gecko-dev/widget/windows/WinMouseScrollHandler.cpp

771 lines
24 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif // MOZ_LOGGING
#include "prlog.h"
#include "WinMouseScrollHandler.h"
#include "nsWindow.h"
#include "WinUtils.h"
#include "mozilla/Preferences.h"
#include <psapi.h>
namespace mozilla {
namespace widget {
#ifdef PR_LOGGING
PRLogModuleInfo* gMouseScrollLog = nsnull;
static const char* GetBoolName(bool aBool)
{
return aBool ? "TRUE" : "FALSE";
}
static void LogKeyStateImpl()
{
if (!PR_LOG_TEST(gMouseScrollLog, PR_LOG_DEBUG)) {
return;
}
BYTE keyboardState[256];
if (::GetKeyboardState(keyboardState)) {
for (size_t i = 0; i < ArrayLength(keyboardState); i++) {
if (keyboardState[i]) {
PR_LOG(gMouseScrollLog, PR_LOG_DEBUG,
(" Current key state: keyboardState[0x%02X]=0x%02X (%s)",
i, keyboardState[i],
((keyboardState[i] & 0x81) == 0x81) ? "Pressed and Toggled" :
(keyboardState[i] & 0x80) ? "Pressed" :
(keyboardState[i] & 0x01) ? "Toggled" : "Unknown"));
}
}
} else {
PR_LOG(gMouseScrollLog, PR_LOG_DEBUG,
("MouseScroll::Device::Elantech::HandleKeyMessage(): Failed to print "
"current keyboard state"));
}
}
#define LOG_KEYSTATE() LogKeyStateImpl()
#else // PR_LOGGING
#define LOG_KEYSTATE()
#endif
MouseScrollHandler* MouseScrollHandler::sInstance = nsnull;
bool MouseScrollHandler::Device::sFakeScrollableWindowNeeded = false;
bool MouseScrollHandler::Device::Elantech::sUseSwipeHack = false;
bool MouseScrollHandler::Device::Elantech::sUsePinchHack = false;
DWORD MouseScrollHandler::Device::Elantech::sZoomUntil = 0;
// The duration until timeout of events transaction. The value is 1.5 sec,
// it's just a magic number, it was suggested by Logitech's engineer, see
// bug 605648 comment 90.
#define DEFAULT_TIMEOUT_DURATION 1500
/******************************************************************************
*
* MouseScrollHandler
*
******************************************************************************/
/* static */
void
MouseScrollHandler::Initialize()
{
#ifdef PR_LOGGING
if (!gMouseScrollLog) {
gMouseScrollLog = PR_NewLogModule("MouseScrollHandlerWidgets");
}
#endif
Device::Init();
}
/* static */
void
MouseScrollHandler::Shutdown()
{
delete sInstance;
sInstance = nsnull;
}
/* static */
MouseScrollHandler*
MouseScrollHandler::GetInstance()
{
if (!sInstance) {
sInstance = new MouseScrollHandler();
}
return sInstance;
}
MouseScrollHandler::MouseScrollHandler()
{
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll: Creating an instance, this=%p, sInstance=%p",
this, sInstance));
}
MouseScrollHandler::~MouseScrollHandler()
{
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll: Destroying an instance, this=%p, sInstance=%p",
this, sInstance));
}
/* static */
bool
MouseScrollHandler::ProcessMessage(nsWindow* aWindow, UINT msg,
WPARAM wParam, LPARAM lParam,
LRESULT *aRetValue, bool &aEatMessage)
{
Device::Elantech::UpdateZoomUntil();
switch (msg) {
case WM_SETTINGCHANGE:
if (!sInstance) {
return false;
}
if (wParam == SPI_SETWHEELSCROLLLINES ||
wParam == SPI_SETWHEELSCROLLCHARS) {
sInstance->mSystemSettings.MarkDirty();
}
return false;
case WM_KEYDOWN:
case WM_KEYUP:
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::ProcessMessage(): aWindow=%p, "
"msg=%s(0x%04X), wParam=0x%02X, ::GetMessageTime()=%d",
aWindow, msg == WM_KEYDOWN ? "WM_KEYDOWN" :
msg == WM_KEYUP ? "WM_KEYUP" : "Unknown", msg, wParam,
::GetMessageTime()));
LOG_KEYSTATE();
if (Device::Elantech::HandleKeyMessage(aWindow, msg, wParam)) {
*aRetValue = 0;
aEatMessage = true;
return true;
}
