615 lines
18 KiB
C++
615 lines
18 KiB
C++
//
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// Copyright 2010 The Android Open Source Project
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//
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// Provides a pipe-based transport for native events in the NDK.
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//
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#define LOG_TAG "Input"
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//#define LOG_NDEBUG 0
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#define DEBUG_PROBE 0
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#include <stdlib.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <ui/Input.h>
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#include <math.h>
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#ifdef HAVE_ANDROID_OS
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#include <binder/Parcel.h>
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#include "SkPoint.h"
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#include "SkMatrix.h"
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#include "SkScalar.h"
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#endif
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namespace android {
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static const char* CONFIGURATION_FILE_DIR[] = {
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"idc/",
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"keylayout/",
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"keychars/",
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};
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static const char* CONFIGURATION_FILE_EXTENSION[] = {
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".idc",
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".kl",
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".kcm",
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};
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static bool isValidNameChar(char ch) {
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return isascii(ch) && (isdigit(ch) || isalpha(ch) || ch == '-' || ch == '_');
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}
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static void appendInputDeviceConfigurationFileRelativePath(String8& path,
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const String8& name, InputDeviceConfigurationFileType type) {
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path.append(CONFIGURATION_FILE_DIR[type]);
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for (size_t i = 0; i < name.length(); i++) {
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char ch = name[i];
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if (!isValidNameChar(ch)) {
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ch = '_';
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}
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path.append(&ch, 1);
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}
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path.append(CONFIGURATION_FILE_EXTENSION[type]);
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}
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String8 getInputDeviceConfigurationFilePathByDeviceIdentifier(
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const InputDeviceIdentifier& deviceIdentifier,
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InputDeviceConfigurationFileType type) {
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if (deviceIdentifier.vendor !=0 && deviceIdentifier.product != 0) {
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if (deviceIdentifier.version != 0) {
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// Try vendor product version.
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String8 versionPath(getInputDeviceConfigurationFilePathByName(
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String8::format("Vendor_%04x_Product_%04x_Version_%04x",
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deviceIdentifier.vendor, deviceIdentifier.product,
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deviceIdentifier.version),
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type));
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if (!versionPath.isEmpty()) {
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return versionPath;
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}
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}
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// Try vendor product.
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String8 productPath(getInputDeviceConfigurationFilePathByName(
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String8::format("Vendor_%04x_Product_%04x",
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deviceIdentifier.vendor, deviceIdentifier.product),
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type));
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if (!productPath.isEmpty()) {
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return productPath;
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}
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}
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// Try device name.
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return getInputDeviceConfigurationFilePathByName(deviceIdentifier.name, type);
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}
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String8 getInputDeviceConfigurationFilePathByName(
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const String8& name, InputDeviceConfigurationFileType type) {
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// Search system repository.
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String8 path;
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path.setTo(getenv("ANDROID_ROOT"));
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path.append("/usr/");
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appendInputDeviceConfigurationFileRelativePath(path, name, type);
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#if DEBUG_PROBE
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LOGD("Probing for system provided input device configuration file: path='%s'", path.string());
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#endif
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if (!access(path.string(), R_OK)) {
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#if DEBUG_PROBE
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LOGD("Found");
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#endif
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return path;
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}
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// Search user repository.
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// TODO Should only look here if not in safe mode.
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path.setTo(getenv("ANDROID_DATA"));
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path.append("/system/devices/");
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appendInputDeviceConfigurationFileRelativePath(path, name, type);
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#if DEBUG_PROBE
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LOGD("Probing for system user input device configuration file: path='%s'", path.string());
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#endif
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if (!access(path.string(), R_OK)) {
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#if DEBUG_PROBE
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LOGD("Found");
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#endif
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return path;
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}
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// Not found.
