generate PDF CreationDate in local time as per PDF specification

According to section 3.8.2, pg 100 of the PDF 1.4 reference [1]:

    PDF defines a standard date format, which closely
    follows that of the international standard ASN.1
    (Abstract Syntax Notation One), defined in ISO/IEC
    8824 (see the Bibliography). A date is a string of
    the form

        (D:YYYYMMDDHHmmSSOHH'mm')

    Whether or not the time zone is known, the rest of
    the date should be specified in local time.

[1] https://partners.adobe.com/public/developer/en/pdf/PDFReference.pdf

Change-Id: Ib375d587f983d9c70d995157f95d6a59dca037a5
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 11 insertions, 2 deletions

diff --git a/src/gui/painting/qpdf.cpp b/src/gui/painting/qpdf.cpp
index 84e18a64dd..7b8bae1642 100644
--- a/src/gui/painting/qpdf.cpp
+++ b/src/gui/painting/qpdf.cpp
@@ -1504,16 +1504,25 @@ void QPdfEnginePrivate::writeInfo()
     printString(creator);
     xprintf("\n/Producer ");
     printString(QString::fromLatin1("Qt " QT_VERSION_STR));
-    QDateTime now = QDateTime::currentDateTimeUtc();
+    QDateTime now = QDateTime::currentDateTime();
     QTime t = now.time();
     QDate d = now.date();
-    xprintf("\n/CreationDate (D:%d%02d%02d%02d%02d%02d)\n",
+    xprintf("\n/CreationDate (D:%d%02d%02d%02d%02d%02d",
             d.year(),
             d.month(),
             d.day(),
             t.hour(),
             t.minute(),
             t.second());
+    int offset = now.offsetFromUtc();
+    int hours  = (offset / 60) / 60;
+    int mins   = (offset / 60) % 60;
+    if (offset < 0)
+        xprintf("-%02d'%02d')\n", -hours, -mins);
+    else if (offset > 0)
+        xprintf("+%02d'%02d')\n", hours , mins);
+    else
+        xprintf("Z)\n");
     xprintf(">>\n"
             "endobj\n");
 }