msm8916-common: Switch to the CMHW touchscreen gestures implementation

Change-Id: I94005a36327bc6238167dbddb35f8c3dcb747955

2 files changed, 138 insertions, 0 deletions

diff --git a/cmhw/org/cyanogenmod/hardware/TouchscreenGestures.java b/cmhw/org/cyanogenmod/hardware/TouchscreenGestures.java
new file mode 100644
index 0000000..890e364
--- /dev/null
+++ b/cmhw/org/cyanogenmod/hardware/TouchscreenGestures.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2016 The CyanogenMod Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.cyanogenmod.hardware;
+
+import org.cyanogenmod.internal.util.FileUtils;
+
+import cyanogenmod.hardware.TouchscreenGesture;
+
+/**
+ * Touchscreen gestures API
+ *
+ * A device may implement several touchscreen gestures for use while
+ * the display is turned off, such as drawing alphabets and shapes.
+ * These gestures can be interpreted by userspace to activate certain
+ * actions and launch certain apps, such as to skip music tracks,
+ * to turn on the flashlight, or to launch the camera app.
+ *
+ * This *should always* be supported by the hardware directly.
+ * A lot of recent touch controllers have a firmware option for this.
+ *
+ * This API provides support for enumerating the gestures
+ * supported by the touchscreen.
+ */
+public class TouchscreenGestures {
+
+    private static final String GESTURE_PATH =
+            "/sys/bus/i2c/devices/i2c-5/5-0038/gesture_mode";
+
+    // Id, name, keycode
+    private static final TouchscreenGesture[] TOUCHSCREEN_GESTURES = {
+        new TouchscreenGesture(0, "Letter C", 265),
+        new TouchscreenGesture(1, "Letter e", 266),
+        new TouchscreenGesture(2, "Letter S", 267),
+        new TouchscreenGesture(3, "Letter V", 263),
+        new TouchscreenGesture(4, "Letter W", 268),
+        new TouchscreenGesture(5, "Letter Z", 264),
+    };
+
+    private static final int KEY_MASK_GESTURE_CONTROL = 0x40;
+    public static final int[] ALL_GESTURE_MASKS = {
+        0x04, // c gesture mask
+        0x08, // e gesture mask
+        0x10, // s gesture mask
+        0x01, // v gesture mask
+        0x20, // w gesture mask
+        0x02, // z gesture mask
+    };
+
+    /**
+     * Whether device supports touchscreen gestures
+     *
+     * @return boolean Supported devices must return always true
+     */
+    public static boolean isSupported() {
+        return FileUtils.isFileWritable(GESTURE_PATH) &&
+                FileUtils.isFileReadable(GESTURE_PATH);
+    }
+
+    /*
+     * Get the list of available gestures. A mode has an integer
+     * identifier and a string name.
+     *
+     * It is the responsibility of the upper layers to
+     * map the name to a human-readable format or perform translation.
+     */
+    public static TouchscreenGesture[] getAvailableGestures() {
+        return TOUCHSCREEN_GESTURES;
+    }
+
+    /**
+     * This method allows to set the activation status of a gesture
+     *
+     * @param gesture The gesture to be activated
+     *        state   The new activation status of the gesture
+     * @return boolean Must be false if gesture is not supported
+     *         or the operation failed; true in any other case.
+     */
+    public static boolean setGestureEnabled(
+            final TouchscreenGesture gesture, final boolean state) {
+        int gestureMode = Integer.parseInt(FileUtils.readOneLine(GESTURE_PATH));
+        int mask = ALL_GESTURE_MASKS[gesture.id];
+
+        if (state)
+            gestureMode |= mask;
+        else
+            gestureMode &= ~mask;
+
+        if (gestureMode != 0)
+            gestureMode |= KEY_MASK_GESTURE_CONTROL;
+
+        return FileUtils.writeLine(GESTURE_PATH, String.format("%7s",
+                Integer.toBinaryString(gestureMode)).replace(' ', '0'));
+    }
+}
diff --git a/overlay/packages/apps/CMParts/res/values/config.xml b/overlay/packages/apps/CMParts/res/values/config.xml
new file mode 100644
index 0000000..c12d76b
--- /dev/null
+++ b/overlay/packages/apps/CMParts/res/values/config.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+   Copyright 2016, The CyanogenMod Project
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+-->
+
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <!-- Default action ids for a device's touchscreen gestures
+         The array should be sorted in the same order as the
+         touchscreen gestures advertised by the device's CMHW impl. -->
+    <integer-array name="config_defaultTouchscreenGestureActions">
+        <item>2</item>
+        <item>5</item>
+        <item>6</item>
+        <item>4</item>
+        <item>3</item>
+        <item>1</item>
+    </integer-array>
+</resources>