Support specifies the values in second plot for the bar/pie of pie chart

- Upgrade dependencies package golang.org/x/image to 0.5.0
- Update unit tests

chart.go

@@ -751,6 +751,7 @@ func parseChartOptions(opts *Chart) (*Chart, error) {
 // Set the position of the chart plot area by PlotArea. The properties that can
 // be set are:
 //
+//	SecondPlotValues
 //	ShowBubbleSize
 //	ShowCatName
 //	ShowLeaderLines
@@ -758,6 +759,9 @@ func parseChartOptions(opts *Chart) (*Chart, error) {
 //	ShowSerName
 //	ShowVal
 //
+// SecondPlotValues: Specifies the values in second plot for the 'pieOfPie' and
+// 'barOfPie' chart.
+//
 // ShowBubbleSize: Specifies the bubble size shall be shown in a data label. The
 // 'ShowBubbleSize' property is optional. The default value is false.
 //

chart_test.go

@@ -186,6 +186,7 @@ func TestAddChart(t *testing.T) {
 	}
 	legend := ChartLegend{Position: "left", ShowLegendKey: false}
 	plotArea := ChartPlotArea{
+		SecondPlotValues: 3,
 		ShowBubbleSize:   true,
 		ShowCatName:      true,
 		ShowLeaderLines:  false,

drawing.go

@@ -602,6 +602,10 @@ func (f *File) drawPie3DChart(opts *Chart) *cPlotArea {
 // drawPieOfPieChart provides a function to draw the c:plotArea element for
 // pie chart by given format sets.
 func (f *File) drawPieOfPieChart(opts *Chart) *cPlotArea {
+	var splitPos *attrValInt
+	if opts.PlotArea.SecondPlotValues > 0 {
+		splitPos = &attrValInt{Val: intPtr(opts.PlotArea.SecondPlotValues)}
+	}
 	return &cPlotArea{
 		OfPieChart: &cCharts{
 			OfPieType: &attrValString{
@@ -611,6 +615,7 @@ func (f *File) drawPieOfPieChart(opts *Chart) *cPlotArea {
 				Val: opts.VaryColors,
 			},
 			Ser:      f.drawChartSeries(opts),
+			SplitPos: splitPos,
 			SerLines: &attrValString{},
 		},
 	}
@@ -619,6 +624,10 @@ func (f *File) drawPieOfPieChart(opts *Chart) *cPlotArea {
 // drawBarOfPieChart provides a function to draw the c:plotArea element for
 // pie chart by given format sets.
 func (f *File) drawBarOfPieChart(opts *Chart) *cPlotArea {
+	var splitPos *attrValInt
+	if opts.PlotArea.SecondPlotValues > 0 {
+		splitPos = &attrValInt{Val: intPtr(opts.PlotArea.SecondPlotValues)}
+	}
 	return &cPlotArea{
 		OfPieChart: &cCharts{
 			OfPieType: &attrValString{
@@ -627,6 +636,7 @@ func (f *File) drawBarOfPieChart(opts *Chart) *cPlotArea {
 			VaryColors: &attrValBool{
 				Val: opts.VaryColors,
 			},
+			SplitPos: splitPos,
 			Ser:      f.drawChartSeries(opts),
 			SerLines: &attrValString{},
 		},

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/xuri/efp v0.0.0-20220603152613-6918739fd470
 	github.com/xuri/nfp v0.0.0-20220409054826-5e722a1d9e22
 	golang.org/x/crypto v0.5.0
-	golang.org/x/image v0.0.0-20220902085622-e7cb96979f69
+	golang.org/x/image v0.5.0
 	golang.org/x/net v0.7.0
 	golang.org/x/text v0.7.0
 )

go.sum

@@ -24,8 +24,8 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE=
 golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU=
-golang.org/x/image v0.0.0-20220902085622-e7cb96979f69 h1:Lj6HJGCSn5AjxRAH2+r35Mir4icalbqku+CLUtjnvXY=
+golang.org/x/image v0.5.0 h1:5JMiNunQeQw++mMOz48/ISeNu3Iweh/JaZU8ZLqHRrI=
-golang.org/x/image v0.0.0-20220902085622-e7cb96979f69/go.mod h1:doUCurBvlfPMKfmIpRIywoHmhN3VyhnoFDbvIEWF4hY=
+golang.org/x/image v0.5.0/go.mod h1:FVC7BI/5Ym8R25iw5OLsgshdUBbT1h5jZTpA+mvAdZ4=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=

xmlChart.go

@@ -333,6 +333,7 @@ type cCharts struct {
 	VaryColors   *attrValBool   `xml:"varyColors"`
 	Wireframe    *attrValBool   `xml:"wireframe"`
 	Ser          *[]cSer        `xml:"ser"`
+	SplitPos     *attrValInt    `xml:"splitPos"`
 	SerLines     *attrValString `xml:"serLines"`
 	DLbls        *cDLbls        `xml:"dLbls"`
 	Shape        *attrValString `xml:"shape"`
@@ -540,6 +541,7 @@ type ChartDimension struct {
 
 // ChartPlotArea directly maps the format settings of the plot area.
 type ChartPlotArea struct {
+	SecondPlotValues int
 	ShowBubbleSize   bool
 	ShowCatName      bool
 	ShowLeaderLines  bool