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module Axlsx
# A graphic frame defines a container for a chart object
# @note The recommended way to manage charts is Worksheet#add_chart
# @see Worksheet#add_chart
class GraphicFrame
# A reference to the chart object associated with this frame
# @return [Chart]
attr_reader :chart
# A anchor that holds this frame
# @return [TwoCellAnchor]
attr_reader :anchor
# Creates a new GraphicFrame object
# @param [TwoCellAnchor] anchor
# @param [Class] chart_type
def initialize(anchor, chart_type, options)
DataTypeValidator.validate "Drawing.chart_type", Chart, chart_type
@anchor = anchor
@chart = chart_type.new(self, options)
end
# The relationship id for this graphic
# @return [String]
def rId
"rId#{@anchor.index+1}"
end
# Serializes the graphic frame
# @param [Nokogiri::XML::Builder] xml The document builder instance this objects xml will be added to.
# @return [String]
def to_xml(xml)
xml.send('xdr:graphicFrame') {
xml.send('xdr:nvGraphicFramePr') {
xml.send('xdr:cNvPr', :id=>2, :name=>chart.title)
xml.send('xdr:cNvGraphicFramePr')
}
xml.send('xdr:xfrm') {
xml.send('a:off', :x=>0, :y=>0)
xml.send('a:ext', :cx=>0, :cy=>0)
}
xml.send('a:graphic') {
xml.send('a:graphicData', :uri=>XML_NS_C) {
xml.send('c:chart', :'xmlns:c'=>XML_NS_C, :'xmlns:r'=>XML_NS_R, :'r:id'=>rId)
}
}
}
end
end
end
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