Class: Cosmos::LimitscolumnWidget

Inherits:
LimitsWidget show all
Defined in:
lib/cosmos/tools/tlm_viewer/widgets/limitscolumn_widget.rb

Overview

Draw a column which consists of the red low, yellow low, green with potentially a blue operational limits inside it, yellow high, and red high. Then draw a horizontal black bar with a little black triangle at the current value location.

Direct Known Subclasses

RangecolumnWidget

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 inherited from LimitsWidget

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

Methods included from Widget

#context_menu, #get_image, #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 = 30, height = 100) ⇒ LimitscolumnWidget

Returns a new instance of LimitscolumnWidget.



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

def initialize(parent_layout, target_name, packet_name, item_name, value_type = :CONVERTED, width = 30, height = 100)
  super(parent_layout, target_name, packet_name, item_name, value_type, width, height)
end

Class Method Details

.takes_value? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitscolumn_widget.rb', line 22

def LimitscolumnWidget.takes_value?
  return true
end

Instance Method Details

#paint_implementation(dc) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitscolumn_widget.rb', line 26

def paint_implementation(dc)
  limits = get_limits()
  return unless limits

  limits, widths = calculate_widths(limits, @bar_height, @min_value, @max_value)

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

  # Draw RED_LOW bar
  dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.red_low, 'red')
  dc.addRectColor(x_pos, y_pos, @bar_width, widths.red_low)
  y_pos += widths.red_low

  # Draw YELLOW_LOW bar
  dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.yellow_low, 'yellow')
  dc.addRectColor(x_pos, y_pos, @bar_width, widths.yellow_low)
  y_pos += widths.yellow_low

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

    # Draw BLUE bar
    dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.blue, 'dodgerblue')
    dc.addRectColor(x_pos, y_pos, @bar_width, widths.blue)
    y_pos += widths.blue

    # Draw GREEN_HIGH bar
    dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.green_high, 'lime')
    dc.addRectColor(x_pos, y_pos, @bar_width, widths.green_high)
    y_pos += widths.green_high
  else
    # Draw GREEN bar
    dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.green, 'lime')
    dc.addRectColor(x_pos, y_pos, @bar_width, widths.green)
    y_pos += widths.green
  end

  # Draw YELLOW_HIGH bar
  dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.yellow_high, 'yellow')
  dc.addRectColor(x_pos, y_pos, @bar_width, widths.yellow_high)
  y_pos += widths.yellow_high

  # Draw RED_HIGH bar
  dc.addRectColorFill(x_pos, y_pos, @bar_width, widths.red_high, 'red')
  dc.addRectColor(x_pos, y_pos, @bar_width, widths.red_high)
  y_pos += widths.red_high

  # Draw line at current value
  red_low = limits[0]
  red_high = limits[3]
  # Start with a diviser of 0.8 assuming we'll draw red limits
  diviser = 0.8
  # If there is a min or max value equal to the min or or max red limit
  # it means we're not drawing red bar and the diviser increases
  diviser += 0.1 if @min_value && limits[0] == @min_value
  diviser += 0.1 if @max_value && limits[3] == @max_value
  @bar_scale = (red_high - red_low) / diviser
  if @min_value && @min_value >= red_low
    @low_value = @min_value
  else
    @low_value = red_low - 0.1 * @bar_scale
  end
  if @max_value && @max_value <= red_high
    @high_value = @max_value
  else
    @high_value = red_high + 0.1 * @bar_scale
  end

  if @value.is_a?(Float) && (@value.infinite? || @value.nan?)
    if @value.infinite? == 1
      @line_pos = @bar_width + @y_pad
    else
      @line_pos = @y_pad
    end
  else
    @line_pos = @height - (@y_pad + (@value - @low_value) / @bar_scale * @bar_height).to_i
    if @line_pos < @y_pad
      @line_pos = @y_pad
    end
    if @line_pos > @y_pad + @bar_height
      @line_pos = @bar_height + @y_pad
    end
  end

  dc.addLineColor(@x_pad - 3, @line_pos, @x_pad + @bar_width + 3, @line_pos)

  # Draw triangle next to current value line
  top_triangle = Qt::Polygon.new(3)
  top_triangle.setPoint(0, @x_pad + @bar_width, @line_pos)
  top_triangle.setPoint(1, @x_pad + @bar_width + 5, @line_pos + 5)
  top_triangle.setPoint(2, @x_pad + @bar_width + 5, @line_pos - 5)
  dc.setBrush(Cosmos::BLACK)
  dc.drawPolygon(top_triangle)
  top_triangle.dispose

  # Additional drawing for subclasses
  additional_drawing(dc)
end