| /* |
| * 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.DisplayDensityUtils; |
| |
| 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); |
| DisplayDensityUtils.setForcedDisplayDensity(Display.DEFAULT_DISPLAY, densityDpi); |
| } catch (Exception e) { |
| // TODO: display a message instead of silently failing. |
| Slog.e(TAG, "Couldn't save density", e); |
| } |
| } |
| } |
| } |