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#if DEBUG_PROBE
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LOGD("Probe failed to find input device configuration file: name='%s', type=%d",
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name.string(), type);
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#endif
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return String8();
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}
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// --- InputEvent ---
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void InputEvent::initialize(int32_t deviceId, int32_t source) {
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mDeviceId = deviceId;
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mSource = source;
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}
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void InputEvent::initialize(const InputEvent& from) {
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mDeviceId = from.mDeviceId;
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mSource = from.mSource;
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}
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// --- KeyEvent ---
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bool KeyEvent::hasDefaultAction(int32_t keyCode) {
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switch (keyCode) {
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case AKEYCODE_HOME:
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case AKEYCODE_BACK:
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case AKEYCODE_CALL:
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case AKEYCODE_ENDCALL:
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case AKEYCODE_VOLUME_UP:
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case AKEYCODE_VOLUME_DOWN:
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case AKEYCODE_VOLUME_MUTE:
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case AKEYCODE_POWER:
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case AKEYCODE_CAMERA:
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case AKEYCODE_HEADSETHOOK:
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case AKEYCODE_MENU:
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case AKEYCODE_NOTIFICATION:
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case AKEYCODE_FOCUS:
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case AKEYCODE_SEARCH:
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case AKEYCODE_MEDIA_PLAY:
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case AKEYCODE_MEDIA_PAUSE:
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case AKEYCODE_MEDIA_PLAY_PAUSE:
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case AKEYCODE_MEDIA_STOP:
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case AKEYCODE_MEDIA_NEXT:
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case AKEYCODE_MEDIA_PREVIOUS:
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case AKEYCODE_MEDIA_REWIND:
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case AKEYCODE_MEDIA_RECORD:
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case AKEYCODE_MEDIA_FAST_FORWARD:
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case AKEYCODE_MUTE:
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return true;
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}
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return false;
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}
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bool KeyEvent::hasDefaultAction() const {
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return hasDefaultAction(getKeyCode());
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}
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bool KeyEvent::isSystemKey(int32_t keyCode) {
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switch (keyCode) {
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case AKEYCODE_MENU:
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case AKEYCODE_SOFT_RIGHT:
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case AKEYCODE_HOME:
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case AKEYCODE_BACK:
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case AKEYCODE_CALL:
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case AKEYCODE_ENDCALL:
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case AKEYCODE_VOLUME_UP:
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case AKEYCODE_VOLUME_DOWN:
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case AKEYCODE_VOLUME_MUTE:
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case AKEYCODE_MUTE:
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case AKEYCODE_POWER:
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case AKEYCODE_HEADSETHOOK:
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case AKEYCODE_MEDIA_PLAY:
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case AKEYCODE_MEDIA_PAUSE:
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case AKEYCODE_MEDIA_PLAY_PAUSE:
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case AKEYCODE_MEDIA_STOP:
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case AKEYCODE_MEDIA_NEXT:
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case AKEYCODE_MEDIA_PREVIOUS:
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case AKEYCODE_MEDIA_REWIND:
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case AKEYCODE_MEDIA_RECORD:
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case AKEYCODE_MEDIA_FAST_FORWARD:
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case AKEYCODE_CAMERA:
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case AKEYCODE_FOCUS:
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case AKEYCODE_SEARCH:
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return true;
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}
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return false;
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}
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bool KeyEvent::isSystemKey() const {
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return isSystemKey(getKeyCode());
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}
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void KeyEvent::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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InputEvent::initialize(deviceId, source);
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mAction = action;
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mFlags = flags;
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mKeyCode = keyCode;
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mScanCode = scanCode;
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mMetaState = metaState;
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mRepeatCount = repeatCount;
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mDownTime = downTime;
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mEventTime = eventTime;
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}
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void KeyEvent::initialize(const KeyEvent& from) {
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InputEvent::initialize(from);
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mAction = from.mAction;
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mFlags = from.mFlags;
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mKeyCode = from.mKeyCode;
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mScanCode = from.mScanCode;
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mMetaState = from.mMetaState;
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mRepeatCount = from.mRepeatCount;
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mDownTime = from.mDownTime;
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mEventTime = from.mEventTime;
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}
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// --- PointerCoords ---
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#ifdef HAVE_ANDROID_OS
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status_t PointerCoords::readFromParcel(Parcel* parcel) {
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bits = parcel->readInt32();
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uint32_t count = __builtin_popcount(bits);
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if (count > MAX_AXES) {
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return BAD_VALUE;
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}
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for (uint32_t i = 0; i < count; i++) {
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values[i] = parcel->readInt32();
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}
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return OK;
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}
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status_t PointerCoords::writeToParcel(Parcel* parcel) const {
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parcel->writeInt32(bits);
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uint32_t count = __builtin_popcount(bits);
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for (uint32_t i = 0; i < count; i++) {
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parcel->writeInt32(values[i]);
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}
