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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:45 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:45 -0800
commitd83a98f4ce9cfa908f5c54bbd70f03eec07e7553 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /include/ui/EventHub.h
parent076357b8567458d4b6dfdcf839ef751634cd2bfb (diff)
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auto import from //depot/cupcake/@135843
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-/*
- * Copyright (C) 2005 The Android Open Source Project
- *
- * 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 _RUNTIME_EVENT_HUB_H
-#define _RUNTIME_EVENT_HUB_H
-
-#include <utils/String8.h>
-#include <utils/threads.h>
-#include <utils.h>
-
-#include <linux/input.h>
-
-struct pollfd;
-
-namespace android {
-
-class KeyLayoutMap;
-
-/*
- * Grand Central Station for events. With a single call to waitEvent()
- * you can wait for:
- * - input events from the keypad of a real device
- * - input events and meta-events (e.g. "quit") from the simulator
- * - synthetic events from the runtime (e.g. "URL fetch completed")
- * - real or forged "vsync" events
- *
- * Do not instantiate this class. Instead, call startUp().
- */
-class EventHub : public RefBase
-{
-public:
- EventHub();
-
- status_t errorCheck() const;
-
- // bit fields for classes of devices.
- enum {
- CLASS_KEYBOARD = 0x00000001,
- CLASS_ALPHAKEY = 0x00000002,
- CLASS_TOUCHSCREEN = 0x00000004,
- CLASS_TRACKBALL = 0x00000008
- };
- uint32_t getDeviceClasses(int32_t deviceId) const;
-
- String8 getDeviceName(int32_t deviceId) const;
-
- int getAbsoluteInfo(int32_t deviceId, int axis, int *outMinValue,
- int* outMaxValue, int* outFlat, int* outFuzz) const;
-
- int getSwitchState(int sw) const;
- int getSwitchState(int32_t deviceId, int sw) const;
-
- int getScancodeState(int key) const;
- int getScancodeState(int32_t deviceId, int key) const;
-
- int getKeycodeState(int key) const;
- int getKeycodeState(int32_t deviceId, int key) const;
-
- // special type codes when devices are added/removed.
- enum {
- DEVICE_ADDED = 0x10000000,
- DEVICE_REMOVED = 0x20000000
- };
-
- // examine key input devices for specific framework keycode support
- bool hasKeys(size_t numCodes, int32_t* keyCodes, uint8_t* outFlags);
-
- virtual bool getEvent(int32_t* outDeviceId, int32_t* outType,
- int32_t* outScancode, int32_t* outKeycode, uint32_t *outFlags,
- int32_t* outValue, nsecs_t* outWhen);
-
-protected:
- virtual ~EventHub();
- virtual void onFirstRef();
-
-private:
- bool openPlatformInput(void);
- int32_t convertDeviceKey_TI_P2(int code);
-
- int open_device(const char *device);
- int close_device(const char *device);
- int scan_dir(const char *dirname);
- int read_notify(int nfd);
-
- status_t mError;
-
- struct device_t {
- const int32_t id;
- const String8 path;
- String8 name;
- uint32_t classes;
- uint8_t* keyBitmask;
- KeyLayoutMap* layoutMap;
- String8 keylayoutFilename;
- device_t* next;
-
- device_t(int32_t _id, const char* _path);
- ~device_t();
- };
-
- device_t* getDevice(int32_t deviceId) const;
-
- // Protect all internal state.
- mutable Mutex mLock;
-
- bool mHaveFirstKeyboard;
- int32_t mFirstKeyboardId; // the API is that the build in keyboard is id 0, so map it
-
- struct device_ent {
- device_t* device;
- uint32_t seq;
- };
- device_ent *mDevicesById;
- int mNumDevicesById;
-
- device_t *mOpeningDevices;
- device_t *mClosingDevices;
-
- device_t **mDevices;
- struct pollfd *mFDs;
- int mFDCount;
-
- // device ids that report particular switches.
-#ifdef EV_SW
- int32_t mSwitches[SW_MAX+1];
-#endif
-};
-
-}; // namespace android
-
-#endif // _RUNTIME_EVENT_HUB_H