mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2022 - Raw Material Software Limited
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 7 End-User License
|
|
Agreement and JUCE Privacy Policy.
|
|
|
|
End User License Agreement: www.juce.com/juce-7-licence
|
|
Privacy Policy: www.juce.com/juce-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
#if JUCE_WINDOWS
|
|
|
|
namespace juce::detail
|
|
{
|
|
|
|
class WindowsHooks::Hooks
|
|
{
|
|
public:
|
|
Hooks() = default;
|
|
|
|
~Hooks()
|
|
{
|
|
if (mouseWheelHook != nullptr)
|
|
UnhookWindowsHookEx (mouseWheelHook);
|
|
|
|
if (keyboardHook != nullptr)
|
|
UnhookWindowsHookEx (keyboardHook);
|
|
}
|
|
|
|
static inline std::weak_ptr<Hooks> weak;
|
|
|
|
private:
|
|
static LRESULT CALLBACK mouseWheelHookCallback (int nCode, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
if (nCode >= 0 && wParam == WM_MOUSEWHEEL)
|
|
{
|
|
// using a local copy of this struct to support old mingw libraries
|
|
struct MOUSEHOOKSTRUCTEX_ final : public MOUSEHOOKSTRUCT { DWORD mouseData; };
|
|
|
|
auto& hs = *(MOUSEHOOKSTRUCTEX_*) lParam;
|
|
|
|
if (auto* comp = Desktop::getInstance().findComponentAt ({ hs.pt.x, hs.pt.y }))
|
|
{
|
|
if (auto* target = static_cast<HWND> (comp->getWindowHandle()))
|
|
{
|
|
const ScopedThreadDPIAwarenessSetter scope { target };
|
|
return PostMessage (target, WM_MOUSEWHEEL,
|
|
hs.mouseData & 0xffff0000, MAKELPARAM (hs.pt.x, hs.pt.y));
|
|
}
|
|
}
|
|
}
|
|
|
|
return CallNextHookEx (getSingleton()->mouseWheelHook, nCode, wParam, lParam);
|
|
}
|
|
|
|
static LRESULT CALLBACK keyboardHookCallback (int nCode, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
auto& msg = *reinterpret_cast<MSG*> (lParam);
|
|
|
|
if (nCode == HC_ACTION && wParam == PM_REMOVE && HWNDComponentPeer::offerKeyMessageToJUCEWindow (msg))
|
|
{
|
|
msg = {};
|
|
msg.message = WM_USER;
|
|
return 0;
|
|
}
|
|
|
|
return CallNextHookEx (getSingleton()->keyboardHook, nCode, wParam, lParam);
|
|
}
|
|
|
|
HHOOK mouseWheelHook = SetWindowsHookEx (WH_MOUSE,
|
|
mouseWheelHookCallback,
|
|
(HINSTANCE) juce::Process::getCurrentModuleInstanceHandle(),
|
|
GetCurrentThreadId());
|
|
HHOOK keyboardHook = SetWindowsHookEx (WH_GETMESSAGE,
|
|
keyboardHookCallback,
|
|
(HINSTANCE) juce::Process::getCurrentModuleInstanceHandle(),
|
|
GetCurrentThreadId());
|
|
};
|
|
|
|
auto WindowsHooks::getSingleton() -> std::shared_ptr<Hooks>
|
|
{
|
|
auto& weak = Hooks::weak;
|
|
|
|
if (auto locked = weak.lock())
|
|
return locked;
|
|
|
|
auto strong = std::make_shared<Hooks>();
|
|
weak = strong;
|
|
return strong;
|
|
}
|
|
|
|
} // namespace juce::detail
|
|
|
|
#endif
|