1754 lines
58 KiB
C++
1754 lines
58 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/DebugOnly.h"
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#include "mozilla/Logging.h"
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#include "WinMouseScrollHandler.h"
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#include "nsWindow.h"
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#include "nsWindowDefs.h"
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#include "KeyboardLayout.h"
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#include "WinUtils.h"
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#include "nsGkAtoms.h"
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#include "nsIDOMWindowUtils.h"
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#include "nsIDOMWheelEvent.h"
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#include "mozilla/MiscEvents.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/WindowsVersion.h"
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#include <psapi.h>
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namespace mozilla {
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namespace widget {
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PRLogModuleInfo* gMouseScrollLog = nullptr;
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static const char* GetBoolName(bool aBool)
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{
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return aBool ? "TRUE" : "FALSE";
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}
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static void LogKeyStateImpl()
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{
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if (!MOZ_LOG_TEST(gMouseScrollLog, LogLevel::Debug)) {
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return;
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}
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BYTE keyboardState[256];
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if (::GetKeyboardState(keyboardState)) {
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for (size_t i = 0; i < ArrayLength(keyboardState); i++) {
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if (keyboardState[i]) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Debug,
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(" Current key state: keyboardState[0x%02X]=0x%02X (%s)",
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i, keyboardState[i],
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((keyboardState[i] & 0x81) == 0x81) ? "Pressed and Toggled" :
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(keyboardState[i] & 0x80) ? "Pressed" :
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(keyboardState[i] & 0x01) ? "Toggled" : "Unknown"));
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}
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}
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} else {
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MOZ_LOG(gMouseScrollLog, LogLevel::Debug,
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("MouseScroll::Device::Elantech::HandleKeyMessage(): Failed to print "
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"current keyboard state"));
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}
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}
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#define LOG_KEYSTATE() LogKeyStateImpl()
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MouseScrollHandler* MouseScrollHandler::sInstance = nullptr;
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bool MouseScrollHandler::Device::sFakeScrollableWindowNeeded = false;
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bool MouseScrollHandler::Device::SynTP::sInitialized = false;
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int32_t MouseScrollHandler::Device::SynTP::sMajorVersion = 0;
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int32_t MouseScrollHandler::Device::SynTP::sMinorVersion = -1;
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bool MouseScrollHandler::Device::Elantech::sUseSwipeHack = false;
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bool MouseScrollHandler::Device::Elantech::sUsePinchHack = false;
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DWORD MouseScrollHandler::Device::Elantech::sZoomUntil = 0;
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bool MouseScrollHandler::Device::Apoint::sInitialized = false;
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int32_t MouseScrollHandler::Device::Apoint::sMajorVersion = 0;
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int32_t MouseScrollHandler::Device::Apoint::sMinorVersion = -1;
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bool MouseScrollHandler::Device::SetPoint::sMightBeUsing = false;
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// The duration until timeout of events transaction. The value is 1.5 sec,
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// it's just a magic number, it was suggested by Logitech's engineer, see
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// bug 605648 comment 90.
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#define DEFAULT_TIMEOUT_DURATION 1500
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/******************************************************************************
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*
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* MouseScrollHandler
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*
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******************************************************************************/
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/* static */
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POINTS
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MouseScrollHandler::GetCurrentMessagePos()
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{
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if (SynthesizingEvent::IsSynthesizing()) {
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return sInstance->mSynthesizingEvent->GetCursorPoint();
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}
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DWORD pos = ::GetMessagePos();
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return MAKEPOINTS(pos);
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}
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// Get rid of the GetMessagePos() API.
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#define GetMessagePos()
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/* static */
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void
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MouseScrollHandler::Initialize()
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{
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if (!gMouseScrollLog) {
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gMouseScrollLog = PR_NewLogModule("MouseScrollHandlerWidgets");
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}
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Device::Init();
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}
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/* static */
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void
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MouseScrollHandler::Shutdown()
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{
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delete sInstance;
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sInstance = nullptr;
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}
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/* static */
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MouseScrollHandler*
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MouseScrollHandler::GetInstance()
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{
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if (!sInstance) {
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sInstance = new MouseScrollHandler();
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}
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return sInstance;
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}
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MouseScrollHandler::MouseScrollHandler() :
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mIsWaitingInternalMessage(false),
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mSynthesizingEvent(nullptr)
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{
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll: Creating an instance, this=%p, sInstance=%p",
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this, sInstance));
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}
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MouseScrollHandler::~MouseScrollHandler()
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{
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll: Destroying an instance, this=%p, sInstance=%p",
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this, sInstance));
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delete mSynthesizingEvent;
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}
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/* static */
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bool
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MouseScrollHandler::NeedsMessage(UINT aMsg)
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{
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switch (aMsg) {
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case WM_SETTINGCHANGE:
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case WM_MOUSEWHEEL:
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case WM_MOUSEHWHEEL:
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case WM_HSCROLL:
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case WM_VSCROLL:
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case MOZ_WM_MOUSEVWHEEL:
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case MOZ_WM_MOUSEHWHEEL:
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case MOZ_WM_HSCROLL:
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case MOZ_WM_VSCROLL:
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case WM_KEYDOWN:
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case WM_KEYUP:
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return true;
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}
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return false;
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}
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/* static */
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bool
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MouseScrollHandler::ProcessMessage(nsWindowBase* aWidget, UINT msg,
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WPARAM wParam, LPARAM lParam,
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MSGResult& aResult)
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{
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Device::Elantech::UpdateZoomUntil();
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switch (msg) {
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case WM_SETTINGCHANGE:
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if (!sInstance) {
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return false;
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}
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if (wParam == SPI_SETWHEELSCROLLLINES ||
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wParam == SPI_SETWHEELSCROLLCHARS) {
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sInstance->mSystemSettings.MarkDirty();
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}
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return false;
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case WM_MOUSEWHEEL:
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case WM_MOUSEHWHEEL:
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GetInstance()->
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ProcessNativeMouseWheelMessage(aWidget, msg, wParam, lParam);
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sInstance->mSynthesizingEvent->NotifyNativeMessageHandlingFinished();
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// We don't need to call next wndproc for WM_MOUSEWHEEL and
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// WM_MOUSEHWHEEL. We should consume them always. If the messages
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// would be handled by our window again, it caused making infinite
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// message loop.
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aResult.mConsumed = true;
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aResult.mResult = (msg != WM_MOUSEHWHEEL);
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return true;
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case WM_HSCROLL:
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case WM_VSCROLL:
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aResult.mConsumed =
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GetInstance()->ProcessNativeScrollMessage(aWidget, msg, wParam, lParam);
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sInstance->mSynthesizingEvent->NotifyNativeMessageHandlingFinished();
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aResult.mResult = 0;
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return true;
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case MOZ_WM_MOUSEVWHEEL:
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case MOZ_WM_MOUSEHWHEEL:
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GetInstance()->HandleMouseWheelMessage(aWidget, msg, wParam, lParam);
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sInstance->mSynthesizingEvent->NotifyInternalMessageHandlingFinished();
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// Doesn't need to call next wndproc for internal wheel message.
