This closes #1474, support set the format for the data series fill (solid fill)

- Breaking changes: remove the `Color` field in the `ChartLine` structure
- This support set the bubble size in a data series
- Unit test update and correct the docs of the function `GetSheetDimension`

chart.go

@@ -657,7 +657,9 @@ func parseChartOptions(opts *Chart) (*Chart, error) {
 //
 //	Name
 //	Categories
+//	Sizes
 //	Values
+//	Fill
 //	Line
 //	Marker
 //
@@ -670,16 +672,18 @@ func parseChartOptions(opts *Chart) (*Chart, error) {
 // the same as the X axis. In most chart types the 'Categories' property is
 // optional and the chart will just assume a sequential series from 1..n.
 //
+// Sizes: This sets the bubble size in a data series.
+//
 // Values: This is the most important property of a series and is the only
 // mandatory option for every chart object. This option links the chart with
 // the worksheet data that it displays.
 //
+// Fill: This set the format for the data series fill.
+//
 // Line: This sets the line format of the line chart. The 'Line' property is
 // optional and if it isn't supplied it will default style. The options that
 // can be set are width and color. The range of width is 0.25pt - 999pt. If the
 // value of width is outside the range, the default width of the line is 2pt.
-// The value for color should be represented in hex format
-// (e.g., #000000 - #FFFFFF)
 //
 // Marker: This sets the marker of the line chart and scatter chart. The range
 // of optional field 'Size' is 2-72 (default value is 5). The enumeration value

chart_test.go

@@ -153,7 +153,9 @@ func TestAddChart(t *testing.T) {
 		{Name: "Sheet1!$A$37", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$37:$D$37"},
 	}
 	series2 := []ChartSeries{
-		{Name: "Sheet1!$A$30", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$30:$D$30", Marker: ChartMarker{Symbol: "none", Size: 10}, Line: ChartLine{Color: "#000000"}},
+		{Name: "Sheet1!$A$30", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$30:$D$30",
+			Fill:   Fill{Type: "pattern", Color: []string{"000000"}, Pattern: 1},
+			Marker: ChartMarker{Symbol: "none", Size: 10}},
 		{Name: "Sheet1!$A$31", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$31:$D$31"},
 		{Name: "Sheet1!$A$32", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$32:$D$32"},
 		{Name: "Sheet1!$A$33", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$33:$D$33"},
@@ -163,6 +165,16 @@ func TestAddChart(t *testing.T) {
 		{Name: "Sheet1!$A$37", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$37:$D$37", Line: ChartLine{Width: 0.25}},
 	}
 	series3 := []ChartSeries{{Name: "Sheet1!$A$30", Categories: "Sheet1!$A$30:$D$37", Values: "Sheet1!$B$30:$B$37"}}
+	series4 := []ChartSeries{
+		{Name: "Sheet1!$A$30", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$30:$D$30", Sizes: "Sheet1!$B$30:$D$30"},
+		{Name: "Sheet1!$A$31", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$31:$D$31", Sizes: "Sheet1!$B$31:$D$31"},
+		{Name: "Sheet1!$A$32", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$32:$D$32", Sizes: "Sheet1!$B$32:$D$32"},
+		{Name: "Sheet1!$A$33", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$33:$D$33", Sizes: "Sheet1!$B$33:$D$33"},
+		{Name: "Sheet1!$A$34", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$34:$D$34", Sizes: "Sheet1!$B$34:$D$34"},
+		{Name: "Sheet1!$A$35", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$35:$D$35", Sizes: "Sheet1!$B$35:$D$35"},
+		{Name: "Sheet1!$A$36", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$36:$D$36", Sizes: "Sheet1!$B$36:$D$36"},
+		{Name: "Sheet1!$A$37", Categories: "Sheet1!$B$29:$D$29", Values: "Sheet1!$B$37:$D$37", Sizes: "Sheet1!$B$37:$D$37"},
+	}
 	format := GraphicOptions{
 		ScaleX:          defaultPictureScale,
 		ScaleY:          defaultPictureScale,
@@ -242,8 +254,8 @@ func TestAddChart(t *testing.T) {
 		{sheetName: "Sheet2", cell: "AV32", opts: &Chart{Type: "contour", Series: series, Format: format, Legend: legend, Title: ChartTitle{Name: "Contour Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero"}},
 		{sheetName: "Sheet2", cell: "BD1", opts: &Chart{Type: "wireframeContour", Series: series, Format: format, Legend: legend, Title: ChartTitle{Name: "Wireframe Contour Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero"}},
 		// bubble chart
-		{sheetName: "Sheet2", cell: "BD16", opts: &Chart{Type: "bubble", Series: series, Format: format, Legend: legend, Title: ChartTitle{Name: "Bubble Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero"}},
-		{sheetName: "Sheet2", cell: "BD32", opts: &Chart{Type: "bubble3D", Series: series, Format: format, Legend: legend, Title: ChartTitle{Name: "Bubble 3D Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero", XAxis: ChartAxis{MajorGridLines: true}, YAxis: ChartAxis{MajorGridLines: true}}},
+		{sheetName: "Sheet2", cell: "BD16", opts: &Chart{Type: "bubble", Series: series4, Format: format, Legend: legend, Title: ChartTitle{Name: "Bubble Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero"}},
+		{sheetName: "Sheet2", cell: "BD32", opts: &Chart{Type: "bubble3D", Series: series4, Format: format, Legend: legend, Title: ChartTitle{Name: "Bubble 3D Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero", XAxis: ChartAxis{MajorGridLines: true}, YAxis: ChartAxis{MajorGridLines: true}}},
 		// pie of pie chart
 		{sheetName: "Sheet2", cell: "BD48", opts: &Chart{Type: "pieOfPie", Series: series3, Format: format, Legend: legend, Title: ChartTitle{Name: "Pie of Pie Chart"}, PlotArea: plotArea, ShowBlanksAs: "zero", XAxis: ChartAxis{MajorGridLines: true}, YAxis: ChartAxis{MajorGridLines: true}}},
 		// bar of pie chart
@@ -256,18 +268,14 @@ func TestAddChart(t *testing.T) {
 	assert.NoError(t, err)
 	clusteredColumnCombo := [][]string{
 		{"A1", "line", "Clustered Column - Line Chart"},
-		{"I1", "bubble", "Clustered Column - Bubble Chart"},
-		{"Q1", "bubble3D", "Clustered Column - Bubble 3D Chart"},
-		{"Y1", "doughnut", "Clustered Column - Doughnut Chart"},
+		{"I1", "doughnut", "Clustered Column - Doughnut Chart"},
 	}
 	for _, props := range clusteredColumnCombo {
 		assert.NoError(t, f.AddChart("Combo Charts", props[0], &Chart{Type: "col", Series: series[:4], Format: format, Legend: legend, Title: ChartTitle{Name: props[2]}, PlotArea: ChartPlotArea{ShowBubbleSize: true, ShowCatName: false, ShowLeaderLines: false, ShowPercent: true, ShowSerName: true, ShowVal: true}}, &Chart{Type: props[1], Series: series[4:], Format: format, Legend: legend, PlotArea: ChartPlotArea{ShowBubbleSize: true, ShowCatName: false, ShowLeaderLines: false, ShowPercent: true, ShowSerName: true, ShowVal: true}}))
 	}
 	stackedAreaCombo := map[string][]string{
 		"A16": {"line", "Stacked Area - Line Chart"},
-		"I16": {"bubble", "Stacked Area - Bubble Chart"},
-		"Q16": {"bubble3D", "Stacked Area - Bubble 3D Chart"},
-		"Y16": {"doughnut", "Stacked Area - Doughnut Chart"},
+		"I16": {"doughnut", "Stacked Area - Doughnut Chart"},
 	}
 	for axis, props := range stackedAreaCombo {
 		assert.NoError(t, f.AddChart("Combo Charts", axis, &Chart{Type: "areaStacked", Series: series[:4], Format: format, Legend: legend, Title: ChartTitle{Name: props[1]}, PlotArea: ChartPlotArea{ShowBubbleSize: true, ShowCatName: false, ShowLeaderLines: false, ShowPercent: true, ShowSerName: true, ShowVal: true}}, &Chart{Type: props[0], Series: series[4:], Format: format, Legend: legend, PlotArea: ChartPlotArea{ShowBubbleSize: true, ShowCatName: false, ShowLeaderLines: false, ShowPercent: true, ShowSerName: true, ShowVal: true}}))

