mirror of
https://github.com/xiaoyifang/goldendict-ng.git
synced 2024-11-24 12:44:07 +00:00
736 lines
19 KiB
C++
736 lines
19 KiB
C++
#ifdef __WIN32 // Q_OS_WIN32 isn't available at this point
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#define _WIN32_WINNT 0x0430
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#include <windows.h>
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#endif
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#include "hotkeywrapper.hh"
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#include <QWidget>
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#include <QMainWindow>
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#include "dprintf.hh"
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#ifdef HAVE_X11
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#include <X11/Xlibint.h>
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#endif
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//////////////////////////////////////////////////////////////////////////
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QHotkeyApplication::QHotkeyApplication( int & argc, char ** argv ):
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QtSingleApplication( argc, argv )
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{
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#if defined( Q_OS_WIN ) && IS_QT_5
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installNativeEventFilter( this );
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#endif
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}
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QHotkeyApplication::QHotkeyApplication( QString const & id,
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int & argc, char ** argv ):
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QtSingleApplication( id, argc, argv )
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{
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#if defined( Q_OS_WIN ) && IS_QT_5
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installNativeEventFilter( this );
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#endif
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}
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void QHotkeyApplication::addDataCommiter( DataCommitter & d )
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{
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dataCommitters.append( &d );
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}
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void QHotkeyApplication::removeDataCommiter( DataCommitter & d )
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{
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dataCommitters.removeAll( &d );
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}
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void QHotkeyApplication::commitData( QSessionManager & s )
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{
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for( int x = 0; x < dataCommitters.size(); ++x )
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dataCommitters[ x ]->commitData( s );
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}
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void QHotkeyApplication::registerWrapper(HotkeyWrapper *wrapper)
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{
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if (wrapper && !hotkeyWrappers.contains(wrapper))
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hotkeyWrappers.append(wrapper);
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}
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void QHotkeyApplication::unregisterWrapper(HotkeyWrapper *wrapper)
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{
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if (wrapper && hotkeyWrappers.contains(wrapper))
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hotkeyWrappers.removeAll(wrapper);
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}
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//////////////////////////////////////////////////////////////////////////
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HotkeyStruct::HotkeyStruct( quint32 key_, quint32 key2_, quint32 modifier_,
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int handle_, int id_ ):
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key( key_ ),
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key2( key2_ ),
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modifier( modifier_ ),
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handle( handle_ ),
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id( id_ )
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#ifdef Q_OS_MACX
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, hkRef( 0 )
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, hkRef2( 0 )
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#endif
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{
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}
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//////////////////////////////////////////////////////////////////////////
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#if !defined(Q_OS_MAC) && !defined(Q_WS_QWS)
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HotkeyWrapper::HotkeyWrapper(QObject *parent) : QThread( parent ),
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state2(false)
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{
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#ifdef Q_OS_WIN
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hwnd=(HWND)((static_cast<QMainWindow*>(parent))->winId());
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#else
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init();
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#endif
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(static_cast<QHotkeyApplication*>(qApp))->registerWrapper(this);
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}
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HotkeyWrapper::~HotkeyWrapper()
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{
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unregister();
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}
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void HotkeyWrapper::waitKey2()
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{
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state2 = false;
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#ifdef HAVE_X11
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if ( keyToUngrab != grabbedKeys.end() )
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{
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ungrabKey( keyToUngrab );
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keyToUngrab = grabbedKeys.end();
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}
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#endif
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}
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bool HotkeyWrapper::checkState(quint32 vk, quint32 mod)
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{
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if ( state2 )
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{ // wait for 2nd key
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waitKey2(); // Cancel the 2nd-key wait stage
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if (state2waiter.key2 == vk && state2waiter.modifier == mod)
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{
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emit hotkeyActivated( state2waiter.handle );
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return true;
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}
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}
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for (int i = 0; i < hotkeys.count(); i++) {
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const HotkeyStruct &hs = hotkeys.at(i);
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if (hs.key == vk && hs.modifier == mod) {
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#ifdef Q_OS_WIN32
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if( hs.key2 != 0 || ( mod == MOD_CONTROL && ( vk == VK_INSERT || vk == 'c' || vk == 'C' ) ) )
