c968c3a9c7
The kernel can now publish a property describing the layout of virtual hardware buttons on the touchscreen. These outside of the display area (outside of the absolute x and y controller range the driver reports), and when the user presses on them a key event will be generated rather than a touch event. This also includes a number of tweaks to the absolute controller processing to make things work better on the new screens. For example, we now reject down events outside of the display area. Still left to be done is the ability to cancel a key down event, so the user can slide up from the virtual keys to the touch screen without causing a virtual key to execute.
152 lines
4.2 KiB
C++
152 lines
4.2 KiB
C++
/*
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* Copyright (C) 2005 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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#ifndef _RUNTIME_EVENT_HUB_H
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#define _RUNTIME_EVENT_HUB_H
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#include <utils/String8.h>
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#include <utils/threads.h>
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#include <utils/Log.h>
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#include <utils/threads.h>
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#include <utils/List.h>
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#include <utils/Errors.h>
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#include <linux/input.h>
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struct pollfd;
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namespace android {
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class KeyLayoutMap;
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/*
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* Grand Central Station for events. With a single call to waitEvent()
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* you can wait for:
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* - input events from the keypad of a real device
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* - input events and meta-events (e.g. "quit") from the simulator
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* - synthetic events from the runtime (e.g. "URL fetch completed")
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* - real or forged "vsync" events
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*
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* Do not instantiate this class. Instead, call startUp().
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*/
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class EventHub : public RefBase
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{
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public:
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EventHub();
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status_t errorCheck() const;
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// bit fields for classes of devices.
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enum {
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CLASS_KEYBOARD = 0x00000001,
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CLASS_ALPHAKEY = 0x00000002,
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CLASS_TOUCHSCREEN = 0x00000004,
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CLASS_TRACKBALL = 0x00000008
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};
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uint32_t getDeviceClasses(int32_t deviceId) const;
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String8 getDeviceName(int32_t deviceId) const;
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int getAbsoluteInfo(int32_t deviceId, int axis, int *outMinValue,
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int* outMaxValue, int* outFlat, int* outFuzz) const;
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int getSwitchState(int sw) const;
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int getSwitchState(int32_t deviceId, int sw) const;
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int getScancodeState(int key) const;
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int getScancodeState(int32_t deviceId, int key) const;
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int getKeycodeState(int key) const;
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int getKeycodeState(int32_t deviceId, int key) const;
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status_t scancodeToKeycode(int32_t deviceId, int scancode,
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int32_t* outKeycode, uint32_t* outFlags) const;
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// special type codes when devices are added/removed.
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enum {
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DEVICE_ADDED = 0x10000000,
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DEVICE_REMOVED = 0x20000000
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};
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// examine key input devices for specific framework keycode support
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bool hasKeys(size_t numCodes, int32_t* keyCodes, uint8_t* outFlags);
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virtual bool getEvent(int32_t* outDeviceId, int32_t* outType,
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int32_t* outScancode, int32_t* outKeycode, uint32_t *outFlags,
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int32_t* outValue, nsecs_t* outWhen);
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protected:
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virtual ~EventHub();
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virtual void onFirstRef();
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private:
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bool openPlatformInput(void);
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int32_t convertDeviceKey_TI_P2(int code);
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int open_device(const char *device);
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int close_device(const char *device);
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int scan_dir(const char *dirname);
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int read_notify(int nfd);
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status_t mError;
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struct device_t {
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const int32_t id;
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const String8 path;
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String8 name;
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uint32_t classes;
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uint8_t* keyBitmask;
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KeyLayoutMap* layoutMap;
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String8 keylayoutFilename;
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device_t* next;
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device_t(int32_t _id, const char* _path);
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~device_t();
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};
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device_t* getDevice(int32_t deviceId) const;
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// Protect all internal state.
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mutable Mutex mLock;
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bool mHaveFirstKeyboard;
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int32_t mFirstKeyboardId; // the API is that the built-in keyboard is id 0, so map it
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struct device_ent {
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device_t* device;
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uint32_t seq;
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};
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device_ent *mDevicesById;
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int mNumDevicesById;
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device_t *mOpeningDevices;
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device_t *mClosingDevices;
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device_t **mDevices;
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struct pollfd *mFDs;
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int mFDCount;
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// device ids that report particular switches.
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#ifdef EV_SW
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int32_t mSwitches[SW_MAX+1];
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#endif
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};
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}; // namespace android
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#endif // _RUNTIME_EVENT_HUB_H
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