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return OK;
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}
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#endif
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void PointerCoords::tooManyAxes(int axis) {
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LOGW("Could not set value for axis %d because the PointerCoords structure is full and "
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"cannot contain more than %d axis values.", axis, int(MAX_AXES));
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}
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// --- MotionEvent ---
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void MotionEvent::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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InputEvent::initialize(deviceId, source);
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mAction = action;
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mFlags = flags;
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mEdgeFlags = edgeFlags;
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mMetaState = metaState;
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mXOffset = xOffset;
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mYOffset = yOffset;
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mXPrecision = xPrecision;
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mYPrecision = yPrecision;
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mDownTime = downTime;
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mPointerIds.clear();
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mPointerIds.appendArray(pointerIds, pointerCount);
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mSampleEventTimes.clear();
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mSamplePointerCoords.clear();
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addSample(eventTime, pointerCoords);
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}
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void MotionEvent::copyFrom(const MotionEvent* other, bool keepHistory) {
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InputEvent::initialize(other->mDeviceId, other->mSource);
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mAction = other->mAction;
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mFlags = other->mFlags;
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mEdgeFlags = other->mEdgeFlags;
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mMetaState = other->mMetaState;
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mXOffset = other->mXOffset;
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mYOffset = other->mYOffset;
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mXPrecision = other->mXPrecision;
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mYPrecision = other->mYPrecision;
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mDownTime = other->mDownTime;
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mPointerIds = other->mPointerIds;
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if (keepHistory) {
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mSampleEventTimes = other->mSampleEventTimes;
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mSamplePointerCoords = other->mSamplePointerCoords;
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} else {
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mSampleEventTimes.clear();
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mSampleEventTimes.push(other->getEventTime());
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mSamplePointerCoords.clear();
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size_t pointerCount = other->getPointerCount();
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size_t historySize = other->getHistorySize();
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mSamplePointerCoords.appendArray(other->mSamplePointerCoords.array()
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+ (historySize * pointerCount), pointerCount);
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}
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}
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void MotionEvent::addSample(
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int64_t eventTime,
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const PointerCoords* pointerCoords) {
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mSampleEventTimes.push(eventTime);
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mSamplePointerCoords.appendArray(pointerCoords, getPointerCount());
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}
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const PointerCoords* MotionEvent::getRawPointerCoords(size_t pointerIndex) const {
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return &mSamplePointerCoords[getHistorySize() * getPointerCount() + pointerIndex];
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}
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float MotionEvent::getRawAxisValue(int32_t axis, size_t pointerIndex) const {
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return getRawPointerCoords(pointerIndex)->getAxisValue(axis);
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}
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float MotionEvent::getAxisValue(int32_t axis, size_t pointerIndex) const {
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float value = getRawPointerCoords(pointerIndex)->getAxisValue(axis);
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switch (axis) {
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case AMOTION_EVENT_AXIS_X:
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value += mXOffset;
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break;
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case AMOTION_EVENT_AXIS_Y:
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value += mYOffset;
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break;
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}
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return value;
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}
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const PointerCoords* MotionEvent::getHistoricalRawPointerCoords(
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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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float MotionEvent::getHistoricalRawAxisValue(int32_t axis, size_t pointerIndex,
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size_t historicalIndex) const {
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return getHistoricalRawPointerCoords(pointerIndex, historicalIndex)->getAxisValue(axis);
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}
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float MotionEvent::getHistoricalAxisValue(int32_t axis, size_t pointerIndex,
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size_t historicalIndex) const {
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float value = getHistoricalRawPointerCoords(pointerIndex, historicalIndex)->getAxisValue(axis);
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switch (axis) {
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case AMOTION_EVENT_AXIS_X:
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value += mXOffset;
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break;
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case AMOTION_EVENT_AXIS_Y:
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value += mYOffset;
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break;
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}
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return value;
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}
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void MotionEvent::offsetLocation(float xOffset, float yOffset) {
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mXOffset += xOffset;
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mYOffset += yOffset;
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}
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static inline void scaleAxisValue(PointerCoords& c, int axis, float scaleFactor) {
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float* value = c.editAxisValue(axis);
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if (value) {
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*value *= scaleFactor;
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}
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}
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void MotionEvent::scale(float scaleFactor) {
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mXOffset *= scaleFactor;
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mYOffset *= scaleFactor;
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mXPrecision *= scaleFactor;
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mYPrecision *= scaleFactor;
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size_t numSamples = mSamplePointerCoords.size();
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for (size_t i = 0; i < numSamples; i++) {
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PointerCoords& c = mSamplePointerCoords.editItemAt(i);
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// No need to scale pressure or size since they are normalized.
