Support image paste from qt5 clipboard

Change-Id: Ie1894d9549227c73c6da6688b0540c85d4593a2b
Reviewed-on: https://gerrit.libreoffice.org/61589
Tested-by: Jenkins
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

1 files changed, 22 insertions, 0 deletions

diff --git a/vcl/qt5/Qt5Clipboard.cxx b/vcl/qt5/Qt5Clipboard.cxx
index 6a777cc1af3e..14e98d4b6ed3 100644
--- a/vcl/qt5/Qt5Clipboard.cxx
+++ b/vcl/qt5/Qt5Clipboard.cxx
@@ -15,6 +15,7 @@
 
 #include <QtWidgets/QApplication>
 #include <QtGui/QClipboard>
+#include <QtCore/QBuffer>
 #include <QtCore/QMimeData>
 
 #include <Qt5Clipboard.hxx>
@@ -42,6 +43,13 @@ std::vector<css::datatransfer::DataFlavor> Qt5Transferable::getTransferDataFlavo
         aVector.push_back(aFlavor);
     }
 
+    if (mimeData->hasImage())
+    {
+        aFlavor.MimeType = "image/png";
+        aFlavor.DataType = cppu::UnoType<Sequence<sal_Int8>>::get();
+        aVector.push_back(aFlavor);
+    }
+
     return aVector;
 }
 
@@ -83,6 +91,20 @@ Qt5Transferable::getTransferData(const css::datatransfer::DataFlavor& rFlavor)
         Sequence<sal_Int8> aSeq(reinterpret_cast<const sal_Int8*>(aStr.c_str()), aStr.length());
         aRet <<= aSeq;
     }
+    else if (rFlavor.MimeType.startsWith("image") && mimeData->hasImage())
+    {
+        QImage image = qvariant_cast<QImage>(mimeData->imageData());
+        QByteArray ba;
+        QBuffer buffer(&ba);
+        sal_Int32 nIndex = rFlavor.MimeType.indexOf('/');
+        OUString sFormat(nIndex != -1 ? rFlavor.MimeType.copy(nIndex + 1) : "png");
+
+        buffer.open(QIODevice::WriteOnly);
+        image.save(&buffer, sFormat.toUtf8().getStr());
+
+        Sequence<sal_Int8> aSeq(reinterpret_cast<const sal_Int8*>(ba.data()), ba.size());
+        aRet <<= aSeq;
+    }
 
     return aRet;
 }