From 621597b52b3fbadaa097d31760eef2d5b19a50de Mon Sep 17 00:00:00 2001
From: Joerg Lehmann <joerg.lehmann@nbit.ch>
Date: Wed, 9 Nov 2022 20:04:24 +0100
Subject: [PATCH] allow small fonts when prefixing text lines with @

---
 mkinvoice.go | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/mkinvoice.go b/mkinvoice.go
index e22184a..b7f14ab 100644
--- a/mkinvoice.go
+++ b/mkinvoice.go
@@ -73,6 +73,7 @@ const marginTop = 7
 const logoTop = 6
 const logoHeight = 20
 const lineSpacing = 5
+const lineSpacingTextsmall = 3
 const lineSpacingSmall = 4.5
 const lineSpacingPaymentSlipBig = 6
 const lineSpacingPaymentSlipBelowHeading = 2.8
@@ -147,6 +148,16 @@ func writeText(x float64, y float64, w float64, text string, alignStr ...string)
 	pdf.CellFormat(w, 11, tr(text), "", 0, align, false, 0, "")
 }
 
+func writeTextsmall(x float64, y float64, w float64, text string, alignStr ...string) {
+	tr := pdf.UnicodeTranslatorFromDescriptor("")
+	align := "LT"
+	if len(alignStr) > 0 {
+		align = alignStr[0]
+	}
+	pdf.SetXY(x, y)
+	pdf.CellFormat(w, 6, tr(text), "", 0, align, false, 0, "")
+}
+
 func setupInvoice() {
 	pdf = gofpdf.New("P", "mm", "A4", "")
 	pdf.SetMargins(0, 0, 0)
@@ -260,7 +271,18 @@ func printItems() {
 			totalNetAmount = totalNetAmount + itemNetAmount
 			writeText(tabstopPrice, yPos, widthPrice, floatToString(itemNetAmount, "'"), "TR")
 		}
-		if i.Text != "" {
+		if strings.HasPrefix(i.Text, "@") {
+			pdf.SetFont("Dejavusans", "", smallFontSize)
+			textwithoutprefix := i.Text[1:]
+			lines := pdf.SplitText(textwithoutprefix, widthItemText)
+			for _, il := range lines {
+				totalItemLines = totalItemLines + 1
+				writeTextsmall(tabstopLeft, yPos, 0, strings.ReplaceAll(il, "_", " "))
+				yPos = yPos + lineSpacingTextsmall
+				maybeNewPage()
+			}
+			pdf.SetFont("Dejavusans", "", defaultFontSize)
+		} else if i.Text != "" {
 			lines := pdf.SplitText(i.Text, widthItemText)
 			for _, il := range lines {
 				totalItemLines = totalItemLines + 1