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681 lines
20 KiB
681 lines
20 KiB
/*
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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 _LIBINPUT_INPUT_H
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#define _LIBINPUT_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/BitSet.h>
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#include <utils/KeyedVector.h>
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#include <utils/RefBase.h>
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#include <utils/String8.h>
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#include <utils/Timers.h>
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#include <utils/Vector.h>
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#include <stdint.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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/* Signifies that the key is being predispatched */
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AKEY_EVENT_FLAG_PREDISPATCH = 0x20000000,
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/* Private control to determine when an app is tracking a key sequence. */
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AKEY_EVENT_FLAG_START_TRACKING = 0x40000000,
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/* Key event is inconsistent with previously sent key events. */
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AKEY_EVENT_FLAG_TAINTED = 0x80000000,
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};
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enum {
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/**
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* This flag indicates that the window that received this motion event is partly
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* or wholly obscured by another visible window above it. This flag is set to true
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* even if the event did not directly pass through the obscured area.
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* A security sensitive application can check this flag to identify situations in which
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* a malicious application may have covered up part of its content for the purpose
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* of misleading the user or hijacking touches. An appropriate response might be
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* to drop the suspect touches or to take additional precautions to confirm the user's
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* actual intent.
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*/
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AMOTION_EVENT_FLAG_WINDOW_IS_PARTIALLY_OBSCURED = 0x2,
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/* Motion event is inconsistent with previously sent motion events. */
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AMOTION_EVENT_FLAG_TAINTED = 0x80000000,
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};
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enum {
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/* Used when a motion event is not associated with any display.
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* Typically used for non-pointer events. */
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ADISPLAY_ID_NONE = -1,
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/* The default display id. */
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ADISPLAY_ID_DEFAULT = 0,
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};
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enum {
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/*
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* Indicates that an input device has switches.
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* This input source flag is hidden from the API because switches are only used by the system
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* and applications have no way to interact with them.
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*/
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AINPUT_SOURCE_SWITCH = 0x80000000,
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};
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enum {
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/**
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* Constants for LEDs. Hidden from the API since we don't actually expose a way to interact
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* with LEDs to developers
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*
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* NOTE: If you add LEDs here, you must also add them to InputEventLabels.h
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*/
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ALED_NUM_LOCK = 0x00,
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ALED_CAPS_LOCK = 0x01,
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ALED_SCROLL_LOCK = 0x02,
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ALED_COMPOSE = 0x03,
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ALED_KANA = 0x04,
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ALED_SLEEP = 0x05,
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ALED_SUSPEND = 0x06,
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ALED_MUTE = 0x07,
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ALED_MISC = 0x08,
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ALED_MAIL = 0x09,
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ALED_CHARGING = 0x0a,
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ALED_CONTROLLER_1 = 0x10,
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ALED_CONTROLLER_2 = 0x11,
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ALED_CONTROLLER_3 = 0x12,
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ALED_CONTROLLER_4 = 0x13,
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};
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/* Maximum number of controller LEDs we support */
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#define MAX_CONTROLLER_LEDS 4
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/*
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* SystemUiVisibility constants from View.
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*/
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enum {
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ASYSTEM_UI_VISIBILITY_STATUS_BAR_VISIBLE = 0,
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ASYSTEM_UI_VISIBILITY_STATUS_BAR_HIDDEN = 0x00000001,
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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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* (We want at least 10 but some touch controllers obstensibly configured for 10 pointers
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* will occasionally emit 11. There is not much harm making this constant bigger.)
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*/
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#define MAX_POINTERS 16
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/*
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* Maximum number of samples supported per motion event.
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*/
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#define MAX_SAMPLES UINT16_MAX
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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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#ifdef HAVE_ANDROID_OS
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class Parcel;
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#endif
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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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* These flags are also defined in frameworks/base/core/java/android/view/WindowManagerPolicy.java.
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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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* NOTE: If you want a flag to be able to set in a keylayout file, then you must add it to
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* InputEventLabels.h as well. */
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// Indicates that the event should wake the device.
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POLICY_FLAG_WAKE = 0x00000001,
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// Indicates that the key is virtual, such as a capacitive button, and should
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// generate haptic feedback. Virtual keys may be suppressed for some time
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// after a recent touch to prevent accidental activation of virtual keys adjacent
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// to the touch screen during an edge swipe.
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POLICY_FLAG_VIRTUAL = 0x00000002,
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// Indicates that the key is the special function modifier.
