PDFGenerator

PDFGenerator is a simple PDF generator that generates with UIView, UIImage, ...etc .

do {
    let page: [PDFPage] = [
        .whitePage(CGSize(width: 200.0, height: 100.0)),
        .image(image1)
        .image(image2)
        .imagePath(lastPageImagePath)
        .whitePage(CGSize(width: 200.0, height: 100.0))
    ]
    let path = NSTemporaryDirectory().appending("sample1.pdf")
    try PDFGenerator.generate(page, to: path, password: "123456")
} catch let error {
    print(error)
}

Features

• Swift 5 is ready :pray:
• Multiple pages support.
• Also generate PDF with image path, image binary, image ref (CGImage)
• Good memory management.
• UIScrollView support : If view is UIScrollView, UITableView, UICollectionView, UIWebView, drawn whole content.
• Outputs as binary(Data) or writes to Disk(in given file path) directly.
• Corresponding to Error-Handling. Strange PDF has never been generated!!.
• DPI support. : Default dpi is 72.
• Password protection support.

Requirements

• iOS 9.0+
• Xcode 11+
• Swift 5.1

Installation

Carthage

• Add the following to your Cartfile:

github "sgr-ksmt/PDFGenerator" ~> 3.1

• Then run command:

$ carthage update

• Add the framework as described.
  
  Details: Carthage Readme

CocoaPods

PDFGenerator is available through CocoaPods. To install
it, simply add the following line to your Podfile:

pod 'PDFGenerator', '~> 3.1'

and run pod install

Usage

Generate from view(s) or image(s)

• UIView → PDF

func generatePDF() {
    let v1 = UIScrollView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 100.0))
    let v2 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 200.0))
    let v3 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 200.0))
    v1.backgroundColor = .red
    v1.contentSize = CGSize(width: 100.0, height: 200.0)
    v2.backgroundColor = .green
    v3.backgroundColor = .blue

    let dst = URL(fileURLWithPath: NSTemporaryDirectory().appending("sample1.pdf"))
    // outputs as Data
    do {
        let data = try PDFGenerator.generated(by: [v1, v2, v3])
        try data.write(to: dst, options: .atomic)
    } catch (let error) {
        print(error)
    }

    // writes to Disk directly.
    do {
        try PDFGenerator.generate([v1, v2, v3], to: dst)    
    } catch (let error) {
        print(error)
    }
}

Also PDF can generate from image(s), image path(s) same as example.

Generate from PDFPage object

• (UIVIew or UIImage) → PDF

Use PDFPage.

public enum PDFPage {
    case whitePage(CGSize) // = A white view
    case view(UIView)
    case image(UIImage)
    case imagePath(String)
    case binary(Data)
    case imageRef(CGImage)
}

func generatePDF() {
    let v1 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 100.0))
    v1.backgroundColor = .red
    let v2 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 200.0))
    v2.backgroundColor = .green

    let page1 = PDFPage.View(v1)
    let page2 = PDFPage.View(v2)
    let page3 = PDFPage.WhitePage(CGSizeMake(200, 100))
    let page4 = PDFPage.Image(UIImage(contentsOfFile: "path/to/image1.png")!)
    let page5 = PDFPage.ImagePath("path/to/image2.png")
    let pages = [page1, page2, page3, page4, page5]

    let dst = NSTemporaryDirectory().appending("sample1.pdf")
    do {
        try PDFGenerator.generate(pages, to: dst)
    } catch (let e) {
        print(e)
    }
}

Generate custom dpi PDF

// generate dpi300 PDF (default: 72dpi)
func generatePDF() {
    let v1 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 100.0))
    v1.backgroundColor = .red
    let v2 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 200.0))
    v2.backgroundColor = .green

    let page1 = PDFPage.View(v1)
    let page2 = PDFPage.View(v2)
    let pages = [page1, page2]

    let dst = NSTemporaryDirectory().appending("sample1.pdf")
    do {
        try PDFGenerator.generate(pages, to: dst, dpi: .dpi_300)
    } catch (let e) {
        print(e)
    }
}

Password protection

// generate PDF with password: 123456
func generatePDF() {
    let v1 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 100.0))
    v1.backgroundColor = .red
    let v2 = UIView(frame: CGRect(x: 0.0,y: 0, width: 100.0, height: 200.0))
    v2.backgroundColor = .green

    let page1 = PDFPage.view(v1)
    let page2 = PDFPage.view(v2)
    let pages = [page1, page2]

    let dst = NSTemporaryDirectory().appending("sample1.pdf")
    do {
        try PDFGenerator.generate(pages, to: dst, password: "123456")
        // or use PDFPassword model
        try PDFGenerator.generate(pages, to: dst, password: PDFPassword("123456"))
        // or use PDFPassword model and set user/owner password
        try PDFGenerator.generate(pages, to: dst, password: PDFPassword(user: "123456", owner: "abcdef"))
    } catch let error {
        print(error)
    }
}

Communication

• If you found a bug, please open an issue. :bow:
• Also, if you have a feature request, please open an issue. :thumbsup:
• If you want to contribute, submit a pull request.:muscle:

License

PDFGenerator is under MIT license. See the LICENSE file for more info.

GitHub

https://github.com/sgr-ksmt/PDFGenerator