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lib/ctioga2/graphics/styles/plot.rb

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# This module contains all the classes used by ctioga

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module CTioga2

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  Version::register_svn_info('$Revision: 202 $', '$Date: 2010-11-30 22:21:17 +0100 (Tue, 30 Nov 2010) $')

 

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  Version::register_svn_info('$Revision: 370 $', '$Date: 2012-12-28 17:40:18 +0100 (Fri, 28 Dec 2012) $')

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  module Graphics

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      # * ticks

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      # * background (uniform fill + watermark if applicable + possibly

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      #   a picture .?)

 

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      #

 

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      # This class is way too complex and needs too much flexibility

 

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      # to be handled by a subclass of BasicStyle. However, all

 

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      # substyles should be.

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      class PlotStyle

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        include Tioga::FigureConstants

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        attr_accessor :plot_margin

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        # Coordinate tranforms

 

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        #

 

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        # @todo they should be axis-specific.

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        attr_accessor :transforms

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        # Style of the background of the plot

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        def initialize

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          # Default style for the plots.

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          @axes = {}

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          @axes[:left] = AxisStyle.new(:left, 

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                                       AXIS_WITH_TICKS_AND_NUMERIC_LABELS,

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                                       '$y$')

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          @axes[:bottom] = AxisStyle.new(:bottom, 

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                                         AXIS_WITH_TICKS_AND_NUMERIC_LABELS,

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                                         '$x$')

 

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          @axes[:left] = 

 

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            StyleSheet.style_for(AxisStyle, 'left', :left, 

 

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                                 AXIS_WITH_TICKS_AND_NUMERIC_LABELS,

 

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                                 '$y$')

 

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          @axes[:bottom] = 

 

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            StyleSheet.style_for(AxisStyle, 'bottom', :bottom, 

 

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                                 AXIS_WITH_TICKS_AND_NUMERIC_LABELS,

 

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                                 '$x$')

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          @axes[:right] = AxisStyle.new(:right, AXIS_WITH_TICKS_ONLY)

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          @axes[:top] = AxisStyle.new(:top, AXIS_WITH_TICKS_ONLY)

 

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          @axes[:right] = 

 

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            StyleSheet.style_for(AxisStyle, 'right', :right, 

 

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                                 AXIS_WITH_TICKS_ONLY)

 

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          @axes[:top] = 

 

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            StyleSheet.style_for(AxisStyle, 'top', :top, 

 

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                                 AXIS_WITH_TICKS_ONLY)

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          @xaxis_location = :bottom

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          @yaxis_location = :left

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          @title = TextLabel.new

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          @title.loc = Types::PlotLocation.new(:top)

 

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          @title = 

 

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            StyleSheet.style_for(TextLabel, 'title',

 

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                                 nil, 

 

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                                 Types::PlotLocation.new(:top))

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          @plot_margin = nil

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          @transforms = CoordinateTransforms.new

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          @background = BackgroundStyle.new

 

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          @background = 

 

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            StyleSheet.style_for(BackgroundStyle, 'background')

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          # A padding of 4bp ? Why ?? Why not ?

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          @padding = Types::Dimension.new(:bp, 4)

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        end

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        # Apply (destructively) the current transformations to the

 

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        # given dataset

 

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        def apply_transforms!(dataset)

 

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          @transforms.transform_2d!(dataset)

 

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        end

 

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        # Whether to use log scale for the given axis.

