File Coverage

blib/lib/Spreadsheet/WriteExcel/Chart/Scatter.pm

Criterion	Covered	Total	%
statement	25	40	62.5
branch			n/a
condition			n/a
subroutine	5	7	71.4
pod	0	1	0.0
total	30	48	62.5

package Spreadsheet::WriteExcel::Chart::Scatter;

###############################################################################
#
# Scatter - A writer class for Excel Scatter charts.
#
# Used in conjunction with Spreadsheet::WriteExcel::Chart.
#
# See formatting note in Spreadsheet::WriteExcel::Chart.
#
# Copyright 2000-2010, John McNamara, [e-mail]
#
# Documentation after __END__
#

require Exporter;

use strict;
use Spreadsheet::WriteExcel::Chart;


use vars qw($VERSION @ISA);
@ISA = qw(Spreadsheet::WriteExcel::Chart Exporter);

$VERSION = '2.40';

###############################################################################
#
# new()
#
#
sub new {

    my $class = shift;
    my $self  = Spreadsheet::WriteExcel::Chart->new( @_ );

    bless $self, $class;
    return $self;
}


###############################################################################
#
# _store_chart_type()
#
# Implementation of the abstract method from the specific chart class.
#
# Write the SCATTER chart BIFF record. Defines a scatter chart type.
#
sub _store_chart_type {

    my $self = shift;

    my $record       = 0x101B;    # Record identifier.
    my $length       = 0x0006;    # Number of bytes to follow.
    my $bubble_ratio = 0x0064;    # Bubble ratio.
    my $bubble_type  = 0x0001;    # Bubble type.
    my $grbit        = 0x0000;    # Option flags.

    my $header = pack 'vv', $record, $length;
    my $data = '';
    $data .= pack 'v', $bubble_ratio;
    $data .= pack 'v', $bubble_type;
    $data .= pack 'v', $grbit;

    $self->_append( $header, $data );
}


###############################################################################
#
# _store_axis_category_stream(). Overridden.
#
# Write the AXIS chart substream for the chart category.
#
# For a Scatter chart the category stream is replace with a values stream. We
# override this method and turn it into a values stream.
#
sub _store_axis_category_stream {

    my $self = shift;

    $self->_store_axis( 0 );

    $self->_store_begin();
    $self->_store_valuerange();
    $self->_store_tick();
    $self->_store_end();
}


###############################################################################
#
# _store_marker_dataformat_stream(). Overridden.
#
# This is an implementation of the parent abstract method  to define
# properties of markers, linetypes, pie formats and other.
#
sub _store_marker_dataformat_stream {

    my $self = shift;

    $self->_store_dataformat( 0x0000, 0xFFFD, 0x0000 );

    $self->_store_begin();
    $self->_store_3dbarshape();
    $self->_store_lineformat( 0x00000000, 0x0005, 0xFFFF, 0x0008, 0x004D );
    $self->_store_areaformat( 0x00FFFFFF, 0x0000, 0x01, 0x01, 0x4E, 0x4D );
    $self->_store_pieformat();
    $self->_store_markerformat( 0x00, 0x00, 0x02, 0x01, 0x4D, 0x4D, 0x3C );
    $self->_store_end();

}


1;


__END__