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/*
* Copyright (C) 2016 The Android Open Source 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.android.settings.display;
import android.content.Context;
import android.content.res.Resources;
import android.text.BidiFormatter;
import android.text.InputType;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Slog;
import android.view.Display;
import android.view.View;
import android.widget.EditText;
import com.android.settings.R;
import com.android.settings.Utils;
import com.android.settingslib.CustomEditTextPreferenceCompat;
import com.android.settingslib.display.DisplayDensityConfiguration;
import java.text.NumberFormat;
public class DensityPreference extends CustomEditTextPreferenceCompat {
private static final String TAG = "DensityPreference";
public DensityPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void onAttached() {
super.onAttached();
final CharSequence dpValue = BidiFormatter.getInstance()
.unicodeWrap(NumberFormat.getInstance().format(getCurrentSwDp()));
setSummary(getContext().getString(R.string.density_pixel_summary,dpValue));
}
private int getCurrentSwDp() {
final Resources res = getContext().getResources();
final DisplayMetrics metrics = res.getDisplayMetrics();
final float density = metrics.density;
final int minDimensionPx = Math.min(metrics.widthPixels, metrics.heightPixels);
return (int) (minDimensionPx / density);
}
@Override
protected void onBindDialogView(View view) {
super.onBindDialogView(view);
final EditText editText = (EditText) view.findViewById(android.R.id.edit);
if (editText != null) {
editText.setInputType(InputType.TYPE_CLASS_NUMBER);
editText.setText(getCurrentSwDp() + "");
Utils.setEditTextCursorPosition(editText);
}
}
@Override
protected void onDialogClosed(boolean positiveResult) {
if (positiveResult) {
try {
final Resources res = getContext().getResources();
final DisplayMetrics metrics = res.getDisplayMetrics();
final int newSwDp = Math.max(Integer.parseInt(getText()), 320);
final int minDimensionPx = Math.min(metrics.widthPixels, metrics.heightPixels);
final int newDensity = DisplayMetrics.DENSITY_MEDIUM * minDimensionPx / newSwDp;
final int densityDpi = Math.max(newDensity, 120);
DisplayDensityConfiguration.setForcedDisplayDensity(Display.DEFAULT_DISPLAY, densityDpi);
} catch (Exception e) {
// TODO: display a message instead of silently failing.
Slog.e(TAG, "Couldn't save density", e);
}
}
}
}
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