The Tor Browser: widget/gonk/nsAppShell.cpp@6474c204b198 (annotated)

widget/gonk/nsAppShell.cpp@6474c204b198 (annotated)

widget/gonk/nsAppShell.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* vim: set ts=4 sw=4 sts=4 tw=80 et: */
 /* Copyright 2012 Mozilla Foundation and Mozilla contributors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <sys/epoll.h>
 #include <sys/ioctl.h>
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <utils/BitSet.h>
 #include "base/basictypes.h"
 #include "GonkPermission.h"
 #include "nscore.h"
 #ifdef MOZ_OMX_DECODER
 #include "MediaResourceManagerService.h"
 #endif
 #include "mozilla/TouchEvents.h"
 #include "mozilla/FileUtils.h"
 #include "mozilla/Hal.h"
 #include "mozilla/MouseEvents.h"
 #include "mozilla/Mutex.h"
 #include "mozilla/Services.h"
 #include "mozilla/TextEvents.h"
 #if ANDROID_VERSION >= 18
 #include "nativewindow/FakeSurfaceComposer.h"
 #endif
 #include "nsAppShell.h"
 #include "mozilla/dom/Touch.h"
 #include "nsGkAtoms.h"
 #include "nsIObserverService.h"
 #include "nsIScreen.h"
 #include "nsScreenManagerGonk.h"
 #include "nsThreadUtils.h"
 #include "nsWindow.h"
 #include "OrientationObserver.h"
 #include "GonkMemoryPressureMonitoring.h"
 #include "android/log.h"
 #include "libui/EventHub.h"
 #include "libui/InputReader.h"
 #include "libui/InputDispatcher.h"
 #include "cutils/properties.h"
 #ifdef MOZ_NUWA_PROCESS
 #include "ipc/Nuwa.h"
 #endif
 #include "GeckoProfiler.h"
 // Defines kKeyMapping and GetKeyNameIndex()
 #include "GonkKeyMapping.h"
 #define LOG(args...)                                            \
     __android_log_print(ANDROID_LOG_INFO, "Gonk" , ## args)
 #ifdef VERBOSE_LOG_ENABLED
 # define VERBOSE_LOG(args...)                           \
     __android_log_print(ANDROID_LOG_INFO, "Gonk" , ## args)
 #else
 # define VERBOSE_LOG(args...)                   \
     (void)0
 #endif
 using namespace android;
 using namespace mozilla;
 using namespace mozilla::dom;
 using namespace mozilla::services;
 using namespace mozilla::widget;
 bool gDrawRequest = false;
 static nsAppShell *gAppShell = nullptr;
 static int epollfd = 0;
 static int signalfds[2] = {0};
 static bool sDevInputAudioJack;
 static int32_t sHeadphoneState;
 static int32_t sMicrophoneState;
 // Amount of time in MS before an input is considered expired.
 static const uint64_t kInputExpirationThresholdMs = 1000;
 NS_IMPL_ISUPPORTS_INHERITED(nsAppShell, nsBaseAppShell, nsIObserver)
 static uint64_t
 nanosecsToMillisecs(nsecs_t nsecs)
 {
     return nsecs / 1000000;
 }
 namespace mozilla {
 bool ProcessNextEvent()
 {
     return gAppShell->ProcessNextNativeEvent(true);
 }
 void NotifyEvent()
 {
     gAppShell->NotifyNativeEvent();
 }
 } // namespace mozilla
 static void
 pipeHandler(int fd, FdHandler *data)
 {
     ssize_t len;
     do {
         char tmp[32];
         len = read(fd, tmp, sizeof(tmp));
     } while (len > 0);
 }
 struct Touch {
     int32_t id;
     PointerCoords coords;
 };
 struct UserInputData {
     uint64_t timeMs;
     enum {
         MOTION_DATA,
         KEY_DATA
     } type;
     int32_t action;
     int32_t flags;
     int32_t metaState;
     int32_t deviceId;
     union {
         struct {
             int32_t keyCode;
             int32_t scanCode;
         } key;
         struct {
             int32_t touchCount;
             ::Touch touches[MAX_POINTERS];
         } motion;
     };
     Modifiers DOMModifiers() const;
 };
 Modifiers
 UserInputData::DOMModifiers() const
 {
     Modifiers result = 0;
     if (metaState & (AMETA_ALT_ON | AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON)) {
         result |= MODIFIER_ALT;
     }
     if (metaState & (AMETA_SHIFT_ON |
                      AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
         result |= MODIFIER_SHIFT;
     }
     if (metaState & AMETA_FUNCTION_ON) {
         result |= MODIFIER_FN;
     }
     if (metaState & (AMETA_CTRL_ON |
                      AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON)) {
         result |= MODIFIER_CONTROL;
     }
     if (metaState & (AMETA_META_ON |
                      AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON)) {
         result |= MODIFIER_META;
     }
     if (metaState & AMETA_CAPS_LOCK_ON) {
         result |= MODIFIER_CAPSLOCK;
     }
