Revision control
++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
++
++ #ifndef MESSAGE_H
++ #define MESSAGE_H
++
++ #include <QtCore/qglobal.h>
++ #include <QtCore/qlist.h>
++
++ #include <QtCore/qbytearray.h>
++
++ QT_BEGIN_NAMESPACE
++
++ class QIODevice;
++
++ using MessageId = QByteArrayView;
++
++ struct Message
++ {
++ enum class Type { Invalid, Uniforms, Filenames };
++
++ using MessagePtr = std::shared_ptr<Message>;
++
++ virtual ~Message();
++ // NOTE! These functions assume the device is open and read/writeable when called!
++ virtual bool read(QDataStream &device) = 0;
++ virtual bool write(QDataStream &device) const = 0;
++ virtual Type type() const = 0;
++
++ static Message::MessagePtr getMessage(QIODevice &device);
++ static bool postMessage(QIODevice &device, const Message &message);
++
++ friend QDataStream &operator>>(QDataStream &stream, Message &message) { message.read(stream); return stream; }
++ friend QDataStream &operator<<(QDataStream &stream, const Message &message) { message.write(stream); return stream; }
++ };
++
++ struct UniformsMessage : Message
++ {
++ static constexpr MessageId id { "UM" };
++
++ using Uniform = std::pair<QByteArray /* type */, QByteArray /* name */>;
++ using UniformList = QList<Uniform>;
++ UniformList uniforms;
++
++ UniformsMessage() = default;
++ UniformsMessage(UniformList list) : uniforms(list) {}
++ ~UniformsMessage() override;
++
++ bool read(QDataStream &stream) final;
++ bool write(QDataStream &stream) const final;
++ Type type() const final { return Type::Uniforms; }
++ };
++
++ struct FilenamesMessage : Message
++ {
++ static constexpr MessageId id { "FM" };
++
++ ~FilenamesMessage() override;
++ bool read(QDataStream &stream) final;
++ bool write(QDataStream &stream) const final;
++ Type type() const final { return Type::Filenames; }
++ QByteArray vertFilename;
++ QByteArray fragFilename;
++ };
++
++ QT_END_NAMESPACE
++
++ #endif // MESSAGE_H