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POLICY_FLAG_FUNCTION = 0x00000004,
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// Indicates that the key represents a special gesture that has been detected by
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// the touch firmware or driver. Causes touch events from the same device to be canceled.
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POLICY_FLAG_GESTURE = 0x00000008,
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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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// Indicates that the input event is from a trusted source such as a directly attached
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// input device or an application with system-wide event injection permission.
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POLICY_FLAG_TRUSTED = 0x02000000,
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// Indicates that the input event has passed through an input filter.
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POLICY_FLAG_FILTERED = 0x04000000,
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// Disables automatic key repeating behavior.
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POLICY_FLAG_DISABLE_KEY_REPEAT = 0x08000000,
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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 device was in an interactive state when the
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// event was intercepted.
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POLICY_FLAG_INTERACTIVE = 0x20000000,
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// Indicates that the event should be dispatched to applications.
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// The input event should still be sent to the InputDispatcher so that it can see all
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// input events received include those that it will not deliver.
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POLICY_FLAG_PASS_TO_USER = 0x40000000,
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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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enum { MAX_AXES = 30 }; // 30 so that sizeof(PointerCoords) == 128
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// Bitfield of axes that are present in this structure.
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uint64_t bits __attribute__((aligned(8)));
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// Values of axes that are stored in this structure packed in order by axis id
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// for each axis that is present in the structure according to 'bits'.
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float values[MAX_AXES];
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inline void clear() {
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BitSet64::clear(bits);
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}
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bool isEmpty() const {
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return BitSet64::isEmpty(bits);
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}
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float getAxisValue(int32_t axis) const;
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status_t setAxisValue(int32_t axis, float value);
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void scale(float scale);
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void applyOffset(float xOffset, float yOffset);
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inline float getX() const {
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return getAxisValue(AMOTION_EVENT_AXIS_X);
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}
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inline float getY() const {
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return getAxisValue(AMOTION_EVENT_AXIS_Y);
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}
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#ifdef HAVE_ANDROID_OS
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status_t readFromParcel(Parcel* parcel);
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status_t writeToParcel(Parcel* parcel) const;
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#endif
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bool operator==(const PointerCoords& other) const;
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inline bool operator!=(const PointerCoords& other) const {
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return !(*this == other);
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}
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void copyFrom(const PointerCoords& other);
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private:
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void tooManyAxes(int axis);
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};
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/*
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* Pointer property data.
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*/
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struct PointerProperties {
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// The id of the pointer.
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int32_t id;
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// The pointer tool type.
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int32_t toolType;
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inline void clear() {
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id = -1;
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toolType = 0;
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}
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bool operator==(const PointerProperties& other) const;
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inline bool operator!=(const PointerProperties& other) const {
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return !(*this == other);
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}
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void copyFrom(const PointerProperties& other);
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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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inline void setSource(int32_t source) { mSource = source; }
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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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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 void setFlags(int32_t flags) { mFlags = flags; }
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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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static const char* getLabel(int32_t keyCode);
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static int32_t getKeyCodeFromLabel(const char* label);
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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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protected:
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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 getActionMasked() const { return mAction & AMOTION_EVENT_ACTION_MASK; }
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inline int32_t getActionIndex() const {
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return (mAction & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
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>> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
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}
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inline void setAction(int32_t action) { mAction = action; }
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inline int32_t getFlags() const { return mFlags; }
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inline void setFlags(int32_t flags) { mFlags = flags; }
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inline int32_t getEdgeFlags() const { return mEdgeFlags; }
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inline void setEdgeFlags(int32_t edgeFlags) { mEdgeFlags = edgeFlags; }
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inline int32_t getMetaState() const { return mMetaState; }
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inline void setMetaState(int32_t metaState) { mMetaState = metaState; }
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inline int32_t getButtonState() const { return mButtonState; }
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inline int32_t setButtonState(int32_t buttonState) { mButtonState = buttonState; }
