forked from goldendict/goldendict
/
mouseover.cc
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mouseover.cc
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#include "mouseover.hh"
#include "utf8.hh"
#include <QCoreApplication>
#include <QDir>
#include <algorithm>
#ifdef Q_OS_WIN32
#undef WINVER
#define WINVER 0x0500
#include <sddl.h>
#include <accctrl.h>
#include <aclapi.h>
#include "mouseover_win32/ThTypes.h"
#include "wordbyauto.hh"
#include "x64.hh"
#endif
MouseOver & MouseOver::instance()
{
static MouseOver m;
return m;
}
#ifdef Q_OS_WIN32
const UINT WM_MY_SHOW_TRANSLATION = WM_USER + 301;
static wchar_t className[] = L"GoldenDictMouseover";
typedef BOOL WINAPI ( *ChangeWindowMessageFilterFunc )( UINT, DWORD );
#ifndef CHANGEFILTERSTRUCT
typedef struct tagCHANGEFILTERSTRUCT {
DWORD cbSize;
DWORD ExtStatus;
} CHANGEFILTERSTRUCT, *PCHANGEFILTERSTRUCT;
#endif
typedef BOOL WINAPI ( *ChangeWindowMessageFilterExFunc )( HWND, UINT, DWORD, PCHANGEFILTERSTRUCT );
#endif // Q_OS_WIN32
#ifdef Q_OS_WIN32
extern "C" BOOL WINAPI ConvertStringSecurityDescriptorToSecurityDescriptorW(
LPCWSTR StringSecurityDescriptor,
DWORD StringSDRevision,
PSECURITY_DESCRIPTOR *SecurityDescriptor,
PULONG SecurityDescriptorSize );
static void SetLowLabelToGDSynchroObjects()
{
// The LABEL_SECURITY_INFORMATION SDDL SACL to be set for low integrity
#define LOW_INTEGRITY_SDDL_SACL_W L"S:(ML;;NW;;;LW)"
DWORD dwErr = ERROR_SUCCESS;
PSECURITY_DESCRIPTOR pSD = NULL;
PACL pSacl = NULL; // not allocated
BOOL fSaclPresent = FALSE;
BOOL fSaclDefaulted = FALSE;
LPCWSTR pwszMapFileName = L"GoldenDictTextOutHookSharedMem";
LPCWSTR pwszSpyMutexName = L"GoldenDictTextOutSpyMutex";
if( ConvertStringSecurityDescriptorToSecurityDescriptorW( LOW_INTEGRITY_SDDL_SACL_W, 1 /* SDDL_REVISION_1 */, &pSD, NULL ) )
{
if( GetSecurityDescriptorSacl(pSD, &fSaclPresent, &pSacl, &fSaclDefaulted))
{
// Note that psidOwner, psidGroup, and pDacl are
// all NULL and set the new LABEL_SECURITY_INFORMATION
dwErr = SetNamedSecurityInfoW( (LPWSTR)pwszMapFileName,
SE_KERNEL_OBJECT, LABEL_SECURITY_INFORMATION, NULL, NULL, NULL, pSacl);
dwErr = SetNamedSecurityInfoW( (LPWSTR)pwszSpyMutexName,
SE_KERNEL_OBJECT, LABEL_SECURITY_INFORMATION, NULL, NULL, NULL, pSacl);
}
LocalFree(pSD);
}
}
#endif // Q_OS_WIN32
MouseOver::MouseOver() :
pPref(NULL)
{
#ifdef Q_OS_WIN32
HMODULE hm;
ChangeWindowMessageFilterFunc changeWindowMessageFilterFunc = NULL;
ChangeWindowMessageFilterExFunc changeWindowMessageFilterExFunc = NULL;
mouseOverEnabled = false;
ThTypes_Init();
memset( GlobalData, 0, sizeof( TGlobalDLLData ) );
// strcpy( GlobalData->LibName,
// QDir::toNativeSeparators( QDir( QCoreApplication::applicationDirPath() ).filePath( "GdTextOutHook.dll" ) ).toLocal8Bit().data() );
QDir::toNativeSeparators( QDir( QCoreApplication::applicationDirPath() ).filePath( "GdTextOutHook.dll" ) ).toWCharArray( GlobalData->LibName );
// Create the window to recive spying results to
WNDCLASSEX wcex;
wcex.cbSize = sizeof( WNDCLASSEX );