     if (metaState & AMETA_NUM_LOCK_ON) {
         result |= MODIFIER_NUMLOCK;
     }
     if (metaState & AMETA_SCROLL_LOCK_ON) {
         result |= MODIFIER_SCROLLLOCK;
     }
     return result;
 }
 static void
 sendMouseEvent(uint32_t msg, UserInputData& data, bool forwardToChildren)
 {
     WidgetMouseEvent event(true, msg, nullptr,
                            WidgetMouseEvent::eReal, WidgetMouseEvent::eNormal);
     event.refPoint.x = data.motion.touches[0].coords.getX();
     event.refPoint.y = data.motion.touches[0].coords.getY();
     event.time = data.timeMs;
     event.button = WidgetMouseEvent::eLeftButton;
     event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
     if (msg != NS_MOUSE_MOVE)
         event.clickCount = 1;
     event.modifiers = data.DOMModifiers();
     event.mFlags.mNoCrossProcessBoundaryForwarding = !forwardToChildren;
     nsWindow::DispatchInputEvent(event);
 }
 static void
 addDOMTouch(UserInputData& data, WidgetTouchEvent& event, int i)
 {
     const ::Touch& touch = data.motion.touches[i];
     event.touches.AppendElement(
         new dom::Touch(touch.id,
                        nsIntPoint(floor(touch.coords.getX() + 0.5), floor(touch.coords.getY() + 0.5)),
                        nsIntPoint(touch.coords.getAxisValue(AMOTION_EVENT_AXIS_SIZE),
                                   touch.coords.getAxisValue(AMOTION_EVENT_AXIS_SIZE)),
 ,
                        touch.coords.getAxisValue(AMOTION_EVENT_AXIS_PRESSURE))
     );
 }
 static nsEventStatus
 sendTouchEvent(UserInputData& data, bool* captured)
 {
     uint32_t msg;
     int32_t action = data.action & AMOTION_EVENT_ACTION_MASK;
     switch (action) {
     case AMOTION_EVENT_ACTION_DOWN:
     case AMOTION_EVENT_ACTION_POINTER_DOWN:
         msg = NS_TOUCH_START;
         break;
     case AMOTION_EVENT_ACTION_MOVE:
         msg = NS_TOUCH_MOVE;
         break;
     case AMOTION_EVENT_ACTION_UP:
     case AMOTION_EVENT_ACTION_POINTER_UP:
         msg = NS_TOUCH_END;
         break;
     case AMOTION_EVENT_ACTION_OUTSIDE:
     case AMOTION_EVENT_ACTION_CANCEL:
         msg = NS_TOUCH_CANCEL;
         break;
     default:
         msg = NS_EVENT_NULL;
         break;
     }
     WidgetTouchEvent event(true, msg, nullptr);
     event.time = data.timeMs;
     event.modifiers = data.DOMModifiers();
     int32_t i;
     if (msg == NS_TOUCH_END) {
         i = data.action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK;
         i >>= AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
         addDOMTouch(data, event, i);
     } else {
         for (i = 0; i < data.motion.touchCount; ++i)
             addDOMTouch(data, event, i);
     }
     return nsWindow::DispatchInputEvent(event, captured);
 }
 class MOZ_STACK_CLASS KeyEventDispatcher
 {
 public:
     KeyEventDispatcher(const UserInputData& aData,
                        KeyCharacterMap* aKeyCharMap);
     void Dispatch();
 private:
     const UserInputData& mData;
     sp<KeyCharacterMap> mKeyCharMap;
     char16_t mChar;
     char16_t mUnmodifiedChar;
     uint32_t mDOMKeyCode;
     KeyNameIndex mDOMKeyNameIndex;
     char16_t mDOMPrintableKeyValue;
     bool IsKeyPress() const
     {
         return mData.action == AKEY_EVENT_ACTION_DOWN;
     }
     bool IsRepeat() const
     {
         return IsKeyPress() && (mData.flags & AKEY_EVENT_FLAG_LONG_PRESS);
     }
     char16_t PrintableKeyValue() const;
     int32_t UnmodifiedMetaState() const
     {
         return mData.metaState &
             ~(AMETA_ALT_ON | AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON |
               AMETA_CTRL_ON | AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON |
               AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
     }
     static bool IsControlChar(char16_t aChar)
     {
         return (aChar < ' ' || aChar == 0x7F);
     }
     void DispatchKeyDownEvent();
     void DispatchKeyUpEvent();
     nsEventStatus DispatchKeyEventInternal(uint32_t aEventMessage);
 };
 KeyEventDispatcher::KeyEventDispatcher(const UserInputData& aData,
                                        KeyCharacterMap* aKeyCharMap) :
     mData(aData), mKeyCharMap(aKeyCharMap), mChar(0), mUnmodifiedChar(0),
     mDOMPrintableKeyValue(0)
 {
     // XXX Printable key's keyCode value should be computed with actual
     //     input character.
