skia2/site/user/sample/pdf.md

Using Skia's PDF Backend
========================

Here is an example of using Skia's PDF backend in the recommended way:
via the SkDocument and SkCanvas APIs.

<!--?prettify?-->

    #include "SkDocument.h"

    bool WritePDF() {
        SkWStream* outputStream = ....;

        SkAutoTUnref<SkDocument> pdfDocument(
                SkDocument::CreatePDF(outputStream));

        int numberOfPages = ....;
        for (int page = 0; page < numberOfPages; ++page) {
            SkScalar pageWidth = ....;
            SkScalar pageHeight = ....;
            SkCanvas* pageCanvas =
                    pdfDocument->beginPage(pageWidth, pageHeight);

            // ....insert canvas draw commands here....

            pdfDocument->endPage();
        }

        SkTArray<SkDocument::Attribute> info;
        info.emplace_back(SkString("Title"), SkString("...."));
        info.emplace_back(SkString("Author"), SkString("...."));
        info.emplace_back(SkString("Subject"), SkString("...."));
        info.emplace_back(SkString("Keywords"), SkString("...."));
        info.emplace_back(SkString("Creator"), SkString("...."));
        SkTime::DateTime now;
        SkTime::GetDateTime(&now);
        pdfDocument->setMetadata(info, &now, &now);

        return pdfDocument->close();
    }