galaxys2: pimp my vibrator

Change-Id: I71781be97d01598f83be3db828ebaf91c8211b78

6 files changed, 254 insertions, 69 deletions

diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java b/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
index 7f7970c..c4ff285 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
@@ -46,7 +46,6 @@ public class DeviceSettings extends FragmentActivity {
     public static final String KEY_TOUCHSCREEN_SENSITIVITY = "touchscreen_sensitivity";
     public static final String KEY_TOUCHKEY_LIGHT = "touchkey_light";
     public static final String KEY_TOUCHKEY_TIMEOUT = "touchkey_timeout";
-    public static final String KEY_VIBRATOR_INTENSITY = "vibrator_intensity";
     public static final String KEY_USE_DOCK_AUDIO = "dock_audio";
 
     ViewPager mViewPager;
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/HapticFragmentActivity.java b/DeviceSettings/src/com/cyanogenmod/settings/device/HapticFragmentActivity.java
index 176d80a..f55b59e 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/HapticFragmentActivity.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/HapticFragmentActivity.java
@@ -17,9 +17,9 @@
 package com.cyanogenmod.settings.device;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.content.SharedPreferences;
 import android.os.Bundle;
-import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
@@ -32,27 +32,33 @@ import com.cyanogenmod.settings.device.R;
 
 public class HapticFragmentActivity extends PreferenceFragment {
 
-    private static final String PREF_ENABLED = "1";
     private static final String TAG = "DeviceSettings_Haptic";
+    public static final String KEY_VIBRATOR_TUNING = "vibrator_tuning";
+
+    private static boolean sVibratorTuning;
+    private VibratorTuningPreference mVibratorTuning;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        addPreferencesFromResource(R.xml.haptic_preferences);
+        Resources res = getResources();
+        sVibratorTuning = res.getBoolean(R.bool.has_vibrator_tuning);
 
-        PreferenceScreen prefSet = getPreferenceScreen();
+        addPreferencesFromResource(R.xml.haptic_preferences);
 
+        if (sVibratorTuning) {
+            String vibratorFilePath = res.getString(R.string.vibrator_sysfs_file);
+            mVibratorTuning = (VibratorTuningPreference) findPreference(KEY_VIBRATOR_TUNING);
+            mVibratorTuning.setEnabled(VibratorTuningPreference.isSupported(vibratorFilePath));
+        }
     }
 
     @Override
     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
-
         String boxValue;
         String key = preference.getKey();
-
         Log.w(TAG, "key: " + key);
-
         return true;
     }
 
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java b/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
index 5296d76..e9c1b49 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java
@@ -34,6 +34,6 @@ public class Startup extends BroadcastReceiver {
         ScreenFragmentActivity.restore(context);
         SensorsFragmentActivity.restore(context);
         TouchkeyTimeout.restore(context);
-        VibratorIntensity.restore(context);
+        VibratorTuningPreference.restore(context);
     }
 }
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/Utils.java b/DeviceSettings/src/com/cyanogenmod/settings/device/Utils.java
index bd8eb65..4ca2e9e 100644
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/Utils.java
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/Utils.java
@@ -18,9 +18,11 @@ package com.cyanogenmod.settings.device;
 
 import android.util.Log;
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
+import java.io.FileReader;
 import java.io.IOException;
 import java.io.SyncFailedException;
 import android.app.AlertDialog;
@@ -33,6 +35,25 @@ public class Utils {
     private static final String TAG_READ = "DeviceSettings_Utils_Read";
     private static final String TAG_WRITE = "DeviceSettings_Utils_Write";
 
+    // Read value from sysfs interface
+    public static String readOneLine(String sFile) {
+        BufferedReader brBuffer;
+        String sLine = null;
+
+        try {
+            brBuffer = new BufferedReader(new FileReader(sFile), 512);
+            try {
+                sLine = brBuffer.readLine();
+            } finally {
+                Log.w(TAG_READ, "file " + sFile + ": " + sLine);
+                brBuffer.close();
+            }
+        } catch (Exception e) {
+            Log.e(TAG_READ, "IO Exception when reading /sys/ file", e);
+        }
+        return sLine;
+    }
+
     /**
      * Write a string value to the specified file.
      * 
@@ -128,7 +149,6 @@ public class Utils {
         return new File(filename).exists();
     }
 
