:%s' % [ LETTERS[i], c.instance ]
len = @win.font_width(str) + 6
# Wrap lines
if wx + len > @width
wwidth = wx if wx > wwidth
wx = 0
wy += @font_height
end
wx += len
end
# Update window geometry
@width = 0 == wwidth ? wx : wwidth
@height += wy
@x = geo.x + ((geo.width - @width) / 2)
@y = geo.y + ((geo.height - @height) / 2)
@win.geometry = [ @x , @y, @width, @height ]
end # }}}
## redraw {{{
# Redraw window content
# @param [Window] w Window instance
##
def redraw(w)
wx = 0
wy = 0
len = 0
wwidth = 0
@win.clear
# Render window
@clients.each_with_index do |c, i|
str = '%s:%s' % [ LETTERS[i], c.instance ]
len = @win.font_width(str) + 6
# Wrap lines
if wx + len > @width
wwidth = wx if wx > wwidth
wx = 0
wy += @font_height
end
# Select color
if @clients[i] == @current
fg = @colors[:focus_fg]
bg = @colors[:focus_bg]
elsif @visible.include?(@clients[i])
fg = @colors[:occupied_fg]
bg = @colors[:occupied_bg]
else
fg = @colors[:views_fg]
bg = @colors[:views_bg]
end
@win.draw_rect(wx, wy, len, @font_height, bg, true)
@win.draw_text(wx + 3, wy + @font_y + 3, str, fg)
wx += len
end
# Draw input buffer
unless @buffer.empty?
@win.draw_text(6, @height - @font_height + @font_y + 3,
'Input: %s' % [ @buffer ])
end
end # }}}
## show {{{
# Show launcher
##
def show
@win.show
end # }}}
## hide # {{{
# Hide launcher
##
def hide
@win.hide
end # }}}
end # }}}
end # }}}
end # }}}
# Implicitly run
if __FILE__ == $0
# Set font
#Subtle::Contrib::Selector.font =
# 'xft:DejaVu Sans Mono:pixelsize=80:antialias=true'
Subtle::Contrib::Selector.run
end
# vim:ts=2:bs=2:sw=2:et:fdm=marker
|