fd3911ba29
This slider is temporary and will be replaced by the final UI in the next couple weeks. In this first version, the slider is added in Settings -> Accessibility -> Color and motion. It is discrete with three values. The slider manipulates the setting currently named CONTRAST_LEVEL in Settings.Secure. This setting is ranging from [-1, 1] with a default value of 0. However, the three values of the slider correspond to the contrast values [0, 0.5, 1] respectively Test: Manual: put a log before Settings.System.putFloatForUser, move the slider manually and verify the logs Test: make RunSettingsRoboTests ROBOTEST_FILTER=ContrastLevelSeekBar Bug: 259091608 Change-Id: I2eaf751d6008ad20b3564dde2c0f4648cc6c8178
74 lines
2.5 KiB
Java
74 lines
2.5 KiB
Java
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.accessibility;
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import android.content.Context;
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import android.os.UserHandle;
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import android.provider.Settings;
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import android.util.AttributeSet;
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import androidx.core.content.res.TypedArrayUtils;
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import androidx.preference.PreferenceViewHolder;
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import com.android.settings.R;
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import com.android.settings.widget.SeekBarPreference;
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/** A slider preference that directly controls the contrast level **/
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public class ContrastLevelSeekBarPreference extends SeekBarPreference {
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/**
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* The number of ticks of the slider (the more ticks, the more continuous the slider feels).
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*/
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public static final int CONTRAST_SLIDER_TICKS = 2;
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private final Context mContext;
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private ContrastLevelSeekBar mSeekBar;
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public ContrastLevelSeekBarPreference(Context context, AttributeSet attrs) {
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super(context, attrs, TypedArrayUtils.getAttr(context,
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R.attr.preferenceStyle,
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android.R.attr.preferenceStyle));
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mContext = context;
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setLayoutResource(R.layout.preference_contrast_level_slider);
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}
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@Override
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public void onBindViewHolder(PreferenceViewHolder view) {
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super.onBindViewHolder(view);
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mSeekBar = (ContrastLevelSeekBar) view.findViewById(
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com.android.internal.R.id.seekbar);
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init();
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}
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private void init() {
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if (mSeekBar == null) {
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return;
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}
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final float contrastLevel = Settings.Secure.getFloatForUser(
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mContext.getContentResolver(), Settings.Secure.CONTRAST_LEVEL,
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0.f /* default */, UserHandle.USER_CURRENT);
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mSeekBar.setMax(CONTRAST_SLIDER_TICKS);
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// Rescale contrast from [0, 0.5, 1] to [0, 1, 2]
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int progress = Math.max(0, Math.round(contrastLevel * CONTRAST_SLIDER_TICKS));
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mSeekBar.setProgress(progress);
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mSeekBar.setEnabled(isEnabled());
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}
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}
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