drawing.go

@@ -234,8 +234,8 @@ func (f *File) addChart(opts *Chart, comboCharts []*Chart) {
 		WireframeSurface3D:          f.drawSurface3DChart,
 		Contour:                     f.drawSurfaceChart,
 		WireframeContour:            f.drawSurfaceChart,
-		Bubble:                      f.drawBaseChart,
-		Bubble3D:                    f.drawBaseChart,
+		Bubble:                      f.drawBubbleChart,
+		Bubble3D:                    f.drawBubbleChart,
 	}
 	if opts.Legend.Position == "none" {
 		xlsxChartSpace.Chart.Legend = nil
@@ -270,7 +270,7 @@ func (f *File) drawBaseChart(opts *Chart) *cPlotArea {
 			Val: stringPtr("col"),
 		},
 		Grouping: &attrValString{
-			Val: stringPtr("clustered"),
+			Val: stringPtr(plotAreaChartGrouping[opts.Type]),
 		},
 		VaryColors: &attrValBool{
 			Val: opts.VaryColors,
@@ -288,9 +288,6 @@ func (f *File) drawBaseChart(opts *Chart) *cPlotArea {
 	if *c.BarDir.Val, ok = plotAreaChartBarDir[opts.Type]; !ok {
 		c.BarDir = nil
 	}
-	if *c.Grouping.Val, ok = plotAreaChartGrouping[opts.Type]; !ok {
-		c.Grouping = nil
-	}
 	if *c.Overlap.Val, ok = plotAreaChartOverlap[opts.Type]; !ok {
 		c.Overlap = nil
 	}
@@ -726,6 +723,26 @@ func (f *File) drawSurfaceChart(opts *Chart) *cPlotArea {
 	return plotArea
 }
 
