Class: Cosmos::LimitsWidget

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

Overview

This class is a common base class for LimitsbarWidget and LimitscolumnWidget and should not be instantiated

Direct Known Subclasses

LimitsbarWidget, LimitscolumnWidget

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 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, width, height) ⇒ LimitsWidget

Returns a new instance of LimitsWidget.



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limits_widget.rb', line 21

def initialize(parent_layout, target_name, packet_name, item_name, value_type, width, height)
  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

Instance Method Details

#calculate_widths(limits, length) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limits_widget.rb', line 66

def calculate_widths(limits, length)
  red_low = limits[0]
  yellow_low = limits[1]
  yellow_high = limits[2]
  red_high = limits[3]
  green_low = limits[4]
  green_high = limits[5]

  widths = OpenStruct.new
  # Calculate sizes of limits sections
  widths.red_low  = (0.1 * length).round
  widths.red_high = (0.1 * length).round

  inner_value_range = red_high - red_low

  widths.yellow_low  = ((yellow_low - red_low)   / inner_value_range * 0.8 * length).round
  widths.yellow_high = ((red_high - yellow_high) / inner_value_range * 0.8 * length).round

  if green_high
    widths.green_low  = ((green_low - yellow_low)   / inner_value_range * 0.8 * length).round
    widths.green_high = ((yellow_high - green_high) / inner_value_range * 0.8 * length).round
    widths.blue = length - widths.red_low - widths.yellow_low - widths.green_low -
      widths.green_high - widths.yellow_high - widths.red_high
  else
    widths.green = length - widths.red_low - widths.yellow_low -
      widths.yellow_high - widths.red_high
  end
  widths
end

#get_limits ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limits_widget.rb', line 56

def get_limits
  limits = nil
  limits_values = @item.limits.values
  if limits_values
    limits = limits_values[@limits_set]
    limits = limits_values[:DEFAULT] unless limits
  end
  limits
end

#paintEvent(event) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limits_widget.rb', line 41

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/limits_widget.rb', line 36

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