Migrating majority of gamepad from content/browser/ to device/

content/public/android/java/src/org/chromium/content/browser/input/GamepadMappings.java

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.content.browser.input;
-
-import android.view.KeyEvent;
-import android.view.MotionEvent;
-
-import org.chromium.base.VisibleForTesting;
-import org.chromium.base.annotations.JNINamespace;
-
-/**
- * Class to manage mapping information related to each supported gamepad controller device.
- */
-@JNINamespace("content")
-class GamepadMappings {
-    @VisibleForTesting
-    static final String NVIDIA_SHIELD_DEVICE_NAME_PREFIX = "NVIDIA Corporation NVIDIA Controller";
-    @VisibleForTesting
-    static final String MICROSOFT_XBOX_PAD_DEVICE_NAME = "Microsoft X-Box 360 pad";
-    @VisibleForTesting
-    static final String PS3_SIXAXIS_DEVICE_NAME = "Sony PLAYSTATION(R)3 Controller";
-    @VisibleForTesting
-    static final String SAMSUNG_EI_GP20_DEVICE_NAME = "Samsung Game Pad EI-GP20";
-    @VisibleForTesting
-    static final String AMAZON_FIRE_DEVICE_NAME = "Amazon Fire Game Controller";
-
-    public static boolean mapToStandardGamepad(float[] mappedAxes, float[] mappedButtons,
-            float[] rawAxes, float[] rawButtons, String deviceName) {
-        if (deviceName.startsWith(NVIDIA_SHIELD_DEVICE_NAME_PREFIX)) {
-            mapShieldGamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-            return true;
-        } else if (deviceName.equals(MICROSOFT_XBOX_PAD_DEVICE_NAME)) {
-            mapXBox360Gamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-            return true;
-        } else if (deviceName.equals(PS3_SIXAXIS_DEVICE_NAME)) {
-            mapPS3SixAxisGamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-            return true;
-        } else if (deviceName.equals(SAMSUNG_EI_GP20_DEVICE_NAME)) {
-            mapSamsungEIGP20Gamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-            return true;
-        } else if (deviceName.equals(AMAZON_FIRE_DEVICE_NAME)) {
-            mapAmazonFireGamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-            return true;
-        }
-
-        mapUnknownGamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-        return false;
-    }
-
-    private static void mapCommonXYABButtons(float[] mappedButtons, float[] rawButtons) {
-        float a = rawButtons[KeyEvent.KEYCODE_BUTTON_A];
-        float b = rawButtons[KeyEvent.KEYCODE_BUTTON_B];
-        float x = rawButtons[KeyEvent.KEYCODE_BUTTON_X];
-        float y = rawButtons[KeyEvent.KEYCODE_BUTTON_Y];
-        mappedButtons[CanonicalButtonIndex.PRIMARY] = a;
-        mappedButtons[CanonicalButtonIndex.SECONDARY] = b;
-        mappedButtons[CanonicalButtonIndex.TERTIARY] = x;
-        mappedButtons[CanonicalButtonIndex.QUATERNARY] = y;
-    }
-
-    private static void mapCommonStartSelectMetaButtons(
-            float[] mappedButtons, float[] rawButtons) {
-        float start = rawButtons[KeyEvent.KEYCODE_BUTTON_START];
-        float select = rawButtons[KeyEvent.KEYCODE_BUTTON_SELECT];
-        float mode = rawButtons[KeyEvent.KEYCODE_BUTTON_MODE];
-        mappedButtons[CanonicalButtonIndex.START] = start;
-        mappedButtons[CanonicalButtonIndex.BACK_SELECT] = select;
-        mappedButtons[CanonicalButtonIndex.META] = mode;
-    }
-
-    private static void mapCommonThumbstickButtons(float[] mappedButtons, float[] rawButtons) {
-        float thumbL = rawButtons[KeyEvent.KEYCODE_BUTTON_THUMBL];
-        float thumbR = rawButtons[KeyEvent.KEYCODE_BUTTON_THUMBR];
-        mappedButtons[CanonicalButtonIndex.LEFT_THUMBSTICK] = thumbL;
-        mappedButtons[CanonicalButtonIndex.RIGHT_THUMBSTICK] = thumbR;
-    }
-
-    private static void mapCommonTriggerButtons(float[] mappedButtons, float[] rawButtons) {
-        float l1 = rawButtons[KeyEvent.KEYCODE_BUTTON_L1];
-        float r1 = rawButtons[KeyEvent.KEYCODE_BUTTON_R1];
