ניהול PDF מסמכים באמצעות Free Go API

התקן gofpdf דרך GitHub

go get https://github.com/jung-kurt/gofpdf

לקבלת עדכון אחרון, אנא הפעל את הפקודה הבאה:

go get -u -v github.com/jung-kurt/gofpdf/...

ייצור PDF קבצים באמצעות Go API

pdf := gofpdf.New("P", "mm", "A4", "")
pdf.AddPage()
pdf.SetFont("Arial", "B", 16)
pdf.Cell(40, 10, "Hello, world")
err := pdf.OutputFileAndClose("hello.pdf")

הוספת תמונות ל-PDF עמודים באמצעות Go API

func ExampleFpdf_Image() {
	pdf := gofpdf.New("P", "mm", "A4", "")
	pdf.AddPage()
	pdf.SetFont("Arial", "", 11)
	pdf.Image(example.ImageFile("logo.png"), 10, 10, 30, 0, false, "", 0, "")
	pdf.Text(50, 20, "logo.png")
	pdf.Image(example.ImageFile("logo.gif"), 10, 40, 30, 0, false, "", 0, "")
	pdf.Text(50, 50, "logo.gif")
	pdf.Image(example.ImageFile("logo-gray.png"), 10, 70, 30, 0, false, "", 0, "")
	pdf.Text(50, 80, "logo-gray.png")
	pdf.Image(example.ImageFile("logo-rgb.png"), 10, 100, 30, 0, false, "", 0, "")
	pdf.Text(50, 110, "logo-rgb.png")
	pdf.Image(example.ImageFile("logo.jpg"), 10, 130, 30, 0, false, "", 0, "")
	pdf.Text(50, 140, "logo.jpg")
	fileStr := example.Filename("Fpdf_Image")
	err := pdf.OutputFileAndClose(fileStr)
	example.Summary(err, fileStr)
	// Output:
	// Successfully generated pdf/Fpdf_Image.pdf
}
 

הצג והוסף שכבות ל-PDF קבצים בתוך Apps

func ExampleFpdf_AddLayer() {
	pdf := gofpdf.New("P", "mm", "A4", "")
	pdf.AddPage()
	pdf.SetFont("Arial", "", 15)
	pdf.Write(8, "This line doesn't belong to any layer.\n")
	// Define layers
	l1 := pdf.AddLayer("Layer 1", true)
	l2 := pdf.AddLayer("Layer 2", true)
	// Open layer pane in PDF viewer
	pdf.OpenLayerPane()
	// First layer
	pdf.BeginLayer(l1)
	pdf.Write(8, "This line belongs to layer 1.\n")
	pdf.EndLayer()
	// Second layer
	pdf.BeginLayer(l2)
	pdf.Write(8, "This line belongs to layer 2.\n")
	pdf.EndLayer()
	// First layer again
	pdf.BeginLayer(l1)
	pdf.Write(8, "This line belongs to layer 1 again.\n")
	pdf.EndLayer()
	fileStr := example.Filename("Fpdf_AddLayer")
	err := pdf.OutputFileAndClose(fileStr)
	example.Summary(err, fileStr)
	// Output:
	// Successfully generated pdf/Fpdf_AddLayer.pdf
}
 

תוספות ל-PDF

func ExampleFpdf_AddPage() {
	pdf := gofpdf.New("P", "mm", "A4", "")
	pdf.SetTopMargin(30)
	pdf.SetHeaderFuncMode(func() {
		pdf.Image(example.ImageFile("logo.png"), 10, 6, 30, 0, false, "", 0, "")
		pdf.SetY(5)
		pdf.SetFont("Arial", "B", 15)
		pdf.Cell(80, 0, "")
		pdf.CellFormat(30, 10, "Title", "1", 0, "C", false, 0, "")
		pdf.Ln(20)
	}, true)
	pdf.SetFooterFunc(func() {
		pdf.SetY(-15)
		pdf.SetFont("Arial", "I", 8)
		pdf.CellFormat(0, 10, fmt.Sprintf("Page %d/{nb}", pdf.PageNo()),
			"", 0, "C", false, 0, "")
	})
	pdf.AliasNbPages("")
	pdf.AddPage()
	pdf.SetFont("Times", "", 12)
	for j := 1; j <= 40; j++ {
		pdf.CellFormat(0, 10, fmt.Sprintf("Printing line number %d", j),
			"", 1, "", false, 0, "")
	}
	fileStr := example.Filename("Fpdf_AddPage")
	err := pdf.OutputFileAndClose(fileStr)
	example.Summary(err, fileStr)
	// Output:
	// Successfully generated pdf/Fpdf_AddPage.pdf
}