return false;
default:
return false;
}
}
/* static */
bool
MouseScrollHandler::DispatchEvent(nsWindow* aWindow, nsGUIEvent& aEvent)
{
return aWindow->DispatchWindowEvent(&aEvent);
}
/* static */
nsModifierKeyState
MouseScrollHandler::GetModifierKeyState()
{
nsModifierKeyState result;
// Assume the Control key is down if the Elantech touchpad has sent the
// mis-ordered WM_KEYDOWN/WM_MOUSEWHEEL messages. (See the comment in
// MouseScrollHandler::Device::Elantech::HandleKeyMessage().)
if (!result.mIsControlDown) {
result.mIsControlDown = Device::Elantech::IsZooming();
}
return result;
}
/******************************************************************************
*
* EventInfo
*
******************************************************************************/
MouseScrollHandler::EventInfo::EventInfo(nsWindow* aWindow,
UINT aMessage,
WPARAM aWParam, LPARAM aLParam)
{
NS_ABORT_IF_FALSE(aMessage == WM_MOUSEWHEEL || aMessage == WM_MOUSEHWHEEL,
"EventInfo must be initialized with WM_MOUSEWHEEL or WM_MOUSEHWHEEL");
MouseScrollHandler::GetInstance()->mSystemSettings.Init();
mIsVertical = (aMessage == WM_MOUSEWHEEL);
mIsPage = MouseScrollHandler::sInstance->
mSystemSettings.IsPageScroll(mIsVertical);
mDelta = (short)HIWORD(aWParam);
mWnd = aWindow->GetWindowHandle();
mTimeStamp = TimeStamp::Now();
}
bool
MouseScrollHandler::EventInfo::CanDispatchMouseScrollEvent() const
{
if (!GetScrollAmount()) {
// XXX I think that we should dispatch mouse wheel events even if the
// operation will not scroll because the wheel operation really happened
// and web application may want to handle the event for non-scroll action.
return false;
}
return (mDelta != 0);
}
PRInt32
MouseScrollHandler::EventInfo::GetScrollAmount() const
{
if (mIsPage) {
return 1;
}
return MouseScrollHandler::sInstance->
mSystemSettings.GetScrollAmount(mIsVertical);
}
PRInt32
MouseScrollHandler::EventInfo::GetScrollFlags() const
{
PRInt32 result = mIsPage ? nsMouseScrollEvent::kIsFullPage : 0;
result |= mIsVertical ? nsMouseScrollEvent::kIsVertical :
nsMouseScrollEvent::kIsHorizontal;
return result;
}
/******************************************************************************
*
* LastEventInfo
*
******************************************************************************/
bool
MouseScrollHandler::LastEventInfo::CanContinueTransaction(
const EventInfo& aNewEvent)
{
return !mWnd ||
(mWnd == aNewEvent.GetWindowHandle() &&
IsPositive() == aNewEvent.IsPositive() &&
mIsVertical == aNewEvent.IsVertical() &&
mIsPage == aNewEvent.IsPage() &&
TimeStamp::Now() - mTimeStamp <=
TimeDuration::FromMilliseconds(DEFAULT_TIMEOUT_DURATION));
}
void
MouseScrollHandler::LastEventInfo::ResetTransaction()
{
if (!mWnd) {
return;
}
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::LastEventInfo::ResetTransaction()"));
mWnd = nsnull;
mRemainingDeltaForScroll = 0;
mRemainingDeltaForPixel = 0;
}
void
MouseScrollHandler::LastEventInfo::RecordEvent(const EventInfo& aEvent)
{
mWnd = aEvent.GetWindowHandle();
mDelta = aEvent.GetNativeDelta();
mIsVertical = aEvent.IsVertical();
mIsPage = aEvent.IsPage();
mTimeStamp = TimeStamp::Now();
}
/******************************************************************************
*
* SystemSettings
*
******************************************************************************/
void
MouseScrollHandler::SystemSettings::Init()
{
if (mInitialized) {
return;
}
mInitialized = true;
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &mScrollLines, 0)) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::SystemSettings::Init(): ::SystemParametersInfo("
