492 lines
14 KiB
C++
492 lines
14 KiB
C++
/*
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* Copyright (C) 2010 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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#ifndef _UI_INPUT_H
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#define _UI_INPUT_H
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/**
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* Native input event structures.
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*/
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#include <android/input.h>
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#include <utils/Vector.h>
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#include <utils/KeyedVector.h>
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#include <utils/Timers.h>
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#include <utils/RefBase.h>
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#include <utils/String8.h>
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/*
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* Additional private constants not defined in ndk/ui/input.h.
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*/
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enum {
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/*
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* Private control to determine when an app is tracking a key sequence.
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*/
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AKEY_EVENT_FLAG_START_TRACKING = 0x40000000
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};
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/*
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* Maximum number of pointers supported per motion event.
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* Smallest number of pointers is 1.
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*/
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#define MAX_POINTERS 10
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/*
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* Maximum pointer id value supported in a motion event.
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* Smallest pointer id is 0.
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* (This is limited by our use of BitSet32 to track pointer assignments.)
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*/
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#define MAX_POINTER_ID 31
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/*
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* Declare a concrete type for the NDK's input event forward declaration.
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*/
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struct AInputEvent {
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virtual ~AInputEvent() { }
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};
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/*
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* Declare a concrete type for the NDK's input device forward declaration.
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*/
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struct AInputDevice {
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virtual ~AInputDevice() { }
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};
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namespace android {
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/*
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* Flags that flow alongside events in the input dispatch system to help with certain
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* policy decisions such as waking from device sleep.
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*/
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enum {
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/* These flags originate in RawEvents and are generally set in the key map.
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* See also labels for policy flags in KeycodeLabels.h. */
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POLICY_FLAG_WAKE = 0x00000001,
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POLICY_FLAG_WAKE_DROPPED = 0x00000002,
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POLICY_FLAG_SHIFT = 0x00000004,
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POLICY_FLAG_CAPS_LOCK = 0x00000008,
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POLICY_FLAG_ALT = 0x00000010,
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POLICY_FLAG_ALT_GR = 0x00000020,
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POLICY_FLAG_MENU = 0x00000040,
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POLICY_FLAG_LAUNCHER = 0x00000080,
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POLICY_FLAG_VIRTUAL = 0x00000100,
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POLICY_FLAG_RAW_MASK = 0x0000ffff,
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/* These flags are set by the input dispatcher. */
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// Indicates that the input event was injected.
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POLICY_FLAG_INJECTED = 0x01000000,
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/* These flags are set by the input reader policy as it intercepts each event. */
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// Indicates that the screen was off when the event was received and the event
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// should wake the device.
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POLICY_FLAG_WOKE_HERE = 0x10000000,
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// Indicates that the screen was dim when the event was received and the event
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// should brighten the device.
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POLICY_FLAG_BRIGHT_HERE = 0x20000000,
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};
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/*
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* Describes the basic configuration of input devices that are present.
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*/
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struct InputConfiguration {
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enum {
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TOUCHSCREEN_UNDEFINED = 0,
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TOUCHSCREEN_NOTOUCH = 1,
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TOUCHSCREEN_STYLUS = 2,
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TOUCHSCREEN_FINGER = 3
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};
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enum {
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KEYBOARD_UNDEFINED = 0,
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KEYBOARD_NOKEYS = 1,
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KEYBOARD_QWERTY = 2,
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KEYBOARD_12KEY = 3
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};
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enum {
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NAVIGATION_UNDEFINED = 0,
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NAVIGATION_NONAV = 1,
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NAVIGATION_DPAD = 2,
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NAVIGATION_TRACKBALL = 3,
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NAVIGATION_WHEEL = 4
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};
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int32_t touchScreen;
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int32_t keyboard;
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int32_t navigation;
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};
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/*
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* Pointer coordinate data.
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*/
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struct PointerCoords {
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float x;
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float y;
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float pressure;
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float size;
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float touchMajor;
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float touchMinor;
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float toolMajor;
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float toolMinor;
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float orientation;
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};
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/*
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* Input events.
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*/
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class InputEvent : public AInputEvent {
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public:
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virtual ~InputEvent() { }
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virtual int32_t getType() const = 0;
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inline int32_t getDeviceId() const { return mDeviceId; }
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inline int32_t getSource() const { return mSource; }
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protected:
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void initialize(int32_t deviceId, int32_t source);
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void initialize(const InputEvent& from);
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private:
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int32_t mDeviceId;
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int32_t mSource;
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};
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/*
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* Key events.
