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/*
* Copyright (C) 2020 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.wallpaper.widget;
import static android.view.View.MeasureSpec.EXACTLY;
import static android.view.View.MeasureSpec.makeMeasureSpec;
import android.app.Activity;
import android.app.WallpaperColors;
import android.content.res.ColorStateList;
import android.content.res.Configuration;
import android.graphics.Point;
import android.text.format.DateFormat;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.MainThread;
import androidx.annotation.Nullable;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.OnLifecycleEvent;
import com.android.wallpaper.R;
import com.android.wallpaper.util.ScreenSizeCalculator;
import com.android.wallpaper.util.TimeUtils;
import com.android.wallpaper.util.TimeUtils.TimeTicker;
import java.util.Calendar;
import java.util.Locale;
import java.util.TimeZone;
/** A class to load the custom lockscreen view to the preview screen. */
public class LockScreenPreviewer implements LifecycleObserver {
private static final String DEFAULT_DATE_PATTERN = "EEE, MMM d";
private Activity mActivity;
private String mDatePattern;
private TimeTicker mTicker;
private ImageView mLockIcon;
private TextView mLockTime;
private TextView mLockDate;
public LockScreenPreviewer(Lifecycle lifecycle, Activity activity, ViewGroup previewContainer) {
lifecycle.addObserver(this);
mActivity = activity;
View contentView = LayoutInflater.from(mActivity).inflate(
R.layout.lock_screen_preview, /* root= */ null);
mLockIcon = contentView.findViewById(R.id.lock_icon);
mLockTime = contentView.findViewById(R.id.lock_time);
mLockDate = contentView.findViewById(R.id.lock_date);
mDatePattern = DateFormat.getBestDateTimePattern(Locale.getDefault(), DEFAULT_DATE_PATTERN);
Display defaultDisplay = mActivity.getWindowManager().getDefaultDisplay();
Point screenSize = ScreenSizeCalculator.getInstance().getScreenSize(defaultDisplay);
Configuration config = mActivity.getResources().getConfiguration();
final boolean directionLTR = config.getLayoutDirection() == View.LAYOUT_DIRECTION_LTR;
View rootView = previewContainer.getRootView();
rootView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View view, int left, int top, int right, int bottom,
int oldLeft, int oldTop, int oldRight, int oldBottom) {
int cardHeight = previewContainer.getMeasuredHeight();
// Relayout the content view to match full screen size.
contentView.measure(
makeMeasureSpec(screenSize.x, EXACTLY),
makeMeasureSpec(screenSize.y, EXACTLY));
contentView.layout(0, 0, screenSize.x, screenSize.y);
// Scale the content view from full screen size to the container(card) size.
float scale = (float) cardHeight / screenSize.y;
contentView.setScaleX(scale);
contentView.setScaleY(scale);
// The pivot point is centered by default, set to (0, 0).
contentView.setPivotX(directionLTR ? 0f : contentView.getMeasuredWidth());
contentView.setPivotY(0f);
previewContainer.removeAllViews();
previewContainer.addView(
contentView,
contentView.getMeasuredWidth(),
contentView.getMeasuredHeight());
rootView.removeOnLayoutChangeListener(this);
}
});
}
@OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
@MainThread
public void onResume() {
mTicker = TimeTicker.registerNewReceiver(mActivity, this::updateDateTime);
updateDateTime();
}
@OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
@MainThread
public void onPause() {
if (mActivity != null) {
mActivity.unregisterReceiver(mTicker);
}
}
/**
* Sets the content's color based on the wallpaper's {@link WallpaperColors}.
*
* @param colors the {@link WallpaperColors} of the wallpaper which the lock screen overlay
* will attach to, or {@code null} to use light color as default
*/
public void setColor(@Nullable WallpaperColors colors) {
boolean useLightTextColor = colors == null
|| (colors.getColorHints() & WallpaperColors.HINT_SUPPORTS_DARK_TEXT) == 0;
int color = mActivity.getColor(useLightTextColor
? R.color.text_color_light : R.color.text_color_dark);
int textShadowColor = mActivity.getColor(useLightTextColor
? R.color.smartspace_preview_shadow_color_dark
: R.color.smartspace_preview_shadow_color_transparent);
mLockIcon.setImageTintList(ColorStateList.valueOf(color));
mLockDate.setTextColor(color);
mLockTime.setTextColor(color);
mLockDate.setShadowLayer(
mActivity.getResources().getDimension(
R.dimen.smartspace_preview_key_ambient_shadow_blur),
/* dx = */ 0,
/* dy = */ 0,
textShadowColor);
mLockTime.setShadowLayer(
mActivity.getResources().getDimension(
R.dimen.smartspace_preview_key_ambient_shadow_blur),
/* dx = */ 0,
/* dy = */ 0,
textShadowColor);
}
private void updateDateTime() {
Calendar calendar = Calendar.getInstance(TimeZone.getDefault());
mLockTime.setText(TimeUtils.getFormattedTime(mActivity, calendar));
mLockDate.setText(DateFormat.format(mDatePattern, calendar));
}
}
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