-
     public static void showDialog(Context ctx, String title, String message) {
         final AlertDialog alertDialog = new AlertDialog.Builder(ctx).create();
         alertDialog.setTitle(title);
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/VibratorIntensity.java b/DeviceSettings/src/com/cyanogenmod/settings/device/VibratorIntensity.java
deleted file mode 100644
index 7a809a5..0000000
--- a/DeviceSettings/src/com/cyanogenmod/settings/device/VibratorIntensity.java
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (C) 2012 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 com.cyanogenmod.settings.device;
-
-import java.io.IOException;
-import android.content.Context;
-import android.util.AttributeSet;
-import android.content.SharedPreferences;
-import android.preference.Preference;
-import android.preference.ListPreference;
-import android.preference.Preference.OnPreferenceChangeListener;
-import android.preference.PreferenceManager;
-
-public class VibratorIntensity extends ListPreference implements OnPreferenceChangeListener {
-
-    public VibratorIntensity(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        this.setOnPreferenceChangeListener(this);
-    }
-
-    private static final String FILE = "/sys/vibrator/pwm_val";
-
-    public static boolean isSupported() {
-        return Utils.fileExists(FILE);
-    }
-
-    /**
-     * Restore vibrator intensity setting from SharedPreferences. (Write to kernel.)
-     * @param context       The context to read the SharedPreferences from
-     */
-    public static void restore(Context context) {
-        if (!isSupported()) {
-            return;
-        }
-
-        SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context);
-        Utils.writeValue(FILE, sharedPrefs.getString(DeviceSettings.KEY_VIBRATOR_INTENSITY, "50"));
-    }
-
-    public boolean onPreferenceChange(Preference preference, Object newValue) {
-        Utils.writeValue(FILE, (String) newValue);
-        return true;
-    }
-
-}
diff --git a/DeviceSettings/src/com/cyanogenmod/settings/device/VibratorTuningPreference.java b/DeviceSettings/src/com/cyanogenmod/settings/device/VibratorTuningPreference.java
new file mode 100644
index 0000000..b9e7bb5
--- /dev/null
+++ b/DeviceSettings/src/com/cyanogenmod/settings/device/VibratorTuningPreference.java
@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2013 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 com.cyanogenmod.settings.device;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.graphics.Color;
+import android.graphics.LightingColorFilter;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.LayerDrawable;
+import android.os.Bundle;
+import android.os.Vibrator;
+import android.preference.DialogPreference;
+import android.preference.PreferenceManager;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.View;
+import android.widget.SeekBar;
+import android.widget.TextView;
+import android.widget.Button;
+
+import java.lang.Math;
+import java.text.DecimalFormat;
+
+/**
+ * Special preference type that allows configuration of vibrator intensity settings on Sony
+ * Devices
+ */
+public class VibratorTuningPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener {
+    private static final String TAG = "DeviceSettings_Vibrator";
+
+    private static String FILE_PATH = null;
+    private static int MAX_VALUE;
+    private static int WARNING_THRESHOLD;
+    private static int DEFAULT_VALUE;
+    private static int MIN_VALUE;
+
+    private SeekBar mSeekBar;
+    private TextView mValue;
+    private TextView mWarning;
+
+    private String mOriginalValue;
+    private int mOriginalPercent;
+
+    private Drawable mProgressDrawable;
+    private Drawable mProgressThumb;
+    private LightingColorFilter mRedFilter;
+
+    public VibratorTuningPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        FILE_PATH = context.getResources().getString(R.string.vibrator_sysfs_file);
+        MAX_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_max_value));
+        WARNING_THRESHOLD = Integer.valueOf(context.getResources().getString(R.string.intensity_warning_threshold));
+        DEFAULT_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_default_value));
+        MIN_VALUE = Integer.valueOf(context.getResources().getString(R.string.intensity_min_value));
+
+        setDialogLayoutResource(R.layout.preference_dialog_vibrator_tuning);
+    }
+
+    @Override
+    protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
