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