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        #

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        # Now the question is: how should that affect user-defined

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                axis.draw_axis(t)

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              rescue Exception => e

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                error { "Impossible to draw axis #{which}: #{e.message}" }

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                debug { "Full message: #{e.inspect}" }

 

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                debug { "Full message: #{e.inspect}\n#{e.backtrace.join("\n")}" }

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              end

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            end

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          end

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                               "Axes and labels", "Axes and labels", 40)

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      AxisTypeCommands = []

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      [:left, :right, :top, :bottom].each do |loc|

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        AxisTypeCommands << 

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          Cmd.new("#{loc}",nil,"--#{loc}", 

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                  [

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                   CmdArg.new('axis-decoration'),

 

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                   AxisStyleOptions['decoration'],

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                  ], PartialAxisStyle) do |plotmaker, dec, opts|

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          style = AxisStyle.current_axis_style(plotmaker, loc)

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          style.decoration = dec

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          describe("Sets the type of the #{loc} axis", 

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                   <<"EOH", AxisGroup)

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Sets the type of the #{loc} axis.

 

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The options have the same meaning as for {command: define-axis-style},

 

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see that command for more information.

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EOH

 

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      end

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      AxisStyleCommand = 

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          Cmd.new("axis-style",nil,"--axis-style", 

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                  [

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                   CmdArg.new('axis'),

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                  ], FullAxisStyle) do |plotmaker, which, opts|

 

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                  ], AxisStyleOptions) do |plotmaker, which, opts|

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        style = AxisStyle.current_axis_style(plotmaker, which)

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        style.set_from_hash(opts)

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      end

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        describe("Sets the style of the given axis", 

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                 <<"EOH", AxisGroup)

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This command can be used to set various aspects of the style of the 

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given axis, through its various options:

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 * decoration

 

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given axis, through its various options, which are documented in more details 

 

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in the {command: define-axis-style} command.

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EOH

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      BackgroundLinesCommand = 

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                [

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                 CmdArg.new('axis'), 

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                 CmdArg.new('color-or-false')

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                ],{

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                  'style' => CmdArg.new('line-style'),

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                  'width' => CmdArg.new('float')

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                }) do |plotmaker, which, color, options|

 

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                ],

 

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                StrokeStyle.options_hash().without('color')

 

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                ) do |plotmaker, which, color, options|

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        axis = AxisStyle.current_axis_style(plotmaker, which)

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        if color

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          style = {'color' => color}

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      %w{x y}.each do |axis|

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        labelcmd = Cmd.new("#{axis}label", "-#{axis}", 

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                            "--#{axis}label", [ CmdArg.new('text') ],

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                            FullTextStyleOptions) do |plotmaker, label, options|

 

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                            TextLabel.options_hash().without('text')

 

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                           ) do |plotmaker, label, options|

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          PlotStyle.current_plot_style(plotmaker).

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            set_label_style("#{axis}_label", options, label)

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        end

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                          <<"EOH", AxisGroup)

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Sets the #{axis.upcase} label of the current plot.

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EOH

 

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        Commands::make_alias_for_option "#{axis}label", 'alignment', 'align', true

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        nolabelcmd = Cmd.new("no-#{axis}label", nil, 

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                             "--no-#{axis}label", []) do |plotmaker|

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      end

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      TitleLabelCommand = 

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        Cmd.new('title', '-t', '--title', [ CmdArg.new('text') ],

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                FullTextStyleOptions) do |plotmaker, label, options|

 

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        Cmd.new('title', '-t', '--title', 

 

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                [ CmdArg.new('text') ],

 

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                TextLabel.options_hash().without('text')

 

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                ) do |plotmaker, label, options|

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        PlotStyle.current_plot_style(plotmaker).

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          set_label_style('title', options, label)

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      end

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Sets the title of the current plot.

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EOH

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      Commands::make_alias_for_option 'title', 'alignment', 'align', true

 

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      NoTitleLabelCommand = 

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        Cmd.new('no-title', nil, '--no-title', []) do |plotmaker|

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        PlotStyle.current_plot_style(plotmaker).

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        PlotStyle.current_plot_style(plotmaker).

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          set_label_style(which, options)

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      end

 

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      Commands::make_alias_for_option 'label-style', 'alignment', 'align', true

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      LabelStyleCommand.describe("Sets the style of the given label", 

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                                 <<"EOH", AxisGroup)

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greater.

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EOH

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    end

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  end

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end

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