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aResult.mConsumed = true;
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return true;
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case MOZ_WM_HSCROLL:
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case MOZ_WM_VSCROLL:
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GetInstance()->
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HandleScrollMessageAsMouseWheelMessage(aWidget, msg, wParam, lParam);
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sInstance->mSynthesizingEvent->NotifyInternalMessageHandlingFinished();
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// Doesn't need to call next wndproc for internal scroll message.
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aResult.mConsumed = true;
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return true;
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case WM_KEYDOWN:
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case WM_KEYUP:
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessMessage(): aWidget=%p, "
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"msg=%s(0x%04X), wParam=0x%02X, ::GetMessageTime()=%d",
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aWidget, msg == WM_KEYDOWN ? "WM_KEYDOWN" :
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msg == WM_KEYUP ? "WM_KEYUP" : "Unknown", msg, wParam,
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::GetMessageTime()));
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LOG_KEYSTATE();
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if (Device::Elantech::HandleKeyMessage(aWidget, msg, wParam)) {
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aResult.mResult = 0;
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aResult.mConsumed = true;
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return true;
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}
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return false;
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default:
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return false;
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}
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}
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/* static */
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nsresult
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MouseScrollHandler::SynthesizeNativeMouseScrollEvent(nsWindowBase* aWidget,
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const LayoutDeviceIntPoint& aPoint,
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uint32_t aNativeMessage,
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int32_t aDelta,
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uint32_t aModifierFlags,
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uint32_t aAdditionalFlags)
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{
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bool useFocusedWindow =
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!(aAdditionalFlags & nsIDOMWindowUtils::MOUSESCROLL_PREFER_WIDGET_AT_POINT);
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POINT pt;
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pt.x = aPoint.x;
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pt.y = aPoint.y;
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HWND target = useFocusedWindow ? ::WindowFromPoint(pt) : ::GetFocus();
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NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
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WPARAM wParam = 0;
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LPARAM lParam = 0;
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switch (aNativeMessage) {
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case WM_MOUSEWHEEL:
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case WM_MOUSEHWHEEL: {
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lParam = MAKELPARAM(pt.x, pt.y);
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WORD mod = 0;
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if (aModifierFlags & (nsIWidget::CTRL_L | nsIWidget::CTRL_R)) {
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mod |= MK_CONTROL;
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}
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if (aModifierFlags & (nsIWidget::SHIFT_L | nsIWidget::SHIFT_R)) {
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mod |= MK_SHIFT;
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}
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wParam = MAKEWPARAM(mod, aDelta);
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break;
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}
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case WM_VSCROLL:
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case WM_HSCROLL:
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lParam = (aAdditionalFlags &
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nsIDOMWindowUtils::MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL) ?
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reinterpret_cast<LPARAM>(target) : 0;
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wParam = aDelta;
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break;
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default:
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return NS_ERROR_INVALID_ARG;
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}
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// Ensure to make the instance.
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GetInstance();
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BYTE kbdState[256];
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memset(kbdState, 0, sizeof(kbdState));
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nsAutoTArray<KeyPair,10> keySequence;
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WinUtils::SetupKeyModifiersSequence(&keySequence, aModifierFlags);
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for (uint32_t i = 0; i < keySequence.Length(); ++i) {
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uint8_t key = keySequence[i].mGeneral;
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uint8_t keySpecific = keySequence[i].mSpecific;
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kbdState[key] = 0x81; // key is down and toggled on if appropriate
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if (keySpecific) {
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kbdState[keySpecific] = 0x81;
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}
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}
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if (!sInstance->mSynthesizingEvent) {
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sInstance->mSynthesizingEvent = new SynthesizingEvent();
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}
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POINTS pts;
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pts.x = static_cast<SHORT>(pt.x);
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pts.y = static_cast<SHORT>(pt.y);
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return sInstance->mSynthesizingEvent->
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Synthesize(pts, target, aNativeMessage, wParam, lParam, kbdState);
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}
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/* static */
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void
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MouseScrollHandler::InitEvent(nsWindowBase* aWidget,
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WidgetGUIEvent& aEvent,
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LayoutDeviceIntPoint* aPoint)
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{
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NS_ENSURE_TRUE_VOID(aWidget);
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LayoutDeviceIntPoint point;
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if (aPoint) {
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point = *aPoint;
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} else {
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POINTS pts = GetCurrentMessagePos();
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POINT pt;
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pt.x = pts.x;
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pt.y = pts.y;
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::ScreenToClient(aWidget->GetWindowHandle(), &pt);
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point.x = pt.x;
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point.y = pt.y;
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}
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aWidget->InitEvent(aEvent, &point);
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}
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/* static */
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ModifierKeyState
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MouseScrollHandler::GetModifierKeyState(UINT aMessage)
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{
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ModifierKeyState result;
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// Assume the Control key is down if the Elantech touchpad has sent the
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// mis-ordered WM_KEYDOWN/WM_MOUSEWHEEL messages. (See the comment in
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// MouseScrollHandler::Device::Elantech::HandleKeyMessage().)
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if ((aMessage == MOZ_WM_MOUSEVWHEEL || aMessage == WM_MOUSEWHEEL) &&
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!result.IsControl() && Device::Elantech::IsZooming()) {
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result.Set(MODIFIER_CONTROL);
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}
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return result;
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}
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POINT
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MouseScrollHandler::ComputeMessagePos(UINT aMessage,
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WPARAM aWParam,
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LPARAM aLParam)
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{
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POINT point;
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if (Device::SetPoint::IsGetMessagePosResponseValid(aMessage,
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aWParam, aLParam)) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ComputeMessagePos: Using ::GetCursorPos()"));
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::GetCursorPos(&point);
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} else {
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POINTS pts = GetCurrentMessagePos();
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point.x = pts.x;
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point.y = pts.y;
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}
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return point;
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}
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void
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MouseScrollHandler::ProcessNativeMouseWheelMessage(nsWindowBase* aWidget,
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UINT aMessage,
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WPARAM aWParam,
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LPARAM aLParam)
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{
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if (SynthesizingEvent::IsSynthesizing()) {
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mSynthesizingEvent->NativeMessageReceived(aWidget, aMessage,
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aWParam, aLParam);
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}
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POINT point = ComputeMessagePos(aMessage, aWParam, aLParam);
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: aWidget=%p, "
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"aMessage=%s, wParam=0x%08X, lParam=0x%08X, point: { x=%d, y=%d }",
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aWidget, aMessage == WM_MOUSEWHEEL ? "WM_MOUSEWHEEL" :
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aMessage == WM_MOUSEHWHEEL ? "WM_MOUSEHWHEEL" :
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aMessage == WM_VSCROLL ? "WM_VSCROLL" : "WM_HSCROLL",
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aWParam, aLParam, point.x, point.y));
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LOG_KEYSTATE();
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HWND underCursorWnd = ::WindowFromPoint(point);
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if (!underCursorWnd) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: "
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"No window is not found under the cursor"));
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return;
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}
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if (Device::Elantech::IsPinchHackNeeded() &&
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Device::Elantech::IsHelperWindow(underCursorWnd)) {
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// The Elantech driver places a window right underneath the cursor
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// when sending a WM_MOUSEWHEEL event to us as part of a pinch-to-zoom
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// gesture. We detect that here, and search for our window that would
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// be beneath the cursor if that window wasn't there.
