Class: Canis::AbstractTextPadRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/canis/core/widgets/textpad.rb

Overview

renderer {{{ Very basic renderer that only prints based on color pair of the textpad

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source = nil) ⇒ AbstractTextPadRenderer

Returns a new instance of AbstractTextPadRenderer.



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# File 'lib/canis/core/widgets/textpad.rb', line 1541

def initialize source=nil
  @source = source
end

Instance Attribute Details

#attr ⇒ Object

attribute for row, color_pair, and the Ncurses int for the colorpair



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# File 'lib/canis/core/widgets/textpad.rb', line 1534

def attr
  @attr
end

#color_pair ⇒ Object

attribute for row, color_pair, and the Ncurses int for the colorpair



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# File 'lib/canis/core/widgets/textpad.rb', line 1534

def color_pair
  @color_pair
end

#content_cols ⇒ Object

content cols is the width in columns of pad list is the data array



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# File 'lib/canis/core/widgets/textpad.rb', line 1537

def content_cols
  @content_cols
end

#cp ⇒ Object

attribute for row, color_pair, and the Ncurses int for the colorpair



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# File 'lib/canis/core/widgets/textpad.rb', line 1534

def cp
  @cp
end

#list ⇒ Object

content cols is the width in columns of pad list is the data array



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# File 'lib/canis/core/widgets/textpad.rb', line 1537

def list
  @list
end

#source ⇒ Object

the widget this is associated with.



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# File 'lib/canis/core/widgets/textpad.rb', line 1539

def source
  @source
end

Instance Method Details

#pre_render ⇒ Object Also known as: update_colors

have the renderer get the latest colors from the widget. Override this if for some reason the renderer wishes to hardcode its own. But then the widgets colors would be changed ?



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# File 'lib/canis/core/widgets/textpad.rb', line 1547

def pre_render
  @attr = @source.attr
  cp = get_color($datacolor, @source.color(), @source.bgcolor())
  @color_pair = @source.color_pair || cp
  @cp = FFI::NCurses.COLOR_PAIR(cp)
end

#render(pad, lineno, text) ⇒ Object

concrete / derived classes should override this for their specific uses. Called if only a row is changed.



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# File 'lib/canis/core/widgets/textpad.rb', line 1574

def render pad, lineno, text
  FFI::NCurses.mvwaddstr(pad, lineno, 0, @clearstring) if @clearstring
  FFI::NCurses.mvwaddstr(pad, lineno, 0, text)
end

#render_all(pad, arr) ⇒ Object

derived classes may choose to override this. However, they should set size and color and attrib at the start since these can change after the object has been created depending on the application.



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# File 'lib/canis/core/widgets/textpad.rb', line 1558

def render_all pad, arr
  pre_render
  @content_cols = @source.pad_cols
  @clearstring = " " * @content_cols
  @list = arr

  att = @attr || NORMAL
  FFI::NCurses.wattron(pad, @cp | att)

  arr.each_with_index { |line, ix|
    render pad, ix, line
  }
  FFI::NCurses.wattroff(pad, @cp | att)
end