This closes qax-os#279, refs qax-os#1536, change the default point to pixels conversion factor

Author: xuri

chart_test.go

@@ -94,7 +94,7 @@ func TestChartSize(t *testing.T) {
 	}
 
 	if !assert.Equal(t, 14, anchor.To.Col, "Expected 'to' column 14") ||
-		!assert.Equal(t, 27, anchor.To.Row, "Expected 'to' row 27") {
+		!assert.Equal(t, 29, anchor.To.Row, "Expected 'to' row 29") {
 
 		t.FailNow()
 	}

rows.go

@@ -380,6 +380,9 @@ func (f *File) getRowHeight(sheet string, row int) int {
 			return int(convertRowHeightToPixels(*v.Ht))
 		}
 	}
+	if ws.SheetFormatPr != nil && ws.SheetFormatPr.DefaultRowHeight > 0 {
+		return int(convertRowHeightToPixels(ws.SheetFormatPr.DefaultRowHeight))
+	}
 	// Optimization for when the row heights haven't changed.
 	return int(defaultRowHeightPixels)
 }
@@ -390,7 +393,7 @@ func (f *File) getRowHeight(sheet string, row int) int {
 //	height, err := f.GetRowHeight("Sheet1", 1)
 func (f *File) GetRowHeight(sheet string, row int) (float64, error) {
 	if row < 1 {
-		return defaultRowHeightPixels, newInvalidRowNumberError(row)
+		return defaultRowHeight, newInvalidRowNumberError(row)
 	}
 	ht := defaultRowHeight
 	ws, err := f.workSheetReader(sheet)
@@ -840,10 +843,8 @@ func (f *File) SetRowStyle(sheet string, start, end, styleID int) error {
 // cell from user's units to pixels. If the height hasn't been set by the user
 // we use the default value. If the row is hidden it has a value of zero.
 func convertRowHeightToPixels(height float64) float64 {
-	var pixels float64
 	if height == 0 {
-		return pixels
+		return 0
 	}
-	pixels = math.Ceil(4.0 / 3.0 * height)
-	return pixels
+	return math.Ceil(4.0 / 3.4 * height)
 }

xmlDrawing.go

@@ -144,7 +144,7 @@ const (
 	pivotTableVersion           = 3
 	defaultPictureScale         = 1.0
 	defaultChartDimensionWidth  = 480
-	defaultChartDimensionHeight = 290
+	defaultChartDimensionHeight = 260
 	defaultChartLegendPosition  = "bottom"
 	defaultChartShowBlanksAs    = "gap"
 	defaultShapeSize            = 160