-        mappedButtons[CanonicalButtonIndex.LEFT_TRIGGER] = l1;
-        mappedButtons[CanonicalButtonIndex.RIGHT_TRIGGER] = r1;
-    }
-
-    private static void mapTriggerButtonsToTopShoulder(float[] mappedButtons, float[] rawButtons) {
-        float l1 = rawButtons[KeyEvent.KEYCODE_BUTTON_L1];
-        float r1 = rawButtons[KeyEvent.KEYCODE_BUTTON_R1];
-        mappedButtons[CanonicalButtonIndex.LEFT_SHOULDER] = l1;
-        mappedButtons[CanonicalButtonIndex.RIGHT_SHOULDER] = r1;
-    }
-
-    private static void mapCommonDpadButtons(float[] mappedButtons, float[] rawButtons) {
-        float dpadDown = rawButtons[KeyEvent.KEYCODE_DPAD_DOWN];
-        float dpadUp = rawButtons[KeyEvent.KEYCODE_DPAD_UP];
-        float dpadLeft = rawButtons[KeyEvent.KEYCODE_DPAD_LEFT];
-        float dpadRight = rawButtons[KeyEvent.KEYCODE_DPAD_RIGHT];
-        mappedButtons[CanonicalButtonIndex.DPAD_DOWN] = dpadDown;
-        mappedButtons[CanonicalButtonIndex.DPAD_UP] = dpadUp;
-        mappedButtons[CanonicalButtonIndex.DPAD_LEFT] = dpadLeft;
-        mappedButtons[CanonicalButtonIndex.DPAD_RIGHT] = dpadRight;
-    }
-
-    private static void mapXYAxes(float[] mappedAxes, float[] rawAxes) {
-        mappedAxes[CanonicalAxisIndex.LEFT_STICK_X] = rawAxes[MotionEvent.AXIS_X];
-        mappedAxes[CanonicalAxisIndex.LEFT_STICK_Y] = rawAxes[MotionEvent.AXIS_Y];
-    }
-
-    private static void mapRXAndRYAxesToRightStick(float[] mappedAxes, float[] rawAxes) {
-        mappedAxes[CanonicalAxisIndex.RIGHT_STICK_X] = rawAxes[MotionEvent.AXIS_RX];
-        mappedAxes[CanonicalAxisIndex.RIGHT_STICK_Y] = rawAxes[MotionEvent.AXIS_RY];
-    }
-
-    private static void mapZAndRZAxesToRightStick(float[] mappedAxes, float[] rawAxes) {
-        mappedAxes[CanonicalAxisIndex.RIGHT_STICK_X] = rawAxes[MotionEvent.AXIS_Z];
-        mappedAxes[CanonicalAxisIndex.RIGHT_STICK_Y] = rawAxes[MotionEvent.AXIS_RZ];
-    }
-
-    private static void mapTriggerAxexToShoulderButtons(float[] mappedButtons, float[] rawAxes) {
-        float lTrigger = rawAxes[MotionEvent.AXIS_LTRIGGER];
-        float rTrigger = rawAxes[MotionEvent.AXIS_RTRIGGER];
-        mappedButtons[CanonicalButtonIndex.LEFT_SHOULDER] = lTrigger;
-        mappedButtons[CanonicalButtonIndex.RIGHT_SHOULDER] = rTrigger;
-    }
-
-    private static void mapPedalAxesToBottomShoulder(float[] mappedButtons, float[] rawAxes) {
-        float lTrigger = rawAxes[MotionEvent.AXIS_BRAKE];
-        float rTrigger = rawAxes[MotionEvent.AXIS_GAS];
-        mappedButtons[CanonicalButtonIndex.LEFT_TRIGGER] = lTrigger;
-        mappedButtons[CanonicalButtonIndex.RIGHT_TRIGGER] = rTrigger;
-    }
-
-    private static void mapTriggerAxesToBottomShoulder(float[] mappedButtons, float[] rawAxes) {
-        float lTrigger = rawAxes[MotionEvent.AXIS_LTRIGGER];
-        float rTrigger = rawAxes[MotionEvent.AXIS_RTRIGGER];
-        mappedButtons[CanonicalButtonIndex.LEFT_TRIGGER] = lTrigger;
-        mappedButtons[CanonicalButtonIndex.RIGHT_TRIGGER] = rTrigger;
-    }
-
-    @VisibleForTesting
-    static float negativeAxisValueAsButton(float input) {
-        return (input < -0.5f) ? 1.f : 0.f;
-    }
-
-    @VisibleForTesting
-    static float positiveAxisValueAsButton(float input) {
-        return (input > 0.5f) ? 1.f : 0.f;
-    }
-
-    private static void mapHatAxisToDpadButtons(float[] mappedButtons, float[] rawAxes) {
-        float hatX = rawAxes[MotionEvent.AXIS_HAT_X];
-        float hatY = rawAxes[MotionEvent.AXIS_HAT_Y];
-        mappedButtons[CanonicalButtonIndex.DPAD_LEFT] = negativeAxisValueAsButton(hatX);
-        mappedButtons[CanonicalButtonIndex.DPAD_RIGHT] = positiveAxisValueAsButton(hatX);
-        mappedButtons[CanonicalButtonIndex.DPAD_UP] = negativeAxisValueAsButton(hatY);
-        mappedButtons[CanonicalButtonIndex.DPAD_DOWN] = positiveAxisValueAsButton(hatY);
-    }
-
-    /**
-     * Method for mapping Amazon Fire gamepad axis and button values
-     * to standard gamepad button and axes values.
