Fix qax-os#538, added setting a major unit and tick label skip support for the chart

Author: xuri

cell.go

@@ -44,7 +44,8 @@ func (f *File) GetCellValue(sheet, axis string) (string, error) {
 	})
 }
 
-// SetCellValue provides a function to set value of a cell. The following
+// SetCellValue provides a function to set value of a cell. The specified
+// coordinates should not be in the first row of the table. The following
 // shows the supported data types:
 //
 //    int

chart.go

@@ -653,10 +653,21 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // show_val: Specifies that the value shall be shown in a data label. The show_val property is optional. The default value is false.
 //
-// Set the primary horizontal and vertical axis options by x_axis and y_axis. The properties that can be set are:
+// Set the primary horizontal and vertical axis options by x_axis and y_axis. The properties of x_axis that can be set are:
 //
 //    major_grid_lines
 //    minor_grid_lines
+//    major_unit
+//    reverse_order
+//    maximum
+//    minimum
+//
+// The properties of y_axis that can be set are:
+//
+//    major_grid_lines
+//    minor_grid_lines
+//    major_unit
+//    tick_label_skip
 //    reverse_order
 //    maximum
 //    minimum
@@ -665,6 +676,10 @@ func parseFormatChartSet(formatSet string) (*formatChart, error) {
 //
 // minor_grid_lines: Specifies minor gridlines.
 //
+// major_unit: Specifies the distance between major ticks. Shall contain a positive floating-point number. The major_unit property is optional. The default value is auto.
+//
+// tick_label_skip: Specifies how many tick labels to skip between label that is drawn. The tick_label_skip property is optional. The default value is auto.
+//
 // reverse_order: Specifies that the categories or values on reverse order (orientation of the chart). The reverse_order property is optional. The default value is false.
 //
 // maximum: Specifies that the fixed maximum, 0 is auto. The maximum property is optional. The default value is auto.
@@ -1612,6 +1627,12 @@ func (f *File) drawPlotAreaCatAx(formatSet *formatChart) []*cAxs {
 	if formatSet.XAxis.MinorGridlines {
 		axs[0].MinorGridlines = &cChartLines{SpPr: f.drawPlotAreaSpPr()}
 	}
+	if formatSet.XAxis.MajorUnit != 0 {
+		axs[0].MajorUnit = &attrValFloat{Val: float64Ptr(formatSet.XAxis.MajorUnit)}
+	}
+	if formatSet.XAxis.TickLabelSkip != 0 {
+		axs[0].TickLblSkip = &attrValInt{Val: intPtr(formatSet.XAxis.TickLabelSkip)}
+	}
 	return axs
 }
 
@@ -1658,6 +1679,9 @@ func (f *File) drawPlotAreaValAx(formatSet *formatChart) []*cAxs {
 	if pos, ok := valTickLblPos[formatSet.Type]; ok {
 		axs[0].TickLblPos.Val = stringPtr(pos)
 	}
+	if formatSet.YAxis.MajorUnit != 0 {
+		axs[0].MajorUnit = &attrValFloat{Val: float64Ptr(formatSet.YAxis.MajorUnit)}
+	}
 	return axs
 }
 

