Method: MiniGL::TextField#update

Defined in:
lib/minigl/forms.rb

#update ⇒ Object

Updates the text field, checking for mouse events and keyboard input.



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# File 'lib/minigl/forms.rb', line 688

def update
  return unless @enabled and @visible

  ################################ Mouse ################################
  if Mouse.over? @x, @y, @w, @h
    if not @active and Mouse.button_pressed? :left
      focus
    end
  elsif Mouse.button_pressed? :left
    unfocus
  end

  return unless @active

  if Mouse.double_click? :left
    if @nodes.size > 1
      @anchor1 = 0
      @anchor2 = @nodes.size - 1
      @cur_node = @anchor2
      @double_clicked = true
    end
    set_cursor_visible
  elsif Mouse.button_pressed? :left
    set_node_by_mouse
    @anchor1 = @cur_node
    @anchor2 = nil
    @double_clicked = false
    set_cursor_visible
  elsif Mouse.button_down? :left
    if @anchor1 and not @double_clicked
      set_node_by_mouse
      if @cur_node != @anchor1; @anchor2 = @cur_node
      else; @anchor2 = nil; end
      set_cursor_visible
    end
  elsif Mouse.button_released? :left
    if @anchor1 and not @double_clicked
      if @cur_node != @anchor1; @anchor2 = @cur_node
      else; @anchor1 = nil; end
    end
  end

  @cursor_timer += 1
  if @cursor_timer >= 30
    @cursor_visible = (not @cursor_visible)
    @cursor_timer = 0
  end

  ############################### Keyboard ##############################
  shift = (KB.key_down?(@k[53]) or KB.key_down?(@k[54]))
  if KB.key_pressed?(@k[53]) or KB.key_pressed?(@k[54]) # shift
    @anchor1 = @cur_node if @anchor1.nil?
  elsif KB.key_released?(@k[53]) or KB.key_released?(@k[54])
    @anchor1 = nil if @anchor2.nil?
  end
  inserted = false
  for i in 0..46 # alnum
    if KB.key_pressed?(@k[i]) or KB.key_held?(@k[i])
      remove_interval true if @anchor1 and @anchor2
      if i < 26
        if shift
          insert_char @chars[i + 37]
        else
          insert_char @chars[i]
        end
      elsif i < 36
        if shift; insert_char @chars[i + 59]
        else; insert_char @chars[i]; end
      elsif shift
        insert_char(@chars[i + 49])
      else
        insert_char(@chars[i - 10])
      end
      inserted = true
      break
    end
  end

  return if inserted
  for i in 55..65 # special
    if KB.key_pressed?(@k[i]) or KB.key_held?(@k[i])
      remove_interval true if @anchor1 and @anchor2
      if shift; insert_char @chars[i + 19]
      else; insert_char @chars[i + 8]; end
      inserted = true
      break
    end
  end

  return if inserted
  for i in 66..69 # numpad operators
    if KB.key_pressed?(@k[i]) or KB.key_held?(@k[i])
      remove_interval true if @anchor1 and @anchor2
      insert_char @chars[i + 19]
      inserted = true
      break
    end
  end

  return if inserted
  if KB.key_pressed?(@k[47]) or KB.key_held?(@k[47]) # back
    if @anchor1 and @anchor2
      remove_interval
    elsif @cur_node > 0
      remove_char true
    end
  elsif KB.key_pressed?(@k[48]) or KB.key_held?(@k[48]) # del
    if @anchor1 and @anchor2
      remove_interval
    elsif @cur_node < @nodes.size - 1
      remove_char false
    end
  elsif KB.key_pressed?(@k[49]) or KB.key_held?(@k[49]) # left
    if @anchor1
      if shift
        if @cur_node > 0
          @cur_node -= 1
          @anchor2 = @cur_node
          set_cursor_visible
        end
      elsif @anchor2
        @cur_node = @anchor1 < @anchor2 ? @anchor1 : @anchor2
        @anchor1 = nil
        @anchor2 = nil
        set_cursor_visible
      end
    elsif @cur_node > 0
      @cur_node -= 1
      set_cursor_visible
    end
  elsif KB.key_pressed?(@k[50]) or KB.key_held?(@k[50]) # right
    if @anchor1
      if shift
        if @cur_node < @nodes.size - 1
          @cur_node += 1
          @anchor2 = @cur_node
          set_cursor_visible
        end
      elsif @anchor2
        @cur_node = @anchor1 > @anchor2 ? @anchor1 : @anchor2
        @anchor1 = nil
        @anchor2 = nil
        set_cursor_visible
      end
    elsif @cur_node < @nodes.size - 1
      @cur_node += 1
      set_cursor_visible
    end
  elsif KB.key_pressed?(@k[51]) # home
    @cur_node = 0
    if shift; @anchor2 = @cur_node
    else
      @anchor1 = nil
      @anchor2 = nil
    end
    set_cursor_visible
  elsif KB.key_pressed?(@k[52]) # end
    @cur_node = @nodes.size - 1
    if shift; @anchor2 = @cur_node
    else
      @anchor1 = nil
      @anchor2 = nil
    end
    set_cursor_visible
  end
end