Class: Cosmos::LinegraphPlotGuiObject

Inherits:
LineGraph show all
Defined in:
lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb

Overview

Represents the entire line graph plot in the graphing system. This class extends LineGraph by implementing callbacks and the update methods which are called by higher level classes.

Direct Known Subclasses

XyPlotGuiObject

Constant Summary collapse

SELECTED_FRAME_COLOR =

Color of a linegraph frame when selected

'lightgreen'

Constants inherited from LineGraph

Cosmos::LineGraph::DOUBLE_CLICK_SECONDS, Cosmos::LineGraph::FRAME_OFFSET, Cosmos::LineGraph::GRAPH_SPACER, Cosmos::LineGraph::LABEL_TICK_SIZE, Cosmos::LineGraph::LEFT_X_LABEL_WIDTH_ADJUST

Instance Attribute Summary

Attributes inherited from LineGraph

#draw_cursor_line_callback, #horizontal_lines, #left_y_max, #left_y_min, #mouse_leave_callback, #mouse_left_button_press_callback, #post_error_callback, #pre_error_callback, #right_y_max, #right_y_min, #x_max, #x_max_label, #x_min, #x_min_label

Instance Method Summary collapse

Methods inherited from LineGraph

#add_horizontal_line, #add_line, #add_popups_for_lines, #adjust_popup_positions, attr_accessor_with_redraw, #auto_scale_x, #auto_scale_y, #auto_scale_y_axis, #build_popups_from_x_value, #build_x_grid_lines, #build_y_grid_lines, #calculate_base, #calculate_scaling_factors, #calculate_x_grid_lines, #calculate_y_grid_lines, #calculate_y_labels, #clear_horizontal_lines, #clear_lines, #convert_x_value_to_text, #convert_y_value_to_text, #determine_graph_size, #draw_cursor_line_and_popups, #draw_cursor_line_and_popups_at_x, #draw_error_icon, #draw_frame, #draw_graph_background, #draw_graph_into_back_buffer, #draw_graph_to_screen, #draw_horizontal_lines, #draw_legend, #draw_legend_text, #draw_line, #draw_lines, #draw_origin_lines, #draw_popups, #draw_title, #draw_x_axis_grid_lines, #draw_x_axis_title, #draw_x_label, #draw_y_axis_grid_lines, #draw_y_axis_title, #draw_y_label, #get_legend_position, #graph, #leaveEvent, #manual_scale_x, #manual_scale_y, #mouseMoveEvent, #mousePressEvent, #mouseReleaseEvent, #paintEvent, #remote_draw_cursor_line_at_x, #resizeEvent, #scale_graph, #scale_graph_to_value_x, #scale_left_to_right_y, #scale_value_to_graph_x, #scale_value_to_graph_y, #update_graph_size

Constructor Details

#initialize(parent, tab, plot, tabbed_plots) ⇒ LinegraphPlotGuiObject

Returns a new instance of LinegraphPlotGuiObject.



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 25

def initialize(parent, tab, plot, tabbed_plots)
  # Add new line graph
  super(parent)
  @plot = plot
  @paused = nil

  update()

  # Setup callbacks for multi-graph mouse-overs
  self.draw_cursor_line_callback = lambda do |calling_line_graph, x, left_button_pressed|
    tab.plots.each do |current_plot|
      current_plot.gui_object.remote_draw_cursor_line_at_x(x, left_button_pressed) if current_plot.gui_object != calling_line_graph and current_plot.gui_object.respond_to? :remote_draw_cursor_line_at_x
    end
  end
  self.mouse_leave_callback = lambda do |calling_line_graph|
    tab.plots.each do |current_plot|
      current_plot.gui_object.remote_draw_cursor_line_at_x(nil, false) if current_plot.gui_object != calling_line_graph and current_plot.gui_object.respond_to? :remote_draw_cursor_line_at_x
    end
  end

  # Setup callbacks for viewing errors
  self.pre_error_callback = lambda do |calling_line_graph|
    @paused = tabbed_plots.paused?
    tabbed_plots.pause
  end
  self.post_error_callback = lambda do |calling_line_graph|
    tabbed_plots.resume unless @paused
  end
  show()
end

Instance Method Details

#redraw ⇒ Object

Redraws the line graph



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 167

def redraw
  self.graph
end

#select ⇒ Object

Selects the plot



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 149

def select
  if self.frame_color != SELECTED_FRAME_COLOR
    self.frame_color = SELECTED_FRAME_COLOR
    self.frame_size = 3
    redraw()
  end
end