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{
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// Pass-through first part of compound hotkey or clipdoard copy command
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INPUT i[ 10 ];
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memset( i, 0, sizeof( i ) );
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int nextKeyNom = 0;
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short emulateModKeys = 0;
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// If modifier keys aren't pressed it looks like emulation
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// We then also emulate full sequence
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if( ( mod & MOD_ALT ) != 0 && ( GetAsyncKeyState( VK_MENU ) & 0x8000 ) == 0 )
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{
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emulateModKeys |= MOD_ALT;
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_MENU;
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nextKeyNom += 1;
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}
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if( ( mod & MOD_CONTROL ) != 0 && ( GetAsyncKeyState( VK_CONTROL ) & 0x8000 ) == 0 )
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{
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emulateModKeys |= MOD_CONTROL;
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_CONTROL;
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nextKeyNom += 1;
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}
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if( ( mod & MOD_SHIFT ) != 0 && ( GetAsyncKeyState( VK_SHIFT ) & 0x8000 ) == 0 )
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{
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emulateModKeys |= MOD_SHIFT;
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_SHIFT;
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nextKeyNom += 1;
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}
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if( ( mod & MOD_WIN ) != 0 && ( GetAsyncKeyState( VK_LWIN ) & 0x8000 ) == 0
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&& ( GetAsyncKeyState( VK_RWIN ) & 0x8000 ) == 0 )
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{
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emulateModKeys |= MOD_WIN;
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_LWIN;
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nextKeyNom += 1;
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}
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = vk;
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nextKeyNom += 1;
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = vk;
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i[ nextKeyNom ].ki.dwFlags = KEYEVENTF_KEYUP;
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nextKeyNom += 1;
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if( emulateModKeys & MOD_WIN )
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{
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_LWIN;
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i[ nextKeyNom ].ki.dwFlags = KEYEVENTF_KEYUP;
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nextKeyNom += 1;
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}
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if( emulateModKeys & MOD_SHIFT )
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{
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_SHIFT;
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i[ nextKeyNom ].ki.dwFlags = KEYEVENTF_KEYUP;
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nextKeyNom += 1;
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}
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if( emulateModKeys & MOD_CONTROL )
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{
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_CONTROL;
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i[ nextKeyNom ].ki.dwFlags = KEYEVENTF_KEYUP;
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nextKeyNom += 1;
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}
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if( emulateModKeys & MOD_ALT )
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{
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i[ nextKeyNom ].type = INPUT_KEYBOARD;
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i[ nextKeyNom ].ki.wVk = VK_MENU;
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i[ nextKeyNom ].ki.dwFlags = KEYEVENTF_KEYUP;
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nextKeyNom += 1;
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}
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UnregisterHotKey( hwnd, hs.id );
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SendInput( nextKeyNom, i, sizeof( *i ) );
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RegisterHotKey(hwnd, hs.id, hs.modifier, hs.key);
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}
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#endif
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if (hs.key2 == 0) {
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emit hotkeyActivated( hs.handle );
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return true;
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}
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state2 = true;
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state2waiter = hs;
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QTimer::singleShot(500, this, SLOT(waitKey2()));
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#ifdef HAVE_X11
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// Grab the second key, unless it's grabbed already
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// Note that we only grab the clipboard key only if
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// the sequence didn't begin with it
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if ( ( isCopyToClipboardKey( hs.key, hs.modifier ) ||
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!isCopyToClipboardKey( hs.key2, hs.modifier ) ) &&
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!isKeyGrabbed( hs.key2, hs.modifier ) )
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keyToUngrab = grabKey( hs.key2, hs.modifier );
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#endif
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return true;
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}
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}
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state2 = false;
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return false;
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}
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//////////////////////////////////////////////////////////////////////////
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#ifdef Q_OS_WIN
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void HotkeyWrapper::init()
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{
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QWidget *root = qApp->topLevelWidgets().value(0);
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hwnd = (HWND)root->winId();
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}
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bool HotkeyWrapper::setGlobalKey( int key, int key2,
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Qt::KeyboardModifiers modifier, int handle )
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{
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if ( !key )
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return false; // We don't monitor empty combinations
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static int id = 0;
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if( id > 0xBFFF - 1 )
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id = 0;
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quint32 mod = 0;
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if (modifier & Qt::CTRL)
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mod |= MOD_CONTROL;
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if (modifier & Qt::ALT)
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mod |= MOD_ALT;
