Class: CTioga2::Graphics::Legends::CurveLegend

Inherits:
LegendItem
  • Object
show all
Includes:
Log
Defined in:
lib/ctioga2/graphics/legends/items.rb

Overview

The legend of a curve object, or rather, the legend corresponding to a given

todo finish to adapt: use FullTextStyle to draw the objects.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Log

context, counts, debug, error, fatal, #format_exception, #identify, info, init_logger, log_to, logger, set_level, #spawn, warn

Constructor Details

#initialize(style) ⇒ CurveLegend

Returns a new instance of CurveLegend.



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# File 'lib/ctioga2/graphics/legends/items.rb', line 137

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/ctioga2/graphics/legends/items.rb', line 135

def curve_style
  @curve_style
end

Instance Method Details

#draw(t, legend_style, x, y) ⇒ Object

Draw one single text line

todo adapt here !

todo x and y are not taken into account the way they should be.



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# File 'lib/ctioga2/graphics/legends/items.rb', line 147

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),
      'bottom' => y,
      'top' => 1 - y - legend_style.picto_height.to_figure(t)
    }
    debug { "Legend margins for '#{@curve_style.legend}' : #{margin_specs.inspect}" }
    t.subfigure(margin_specs) do
      # We make the markers slightly smaller than the text
      # around.
      t.rescale_text(0.8 * legend_style.symbol_scale)
      @curve_style.draw_legend_pictogram(t)
    end
  end
  t.show_text('x' => x + 
              legend_style.picto_width.to_figure(t) + 
              legend_style.picto_to_text.to_figure(t), 
              'y' => y, 'text' => @curve_style.legend,
              'measure' => legend_name,
              'justification' => Tioga::FigureConstants::LEFT_JUSTIFIED,
              'alignment' => Tioga::FigureConstants::ALIGNED_AT_BASELINE)
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/ctioga2/graphics/legends/items.rb', line 175

def size(t, legend_style)
  width, height = text_size(t, legend_style)
  width += legend_style.picto_width.to_figure(t) + 
    legend_style.picto_to_text.to_figure(t) 
  lh = Types::Dimension.new(:dy, 1, :y).to_figure(t,:y)
  if lh > height
    height = lh
  end
    
  return [ width, height ]
end