mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-14 00:14:18 +00:00
86d496d424
This patch should resolve an issue introduced in
0ab30555fc where arrow keys and other
directional keys (home, end, page up, page down) stopped working as
expected.
With this patch in place,
- IME input in plugins should work correctly, including for languages
with a selection palette (Japanese) and languages where multiple
keypresses combine to a single character (Korean).
- Keyboard shortcuts should work (cut, copy, paste)
- Directional keys should work
104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2022 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 7 End-User License
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Agreement and JUCE Privacy Policy.
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End User License Agreement: www.juce.com/juce-7-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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#if JUCE_WINDOWS
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namespace juce::detail
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{
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class WindowsHooks::Hooks
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{
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public:
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Hooks() = default;
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~Hooks()
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{
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if (mouseWheelHook != nullptr)
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UnhookWindowsHookEx (mouseWheelHook);
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if (keyboardHook != nullptr)
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UnhookWindowsHookEx (keyboardHook);
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}
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static inline std::weak_ptr<Hooks> weak;
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private:
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static LRESULT CALLBACK mouseWheelHookCallback (int nCode, WPARAM wParam, LPARAM lParam)
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{
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if (nCode >= 0 && wParam == WM_MOUSEWHEEL)
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{
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// using a local copy of this struct to support old mingw libraries
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struct MOUSEHOOKSTRUCTEX_ final : public MOUSEHOOKSTRUCT { DWORD mouseData; };
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auto& hs = *(MOUSEHOOKSTRUCTEX_*) lParam;
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if (auto* comp = Desktop::getInstance().findComponentAt ({ hs.pt.x, hs.pt.y }))
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if (comp->getWindowHandle() != nullptr)
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return PostMessage ((HWND) comp->getWindowHandle(), WM_MOUSEWHEEL,
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hs.mouseData & 0xffff0000, (hs.pt.x & 0xffff) | (hs.pt.y << 16));
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}
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return CallNextHookEx (getSingleton()->mouseWheelHook, nCode, wParam, lParam);
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}
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static LRESULT CALLBACK keyboardHookCallback (int nCode, WPARAM wParam, LPARAM lParam)
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{
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auto& msg = *reinterpret_cast<MSG*> (lParam);
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if (nCode == HC_ACTION && wParam == PM_REMOVE && HWNDComponentPeer::offerKeyMessageToJUCEWindow (msg))
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{
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msg = {};
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msg.message = WM_USER;
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return 0;
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}
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return CallNextHookEx (getSingleton()->keyboardHook, nCode, wParam, lParam);
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}
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HHOOK mouseWheelHook = SetWindowsHookEx (WH_MOUSE,
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mouseWheelHookCallback,
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(HINSTANCE) juce::Process::getCurrentModuleInstanceHandle(),
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GetCurrentThreadId());
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HHOOK keyboardHook = SetWindowsHookEx (WH_GETMESSAGE,
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keyboardHookCallback,
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(HINSTANCE) juce::Process::getCurrentModuleInstanceHandle(),
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GetCurrentThreadId());
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};
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auto WindowsHooks::getSingleton() -> std::shared_ptr<Hooks>
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{
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auto& weak = Hooks::weak;
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if (auto locked = weak.lock())
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return locked;
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auto strong = std::make_shared<Hooks>();
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weak = strong;
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return strong;
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}
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} // namespace juce::detail
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#endif
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