| /* |
| * Copyright (C) 2015 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; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.hardware.display.DisplayManager; |
| import android.hardware.display.DisplayManager.DisplayListener; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.support.v14.preference.SwitchPreference; |
| import android.util.AttributeSet; |
| import android.view.Display; |
| import android.view.Display.ColorTransform; |
| |
| import java.util.ArrayList; |
| |
| public class ColorModePreference extends SwitchPreference implements DisplayListener { |
| |
| private DisplayManager mDisplayManager; |
| private Display mDisplay; |
| |
| private int mCurrentIndex; |
| private ArrayList<ColorTransformDescription> mDescriptions; |
| |
| public ColorModePreference(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mDisplayManager = getContext().getSystemService(DisplayManager.class); |
| } |
| |
| public int getTransformsCount() { |
| return mDescriptions.size(); |
| } |
| |
| public void startListening() { |
| mDisplayManager.registerDisplayListener(this, new Handler(Looper.getMainLooper())); |
| } |
| |
| public void stopListening() { |
| mDisplayManager.unregisterDisplayListener(this); |
| } |
| |
| @Override |
| public void onDisplayAdded(int displayId) { |
| if (displayId == Display.DEFAULT_DISPLAY) { |
| updateCurrentAndSupported(); |
| } |
| } |
| |
| @Override |
| public void onDisplayChanged(int displayId) { |
| if (displayId == Display.DEFAULT_DISPLAY) { |
| updateCurrentAndSupported(); |
| } |
| } |
| |
| @Override |
| public void onDisplayRemoved(int displayId) { |
| } |
| |
| public void updateCurrentAndSupported() { |
| mDisplay = mDisplayManager.getDisplay(Display.DEFAULT_DISPLAY); |
| |
| mDescriptions = new ArrayList<>(); |
| |
| Resources resources = getContext().getResources(); |
| int[] transforms = resources.getIntArray( |
| com.android.internal.R.array.config_colorTransforms); |
| String[] titles = resources.getStringArray(R.array.color_mode_names); |
| String[] descriptions = resources.getStringArray(R.array.color_mode_descriptions); |
| // Map the resource information describing color transforms. |
| for (int i = 0; i < transforms.length; i++) { |
| if (transforms[i] != -1 && i != 1 /* Skip Natural for now. */) { |
| ColorTransformDescription desc = new ColorTransformDescription(); |
| desc.colorTransform = transforms[i]; |
| desc.title = titles[i]; |
| desc.summary = descriptions[i]; |
| mDescriptions.add(desc); |
| } |
| } |
| // Match up a ColorTransform to every description. |
| ColorTransform[] supportedColorTransforms = mDisplay.getSupportedColorTransforms(); |
| for (int i = 0; i < supportedColorTransforms.length; i++) { |
| for (int j = 0; j < mDescriptions.size(); j++) { |
| if (mDescriptions.get(j).colorTransform |
| == supportedColorTransforms[i].getColorTransform() |
| && mDescriptions.get(j).transform == null) { |
| mDescriptions.get(j).transform = supportedColorTransforms[i]; |
| break; |
| } |
| } |
| } |
| // Remove any extras that don't have a transform for some reason. |
| for (int i = 0; i < mDescriptions.size(); i++) { |
| if (mDescriptions.get(i).transform == null) { |
| mDescriptions.remove(i--); |
| } |
| } |
| |
| ColorTransform currentTransform = mDisplay.getColorTransform(); |
| mCurrentIndex = -1; |
| for (int i = 0; i < mDescriptions.size(); i++) { |
| if (mDescriptions.get(i).colorTransform == currentTransform.getColorTransform()) { |
| mCurrentIndex = i; |
| break; |
| } |
| } |
| setChecked(mCurrentIndex == 1); |
| } |
| |
| @Override |
| protected boolean persistBoolean(boolean value) { |
| // Right now this is a switch, so we only support two modes. |
| if (mDescriptions.size() == 2) { |
| ColorTransformDescription desc = mDescriptions.get(value ? 1 : 0); |
| |
| mDisplay.requestColorTransform(desc.transform); |
| mCurrentIndex = mDescriptions.indexOf(desc); |
| } |
| |
| return true; |
| } |
| |
| private static class ColorTransformDescription { |
| private int colorTransform; |
| private String title; |
| private String summary; |
| private ColorTransform transform; |
| } |
| } |