"SPI_GETWHEELSCROLLLINES) failed"));
mScrollLines = 3;
} else if (mScrollLines > WHEEL_DELTA) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::SystemSettings::Init(): the result of "
"::SystemParametersInfo(SPI_GETWHEELSCROLLLINES) is too large: %d",
mScrollLines));
// sScrollLines usually equals 3 or 0 (for no scrolling)
// However, if sScrollLines > WHEEL_DELTA, we assume that
// the mouse driver wants a page scroll. The docs state that
// sScrollLines should explicitly equal WHEEL_PAGESCROLL, but
// since some mouse drivers use an arbitrary large number instead,
// we have to handle that as well.
mScrollLines = WHEEL_PAGESCROLL;
}
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS, 0, &mScrollChars, 0)) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::SystemSettings::Init(): ::SystemParametersInfo("
"SPI_GETWHEELSCROLLCHARS) failed, %s",
WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION ?
"this is unexpected on Vista or later" :
"but on XP or earlier, this is not a problem"));
mScrollChars = 1;
} else if (mScrollChars > WHEEL_DELTA) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::SystemSettings::Init(): the result of "
"::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS) is too large: %d",
mScrollChars));
// See the comments for the case mScrollLines > WHEEL_DELTA.
mScrollChars = WHEEL_PAGESCROLL;
}
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::SystemSettings::Init(): initialized, "
"mScrollLines=%d, mScrollChars=%d",
mScrollLines, mScrollChars));
}
void
MouseScrollHandler::SystemSettings::MarkDirty()
{
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScrollHandler::SystemSettings::MarkDirty(): "
"Marking SystemSettings dirty"));
mInitialized = false;
// When system settings are changed, we should reset current transaction.
MOZ_ASSERT(sInstance,
"Must not be called at initializing MouseScrollHandler");
MouseScrollHandler::sInstance->mLastEventInfo.ResetTransaction();
}
/******************************************************************************
*
* UserPrefs
*
******************************************************************************/
MouseScrollHandler::UserPrefs::UserPrefs() :
mInitialized(false)
{
// We need to reset mouse wheel transaction when all of mousewheel related
// prefs are changed.
DebugOnly<nsresult> rv =
Preferences::RegisterCallback(OnChange, "mousewheel.", this);
MOZ_ASSERT(NS_SUCCEEDED(rv),
"Failed to register callback for mousewheel.");
}
MouseScrollHandler::UserPrefs::~UserPrefs()
{
DebugOnly<nsresult> rv =
Preferences::UnregisterCallback(OnChange, "mousewheel.", this);
MOZ_ASSERT(NS_SUCCEEDED(rv),
"Failed to unregister callback for mousewheel.");
}
void
MouseScrollHandler::UserPrefs::Init()
{
if (mInitialized) {
return;
}
mInitialized = true;
mPixelScrollingEnabled =
Preferences::GetBool("mousewheel.enable_pixel_scrolling", true);
mScrollMessageHandledAsWheelMessage =
Preferences::GetBool("mousewheel.emulate_at_wm_scroll", false);
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::UserPrefs::Init(): initialized, "
"mPixelScrollingEnabled=%s, mScrollMessageHandledAsWheelMessage=%s",
GetBoolName(mPixelScrollingEnabled),
GetBoolName(mScrollMessageHandledAsWheelMessage)));
}
void
MouseScrollHandler::UserPrefs::MarkDirty()
{
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScrollHandler::UserPrefs::MarkDirty(): Marking UserPrefs dirty"));
mInitialized = false;
// When user prefs for mousewheel are changed, we should reset current
// transaction.