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inline int32_t getActionButton() const { return mActionButton; }
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inline void setActionButton(int32_t button) { mActionButton = button; }
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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 void setDownTime(nsecs_t downTime) { mDownTime = downTime; }
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inline size_t getPointerCount() const { return mPointerProperties.size(); }
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inline const PointerProperties* getPointerProperties(size_t pointerIndex) const {
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return &mPointerProperties[pointerIndex];
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}
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inline int32_t getPointerId(size_t pointerIndex) const {
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return mPointerProperties[pointerIndex].id;
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}
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inline int32_t getToolType(size_t pointerIndex) const {
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return mPointerProperties[pointerIndex].toolType;
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}
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inline nsecs_t getEventTime() const { return mSampleEventTimes[getHistorySize()]; }
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const PointerCoords* getRawPointerCoords(size_t pointerIndex) const;
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float getRawAxisValue(int32_t axis, size_t pointerIndex) const;
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inline float getRawX(size_t pointerIndex) const {
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return getRawAxisValue(AMOTION_EVENT_AXIS_X, pointerIndex);
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}
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inline float getRawY(size_t pointerIndex) const {
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return getRawAxisValue(AMOTION_EVENT_AXIS_Y, pointerIndex);
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}
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float getAxisValue(int32_t axis, size_t pointerIndex) const;
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inline float getX(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_X, pointerIndex);
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}
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inline float getY(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_Y, pointerIndex);
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}
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inline float getPressure(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_PRESSURE, pointerIndex);
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}
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inline float getSize(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_SIZE, pointerIndex);
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}
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inline float getTouchMajor(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR, pointerIndex);
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}
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inline float getTouchMinor(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR, pointerIndex);
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}
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inline float getToolMajor(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR, pointerIndex);
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}
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inline float getToolMinor(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR, pointerIndex);
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}
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inline float getOrientation(size_t pointerIndex) const {
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return getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION, pointerIndex);
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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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const PointerCoords* getHistoricalRawPointerCoords(
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size_t pointerIndex, size_t historicalIndex) const;
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float getHistoricalRawAxisValue(int32_t axis, size_t pointerIndex,
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size_t historicalIndex) const;
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inline float getHistoricalRawX(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalRawAxisValue(
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AMOTION_EVENT_AXIS_X, pointerIndex, historicalIndex);
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}
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inline float getHistoricalRawY(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalRawAxisValue(
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AMOTION_EVENT_AXIS_Y, pointerIndex, historicalIndex);
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}
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float getHistoricalAxisValue(int32_t axis, size_t pointerIndex, size_t historicalIndex) const;
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inline float getHistoricalX(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalAxisValue(
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AMOTION_EVENT_AXIS_X, pointerIndex, historicalIndex);
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}
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inline float getHistoricalY(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalAxisValue(
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AMOTION_EVENT_AXIS_Y, pointerIndex, historicalIndex);
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}
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inline float getHistoricalPressure(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalAxisValue(
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AMOTION_EVENT_AXIS_PRESSURE, pointerIndex, historicalIndex);
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}
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inline float getHistoricalSize(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalAxisValue(
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AMOTION_EVENT_AXIS_SIZE, pointerIndex, historicalIndex);
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}
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inline float getHistoricalTouchMajor(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalAxisValue(
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AMOTION_EVENT_AXIS_TOUCH_MAJOR, pointerIndex, historicalIndex);
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}
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inline float getHistoricalTouchMinor(size_t pointerIndex, size_t historicalIndex) const {
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return getHistoricalAxisValue(
|
|
AMOTION_EVENT_AXIS_TOUCH_MINOR, pointerIndex, historicalIndex);
|
|
}
|
|
|
|
inline float getHistoricalToolMajor(size_t pointerIndex, size_t historicalIndex) const {
|
|
return getHistoricalAxisValue(
|
|
AMOTION_EVENT_AXIS_TOOL_MAJOR, pointerIndex, historicalIndex);
|
|
}
|
|
|
|
inline float getHistoricalToolMinor(size_t pointerIndex, size_t historicalIndex) const {
|
|
return getHistoricalAxisValue(
|
|
AMOTION_EVENT_AXIS_TOOL_MINOR, pointerIndex, historicalIndex);
|
|
}
|
|
|
|
inline float getHistoricalOrientation(size_t pointerIndex, size_t historicalIndex) const {
|
|
return getHistoricalAxisValue(
|
|
AMOTION_EVENT_AXIS_ORIENTATION, pointerIndex, historicalIndex);
|
|
}
|
|
|
|
ssize_t findPointerIndex(int32_t pointerId) const;
|
|
|
|
void initialize(
|
|
int32_t deviceId,
|
|
int32_t source,
|
|
int32_t action,
|
|
int32_t actionButton,
|
|
int32_t flags,
|
|
int32_t edgeFlags,
|
|
int32_t metaState,
|
|
int32_t buttonState,
|
|
float xOffset,
|
|
float yOffset,
|
|
float xPrecision,
|
|
float yPrecision,
|
|
nsecs_t downTime,
|
|
nsecs_t eventTime,
|
|
size_t pointerCount,
|
|
const PointerProperties* pointerProperties,
|
|
const PointerCoords* pointerCoords);
|
|
|
|
void copyFrom(const MotionEvent* other, bool keepHistory);
|
|
|
|
void addSample(
|
|
nsecs_t eventTime,
|
|
const PointerCoords* pointerCoords);
|
|
|
|
void offsetLocation(float xOffset, float yOffset);
|
|
|
|
void scale(float scaleFactor);
|
|
|
|
// Apply 3x3 perspective matrix transformation.
