Class: Cosmos::RangebarWidget

Inherits:
LimitsbarWidget show all
Defined in:
lib/cosmos/tools/tlm_viewer/widgets/rangebar_widget.rb

Instance Attribute Summary

Attributes included from Widget

#item, #item_name, #limits_set, #limits_state, #packet, #packet_name, #polling_period, #screen, #settings, #target_name, #value, #value_type

Instance Method Summary collapse

Methods inherited from LimitsbarWidget

takes_value?

Methods inherited from LimitsWidget

#calculate_widths, #get_limits, #paintEvent, #value=

Methods included from Widget

#context_menu, #get_tooltip_text, included, #process_settings, #set_setting, #set_subsetting, #shutdown, #update_widget

Constructor Details

#initialize(parent_layout, target_name, packet_name, item_name, low_value, high_value, value_type = :CONVERTED, width = 160, height = 25) ⇒ RangebarWidget

Returns a new instance of RangebarWidget.



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# File 'lib/cosmos/tools/tlm_viewer/widgets/rangebar_widget.rb', line 17

def initialize (parent_layout, target_name, packet_name, item_name, low_value, high_value, value_type = :CONVERTED, width = 160, height = 25)
  super(parent_layout, target_name, packet_name, item_name, value_type, width, height)
  @low_value = low_value.to_s.convert_to_value
  @high_value = high_value.to_s.convert_to_value
end

Instance Method Details

#paint_implementation(dc) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/rangebar_widget.rb', line 23

def paint_implementation(dc)
  # Fill the rectangle with white
  dc.addRectColorFill(@x_pad, @y_pad, @width - @x_pad - @x_pad, @height - @y_pad - @y_pad, "white")

  # Draw line at current value
  @bar_scale = @high_value - @low_value

  @line_pos = (@x_pad + (@value - @low_value) / @bar_scale * @bar_width).to_i
  if @line_pos < @x_pad
    @line_pos = @x_pad
  end
  if @line_pos > @x_pad + @bar_width
    @line_pos = @bar_width + @x_pad
  end

  dc.addLineColor(@line_pos, @y_pad - 3, @line_pos, @y_pad + @bar_height + 3)

  # Draw triangle above current value line
  top_triangle = Qt::Polygon.new(3)
  top_triangle.setPoint(0, @line_pos, @y_pad - 1)
  top_triangle.setPoint(1, @line_pos-5, @y_pad - 6)
  top_triangle.setPoint(2, @line_pos+5, @y_pad - 6)
  dc.setBrush(Cosmos::BLACK)
  dc.drawPolygon(top_triangle)

  # Draw overall border
  dc.addRectColor(@x_pad, @y_pad, @width - @x_pad - @x_pad, @height - @y_pad - @y_pad)

  #Additional drawing for subclasses
  additional_drawing(dc)
end