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if (modifier & Qt::SHIFT)
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mod |= MOD_SHIFT;
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if (modifier & Qt::META)
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mod |= MOD_WIN;
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quint32 vk = nativeKey( key );
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quint32 vk2 = key2 ? nativeKey( key2 ) : 0;
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hotkeys.append( HotkeyStruct( vk, vk2, mod, handle, id ) );
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if (!RegisterHotKey(hwnd, id++, mod, vk))
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return false;
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if ( key2 && key2 != key )
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return RegisterHotKey(hwnd, id++, mod, vk2);
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return true;
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}
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bool HotkeyWrapper::winEvent ( MSG * message, long * result )
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{
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(void) result;
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if (message->message == WM_HOTKEY)
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return checkState( (message->lParam >> 16), (message->lParam & 0xffff) );
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return false;
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}
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quint32 HotkeyWrapper::nativeKey(int key)
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{
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if (key >= Qt::Key_0 && key <= Qt::Key_9)
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return key;
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if (key >= Qt::Key_A && key <= Qt::Key_Z)
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return key;
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switch (key) {
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case Qt::Key_Space: return VK_SPACE;
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case Qt::Key_Asterisk: return VK_MULTIPLY;
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case Qt::Key_Plus: return VK_ADD;
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case Qt::Key_Comma: return VK_SEPARATOR;
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case Qt::Key_Minus: return VK_SUBTRACT;
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case Qt::Key_Slash: return VK_DIVIDE;
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case Qt::Key_Tab:
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case Qt::Key_Backtab: return VK_TAB;
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case Qt::Key_Backspace: return VK_BACK;
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case Qt::Key_Return:
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case Qt::Key_Escape: return VK_ESCAPE;
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case Qt::Key_Enter: return VK_RETURN;
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case Qt::Key_Insert: return VK_INSERT;
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case Qt::Key_Delete: return VK_DELETE;
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case Qt::Key_Pause: return VK_PAUSE;
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case Qt::Key_Print: return VK_PRINT;
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case Qt::Key_Clear: return VK_CLEAR;
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case Qt::Key_Home: return VK_HOME;
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case Qt::Key_End: return VK_END;
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case Qt::Key_Up: return VK_UP;
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case Qt::Key_Down: return VK_DOWN;
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case Qt::Key_Left: return VK_LEFT;
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case Qt::Key_Right: return VK_RIGHT;
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case Qt::Key_PageUp: return VK_PRIOR;
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case Qt::Key_PageDown: return VK_NEXT;
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case Qt::Key_F1: return VK_F1;
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case Qt::Key_F2: return VK_F2;
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case Qt::Key_F3: return VK_F3;
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case Qt::Key_F4: return VK_F4;
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case Qt::Key_F5: return VK_F5;
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case Qt::Key_F6: return VK_F6;
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case Qt::Key_F7: return VK_F7;
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case Qt::Key_F8: return VK_F8;
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case Qt::Key_F9: return VK_F9;
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case Qt::Key_F10: return VK_F10;
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case Qt::Key_F11: return VK_F11;
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case Qt::Key_F12: return VK_F12;
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case Qt::Key_F13: return VK_F13;
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case Qt::Key_F14: return VK_F14;
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case Qt::Key_F15: return VK_F15;
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case Qt::Key_F16: return VK_F16;
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case Qt::Key_F17: return VK_F17;
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case Qt::Key_F18: return VK_F18;
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case Qt::Key_F19: return VK_F19;
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case Qt::Key_F20: return VK_F20;
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case Qt::Key_F21: return VK_F21;
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case Qt::Key_F22: return VK_F22;
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case Qt::Key_F23: return VK_F23;
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case Qt::Key_F24: return VK_F24;
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default:;
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}
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return key;
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}
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void HotkeyWrapper::unregister()
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{
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for (int i = 0; i < hotkeys.count(); i++)
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{
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HotkeyStruct const & hk = hotkeys.at( i );
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UnregisterHotKey( hwnd, hk.id );
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if ( hk.key2 && hk.key2 != hk.key )
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UnregisterHotKey( hwnd, hk.id+1 );
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}
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(static_cast<QHotkeyApplication*>(qApp))->unregisterWrapper(this);
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}
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#if IS_QT_5
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bool QHotkeyApplication::nativeEventFilter( const QByteArray & /*eventType*/, void * message, long * result )
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{
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MSG * msg = reinterpret_cast< MSG * >( message );
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if ( msg->message == WM_HOTKEY )
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{
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for (int i = 0; i < hotkeyWrappers.size(); i++)
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{
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if ( hotkeyWrappers.at(i)->winEvent( msg, result ) )
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return true;
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}
