Class: Writexlsx::Sparkline

Inherits:
Object
  • Object
show all
Includes:
Utility
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

Utility::COL_MAX, Utility::ROW_MAX, Utility::SHEETNAME_MAX, Utility::STR_MAX

Instance Method Summary collapse

Methods included from Utility

#absolute_char, #check_dimensions, #check_dimensions_and_update_max_min_values, #check_parameter, #convert_date_time, #dash_types, delete_files, #fill_properties, #float_to_str, #layout_properties, #line_fill_properties, #line_properties, #palette_color, #pixels_to_points, #ptrue?, #put_deprecate_message, #r_id_attributes, #row_col_notation, #shape_style_base, #store_col_max_min_values, #store_row_max_min_values, #substitute_cellref, #underline_attributes, #v_shape_attributes_base, #v_shape_style_base, #value_or_raise, #write_anchor, #write_auto_fill, #write_color, #write_comment_path, #write_div, #write_fill, #write_font, #write_stroke, #write_xml_declaration, #xl_cell_to_rowcol, #xl_col_to_name, #xl_range, #xl_range_formula, #xl_rowcol_to_cell, #xml_str

Constructor Details

#initialize(ws, param, sheetname) ⇒ Sparkline

Returns a new instance of Sparkline.



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# File 'lib/write_xlsx/sparkline.rb', line 17

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

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

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

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

  # 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]
  if ptrue?(date_range) && !(date_range =~ /!/)
    date_range = "#{sheetname}!#{date_range}"
  end
  @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.
  [: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 107

def count
  @locations.size
end

#group_attributes ⇒ Object 



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# File 'lib/write_xlsx/sparkline.rb', line 111

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 164

def write_sparkline_group(writer)
  @writer = writer

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