+        builder.setNeutralButton(R.string.defaults_button, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+            }
+        });
+    }
+
+    @Override
+    protected void onBindDialogView(View view) {
+        super.onBindDialogView(view);
+
+        mSeekBar = (SeekBar) view.findViewById(R.id.vibrator_seekbar);
+        mValue = (TextView) view.findViewById(R.id.vibrator_value);
+        mWarning = (TextView) view.findViewById(R.id.textWarn);
+
+        String strWarnMsg = getContext().getResources().getString(R.string.vibrator_warning, strengthToPercent(WARNING_THRESHOLD));
+        mWarning.setText(strWarnMsg);
+
+        Drawable progressDrawable = mSeekBar.getProgressDrawable();
+        if (progressDrawable instanceof LayerDrawable) {
+            LayerDrawable ld = (LayerDrawable) progressDrawable;
+            mProgressDrawable = ld.findDrawableByLayerId(android.R.id.progress);
+        }
+        mProgressThumb = mSeekBar.getThumb();
+        mRedFilter = new LightingColorFilter(Color.BLACK,
+                getContext().getResources().getColor(android.R.color.holo_red_light));
+
+        mOriginalValue = Utils.readOneLine(FILE_PATH);
+        mOriginalPercent = strengthToPercent(Integer.parseInt(mOriginalValue));
+
+        mSeekBar.setOnSeekBarChangeListener(this);
+        mSeekBar.setProgress(Integer.valueOf(mOriginalPercent));
+    }
+
+    @Override
+    protected void showDialog(Bundle state) {
+        super.showDialog(state);
+
+        // can't use onPrepareDialogBuilder for this as we want the dialog
+        // to be kept open on click
+        AlertDialog d = (AlertDialog) getDialog();
+        Button defaultsButton = d.getButton(DialogInterface.BUTTON_NEUTRAL);
+        defaultsButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mSeekBar.setProgress(strengthToPercent(DEFAULT_VALUE));
+            }
+        });
+    }
+
+    @Override
+    protected void onDialogClosed(boolean positiveResult) {
+        super.onDialogClosed(positiveResult);
+
+        if (positiveResult) {
+            Editor editor = getEditor();
+
+            int strength = percentToStrength(mSeekBar.getProgress());
+            editor.putString(FILE_PATH, String.valueOf(strength));
+            editor.commit();
+        } else {
+            Utils.writeValue(FILE_PATH, String.valueOf(mOriginalPercent));
+        }
+    }
+
+    public static void restore(Context context) {
+        FILE_PATH = context.getResources().getString(R.string.vibrator_sysfs_file);
+
+        if (!isSupported(FILE_PATH)) {
+            return;
+        }
+
+        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        final String value = prefs.getString(FILE_PATH, null);
+
+        if (value != null) {
+            Log.d(TAG, "Restoring vibration setting: " + value);
+            Utils.writeValue(FILE_PATH, value);
+        }
+    }
+
+    public static boolean isSupported(String filePath) {
+        return Utils.fileExists(filePath);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        boolean shouldWarn = progress >= strengthToPercent(WARNING_THRESHOLD);
+        if (mProgressDrawable != null) {
+            mProgressDrawable.setColorFilter(shouldWarn ? mRedFilter : null);
+        }
+        if (mProgressThumb != null) {
+            mProgressThumb.setColorFilter(shouldWarn ? mRedFilter : null);
+        }
+        Utils.writeValue(FILE_PATH, String.valueOf(percentToStrength(progress)));
+        mValue.setText(String.format("%d%%", progress));
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {
+        // Do nothing
+    }
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {
+        Vibrator vib = (Vibrator) getContext().getSystemService(Context.VIBRATOR_SERVICE);
+        vib.vibrate(200);
+    }
+
+    /**
+    * Convert vibrator strength to percent
+    */
+    public static int strengthToPercent(int strength) {
+        double maxValue = MAX_VALUE;
+        double minValue = MIN_VALUE;
+
+        double percent = (strength - minValue) * (100 / (maxValue - minValue));
+
+        if (percent > 100)
+            percent = 100;
+        else if (percent < 0)
+            percent = 0;
+
+        return (int) percent;
+    }
+
+    /**
+    * Convert percent to vibrator strength
+    */
+    public static int percentToStrength(int percent) {
+        int strength = Math.round((((MAX_VALUE - MIN_VALUE) * percent) / 100) + MIN_VALUE);
+
+        if (strength > MAX_VALUE)
+            strength = MAX_VALUE;
+        else if (strength < MIN_VALUE)
+            strength = MIN_VALUE;
+
+        return strength;
+    }
+}