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gecko/widget/gonk/nsAppShell.cpp

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/* -*- 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.
*/
#define _GNU_SOURCE
#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 "base/basictypes.h"
#include "nscore.h"
#include "mozilla/FileUtils.h"
#include "mozilla/Hal.h"
#include "mozilla/Mutex.h"
#include "mozilla/Services.h"
#include "nsAppShell.h"
#include "nsDOMTouchEvent.h"
#include "nsGkAtoms.h"
#include "nsGUIEvent.h"
#include "nsIObserverService.h"
#include "nsIScreen.h"
#include "nsScreenManagerGonk.h"
#include "nsWindow.h"
#include "OrientationObserver.h"
#include "android/log.h"
#include "libui/EventHub.h"
#include "libui/InputReader.h"
#include "libui/InputDispatcher.h"
#include "sampler.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;
bool gDrawRequest = false;
static nsAppShell *gAppShell = NULL;
static int epollfd = 0;
static int signalfds[2] = {0};
namespace mozilla {
bool ProcessNextEvent()
{
return gAppShell->ProcessNextNativeEvent(true);
}
void NotifyEvent()
{
gAppShell->NotifyNativeEvent();
}
}
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;
union {
struct {
int32_t keyCode;
int32_t scanCode;
} key;
struct {
int32_t touchCount;
Touch touches[MAX_POINTERS];
} motion;
};
};
static void
sendMouseEvent(uint32_t msg, uint64_t timeMs, int x, int y, bool forwardToChildren)
{
nsMouseEvent event(true, msg, NULL,
nsMouseEvent::eReal, nsMouseEvent::eNormal);
event.refPoint.x = x;
event.refPoint.y = y;
event.time = timeMs;
event.button = nsMouseEvent::eLeftButton;
if (msg != NS_MOUSE_MOVE)
event.clickCount = 1;
if (!forwardToChildren)
event.flags |= NS_EVENT_FLAG_DONT_FORWARD_CROSS_PROCESS;
nsWindow::DispatchInputEvent(event);
}
static void
addDOMTouch(UserInputData& data, nsTouchEvent& event, int i)
{
const Touch& touch = data.motion.touches[i];
event.touches.AppendElement(
new nsDOMTouch(touch.id,
nsIntPoint(touch.coords.getX(), touch.coords.getY()),
nsIntPoint(touch.coords.getAxisValue(AMOTION_EVENT_AXIS_SIZE),
touch.coords.getAxisValue(AMOTION_EVENT_AXIS_SIZE)),
0,
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;
}
nsTouchEvent event(true, msg, NULL);
event.time = data.timeMs;
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);
}
static nsEventStatus
sendKeyEventWithMsg(uint32_t keyCode,
uint32_t msg,
uint64_t timeMs,
uint32_t flags)
{
nsKeyEvent event(true, msg, NULL);
event.keyCode = keyCode;
event.location = nsIDOMKeyEvent::DOM_KEY_LOCATION_MOBILE;
event.time = timeMs;
event.flags |= flags;
return nsWindow::DispatchInputEvent(event);
}
static void
sendKeyEvent(uint32_t keyCode, bool down, uint64_t timeMs)
{
nsEventStatus status =
sendKeyEventWithMsg(keyCode, down ? NS_KEY_DOWN : NS_KEY_UP, timeMs, 0);
if (down) {
sendKeyEventWithMsg(keyCode, NS_KEY_PRESS, timeMs,
status == nsEventStatus_eConsumeNoDefault ?
