90 lines
3.0 KiB
Java
90 lines
3.0 KiB
Java
/*
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* Copyright (C) 2016 The CyanogenMod Project
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* (C) 2017 The LineageOS 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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package org.cyanogenmod.hardware;
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import org.cyanogenmod.internal.util.FileUtils;
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import cyanogenmod.hardware.TouchscreenGesture;
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/**
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* Touchscreen gestures API
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*
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* A device may implement several touchscreen gestures for use while
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* the display is turned off, such as drawing alphabets and shapes.
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* These gestures can be interpreted by userspace to activate certain
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* actions and launch certain apps, such as to skip music tracks,
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* to turn on the flashlight, or to launch the camera app.
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*
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* This *should always* be supported by the hardware directly.
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* A lot of recent touch controllers have a firmware option for this.
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*
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* This API provides support for enumerating the gestures
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* supported by the touchscreen.
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*/
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public class TouchscreenGestures {
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private static final String[] GESTURE_PATHS = {
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"/proc/touchpanel/up_swipe_enable",
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"/proc/touchpanel/down_swipe_enable",
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"/proc/touchpanel/left_swipe_enable",
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"/proc/touchpanel/right_swipe_enable",
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};
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// Id, name, keycode
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private static final TouchscreenGesture[] TOUCHSCREEN_GESTURES = {
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new TouchscreenGesture(0, "One finger up swipe", 66),
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new TouchscreenGesture(1, "One finger down swipe", 65),
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new TouchscreenGesture(2, "One finger left swipe", 64),
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new TouchscreenGesture(3, "One finger right swipe", 63),
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};
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/**
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* Whether device supports touchscreen gestures
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*
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* @return boolean Supported devices must return always true
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*/
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public static boolean isSupported() {
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return true;
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}
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/*
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* Get the list of available gestures. A mode has an integer
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* identifier and a string name.
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*
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* It is the responsibility of the upper layers to
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* map the name to a human-readable format or perform translation.
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*/
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public static TouchscreenGesture[] getAvailableGestures() {
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return TOUCHSCREEN_GESTURES;
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}
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/**
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* This method allows to set the activation status of a gesture
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*
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* @param gesture The gesture to be activated
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* state The new activation status of the gesture
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* @return boolean Must be false if gesture is not supported
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* or the operation failed; true in any other case.
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*/
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public static boolean setGestureEnabled(
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final TouchscreenGesture gesture, final boolean state) {
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return true;
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}
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}
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