signintech / pdft

Creating PDF using existing PDF as template for GO (golang).

PDFT

PDFT is a GO library for creating PDF documents using existing PDFs as template. This library depend on gopdf.

Tested with PDF template files created from Libre office, Google Docs, Microsoft Word.

SAMPLE

var pt pdft.PDFt
err := pt.Open(pdfsource)
if err != nil {
	panic("Couldn't open pdf.")
}


err = pt.AddFont("arial", "./arial.ttf")
if err != nil {
    t.Error(err)
    return
}

err = pt.SetFont("arial", "", 14)
if err != nil {
    panic(err) 
}

//insert text to pdf
err = pt.Insert("Hi", 1, 10, 10, 100, 100, gopdf.Center|gopdf.Bottom, nil)
if err != nil {
    panic(err) 
}

// insert text to pdf with color
err = pt.Insert("Hi", 1, 10, 10, 100, 100, gopdf.Center|gopdf.Bottom, &FontColor{R: 255, G: 255, B: 255})
if err != nil {
    panic(err) 
}

// measure text width
var textWidth float64
textWidth, err = pt.MeasureTextWidth("Hi")

// read image file
pic, err := ioutil.ReadFile(picPath)
if err != nil {
	panic("Couldn't read pic.")
}

 
// insert image to pdf
err = pt.InsertImg(pic, 1, 182.0, 165.0, 172.0, 49.0)
if err != nil {
	panic("Couldn't insert image")
}

// insert image to pdf with cache, avoiding redundant data when inserting same images many times
err = pt.InsertImgWithCache(pic, 1, 182.0, 165.0, 172.0, 49.0)
if err != nil {
	panic("Couldn't insert image")
}

// Duplicate first page to last page
err = pt.DuplicatePageAfter(1, -1)
if err != nil {
	panic("Couldn't duplicate first page")
}

// Remove second page
err = pt.RemovePage(2)
if err != nil {
	panic("Couldn't remove targetPage")
}

err = pt.Save(target)
if err != nil {
	panic("Couldn't save pdf.")
}