MOZ_ASSERT(sInstance,
"Must not be called at initializing MouseScrollHandler");
MouseScrollHandler::sInstance->mLastEventInfo.ResetTransaction();
}
/******************************************************************************
*
* Device
*
******************************************************************************/
/* static */
bool
MouseScrollHandler::Device::GetWorkaroundPref(const char* aPrefName,
bool aValueIfAutomatic)
{
if (!aPrefName) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::GetWorkaroundPref(): Failed, aPrefName is NULL"));
return aValueIfAutomatic;
}
PRInt32 lHackValue = 0;
if (NS_FAILED(Preferences::GetInt(aPrefName, &lHackValue))) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::GetWorkaroundPref(): Preferences::GetInt() failed,"
" aPrefName=\"%s\", aValueIfAutomatic=%s",
aPrefName, GetBoolName(aValueIfAutomatic)));
return aValueIfAutomatic;
}
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::GetWorkaroundPref(): Succeeded, "
"aPrefName=\"%s\", aValueIfAutomatic=%s, lHackValue=%d",
aPrefName, GetBoolName(aValueIfAutomatic), lHackValue));
switch (lHackValue) {
case 0: // disabled
return false;
case 1: // enabled
return true;
default: // -1: autodetect
return aValueIfAutomatic;
}
}
/* static */
void
MouseScrollHandler::Device::Init()
{
sFakeScrollableWindowNeeded =
GetWorkaroundPref("ui.trackpoint_hack.enabled",
(TrackPoint::IsDriverInstalled() ||
UltraNav::IsObsoleteDriverInstalled()));
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::Init(): sFakeScrollableWindowNeeded=%s",
GetBoolName(sFakeScrollableWindowNeeded)));
Elantech::Init();
}
/******************************************************************************
*
* Device::Elantech
*
******************************************************************************/
/* static */
void
MouseScrollHandler::Device::Elantech::Init()
{
PRInt32 version = GetDriverMajorVersion();
bool needsHack =
Device::GetWorkaroundPref("ui.elantech_gesture_hacks.enabled",
version != 0);
sUseSwipeHack = needsHack && version <= 7;
sUsePinchHack = needsHack && version <= 8;
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::Elantech::Init(): version=%d, sUseSwipeHack=%s, "
"sUsePinchHack=%s",
version, GetBoolName(sUseSwipeHack), GetBoolName(sUsePinchHack)));
}
/* static */
PRInt32
MouseScrollHandler::Device::Elantech::GetDriverMajorVersion()
{
PRUnichar buf[40];
// The driver version is found in one of these two registry keys.
bool foundKey =
WinUtils::GetRegistryKey(HKEY_CURRENT_USER,
L"Software\\Elantech\\MainOption",
L"DriverVersion",
buf, sizeof buf);
if (!foundKey) {
foundKey =
WinUtils::GetRegistryKey(HKEY_CURRENT_USER,
L"Software\\Elantech",
L"DriverVersion",
buf, sizeof buf);
}
if (!foundKey) {
return 0;
}
// Assume that the major version number can be found just after a space
// or at the start of the string.
for (PRUnichar* p = buf; *p; p++) {
if (*p >= L'0' && *p <= L'9' && (p == buf || *(p - 1) == L' ')) {
return wcstol(p, NULL, 10);
}
}
return 0;
}
/* static */
bool
MouseScrollHandler::Device::Elantech::IsHelperWindow(HWND aWnd)
{
// The helper window cannot be distinguished based on its window class, so we
// need to check if it is owned by the helper process, ETDCtrl.exe.
