Class: CTioga::CurveLegend

Inherits:
LegendItem show all
Defined in:
lib/CTioga/legends/item.rb

Overview

The class handling the drawing of one Curve

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from LegendItem

#get_baseline_y, #legend_name

Methods included from Log

#identify, #init_logger, #logger, #logger_options, #spawn

Methods included from Debug

#debug_figmaker, #debug_patterns, #debug_puts, #figmaker_options, #test_pattern, #test_pattern_right

Constructor Details

#initialize(style) ⇒ CurveLegend

Returns a new instance of CurveLegend.



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# File 'lib/CTioga/legends/item.rb', line 110

def initialize(style)
  super()
  @curve_style = style
end

Instance Attribute Details

#curve_style ⇒ Object

Returns the value of attribute curve_style.



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# File 'lib/CTioga/legends/item.rb', line 108

def curve_style
  @curve_style
end

Instance Method Details

#draw(t, legend_style, x, y) ⇒ Object

Draw one single text line



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# File 'lib/CTioga/legends/item.rb', line 116

def draw(t, legend_style, x, y)
  y = get_baseline_y(t, legend_style, y) 
  t.context do 
    # Position specification for the legend pictogram
    margin_specs = { 'left' => x,
      'right' => 1 - x - legend_style.picto_width.to_figure(t, :x),
      'bottom' => y,
      'top' => 1 - y - legend_style.picto_height.to_figure(t, :y)
    }
    debug "Legend margins for '#{@curve_style.legend}' : #{margin_specs.inspect}"
    t.subfigure(margin_specs) do
      # We scale the text back to normal so the markers have the right
      # size
      # t.line_width = 0.1
      # t.stroke_rect(0,0,1,1)
      t.rescale_text(1/legend_style.text_scale)
      @curve_style.output_legend_pictogram(t)
    end
  end
  t.show_text('x' => x + 
              legend_style.picto_width.to_figure(t, :x) + 
              legend_style.picto_to_text.to_figure(t, :x), 
              'y' => y, 'text' => @curve_style.legend,
              'measure' => legend_name,
              'justification' => LEFT_JUSTIFIED)
end

#size(t, legend_style) ⇒ Object

Computes the size of the line. Height should always be accurate, but width can be 0 sometimes…



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# File 'lib/CTioga/legends/item.rb', line 145

def size(t, legend_style)
  height = legend_style.dy.to_figure(t, :y)

  width = legend_style.picto_width.to_figure(t, :x) + 
    legend_style.picto_to_text.to_figure(t, :x) 

  info = t.get_text_size(legend_name)
  
  if info.key? 'width'
    width += t.convert_output_to_figure_dx(10*info['width'])
  end

  return [ width, height ]
end