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underCursorWnd = WinUtils::FindOurWindowAtPoint(point);
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if (!underCursorWnd) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: "
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"Our window is not found under the Elantech helper window"));
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return;
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}
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}
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// Handle most cases first. If the window under mouse cursor is our window
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// except plugin window (MozillaWindowClass), we should handle the message
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// on the window.
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if (WinUtils::IsOurProcessWindow(underCursorWnd)) {
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nsWindowBase* destWindow = WinUtils::GetNSWindowBasePtr(underCursorWnd);
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if (!destWindow) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: "
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"Found window under the cursor isn't managed by nsWindow..."));
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HWND wnd = ::GetParent(underCursorWnd);
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for (; wnd; wnd = ::GetParent(wnd)) {
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destWindow = WinUtils::GetNSWindowBasePtr(wnd);
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if (destWindow) {
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break;
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}
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}
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if (!wnd) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: Our window which is "
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"managed by nsWindow is not found under the cursor"));
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return;
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}
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}
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MOZ_ASSERT(destWindow, "destWindow must not be NULL");
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// If the found window is our plugin window, it means that the message
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// has been handled by the plugin but not consumed. We should handle the
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// message on its parent window. However, note that the DOM event may
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// cause accessing the plugin. Therefore, we should unlock the plugin
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// process by using PostMessage().
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if (destWindow->IsPlugin()) {
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destWindow = destWindow->GetParentWindowBase(false);
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if (!destWindow) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: "
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"Our window which is a parent of a plugin window is not found"));
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return;
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}
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}
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: Succeeded, "
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"Posting internal message to an nsWindow (%p)...",
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destWindow));
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mIsWaitingInternalMessage = true;
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UINT internalMessage = WinUtils::GetInternalMessage(aMessage);
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::PostMessage(destWindow->GetWindowHandle(), internalMessage,
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aWParam, aLParam);
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return;
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}
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// If the window under cursor is not in our process, it means:
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// 1. The window may be a plugin window (GeckoPluginWindow or its descendant).
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// 2. The window may be another application's window.
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HWND pluginWnd = WinUtils::FindOurProcessWindow(underCursorWnd);
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if (!pluginWnd) {
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// If there is no plugin window in ancestors of the window under cursor,
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// the window is for another applications (case 2).
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// We don't need to handle this message.
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
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("MouseScroll::ProcessNativeMouseWheelMessage: "
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"Our window is not found under the cursor"));
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return;
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}
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|
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// If we're a plugin window (MozillaWindowClass) and cursor in this window,
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// the message shouldn't go to plugin's wndproc again. So, we should handle
|
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// it on parent window. However, note that the DOM event may cause accessing
|
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// the plugin. Therefore, we should unlock the plugin process by using
|
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// PostMessage().
|
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if (aWidget->IsPlugin() &&
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aWidget->GetWindowHandle() == pluginWnd) {
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nsWindowBase* destWindow = aWidget->GetParentWindowBase(false);
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|
if (!destWindow) {
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MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::ProcessNativeMouseWheelMessage: Our normal window which "
|
|
"is a parent of this plugin window is not found"));
|
|
return;
|
|
}
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::ProcessNativeMouseWheelMessage: Succeeded, "
|
|
"Posting internal message to an nsWindow (%p) which is parent of this "
|
|
"plugin window...",
|
|
destWindow));
|
|
mIsWaitingInternalMessage = true;
|
|
UINT internalMessage = WinUtils::GetInternalMessage(aMessage);
|
|
::PostMessage(destWindow->GetWindowHandle(), internalMessage,
|
|
aWParam, aLParam);
|
|
return;
|
|
}
|
|
|
|
// If the window is a part of plugin, we should post the message to it.
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::ProcessNativeMouseWheelMessage: Succeeded, "
|
|
"Redirecting the message to a window which is a plugin child window"));
|
|
::PostMessage(underCursorWnd, aMessage, aWParam, aLParam);
|
|
}
|
|
|
|
bool
|
|
MouseScrollHandler::ProcessNativeScrollMessage(nsWindowBase* aWidget,
|
|
UINT aMessage,
|
|
WPARAM aWParam,
|
|
LPARAM aLParam)
|
|
{
|
|
if (aLParam || mUserPrefs.IsScrollMessageHandledAsWheelMessage()) {
|
|
// Scroll message generated by Thinkpad Trackpoint Driver or similar
|
|
// Treat as a mousewheel message and scroll appropriately
|
|
ProcessNativeMouseWheelMessage(aWidget, aMessage, aWParam, aLParam);
|
|
// Always consume the scroll message if we try to emulate mouse wheel
|
|
// action.
|
|
return true;
|
|
}
|
|
|
|
if (SynthesizingEvent::IsSynthesizing()) {
|
|
mSynthesizingEvent->NativeMessageReceived(aWidget, aMessage,
|
|
aWParam, aLParam);
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::ProcessNativeScrollMessage: aWidget=%p, "
|
|
"aMessage=%s, wParam=0x%08X, lParam=0x%08X",
|
|
aWidget, aMessage == WM_VSCROLL ? "WM_VSCROLL" : "WM_HSCROLL",
|
|
aWParam, aLParam));
|
|
|
|
// Scroll message generated by external application
|
|
WidgetContentCommandEvent commandEvent(true, eContentCommandScroll, aWidget);
|
|
commandEvent.mScroll.mIsHorizontal = (aMessage == WM_HSCROLL);
|
|
|
|
switch (LOWORD(aWParam)) {
|
|
case SB_LINEUP: // SB_LINELEFT
|
|
commandEvent.mScroll.mUnit =
|
|
WidgetContentCommandEvent::eCmdScrollUnit_Line;
|
|
commandEvent.mScroll.mAmount = -1;
|
|
break;
|
|
case SB_LINEDOWN: // SB_LINERIGHT
|
|
commandEvent.mScroll.mUnit =
|
|
WidgetContentCommandEvent::eCmdScrollUnit_Line;
|
|
commandEvent.mScroll.mAmount = 1;
|
|
break;
|
|
case SB_PAGEUP: // SB_PAGELEFT
|
|
commandEvent.mScroll.mUnit =
|
|
WidgetContentCommandEvent::eCmdScrollUnit_Page;
|
|
commandEvent.mScroll.mAmount = -1;
|
|
break;
|
|
case SB_PAGEDOWN: // SB_PAGERIGHT
|
|
commandEvent.mScroll.mUnit =
|
|
WidgetContentCommandEvent::eCmdScrollUnit_Page;
|
|
commandEvent.mScroll.mAmount = 1;
|
|
break;
|
|
case SB_TOP: // SB_LEFT
|
|
commandEvent.mScroll.mUnit =
|
|
WidgetContentCommandEvent::eCmdScrollUnit_Whole;
|
|
commandEvent.mScroll.mAmount = -1;
|
|
break;
|
|
case SB_BOTTOM: // SB_RIGHT
|
|
commandEvent.mScroll.mUnit =
|
|
WidgetContentCommandEvent::eCmdScrollUnit_Whole;
|
|
commandEvent.mScroll.mAmount = 1;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
// XXX If this is a plugin window, we should dispatch the event from
|
|
// parent window.