wcex.style = 0;
wcex.lpfnWndProc = ( WNDPROC ) eventHandler;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = GetModuleHandle( 0 );
wcex.hIcon = NULL;
wcex.hCursor = NULL,
wcex.hbrBackground = NULL;
wcex.lpszMenuName = NULL;
wcex.lpszClassName = className;
wcex.hIconSm = NULL;
RegisterClassEx( &wcex );
GlobalData->ServerWND = CreateWindow( className, L"", 0, 0, 0, 0, 0, GetDesktopWindow(), NULL, GetModuleHandle( 0 ), 0 );
spyDll = LoadLibrary( QDir::toNativeSeparators( QDir( QCoreApplication::applicationDirPath() ).filePath( "GdTextOutSpy.dll" ) ).toStdWString().c_str() );
if ( spyDll )
activateSpyFn = ( ActivateSpyFn ) GetProcAddress( spyDll, "ActivateTextOutSpying" );
// Allow messages from low intehrity process - for Vista and Win7
hm = GetModuleHandle( __TEXT("user32.dll"));
if ( hm != NULL ) {
changeWindowMessageFilterExFunc = (ChangeWindowMessageFilterExFunc)GetProcAddress( hm, "ChangeWindowMessageFilterEx" );
if( changeWindowMessageFilterExFunc ) {
CHANGEFILTERSTRUCT cfs = { sizeof( CHANGEFILTERSTRUCT ), 0 };
changeWindowMessageFilterExFunc( GlobalData->ServerWND, WM_MY_SHOW_TRANSLATION, 1 /* MSGFLT_ALLOW */, &cfs );
} else {
changeWindowMessageFilterFunc = (ChangeWindowMessageFilterFunc)GetProcAddress( hm, "ChangeWindowMessageFilter" );
if( changeWindowMessageFilterFunc )
changeWindowMessageFilterFunc( WM_MY_SHOW_TRANSLATION, 1 /* MSGFLT_ADD */ );
}
}
//Allow object access from low intehrity process - for Vista and Win7
SetLowLabelToGDSynchroObjects();
#endif
}
void MouseOver::enableMouseOver()
{
#ifdef Q_OS_WIN32
if ( !mouseOverEnabled && activateSpyFn )
{
activateSpyFn( true );
installx64Hooks();
mouseOverEnabled = true;
}
#endif
}
void MouseOver::disableMouseOver()
{
#ifdef Q_OS_WIN32
if ( mouseOverEnabled && activateSpyFn )
{
activateSpyFn( false );
removex64Hooks();
mouseOverEnabled = false;
}
#endif
}
#ifdef Q_OS_WIN32
LRESULT MouseOver::makeScanBitMask()
{
LRESULT res = 0;
if( pPref == NULL )
return 0;
if( !pPref->enableScanPopupModifiers || checkModifiersPressed( pPref->scanPopupModifiers ) ) {
res = GD_FLAG_METHOD_STANDARD;
if( pPref->scanPopupUseUIAutomation !=0 )
res |= GD_FLAG_METHOD_UI_AUTOMATION;
if( pPref->scanPopupUseIAccessibleEx !=0 )
res |= GD_FLAG_METHOD_IACCESSIBLEEX;
if( pPref->scanPopupUseGDMessage !=0 )
res |= GD_FLAG_METHOD_GD_MESSAGE;
}
return res;
}
LRESULT CALLBACK MouseOver::eventHandler( HWND hwnd, UINT msg,
WPARAM wparam, LPARAM lparam )
{
if ( msg == WM_MY_SHOW_TRANSLATION )
{
LRESULT res = instance().makeScanBitMask();
if( res == 0 )
return 0; // Don't handle word without necessity
if( wparam != 0) //Ask for methods of word retrieving
return res;
int wordSeqPos = 0;
QString wordSeq;
if( GlobalData->CurMod.WordLen == 0)
{
if( ( res & GD_FLAG_METHOD_UI_AUTOMATION ) == 0 )
return 0;
POINT pt = GlobalData->CurMod.Pt;
WCHAR *pwstr = gdGetWordAtPointByAutomation( pt );
if( pwstr == NULL ) return 0;
wordSeq = QString::fromWCharArray( pwstr );
}
else
{
// Is the string in utf8 or in locale encoding?
