Add model properties for optional underflow and overflow bins on
histogram chart types, and expose them through the HistogramDiagram
wrapper.
Pass the new settings through the existing histogram pipeline:
HistogramChartType snapshots the properties, HistogramDataSequence keeps
that snapshot, and HistogramCalculator creates optional edge bins around
the normal bin range.
Generated category labels now distinguish special bins from normal ranges,
e.g. "<= 11", "(11-13]", and "> 14".
Add a model-level test that sets fixed bin width together with underflow
and overflow bins, then verifies that the generated bin labels are rebuilt
correctly.
Signed-off-by: Devansh Varshney <varshney.devansh614@gmail.com>
Change-Id: I65eac9607daa4f4be6320304c9e9682549f479a6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/207151
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
Tested-by: Jenkins
Devansh Varshney
09823632bd