|
|
aWidget->DispatchContentCommandEvent(&commandEvent);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::HandleMouseWheelMessage(nsWindowBase* aWidget,
|
|
UINT aMessage,
|
|
WPARAM aWParam,
|
|
LPARAM aLParam)
|
|
{
|
|
MOZ_ASSERT(
|
|
(aMessage == MOZ_WM_MOUSEVWHEEL || aMessage == MOZ_WM_MOUSEHWHEEL),
|
|
"HandleMouseWheelMessage must be called with "
|
|
"MOZ_WM_MOUSEVWHEEL or MOZ_WM_MOUSEHWHEEL");
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::HandleMouseWheelMessage: aWidget=%p, "
|
|
"aMessage=MOZ_WM_MOUSE%sWHEEL, aWParam=0x%08X, aLParam=0x%08X",
|
|
aWidget, aMessage == MOZ_WM_MOUSEVWHEEL ? "V" : "H",
|
|
aWParam, aLParam));
|
|
|
|
mIsWaitingInternalMessage = false;
|
|
|
|
// If it's not allowed to cache system settings, we need to reset the cache
|
|
// before handling the mouse wheel message.
|
|
mSystemSettings.TrustedScrollSettingsDriver(aMessage == MOZ_WM_MOUSEVWHEEL);
|
|
|
|
EventInfo eventInfo(aWidget, WinUtils::GetNativeMessage(aMessage),
|
|
aWParam, aLParam);
|
|
if (!eventInfo.CanDispatchWheelEvent()) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::HandleMouseWheelMessage: Cannot dispatch the events"));
|
|
mLastEventInfo.ResetTransaction();
|
|
return;
|
|
}
|
|
|
|
// Discard the remaining delta if current wheel message and last one are
|
|
// received by different window or to scroll different direction or
|
|
// different unit scroll. Furthermore, if the last event was too old.
|
|
if (!mLastEventInfo.CanContinueTransaction(eventInfo)) {
|
|
mLastEventInfo.ResetTransaction();
|
|
}
|
|
|
|
mLastEventInfo.RecordEvent(eventInfo);
|
|
|
|
ModifierKeyState modKeyState = GetModifierKeyState(aMessage);
|
|
|
|
// Grab the widget, it might be destroyed by a DOM event handler.
|
|
RefPtr<nsWindowBase> kungFuDethGrip(aWidget);
|
|
|
|
WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
|
|
if (mLastEventInfo.InitWheelEvent(aWidget, wheelEvent, modKeyState)) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::HandleMouseWheelMessage: dispatching "
|
|
"eWheel event"));
|
|
aWidget->DispatchWheelEvent(&wheelEvent);
|
|
if (aWidget->Destroyed()) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::HandleMouseWheelMessage: The window was destroyed "
|
|
"by eWheel event"));
|
|
mLastEventInfo.ResetTransaction();
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::HandleMouseWheelMessage: eWheel event is not "
|
|
"dispatched"));
|
|
}
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::HandleScrollMessageAsMouseWheelMessage(nsWindowBase* aWidget,
|
|
UINT aMessage,
|
|
WPARAM aWParam,
|
|
LPARAM aLParam)
|
|
{
|
|
MOZ_ASSERT(
|
|
(aMessage == MOZ_WM_VSCROLL || aMessage == MOZ_WM_HSCROLL),
|
|
"HandleScrollMessageAsMouseWheelMessage must be called with "
|
|
"MOZ_WM_VSCROLL or MOZ_WM_HSCROLL");
|
|
|
|
mIsWaitingInternalMessage = false;
|
|
|
|
ModifierKeyState modKeyState = GetModifierKeyState(aMessage);
|
|
|
|
WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
|
|
double& delta =
|
|
(aMessage == MOZ_WM_VSCROLL) ? wheelEvent.deltaY : wheelEvent.deltaX;
|
|
int32_t& lineOrPageDelta =
|
|
(aMessage == MOZ_WM_VSCROLL) ? wheelEvent.lineOrPageDeltaY :
|
|
wheelEvent.lineOrPageDeltaX;
|
|
|
|
delta = 1.0;
|
|
lineOrPageDelta = 1;
|
|
|
|
switch (LOWORD(aWParam)) {
|
|
case SB_PAGEUP:
|
|
delta = -1.0;
|
|
lineOrPageDelta = -1;
|
|
case SB_PAGEDOWN:
|
|
wheelEvent.deltaMode = nsIDOMWheelEvent::DOM_DELTA_PAGE;
|
|
break;
|
|
|
|
case SB_LINEUP:
|
|
delta = -1.0;
|
|
lineOrPageDelta = -1;
|
|
case SB_LINEDOWN:
|
|
wheelEvent.deltaMode = nsIDOMWheelEvent::DOM_DELTA_LINE;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
modKeyState.InitInputEvent(wheelEvent);
|
|
// XXX Current mouse position may not be same as when the original message
|
|
// is received. We need to know the actual mouse cursor position when
|
|
// the original message was received.
