#include "athena/screen/public/screen_manager.h"
#include "athena/system/orientation_controller.h"
#include "base/bind.h"
-#include "base/file_util.h"
#include "base/files/file_path_watcher.h"
+#include "base/files/file_util.h"
#include "base/message_loop/message_loop.h"
#include "base/task_runner.h"
namespace {
-// Path of the socket which the sensor daemon creates.
-const char kSocketPath[] = "/dev/sensors/orientation";
-
// Threshold after which to rotate in a given direction.
const int kGravityThreshold = 6.0f;
-// Minimum delay before triggering another orientation change.
-const int kOrientationChangeDelayNS = 500000000;
-
-enum SensorType {
- SENSOR_ACCELEROMETER,
- SENSOR_LIGHT,
- SENSOR_PROXIMITY
-};
-
-// A sensor event from the device.
-struct DeviceSensorEvent {
- // The type of event from the SensorType enum above.
- int32_t type;
-
- // The time in nanoseconds at which the event happened.
- int64_t timestamp;
-
- union {
- // Accelerometer X,Y,Z values in SI units (m/s^2) including gravity.
- // The orientation is described at
- // http://www.html5rocks.com/en/tutorials/device/orientation/.
- float data[3];
-
- // Ambient (room) temperature in degrees Celcius.
- float temperature;
-
- // Proximity sensor distance in centimeters.
- float distance;
-
- // Ambient light level in SI lux units.
- float light;
- };
-};
-
} // namespace
-OrientationController::OrientationController(
- scoped_refptr<base::TaskRunner> io_task_runner)
- : DeviceSocketListener(kSocketPath, sizeof(DeviceSensorEvent)),
- last_orientation_change_time_(0),
- weak_factory_(this) {
- CHECK(base::MessageLoopForUI::current());
- ui_task_runner_ = base::MessageLoopForUI::current()->task_runner();
- io_task_runner->PostTask(FROM_HERE, base::Bind(
- &OrientationController::WatchForSocketPathOnIO,
- make_scoped_refptr<OrientationController>(this)));
+OrientationController::OrientationController() {
}
-OrientationController::~OrientationController() {
+void OrientationController::InitWith(
+ scoped_refptr<base::TaskRunner> blocking_task_runner) {
+ accelerometer_reader_.reset(
+ new chromeos::AccelerometerReader(blocking_task_runner, this));
}
-void OrientationController::WatchForSocketPathOnIO() {
- CHECK(base::MessageLoopForIO::current());
- if (base::PathExists(base::FilePath(kSocketPath))) {
- ui_task_runner_->PostTask(FROM_HERE,
- base::Bind(&OrientationController::StartListening,
- make_scoped_refptr<OrientationController>(this)));
- } else {
- watcher_.reset(new base::FilePathWatcher);
- watcher_->Watch(
- base::FilePath(kSocketPath), false,
- base::Bind(&OrientationController::OnFilePathChangedOnIO,
- make_scoped_refptr<OrientationController>(this)));
- }
+OrientationController::~OrientationController() {
}
-void OrientationController::OnFilePathChangedOnIO(const base::FilePath& path,
- bool error) {
- watcher_.reset();
- if (error)
- return;
-
- ui_task_runner_->PostTask(FROM_HERE,
- base::Bind(&OrientationController::StartListening,
- make_scoped_refptr<OrientationController>(this)));
+void OrientationController::Shutdown() {
+ accelerometer_reader_.reset();
}
-void OrientationController::OnDataAvailableOnIO(const void* data) {
- const DeviceSensorEvent* event =
- static_cast<const DeviceSensorEvent*>(data);
- if (event->type != SENSOR_ACCELEROMETER)
+void OrientationController::HandleAccelerometerUpdate(
+ const ui::AccelerometerUpdate& update) {
+ if (!update.has(ui::ACCELEROMETER_SOURCE_SCREEN))
return;
- float gravity_x = event->data[0];
- float gravity_y = event->data[1];
+ float gravity_x = update.get(ui::ACCELEROMETER_SOURCE_SCREEN).x();
+ float gravity_y = update.get(ui::ACCELEROMETER_SOURCE_SCREEN).y();
gfx::Display::Rotation rotation;
if (gravity_x < -kGravityThreshold) {
rotation = gfx::Display::ROTATE_270;
return;
}
- if (rotation == current_rotation_ ||
- event->timestamp - last_orientation_change_time_ <
- kOrientationChangeDelayNS) {
+ if (rotation == current_rotation_)
return;
- }
- last_orientation_change_time_ = event->timestamp;
current_rotation_ = rotation;
- ui_task_runner_->PostTask(FROM_HERE,
- base::Bind(&OrientationController::RotateOnUI,
- make_scoped_refptr<OrientationController>(this), rotation));
-}
-
-void OrientationController::RotateOnUI(gfx::Display::Rotation rotation) {
- ScreenManager* screen_manager = ScreenManager::Get();
- // Since this is called from the IO thread, the screen manager may no longer
- // exist.
- if (screen_manager)
- screen_manager->SetRotation(rotation);
+ ScreenManager::Get()->SetRotation(rotation);
}
} // namespace athena