#selected? ⇒ Boolean

Indicates if the plot is selected

Returns:

  • (Boolean) 


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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 144

def selected?
  self.frame_color == SELECTED_FRAME_COLOR
end

#unselect ⇒ Object

Unselects plot



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 158

def unselect
  if self.frame_color == SELECTED_FRAME_COLOR
    self.frame_color = 'black'
    self.frame_size = 0
    redraw()
  end
end

#update(redraw_needed = false) ⇒ Object

Update the GraphView object properties



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 57

def update(redraw_needed = false)
  self.title = @plot.title
  self.x_axis_title = @plot.x_axis_title
  self.left_y_axis_title = @plot.left_y_axis_title
  self.right_y_axis_title = @plot.right_y_axis_title
  self.show_x_grid_lines = @plot.show_x_grid_lines
  self.show_y_grid_lines = @plot.show_y_grid_lines
  self.point_size = @plot.point_size
  self.show_lines = @plot.show_lines
  self.show_legend = @plot.show_legend
  if @plot.manual_left_y_scale
    self.manual_scale_y(*(@plot.manual_left_y_scale))
  else
    self.auto_scale_y(:LEFT)
  end
  if @plot.manual_right_y_scale
    self.manual_scale_y(*(@plot.manual_right_y_scale))
  else
    self.auto_scale_y(:RIGHT)
  end
  self.manual_x_grid_line_scale = @plot.manual_x_grid_line_scale
  self.manual_y_grid_line_scale = @plot.manual_y_grid_line_scale
  self.unix_epoch_x_values = @plot.unix_epoch_x_values
  self.utc_time = @plot.utc_time

  # Update horizontal lines
  self.clear_horizontal_lines
  @plot.data_objects.each do |data_object|
    if data_object.kind_of? LinegraphDataObject
      axis = data_object.y_axis
      data_object.horizontal_lines.each do |y_value, color|
        self.add_horizontal_line(y_value, color, axis)
      end
      if data_object.kind_of?(HousekeepingDataObject) && data_object.show_limits_lines
        axis = data_object.y_axis
        data_object.limits_lines.each do |y_value, color|
          self.add_horizontal_line(y_value, color, axis)
        end
      end
    end
  end

  redraw() if redraw_needed
end

#update_overview(points_plotted, overview_graph) ⇒ Object

Update the overview graph associated with the line graph



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 103

def update_overview(points_plotted, overview_graph)
  @plot.data_objects.each do |data_object|
    begin
      overview_graph.add_line(data_object.name, data_object.y_values, data_object.x_values, nil, nil, nil, nil, data_object.color, :LEFT, points_plotted) unless data_object.y_values.empty?
    rescue Exception => error
      # Ignore errors in overview graph
      raise error if error.class == NoMemoryError
    end
  end
end

#update_plot(points_plotted, min_x_value, max_x_value) ⇒ Object

Update the GraphView lines



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# File 'lib/cosmos/tools/tlm_grapher/plot_gui_objects/linegraph_plot_gui_object.rb', line 115

def update_plot(points_plotted, min_x_value, max_x_value)
  self.clear_lines
  self.manual_scale_x(min_x_value, max_x_value, false)
  @plot.data_objects.each do |data_object|
    unless data_object.x_values.empty?
      begin
        raise "GraphView x data must be Numeric" unless data_object.x_values[0].kind_of?(Numeric)
        range = data_object.x_values.range_within(min_x_value, max_x_value)
        x_values = data_object.x_values[range]
        if x_values[0] and x_values[0] >= min_x_value and x_values[0] <= max_x_value
          y_values = data_object.y_values[range]
          formatted_x_values = nil
          formatted_x_values = data_object.formatted_x_values[range] unless data_object.formatted_x_values.empty?
          self.add_line(data_object.name, y_values, x_values, nil, formatted_x_values, data_object.y_states, data_object.x_states, data_object.color, data_object.y_axis, points_plotted) unless y_values.empty?
        end
      rescue Exception => error
        raise error if error.class == NoMemoryError
        self.error = error unless self.error
      end
    end
    if data_object.error
      self.error = data_object.error
      data_object.error = nil
    end
  end
  @plot.redraw_needed = false
end