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}
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return false;
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}
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#else // IS_QT_5
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bool QHotkeyApplication::winEventFilter ( MSG * message, long * result )
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{
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if (message->message == WM_HOTKEY)
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{
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for (int i = 0; i < hotkeyWrappers.size(); i++)
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{
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if ( hotkeyWrappers.at(i)->winEvent( message, result ) )
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return true;
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}
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}
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return QApplication::winEventFilter( message, result );
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}
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#endif
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//////////////////////////////////////////////////////////////////////////
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#else
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//////////////////////////////////////////////////////////////////////////
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#include <X11/keysym.h>
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void HotkeyWrapper::init()
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{
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keyToUngrab = grabbedKeys.end();
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// We use RECORD extension instead of XGrabKey. That's because XGrabKey
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// prevents other clients from getting their input if it's grabbed.
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Display * display = QX11Info::display();
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lShiftCode = XKeysymToKeycode( display, XK_Shift_L );
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rShiftCode = XKeysymToKeycode( display, XK_Shift_R );
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lCtrlCode = XKeysymToKeycode( display, XK_Control_L );
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rCtrlCode = XKeysymToKeycode( display, XK_Control_R );
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lAltCode = XKeysymToKeycode( display, XK_Alt_L );
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rAltCode = XKeysymToKeycode( display, XK_Alt_R );
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lMetaCode = XKeysymToKeycode( display, XK_Super_L );
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rMetaCode = XKeysymToKeycode( display, XK_Super_R );
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cCode = XKeysymToKeycode( display, XK_c );
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insertCode = XKeysymToKeycode( display, XK_Insert );
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kpInsertCode = XKeysymToKeycode( display, XK_KP_Insert );
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currentModifiers = 0;
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// This one will be used to read the recorded content
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dataDisplay = XOpenDisplay( 0 );
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if ( !dataDisplay )
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throw exInit();
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recordRange = XRecordAllocRange();
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if ( !recordRange )
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{
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XCloseDisplay( dataDisplay );
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throw exInit();
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}
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recordRange->device_events.first = KeyPress;
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recordRange->device_events.last = KeyRelease;
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recordClientSpec = XRecordAllClients;
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recordContext = XRecordCreateContext( display, 0,
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&recordClientSpec, 1,
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&recordRange, 1 );
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if ( !recordContext )
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{
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XFree( recordRange );
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XCloseDisplay( dataDisplay );
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throw exInit();
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}
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// This is required to ensure context was indeed created
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XSync( display, False );
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connect( this, SIGNAL( keyRecorded( quint32, quint32 ) ),
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this, SLOT( checkState( quint32, quint32 ) ),
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Qt::QueuedConnection );
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start();
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}
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void HotkeyWrapper::run() // Runs in a separate thread
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{
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if ( !XRecordEnableContext( dataDisplay, recordContext,
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recordEventCallback,
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(XPointer) this ) )
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DPRINTF( "Failed to enable record context\n" );
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}
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void HotkeyWrapper::recordEventCallback( XPointer ptr, XRecordInterceptData * data )
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{
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((HotkeyWrapper * )ptr)->handleRecordEvent( data );
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}
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void HotkeyWrapper::handleRecordEvent( XRecordInterceptData * data )
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{
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if ( data->category == XRecordFromServer )
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{
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xEvent * event = ( xEvent * ) data->data;
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if ( event->u.u.type == KeyPress )
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{
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KeyCode key = event->u.u.detail;
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if ( key == lShiftCode ||
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key == rShiftCode )
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currentModifiers |= ShiftMask;
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else
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if ( key == lCtrlCode ||
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key == rCtrlCode )
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currentModifiers |= ControlMask;
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else
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if ( key == lAltCode ||
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key == rAltCode )
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currentModifiers |= Mod1Mask;
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else
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if ( key == lMetaCode ||
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key == rMetaCode )
|
|
currentModifiers |= Mod4Mask;
|
|
else
|
|
{
|
|
// Here we employ a kind of hack translating KP_Insert key
|
|
// to just Insert. This allows reacting to both Insert keys.
