Class: BTetrisKp::TextField

Inherits:
Gosu::TextInput
  • Object
show all
Defined in:
lib/btetris_kp/gui/textfield.rb

Overview

class representing input box for IP adress / port / text

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window, font, x, y, text, filter, width, maxlen) ⇒ TextField

Returns a new instance of TextField.



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# File 'lib/btetris_kp/gui/textfield.rb', line 9

def initialize(window, font, x, y, text, filter, width, maxlen)
  super()
  @window = window
  @font = font
  @x = x
  @y = y
  @width = width
  @filter = filter
  @maxlen = maxlen
  self.text = text
end

Instance Attribute Details

#x ⇒ Object (readonly)

Returns the value of attribute x.



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# File 'lib/btetris_kp/gui/textfield.rb', line 7

def x
  @x
end

#y ⇒ Object (readonly)

Returns the value of attribute y.



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# File 'lib/btetris_kp/gui/textfield.rb', line 7

def y
  @y
end

Instance Method Details

#draw ⇒ Object

draws textfield on window (gosu)



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# File 'lib/btetris_kp/gui/textfield.rb', line 32

def draw
  @window.draw_line(@x - Const::BORDER_GAP, @y + @font.height, Const::CARET_CLR,
                    @x + @width + 2 * Const::BORDER_GAP, @y + @font.height, Const::CARET_CLR)
  unless text.nil?
    # draws the caret if textfield is selected
    pos_x = @x + @font.text_width(text[0...caret_pos])
    if @window.text_input == self
      @window.draw_line(pos_x, @y, Const::CARET_CLR,
                        pos_x, @y + @font.height, Const::CARET_CLR, 0)
    end

    @font.draw(text, @x, @y, 0)
  end
end

#filter(text) ⇒ Object

filters text of characters specified in regexp



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# File 'lib/btetris_kp/gui/textfield.rb', line 22

def filter(text)
  text.upcase.gsub(@filter, '')
end

#mouse_over?(mouse_x, mouse_y) ⇒ Boolean

returns true if mouse is over textfield

Returns:

  • (Boolean) 


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# File 'lib/btetris_kp/gui/textfield.rb', line 48

def mouse_over?(mouse_x, mouse_y)
  mouse_x >= x - Const::BORDER_GAP &&
  mouse_x <= x + @width + Const::BORDER_GAP &&
  mouse_y >= y - Const::BORDER_GAP &&
  mouse_y <= y + @font.height + Const::BORDER_GAP
end

#move_caret(mouse_x) ⇒ Object

moves the caret to the position specified by mouse



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# File 'lib/btetris_kp/gui/textfield.rb', line 56

def move_caret(mouse_x)
  1.upto(text.length) do |i|
    if mouse_x < x + @font.text_width(text[0...i])
      self.caret_pos = self.selection_start = i - 1
      return
    end
  end
  self.caret_pos = self.selection_start = text.length
end

#update ⇒ Object

updates textfield, limits length of text to @maxlen



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# File 'lib/btetris_kp/gui/textfield.rb', line 27

def update
  self.text = text.slice(0...@maxlen) if text.size > @maxlen
end