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Add possibility to create new GoPdf struct from existing pdf byte array #157

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Add possibility to create new GoPdf struct from existing pdf byte array #157

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29 changes: 29 additions & 0 deletions gopdf.go
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Original file line number Diff line number Diff line change
Expand Up @@ -74,6 +74,35 @@ type GoPdf struct {
fpdi *gofpdi.Importer
}

func NewFromBytes(pdfBytes []byte, config Config) (gp *GoPdf) {
gp = new(GoPdf)
gp.Start(config)

rs := io.ReadSeeker(bytes.NewReader(pdfBytes))

gp.fpdi.SetSourceStream(&rs)

templateID := gp.fpdi.ImportPage(1, "/MediaBox")
pageSizes := gp.fpdi.GetPageSizes()

for i := 1; i < len(pageSizes); i++ {
gp.AddPage()

if i > 1 {
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@akhll akhll Jan 14, 2021 •
edited
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is it possible that i can be less than zero ?

templateID = gp.fpdi.ImportPage(i, "/MediaBox")
}

gp.fpdi.UseTemplate(
templateID,
0,
0,
pageSizes[i]["/MediaBox"]["w"],
pageSizes[i]["/MediaBox"]["h"])
}

return gp
}

//SetLineWidth : set line width
func (gp *GoPdf) SetLineWidth(width float64) {
gp.curr.lineWidth = gp.UnitsToPoints(width)
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