Add QWinMime.

Add class QWinMime (equivalent to WindowsMime in Qt 4).

[ChangeLog][QWinMime] Added abstract class QWinMime (equivalent
to WindowsMime in Qt 4) for registering custom mime type
conversions.

Task-number: QTBUG-39559
Change-Id: Ie8ff4db6cd0ce64f65b83232dc91d771238663d1
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

3 files changed, 156 insertions, 1 deletions

diff --git a/tests/auto/auto.pro b/tests/auto/auto.pro
index 12456c8..1e5d1ba 100644
--- a/tests/auto/auto.pro
+++ b/tests/auto/auto.pro
@@ -6,4 +6,5 @@ SUBDIRS += \
     qpixmap \
     qwintaskbarbutton \
     qwintaskbarprogress \
-    qwinjumplist
+    qwinjumplist \
+    qwinmime
diff --git a/tests/auto/qwinmime/qwinmime.pro b/tests/auto/qwinmime/qwinmime.pro
new file mode 100644
index 0000000..9a1563a
--- /dev/null
+++ b/tests/auto/qwinmime/qwinmime.pro
@@ -0,0 +1,4 @@
+CONFIG += testcase
+TARGET = tst_qwinmime
+QT += testlib winextras widgets
+SOURCES  += tst_qwinmime.cpp
diff --git a/tests/auto/qwinmime/tst_qwinmime.cpp b/tests/auto/qwinmime/tst_qwinmime.cpp
new file mode 100644
index 0000000..a91a972
--- /dev/null
+++ b/tests/auto/qwinmime/tst_qwinmime.cpp
@@ -0,0 +1,150 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest/QtTest>
+#include <QWinMime>
+#include <QtTest/QtTest>
+#include <QtGui/QClipboard>
+#include <QtGui/QPixmap>
+#include <QtCore/QVariant>
+
+class TestMime : public QWinMime
+{
+public:
+    TestMime(bool verbose = false) : formatsForMimeCalled(false), m_verbose(verbose) {}
+
+    bool canConvertFromMime(const FORMATETC &, const QMimeData *mimeData) const Q_DECL_OVERRIDE
+    {
+        if (m_verbose)
+            qDebug() << Q_FUNC_INFO << mimeData->formats();
+        return false;
+    }
+
+    bool convertFromMime(const FORMATETC &, const QMimeData *, STGMEDIUM *) const Q_DECL_OVERRIDE
+    {
+        if (m_verbose)
+            qDebug() << Q_FUNC_INFO;
+        return false;
+    }
+
+    QVector<FORMATETC> formatsForMime(const QString &mimeType, const QMimeData *mimeData) const Q_DECL_OVERRIDE
+    {
+        formatsForMimeCalled = true;
+        if (m_verbose)
+            qDebug() << Q_FUNC_INFO << mimeType << mimeData->formats();
+        return QVector<FORMATETC>();
+    }
+
+    bool canConvertToMime(const QString &mimeType, IDataObject *) const Q_DECL_OVERRIDE
+    {
+        if (m_verbose)
+            qDebug() << Q_FUNC_INFO << mimeType;
+        return false;
+    }
+
+    QVariant convertToMime(const QString &mimeType, IDataObject *, QVariant::Type preferredType) const Q_DECL_OVERRIDE
+    {
+        if (m_verbose)
+            qDebug() << Q_FUNC_INFO << mimeType << preferredType;
+        return QVariant();
+    }
+
+    QString mimeForFormat(const FORMATETC &) const Q_DECL_OVERRIDE
+    {
+        if (m_verbose)
+            qDebug() << Q_FUNC_INFO;
+        return QString();
+    }
+
+    mutable bool formatsForMimeCalled;
+
+private:
+    const bool m_verbose;
+};
+
+class tst_QWinMime : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void testRegisterType();
+    void testWinMime_data();
+    void testWinMime();
+};
+
+void tst_QWinMime::testRegisterType()
+{
+    const int type = QWinMime::registerMimeType("foo/bar");
+    QVERIFY2(type >= 0, QByteArray::number(type));
+}
+
+void tst_QWinMime::testWinMime_data()
+{
+    QTest::addColumn<QVariant>("data");
+    QTest::newRow("string") << QVariant(QStringLiteral("bla"));
+    QPixmap pm(10, 10);
+    pm.fill(Qt::black);
+    QTest::newRow("pixmap") << QVariant(pm);
+}
+
+void tst_QWinMime::testWinMime()
+{
+    QFETCH(QVariant, data);
+    // Basic smoke test for crashes, copy some text into clipboard and check whether
+    // the test implementation is called.
+    TestMime testMime;
+    QClipboard *clipboard = QApplication::clipboard();
+    switch (data.type()) {
+    case QMetaType::QString:
+        clipboard->setText(data.toString());
+        break;
+    case QMetaType::QPixmap:
+        clipboard->setPixmap(data.value<QPixmap>());
+        break;
+    default:
+        break;
+    }
+    QTRY_VERIFY(testMime.formatsForMimeCalled);
+}
+
+QTEST_MAIN(tst_QWinMime)
+
+#include "tst_qwinmime.moc"