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*/
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class KeyEvent : public InputEvent {
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public:
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virtual ~KeyEvent() { }
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virtual int32_t getType() const { return AINPUT_EVENT_TYPE_KEY; }
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inline int32_t getAction() const { return mAction; }
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inline int32_t getFlags() const { return mFlags; }
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inline int32_t getKeyCode() const { return mKeyCode; }
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inline int32_t getScanCode() const { return mScanCode; }
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inline int32_t getMetaState() const { return mMetaState; }
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inline int32_t getRepeatCount() const { return mRepeatCount; }
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inline nsecs_t getDownTime() const { return mDownTime; }
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inline nsecs_t getEventTime() const { return mEventTime; }
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// Return true if this event may have a default action implementation.
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static bool hasDefaultAction(int32_t keyCode);
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bool hasDefaultAction() const;
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// Return true if this event represents a system key.
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static bool isSystemKey(int32_t keyCode);
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bool isSystemKey() const;
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void initialize(
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int32_t deviceId,
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int32_t source,
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int32_t action,
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int32_t flags,
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int32_t keyCode,
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int32_t scanCode,
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int32_t metaState,
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int32_t repeatCount,
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nsecs_t downTime,
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nsecs_t eventTime);
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void initialize(const KeyEvent& from);
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private:
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int32_t mAction;
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int32_t mFlags;
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int32_t mKeyCode;
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int32_t mScanCode;
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int32_t mMetaState;
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int32_t mRepeatCount;
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nsecs_t mDownTime;
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nsecs_t mEventTime;
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};
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/*
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* Motion events.
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*/
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class MotionEvent : public InputEvent {
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public:
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virtual ~MotionEvent() { }
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virtual int32_t getType() const { return AINPUT_EVENT_TYPE_MOTION; }
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inline int32_t getAction() const { return mAction; }
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inline int32_t getFlags() const { return mFlags; }
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inline int32_t getEdgeFlags() const { return mEdgeFlags; }
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inline int32_t getMetaState() const { return mMetaState; }
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inline float getXOffset() const { return mXOffset; }
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inline float getYOffset() const { return mYOffset; }
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inline float getXPrecision() const { return mXPrecision; }
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inline float getYPrecision() const { return mYPrecision; }
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inline nsecs_t getDownTime() const { return mDownTime; }
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inline size_t getPointerCount() const { return mPointerIds.size(); }
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inline int32_t getPointerId(size_t pointerIndex) const { return mPointerIds[pointerIndex]; }
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inline nsecs_t getEventTime() const { return mSampleEventTimes[getHistorySize()]; }
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inline float getRawX(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).x;
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}
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inline float getRawY(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).y;
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}
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inline float getX(size_t pointerIndex) const {
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return getRawX(pointerIndex) + mXOffset;
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}
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inline float getY(size_t pointerIndex) const {
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return getRawY(pointerIndex) + mYOffset;
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}
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inline float getPressure(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).pressure;
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}
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inline float getSize(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).size;
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}
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inline float getTouchMajor(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).touchMajor;
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}
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inline float getTouchMinor(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).touchMinor;
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}
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inline float getToolMajor(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).toolMajor;
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}
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inline float getToolMinor(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).toolMinor;
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}
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inline float getOrientation(size_t pointerIndex) const {
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return getCurrentPointerCoords(pointerIndex).orientation;
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}
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inline size_t getHistorySize() const { return mSampleEventTimes.size() - 1; }
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inline nsecs_t getHistoricalEventTime(size_t historicalIndex) const {
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return mSampleEventTimes[historicalIndex];
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}
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inline float getHistoricalRawX(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).x;
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}
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inline float getHistoricalRawY(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).y;
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}
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inline float getHistoricalX(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalRawX(pointerIndex, historicalIndex) + mXOffset;
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}
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inline float getHistoricalY(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalRawY(pointerIndex, historicalIndex) + mYOffset;
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}
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inline float getHistoricalPressure(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).pressure;
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}
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inline float getHistoricalSize(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).size;
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}
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inline float getHistoricalTouchMajor(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).touchMajor;
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}
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inline float getHistoricalTouchMinor(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).touchMinor;
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}
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inline float getHistoricalToolMajor(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).toolMajor;
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}
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inline float getHistoricalToolMinor(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).toolMinor;
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}
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inline float getHistoricalOrientation(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalPointerCoords(pointerIndex, historicalIndex).orientation;
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}
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void initialize(
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int32_t deviceId,
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int32_t source,
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int32_t action,
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int32_t flags,
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int32_t edgeFlags,
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int32_t metaState,
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float xOffset,
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float yOffset,
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float xPrecision,
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float yPrecision,
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nsecs_t downTime,
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nsecs_t eventTime,
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size_t pointerCount,
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const int32_t* pointerIds,
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const PointerCoords* pointerCoords);
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void addSample(
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nsecs_t eventTime,
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const PointerCoords* pointerCoords);
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void offsetLocation(float xOffset, float yOffset);
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// Low-level accessors.