NS_EVENT_FLAG_NO_DEFAULT : 0);
}
}
// Defines kKeyMapping
#include "GonkKeyMapping.h"
static void
maybeSendKeyEvent(int keyCode, bool pressed, uint64_t timeMs)
{
if (keyCode < ArrayLength(kKeyMapping) && kKeyMapping[keyCode])
sendKeyEvent(kKeyMapping[keyCode], pressed, timeMs);
else
VERBOSE_LOG("Got unknown key event code. type 0x%04x code 0x%04x value %d",
keyCode, pressed);
}
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
{
int32_t width, height, orientation;
mConfig->getDisplayInfo(0, false, &width, &height, &orientation);
*outMinX = *outMinY = 0;
if (orientation == DISPLAY_ORIENTATION_90 ||
orientation == DISPLAY_ORIENTATION_270) {
*outMaxX = height;
*outMaxY = width;
} else {
*outMaxX = width;
*outMaxY = height;
}
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);
};
void setDisplayInfo();
protected:
virtual ~GeckoInputReaderPolicy() {}
};
class GeckoInputDispatcher : public InputDispatcherInterface {
public:
GeckoInputDispatcher()
: mQueueLock("GeckoInputDispatcher::mQueueMutex")
{}
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 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;
};
// GeckoInputReaderPolicy
void
GeckoInputReaderPolicy::setDisplayInfo()
{
MOZ_STATIC_ASSERT(nsIScreen::ROTATION_0_DEG ==
DISPLAY_ORIENTATION_0,
"Orientation enums not matched!");
MOZ_STATIC_ASSERT(nsIScreen::ROTATION_90_DEG ==
DISPLAY_ORIENTATION_90,
"Orientation enums not matched!");
MOZ_STATIC_ASSERT(nsIScreen::ROTATION_180_DEG ==
DISPLAY_ORIENTATION_180,
"Orientation enums not matched!");
MOZ_STATIC_ASSERT(nsIScreen::ROTATION_270_DEG ==
DISPLAY_ORIENTATION_270,
"Orientation enums not matched!");
mConfig.setDisplayInfo(0, false, gScreenBounds.width, gScreenBounds.height, nsScreenGonk::GetRotation());
}
void GeckoInputReaderPolicy::getReaderConfiguration(InputReaderConfiguration* outConfig)
{
*outConfig = mConfig;
}
// GeckoInputDispatcher
void
GeckoInputDispatcher::dump(String8& dump)
{
}
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: {
nsEventStatus status = nsEventStatus_eIgnore;
if ((data.action & AMOTION_EVENT_ACTION_MASK) !=
AMOTION_EVENT_ACTION_HOVER_MOVE) {
bool captured;
status = sendTouchEvent(data, &captured);
if (captured) {
return;
}
}
uint32_t msg;
switch (data.action & AMOTION_EVENT_ACTION_MASK) {
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;
}
sendMouseEvent(msg,
data.timeMs,
data.motion.touches[0].coords.getX(),
data.motion.touches[0].coords.getY(),
status != nsEventStatus_eConsumeNoDefault);
break;
}
case UserInputData::KEY_DATA:
maybeSendKeyEvent(data.key.keyCode,
data.action == AKEY_EVENT_ACTION_DOWN,
data.timeMs);
break;
}
}
void
GeckoInputDispatcher::notifyConfigurationChanged(const NotifyConfigurationChangedArgs*)
{
}
static uint64_t
nanosecsToMillisecs(nsecs_t nsecs)
{
return nsecs / 1000000;
}
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.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;
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)
{
}
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 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)
, mHandlers()
{
gAppShell = this;
}
nsAppShell::~nsAppShell()
{
// 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 = NULL;
}
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);
// Delay initializing input devices until the screen has been
// initialized (and we know the resolution).
return rv;
}
NS_IMETHODIMP
nsAppShell::Exit()
{
OrientationObserver::ShutDown();
return nsBaseAppShell::Exit();
}
void
nsAppShell::InitInputDevices()
{
mEventHub = new EventHub();
mReaderPolicy = new GeckoInputReaderPolicy();
mReaderPolicy->setDisplayInfo();
mDispatcher = new GeckoInputDispatcher();
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)
{
SAMPLE_LABEL("nsAppShell", "ProcessNextNativeEvent");
epoll_event events[16] = {{ 0 }};
int event_count;
{
SAMPLE_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) {
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());
}
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