Class: Cosmos::LimitscolorWidget

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

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, radius = 10, use_full_item_name = false) ⇒ LimitscolorWidget

Returns a new instance of LimitscolorWidget.



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

def initialize(parent_layout, target_name, packet_name, item_name, value_type = :CONVERTED, radius = 10, use_full_item_name = false)
  super(target_name, packet_name, item_name, value_type)
  @value_type = :CONVERTED if @value_type == :WITH_UNITS
  use_full_item_name = ConfigParser::handle_true_false(use_full_item_name)
  @painter = nil
  @foreground = Cosmos::BLACK
  parent_layout.addWidget(self) if parent_layout
  @font = font()
  metrics = Cosmos.getFontMetrics(@font)
  if use_full_item_name
    @item_text = "#{@target_name} #{@packet_name} #{@item_name}"
  else
    @item_text = @item_name
  end
  text_width = metrics.width(@item_text)
  @radius = radius.to_i
  @diameter = @radius * 2
  @text_height = @font.pointSize
  @left_offset = @diameter + 5
  if @text_height > @diameter
    @text_baseline = @text_height
    setFixedSize(text_width + @left_offset, @text_height + 2)
  else
    @text_baseline = @text_height + ((@diameter - @text_height) / 2)
    setFixedSize(text_width + @left_offset, @diameter + 2)
  end
end

Class Method Details

.takes_value? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitscolor_widget.rb', line 46

def self.takes_value?
  return true
end

Instance Method Details

#paint_implementation(dc) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitscolor_widget.rb', line 85

def paint_implementation(dc)
  dc.setBrush(Cosmos.getBrush(@foreground))
  dc.drawEllipse(0, 0, @diameter, @diameter)
  dc.setBrush(Cosmos.getBrush(Cosmos::BLACK))
  dc.drawText(@left_offset, @text_baseline, @item_text)

  #Additional drawing for subclasses
  additional_drawing(dc)
end

#paintEvent(event) ⇒ Object 



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# File 'lib/cosmos/tools/tlm_viewer/widgets/limitscolor_widget.rb', line 69

def paintEvent(event)
  begin
    super(event)
    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/limitscolor_widget.rb', line 50

def value=(data)
  super(data)
  case @limits_state
  when :RED, :RED_HIGH, :RED_LOW
    @foreground = 'red'
  when :YELLOW, :YELLOW_HIGH, :YELLOW_LOW
    @foreground = 'yellow'
  when :GREEN, :GREEN_HIGH, :GREEN_LOW
    @foreground = 'lime'
  when :BLUE
    @foreground = 'dodgerblue'
  when :STALE
    @foreground = Cosmos::PURPLE
  else
    @foreground = Cosmos::BLACK
  end
  update()
end