Right to Left does not work properly on multicell, Works correctly on Text

[jayeshkarandemyglamm]

i want to print arabic text in a multicell, i was able to get the rtl with goarabic glyph function which work correctly on pdf.Text but does not work on pdf.Multicell

`
package main

import (
"log"

"github.com/01walid/goarabic"
"github.com/signintech/gopdf"

)
func main() {
pdf := gopdf.GoPdf{}
pdf.Start(gopdf.Config{ PageSize: gopdf.Rect{W: 595.28, H: 841.89}}) //595.28, 841.89 = A4
pdf.AddPage()
err := pdf.AddTTFFont("HDZB_5", "./DejaVuSansCondensed.ttf")
if err != nil {
log.Print(err.Error())
return
}

err = pdf.SetFont("HDZB_5", "", 14)
if err != nil {
log.Print(err.Error())
return
}
pdf.Cell(nil, "هذا يوم جيد لبدء شيء جديد وإظهار ذلك للجميع")
pdf.Br(20.0)
pdf.Text(reverseString(goarabic.ToGlyph("احمد")))
pdf.Br(20.0)
pdf.Text(reverseString(goarabic.ToGlyph("الايام السبعة")))
rect := &gopdf.Rect{W: 100, H: 100}
pdf.Br(20.0)
pdf.MultiCell(rect,reverseString(goarabic.ToGlyph("هذا يوم جيد لبدء شيء جديد وإظهار ذلك للجميع")))

pdf.Br(20.0)
pdf.Text(reverseString(goarabic.ToGlyph("هذا يوم جيد لبدء شيء جديد وإظهار ذلك للجميع")))

pdf.WritePdf("test1.pdf")
}

func reverseString(s string) string {
runes := []rune(s)
for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
runes[i], runes[j] = runes[j], runes[i]
}
return string(runes)
}
`

[oneplus1000]

I would like you to explain more for people who have zero knowledge of Arabic language, where the points are wrong and where the points are correct.

[jayeshkarandemyglamm]

i dont have much knowlege for arabic either but i could see discrepency when the multiline text was showing differently in browser and in the pdf
below is how a browser renders the multiline

and this is how it renders in go pdf

code snippet
pdf.Br(20.0) pdf.Text("example 1 with 2 with 3 with 4 and 5 and 6 and 7") pdf.Br(20.0) pdf.Text(reverseString(goarabic.ToGlyph("مثال 1 مع 2 مع 3 مع 4 و5 و6 و7"))) pdf.Br(20.0) rect := &gopdf.Rect{W: 100, H: 100} pdf.MultiCell(rect,"example 1 with 2 with 3 with 4 and 5 and 6 and 7") pdf.Br(20.0) pdf.MultiCell(rect,reverseString(goarabic.ToGlyph("مثال 1 مع 2 مع 3 مع 4 و5 و6 و7")))

[oneplus1000]

https://github.com/oneplus1000/gopdf/tree/issue_291

I've tried modifying the function MultiCellWithOption. To be able to add new lines RTL style.
(new code in the branch in link above.)

pdf.Br(20.0)
pdf.Text("example 1 with 2 with 3 with 4 and 5 and 6 and 7")
pdf.Br(20.0)
pdf.Text(reverseString(goarabic.ToGlyph("مثال 1 مع 2 مع 3 مع 4 و5 و6 و7")))
pdf.Br(20.0)
rect := &gopdf.Rect{W: 100, H: 100}
pdf.MultiCell(rect, "example 1 with 2 with 3 with 4 and 5 and 6 and 7")
pdf.Br(20.0)
pdf.MultiCellWithOption(rect, reverseString(goarabic.ToGlyph("مثال 1 مع 2 مع 3 مع 4 و5 و6 و7")), gopdf.CellOption{
  Align:      gopdf.Right,
  RtlLineBrk: true, // <-- Make a new line RTL style.
})
pdf.WritePdf("test.pdf")

I would like you to help me. Check if I did it right or wrong.