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inline const int32_t* getPointerIds() const { return mPointerIds.array(); }
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inline const nsecs_t* getSampleEventTimes() const { return mSampleEventTimes.array(); }
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inline const PointerCoords* getSamplePointerCoords() const {
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return mSamplePointerCoords.array();
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}
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private:
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int32_t mAction;
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int32_t mFlags;
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int32_t mEdgeFlags;
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int32_t mMetaState;
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float mXOffset;
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float mYOffset;
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float mXPrecision;
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float mYPrecision;
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nsecs_t mDownTime;
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Vector<int32_t> mPointerIds;
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Vector<nsecs_t> mSampleEventTimes;
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Vector<PointerCoords> mSamplePointerCoords;
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inline const PointerCoords& getCurrentPointerCoords(size_t pointerIndex) const {
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return mSamplePointerCoords[getHistorySize() * getPointerCount() + pointerIndex];
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}
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inline const PointerCoords& getHistoricalPointerCoords(
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size_t pointerIndex, size_t historicalIndex) const {
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return mSamplePointerCoords[historicalIndex * getPointerCount() + pointerIndex];
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}
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};
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/*
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* Input event factory.
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*/
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class InputEventFactoryInterface {
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protected:
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virtual ~InputEventFactoryInterface() { }
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public:
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InputEventFactoryInterface() { }
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virtual KeyEvent* createKeyEvent() = 0;
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virtual MotionEvent* createMotionEvent() = 0;
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};
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/*
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* A simple input event factory implementation that uses a single preallocated instance
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* of each type of input event that are reused for each request.
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*/
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class PreallocatedInputEventFactory : public InputEventFactoryInterface {
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public:
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PreallocatedInputEventFactory() { }
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virtual ~PreallocatedInputEventFactory() { }
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virtual KeyEvent* createKeyEvent() { return & mKeyEvent; }
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virtual MotionEvent* createMotionEvent() { return & mMotionEvent; }
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private:
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KeyEvent mKeyEvent;
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MotionEvent mMotionEvent;
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};
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/*
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* Describes the characteristics and capabilities of an input device.
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*/
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class InputDeviceInfo {
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public:
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InputDeviceInfo();
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InputDeviceInfo(const InputDeviceInfo& other);
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~InputDeviceInfo();
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struct MotionRange {
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float min;
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float max;
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float flat;
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float fuzz;
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};
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void initialize(int32_t id, const String8& name);
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inline int32_t getId() const { return mId; }
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inline const String8 getName() const { return mName; }
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inline uint32_t getSources() const { return mSources; }
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const MotionRange* getMotionRange(int32_t rangeType) const;
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void addSource(uint32_t source);
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void addMotionRange(int32_t rangeType, float min, float max, float flat, float fuzz);
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void addMotionRange(int32_t rangeType, const MotionRange& range);
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inline void setKeyboardType(int32_t keyboardType) { mKeyboardType = keyboardType; }
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inline int32_t getKeyboardType() const { return mKeyboardType; }
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inline const KeyedVector<int32_t, MotionRange> getMotionRanges() const {
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return mMotionRanges;
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}
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private:
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int32_t mId;
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String8 mName;
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uint32_t mSources;
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int32_t mKeyboardType;
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KeyedVector<int32_t, MotionRange> mMotionRanges;
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};
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} // namespace android
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#endif // _UI_INPUT_H
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