     mDOMKeyCode = (mData.key.keyCode < (ssize_t)ArrayLength(kKeyMapping)) ?
         kKeyMapping[mData.key.keyCode] : 0;
     mDOMKeyNameIndex = GetKeyNameIndex(mData.key.keyCode);
     if (!mKeyCharMap.get()) {
         return;
     }
     mChar = mKeyCharMap->getCharacter(mData.key.keyCode, mData.metaState);
     if (IsControlChar(mChar)) {
         mChar = 0;
     }
     int32_t unmodifiedMetaState = UnmodifiedMetaState();
     if (mData.metaState == unmodifiedMetaState) {
         mUnmodifiedChar = mChar;
     } else {
         mUnmodifiedChar = mKeyCharMap->getCharacter(mData.key.keyCode,
                                                     unmodifiedMetaState);
         if (IsControlChar(mUnmodifiedChar)) {
             mUnmodifiedChar = 0;
         }
     }
     mDOMPrintableKeyValue = PrintableKeyValue();
 }
 char16_t
 KeyEventDispatcher::PrintableKeyValue() const
 {
     if (mDOMKeyNameIndex != KEY_NAME_INDEX_USE_STRING) {
         return 0;
     }
     return mChar ? mChar : mUnmodifiedChar;
 }
 nsEventStatus
 KeyEventDispatcher::DispatchKeyEventInternal(uint32_t aEventMessage)
 {
     WidgetKeyboardEvent event(true, aEventMessage, nullptr);
     if (aEventMessage == NS_KEY_PRESS) {
         // XXX If the charCode is not a printable character, the charCode
         //     should be computed without Ctrl/Alt/Meta modifiers.
         event.charCode = static_cast<uint32_t>(mChar);
     }
     if (!event.charCode) {
         event.keyCode = mDOMKeyCode;
     }
     event.isChar = !!event.charCode;
     event.mIsRepeat = IsRepeat();
     event.mKeyNameIndex = mDOMKeyNameIndex;
     if (mDOMPrintableKeyValue) {
         event.mKeyValue = mDOMPrintableKeyValue;
     }
     event.modifiers = mData.DOMModifiers();
     event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_MOBILE;
     event.time = mData.timeMs;
     return nsWindow::DispatchInputEvent(event);
 }
 void
 KeyEventDispatcher::Dispatch()
 {
     // XXX Even if unknown key is pressed, DOM key event should be
     //     dispatched since Gecko for the other platforms are implemented
     //     as so.
     if (!mDOMKeyCode && mDOMKeyNameIndex == KEY_NAME_INDEX_Unidentified) {
         VERBOSE_LOG("Got unknown key event code. "
                     "type 0x%04x code 0x%04x value %d",
                     mData.action, mData.key.keyCode, IsKeyPress());
         return;
     }
     if (IsKeyPress()) {
         DispatchKeyDownEvent();
     } else {
         DispatchKeyUpEvent();
     }
 }
 void
 KeyEventDispatcher::DispatchKeyDownEvent()
 {
     nsEventStatus status = DispatchKeyEventInternal(NS_KEY_DOWN);
     if (status != nsEventStatus_eConsumeNoDefault) {
         DispatchKeyEventInternal(NS_KEY_PRESS);
     }
 }
 void
 KeyEventDispatcher::DispatchKeyUpEvent()
 {
     DispatchKeyEventInternal(NS_KEY_UP);
 }
 class SwitchEventRunnable : public nsRunnable {
 public:
     SwitchEventRunnable(hal::SwitchEvent& aEvent) : mEvent(aEvent)
     {}
     NS_IMETHOD Run()
     {
         hal::NotifySwitchStateFromInputDevice(mEvent.device(),
           mEvent.status());
         return NS_OK;
     }
 private:
     hal::SwitchEvent mEvent;
 };
 static void
 updateHeadphoneSwitch()
 {
     hal::SwitchEvent event;
     switch (sHeadphoneState) {
     case AKEY_STATE_UP:
         event.status() = hal::SWITCH_STATE_OFF;
         break;
     case AKEY_STATE_DOWN:
         event.status() = sMicrophoneState == AKEY_STATE_DOWN ?