|
|
InitEvent(aWidget, wheelEvent);
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::HandleScrollMessageAsMouseWheelMessage: aWidget=%p, "
|
|
"aMessage=MOZ_WM_%sSCROLL, aWParam=0x%08X, aLParam=0x%08X, "
|
|
"wheelEvent { refPoint: { x: %d, y: %d }, deltaX: %f, deltaY: %f, "
|
|
"lineOrPageDeltaX: %d, lineOrPageDeltaY: %d, "
|
|
"isShift: %s, isControl: %s, isAlt: %s, isMeta: %s }",
|
|
aWidget, (aMessage == MOZ_WM_VSCROLL) ? "V" : "H", aWParam, aLParam,
|
|
wheelEvent.refPoint.x, wheelEvent.refPoint.y,
|
|
wheelEvent.deltaX, wheelEvent.deltaY,
|
|
wheelEvent.lineOrPageDeltaX, wheelEvent.lineOrPageDeltaY,
|
|
GetBoolName(wheelEvent.IsShift()),
|
|
GetBoolName(wheelEvent.IsControl()),
|
|
GetBoolName(wheelEvent.IsAlt()),
|
|
GetBoolName(wheelEvent.IsMeta())));
|
|
|
|
aWidget->DispatchWheelEvent(&wheelEvent);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* EventInfo
|
|
*
|
|
******************************************************************************/
|
|
|
|
MouseScrollHandler::EventInfo::EventInfo(nsWindowBase* aWidget,
|
|
UINT aMessage,
|
|
WPARAM aWParam, LPARAM aLParam)
|
|
{
|
|
MOZ_ASSERT(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 = aWidget->GetWindowHandle();
|
|
mTimeStamp = TimeStamp::Now();
|
|
}
|
|
|
|
bool
|
|
MouseScrollHandler::EventInfo::CanDispatchWheelEvent() 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);
|
|
}
|
|
|
|
int32_t
|
|
MouseScrollHandler::EventInfo::GetScrollAmount() const
|
|
{
|
|
if (mIsPage) {
|
|
return 1;
|
|
}
|
|
return MouseScrollHandler::sInstance->
|
|
mSystemSettings.GetScrollAmount(mIsVertical);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* LastEventInfo
|
|
*
|
|
******************************************************************************/
|
|
|
|
bool
|
|
MouseScrollHandler::LastEventInfo::CanContinueTransaction(
|
|
const EventInfo& aNewEvent)
|
|
{
|
|
int32_t timeout = MouseScrollHandler::sInstance->
|
|
mUserPrefs.GetMouseScrollTransactionTimeout();
|
|
return !mWnd ||
|
|
(mWnd == aNewEvent.GetWindowHandle() &&
|
|
IsPositive() == aNewEvent.IsPositive() &&
|
|
mIsVertical == aNewEvent.IsVertical() &&
|
|
mIsPage == aNewEvent.IsPage() &&
|
|
(timeout < 0 ||
|
|
TimeStamp::Now() - mTimeStamp <=
|
|
TimeDuration::FromMilliseconds(timeout)));
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::LastEventInfo::ResetTransaction()
|
|
{
|
|
if (!mWnd) {
|
|
return;
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::LastEventInfo::ResetTransaction()"));
|
|
|
|
mWnd = nullptr;
|
|
mAccumulatedDelta = 0;
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::LastEventInfo::RecordEvent(const EventInfo& aEvent)
|
|
{
|
|
mWnd = aEvent.GetWindowHandle();
|
|
mDelta = aEvent.GetNativeDelta();
|
|
mIsVertical = aEvent.IsVertical();
|
|
mIsPage = aEvent.IsPage();
|
|
mTimeStamp = TimeStamp::Now();
|
|
}
|
|
|
|
/* static */
|
|
int32_t
|
|
MouseScrollHandler::LastEventInfo::RoundDelta(double aDelta)
|
|
{
|
|
return (aDelta >= 0) ? (int32_t)floor(aDelta) : (int32_t)ceil(aDelta);
|
|
}
|
|
|
|
bool
|
|
MouseScrollHandler::LastEventInfo::InitWheelEvent(
|
|
nsWindowBase* aWidget,
|
|
WidgetWheelEvent& aWheelEvent,
|
|
const ModifierKeyState& aModKeyState)
|
|
{
|
|
MOZ_ASSERT(aWheelEvent.mMessage == eWheel);
|
|
|
|
// XXX Why don't we use lParam value? We should use lParam value because
|
|
// our internal message is always posted by original message handler.
|
|
// So, GetMessagePos() may return different cursor position.
|
|
InitEvent(aWidget, aWheelEvent);
|
|
|
|
aModKeyState.InitInputEvent(aWheelEvent);
|
|
|
|
// Our positive delta value means to bottom or right.
|
|
// But positive native delta value means to top or right.
|
|
// Use orienter for computing our delta value with native delta value.
|
|
int32_t orienter = mIsVertical ? -1 : 1;
|
|
|
|
aWheelEvent.deltaMode = mIsPage ? nsIDOMWheelEvent::DOM_DELTA_PAGE :
|
|
nsIDOMWheelEvent::DOM_DELTA_LINE;
|
|
|
|
double& delta = mIsVertical ? aWheelEvent.deltaY : aWheelEvent.deltaX;
|
|
int32_t& lineOrPageDelta = mIsVertical ? aWheelEvent.lineOrPageDeltaY :
|
|
aWheelEvent.lineOrPageDeltaX;
|
|
|
|
double nativeDeltaPerUnit =
|
|
mIsPage ? static_cast<double>(WHEEL_DELTA) :
|
|
static_cast<double>(WHEEL_DELTA) / GetScrollAmount();
|
|
|
|
delta = static_cast<double>(mDelta) * orienter / nativeDeltaPerUnit;
|
|
mAccumulatedDelta += mDelta;
|
|
lineOrPageDelta =
|
|
mAccumulatedDelta * orienter / RoundDelta(nativeDeltaPerUnit);
|
|
mAccumulatedDelta -=
|
|
lineOrPageDelta * orienter * RoundDelta(nativeDeltaPerUnit);
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::LastEventInfo::InitWheelEvent: aWidget=%p, "
|
|
"aWheelEvent { refPoint: { x: %d, y: %d }, deltaX: %f, deltaY: %f, "
|
|
"lineOrPageDeltaX: %d, lineOrPageDeltaY: %d, "
|
|
"isShift: %s, isControl: %s, isAlt: %s, isMeta: %s }, "
|
|
"mAccumulatedDelta: %d",
|
|
aWidget, aWheelEvent.refPoint.x, aWheelEvent.refPoint.y,
|
|
aWheelEvent.deltaX, aWheelEvent.deltaY,
|
|
aWheelEvent.lineOrPageDeltaX, aWheelEvent.lineOrPageDeltaY,
|
|
GetBoolName(aWheelEvent.IsShift()),
|
|
GetBoolName(aWheelEvent.IsControl()),
|
|
GetBoolName(aWheelEvent.IsAlt()),
|
|
GetBoolName(aWheelEvent.IsMeta()), mAccumulatedDelta));
|
|
|
|
return (delta != 0);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* SystemSettings
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
MouseScrollHandler::SystemSettings::Init()
|
|
{
|
|
if (mInitialized) {
|
|
return;
|
|
}
|
|
|
|
InitScrollLines();
|
|
InitScrollChars();
|
|
|
|
mInitialized = true;
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::Init(): initialized, "
|
|
"mScrollLines=%d, mScrollChars=%d",
|
|
mScrollLines, mScrollChars));
|
|
}
|
|
|
|
bool
|
|
MouseScrollHandler::SystemSettings::InitScrollLines()
|
|
{
|
|
int32_t oldValue = mInitialized ? mScrollLines : 0;
|
|
mIsReliableScrollLines = false;
|
|
mScrollLines = MouseScrollHandler::sInstance->
|
|
mUserPrefs.GetOverriddenVerticalScrollAmout();
|
|
if (mScrollLines >= 0) {
|
|
// overridden by the pref.