|
|
if ( key == kpInsertCode )
|
|
key = insertCode;
|
|
|
|
emit keyRecorded( key, currentModifiers );
|
|
}
|
|
}
|
|
else
|
|
if ( event->u.u.type == KeyRelease )
|
|
{
|
|
KeyCode key = event->u.u.detail;
|
|
|
|
if ( key == lShiftCode ||
|
|
key == rShiftCode )
|
|
currentModifiers &= ~ShiftMask;
|
|
else
|
|
if ( key == lCtrlCode ||
|
|
key == rCtrlCode )
|
|
currentModifiers &= ~ControlMask;
|
|
else
|
|
if ( key == lAltCode ||
|
|
key == rAltCode )
|
|
currentModifiers &= ~Mod1Mask;
|
|
else
|
|
if ( key == lMetaCode ||
|
|
key == rMetaCode )
|
|
currentModifiers &= ~Mod4Mask;
|
|
}
|
|
}
|
|
|
|
XRecordFreeData( data );
|
|
}
|
|
|
|
bool HotkeyWrapper::setGlobalKey( int key, int key2,
|
|
Qt::KeyboardModifiers modifier, int handle )
|
|
{
|
|
if ( !key )
|
|
return false; // We don't monitor empty combinations
|
|
|
|
int vk = nativeKey( key );
|
|
int vk2 = key2 ? nativeKey( key2 ) : 0;
|
|
|
|
quint32 mod = 0;
|
|
if (modifier & Qt::ShiftModifier)
|
|
mod |= ShiftMask;
|
|
if (modifier & Qt::ControlModifier)
|
|
mod |= ControlMask;
|
|
if (modifier & Qt::AltModifier)
|
|
mod |= Mod1Mask;
|
|
if (modifier & Qt::MetaModifier)
|
|
mod |= Mod4Mask;
|
|
|
|
hotkeys.append( HotkeyStruct( vk, vk2, mod, handle, 0 ) );
|
|
|
|
if ( !isCopyToClipboardKey( vk, mod ) )
|
|
grabKey( vk, mod ); // Make sure it doesn't get caught by other apps
|
|
|
|
return true;
|
|
}
|
|
|
|
bool HotkeyWrapper::isCopyToClipboardKey( quint32 keyCode, quint32 modifiers ) const
|
|
{
|
|
return modifiers == ControlMask &&
|
|
( keyCode == cCode || keyCode == insertCode || keyCode == kpInsertCode );
|
|
}
|
|
|
|
bool HotkeyWrapper::isKeyGrabbed( quint32 keyCode, quint32 modifiers ) const
|
|
{
|
|
GrabbedKeys::const_iterator i = grabbedKeys.find( std::make_pair( keyCode, modifiers ) );
|
|
|
|
return i != grabbedKeys.end();
|
|
}
|
|
|
|
namespace {
|
|
|
|
typedef int (*X11ErrorHandler) ( Display * display, XErrorEvent * event );
|
|
|
|
class X11GrabUngrabErrorHandler {
|
|
public:
|
|
static bool error;
|
|
|
|
static int grab_ungrab_error_handler( Display *, XErrorEvent * event )
|
|
{
|
|
qDebug() << "grab_ungrab_error_handler is invoked";
|
|
switch ( event->error_code )
|
|
{
|
|
case BadAccess:
|
|
case BadValue:
|
|
case BadWindow:
|
|
if ( event->request_code == 33 /* X_GrabKey */ ||
|
|
event->request_code == 34 /* X_UngrabKey */)
|
|
{
|
|
error = true;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
