Merge branch 'Rjinswand-strikeout'

4 files changed, 48 insertions, 9 deletions

diff --git a/def.go b/def.go
index 47e5135..8e2bea5 100644
--- a/def.go
+++ b/def.go
@@ -542,6 +542,7 @@ type Fpdf struct {
 	fontFamily       string                     // current font family
 	fontStyle        string                     // current font style
 	underline        bool                       // underlining flag
+	strikeout        bool                       // strike out flag
 	currentFont      fontDefType                // current font info
 	fontSizePt       float64                    // current font size in points
 	fontSize         float64                    // current font size in user unit
diff --git a/fpdf.go b/fpdf.go
index c482cb7..7be0117 100644
--- a/fpdf.go
+++ b/fpdf.go
@@ -102,6 +102,7 @@ func fpdfNew(orientationStr, unitStr, sizeStr, fontDirStr string, size SizeType)
 	f.fontStyle = ""
 	f.SetFontSize(12)
 	f.underline = false
+	f.strikeout = false
 	f.setDrawColor(0, 0, 0)
 	f.setFillColor(0, 0, 0)
 	f.setTextColor(0, 0, 0)
@@ -726,6 +727,9 @@ func (f *Fpdf) AddPageFormat(orientationStr string, size SizeType) {
 	if f.underline {
 		style += "U"
 	}
+	if f.strikeout {
+		style += "S"
+	}
 	fontsize := f.fontSizePt
 	lw := f.lineWidth
 	dc := f.color.draw
@@ -2004,9 +2008,9 @@ func (f *Fpdf) GetFontDesc(familyStr, styleStr string) FontDescType {
 // insensitive): "Courier" for fixed-width, "Helvetica" or "Arial" for sans
 // serif, "Times" for serif, "Symbol" or "ZapfDingbats" for symbolic.
 //
-// styleStr can be "B" (bold), "I" (italic), "U" (underscore) or any
-// combination. The default value (specified with an empty string) is regular.
-// Bold and italic styles do not apply to Symbol and ZapfDingbats.
+// styleStr can be "B" (bold), "I" (italic), "U" (underscore), "S" (strike-out)
+// or any combination. The default value (specified with an empty string) is
+// regular. Bold and italic styles do not apply to Symbol and ZapfDingbats.
 //
 // size is the font size measured in points. The default value is the current
 // size. If no size has been specified since the beginning of the document, the
@@ -2029,6 +2033,10 @@ func (f *Fpdf) SetFont(familyStr, styleStr string, size float64) {
 	if f.underline {
 		styleStr = strings.Replace(styleStr, "U", "", -1)
 	}
+	f.strikeout = strings.Contains(styleStr, "S")
+	if f.strikeout {
+		styleStr = strings.Replace(styleStr, "S", "", -1)
+	}
 	if styleStr == "IB" {
 		styleStr = "BI"
 	}
@@ -2198,6 +2206,9 @@ func (f *Fpdf) Text(x, y float64, txtStr string) {
 	if f.underline && txtStr != "" {
 		s += " " + f.dounderline(x, y, txtStr)
 	}
+	if f.strikeout && txtStr != "" {
+		s += " " + f.dostrikeout(x, y, txtStr)
+	}
 	if f.colorFlag {
 		s = sprintf("q %s %s Q", f.color.text.str, s)
 	}
@@ -2422,6 +2433,9 @@ func (f *Fpdf) CellFormat(w, h float64, txtStr, borderStr string, ln int,
 		if f.underline {
 			s.printf(" %s", f.dounderline(f.x+dx, f.y+dy+.5*h+.3*f.fontSize, txtStr))
 		}
+		if f.strikeout {
+			s.printf(" %s", f.dostrikeout(f.x+dx, f.y+dy+.5*h+.3*f.fontSize, txtStr))
+		}
 		if f.colorFlag {
 			s.printf(" Q")
 		}
@@ -2458,7 +2472,7 @@ func reverseText(text string) string {
 }
 
 // Cell is a simpler version of CellFormat with no fill, border, links or
-// special alignment.
+// special alignment. The Cell_strikeout() example demonstrates this method.
 func (f *Fpdf) Cell(w, h float64, txtStr string) {
 	f.CellFormat(w, h, txtStr, "", 0, "L", false, 0, "")
 }
@@ -3554,6 +3568,14 @@ func (f *Fpdf) dounderline(x, y float64, txt string) string {
 		(f.h-(y-up/1000*f.fontSize))*f.k, w*f.k, -ut/1000*f.fontSizePt)
 }
 
+func (f *Fpdf) dostrikeout(x, y float64, txt string) string {
+	up := float64(f.currentFont.Up)
+	ut := float64(f.currentFont.Ut)
+	w := f.GetStringWidth(txt) + f.ws*float64(blankCount(txt))
+	return sprintf("%.2f %.2f %.2f %.2f re f", x*f.k,
+		(f.h-(y+4*up/1000*f.fontSize))*f.k, w*f.k, -ut/1000*f.fontSizePt)
+}
+
 func bufEqual(buf []byte, str string) bool {
 	return string(buf[0:len(str)]) == str
 }
diff --git a/fpdf_test.go b/fpdf_test.go
index 43cea30..5035bd8 100644
--- a/fpdf_test.go
+++ b/fpdf_test.go
@@ -2711,3 +2711,22 @@ func ExampleFpdf_SetUnderlineThickness() {
 	// Output:
 	// Successfully generated pdf/Fpdf_UnderlineThickness.pdf
 }
+
+// ExampleFpdf_Cell_strikeout demonstrates striked-out text
+func ExampleFpdf_Cell_strikeout() {
+
+	pdf := gofpdf.New("P", "mm", "A4", "") // 210mm x 297mm
+	pdf.AddPage()
+
+	for fontSize := 4; fontSize < 40; fontSize += 10 {
+		pdf.SetFont("Arial", "S", float64(fontSize))
+		pdf.SetXY(0, float64(fontSize))
+		pdf.Cell(40, 10, "Hello World")
+	}
+
+	fileStr := example.Filename("Fpdf_Cell_strikeout")
+	err := pdf.OutputFileAndClose(fileStr)
+	example.Summary(err, fileStr)
+	// Output:
+	// Successfully generated pdf/Fpdf_Cell_strikeout.pdf
+}
diff --git a/go.mod b/go.mod
index cbb6a8c..f11d98c 100644
--- a/go.mod
+++ b/go.mod
@@ -4,13 +4,10 @@ go 1.12
 
 require (
 	github.com/boombuler/barcode v1.0.0
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/kr/pretty v0.1.0 // indirect
 	github.com/phpdave11/gofpdi v1.0.7
 	github.com/ruudk/golang-pdf417 v0.0.0-20181029194003-1af4ab5afa58
-	github.com/stretchr/testify v1.4.0 // indirect
+	gofpdf v0.0.0-00010101000000-000000000000
 	golang.org/x/image v0.0.0-20190902063713-cb417be4ba39
-	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 )
 
-replace github.com/jung-kurt/gopdf => ./
+replace gofpdf => ./