             hal::SWITCH_STATE_HEADSET : hal::SWITCH_STATE_HEADPHONE;
         break;
     default:
         return;
     }
     event.device() = hal::SWITCH_HEADPHONES;
     NS_DispatchToMainThread(new SwitchEventRunnable(event));
 }
 class GeckoPointerController : public PointerControllerInterface {
     float mX;
     float mY;
     int32_t mButtonState;
     InputReaderConfiguration* mConfig;
 public:
     GeckoPointerController(InputReaderConfiguration* config)
         : mX(0)
         , mY(0)
         , mButtonState(0)
         , mConfig(config)
     {}
     virtual bool getBounds(float* outMinX, float* outMinY,
             float* outMaxX, float* outMaxY) const;
     virtual void move(float deltaX, float deltaY);
     virtual void setButtonState(int32_t buttonState);
     virtual int32_t getButtonState() const;
     virtual void setPosition(float x, float y);
     virtual void getPosition(float* outX, float* outY) const;
     virtual void fade(Transition transition) {}
     virtual void unfade(Transition transition) {}
     virtual void setPresentation(Presentation presentation) {}
     virtual void setSpots(const PointerCoords* spotCoords, const uint32_t* spotIdToIndex,
             BitSet32 spotIdBits) {}
     virtual void clearSpots() {}
 };
 bool
 GeckoPointerController::getBounds(float* outMinX,
                                   float* outMinY,
                                   float* outMaxX,
                                   float* outMaxY) const
 {
     DisplayViewport viewport;
     mConfig->getDisplayInfo(false, &viewport);
     *outMinX = *outMinY = 0;
     *outMaxX = viewport.logicalRight;
     *outMaxY = viewport.logicalBottom;
     return true;
 }
 void
 GeckoPointerController::move(float deltaX, float deltaY)
 {
     float minX, minY, maxX, maxY;
     getBounds(&minX, &minY, &maxX, &maxY);
     mX = clamped(mX + deltaX, minX, maxX);
     mY = clamped(mY + deltaY, minY, maxY);
 }
 void
 GeckoPointerController::setButtonState(int32_t buttonState)
 {
     mButtonState = buttonState;
 }
 int32_t
 GeckoPointerController::getButtonState() const
 {
     return mButtonState;
 }
 void
 GeckoPointerController::setPosition(float x, float y)
 {
     mX = x;
     mY = y;
 }
 void
 GeckoPointerController::getPosition(float* outX, float* outY) const
 {
     *outX = mX;
     *outY = mY;
 }
 class GeckoInputReaderPolicy : public InputReaderPolicyInterface {
     InputReaderConfiguration mConfig;
 public:
     GeckoInputReaderPolicy() {}
     virtual void getReaderConfiguration(InputReaderConfiguration* outConfig);
     virtual sp<PointerControllerInterface> obtainPointerController(int32_t
 deviceId)
     {
         return new GeckoPointerController(&mConfig);
     };
     virtual void notifyInputDevicesChanged(const android::Vector<InputDeviceInfo>& inputDevices) {};
     virtual sp<KeyCharacterMap> getKeyboardLayoutOverlay(const String8& inputDeviceDescriptor)
     {
         return nullptr;
     };
     virtual String8 getDeviceAlias(const InputDeviceIdentifier& identifier)
     {
         return String8::empty();
     };
     void setDisplayInfo();
 protected:
     virtual ~GeckoInputReaderPolicy() {}
 };
 class GeckoInputDispatcher : public InputDispatcherInterface {
 public:
     GeckoInputDispatcher(sp<EventHub> &aEventHub)
         : mQueueLock("GeckoInputDispatcher::mQueueMutex")
         , mEventHub(aEventHub)
         , mTouchDownCount(0)
         , mKeyDownCount(0)
         , mTouchEventsFiltered(false)
         , mKeyEventsFiltered(false)
     {}
     virtual void dump(String8& dump);
     virtual void monitor() {}
     // Called on the main thread
     virtual void dispatchOnce();
     // notify* methods are called on the InputReaderThread
     virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args);
     virtual void notifyKey(const NotifyKeyArgs* args);
     virtual void notifyMotion(const NotifyMotionArgs* args);
     virtual void notifySwitch(const NotifySwitchArgs* args);
     virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
     virtual int32_t injectInputEvent(const InputEvent* event,
             int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
             uint32_t policyFlags);
     virtual void setInputWindows(const android::Vector<sp<InputWindowHandle> >& inputWindowHandles);
     virtual void setFocusedApplication(const sp<InputApplicationHandle>& inputApplicationHandle);
     virtual void setInputDispatchMode(bool enabled, bool frozen);
     virtual void setInputFilterEnabled(bool enabled) {}
     virtual bool transferTouchFocus(const sp<InputChannel>& fromChannel,
             const sp<InputChannel>& toChannel) { return true; }
     virtual status_t registerInputChannel(const sp<InputChannel>& inputChannel,
             const sp<InputWindowHandle>& inputWindowHandle, bool monitor);
     virtual status_t unregisterInputChannel(const sp<InputChannel>& inputChannel);
 protected:
     virtual ~GeckoInputDispatcher() {}
 private:
     // mQueueLock should generally be locked while using mEventQueue.