|
|
mIsReliableScrollLines = true;
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::InitScrollLines(): mScrollLines is "
|
|
"overridden by the pref: %d",
|
|
mScrollLines));
|
|
} else if (!::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0,
|
|
&mScrollLines, 0)) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::InitScrollLines(): ::SystemParametersInfo("
|
|
"SPI_GETWHEELSCROLLLINES) failed"));
|
|
mScrollLines = 3;
|
|
}
|
|
|
|
if (mScrollLines > WHEEL_DELTA) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::InitScrollLines(): 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;
|
|
}
|
|
|
|
return oldValue != mScrollLines;
|
|
}
|
|
|
|
bool
|
|
MouseScrollHandler::SystemSettings::InitScrollChars()
|
|
{
|
|
int32_t oldValue = mInitialized ? mScrollChars : 0;
|
|
mIsReliableScrollChars = false;
|
|
mScrollChars = MouseScrollHandler::sInstance->
|
|
mUserPrefs.GetOverriddenHorizontalScrollAmout();
|
|
if (mScrollChars >= 0) {
|
|
// overridden by the pref.
|
|
mIsReliableScrollChars = true;
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::InitScrollChars(): mScrollChars is "
|
|
"overridden by the pref: %d",
|
|
mScrollChars));
|
|
} else if (!::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS, 0,
|
|
&mScrollChars, 0)) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::InitScrollChars(): ::SystemParametersInfo("
|
|
"SPI_GETWHEELSCROLLCHARS) failed, %s",
|
|
IsVistaOrLater() ?
|
|
"this is unexpected on Vista or later" :
|
|
"but on XP or earlier, this is not a problem"));
|
|
mScrollChars = 1;
|
|
}
|
|
|
|
if (mScrollChars > WHEEL_DELTA) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::SystemSettings::InitScrollChars(): the result of "
|
|
"::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS) is too large: %d",
|
|
mScrollChars));
|
|
// See the comments for the case mScrollLines > WHEEL_DELTA.
|
|
mScrollChars = WHEEL_PAGESCROLL;
|
|
}
|
|
|
|
return oldValue != mScrollChars;
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SystemSettings::MarkDirty()
|
|
{
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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();
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SystemSettings::RefreshCache(bool aForVertical)
|
|
{
|
|
bool isChanged = aForVertical ? InitScrollLines() : InitScrollChars();
|
|
if (!isChanged) {
|
|
return;
|
|
}
|
|
// If the scroll amount is changed, we should reset current transaction.
|
|
MOZ_ASSERT(sInstance,
|
|
"Must not be called at initializing MouseScrollHandler");
|
|
MouseScrollHandler::sInstance->mLastEventInfo.ResetTransaction();
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SystemSettings::TrustedScrollSettingsDriver(
|
|
bool aIsVertical)
|
|
{
|
|
if (!mInitialized) {
|
|
return;
|
|
}
|
|
|
|
// if the cache is initialized with prefs, we don't need to refresh it.
|
|
if ((aIsVertical && mIsReliableScrollLines) ||
|
|
(!aIsVertical && mIsReliableScrollChars)) {
|
|
return;
|
|
}
|
|
|
|
MouseScrollHandler::UserPrefs& userPrefs =
|
|
MouseScrollHandler::sInstance->mUserPrefs;
|
|
|
|
// If system settings cache is disabled, we should always refresh them.
|
|
if (!userPrefs.IsSystemSettingCacheEnabled()) {
|
|
RefreshCache(aIsVertical);
|
|
return;
|
|
}
|
|
|
|
// If pref is set to as "always trust the cache", we shouldn't refresh them
|
|
// in any environments.
|
|
if (userPrefs.IsSystemSettingCacheForciblyEnabled()) {
|
|
return;
|
|
}
|
|
|
|
// If SynTP of Synaptics or Apoint of Alps is installed, it may hook
|
|
// ::SystemParametersInfo() and returns different value from system settings.
|
|
if (Device::SynTP::IsDriverInstalled() ||
|
|
Device::Apoint::IsDriverInstalled()) {
|
|
RefreshCache(aIsVertical);
|
|
return;
|
|
}
|
|
|
|
// XXX We're not sure about other touchpad drivers...
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 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;
|
|
|
|
mScrollMessageHandledAsWheelMessage =
|
|
Preferences::GetBool("mousewheel.emulate_at_wm_scroll", false);
|
|
mEnableSystemSettingCache =
|
|
Preferences::GetBool("mousewheel.system_settings_cache.enabled", true);
|
|
mForceEnableSystemSettingCache =
|
|
Preferences::GetBool("mousewheel.system_settings_cache.force_enabled",
|
|
false);
|
|
mOverriddenVerticalScrollAmount =
|
|
Preferences::GetInt("mousewheel.windows.vertical_amount_override", -1);
|
|
mOverriddenHorizontalScrollAmount =
|
|
Preferences::GetInt("mousewheel.windows.horizontal_amount_override", -1);
|
|
mMouseScrollTransactionTimeout =
|
|
Preferences::GetInt("mousewheel.windows.transaction.timeout",
|
|
DEFAULT_TIMEOUT_DURATION);
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::UserPrefs::Init(): initialized, "
|
|
"mScrollMessageHandledAsWheelMessage=%s, "
|
|
"mEnableSystemSettingCache=%s, "
|
|
"mForceEnableSystemSettingCache=%s, "
|
|
"mOverriddenVerticalScrollAmount=%d, "
|
|
"mOverriddenHorizontalScrollAmount=%d, "
|
|
"mMouseScrollTransactionTimeout=%d",
|
|
GetBoolName(mScrollMessageHandledAsWheelMessage),
|
|
GetBoolName(mEnableSystemSettingCache),
|
|
GetBoolName(mForceEnableSystemSettingCache),
|
|
mOverriddenVerticalScrollAmount, mOverriddenHorizontalScrollAmount,
|
|
mMouseScrollTransactionTimeout));
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::UserPrefs::MarkDirty()
|
|
{
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScrollHandler::UserPrefs::MarkDirty(): Marking UserPrefs dirty"));
|
|
mInitialized = false;
|
|
// Some prefs might override system settings, so, we should mark them dirty.
|
|
MouseScrollHandler::sInstance->mSystemSettings.MarkDirty();
|
|
// 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) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::GetWorkaroundPref(): Failed, aPrefName is NULL"));
|
|
return aValueIfAutomatic;
|
|
}
|
|
|
|
int32_t lHackValue = 0;
|
|
if (NS_FAILED(Preferences::GetInt(aPrefName, &lHackValue))) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::GetWorkaroundPref(): Preferences::GetInt() failed,"
|
|
" aPrefName=\"%s\", aValueIfAutomatic=%s",
|
|
aPrefName, GetBoolName(aValueIfAutomatic)));
|
|
return aValueIfAutomatic;
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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()
|
|
{
|
|
// FYI: Thinkpad's TrackPoint is Apoint of Alps and UltraNav is SynTP of
|
|
// Synaptics. So, those drivers' information should be initialized
|
|
// before calling methods of TrackPoint and UltraNav.
