| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 BogDan Vatra <bogdan@kde.org> |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
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| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qandroidparcel.h" |
| |
| #include "qandroidbinder.h" |
| #include "qandroidbinder_p.h" |
| #include "qandroidparcel_p.h" |
| |
| #include <QAndroidJniObject> |
| #include <QAndroidJniEnvironment> |
| #include <QBuffer> |
| #include <QDataStream> |
| #include <QVariant> |
| |
| QT_BEGIN_NAMESPACE |
| |
| struct FileDescriptor |
| { |
| explicit FileDescriptor(int fd = -1) |
| : handle("java/io/FileDescriptor") |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| setFileDescriptor(fd); |
| } |
| |
| inline void setFileDescriptor(int fd) |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| handle.setField("descriptor", fd); |
| } |
| |
| QAndroidJniObject handle; |
| }; |
| |
| QAndroidParcelPrivate::QAndroidParcelPrivate() |
| : handle(QAndroidJniObject::callStaticObjectMethod("android/os/Parcel","obtain", "()Landroid/os/Parcel;").object()) |
| {} |
| |
| QAndroidParcelPrivate::QAndroidParcelPrivate(const QAndroidJniObject &parcel) |
| : handle(parcel) |
| {} |
| |
| void QAndroidParcelPrivate::writeData(const QByteArray &data) const |
| { |
| if (data.isEmpty()) |
| return; |
| |
| QAndroidJniExceptionCleaner cleaner; |
| QAndroidJniEnvironment env; |
| jbyteArray array = env->NewByteArray(data.size()); |
| env->SetByteArrayRegion(array, 0, data.length(), reinterpret_cast<const jbyte*>(data.constData())); |
| handle.callMethod<void>("writeByteArray", "([B)V", array); |
| env->DeleteLocalRef(array); |
| } |
| |
| void QAndroidParcelPrivate::writeBinder(const QAndroidBinder &binder) const |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| handle.callMethod<void>("writeStrongBinder", "(Landroid/os/IBinder;)V", binder.handle().object()); |
| } |
| |
| void QAndroidParcelPrivate::writeFileDescriptor(int fd) const |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| handle.callMethod<void>("writeFileDescriptor", "(Ljava/io/FileDescriptor;)V", FileDescriptor(fd).handle.object()); |
| } |
| |
| QByteArray QAndroidParcelPrivate::readData() const |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| auto array = handle.callObjectMethod("createByteArray", "()[B"); |
| QAndroidJniEnvironment env; |
| auto sz = env->GetArrayLength(jbyteArray(array.object())); |
| QByteArray res(sz, Qt::Initialization::Uninitialized); |
| env->GetByteArrayRegion(jbyteArray(array.object()), 0, sz, reinterpret_cast<jbyte *>(res.data())); |
| return res; |
| } |
| |
| int QAndroidParcelPrivate::readFileDescriptor() const |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| auto parcelFD = handle.callObjectMethod("readFileDescriptor", "()Landroid/os/ParcelFileDescriptor;"); |
| if (parcelFD.isValid()) |
| return parcelFD.callMethod<jint>("getFd", "()I"); |
| return -1; |
| } |
| |
| QAndroidBinder QAndroidParcelPrivate::readBinder() const |
| { |
| QAndroidJniExceptionCleaner cleaner; |
| auto strongBinder = handle.callObjectMethod("readStrongBinder", "()Landroid/os/IBinder;"); |
| return QAndroidBinder(strongBinder.object()); |
| } |
| |
| /*! |
| \class QAndroidParcel |
| \inmodule QtAndroidExtras |
| |
| The QAndroidParcel is a convenience class that wraps the most important |
| \l {https://developer.android.com/reference/android/os/Parcel.html} {Android Parcel} methods. |
| |
| \since 5.10 |
| */ |
| |
| /*! |
| Creates a new object. |
| */ |
| QAndroidParcel::QAndroidParcel() |
| : d(new QAndroidParcelPrivate()) |
| { |
| } |
| |
| /*! |
| Wraps the \a parcel object. |
| */ |
| QAndroidParcel::QAndroidParcel(const QAndroidJniObject& parcel) |
| : d(new QAndroidParcelPrivate(parcel)) |
| { |
| |
| } |
| |
| QAndroidParcel::~QAndroidParcel() |
| { |
| } |
| |
| /*! |
| Writes the provided \a data as a byte array |
| */ |
| void QAndroidParcel::writeData(const QByteArray &data) const |
| { |
| d->writeData(data); |
| } |
| |
| /*! |
| Writes the provided \a value. The value is converted into a |
| QByteArray before is written. |
| */ |
| void QAndroidParcel::writeVariant(const QVariant &value) const |
| { |
| QByteArray buff; |
| QDataStream stream(&buff, QIODevice::WriteOnly); |
| stream << value; |
| d->writeData(buff); |
| } |
| |
| /*! |
| Writes a \a binder object. This is useful for a client to |
| send to a server a binder which can be used by the server callback the client. |
| */ |
| void QAndroidParcel::writeBinder(const QAndroidBinder &binder) const |
| { |
| d->writeBinder(binder); |
| } |
| |
| /*! |
| Writes the provided \a fd. |
| */ |
| void QAndroidParcel::writeFileDescriptor(int fd) const |
| { |
| d->writeFileDescriptor(fd); |
| } |
| |
| /*! |
| Returns the data as a QByteArray |
| */ |
| QByteArray QAndroidParcel::readData() const |
| { |
| return d->readData(); |
| } |
| |
| /*! |
| Returns the data as a QVariant |
| */ |
| QVariant QAndroidParcel::readVariant() const |
| { |
| QDataStream stream(d->readData()); |
| QVariant res; |
| stream >> res; |
| return res; |
| } |
| |
| /*! |
| Returns the binder as a QAndroidBinder |
| */ |
| QAndroidBinder QAndroidParcel::readBinder() const |
| { |
| return d->readBinder(); |
| } |
| |
| /*! |
| Returns the file descriptor |
| */ |
| int QAndroidParcel::readFileDescriptor() const |
| { |
| return d->readFileDescriptor(); |
| } |
| |
| /*! |
| The return value is useful to call other Java API which are not covered by this wrapper |
| */ |
| QAndroidJniObject QAndroidParcel::handle() const |
| { |
| return d->handle; |
| } |
| |
| QT_END_NAMESPACE |