+// drawBubbleChart provides a function to draw the c:bubbleChart element by
+// given format sets.
+func (f *File) drawBubbleChart(opts *Chart) *cPlotArea {
+	plotArea := &cPlotArea{
+		BubbleChart: &cCharts{
+			VaryColors: &attrValBool{
+				Val: opts.VaryColors,
+			},
+			Ser:   f.drawChartSeries(opts),
+			DLbls: f.drawChartDLbls(opts),
+			AxID: []*attrValInt{
+				{Val: intPtr(754001152)},
+				{Val: intPtr(753999904)},
+			},
+		},
+		ValAx: []*cAxs{f.drawPlotAreaCatAx(opts)[0], f.drawPlotAreaValAx(opts)[0]},
+	}
+	return plotArea
+}
+
 // drawChartShape provides a function to draw the c:shape element by given
 // format sets.
 func (f *File) drawChartShape(opts *Chart) *attrValString {
@@ -794,13 +811,13 @@ func (f *File) drawChartSeriesSpPr(i int, opts *Chart) *cSpPr {
 	var srgbClr *attrValString
 	var schemeClr *aSchemeClr
 
-	if color := stringPtr(opts.Series[i].Line.Color); *color != "" {
-		*color = strings.TrimPrefix(*color, "#")
-		srgbClr = &attrValString{Val: color}
+	if color := opts.Series[i].Fill.Color; len(color) == 1 {
+		srgbClr = &attrValString{Val: stringPtr(strings.TrimPrefix(color[0], "#"))}
 	} else {
 		schemeClr = &aSchemeClr{Val: "accent" + strconv.Itoa((opts.order+i)%6+1)}
 	}
 
+	spPr := &cSpPr{SolidFill: &aSolidFill{SchemeClr: schemeClr, SrgbClr: srgbClr}}
 	spPrScatter := &cSpPr{
 		Ln: &aLn{
 			W:      25400,
@@ -817,8 +834,15 @@ func (f *File) drawChartSeriesSpPr(i int, opts *Chart) *cSpPr {
 			},
 		},
 	}
-	chartSeriesSpPr := map[string]*cSpPr{Line: spPrLine, Scatter: spPrScatter}
-	return chartSeriesSpPr[opts.Type]
+	if chartSeriesSpPr, ok := map[string]*cSpPr{
+		Line: spPrLine, Scatter: spPrScatter,
+	}[opts.Type]; ok {
+		return chartSeriesSpPr
+	}
+	if srgbClr != nil {
+		return spPr
+	}
+	return nil
 }
 
 // drawChartSeriesDPt provides a function to draw the c:dPt element by given
@@ -923,7 +947,7 @@ func (f *File) drawChartSeriesXVal(v ChartSeries, opts *Chart) *cCat {
 			F: v.Categories,
 		},
 	}
-	chartSeriesXVal := map[string]*cCat{Scatter: cat}
+	chartSeriesXVal := map[string]*cCat{Scatter: cat, Bubble: cat, Bubble3D: cat}
 	return chartSeriesXVal[opts.Type]
 }
 
@@ -942,12 +966,12 @@ func (f *File) drawChartSeriesYVal(v ChartSeries, opts *Chart) *cVal {
 // drawCharSeriesBubbleSize provides a function to draw the c:bubbleSize
 // element by given chart series and format sets.
 func (f *File) drawCharSeriesBubbleSize(v ChartSeries, opts *Chart) *cVal {
-	if _, ok := map[string]bool{Bubble: true, Bubble3D: true}[opts.Type]; !ok {
+	if _, ok := map[string]bool{Bubble: true, Bubble3D: true}[opts.Type]; !ok || v.Sizes == "" {
 		return nil
 	}
 	return &cVal{
 		NumRef: &cNumRef{
-			F: v.Values,
+			F: v.Sizes,
 		},
 	}
 }

sheet.go

@@ -1920,7 +1920,7 @@ func (f *File) SetSheetDimension(sheet string, rangeRef string) error {
 	return err
 }
 
-// SetSheetDimension provides the method to get the used range of the worksheet.
+// GetSheetDimension provides the method to get the used range of the worksheet.
 func (f *File) GetSheetDimension(sheet string) (string, error) {
 	var ref string
 	ws, err := f.workSheetReader(sheet)

xmlChart.go

@@ -579,7 +579,6 @@ type ChartMarker struct {
 
 // ChartLine directly maps the format settings of the chart line.
 type ChartLine struct {
-	Color  string
 	Smooth bool
 	Width  float64
 }
@@ -588,7 +587,9 @@ type ChartLine struct {
 type ChartSeries struct {
 	Name       string
 	Categories string
+	Sizes      string
 	Values     string
+	Fill       Fill
 	Line       ChartLine
 	Marker     ChartMarker
 }