documentation: SkDocument::MakePDF()

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 lang=cc?-->
 
     #include "SkDocument.h"
 
     bool WritePDF(SkWStream* outputStream) {
-        sk_sp<SkDocument> pdfDocument(SkDocument::CreatePDF(outputStream));
-        typedef SkDocument::Attribute Attr;
-        Attr info[] = {
-            Attr(SkString("Title"),    SkString("....")),
-            Attr(SkString("Author"),   SkString("....")),
-            Attr(SkString("Subject"),  SkString("....")),
-            Attr(SkString("Keywords"), SkString("....")),
-            Attr(SkString("Creator"),  SkString("....")),
-        };
-        int infoCount = sizeof(info) / sizeof(info[0]);
-        SkTime::DateTime now;
-        SkTime::GetDateTime(&now);
-        pdfDocument->setMetadata(info, infoCount, &now, &now);
+        SkDocument::PDFMetadata metadata;
+        metadata.fCreator  = "creator....";
+        metadata.fTitle    = "title...";
+        metadata.fAuthor   = "author...";
+        metadata.fSubject  = "subject...";
+        metadata.fKeywords = "keywords...";
+        metadata.fCreator  = "creator...";
+        SkTime::DateTime now = get_current_date_and_time();
+        metadata.fCreation.fEnabled = true;
+        metadata.fCreation.fDateTime = now;
+        metadata.fModified.fEnabled = true;
+        metadata.fModified.fDateTime = now;
+        sk_sp<SkDocument> pdfDocument(SkDocument::MakePDF(
+                outputStream, SK_ScalarDefaultRasterDPI, metadata,
+                nullptr, true);
+        assert(pdfDocument);
 
         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();
         }
         return pdfDocument->close();
     }