     // UserInputData is pushed on on the InputReaderThread and
     // popped and dispatched on the main thread.
     mozilla::Mutex mQueueLock;
     std::queue<UserInputData> mEventQueue;
     sp<EventHub> mEventHub;
     int mTouchDownCount;
     int mKeyDownCount;
     bool mTouchEventsFiltered;
     bool mKeyEventsFiltered;
     BitSet32 mTouchDown;
 };
 // GeckoInputReaderPolicy
 void
 GeckoInputReaderPolicy::setDisplayInfo()
 {
     static_assert(nsIScreen::ROTATION_0_DEG ==
                   DISPLAY_ORIENTATION_0,
                   "Orientation enums not matched!");
     static_assert(nsIScreen::ROTATION_90_DEG ==
                   DISPLAY_ORIENTATION_90,
                   "Orientation enums not matched!");
     static_assert(nsIScreen::ROTATION_180_DEG ==
                   DISPLAY_ORIENTATION_180,
                   "Orientation enums not matched!");
     static_assert(nsIScreen::ROTATION_270_DEG ==
                   DISPLAY_ORIENTATION_270,
                   "Orientation enums not matched!");
     DisplayViewport viewport;
     viewport.displayId = 0;
     viewport.orientation = nsScreenGonk::GetRotation();
     viewport.physicalRight = viewport.deviceWidth = gScreenBounds.width;
     viewport.physicalBottom = viewport.deviceHeight = gScreenBounds.height;
     if (viewport.orientation == DISPLAY_ORIENTATION_90 ||
         viewport.orientation == DISPLAY_ORIENTATION_270) {
         viewport.logicalRight = gScreenBounds.height;
         viewport.logicalBottom = gScreenBounds.width;
     } else {
         viewport.logicalRight = gScreenBounds.width;
         viewport.logicalBottom = gScreenBounds.height;
     }
     mConfig.setDisplayInfo(false, viewport);
 }
 void GeckoInputReaderPolicy::getReaderConfiguration(InputReaderConfiguration* outConfig)
 {
     *outConfig = mConfig;
 }
 // GeckoInputDispatcher
 void
 GeckoInputDispatcher::dump(String8& dump)
 {
 }
 static bool
 isExpired(const UserInputData& data)
 {
     uint64_t timeNowMs =
         nanosecsToMillisecs(systemTime(SYSTEM_TIME_MONOTONIC));
     return (timeNowMs - data.timeMs) > kInputExpirationThresholdMs;
 }
 void
 GeckoInputDispatcher::dispatchOnce()
 {
     UserInputData data;
     {
         MutexAutoLock lock(mQueueLock);
         if (mEventQueue.empty())
             return;
         data = mEventQueue.front();
         mEventQueue.pop();
         if (!mEventQueue.empty())
             gAppShell->NotifyNativeEvent();
     }
     switch (data.type) {
     case UserInputData::MOTION_DATA: {
         if (!mTouchDownCount) {
             // No pending events, the filter state can be updated.
             mTouchEventsFiltered = isExpired(data);
         }
         int32_t action = data.action & AMOTION_EVENT_ACTION_MASK;
         int32_t index = data.action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK;
         index >>= AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
         switch (action) {
         case AMOTION_EVENT_ACTION_DOWN:
         case AMOTION_EVENT_ACTION_POINTER_DOWN:
             if (!mTouchDown.hasBit(index)) {
                 mTouchDown.markBit(index);
                 mTouchDownCount++;
             }
             break;
         case AMOTION_EVENT_ACTION_MOVE:
         case AMOTION_EVENT_ACTION_HOVER_MOVE:
             // No need to update the count on move.
