| 1 | // Copyright (C) 2021 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0 |
| 3 | |
| 4 | #ifndef MESSAGE_H |
| 5 | #define MESSAGE_H |
| 6 | |
| 7 | #include <QtCore/qglobal.h> |
| 8 | #include <QtCore/qlist.h> |
| 9 | |
| 10 | #include <QtCore/qbytearray.h> |
| 11 | |
| 12 | QT_BEGIN_NAMESPACE |
| 13 | |
| 14 | class QIODevice; |
| 15 | |
| 16 | using MessageId = QByteArrayView; |
| 17 | |
| 18 | struct Message |
| 19 | { |
| 20 | enum class Type { Invalid, Uniforms, Filenames }; |
| 21 | |
| 22 | using MessagePtr = std::shared_ptr<Message>; |
| 23 | |
| 24 | virtual ~Message(); |
| 25 | // NOTE! These functions assume the device is open and read/writeable when called! |
| 26 | virtual bool read(QDataStream &device) = 0; |
| 27 | virtual bool write(QDataStream &device) const = 0; |
| 28 | virtual Type type() const = 0; |
| 29 | |
| 30 | static Message::MessagePtr getMessage(QIODevice &device); |
| 31 | static bool postMessage(QIODevice &device, const Message &message); |
| 32 | |
| 33 | friend QDataStream &operator>>(QDataStream &stream, Message &message) { message.read(device&: stream); return stream; } |
| 34 | friend QDataStream &operator<<(QDataStream &stream, const Message &message) { message.write(device&: stream); return stream; } |
| 35 | }; |
| 36 | |
| 37 | struct UniformsMessage : Message |
| 38 | { |
| 39 | static constexpr MessageId id { "UM"}; |
| 40 | |
| 41 | using Uniform = std::pair<QByteArray /* type */, QByteArray /* name */>; |
| 42 | using UniformList = QList<Uniform>; |
| 43 | UniformList uniforms; |
| 44 | |
| 45 | UniformsMessage() = default; |
| 46 | UniformsMessage(UniformList list) : uniforms(list) {} |
| 47 | ~UniformsMessage() override; |
| 48 | |
| 49 | bool read(QDataStream &stream) final; |
| 50 | bool write(QDataStream &stream) const final; |
| 51 | Type type() const final { return Type::Uniforms; } |
| 52 | }; |
| 53 | |
| 54 | struct FilenamesMessage : Message |
| 55 | { |
| 56 | static constexpr MessageId id { "FM"}; |
| 57 | |
| 58 | ~FilenamesMessage() override; |
| 59 | bool read(QDataStream &stream) final; |
| 60 | bool write(QDataStream &stream) const final; |
| 61 | Type type() const final { return Type::Filenames; } |
| 62 | QByteArray vertFilename; |
| 63 | QByteArray fragFilename; |
| 64 | }; |
| 65 | |
| 66 | QT_END_NAMESPACE |
| 67 | |
| 68 | #endif // MESSAGE_H |
| 69 |