Class: VMTreeItemRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/VMTreeItemRenderer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, color_callback, w = nil) ⇒ VMTreeItemRenderer

Returns a new instance of VMTreeItemRenderer.



6
7
8
9
10
 
# File 'lib/VMTreeItemRenderer.rb', line 6

def initialize parent, color_callback, w=nil 
  @parent = parent
  @color_callback = color_callback
  @display_length = w || 10
end

Instance Attribute Details

#display_length ⇒ Object

Returns the value of attribute display_length.



4
5
6
 
# File 'lib/VMTreeItemRenderer.rb', line 4

def display_length
  @display_length
end

Instance Method Details

#repaint(graphic, r = nil, c = nil, idx = -1,, value = '', focussed = false, selected = false) ⇒ Object 



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/VMTreeItemRenderer.rb', line 11

def repaint graphic, r=nil,c=nil, idx=-1,value='', focussed=false, selected=false
  return if r.nil? or c.nil? or idx == -1
  attr = 'bold'
  bgcolor = focussed ? 'yellow' : 'black'
  fgcolor = @color_callback.call idx
  if fgcolor == 'grey'
    attr = nil
    fgcolor = 'white'
  end
  color_pair = ColorMap.get_color fgcolor, bgcolor
  # ensure we do not exceed
  if !@display_length.nil?
    value = value[0..@display_length-1] if value.length > @display_length
  end
  len = @display_length || value.length
  graphic.printstring r, c, '%-*s' % [len, value], color_pair, attr
end