             break;
         case AMOTION_EVENT_ACTION_UP:
         case AMOTION_EVENT_ACTION_POINTER_UP:
         case AMOTION_EVENT_ACTION_OUTSIDE:
         case AMOTION_EVENT_ACTION_CANCEL:
             if (mTouchDown.hasBit(index)) {
                 mTouchDown.clearBit(index);
                 mTouchDownCount--;
             }
             break;
         default:
             break;
         }
         if (mTouchEventsFiltered) {
             return;
         }
         nsEventStatus status = nsEventStatus_eIgnore;
         if (action != AMOTION_EVENT_ACTION_HOVER_MOVE) {
             bool captured;
             status = sendTouchEvent(data, &captured);
             if (captured) {
                 return;
             }
         }
         uint32_t msg;
         switch (action) {
         case AMOTION_EVENT_ACTION_DOWN:
             msg = NS_MOUSE_BUTTON_DOWN;
             break;
         case AMOTION_EVENT_ACTION_POINTER_DOWN:
         case AMOTION_EVENT_ACTION_POINTER_UP:
         case AMOTION_EVENT_ACTION_MOVE:
         case AMOTION_EVENT_ACTION_HOVER_MOVE:
             msg = NS_MOUSE_MOVE;
             break;
         case AMOTION_EVENT_ACTION_OUTSIDE:
         case AMOTION_EVENT_ACTION_CANCEL:
         case AMOTION_EVENT_ACTION_UP:
             msg = NS_MOUSE_BUTTON_UP;
             break;
         default:
             msg = NS_EVENT_NULL;
             break;
         }
         if (msg != NS_EVENT_NULL) {
             sendMouseEvent(msg, data,
                            status != nsEventStatus_eConsumeNoDefault);
         }
         break;
     }
     case UserInputData::KEY_DATA: {
         if (!mKeyDownCount) {
             // No pending events, the filter state can be updated.
             mKeyEventsFiltered = isExpired(data);
         }
         mKeyDownCount += (data.action == AKEY_EVENT_ACTION_DOWN) ? 1 : -1;
         if (mKeyEventsFiltered) {
             return;
         }
         sp<KeyCharacterMap> kcm = mEventHub->getKeyCharacterMap(data.deviceId);
         KeyEventDispatcher dispatcher(data, kcm.get());
         dispatcher.Dispatch();
         break;
     }
     }
 }
 void
 GeckoInputDispatcher::notifyConfigurationChanged(const NotifyConfigurationChangedArgs*)
 {
 }
 void
 GeckoInputDispatcher::notifyKey(const NotifyKeyArgs* args)
 {
     UserInputData data;
     data.timeMs = nanosecsToMillisecs(args->eventTime);
     data.type = UserInputData::KEY_DATA;
     data.action = args->action;
     data.flags = args->flags;
     data.metaState = args->metaState;
     data.deviceId = args->deviceId;
     data.key.keyCode = args->keyCode;
     data.key.scanCode = args->scanCode;
     {
         MutexAutoLock lock(mQueueLock);
         mEventQueue.push(data);
     }
     gAppShell->NotifyNativeEvent();
 }
 void
 GeckoInputDispatcher::notifyMotion(const NotifyMotionArgs* args)
 {
     UserInputData data;
     data.timeMs = nanosecsToMillisecs(args->eventTime);
     data.type = UserInputData::MOTION_DATA;
     data.action = args->action;
     data.flags = args->flags;
     data.metaState = args->metaState;
     data.deviceId = args->deviceId;
     MOZ_ASSERT(args->pointerCount <= MAX_POINTERS);
     data.motion.touchCount = args->pointerCount;
     for (uint32_t i = 0; i < args->pointerCount; ++i) {
         ::Touch& touch = data.motion.touches[i];
         touch.id = args->pointerProperties[i].id;
         memcpy(&touch.coords, &args->pointerCoords[i], sizeof(*args->pointerCoords));
     }
     {
         MutexAutoLock lock(mQueueLock);
         if (!mEventQueue.empty() &&
              mEventQueue.back().type == UserInputData::MOTION_DATA &&
            ((mEventQueue.back().action & AMOTION_EVENT_ACTION_MASK) ==
              AMOTION_EVENT_ACTION_MOVE ||
             (mEventQueue.back().action & AMOTION_EVENT_ACTION_MASK) ==
              AMOTION_EVENT_ACTION_HOVER_MOVE))
             mEventQueue.back() = data;
         else
             mEventQueue.push(data);
     }
     gAppShell->NotifyNativeEvent();
 }
 void GeckoInputDispatcher::notifySwitch(const NotifySwitchArgs* args)
 {
     if (!sDevInputAudioJack)
         return;
     bool needSwitchUpdate = false;
     if (args->switchMask & (1 << SW_HEADPHONE_INSERT)) {
         sHeadphoneState = (args->switchValues & (1 << SW_HEADPHONE_INSERT)) ?