X11GrabUngrabErrorHandler()
|
|
{
|
|
error = false;
|
|
previousErrorHandler_ = XSetErrorHandler( grab_ungrab_error_handler );
|
|
}
|
|
|
|
~X11GrabUngrabErrorHandler()
|
|
{
|
|
XFlush( QX11Info::display() );
|
|
(void) XSetErrorHandler( previousErrorHandler_ );
|
|
}
|
|
|
|
bool isError() const
|
|
{
|
|
XFlush( QX11Info::display() );
|
|
return error;
|
|
}
|
|
|
|
private:
|
|
X11ErrorHandler previousErrorHandler_;
|
|
};
|
|
|
|
bool X11GrabUngrabErrorHandler::error = false;
|
|
|
|
} // anonymous namespace
|
|
|
|
|
|
HotkeyWrapper::GrabbedKeys::iterator HotkeyWrapper::grabKey( quint32 keyCode,
|
|
quint32 modifiers )
|
|
{
|
|
std::pair< GrabbedKeys::iterator, bool > result =
|
|
grabbedKeys.insert( std::make_pair( keyCode, modifiers ) );
|
|
|
|
|
|
if ( result.second )
|
|
{
|
|
X11GrabUngrabErrorHandler errorHandler;
|
|
XGrabKey( QX11Info::display(), keyCode, modifiers, QX11Info::appRootWindow(),
|
|
True, GrabModeAsync, GrabModeAsync );
|
|
|
|
if ( errorHandler.isError() )
|
|
{
|
|
qDebug() << "Warning: Possible hotkeys conflict. Check your hotkeys options.";
|
|
ungrabKey( result.first );
|
|
}
|
|
}
|
|
|
|
return result.first;
|
|
}
|
|
|
|
void HotkeyWrapper::ungrabKey( GrabbedKeys::iterator i )
|
|
{
|
|
X11GrabUngrabErrorHandler errorHandler;
|
|
XUngrabKey( QX11Info::display(), i->first, i->second, QX11Info::appRootWindow() );
|
|
|
|
grabbedKeys.erase( i );
|
|
|
|
if ( errorHandler.isError() )
|
|
{
|
|
qDebug() << "Warning: Cannot ungrab the hotkey";
|
|
}
|
|
}
|
|
|
|
quint32 HotkeyWrapper::nativeKey(int key)
|
|
{
|
|
QString keySymName;
|
|
|
|
switch( key )
|
|
{
|
|
case Qt::Key_Insert:
|
|
keySymName = "Insert";
|
|
break;
|
|
default:
|
|
keySymName = QKeySequence( key ).toString();
|
|
break;
|
|
}
|
|
|
|
Display * display = QX11Info::display();
|
|
return XKeysymToKeycode( display, XStringToKeysym( keySymName.toLatin1().data() ) );
|
|
}
|
|
|
|
void HotkeyWrapper::unregister()
|
|
{
|
|
Display * display = QX11Info::display();
|
|
|
|
XRecordDisableContext( display, recordContext );
|
|
XSync( display, False );
|
|
|
|
wait();
|
|
|
|
XRecordFreeContext( display, recordContext );
|
|
XFree( recordRange );
|
|
XCloseDisplay( dataDisplay );
|
|
|
|
while( grabbedKeys.size() )
|
|
ungrabKey( grabbedKeys.begin() );
|
|
|
|
(static_cast<QHotkeyApplication*>(qApp))->unregisterWrapper(this);
|
|
}
|
|
|
|
#endif
|
|
#endif
|