const PRUnichar* filenameSuffix = L"\\etdctrl.exe";
const int filenameSuffixLength = 12;
DWORD pid;
::GetWindowThreadProcessId(aWnd, &pid);
HANDLE hProcess = ::OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
if (!hProcess) {
return false;
}
bool result = false;
PRUnichar path[256] = {L'\0'};
if (::GetProcessImageFileNameW(hProcess, path, ArrayLength(path))) {
int pathLength = lstrlenW(path);
if (pathLength >= filenameSuffixLength) {
if (lstrcmpiW(path + pathLength - filenameSuffixLength,
filenameSuffix) == 0) {
result = true;
}
}
}
::CloseHandle(hProcess);
return result;
}
/* static */
bool
MouseScrollHandler::Device::Elantech::HandleKeyMessage(nsWindow* aWindow,
UINT aMsg,
WPARAM aWParam)
{
// The Elantech touchpad driver understands three-finger swipe left and
// right gestures, and translates them into Page Up and Page Down key
// events for most applications. For Firefox 3.6, it instead sends
// Alt+Left and Alt+Right to trigger browser back/forward actions. As
// with the Thinkpad Driver hack in nsWindow::Create, the change in
// HWND structure makes Firefox not trigger the driver's heuristics
// any longer.
//
// The Elantech driver actually sends these messages for a three-finger
// swipe right:
//
// WM_KEYDOWN virtual_key = 0xCC or 0xFF (depending on driver version)
// WM_KEYDOWN virtual_key = VK_NEXT
// WM_KEYUP virtual_key = VK_NEXT
// WM_KEYUP virtual_key = 0xCC or 0xFF
//
// so we use the 0xCC or 0xFF key modifier to detect whether the Page Down
// is due to the gesture rather than a regular Page Down keypress. We then
// pretend that we should dispatch "Go Forward" command. Similarly
// for VK_PRIOR and "Go Back" command.
if (sUseSwipeHack &&
(aWParam == VK_NEXT || aWParam == VK_PRIOR) &&
(IS_VK_DOWN(0xFF) || IS_VK_DOWN(0xCC))) {
if (aMsg == WM_KEYDOWN) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::Elantech::HandleKeyMessage(): Dispatching "
"%s command event",
aWParam == VK_NEXT ? "Forward" : "Back"));
nsCommandEvent commandEvent(true, nsGkAtoms::onAppCommand,
(aWParam == VK_NEXT) ? nsGkAtoms::Forward : nsGkAtoms::Back, aWindow);
aWindow->InitEvent(commandEvent);
MouseScrollHandler::DispatchEvent(aWindow, commandEvent);
}
#ifdef PR_LOGGING
else {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::Elantech::HandleKeyMessage(): Consumed"));
}
#endif
return true; // consume the message (doesn't need to dispatch key events)
}
// Version 8 of the Elantech touchpad driver sends these messages for
// zoom gestures:
//
// WM_KEYDOWN virtual_key = 0xCC time = 10
// WM_KEYDOWN virtual_key = VK_CONTROL time = 10
// WM_MOUSEWHEEL time = ::GetTickCount()
// WM_KEYUP virtual_key = VK_CONTROL time = 10
// WM_KEYUP virtual_key = 0xCC time = 10
//
// The result of this is that we process all of the WM_KEYDOWN/WM_KEYUP
// messages first because their timestamps make them appear to have
// been sent before the WM_MOUSEWHEEL message. To work around this,
// we store the current time when we process the WM_KEYUP message and
// assume that any WM_MOUSEWHEEL message with a timestamp before that
// time is one that should be processed as if the Control key was down.
