Add support for T9 Write CJK

This change adds support for handwriting in Simplified Chinese.

The integration is based on T9 Write CJK SDK v7.8.1.

[ChangeLog] Added support for CJK (Chinese/Japanese/Korean) handwriting
via T9 Write.

Change-Id: I18481cfd897987ecb471c49ecfcac62ea0c3489c
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
Reviewed-by: Liang Qi <liang.qi@qt.io>

1 files changed, 117 insertions, 0 deletions

diff --git a/src/virtualkeyboard/t9writedictionary.cpp b/src/virtualkeyboard/t9writedictionary.cpp
new file mode 100644
index 00000000..d15b16e3
--- /dev/null
+++ b/src/virtualkeyboard/t9writedictionary.cpp
@@ -0,0 +1,117 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "t9writedictionary.h"
+#include "virtualkeyboarddebug.h"
+
+namespace QtVirtualKeyboard {
+
+T9WriteDictionary::T9WriteDictionary(DECUMA_SESSION *decumaSession,
+                                     const DECUMA_MEM_FUNCTIONS &memFuncs,
+                                     bool cjk) :
+    decumaSession(decumaSession),
+    memFuncs(memFuncs),
+    cjk(cjk),
+    sourceData(0),
+    sourceSize(0),
+    convertedData(0),
+    convertedSize(0)
+{
+}
+
+T9WriteDictionary::~T9WriteDictionary()
+{
+    if (convertedData) {
+        DECUMA_STATUS status = DECUMA_API(DestroyConvertedDictionary)(&convertedData, &memFuncs);
+        Q_ASSERT(status == decumaNoError);
+        Q_ASSERT(convertedData == 0);
+    }
+}
+
+bool T9WriteDictionary::load(const QString &fileName)
+{
+    if (sourceData || convertedData)
+        return false;
+
+    file.setFileName(fileName);
+    if (file.open(QIODevice::ReadOnly)) {
+        sourceSize = file.size();
+        sourceData = file.map(0, sourceSize, QFile::NoOptions);
+        if (!sourceData) {
+            sourceSize = 0;
+            qWarning() << "Could not read dictionary file" << fileName;
+        }
+        file.close();
+    } else {
+        qWarning() << "Could not open dictionary file" << fileName;
+    }
+
+    return sourceData != 0;
+}
+
+bool T9WriteDictionary::convert(const DECUMA_SRC_DICTIONARY_INFO &dictionaryInfo)
+{
+    if (!sourceData || convertedData)
+        return false;
+
+    DECUMA_STATUS status;
+    status = DECUMA_API(ConvertDictionary)(&convertedData, sourceData, (DECUMA_UINT32)sourceSize,
+                                           &dictionaryInfo, &convertedSize, &memFuncs);
+
+    if (status != decumaNoError) {
+        qWarning() << "Could not convert dictionary" << file.fileName();
+        file.unmap((uchar *)sourceData);
+        sourceSize = 0;
+        sourceData = 0;
+    }
+
+    return status == decumaNoError;
+}
+
+QString T9WriteDictionary::fileName() const
+{
+    return file.fileName();
+}
+
+const void *T9WriteDictionary::data() const
+{
+    return convertedData ? convertedData : sourceData;
+}
+
+qint64 T9WriteDictionary::size() const
+{
+    return convertedData ? convertedSize : sourceSize;
+}
+
+bool T9WriteDictionary::isConverted() const
+{
+    return convertedData != 0;
+}
+
+} // namespace QtVirtualKeyboard