gd::wchar testBuf[ 256 ];
long result = Utf8::decode( GlobalData->CurMod.MatchedWord,
strlen( GlobalData->CurMod.MatchedWord ),
testBuf );
if ( result >= 0 )
{
// It seems to be
QString begin = QString::fromUtf8( GlobalData->CurMod.MatchedWord,
GlobalData->CurMod.BeginPos ).normalized( QString::NormalizationForm_C );
QString end = QString::fromUtf8( GlobalData->CurMod.MatchedWord +
GlobalData->CurMod.BeginPos ).normalized( QString::NormalizationForm_C );
wordSeq = begin + end;
wordSeqPos = begin.size();
}
else
{
// It's not, so interpret it as in local encoding
QString begin = QString::fromLocal8Bit( GlobalData->CurMod.MatchedWord,
GlobalData->CurMod.BeginPos ).normalized( QString::NormalizationForm_C );
QString end = QString::fromLocal8Bit( GlobalData->CurMod.MatchedWord +
GlobalData->CurMod.BeginPos ).normalized( QString::NormalizationForm_C );
wordSeq = begin + end;
wordSeqPos = begin.size();
}
}
// Now locate the word inside the sequence
QString word;
if ( wordSeq[ wordSeqPos ].isSpace() )
{
// Currently we ignore such cases
return 0;
}
else
if ( !wordSeq[ wordSeqPos ].isLetterOrNumber() )
{
// Special case: the cursor points to something which doesn't look like a
// middle of the word -- assume that it's something that joins two words
// together.
int begin = wordSeqPos;
for( ; begin; --begin )
if ( !wordSeq[ begin - 1 ].isLetterOrNumber() )
break;
int end = wordSeqPos;
while( ++end < wordSeq.size() )
if ( !wordSeq[ end ].isLetterOrNumber() )
break;
if ( end - begin == 1 )
{
// Well, turns out it was just a single non-letter char, discard it
return 0;
}
word = wordSeq.mid( begin, end - begin );
}
else
{
// Cursor points to a letter -- cut the word it points to
int begin = wordSeqPos;
for( ; begin; --begin )
if ( !wordSeq[ begin - 1 ].isLetterOrNumber() )
break;
int end = wordSeqPos;
while( ++end < wordSeq.size() )
{
if ( !wordSeq[ end ].isLetterOrNumber() )
break;
}
word = wordSeq.mid( begin, end - begin );
}
// See if we have an RTL char. Reverse the whole string if we do.
for( int x = 0; x < word.size(); ++x )
{
QChar::Direction d = word[ x ].direction();
if ( d == QChar::DirR || d == QChar::DirAL ||
d == QChar::DirRLE || d == QChar::DirRLO )
{
std::reverse( word.begin(), word.end() );
break;
}
}
emit instance().hovered( word );
return 0;
}
return DefWindowProc( hwnd, msg, wparam, lparam );
}
#endif
MouseOver::~MouseOver()
{
#ifdef Q_OS_WIN32
disableMouseOver();
FreeLibrary( spyDll );
DestroyWindow( GlobalData->ServerWND );
UnregisterClass( className, GetModuleHandle( 0 ) );
ThTypes_End();
#endif
}