Class: Writexlsx::Sparkline

Inherits:
Object
  • Object
show all
Includes:
Utility::Common
Defined in:
lib/write_xlsx/sparkline.rb

Overview

Sparkline - A class for handle Excel sparkline

Used in conjunction with WriteXLSX.

Copyright 2000-2012, John McNamara, [email protected] Converted to ruby by Hideo NAKAMURA, [email protected]

Constant Summary

Constants included from Utility::Common

Utility::Common::PERL_TRUE_VALUES

Instance Method Summary collapse

Methods included from Utility::Common

#absolute_char, #check_parameter, #float_to_str, #ptrue?, #put_deprecate_message

Constructor Details

#initialize(ws, param, sheetname) ⇒ Sparkline 



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# File 'lib/write_xlsx/sparkline.rb', line 19

def initialize(ws, param, sheetname)
  @color = {}

  # Check for valid input parameters.
  param.each_key do |k|
    raise "Unknown parameter '#{k}' in add_sparkline()" unless valid_sparkline_parameter[k]
  end
  i[location range].each do |required_key|
    raise "Parameter '#{required_key}' is required in add_sparkline()" unless param[required_key]
  end

  # Handle the sparkline type.
  type = param[:type] || 'line'
  raise "Parameter ':type' must be 'line', 'column' or 'win_loss' in add_sparkline()" unless %w[line column win_loss].include?(type)

  type  = 'stacked' if type == 'win_loss'
  @type = type

  # We handle single location/range values or array refs of values.
  @locations = [param[:location]].flatten
  @ranges    = [param[:range]].flatten

  raise "Must have the same number of location and range parameters in add_sparkline()" if @ranges.size != @locations.size

  # Cleanup the input ranges.
  @ranges.collect! do |range|
    # Remove the absolute reference $ symbols.
    range = range.gsub("$", '')
    # Convert a simple range into a full Sheet1!A1:D1 range.
    range = "#{sheetname}!#{range}" unless range =~ /!/
    range
  end
  # Cleanup the input locations.
  @locations.collect! { |location| location.gsub("$", '') }

  # Map options.
  @high      = param[:high_point]
  @low       = param[:low_point]
  @negative  = param[:negative_points]
  @first     = param[:first_point]
  @last      = param[:last_point]
  @markers   = param[:markers]
  @min       = param[:min]
  @max       = param[:max]
  @axis      = param[:axis]
  @reverse   = param[:reverse]
  @hidden    = param[:show_hidden]
  @weight    = param[:weight]

  # Map empty cells options.
  @empty = case param[:empty_cells] || ''
           when 'zero'
             0
           when 'connect'
             'span'
           else
             'gap'
           end

  # Map the date axis range.
  date_range = param[:date_axis]
  date_range = "#{sheetname}!#{date_range}" if ptrue?(date_range) && !(date_range =~ /!/)
  @date_axis = date_range

  # Set the sparkline styles.
  style = spark_styles[param[:style] || 0]

  @series_color   = style[:series]
  @negative_color = style[:negative]
  @markers_color  = style[:markers]
  @first_color    = style[:first]
  @last_color     = style[:last]
  @high_color     = style[:high]
  @low_color      = style[:low]

  # Override the style colours with user defined colors.
  i[series_color negative_color markers_color first_color last_color high_color low_color].each do |user_color|
    set_spark_color(user_color, ptrue?(param[user_color]) ? ws.palette_color(param[user_color]) : nil)
  end
end

Instance Method Details

#count ⇒ Object 



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# File 'lib/write_xlsx/sparkline.rb', line 100

def count
  @locations.size
end

#group_attributes ⇒ Object 



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# File 'lib/write_xlsx/sparkline.rb', line 104

def group_attributes
  cust_max = cust_max_min(@max) if @max
  cust_min = cust_max_min(@min) if @min

  a = []
  a << ['manualMax', @max] if @max && @max != 'group'
  a << ['manualMin', @min] if @min && @min != 'group'

  # Ignore the default type attribute (line).
  a << ['type',          @type]        if @type != 'line'

  a << ['lineWeight',    @weight]      if @weight
  a << ['dateAxis',      1]            if @date_axis
  a << ['displayEmptyCellsAs', @empty] if ptrue?(@empty)

  a << ['markers',       1]         if @markers
  a << ['high',          1]         if @high
  a << ['low',           1]         if @low
  a << ['first',         1]         if @first
  a << ['last',          1]         if @last
  a << ['negative',      1]         if @negative
  a << ['displayXAxis',  1]         if @axis
  a << ['displayHidden', 1]         if @hidden
  a << ['minAxisType',   cust_min]  if cust_min
  a << ['maxAxisType',   cust_max]  if cust_max
  a << ['rightToLeft',   1]         if @reverse
  a
end

#write_sparkline_group(writer) ⇒ Object

Write the x14:sparklineGroup element.

Example for order.

<x14:sparklineGroup manualMax="0" manualMin="0" lineWeight="2.25" type="column" dateAxis="1" displayEmptyCellsAs="span" markers="1" high="1" low="1" first="1" last="1" negative="1" displayXAxis="1" displayHidden="1" minAxisType="custom" maxAxisType="custom" rightToLeft="1">



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# File 'lib/write_xlsx/sparkline.rb', line 157

def write_sparkline_group(writer)
  @writer = writer

  @writer.tag_elements('x14:sparklineGroup', group_attributes) do
    write
  end
end