|
|
// Matrix is in row-major form and compatible with SkMatrix.
|
|
void transform(const float matrix[9]);
|
|
|
|
#ifdef HAVE_ANDROID_OS
|
|
status_t readFromParcel(Parcel* parcel);
|
|
status_t writeToParcel(Parcel* parcel) const;
|
|
#endif
|
|
|
|
static bool isTouchEvent(int32_t source, int32_t action);
|
|
inline bool isTouchEvent() const {
|
|
return isTouchEvent(mSource, mAction);
|
|
}
|
|
|
|
// Low-level accessors.
|
|
inline const PointerProperties* getPointerProperties() const {
|
|
return mPointerProperties.array();
|
|
}
|
|
inline const nsecs_t* getSampleEventTimes() const { return mSampleEventTimes.array(); }
|
|
inline const PointerCoords* getSamplePointerCoords() const {
|
|
return mSamplePointerCoords.array();
|
|
}
|
|
|
|
static const char* getLabel(int32_t axis);
|
|
static int32_t getAxisFromLabel(const char* label);
|
|
|
|
protected:
|
|
int32_t mAction;
|
|
int32_t mActionButton;
|
|
int32_t mFlags;
|
|
int32_t mEdgeFlags;
|
|
int32_t mMetaState;
|
|
int32_t mButtonState;
|
|
float mXOffset;
|
|
float mYOffset;
|
|
float mXPrecision;
|
|
float mYPrecision;
|
|
nsecs_t mDownTime;
|
|
Vector<PointerProperties> mPointerProperties;
|
|
Vector<nsecs_t> mSampleEventTimes;
|
|
Vector<PointerCoords> mSamplePointerCoords;
|
|
};
|
|
|
|
/*
|
|
* Input event factory.
|
|
*/
|
|
class InputEventFactoryInterface {
|
|
protected:
|
|
virtual ~InputEventFactoryInterface() { }
|
|
|
|
public:
|
|
InputEventFactoryInterface() { }
|
|
|
|
virtual KeyEvent* createKeyEvent() = 0;
|
|
virtual MotionEvent* createMotionEvent() = 0;
|
|
};
|
|
|
|
/*
|
|
* A simple input event factory implementation that uses a single preallocated instance
|
|
* of each type of input event that are reused for each request.
|
|
*/
|
|
class PreallocatedInputEventFactory : public InputEventFactoryInterface {
|
|
public:
|
|
PreallocatedInputEventFactory() { }
|
|
virtual ~PreallocatedInputEventFactory() { }
|
|
|
|
virtual KeyEvent* createKeyEvent() { return & mKeyEvent; }
|
|
virtual MotionEvent* createMotionEvent() { return & mMotionEvent; }
|
|
|
|
private:
|
|
KeyEvent mKeyEvent;
|
|
MotionEvent mMotionEvent;
|
|
};
|
|
|
|
/*
|
|
* An input event factory implementation that maintains a pool of input events.
|
|
*/
|
|
class PooledInputEventFactory : public InputEventFactoryInterface {
|
|
public:
|
|
PooledInputEventFactory(size_t maxPoolSize = 20);
|
|
virtual ~PooledInputEventFactory();
|
|
|
|
virtual KeyEvent* createKeyEvent();
|
|
virtual MotionEvent* createMotionEvent();
|
|
|
|
void recycle(InputEvent* event);
|
|
|
|
private:
|
|
const size_t mMaxPoolSize;
|
|
|
|
Vector<KeyEvent*> mKeyEventPool;
|
|
Vector<MotionEvent*> mMotionEventPool;
|
|
};
|
|
|
|
} // namespace android
|
|
|
|
#endif // _LIBINPUT_INPUT_H
|
|
|