mirror of
https://github.com/gnif/LookingGlass.git
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109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "CSRWLock.h"
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#include "transport/IInputSource.h"
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#include "transport/IInputTransport.h"
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#include "transport/ITransport.h"
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#include <Windows.h>
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class IInputSink;
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class CInputHub final : public IInputTransport
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{
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private:
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static constexpr unsigned MAX_SOURCES = 8;
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static constexpr uint64_t OWNER_LEASE_MS = 500;
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struct Source final : public IInputTarget
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{
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CInputHub * owner = nullptr;
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BackendId backend = 0;
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uint32_t epoch = 0;
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IInputSource * endpoint = nullptr;
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bool running = false;
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bool active = false;
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bool reserved = false;
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bool failed = false;
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bool failurePending = false;
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SourceKey Key(const InputSourceId& source) const;
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InputTargetState GetState(const InputSourceId& source) override;
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void Failed() override;
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InputResult Claim(const InputSourceId& source) override;
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InputResult Touch(const InputSourceId& source) override;
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InputResult Release(
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const InputSourceId& source, bool reset) override;
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InputResult SendMouseRelative(const InputSourceId& source,
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int32_t deltaX, int32_t deltaY, int32_t wheel,
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uint32_t buttons) override;
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InputResult SendMouseAbsolute(const InputSourceId& source,
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uint16_t x, uint16_t y, int32_t wheel,
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uint32_t buttons) override;
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InputResult SendKeyboard(const InputSourceId& source,
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uint8_t modifiers, const uint8_t * keys) override;
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InputResult Reset(const InputSourceId& source) override;
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};
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mutable CSRWLock m_lock;
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CSRWLock m_lifecycleLock;
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Source m_sources[MAX_SOURCES];
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IInputSink * m_sink = nullptr;
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uint64_t m_sinkState = 0;
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SourceKey m_owner;
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uint64_t m_ownerDeadline = 0;
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bool m_started = false;
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bool SourceValid(const SourceKey& source) const;
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bool BindingPresent(const SourceKey& source) const;
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bool BindingValid(const SourceKey& source) const;
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bool OwnerValid(const SourceKey& source) const;
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bool CheckState();
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InputTargetState GetState(const SourceKey& source);
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void Failed(Source& source);
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InputResult Claim(const SourceKey& source);
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InputResult Touch(const SourceKey& source);
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InputResult Release(const SourceKey& source, bool reset);
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InputResult SendMouseRelative(const SourceKey& source,
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int32_t deltaX, int32_t deltaY, int32_t wheel, uint32_t buttons);
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InputResult SendMouseAbsolute(const SourceKey& source,
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uint16_t x, uint16_t y, int32_t wheel, uint32_t buttons);
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InputResult SendKeyboard(const SourceKey& source,
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uint8_t modifiers, const uint8_t * keys);
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InputResult Reset(const SourceKey& source);
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public:
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CInputHub();
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~CInputHub() override;
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CInputHub(const CInputHub&) = delete;
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CInputHub& operator=(const CInputHub&) = delete;
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bool Bind(BackendId backend, uint32_t epoch, IInputSource& source);
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void Unbind(BackendId backend, uint32_t epoch);
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bool TakeFailure(SourceKey& source);
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bool Start(IInputSink& sink) override;
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void Stop() override;
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};
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