1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/util/GamepadUtils.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,144 @@
1.4 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +package org.mozilla.gecko.util;
1.10 +
1.11 +import android.os.Build;
1.12 +import android.view.InputDevice;
1.13 +import android.view.KeyCharacterMap;
1.14 +import android.view.KeyEvent;
1.15 +import android.view.MotionEvent;
1.16 +import android.view.View;
1.17 +import android.widget.AdapterView;
1.18 +import android.widget.ListView;
1.19 +
1.20 +public final class GamepadUtils {
1.21 + private static final int SONY_XPERIA_GAMEPAD_DEVICE_ID = 196611;
1.22 +
1.23 + private static View.OnKeyListener sClickDispatcher;
1.24 + private static float sDeadZoneThresholdOverride = 1e-2f;
1.25 +
1.26 + private GamepadUtils() {
1.27 + }
1.28 +
1.29 + private static boolean isGamepadKey(KeyEvent event) {
1.30 + if (Build.VERSION.SDK_INT >= 9) {
1.31 + return (event.getSource() & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD;
1.32 + }
1.33 + return false;
1.34 + }
1.35 +
1.36 + public static boolean isActionKey(KeyEvent event) {
1.37 + return (isGamepadKey(event) && (event.getKeyCode() == KeyEvent.KEYCODE_BUTTON_A));
1.38 + }
1.39 +
1.40 + public static boolean isActionKeyDown(KeyEvent event) {
1.41 + return isActionKey(event) && event.getAction() == KeyEvent.ACTION_DOWN;
1.42 + }
1.43 +
1.44 + public static boolean isBackKey(KeyEvent event) {
1.45 + return (isGamepadKey(event) && (event.getKeyCode() == KeyEvent.KEYCODE_BUTTON_B));
1.46 + }
1.47 +
1.48 + public static void overrideDeadZoneThreshold(float threshold) {
1.49 + sDeadZoneThresholdOverride = threshold;
1.50 + }
1.51 +
1.52 + public static boolean isValueInDeadZone(MotionEvent event, int axis) {
1.53 + if (Build.VERSION.SDK_INT < 9) {
1.54 + return false;
1.55 + }
1.56 +
1.57 + float threshold;
1.58 + if (sDeadZoneThresholdOverride >= 0) {
1.59 + threshold = sDeadZoneThresholdOverride;
1.60 + } else {
1.61 + InputDevice.MotionRange range = event.getDevice().getMotionRange(axis);
1.62 + threshold = range.getFlat() + range.getFuzz();
1.63 + }
1.64 + float value = event.getAxisValue(axis);
1.65 + return (Math.abs(value) < threshold);
1.66 + }
1.67 +
1.68 + public static boolean isPanningControl(MotionEvent event) {
1.69 + if (Build.VERSION.SDK_INT < 12) {
1.70 + return false;
1.71 + }
1.72 + if ((event.getSource() & InputDevice.SOURCE_CLASS_MASK) != InputDevice.SOURCE_CLASS_JOYSTICK) {
1.73 + return false;
1.74 + }
1.75 + if (isValueInDeadZone(event, MotionEvent.AXIS_X)
1.76 + && isValueInDeadZone(event, MotionEvent.AXIS_Y)
1.77 + && isValueInDeadZone(event, MotionEvent.AXIS_Z)
1.78 + && isValueInDeadZone(event, MotionEvent.AXIS_RZ)) {
1.79 + return false;
1.80 + }
1.81 + return true;
1.82 + }
1.83 +
1.84 + public static View.OnKeyListener getClickDispatcher() {
1.85 + if (sClickDispatcher == null) {
1.86 + sClickDispatcher = new View.OnKeyListener() {
1.87 + @Override
1.88 + public boolean onKey(View v, int keyCode, KeyEvent event) {
1.89 + if (isActionKeyDown(event)) {
1.90 + return v.performClick();
1.91 + }
1.92 + return false;
1.93 + }
1.94 + };
1.95 + }
1.96 + return sClickDispatcher;
1.97 + }
1.98 +
1.99 + public static KeyEvent translateSonyXperiaGamepadKeys(int keyCode, KeyEvent event) {
1.100 + // The cross and circle button mappings may be swapped in the different regions so
1.101 + // determine if they are swapped so the proper key codes can be mapped to the keys
1.102 + boolean areKeysSwapped = areSonyXperiaGamepadKeysSwapped();
1.103 +
1.104 + // If a Sony Xperia, remap the cross and circle buttons to buttons
1.105 + // A and B for the gamepad API
1.106 + switch (keyCode) {
1.107 + case KeyEvent.KEYCODE_BACK:
1.108 + keyCode = (areKeysSwapped ? KeyEvent.KEYCODE_BUTTON_A : KeyEvent.KEYCODE_BUTTON_B);
1.109 + break;
1.110 +
1.111 + case KeyEvent.KEYCODE_DPAD_CENTER:
1.112 + keyCode = (areKeysSwapped ? KeyEvent.KEYCODE_BUTTON_B : KeyEvent.KEYCODE_BUTTON_A);
1.113 + break;
1.114 +
1.115 + default:
1.116 + return event;
1.117 + }
1.118 +
1.119 + return new KeyEvent(event.getAction(), keyCode);
1.120 + }
1.121 +
1.122 + public static boolean isSonyXperiaGamepadKeyEvent(KeyEvent event) {
1.123 + return (event.getDeviceId() == SONY_XPERIA_GAMEPAD_DEVICE_ID &&
1.124 + "Sony Ericsson".equals(Build.MANUFACTURER) &&
1.125 + ("R800".equals(Build.MODEL) || "R800i".equals(Build.MODEL)));
1.126 + }
1.127 +
1.128 + private static boolean areSonyXperiaGamepadKeysSwapped() {
1.129 + // The cross and circle buttons on Sony Xperia phones are swapped
1.130 + // in different regions
1.131 + // http://developer.sonymobile.com/2011/02/13/xperia-play-game-keys/
1.132 + final char DEFAULT_O_BUTTON_LABEL = 0x25CB;
1.133 +
1.134 + boolean swapped = false;
1.135 + int[] deviceIds = InputDevice.getDeviceIds();
1.136 +
1.137 + for (int i= 0; deviceIds != null && i < deviceIds.length; i++) {
1.138 + KeyCharacterMap keyCharacterMap = KeyCharacterMap.load(deviceIds[i]);
1.139 + if (keyCharacterMap != null && DEFAULT_O_BUTTON_LABEL ==
1.140 + keyCharacterMap.getDisplayLabel(KeyEvent.KEYCODE_DPAD_CENTER)) {
1.141 + swapped = true;
1.142 + break;
1.143 + }
1.144 + }
1.145 + return swapped;
1.146 + }
1.147 +}