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// No need to scale orientation since it is meaningless to do so.
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scaleAxisValue(c, AMOTION_EVENT_AXIS_X, scaleFactor);
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scaleAxisValue(c, AMOTION_EVENT_AXIS_Y, scaleFactor);
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scaleAxisValue(c, AMOTION_EVENT_AXIS_TOUCH_MAJOR, scaleFactor);
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scaleAxisValue(c, AMOTION_EVENT_AXIS_TOUCH_MINOR, scaleFactor);
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scaleAxisValue(c, AMOTION_EVENT_AXIS_TOOL_MAJOR, scaleFactor);
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scaleAxisValue(c, AMOTION_EVENT_AXIS_TOOL_MINOR, scaleFactor);
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}
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}
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#ifdef HAVE_ANDROID_OS
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static inline float transformAngle(const SkMatrix* matrix, float angleRadians) {
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// Construct and transform a vector oriented at the specified clockwise angle from vertical.
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// Coordinate system: down is increasing Y, right is increasing X.
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SkPoint vector;
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vector.fX = SkFloatToScalar(sinf(angleRadians));
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vector.fY = SkFloatToScalar(-cosf(angleRadians));
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matrix->mapVectors(& vector, 1);
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// Derive the transformed vector's clockwise angle from vertical.
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float result = atan2f(SkScalarToFloat(vector.fX), SkScalarToFloat(-vector.fY));
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if (result < - M_PI_2) {
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result += M_PI;
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} else if (result > M_PI_2) {
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result -= M_PI;
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}
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return result;
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}
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void MotionEvent::transform(const SkMatrix* matrix) {
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float oldXOffset = mXOffset;
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float oldYOffset = mYOffset;
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// The tricky part of this implementation is to preserve the value of
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// rawX and rawY. So we apply the transformation to the first point
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// then derive an appropriate new X/Y offset that will preserve rawX and rawY.
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SkPoint point;
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float rawX = getRawX(0);
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float rawY = getRawY(0);
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matrix->mapXY(SkFloatToScalar(rawX + oldXOffset), SkFloatToScalar(rawY + oldYOffset),
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& point);
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float newX = SkScalarToFloat(point.fX);
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float newY = SkScalarToFloat(point.fY);
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float newXOffset = newX - rawX;
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float newYOffset = newY - rawY;
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mXOffset = newXOffset;
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mYOffset = newYOffset;
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// Apply the transformation to all samples.
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size_t numSamples = mSamplePointerCoords.size();
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for (size_t i = 0; i < numSamples; i++) {
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PointerCoords& c = mSamplePointerCoords.editItemAt(i);
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float* xPtr = c.editAxisValue(AMOTION_EVENT_AXIS_X);
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float* yPtr = c.editAxisValue(AMOTION_EVENT_AXIS_Y);
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if (xPtr && yPtr) {
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float x = *xPtr + oldXOffset;
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float y = *yPtr + oldYOffset;
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matrix->mapXY(SkFloatToScalar(x), SkFloatToScalar(y), & point);
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*xPtr = SkScalarToFloat(point.fX) - newXOffset;
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*yPtr = SkScalarToFloat(point.fY) - newYOffset;
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}
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float* orientationPtr = c.editAxisValue(AMOTION_EVENT_AXIS_ORIENTATION);