                           AKEY_STATE_DOWN : AKEY_STATE_UP;
         needSwitchUpdate = true;
     }
     if (args->switchMask & (1 << SW_MICROPHONE_INSERT)) {
         sMicrophoneState = (args->switchValues & (1 << SW_MICROPHONE_INSERT)) ?
                            AKEY_STATE_DOWN : AKEY_STATE_UP;
         needSwitchUpdate = true;
     }
     if (needSwitchUpdate)
         updateHeadphoneSwitch();
 }
 void GeckoInputDispatcher::notifyDeviceReset(const NotifyDeviceResetArgs* args)
 {
 }
 int32_t GeckoInputDispatcher::injectInputEvent(
     const InputEvent* event,
     int32_t injectorPid, int32_t injectorUid, int32_t syncMode,
     int32_t timeoutMillis, uint32_t policyFlags)
 {
     return INPUT_EVENT_INJECTION_SUCCEEDED;
 }
 void
 GeckoInputDispatcher::setInputWindows(const android::Vector<sp<InputWindowHandle> >& inputWindowHandles)
 {
 }
 void
 GeckoInputDispatcher::setFocusedApplication(const sp<InputApplicationHandle>& inputApplicationHandle)
 {
 }
 void
 GeckoInputDispatcher::setInputDispatchMode(bool enabled, bool frozen)
 {
 }
 status_t
 GeckoInputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel,
                                            const sp<InputWindowHandle>& inputWindowHandle, bool monitor)
 {
     return OK;
 }
 status_t
 GeckoInputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel)
 {
     return OK;
 }
 nsAppShell::nsAppShell()
     : mNativeCallbackRequest(false)
     , mEnableDraw(false)
     , mHandlers()
 {
     gAppShell = this;
 }
 nsAppShell::~nsAppShell()
 {
     // mReaderThread and mEventHub will both be null if InitInputDevices
     // is not called.
     if (mReaderThread.get()) {
         // We separate requestExit() and join() here so we can wake the EventHub's
         // input loop, and stop it from polling for input events
         mReaderThread->requestExit();
         mEventHub->wake();
         status_t result = mReaderThread->requestExitAndWait();
         if (result)
             LOG("Could not stop reader thread - %d", result);
     }
     gAppShell = nullptr;
 }
 nsresult
 nsAppShell::Init()
 {
     nsresult rv = nsBaseAppShell::Init();
     NS_ENSURE_SUCCESS(rv, rv);
     epollfd = epoll_create(16);
     NS_ENSURE_TRUE(epollfd >= 0, NS_ERROR_UNEXPECTED);
     int ret = pipe2(signalfds, O_NONBLOCK);
     NS_ENSURE_FALSE(ret, NS_ERROR_UNEXPECTED);
     rv = AddFdHandler(signalfds[0], pipeHandler, "");
     NS_ENSURE_SUCCESS(rv, rv);
     InitGonkMemoryPressureMonitoring();
     if (XRE_GetProcessType() == GeckoProcessType_Default) {
 #ifdef MOZ_OMX_DECODER
         android::MediaResourceManagerService::instantiate();
 #endif
 #if ANDROID_VERSION >= 18 && (defined(MOZ_OMX_DECODER) || defined(MOZ_B2G_CAMERA))
         android::FakeSurfaceComposer::instantiate();
 #endif
         GonkPermissionService::instantiate();
         // Causes the kernel timezone to be set, which in turn causes the
         // timestamps on SD cards to have the local time rather than UTC time.
         hal::SetTimezone(hal::GetTimezone());
     }
     nsCOMPtr<nsIObserverService> obsServ = GetObserverService();
     if (obsServ) {
         obsServ->AddObserver(this, "browser-ui-startup-complete", false);
         obsServ->AddObserver(this, "network-connection-state-changed", false);
     }
 #ifdef MOZ_NUWA_PROCESS
     // Make sure main thread was woken up after Nuwa fork.
