support to set print black and white and specified the first printed …

…page number

sheet.go

@@ -1135,14 +1135,19 @@ type PageLayoutOptionPtr interface {
 }
 
 type (
+	// BlackAndWhite specified print black and white.
+	BlackAndWhite bool
+	// FirstPageNumber specified first printed page number. If no value is
+	// specified, then 'automatic' is assumed.
+	FirstPageNumber uint
 	// PageLayoutOrientation defines the orientation of page layout for a
 	// worksheet.
 	PageLayoutOrientation string
-	// PageLayoutPaperSize defines the paper size of the worksheet
+	// PageLayoutPaperSize defines the paper size of the worksheet.
 	PageLayoutPaperSize int
-	// FitToHeight specified number of vertical pages to fit on
+	// FitToHeight specified number of vertical pages to fit on.
 	FitToHeight int
-	// FitToWidth specified number of horizontal pages to fit on
+	// FitToWidth specified number of horizontal pages to fit on.
 	FitToWidth int
 	// PageLayoutScale defines the print scaling. This attribute is restricted
 	// to values ranging from 10 (10%) to 400 (400%). This setting is
@@ -1157,6 +1162,41 @@ const (
 	OrientationLandscape = "landscape"
 )
 
+// setPageLayout provides a method to set the print black and white for the
+// worksheet.
+func (p BlackAndWhite) setPageLayout(ps *xlsxPageSetUp) {
+	ps.BlackAndWhite = bool(p)
+}
+
+// getPageLayout provides a method to get the print black and white for the
+// worksheet.
+func (p *BlackAndWhite) getPageLayout(ps *xlsxPageSetUp) {
+	if ps == nil {
+		*p = false
+		return
+	}
+	*p = BlackAndWhite(ps.BlackAndWhite)
+}
+
+// setPageLayout provides a method to set the first printed page number for
+// the worksheet.
+func (p FirstPageNumber) setPageLayout(ps *xlsxPageSetUp) {
+	if 0 < uint(p) {
+		ps.FirstPageNumber = uint(p)
+		ps.UseFirstPageNumber = true
+	}
+}
+
+// getPageLayout provides a method to get the first printed page number for
+// the worksheet.
+func (p *FirstPageNumber) getPageLayout(ps *xlsxPageSetUp) {
+	if ps == nil || ps.FirstPageNumber == 0 || !ps.UseFirstPageNumber {
+		*p = 1
+		return
+	}
+	*p = FirstPageNumber(ps.FirstPageNumber)
+}
+
 // setPageLayout provides a method to set the orientation for the worksheet.
 func (o PageLayoutOrientation) setPageLayout(ps *xlsxPageSetUp) {
 	ps.Orientation = string(o)
@@ -1238,8 +1278,14 @@ func (p *PageLayoutScale) getPageLayout(ps *xlsxPageSetUp) {
 // SetPageLayout provides a function to sets worksheet page layout.
 //
 // Available options:
-//   PageLayoutOrientation(string)
-//   PageLayoutPaperSize(int)
+//
+//    BlackAndWhite(bool)
+//    FirstPageNumber(uint)
+//    PageLayoutOrientation(string)
+//    PageLayoutPaperSize(int)
+//    FitToHeight(int)
+//    FitToWidth(int)
+//    PageLayoutScale(uint)
 //
 // The following shows the paper size sorted by excelize index number:
 //