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if (orientationPtr) {
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*orientationPtr = transformAngle(matrix, *orientationPtr);
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}
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}
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}
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status_t MotionEvent::readFromParcel(Parcel* parcel) {
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size_t pointerCount = parcel->readInt32();
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size_t sampleCount = parcel->readInt32();
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if (pointerCount == 0 || pointerCount > MAX_POINTERS || sampleCount == 0) {
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return BAD_VALUE;
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}
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mDeviceId = parcel->readInt32();
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mSource = parcel->readInt32();
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mAction = parcel->readInt32();
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mFlags = parcel->readInt32();
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mEdgeFlags = parcel->readInt32();
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mMetaState = parcel->readInt32();
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mXOffset = parcel->readFloat();
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mYOffset = parcel->readFloat();
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mXPrecision = parcel->readFloat();
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mYPrecision = parcel->readFloat();
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mDownTime = parcel->readInt64();
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mPointerIds.clear();
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mPointerIds.setCapacity(pointerCount);
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mSampleEventTimes.clear();
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mSampleEventTimes.setCapacity(sampleCount);
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mSamplePointerCoords.clear();
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mSamplePointerCoords.setCapacity(sampleCount * pointerCount);
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for (size_t i = 0; i < pointerCount; i++) {
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mPointerIds.push(parcel->readInt32());
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}
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while (sampleCount-- > 0) {
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mSampleEventTimes.push(parcel->readInt64());
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
mSamplePointerCoords.push();
|
|
status_t status = mSamplePointerCoords.editTop().readFromParcel(parcel);
|
|
if (status) {
|
|
return status;
|
|
}
|
|
}
|
|
}
|
|
return OK;
|
|
}
|
|
|
|
status_t MotionEvent::writeToParcel(Parcel* parcel) const {
|
|
size_t pointerCount = mPointerIds.size();
|
|
size_t sampleCount = mSampleEventTimes.size();
|
|
|
|
parcel->writeInt32(pointerCount);
|
|
parcel->writeInt32(sampleCount);
|
|
|
|
parcel->writeInt32(mDeviceId);
|
|
parcel->writeInt32(mSource);
|
|
parcel->writeInt32(mAction);
|
|
parcel->writeInt32(mFlags);
|
|
parcel->writeInt32(mEdgeFlags);
|
|
parcel->writeInt32(mMetaState);
|
|
parcel->writeFloat(mXOffset);
|
|
parcel->writeFloat(mYOffset);
|
|
parcel->writeFloat(mXPrecision);
|
|
parcel->writeFloat(mYPrecision);
|
|
parcel->writeInt64(mDownTime);
|
|
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
parcel->writeInt32(mPointerIds.itemAt(i));
|
|
}
|
|
|
|
const PointerCoords* pc = mSamplePointerCoords.array();
|
|
for (size_t h = 0; h < sampleCount; h++) {
|
|
parcel->writeInt64(mSampleEventTimes.itemAt(h));
|
|
for (size_t i = 0; i < pointerCount; i++) {
|
|
status_t status = (pc++)->writeToParcel(parcel);
|
|
if (status) {
|
|
return status;
|
|
}
|
|
}
|
|
}
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
|
|
// --- InputDeviceInfo ---
|
|
|
|
InputDeviceInfo::InputDeviceInfo() {
|
|
initialize(-1, String8("uninitialized device info"));
|
|
}
|
|
|
|
InputDeviceInfo::InputDeviceInfo(const InputDeviceInfo& other) :
|
|
mId(other.mId), mName(other.mName), mSources(other.mSources),
|
|
mKeyboardType(other.mKeyboardType),
|
|
mMotionRanges(other.mMotionRanges) {
|
|
}
|
|
|
|
InputDeviceInfo::~InputDeviceInfo() {
|
|
}
|
|
|
|
void InputDeviceInfo::initialize(int32_t id, const String8& name) {
|
|
mId = id;
|
|
mName = name;
|
|
mSources = 0;
|
|
mKeyboardType = AINPUT_KEYBOARD_TYPE_NONE;
|
|
mMotionRanges.clear();
|
|
}
|
|
|
|
const InputDeviceInfo::MotionRange* InputDeviceInfo::getMotionRange(int32_t axis) const {
|
|
ssize_t index = mMotionRanges.indexOfKey(axis);
|
|
return index >= 0 ? & mMotionRanges.valueAt(index) : NULL;
|
|
}
|
|
|
|
void InputDeviceInfo::addSource(uint32_t source) {
|
|
mSources |= source;
|
|
}
|
|
|
|
void InputDeviceInfo::addMotionRange(int32_t axis, float min, float max,
|
|
float flat, float fuzz) {
|
|
MotionRange range = { min, max, flat, fuzz };
|
|
addMotionRange(axis, range);
|
|
}
|
|
|
|
void InputDeviceInfo::addMotionRange(int32_t axis, const MotionRange& range) {
|
|
mMotionRanges.add(axis, range);
|
|
}
|
|
|
|
} // namespace android
|