     NuwaAddConstructor((void (*)(void *))&NotifyEvent, nullptr);
 #endif
     // Delay initializing input devices until the screen has been
     // initialized (and we know the resolution).
     return rv;
 }
 NS_IMETHODIMP
 nsAppShell::Observe(nsISupports* aSubject,
                     const char* aTopic,
                     const char16_t* aData)
 {
     if (!strcmp(aTopic, "network-connection-state-changed")) {
         NS_ConvertUTF16toUTF8 type(aData);
         if (!type.IsEmpty()) {
             hal::NotifyNetworkChange(hal::NetworkInformation(atoi(type.get()), 0, 0));
         }
         return NS_OK;
     } else if (!strcmp(aTopic, "browser-ui-startup-complete")) {
         if (sDevInputAudioJack) {
             sHeadphoneState  = mReader->getSwitchState(-1, AINPUT_SOURCE_SWITCH, SW_HEADPHONE_INSERT);
             sMicrophoneState = mReader->getSwitchState(-1, AINPUT_SOURCE_SWITCH, SW_MICROPHONE_INSERT);
             updateHeadphoneSwitch();
         }
         mEnableDraw = true;
         NotifyEvent();
         return NS_OK;
     }
     return nsBaseAppShell::Observe(aSubject, aTopic, aData);
 }
 NS_IMETHODIMP
 nsAppShell::Exit()
 {
     OrientationObserver::ShutDown();
     nsCOMPtr<nsIObserverService> obsServ = GetObserverService();
     if (obsServ) {
         obsServ->RemoveObserver(this, "browser-ui-startup-complete");
         obsServ->RemoveObserver(this, "network-connection-state-changed");
     }
     return nsBaseAppShell::Exit();
 }
 void
 nsAppShell::InitInputDevices()
 {
     char value[PROPERTY_VALUE_MAX];
     property_get("ro.moz.devinputjack", value, "0");
     sDevInputAudioJack = !strcmp(value, "1");
     sHeadphoneState = AKEY_STATE_UNKNOWN;
     sMicrophoneState = AKEY_STATE_UNKNOWN;
     mEventHub = new EventHub();
     mReaderPolicy = new GeckoInputReaderPolicy();
     mReaderPolicy->setDisplayInfo();
     mDispatcher = new GeckoInputDispatcher(mEventHub);
     mReader = new InputReader(mEventHub, mReaderPolicy, mDispatcher);
     mReaderThread = new InputReaderThread(mReader);
     status_t result = mReaderThread->run("InputReader", PRIORITY_URGENT_DISPLAY);
     if (result) {
         LOG("Failed to initialize InputReader thread, bad things are going to happen...");
     }
 }
 nsresult
 nsAppShell::AddFdHandler(int fd, FdHandlerCallback handlerFunc,
                          const char* deviceName)
 {
     epoll_event event = {
         EPOLLIN,
         { 0 }
     };
     FdHandler *handler = mHandlers.AppendElement();
     handler->fd = fd;
     strncpy(handler->name, deviceName, sizeof(handler->name) - 1);
     handler->func = handlerFunc;
     event.data.u32 = mHandlers.Length() - 1;
     return epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &event) ?
            NS_ERROR_UNEXPECTED : NS_OK;
 }
 void
 nsAppShell::ScheduleNativeEventCallback()
 {
     mNativeCallbackRequest = true;
     NotifyEvent();
 }
 bool
 nsAppShell::ProcessNextNativeEvent(bool mayWait)
 {
     PROFILER_LABEL("nsAppShell", "ProcessNextNativeEvent");
     epoll_event events[16] = {{ 0 }};
     int event_count;
     {
         PROFILER_LABEL("nsAppShell", "ProcessNextNativeEvent::Wait");
         if ((event_count = epoll_wait(epollfd, events, 16,  mayWait ? -1 : 0)) <= 0)
             return true;
     }
     for (int i = 0; i < event_count; i++)
         mHandlers[events[i].data.u32].run();
     if (mDispatcher.get())
         mDispatcher->dispatchOnce();
     // NativeEventCallback always schedules more if it needs it
     // so we can coalesce these.
     // See the implementation in nsBaseAppShell.cpp for more info
     if (mNativeCallbackRequest) {
         mNativeCallbackRequest = false;
         NativeEventCallback();
     }
     if (gDrawRequest && mEnableDraw) {
         gDrawRequest = false;
         nsWindow::DoDraw();
     }
     return true;
 }
 void
 nsAppShell::NotifyNativeEvent()
 {
     write(signalfds[1], "w", 1);
 }
 /* static */ void
 nsAppShell::NotifyScreenInitialized()
 {
     gAppShell->InitInputDevices();
     // Getting the instance of OrientationObserver to initialize it.
     OrientationObserver::GetInstance();
 }
 /* static */ void
 nsAppShell::NotifyScreenRotation()
 {
     gAppShell->mReaderPolicy->setDisplayInfo();
     gAppShell->mReader->requestRefreshConfiguration(InputReaderConfiguration::CHANGE_DISPLAY_INFO);
     hal::NotifyScreenConfigurationChange(nsScreenGonk::GetConfiguration());
 }

The Tor Browser / annotate

widget/gonk/nsAppShell.cpp@6474c204b198 (annotated)

widget/gonk/nsAppShell.cpp