Class: Cosmos::LimitsbarWidget

Inherits:
Qt::Label
  • Object
show all
Includes:
Widget
Defined in:
lib/cosmos/tools/tlm_viewer/widgets/limitsbar_widget.rb

Direct Known Subclasses

RangebarWidget, TrendbarWidget

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

Class Method Summary collapse

Instance Method Summary collapse

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, value_type = :CONVERTED, width = 160, height = 25) ⇒ LimitsbarWidget

Returns a new instance of LimitsbarWidget.



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitsbar_widget.rb', line 18

def initialize(parent_layout, target_name, packet_name, item_name, value_type = :CONVERTED, width = 160, height = 25)
  super(target_name, packet_name, item_name, value_type)
  @value_type = :CONVERTED if @value_type == :WITH_UNITS
  @width = width.to_i
  @height = height.to_i
  @value = 0
  @x_pad = 6
  @y_pad = 6
  @bar_width = @width - (2 * @x_pad)
  @bar_height = @height - (2 * @y_pad)
  @painter = nil
  setFixedSize(width.to_i, height.to_i)
  parent_layout.addWidget(self) if parent_layout
end

Class Method Details

.takes_value? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitsbar_widget.rb', line 33

def LimitsbarWidget.takes_value?
  return true
end

Instance Method Details

#paint_implementation(dc) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitsbar_widget.rb', line 57

def paint_implementation(dc)
  draw_bar = true

  limits_values = @item.limits.values
  if limits_values
    limits = limits_values[@limits_set]
    limits = limits_values[:DEFAULT] unless limits
    if limits
      red_low = limits[0]
      yellow_low = limits[1]
      yellow_high = limits[2]
      red_high = limits[3]
      green_low = limits[4]
      green_high = limits[5]
    else
      draw_bar = false
    end
  else
    draw_bar = false
  end

  if draw_bar
    # Calculate sizes of limits sections
    red_low_width  = (0.1 * @bar_width).round
    red_high_width = (0.1 * @bar_width).round

    inner_value_range = red_high - red_low

    yellow_low_width  = ((yellow_low - red_low)   / inner_value_range * 0.8 * @bar_width).round
    yellow_high_width = ((red_high - yellow_high) / inner_value_range * 0.8 * @bar_width).round

    if green_high
      green_low_width  = ((green_low - yellow_low)   / inner_value_range * 0.8 * @bar_width).round
      green_high_width = ((yellow_high - green_high) / inner_value_range * 0.8 * @bar_width).round
      blue_width = @bar_width - red_low_width - yellow_low_width - green_low_width - green_high_width - yellow_high_width - red_high_width
    else
      green_width = @bar_width - red_low_width - yellow_low_width - yellow_high_width - red_high_width
    end

    # Set starting points
    x_pos = @x_pad
    y_pos = @y_pad

    # Draw RED_LOW bar
    dc.addRectColorFill(x_pos, y_pos, red_low_width, @bar_height, 'red')
    dc.addRectColor(x_pos, y_pos, red_low_width, @bar_height)
    x_pos += red_low_width

    # Draw YELLOW_LOW bar
    dc.addRectColorFill(x_pos, y_pos, yellow_low_width, @bar_height, 'yellow')
    dc.addRectColor(x_pos, y_pos, yellow_low_width, @bar_height)
    x_pos += yellow_low_width

    if green_high
      # Draw GREEN_LOW bar
      dc.addRectColorFill(x_pos, y_pos, green_low_width, @bar_height, 'lime')
      dc.addRectColor(x_pos, y_pos, green_low_width, @bar_height)
      x_pos += green_low_width

      # Draw BLUE bar
      dc.addRectColorFill(x_pos, y_pos, blue_width, @bar_height, 'dodgerblue')
      dc.addRectColor(x_pos, y_pos, blue_width, @bar_height)
      x_pos += blue_width

      # Draw GREEN_HIGH bar
      dc.addRectColorFill(x_pos, y_pos, green_high_width, @bar_height, 'lime')
      dc.addRectColor(x_pos, y_pos, green_high_width, @bar_height)
      x_pos += green_high_width
    else
      # Draw GREEN bar
      dc.addRectColorFill(x_pos, y_pos, green_width, @bar_height, 'lime')
      dc.addRectColor(x_pos, y_pos, green_width, @bar_height)
      x_pos += green_width
    end

    # Draw YELLOW_HIGH bar
    dc.addRectColorFill(x_pos, y_pos, yellow_high_width, @bar_height, 'yellow')
    dc.addRectColor(x_pos, y_pos, yellow_high_width, @bar_height)
    x_pos += yellow_high_width

    # Draw RED_HIGH bar
    dc.addRectColorFill(x_pos, y_pos, red_high_width, @bar_height, 'red')
    dc.addRectColor(x_pos, y_pos, red_high_width, @bar_height)
    x_pos += red_high_width

    # Draw line at current value
    @bar_scale = (red_high - red_low) / 0.8
    @low_value = red_low - 0.1 * @bar_scale
    @high_value = red_high + 0.1 * @bar_scale

    @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.getBrush(Cosmos::BLACK))
    dc.drawPolygon(top_triangle)
    top_triangle.dispose

    #Additional drawing for subclasses
    additional_drawing(dc)
  end # if draw_bar == true
end

#paintEvent(event) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitsbar_widget.rb', line 42

def paintEvent(event)
  begin
    return if @painter
    @painter = Qt::Painter.new(self)
    # Seems like on initialization sometimes we get some weird bad conditions so check for them
    if @painter.isActive and @painter.paintEngine
      paint_implementation(@painter)
    end
    @painter.dispose
    @painter = nil
  rescue Exception => err
    Cosmos.handle_fatal_exception(err)
  end
end

#value=(data) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitsbar_widget.rb', line 37

def value= (data)
  @value = data.to_f
  update()
end