if (sUsePinchHack && aMsg == WM_KEYUP &&
aWParam == VK_CONTROL && ::GetMessageTime() == 10) {
// We look only at the bottom 31 bits of the system tick count since
// GetMessageTime returns a LONG, which is signed, so we want values
// that are more easily comparable.
sZoomUntil = ::GetTickCount() & 0x7FFFFFFF;
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::Elantech::HandleKeyMessage(): sZoomUntil=%d",
sZoomUntil));
}
return false;
}
/* static */
void
MouseScrollHandler::Device::Elantech::UpdateZoomUntil()
{
if (!sZoomUntil) {
return;
}
// For the Elantech Touchpad Zoom Gesture Hack, we should check that the
// system time (32-bit milliseconds) hasn't wrapped around. Otherwise we
// might get into the situation where wheel events for the next 50 days of
// system uptime are assumed to be Ctrl+Wheel events. (It is unlikely that
// we would get into that state, because the system would already need to be
// up for 50 days and the Control key message would need to be processed just
// before the system time overflow and the wheel message just after.)
//
// We also take the chance to reset sZoomUntil if we simply have passed that
// time.
LONG msgTime = ::GetMessageTime();
if ((sZoomUntil >= 0x3fffffffu && DWORD(msgTime) < 0x40000000u) ||
(sZoomUntil < DWORD(msgTime))) {
sZoomUntil = 0;
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::Elantech::UpdateZoomUntil(): "
"sZoomUntil was reset"));
}
}
/* static */
bool
MouseScrollHandler::Device::Elantech::IsZooming()
{
// Assume the Control key is down if the Elantech touchpad has sent the
// mis-ordered WM_KEYDOWN/WM_MOUSEWHEEL messages. (See the comment in
// OnKeyUp.)
return (sZoomUntil && static_cast<DWORD>(::GetMessageTime()) < sZoomUntil);
}
/******************************************************************************
*
* Device::TrackPoint
*
******************************************************************************/
/* static */
bool
MouseScrollHandler::Device::TrackPoint::IsDriverInstalled()
{
if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
L"Software\\Lenovo\\TrackPoint")) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::TrackPoint::IsDriverInstalled(): "
"Lenovo's TrackPoint driver is found"));
return true;
}
if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
L"Software\\Alps\\Apoint\\TrackPoint")) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::TrackPoint::IsDriverInstalled(): "
"Alps's TrackPoint driver is found"));
}
return false;
}
/******************************************************************************
*
* Device::UltraNav
*
******************************************************************************/
/* static */
bool
MouseScrollHandler::Device::UltraNav::IsObsoleteDriverInstalled()
{
if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
L"Software\\Lenovo\\UltraNav")) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
"Lenovo's UltraNav driver is found"));
return true;
}
bool installed = false;
if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
L"Software\\Synaptics\\SynTPEnh\\UltraNavUSB")) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
"Synaptics's UltraNav (USB) driver is found"));
installed = true;
} else if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
L"Software\\Synaptics\\SynTPEnh\\UltraNavPS2")) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
"Synaptics's UltraNav (PS/2) driver is found"));
installed = true;
}
if (!installed) {
return false;
}
PRUnichar buf[40];
bool foundKey =
WinUtils::GetRegistryKey(HKEY_LOCAL_MACHINE,
L"Software\\Synaptics\\SynTP\\Install",
L"DriverVersion",
buf, sizeof buf);
if (!foundKey) {
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
"Failed to get UltraNav driver version"));
return false;
}
int majorVersion = wcstol(buf, NULL, 10);
int minorVersion = 0;
PRUnichar* p = wcschr(buf, L'.');
if (p) {
minorVersion = wcstol(p + 1, NULL, 10);
}
PR_LOG(gMouseScrollLog, PR_LOG_ALWAYS,
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
"found driver version = %d.%d",
majorVersion, minorVersion));
return majorVersion < 15 || majorVersion == 15 && minorVersion == 0;
}
} // namespace widget
} // namespace mozilla