chart_test.go

@@ -137,7 +137,7 @@ func TestAddChart(t *testing.T) {
 	assert.NoError(t, f.AddChart("Sheet2", "P1", `{"type":"radar","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$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$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"top_right","show_legend_key":false},"title":{"name":"Radar Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"span"}`))
 	assert.NoError(t, f.AddChart("Sheet2", "X1", `{"type":"scatter","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$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$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"bottom","show_legend_key":false},"title":{"name":"Scatter Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))
 	assert.NoError(t, f.AddChart("Sheet2", "P16", `{"type":"doughnut","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$A$30:$D$37","values":"Sheet1!$B$30:$B$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"right","show_legend_key":false},"title":{"name":"Doughnut Chart"},"plotarea":{"show_bubble_size":false,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":false,"show_val":false},"show_blanks_as":"zero"}`))
-	assert.NoError(t, f.AddChart("Sheet2", "X16", `{"type":"line","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$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$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37","line":{"width":0.25}}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"top","show_legend_key":false},"title":{"name":"Line Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero","x_axis":{"major_grid_lines":true,"minor_grid_lines":true},"y_axis":{"major_grid_lines":true,"minor_grid_lines":true}}`))
+	assert.NoError(t, f.AddChart("Sheet2", "X16", `{"type":"line","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$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$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37","line":{"width":0.25}}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"top","show_legend_key":false},"title":{"name":"Line Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero","x_axis":{"major_grid_lines":true,"minor_grid_lines":true,"major_unit":1,"tick_label_skip":1},"y_axis":{"major_grid_lines":true,"minor_grid_lines":true,"major_unit":1}}`))
 	assert.NoError(t, f.AddChart("Sheet2", "P32", `{"type":"pie3D","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$A$30:$D$37","values":"Sheet1!$B$30:$B$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"bottom","show_legend_key":false},"title":{"name":"3D Pie Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":false,"show_val":false},"show_blanks_as":"zero"}`))
 	assert.NoError(t, f.AddChart("Sheet2", "X32", `{"type":"pie","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$A$30:$D$37","values":"Sheet1!$B$30:$B$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"bottom","show_legend_key":false},"title":{"name":"Pie Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":false,"show_val":false},"show_blanks_as":"gap"}`))
 	assert.NoError(t, f.AddChart("Sheet2", "P48", `{"type":"bar","series":[{"name":"Sheet1!$A$30","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$30:$D$30"},{"name":"Sheet1!$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$33"},{"name":"Sheet1!$A$34","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$34:$D$34"},{"name":"Sheet1!$A$35","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$35:$D$35"},{"name":"Sheet1!$A$36","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$36:$D$36"},{"name":"Sheet1!$A$37","categories":"Sheet1!$B$29:$D$29","values":"Sheet1!$B$37:$D$37"}],"format":{"x_scale":1.0,"y_scale":1.0,"x_offset":15,"y_offset":10,"print_obj":true,"lock_aspect_ratio":false,"locked":false},"legend":{"position":"left","show_legend_key":false},"title":{"name":"2D Clustered Bar Chart"},"plotarea":{"show_bubble_size":true,"show_cat_name":false,"show_leader_lines":false,"show_percent":true,"show_series_name":true,"show_val":true},"show_blanks_as":"zero"}`))

xmlChart.go

@@ -357,9 +357,13 @@ type cAxs struct {
 	CrossAx        *attrValInt    `xml:"crossAx"`
 	Crosses        *attrValString `xml:"crosses"`
 	CrossBetween   *attrValString `xml:"crossBetween"`
+	MajorUnit      *attrValFloat  `xml:"majorUnit"`
+	MinorUnit      *attrValFloat  `xml:"minorUnit"`
 	Auto           *attrValBool   `xml:"auto"`
 	LblAlgn        *attrValString `xml:"lblAlgn"`
 	LblOffset      *attrValInt    `xml:"lblOffset"`
+	TickLblSkip    *attrValInt    `xml:"tickLblSkip"`
+	TickMarkSkip   *attrValInt    `xml:"tickMarkSkip"`
 	NoMultiLvlLbl  *attrValBool   `xml:"noMultiLvlLbl"`
 }
 
@@ -519,8 +523,9 @@ type formatChartAxis struct {
 	MajorTickMark       string  `json:"major_tick_mark"`
 	MinorTickMark       string  `json:"minor_tick_mark"`
 	MinorUnitType       string  `json:"minor_unit_type"`
-	MajorUnit           int     `json:"major_unit"`
+	MajorUnit           float64 `json:"major_unit"`
 	MajorUnitType       string  `json:"major_unit_type"`
+	TickLabelSkip       int     `json:"tick_label_skip"`
 	DisplayUnits        string  `json:"display_units"`
 	DisplayUnitsVisible bool    `json:"display_units_visible"`
 	DateAxis            bool    `json:"date_axis"`