This closes #1805, support set chart axis font family, size and strike style (#1809)

- Update unit test workflow dependencies package version

.github/workflows/go.yml

@@ -31,7 +31,7 @@ jobs:
       run: env GO111MODULE=on go test -v -timeout 30m -race ./... -coverprofile=coverage.txt -covermode=atomic
 
     - name: Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         file: coverage.txt
         flags: unittests

chart_test.go

@@ -214,7 +214,7 @@ func TestAddChart(t *testing.T) {
 		sheetName, cell string
 		opts            *Chart
 	}{
-		{sheetName: "Sheet1", cell: "P1", opts: &Chart{Type: Col, Series: series, Format: format, Legend: ChartLegend{Position: "none", ShowLegendKey: true}, Title: []RichTextRun{{Text: "2D Column Chart"}}, PlotArea: plotArea, Border: ChartLine{Type: ChartLineNone}, ShowBlanksAs: "zero", XAxis: ChartAxis{Font: Font{Bold: true, Italic: true, Underline: "dbl", Color: "000000"}, Title: []RichTextRun{{Text: "Primary Horizontal Axis Title"}}}, YAxis: ChartAxis{Font: Font{Bold: false, Italic: false, Underline: "sng", Color: "777777"}, Title: []RichTextRun{{Text: "Primary Vertical Axis Title", Font: &Font{Color: "777777", Bold: true, Italic: true, Size: 12}}}}}},
+		{sheetName: "Sheet1", cell: "P1", opts: &Chart{Type: Col, Series: series, Format: format, Legend: ChartLegend{Position: "none", ShowLegendKey: true}, Title: []RichTextRun{{Text: "2D Column Chart"}}, PlotArea: plotArea, Border: ChartLine{Type: ChartLineNone}, ShowBlanksAs: "zero", XAxis: ChartAxis{Font: Font{Bold: true, Italic: true, Underline: "dbl", Family: "Times New Roman", Size: 15, Strike: true, Color: "000000"}, Title: []RichTextRun{{Text: "Primary Horizontal Axis Title"}}}, YAxis: ChartAxis{Font: Font{Bold: false, Italic: false, Underline: "sng", Color: "777777"}, Title: []RichTextRun{{Text: "Primary Vertical Axis Title", Font: &Font{Color: "777777", Bold: true, Italic: true, Size: 12}}}}}},
 		{sheetName: "Sheet1", cell: "X1", opts: &Chart{Type: ColStacked, Series: series, Format: format, Legend: legend, Title: []RichTextRun{{Text: "2D Stacked Column Chart"}}, PlotArea: plotArea, Fill: Fill{Type: "pattern", Pattern: 1}, Border: ChartLine{Type: ChartLineAutomatic}, ShowBlanksAs: "zero"}},
 		{sheetName: "Sheet1", cell: "P16", opts: &Chart{Type: ColPercentStacked, Series: series, Format: format, Legend: legend, Title: []RichTextRun{{Text: "100% Stacked Column Chart"}}, PlotArea: plotArea, Fill: Fill{Type: "pattern", Color: []string{"EEEEEE"}, Pattern: 1}, Border: ChartLine{Type: ChartLineSolid, Width: 2}, ShowBlanksAs: "zero"}},
 		{sheetName: "Sheet1", cell: "X16", opts: &Chart{Type: Col3DClustered, Series: series, Format: format, Legend: ChartLegend{Position: "bottom", ShowLegendKey: false}, Title: []RichTextRun{{Text: "3D Clustered Column Chart"}}, PlotArea: plotArea, ShowBlanksAs: "zero"}},

drawing.go

@@ -1155,6 +1155,34 @@ func (f *File) drawPlotAreaSerAx(opts *Chart) []*cAxs {
 	}
 }
 
+// drawChartFont provides a function to draw the a:rPr element.
+func drawChartFont(fnt *Font, r *aRPr) {
+	if fnt == nil {
+		return
+	}
+	r.B = fnt.Bold
+	r.I = fnt.Italic
+	if idx := inStrSlice(supportedDrawingUnderlineTypes, fnt.Underline, true); idx != -1 {
+		r.U = supportedDrawingUnderlineTypes[idx]
+	}
+	if fnt.Color != "" {
+		if r.SolidFill == nil {
+			r.SolidFill = &aSolidFill{}
+		}
+		r.SolidFill.SchemeClr = nil
+		r.SolidFill.SrgbClr = &attrValString{Val: stringPtr(strings.ReplaceAll(strings.ToUpper(fnt.Color), "#", ""))}
+	}
+	if fnt.Family != "" {
+		r.Latin.Typeface = fnt.Family
+	}
+	if fnt.Size > 0 {
+		r.Sz = fnt.Size * 100
+	}
+	if fnt.Strike {
+		r.Strike = "sngStrike"
+	}
+}
+
 // drawPlotAreaTitles provides a function to draw the c:title element.
 func (f *File) drawPlotAreaTitles(runs []RichTextRun, vert string) *cTitle {
 	if len(runs) == 0 {
@@ -1163,15 +1191,7 @@ func (f *File) drawPlotAreaTitles(runs []RichTextRun, vert string) *cTitle {
 	title := &cTitle{Tx: cTx{Rich: &cRich{}}, Overlay: &attrValBool{Val: boolPtr(false)}}
 	for _, run := range runs {
 		r := &aR{T: run.Text}
-		if run.Font != nil {
-			r.RPr.B, r.RPr.I = run.Font.Bold, run.Font.Italic
-			if run.Font.Color != "" {
-				r.RPr.SolidFill = &aSolidFill{SrgbClr: &attrValString{Val: stringPtr(run.Font.Color)}}
-			}
-			if run.Font.Size > 0 {
-				r.RPr.Sz = run.Font.Size * 100
-			}
-		}
+		drawChartFont(run.Font, &r.RPr)
 		title.Tx.Rich.P = append(title.Tx.Rich.P, aP{
 			PPr:        &aPPr{DefRPr: aRPr{}},
 			R:          r,
@@ -1241,15 +1261,7 @@ func (f *File) drawPlotAreaTxPr(opts *ChartAxis) *cTxPr {
 		},
 	}
 	if opts != nil {
-		cTxPr.P.PPr.DefRPr.B = opts.Font.Bold
-		cTxPr.P.PPr.DefRPr.I = opts.Font.Italic
-		if idx := inStrSlice(supportedDrawingUnderlineTypes, opts.Font.Underline, true); idx != -1 {
-			cTxPr.P.PPr.DefRPr.U = supportedDrawingUnderlineTypes[idx]
-		}
-		if opts.Font.Color != "" {
-			cTxPr.P.PPr.DefRPr.SolidFill.SchemeClr = nil
-			cTxPr.P.PPr.DefRPr.SolidFill.SrgbClr = &attrValString{Val: stringPtr(strings.ReplaceAll(strings.ToUpper(opts.Font.Color), "#", ""))}
-		}
+		drawChartFont(&opts.Font, &cTxPr.P.PPr.DefRPr)
 	}
 	return cTxPr
 }