-     */
-    private static void mapAmazonFireGamepad(
-            float[] mappedButtons, float[] rawButtons, float[] mappedAxes, float[] rawAxes) {
-        mapCommonXYABButtons(mappedButtons, rawButtons);
-        mapTriggerButtonsToTopShoulder(mappedButtons, rawButtons);
-        mapCommonThumbstickButtons(mappedButtons, rawButtons);
-        mapCommonStartSelectMetaButtons(mappedButtons, rawButtons);
-        mapPedalAxesToBottomShoulder(mappedButtons, rawAxes);
-        mapHatAxisToDpadButtons(mappedButtons, rawAxes);
-
-        mapXYAxes(mappedAxes, rawAxes);
-        mapZAndRZAxesToRightStick(mappedAxes, rawAxes);
-    }
-
-    /**
-     * Method for mapping Nvidia gamepad axis and button values
-     * to standard gamepad button and axes values.
-     */
-    private static void mapShieldGamepad(float[] mappedButtons, float[] rawButtons,
-            float[] mappedAxes, float[] rawAxes) {
-        mapCommonXYABButtons(mappedButtons, rawButtons);
-        mapTriggerButtonsToTopShoulder(mappedButtons, rawButtons);
-        mapCommonThumbstickButtons(mappedButtons, rawButtons);
-        mapCommonStartSelectMetaButtons(mappedButtons, rawButtons);
-        mapTriggerAxesToBottomShoulder(mappedButtons, rawAxes);
-        mapHatAxisToDpadButtons(mappedButtons, rawAxes);
-
-        mapXYAxes(mappedAxes, rawAxes);
-        mapZAndRZAxesToRightStick(mappedAxes, rawAxes);
-    }
-
-    /**
-     * Method for mapping Microsoft XBox 360 gamepad axis and button values
-     * to standard gamepad button and axes values.
-     */
-    private static void mapXBox360Gamepad(float[] mappedButtons, float[] rawButtons,
-            float[] mappedAxes, float[] rawAxes) {
-        // These are actually mapped the same way in Android.
-        mapShieldGamepad(mappedButtons, rawButtons, mappedAxes, rawAxes);
-    }
-
-    private static void mapPS3SixAxisGamepad(float[] mappedButtons, float[] rawButtons,
-            float[] mappedAxes, float[] rawAxes) {
-        // On PS3 X/Y has higher priority.
-        float a = rawButtons[KeyEvent.KEYCODE_BUTTON_A];
-        float b = rawButtons[KeyEvent.KEYCODE_BUTTON_B];
-        float x = rawButtons[KeyEvent.KEYCODE_BUTTON_X];
-        float y = rawButtons[KeyEvent.KEYCODE_BUTTON_Y];
-        mappedButtons[CanonicalButtonIndex.PRIMARY] = x;
-        mappedButtons[CanonicalButtonIndex.SECONDARY] = y;
-        mappedButtons[CanonicalButtonIndex.TERTIARY] = a;
-        mappedButtons[CanonicalButtonIndex.QUATERNARY] = b;
-
-        mapCommonTriggerButtons(mappedButtons, rawButtons);
-        mapCommonThumbstickButtons(mappedButtons, rawButtons);
-        mapCommonDpadButtons(mappedButtons, rawButtons);
-        mapCommonStartSelectMetaButtons(mappedButtons, rawButtons);
-        mapTriggerAxexToShoulderButtons(mappedButtons, rawAxes);
-
-        mapXYAxes(mappedAxes, rawAxes);
-        mapZAndRZAxesToRightStick(mappedAxes, rawAxes);
-    }
-
-    private static void mapSamsungEIGP20Gamepad(float[] mappedButtons, float[] rawButtons,
-            float[] mappedAxes, float[] rawAxes) {
-        mapCommonXYABButtons(mappedButtons, rawButtons);
-        mapCommonTriggerButtons(mappedButtons, rawButtons);
-        mapCommonThumbstickButtons(mappedButtons, rawButtons);
-        mapCommonStartSelectMetaButtons(mappedButtons, rawButtons);
-        mapHatAxisToDpadButtons(mappedButtons, rawAxes);
-
-        mapXYAxes(mappedAxes, rawAxes);
-        mapRXAndRYAxesToRightStick(mappedAxes, rawAxes);
-    }
-
-    /**
-     * Method for mapping Unkown gamepad axis and button values
-     * to standard gamepad button and axes values.
-     */
-    private static void mapUnknownGamepad(float[] mappedButtons, float[] rawButtons,
-            float[] mappedAxes, float[] rawAxes) {
-        mapCommonXYABButtons(mappedButtons, rawButtons);
-        mapCommonTriggerButtons(mappedButtons, rawButtons);
-        mapCommonThumbstickButtons(mappedButtons, rawButtons);
-        mapCommonStartSelectMetaButtons(mappedButtons, rawButtons);
-        mapTriggerAxexToShoulderButtons(mappedButtons, rawAxes);
-        mapCommonDpadButtons(mappedButtons, rawButtons);
-
-        mapXYAxes(mappedAxes, rawAxes);
-        mapRXAndRYAxesToRightStick(mappedAxes, rawAxes);
-    }
-}