|
|
SynTP::Init();
|
|
Elantech::Init();
|
|
Apoint::Init();
|
|
|
|
sFakeScrollableWindowNeeded =
|
|
GetWorkaroundPref("ui.trackpoint_hack.enabled",
|
|
(TrackPoint::IsDriverInstalled() ||
|
|
UltraNav::IsObsoleteDriverInstalled()));
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::Init(): sFakeScrollableWindowNeeded=%s",
|
|
GetBoolName(sFakeScrollableWindowNeeded)));
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Device::SynTP
|
|
*
|
|
******************************************************************************/
|
|
|
|
/* static */
|
|
void
|
|
MouseScrollHandler::Device::SynTP::Init()
|
|
{
|
|
if (sInitialized) {
|
|
return;
|
|
}
|
|
|
|
sInitialized = true;
|
|
sMajorVersion = 0;
|
|
sMinorVersion = -1;
|
|
|
|
wchar_t buf[40];
|
|
bool foundKey =
|
|
WinUtils::GetRegistryKey(HKEY_LOCAL_MACHINE,
|
|
L"Software\\Synaptics\\SynTP\\Install",
|
|
L"DriverVersion",
|
|
buf, sizeof buf);
|
|
if (!foundKey) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::SynTP::Init(): "
|
|
"SynTP driver is not found"));
|
|
return;
|
|
}
|
|
|
|
sMajorVersion = wcstol(buf, nullptr, 10);
|
|
sMinorVersion = 0;
|
|
wchar_t* p = wcschr(buf, L'.');
|
|
if (p) {
|
|
sMinorVersion = wcstol(p + 1, nullptr, 10);
|
|
}
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::SynTP::Init(): "
|
|
"found driver version = %d.%d",
|
|
sMajorVersion, sMinorVersion));
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Device::Elantech
|
|
*
|
|
******************************************************************************/
|
|
|
|
/* static */
|
|
void
|
|
MouseScrollHandler::Device::Elantech::Init()
|
|
{
|
|
int32_t version = GetDriverMajorVersion();
|
|
bool needsHack =
|
|
Device::GetWorkaroundPref("ui.elantech_gesture_hacks.enabled",
|
|
version != 0);
|
|
sUseSwipeHack = needsHack && version <= 7;
|
|
sUsePinchHack = needsHack && version <= 8;
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::Elantech::Init(): version=%d, sUseSwipeHack=%s, "
|
|
"sUsePinchHack=%s",
|
|
version, GetBoolName(sUseSwipeHack), GetBoolName(sUsePinchHack)));
|
|
}
|
|
|
|
/* static */
|
|
int32_t
|
|
MouseScrollHandler::Device::Elantech::GetDriverMajorVersion()
|
|
{
|
|
wchar_t 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 (wchar_t* p = buf; *p; p++) {
|
|
if (*p >= L'0' && *p <= L'9' && (p == buf || *(p - 1) == L' ')) {
|
|
return wcstol(p, nullptr, 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 wchar_t* 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;
|
|
wchar_t 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(nsWindowBase* aWidget,
|
|
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) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::Elantech::HandleKeyMessage(): Dispatching "
|
|
"%s command event",
|
|
aWParam == VK_NEXT ? "Forward" : "Back"));
|
|
|
|
WidgetCommandEvent commandEvent(true, nsGkAtoms::onAppCommand,
|
|
(aWParam == VK_NEXT) ? nsGkAtoms::Forward : nsGkAtoms::Back, aWidget);
|
|
InitEvent(aWidget, commandEvent);
|
|
aWidget->DispatchWindowEvent(&commandEvent);
|
|
}
|
|
else {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::Elantech::HandleKeyMessage(): Consumed"));
|
|
}
|
|
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;
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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;
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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::Apoint
|
|
*
|
|
******************************************************************************/
|
|
|
|
/* static */
|
|
void
|
|
MouseScrollHandler::Device::Apoint::Init()
|
|
{
|
|
if (sInitialized) {
|
|
return;
|
|
}
|
|
|
|
sInitialized = true;
|
|
sMajorVersion = 0;
|
|
sMinorVersion = -1;
|
|
|
|
wchar_t buf[40];
|
|
bool foundKey =
|
|
WinUtils::GetRegistryKey(HKEY_LOCAL_MACHINE,
|
|
L"Software\\Alps\\Apoint",
|
|
L"ProductVer",
|
|
buf, sizeof buf);
|
|
if (!foundKey) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::Apoint::Init(): "
|
|
"Apoint driver is not found"));
|
|
return;
|
|
}
|
|
|
|
sMajorVersion = wcstol(buf, nullptr, 10);
|
|
sMinorVersion = 0;
|
|
wchar_t* p = wcschr(buf, L'.');
|
|
if (p) {
|
|
sMinorVersion = wcstol(p + 1, nullptr, 10);
|
|
}
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::Apoint::Init(): "
|
|
"found driver version = %d.%d",
|
|
sMajorVersion, sMinorVersion));
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Device::TrackPoint
|
|
*
|
|
******************************************************************************/
|
|
|
|
/* static */
|
|
bool
|
|
MouseScrollHandler::Device::TrackPoint::IsDriverInstalled()
|
|
{
|
|
if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
|
|
L"Software\\Lenovo\\TrackPoint")) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::TrackPoint::IsDriverInstalled(): "
|
|
"Lenovo's TrackPoint driver is found"));
|
|
return true;
|
|
}
|
|
|
|
if (WinUtils::HasRegistryKey(HKEY_CURRENT_USER,
|
|
L"Software\\Alps\\Apoint\\TrackPoint")) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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")) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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")) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("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")) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
|
|
"Synaptics's UltraNav (PS/2) driver is found"));
|
|
installed = true;
|
|
}
|
|
|
|
if (!installed) {
|
|
return false;
|
|
}
|
|
|
|
int32_t majorVersion = Device::SynTP::GetDriverMajorVersion();
|
|
if (!majorVersion) {
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::UltraNav::IsObsoleteDriverInstalled(): "
|
|
"Failed to get UltraNav driver version"));
|
|
return false;
|
|
}
|
|
int32_t minorVersion = Device::SynTP::GetDriverMinorVersion();
|
|
return majorVersion < 15 || (majorVersion == 15 && minorVersion == 0);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Device::SetPoint
|
|
*
|
|
******************************************************************************/
|
|
|
|
/* static */
|
|
bool
|
|
MouseScrollHandler::Device::SetPoint::IsGetMessagePosResponseValid(
|
|
UINT aMessage,
|
|
WPARAM aWParam,
|
|
LPARAM aLParam)
|
|
{
|
|
if (aMessage != WM_MOUSEHWHEEL) {
|
|
return false;
|
|
}
|
|
|
|
POINTS pts = MouseScrollHandler::GetCurrentMessagePos();
|
|
LPARAM messagePos = MAKELPARAM(pts.x, pts.y);
|
|
|
|
// XXX We should check whether SetPoint is installed or not by registry.
