The Tor Browser: mobile/android/base/util/GamepadUtils.java@fc2d59ddac77 (annotated)

mobile/android/base/util/GamepadUtils.java@fc2d59ddac77 (annotated)

mobile/android/base/util/GamepadUtils.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 package org.mozilla.gecko.util;
 import android.os.Build;
 import android.view.InputDevice;
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.ListView;
 public final class GamepadUtils {
     private static final int SONY_XPERIA_GAMEPAD_DEVICE_ID = 196611;
     private static View.OnKeyListener sClickDispatcher;
     private static float sDeadZoneThresholdOverride = 1e-2f;
     private GamepadUtils() {
     }
     private static boolean isGamepadKey(KeyEvent event) {
         if (Build.VERSION.SDK_INT >= 9) {
             return (event.getSource() & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD;
         }
         return false;
     }
     public static boolean isActionKey(KeyEvent event) {
         return (isGamepadKey(event) && (event.getKeyCode() == KeyEvent.KEYCODE_BUTTON_A));
     }
     public static boolean isActionKeyDown(KeyEvent event) {
         return isActionKey(event) && event.getAction() == KeyEvent.ACTION_DOWN;
     }
     public static boolean isBackKey(KeyEvent event) {
         return (isGamepadKey(event) && (event.getKeyCode() == KeyEvent.KEYCODE_BUTTON_B));
     }
     public static void overrideDeadZoneThreshold(float threshold) {
         sDeadZoneThresholdOverride = threshold;
     }
     public static boolean isValueInDeadZone(MotionEvent event, int axis) {
         if (Build.VERSION.SDK_INT < 9) {
             return false;
         }
         float threshold;
         if (sDeadZoneThresholdOverride >= 0) {
             threshold = sDeadZoneThresholdOverride;
         } else {
             InputDevice.MotionRange range = event.getDevice().getMotionRange(axis);
             threshold = range.getFlat() + range.getFuzz();
         }
         float value = event.getAxisValue(axis);
         return (Math.abs(value) < threshold);
     }
     public static boolean isPanningControl(MotionEvent event) {
         if (Build.VERSION.SDK_INT < 12) {
             return false;
         }
         if ((event.getSource() & InputDevice.SOURCE_CLASS_MASK) != InputDevice.SOURCE_CLASS_JOYSTICK) {
             return false;
         }
         if (isValueInDeadZone(event, MotionEvent.AXIS_X)
                 && isValueInDeadZone(event, MotionEvent.AXIS_Y)
                 && isValueInDeadZone(event, MotionEvent.AXIS_Z)
                 && isValueInDeadZone(event, MotionEvent.AXIS_RZ)) {
             return false;
         }
         return true;
     }
     public static View.OnKeyListener getClickDispatcher() {
         if (sClickDispatcher == null) {
             sClickDispatcher = new View.OnKeyListener() {
                 @Override
                 public boolean onKey(View v, int keyCode, KeyEvent event) {
                     if (isActionKeyDown(event)) {
                         return v.performClick();
                     }
                     return false;
                 }
             };
         }
         return sClickDispatcher;
     }
     public static KeyEvent translateSonyXperiaGamepadKeys(int keyCode, KeyEvent event) {
         // The cross and circle button mappings may be swapped in the different regions so
         // determine if they are swapped so the proper key codes can be mapped to the keys
         boolean areKeysSwapped = areSonyXperiaGamepadKeysSwapped();
         // If a Sony Xperia, remap the cross and circle buttons to buttons
         // A and B for the gamepad API
         switch (keyCode) {
             case KeyEvent.KEYCODE_BACK:
                 keyCode = (areKeysSwapped ? KeyEvent.KEYCODE_BUTTON_A : KeyEvent.KEYCODE_BUTTON_B);
                 break;
             case KeyEvent.KEYCODE_DPAD_CENTER:
                 keyCode = (areKeysSwapped ? KeyEvent.KEYCODE_BUTTON_B : KeyEvent.KEYCODE_BUTTON_A);
                 break;
             default:
                 return event;
         }
         return new KeyEvent(event.getAction(), keyCode);
     }
     public static boolean isSonyXperiaGamepadKeyEvent(KeyEvent event) {
         return (event.getDeviceId() == SONY_XPERIA_GAMEPAD_DEVICE_ID &&
                 "Sony Ericsson".equals(Build.MANUFACTURER) &&
                 ("R800".equals(Build.MODEL) || "R800i".equals(Build.MODEL)));
     }
     private static boolean areSonyXperiaGamepadKeysSwapped() {
         // The cross and circle buttons on Sony Xperia phones are swapped
         // in different regions
         // http://developer.sonymobile.com/2011/02/13/xperia-play-game-keys/
         final char DEFAULT_O_BUTTON_LABEL = 0x25CB;
         boolean swapped = false;
         int[] deviceIds = InputDevice.getDeviceIds();
         for (int i= 0; deviceIds != null && i < deviceIds.length; i++) {
             KeyCharacterMap keyCharacterMap = KeyCharacterMap.load(deviceIds[i]);
             if (keyCharacterMap != null && DEFAULT_O_BUTTON_LABEL ==
                 keyCharacterMap.getDisplayLabel(KeyEvent.KEYCODE_DPAD_CENTER)) {
                 swapped = true;
                 break;
             }
         }
         return swapped;
     }
 }

The Tor Browser / annotate

mobile/android/base/util/GamepadUtils.java@fc2d59ddac77 (annotated)

mobile/android/base/util/GamepadUtils.java