Module: WindowResizer

Defined in:
lib/window_resizer.rb

Overview

A basic utility module that wraps command line tools xrandr (for detecting current X screen resolution) and wmctrl (for setting current window’s position and size)

Class Method Summary collapse

Class Method Details

.resize_current_to(options) ⇒ Object

Will resize the current window to :positions => => 123, :y => 123 and with :resize_factors => => 0.85, :y => 0.76

Resize factors are relative to full screen resolution, so 1.0 is 1920 pixels X in a 1920*1200 resolution, 0.5 would be 960 and so on…

Position can also be :left, :center, :right for :x, :top, :bottom, :center for :y



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# File 'lib/window_resizer.rb', line 30

def self.resize_current_to(options)
  raise "Please specify :positions => {:x => 123, :y => 123} and :resize_factors => {:x => 0.85, :y => 0.76}" if not options[:positions] or not options[:resize_factors]
  # Calculate desired window sizes 
  window_sizes = {:x => (resolution[:x]*options[:resize_factors][:x]).to_i, 
                  :y => (resolution[:y]*options[:resize_factors][:y]).to_i}
  
  options[:positions] = process_positions(options[:positions], window_sizes)
  
  # Invoke wmctrl with the given parameters
  `wmctrl -r :ACTIVE: -e 4,#{options[:positions][:x]},#{options[:positions][:y]},#{window_sizes[:x]},#{window_sizes[:y]}`
end

.resolution ⇒ Object

Getter for current resolution



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# File 'lib/window_resizer.rb', line 9

def self.resolution
  @@resolution ||= update_resolutions
end

.update_resolutions ⇒ Object

Retrieve and assign the current X screen resolution by invoking xrandr and parsing the output



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# File 'lib/window_resizer.rb', line 16

def self.update_resolutions
  `xrandr` =~ /current ([^x]*)x([^,]*),/
  @@resolution = {:x => $1.strip.chomp.to_i, :y => $2.strip.chomp.to_i} 
end