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outline.go
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outline.go
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package outline_example
import (
"fmt"
"os"
"time"
"github.com/signintech/gopdf"
)
func GetFont(pdf *gopdf.GoPdf, fontPath string) (err error) {
b, err := os.Open(fontPath)
if err != nil {
return err
}
err = pdf.AddTTFFontByReader("Ubuntu-L", b)
if err != nil {
return err
}
return err
}
func OutlineWithPositionExample() (err error) {
pdf := &gopdf.GoPdf{}
pdf.Start(gopdf.Config{PageSize: *gopdf.PageSizeA4})
err = GetFont(pdf, "./Ubuntu-L.ttf")
if err != nil {
return err
}
err = pdf.SetFont("Ubuntu-L", "", 14)
if err != nil {
return err
}
pdf.AddPage()
pdf.SetXY(150, 400)
pdf.AddOutlineWithPosition("first page")
err = pdf.Text("1.Hello World")
if err != nil {
return err
}
pdf.AddPage()
pdf.SetXY(150, 700)
pdf.AddOutlineWithPosition("second page")
err = pdf.Text("2.Hello World")
if err != nil {
return err
}
pdf.AddPage()
pdf.SetXY(150, 700)
pdf.AddOutlineWithPosition("third page")
err = pdf.Text("3.Hello World")
if err != nil {
return err
}
pdf.AddPage()
pdf.SetXY(150, 200)
pdf.AddOutlineWithPosition("forth page")
err = pdf.Text("4.Hello World")
if err != nil {
return err
}
pdf.AddPage()
err = pdf.WritePdf(fmt.Sprintf("./outline_demo_%d.pdf", time.Now().Unix()-1637580000))
if err != nil {
return err
}
return err
}
// OutlineWithLevelExample outlines with multiple level
func OutlineWithLevelExample() (err error) {
pdf := &gopdf.GoPdf{}
pdf.Start(gopdf.Config{PageSize: *gopdf.PageSizeA4})
err = GetFont(pdf, "./Ubuntu-L.ttf")
if err != nil {
return err
}
err = pdf.SetFont("Ubuntu-L", "", 14)
if err != nil {
return err
}
/*
expectation:
-- first page
-- second page
-- level 2-1
-- level 2-2
-- level 3-1
-- level 3-2
-- third page
*/
// outline nodes
var outlineNodes gopdf.OutlineNodes
var first = new(gopdf.OutlineNode)
var second = new(gopdf.OutlineNode)
var third = new(gopdf.OutlineNode)
var nodeObjs = make([]*gopdf.OutlineNode, 0)
nodeObjs = append(nodeObjs, first, second, third)
outlineNodes = nodeObjs
pdf.AddPage()
pdf.SetXY(150, 200)
first.Obj = pdf.AddOutlineWithPosition("first page")
err = pdf.Text("first page")
if err != nil {
return err
}
pdf.AddPage()
pdf.SetXY(150, 200)
second.Obj = pdf.AddOutlineWithPosition("second page")
err = pdf.Text("second page")
if err != nil {
return err
}
pdf.SetY(250)
lv21 := pdf.AddOutlineWithPosition("level 2-1")
var node21 = new(gopdf.OutlineNode)
node21.Obj = lv21
second.Children = append(second.Children, node21)
err = pdf.Text("level 2-1...")
if err != nil {
return err
}
pdf.SetY(350)
lv22 := pdf.AddOutlineWithPosition("level 2-2")
var node22 = new(gopdf.OutlineNode)
node22.Obj = lv22
second.Children = append(second.Children, node22)
err = pdf.Text("level 2-2...")
if err != nil {
return err
}
pdf.SetY(500)
lv31 := pdf.AddOutlineWithPosition("level 3-1")
var node31 = new(gopdf.OutlineNode)
node31.Obj = lv31
node22.Children = append(node22.Children, node31)
err = pdf.Text("level 3-1...")
if err != nil {
return err
}
pdf.SetY(600)
lv32 := pdf.AddOutlineWithPosition("level 3-2")
var node32 = new(gopdf.OutlineNode)
node32.Obj = lv32
node22.Children = append(node22.Children, node32)
err = pdf.Text("level 3-2...")
if err != nil {
return err
}
pdf.AddPage()
pdf.SetXY(150, 200)
third.Obj = pdf.AddOutlineWithPosition("third page")
err = pdf.Text("third page")
if err != nil {
return err
}
// parse outline nodes
outlineNodes.Parse()
err = pdf.WritePdf(fmt.Sprintf("./outline_demo.pdf"))
if err != nil {
return err
}
return err
}