|
|
|
|
// SetPoint, Logitech (Logicool) mouse driver, (confirmed with 4.82.11 and
|
|
// MX-1100) always sets 0 to the lParam of WM_MOUSEHWHEEL. The driver SENDs
|
|
// one message at first time, this time, ::GetMessagePos() works fine.
|
|
// Then, we will return 0 (0 means we process it) to the message. Then, the
|
|
// driver will POST the same messages continuously during the wheel tilted.
|
|
// But ::GetMessagePos() API always returns (0, 0) for them, even if the
|
|
// actual mouse cursor isn't 0,0. Therefore, we cannot trust the result of
|
|
// ::GetMessagePos API if the sender is SetPoint.
|
|
if (!sMightBeUsing && !aLParam && aLParam != messagePos &&
|
|
::InSendMessage()) {
|
|
sMightBeUsing = true;
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::SetPoint::IsGetMessagePosResponseValid(): "
|
|
"Might using SetPoint"));
|
|
} else if (sMightBeUsing && aLParam != 0 && ::InSendMessage()) {
|
|
// The user has changed the mouse from Logitech's to another one (e.g.,
|
|
// the user has changed to the touchpad of the notebook.
|
|
sMightBeUsing = false;
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScroll::Device::SetPoint::IsGetMessagePosResponseValid(): "
|
|
"Might stop using SetPoint"));
|
|
}
|
|
return (sMightBeUsing && !aLParam && !messagePos);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* SynthesizingEvent
|
|
*
|
|
******************************************************************************/
|
|
|
|
/* static */
|
|
bool
|
|
MouseScrollHandler::SynthesizingEvent::IsSynthesizing()
|
|
{
|
|
return MouseScrollHandler::sInstance &&
|
|
MouseScrollHandler::sInstance->mSynthesizingEvent &&
|
|
MouseScrollHandler::sInstance->mSynthesizingEvent->mStatus !=
|
|
NOT_SYNTHESIZING;
|
|
}
|
|
|
|
nsresult
|
|
MouseScrollHandler::SynthesizingEvent::Synthesize(const POINTS& aCursorPoint,
|
|
HWND aWnd,
|
|
UINT aMessage,
|
|
WPARAM aWParam,
|
|
LPARAM aLParam,
|
|
const BYTE (&aKeyStates)[256])
|
|
{
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScrollHandler::SynthesizingEvent::Synthesize(): aCursorPoint: { "
|
|
"x: %d, y: %d }, aWnd=0x%X, aMessage=0x%04X, aWParam=0x%08X, "
|
|
"aLParam=0x%08X, IsSynthesized()=%s, mStatus=%s",
|
|
aCursorPoint.x, aCursorPoint.y, aWnd, aMessage, aWParam, aLParam,
|
|
GetBoolName(IsSynthesizing()), GetStatusName()));
|
|
|
|
if (IsSynthesizing()) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
::GetKeyboardState(mOriginalKeyState);
|
|
|
|
// Note that we cannot use ::SetCursorPos() because it works asynchronously.
|
|
// We should SEND the message for reducing the possibility of receiving
|
|
// unexpected message which were not sent from here.
|
|
mCursorPoint = aCursorPoint;
|
|
|
|
mWnd = aWnd;
|
|
mMessage = aMessage;
|
|
mWParam = aWParam;
|
|
mLParam = aLParam;
|
|
|
|
memcpy(mKeyState, aKeyStates, sizeof(mKeyState));
|
|
::SetKeyboardState(mKeyState);
|
|
|
|
mStatus = SENDING_MESSAGE;
|
|
|
|
// Don't assume that aWnd is always managed by nsWindow. It might be
|
|
// a plugin window.
|
|
::SendMessage(aWnd, aMessage, aWParam, aLParam);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SynthesizingEvent::NativeMessageReceived(nsWindowBase* aWidget,
|
|
UINT aMessage,
|
|
WPARAM aWParam,
|
|
LPARAM aLParam)
|
|
{
|
|
if (mStatus == SENDING_MESSAGE && mMessage == aMessage &&
|
|
mWParam == aWParam && mLParam == aLParam) {
|
|
mStatus = NATIVE_MESSAGE_RECEIVED;
|
|
if (aWidget && aWidget->GetWindowHandle() == mWnd) {
|
|
return;
|
|
}
|
|
// If the target window is not ours and received window is our plugin
|
|
// window, it comes from child window of the plugin.
|
|
if (aWidget && aWidget->IsPlugin() &&
|
|
!WinUtils::GetNSWindowBasePtr(mWnd)) {
|
|
return;
|
|
}
|
|
// Otherwise, the message may not be sent by us.
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScrollHandler::SynthesizingEvent::NativeMessageReceived(): "
|
|
"aWidget=%p, aWidget->GetWindowHandle()=0x%X, mWnd=0x%X, "
|
|
"aMessage=0x%04X, aWParam=0x%08X, aLParam=0x%08X, mStatus=%s",
|
|
aWidget, aWidget ? aWidget->GetWindowHandle() : 0, mWnd,
|
|
aMessage, aWParam, aLParam, GetStatusName()));
|
|
|
|
// We failed to receive our sent message, we failed to do the job.
|
|
Finish();
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SynthesizingEvent::NotifyNativeMessageHandlingFinished()
|
|
{
|
|
if (!IsSynthesizing()) {
|
|
return;
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScrollHandler::SynthesizingEvent::"
|
|
"NotifyNativeMessageHandlingFinished(): IsWaitingInternalMessage=%s",
|
|
GetBoolName(MouseScrollHandler::IsWaitingInternalMessage())));
|
|
|
|
if (MouseScrollHandler::IsWaitingInternalMessage()) {
|
|
mStatus = INTERNAL_MESSAGE_POSTED;
|
|
return;
|
|
}
|
|
|
|
// If the native message handler didn't post our internal message,
|
|
// we our job is finished.
|
|
// TODO: When we post the message to plugin window, there is remaning job.
|
|
Finish();
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SynthesizingEvent::NotifyInternalMessageHandlingFinished()
|
|
{
|
|
if (!IsSynthesizing()) {
|
|
return;
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScrollHandler::SynthesizingEvent::"
|
|
"NotifyInternalMessageHandlingFinished()"));
|
|
|
|
Finish();
|
|
}
|
|
|
|
void
|
|
MouseScrollHandler::SynthesizingEvent::Finish()
|
|
{
|
|
if (!IsSynthesizing()) {
|
|
return;
|
|
}
|
|
|
|
MOZ_LOG(gMouseScrollLog, LogLevel::Info,
|
|
("MouseScrollHandler::SynthesizingEvent::Finish()"));
|
|
|
|
// Restore the original key state.
|
|
::SetKeyboardState(mOriginalKeyState);
|
|
|
|
mStatus = NOT_SYNTHESIZING;
|
|
}
|
|
|
|
} // namespace widget
|
|
} // namespace mozilla
|