Class: Wmadd

Inherits:
Object
  • Object
show all
Defined in:
lib/wmadd.rb,
lib/wmadd/x.rb,
lib/wmadd/version.rb

Overview

Wmadd

Defined Under Namespace

Modules: X, X11

Constant Summary collapse

DEFAULT_OPACITY = 
0xFFFFFFFF
OVERWRAP_OPACITY = 
0x80000000
VERSION = 
"0.1.0"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Wmadd

Returns a new instance of Wmadd.



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# File 'lib/wmadd.rb', line 17

def initialize
  @display = X::Display.new
  @root = @display.default_root_window
  @timer = Tmtms::Timer.new
end

Class Method Details

.start ⇒ Object 



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# File 'lib/wmadd.rb', line 13

def self.start
  self.new.start
end

Instance Method Details

#display_osd(win = nil) ⇒ Object 



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# File 'lib/wmadd.rb', line 58

def display_osd(win=nil)
  if win
    wm_win = wm_window(win) or return
    hints = wm_win.wm_normal_hints or return
    top_win = top_window(win) or return

    x, y = top_win.geometry.then{[_1.x, _1.y]}
    width, height = win.geometry.then{[_1.width, _1.height]}

    @osd_x = x + ((width - 200) / 2)
    @osd_y = y + ((height - 50) / 2)
    @osd_str = "#{width} x #{height} +#{x}+#{y}"
    if hints.width_inc > 0 && hints.height_inc > 0
      width -= hints.base_width
      height -= hints.base_height
      @osd_str += "  (#{width / hints.width_inc} x #{height / hints.height_inc})"
    end
  end

  @osd.map_window
  @osd.clear
  @gc.draw_string(10, 30, @osd_str)
  @osd.move_window(@osd_x, @osd_y)
  @display.flush
  @job&.cancel
  @job = @timer.set(1) do
    @osd.unmap_window
    @display.flush
  end
end

#lazy_reset_opacity ⇒ Object 



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# File 'lib/wmadd.rb', line 89

def lazy_reset_opacity
  @reset_opacity_job&.cancel
  @reset_opacity_job = @timer.set(0.1){reset_opacity}
end

#overwrap?(w1, w2) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wmadd.rb', line 131

def overwrap?(w1, w2)
  g1 = top_window(w1).geometry
  g2 = top_window(w2).geometry
  g1.x < g2.x+g2.width && g1.x+g1.width > g2.x && g1.y < g2.y+g2.height && g1.y+g1.height > g2.y
end

#reset_opacity ⇒ Object 



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# File 'lib/wmadd.rb', line 112

def reset_opacity
  return unless @root.active_window
  active_win = wm_window(@root.active_window) or return

  f = false
  window_list.each do |w|
    if active_win.id == w.id
      f = true
      set_default_opacity(w)
      next
    end
    if f && overwrap?(w, active_win)
      set_overwrap_opacity(w)
      next
    end
    set_default_opacity(w)
  end
end

#set_default_opacity(win) ⇒ Object 



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# File 'lib/wmadd.rb', line 137

def set_default_opacity(win)
  win.change_property_cardinal(:_NET_WM_WINDOW_OPACITY, X::PROP_MODE_REPLACE, DEFAULT_OPACITY)
end

#set_overwrap_opacity(win) ⇒ Object 



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# File 'lib/wmadd.rb', line 141

def set_overwrap_opacity(win)
  win.change_property_cardinal(:_NET_WM_WINDOW_OPACITY, X::PROP_MODE_REPLACE, OVERWRAP_OPACITY)
end

#start ⇒ Object 



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# File 'lib/wmadd.rb', line 23

def start
  window_list.each do |w|
    watch_resize_event(w)
  end

  @root.select_input(X::SUBSTRUCTURE_NOTIFY_MASK | X::PROPERTY_CHANGE_MASK)
  @osd = @root.create_simple_window(100, 100, 200, 50, 0, 0, 0xe0e0e0)
  @osd.change_property_atom(:_NET_WM_WINDOW_TYPE, X::PROP_MODE_REPLACE, :_NET_WM_WINDOW_TYPE_NOTIFICATION)
  @osd.select_input(X::EXPOSURE_MASK)
  @gc = @osd.create_gc
  @gc.set_background(0xe0e0e0)
  @gc.set_foreground(0)
  @gc.set_font(@display.load_font("fixed"))

  while true
    ev = @display.next_event
    case ev
    when X::CreateWindowEvent
      window_list.each do |w|
        watch_resize_event(w)
      end
    when X::ExposeEvent
      display_osd if ev.window == @osd.id
    when X::PropertyEvent
      if ev.atom == @display.intern_atom(:_NET_ACTIVE_WINDOW)
        reset_opacity
      end
    when X::ConfigureEvent
      lazy_reset_opacity
      win = X::Window.new(@display, ev.window)
      display_osd(win)
    end
  end
end

#top_window(win) ⇒ Object 



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# File 'lib/wmadd.rb', line 94

def top_window(win)
  top = win
  while top.parent.id != @root.id
    top = top.parent
  end
  top
end

#watch_resize_event(win) ⇒ Object 



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# File 'lib/wmadd.rb', line 157

def watch_resize_event(win)
  win.select_input(X::STRUCTURE_NOTIFY_MASK)
end

#window_list(win = @root) ⇒ Object 



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# File 'lib/wmadd.rb', line 145

def window_list(win=@root)
  list = []
  win.query_tree&.each do |w|
    if w.window_attributes.map_state == X::IS_VIEWABLE && w.window_type == :normal
      list.push w
    else
      list.push window_list(w)
    end
  end
  list.flatten
end

#wm_window(win) ⇒ Object 



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# File 'lib/wmadd.rb', line 102

def wm_window(win)
  while win && win.parent&.id != @root.id
    if win.window_attributes.map_state == X::IS_VIEWABLE && win.window_type == :normal
      return win
    end
    win = win.parent
  end
  nil
end