/*
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* Copyright (C) 2017 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.launcher3.allapps;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.util.AttributeSet;
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import android.view.View;
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import android.widget.Button;
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import android.widget.LinearLayout;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.R;
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import com.android.launcher3.Utilities;
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import com.android.launcher3.pageindicators.PageIndicator;
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import com.android.launcher3.util.Themes;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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/**
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* Supports two indicator colors, dedicated for personal and work tabs.
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*/
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public class PersonalWorkSlidingTabStrip extends LinearLayout implements PageIndicator {
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private static final int POSITION_PERSONAL = 0;
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private static final int POSITION_WORK = 1;
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public static final String KEY_SHOWED_PEEK_WORK_TAB = "showed_peek_work_tab";
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private final Paint mSelectedIndicatorPaint;
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private final Paint mDividerPaint;
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private final SharedPreferences mSharedPreferences;
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private int mSelectedIndicatorHeight;
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private int mIndicatorLeft = -1;
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private int mIndicatorRight = -1;
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private float mScrollOffset;
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private int mSelectedPosition = 0;
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private AllAppsContainerView mContainerView;
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private int mLastActivePage = 0;
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private boolean mIsRtl;
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public PersonalWorkSlidingTabStrip(@NonNull Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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setOrientation(HORIZONTAL);
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setWillNotDraw(false);
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mSelectedIndicatorHeight =
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getResources().getDimensionPixelSize(R.dimen.all_apps_tabs_indicator_height);
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mSelectedIndicatorPaint = new Paint();
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mSelectedIndicatorPaint.setColor(
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Themes.getAttrColor(context, android.R.attr.colorAccent));
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mDividerPaint = new Paint();
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mDividerPaint.setColor(Themes.getAttrColor(context, android.R.attr.colorControlHighlight));
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mDividerPaint.setStrokeWidth(
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getResources().getDimensionPixelSize(R.dimen.all_apps_divider_height));
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mSharedPreferences = Launcher.getLauncher(getContext()).getSharedPrefs();
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mIsRtl = Utilities.isRtl(getResources());
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}
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private void updateIndicatorPosition(float scrollOffset) {
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mScrollOffset = scrollOffset;
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updateIndicatorPosition();
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}
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private void updateTabTextColor(int pos) {
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mSelectedPosition = pos;
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for (int i = 0; i < getChildCount(); i++) {
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Button tab = (Button) getChildAt(i);
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tab.setSelected(i == pos);
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}
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}
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@Override
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protected void onLayout(boolean changed, int l, int t, int r, int b) {
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super.onLayout(changed, l, t, r, b);
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updateTabTextColor(mSelectedPosition);
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updateIndicatorPosition(mScrollOffset);
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}
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private void updateIndicatorPosition() {
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int left = -1, right = -1;
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final View leftTab = getLeftTab();
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if (leftTab != null) {
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left = (int) (leftTab.getLeft() + leftTab.getWidth() * mScrollOffset);
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right = left + leftTab.getWidth();
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}
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setIndicatorPosition(left, right);
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}
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private View getLeftTab() {
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return mIsRtl ? getChildAt(1) : getChildAt(0);
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}
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private void setIndicatorPosition(int left, int right) {
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if (left != mIndicatorLeft || right != mIndicatorRight) {
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mIndicatorLeft = left;
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mIndicatorRight = right;
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invalidate();
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}
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}
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@Override
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protected void onDraw(Canvas canvas) {
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super.onDraw(canvas);
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float y = getHeight() - mDividerPaint.getStrokeWidth();
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canvas.drawLine(getPaddingLeft(), y, getWidth() - getPaddingRight(), y, mDividerPaint);
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canvas.drawRect(mIndicatorLeft, getHeight() - mSelectedIndicatorHeight,
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mIndicatorRight, getHeight(), mSelectedIndicatorPaint);
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}
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public void highlightWorkTabIfNecessary() {
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if (mSharedPreferences.getBoolean(KEY_SHOWED_PEEK_WORK_TAB, false)) {
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return;
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}
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if (mLastActivePage != POSITION_PERSONAL) {
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return;
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}
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highlightWorkTab();
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mSharedPreferences.edit().putBoolean(KEY_SHOWED_PEEK_WORK_TAB, true).apply();
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}
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private void highlightWorkTab() {
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View v = getChildAt(POSITION_WORK);
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v.post(() -> {
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v.setPressed(true);
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v.setPressed(false);
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});
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}
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@Override
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public void setScroll(int currentScroll, int totalScroll) {
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float scrollOffset = ((float) currentScroll) / totalScroll;
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updateIndicatorPosition(scrollOffset);
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}
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@Override
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public void setActiveMarker(int activePage) {
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updateTabTextColor(activePage);
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if (mContainerView != null && mLastActivePage != activePage) {
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mContainerView.onTabChanged(activePage);
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}
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mLastActivePage = activePage;
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}
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public void setContainerView(AllAppsContainerView containerView) {
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mContainerView = containerView;
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}
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@Override
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public void setMarkersCount(int numMarkers) { }
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@Override
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public boolean hasOverlappingRendering() {
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return false;
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}
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}
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