sheet_test.go

@@ -13,15 +13,11 @@ import (
 
 func ExampleFile_SetPageLayout() {
 	f := NewFile()
-
 	if err := f.SetPageLayout(
 		"Sheet1",
+		BlackAndWhite(true),
+		FirstPageNumber(2),
 		PageLayoutOrientation(OrientationLandscape),
-	); err != nil {
-		fmt.Println(err)
-	}
-	if err := f.SetPageLayout(
-		"Sheet1",
 		PageLayoutPaperSize(10),
 		FitToHeight(2),
 		FitToWidth(2),
@@ -35,12 +31,20 @@ func ExampleFile_SetPageLayout() {
 func ExampleFile_GetPageLayout() {
 	f := NewFile()
 	var (
-		orientation PageLayoutOrientation
-		paperSize   PageLayoutPaperSize
-		fitToHeight FitToHeight
-		fitToWidth  FitToWidth
-		scale       PageLayoutScale
+		blackAndWhite   BlackAndWhite
+		firstPageNumber FirstPageNumber
+		orientation     PageLayoutOrientation
+		paperSize       PageLayoutPaperSize
+		fitToHeight     FitToHeight
+		fitToWidth      FitToWidth
+		scale           PageLayoutScale
 	)
+	if err := f.GetPageLayout("Sheet1", &blackAndWhite); err != nil {
+		fmt.Println(err)
+	}
+	if err := f.GetPageLayout("Sheet1", &firstPageNumber); err != nil {
+		fmt.Println(err)
+	}
 	if err := f.GetPageLayout("Sheet1", &orientation); err != nil {
 		fmt.Println(err)
 	}
@@ -57,13 +61,17 @@ func ExampleFile_GetPageLayout() {
 		fmt.Println(err)
 	}
 	fmt.Println("Defaults:")
+	fmt.Printf("- print black and white: %t\n", blackAndWhite)
+	fmt.Printf("- page number for first printed page: %d\n", firstPageNumber)
 	fmt.Printf("- orientation: %q\n", orientation)
 	fmt.Printf("- paper size: %d\n", paperSize)
 	fmt.Printf("- fit to height: %d\n", fitToHeight)
 	fmt.Printf("- fit to width: %d\n", fitToWidth)
 	fmt.Printf("- scale: %d\n", scale)
 	// Output:
 	// Defaults:
+	// - print black and white: false
+	// - page number for first printed page: 1
 	// - orientation: "portrait"
 	// - paper size: 1
 	// - fit to height: 1
@@ -103,6 +111,8 @@ func TestPageLayoutOption(t *testing.T) {
 		container  PageLayoutOptionPtr
 		nonDefault PageLayoutOption
 	}{
+		{new(BlackAndWhite), BlackAndWhite(true)},
+		{new(FirstPageNumber), FirstPageNumber(2)},
 		{new(PageLayoutOrientation), PageLayoutOrientation(OrientationLandscape)},
 		{new(PageLayoutPaperSize), PageLayoutPaperSize(10)},
 		{new(FitToHeight), FitToHeight(2)},

xmlWorksheet.go

@@ -108,13 +108,13 @@ type xlsxPageSetUp struct {
 	XMLName            xml.Name `xml:"pageSetup"`
 	BlackAndWhite      bool     `xml:"blackAndWhite,attr,omitempty"`
 	CellComments       string   `xml:"cellComments,attr,omitempty"`
-	Copies             int      `xml:"copies,attr,omitempty"`
+	Copies             uint     `xml:"copies,attr,omitempty"`
 	Draft              bool     `xml:"draft,attr,omitempty"`
 	Errors             string   `xml:"errors,attr,omitempty"`
-	FirstPageNumber    int      `xml:"firstPageNumber,attr,omitempty"`
+	FirstPageNumber    uint     `xml:"firstPageNumber,attr,omitempty"`
 	FitToHeight        int      `xml:"fitToHeight,attr,omitempty"`
 	FitToWidth         int      `xml:"fitToWidth,attr,omitempty"`
-	HorizontalDPI      int      `xml:"horizontalDpi,attr,omitempty"`
+	HorizontalDPI      uint     `xml:"horizontalDpi,attr,omitempty"`
 	RID                string   `xml:"http://schemas.openxmlformats.org/officeDocument/2006/relationships id,attr,omitempty"`
 	Orientation        string   `xml:"orientation,attr,omitempty"`
 	PageOrder          string   `xml:"pageOrder,attr,omitempty"`
@@ -124,7 +124,7 @@ type xlsxPageSetUp struct {
 	Scale              uint     `xml:"scale,attr,omitempty"`
 	UseFirstPageNumber bool     `xml:"useFirstPageNumber,attr,omitempty"`
 	UsePrinterDefaults bool     `xml:"usePrinterDefaults,attr,omitempty"`
-	VerticalDPI        int      `xml:"verticalDpi,attr,omitempty"`
+	VerticalDPI        uint     `xml:"verticalDpi,attr,omitempty"`
 }
 
 // xlsxPrintOptions directly maps the printOptions element in the namespace