src/com/android/customization/picker/theme/ThemeOptionPreviewer.java - platform/packages/apps/ThemePicker - Git at Google

 /*
  * 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.customization.picker.theme;

 import static android.view.View.MeasureSpec.EXACTLY;
 import static android.view.View.MeasureSpec.makeMeasureSpec;

 import android.app.WallpaperColors;
 import android.content.Context;
 import android.content.res.ColorStateList;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.GradientDrawable;
 import android.text.format.DateFormat;
 import android.util.DisplayMetrics;
 import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.animation.AnimationUtils;
 import android.widget.CompoundButton;
 import android.widget.ImageView;
 import android.widget.Switch;
 import android.widget.TextView;

 import androidx.annotation.MainThread;
 import androidx.annotation.Nullable;
 import androidx.cardview.widget.CardView;
 import androidx.lifecycle.Lifecycle;
 import androidx.lifecycle.LifecycleObserver;
 import androidx.lifecycle.OnLifecycleEvent;

 import com.android.customization.model.theme.ThemeBundle;
 import com.android.customization.model.theme.ThemeBundle.PreviewInfo;
 import com.android.customization.model.theme.ThemeBundle.PreviewInfo.ShapeAppIcon;
 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.List;
 import java.util.Locale;
 import java.util.TimeZone;

 /** A class to load the {@link ThemeBundle} preview to the view. */
 class ThemeOptionPreviewer implements LifecycleObserver {
     private static final String DATE_FORMAT = "EEEE, MMM d";

     // Maps which icon from ResourceConstants#ICONS_FOR_PREVIEW.
     private static final int ICON_WIFI = 0;
     private static final int ICON_BLUETOOTH = 1;
     private static final int ICON_FLASHLIGHT = 3;
     private static final int ICON_AUTO_ROTATE = 4;
     private static final int ICON_CELLULAR_SIGNAL = 6;
     private static final int ICON_BATTERY = 7;

     // Icons in the top bar (fake "status bar") with the particular order.
     private static final int [] sTopBarIconToPreviewIcon = new int [] {
             ICON_WIFI, ICON_CELLULAR_SIGNAL, ICON_BATTERY };

     // Ids of app icon shape preview.
     private int[] mShapeAppIconIds = {
             R.id.shape_preview_icon_0, R.id.shape_preview_icon_1,
             R.id.shape_preview_icon_2, R.id.shape_preview_icon_3
     };
     private int[] mShapeIconAppNameIds = {
             R.id.shape_preview_icon_app_name_0, R.id.shape_preview_icon_app_name_1,
             R.id.shape_preview_icon_app_name_2, R.id.shape_preview_icon_app_name_3
     };

     // Ids of color/icons section.
     private int[][] mColorTileIconIds = {
             new int[] { R.id.preview_color_qs_0_icon, ICON_WIFI},
             new int[] { R.id.preview_color_qs_1_icon, ICON_BLUETOOTH},
             new int[] { R.id.preview_color_qs_2_icon, ICON_FLASHLIGHT},
             new int[] { R.id.preview_color_qs_3_icon, ICON_AUTO_ROTATE},
     };
     private int[] mColorTileIds = {
             R.id.preview_color_qs_0_bg, R.id.preview_color_qs_1_bg,
             R.id.preview_color_qs_2_bg, R.id.preview_color_qs_3_bg
     };
     private int[] mColorButtonIds = {
             R.id.preview_check_selected, R.id.preview_radio_selected, R.id.preview_toggle_selected
     };

     private final Context mContext;

     private View mContentView;
     private TextView mStatusBarClock;
     private TextView mSmartSpaceDate;
     private TimeTicker mTicker;

     private boolean mHasPreviewInfoSet;
     private boolean mHasWallpaperColorSet;

     ThemeOptionPreviewer(Lifecycle lifecycle, Context context, ViewGroup previewContainer) {
         lifecycle.addObserver(this);

         mContext = context;
         mContentView = LayoutInflater.from(context).inflate(
                 R.layout.theme_preview_content, /* root= */ null);
         mContentView.setVisibility(View.INVISIBLE);
         mStatusBarClock = mContentView.findViewById(R.id.theme_preview_clock);
         mSmartSpaceDate = mContentView.findViewById(R.id.smart_space_date);
         updateTime();
         final float screenAspectRatio =
                 ScreenSizeCalculator.getInstance().getScreenAspectRatio(mContext);
         Configuration config = mContext.getResources().getConfiguration();
         final boolean directionLTR = config.getLayoutDirection() == View.LAYOUT_DIRECTION_LTR;
         previewContainer.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) {
                 // Calculate the full preview card height and width.
                 final int fullPreviewCardHeight = getFullPreviewCardHeight();
                 final int fullPreviewCardWidth = (int) (fullPreviewCardHeight / screenAspectRatio);

                 // Relayout the content view to match full preview card size.
                 mContentView.measure(
                         makeMeasureSpec(fullPreviewCardWidth, EXACTLY),
                         makeMeasureSpec(fullPreviewCardHeight, EXACTLY));
                 mContentView.layout(0, 0, fullPreviewCardWidth, fullPreviewCardHeight);

                 // Scale the content view from full preview size to the container size. For full
                 // preview, the scale value is 1.
                 float scale = (float) previewContainer.getMeasuredHeight() / fullPreviewCardHeight;
                 mContentView.setScaleX(scale);
                 mContentView.setScaleY(scale);
                 // The pivot point is centered by default, set to (0, 0).
                 mContentView.setPivotX(directionLTR ? 0f : mContentView.getMeasuredWidth());
                 mContentView.setPivotY(0f);

                 // Ensure there will be only one content view in the container.
                 previewContainer.removeAllViews();
                 // Finally, add the content view to the container.
                 previewContainer.addView(
                         mContentView,
                         mContentView.getMeasuredWidth(),
                         mContentView.getMeasuredHeight());

                 previewContainer.removeOnLayoutChangeListener(this);
             }
         });
     }

     /** Loads the Theme option preview into the container view. */
     public void setPreviewInfo(PreviewInfo previewInfo) {
         setHeadlineFont(previewInfo.headlineFontFamily);
         setBodyFont(previewInfo.bodyFontFamily);
         setTopBarIcons(previewInfo.icons);
         setAppIconShape(previewInfo.shapeAppIcons);
         setColorAndIconsSection(previewInfo.icons, previewInfo.shapeDrawable,
                 previewInfo.resolveAccentColor(mContext.getResources()));
         setColorAndIconsBoxRadius(previewInfo.bottomSheeetCornerRadius);
         setQsbRadius(previewInfo.bottomSheeetCornerRadius);
         mHasPreviewInfoSet = true;
         showPreviewIfHasAllConfigSet();
     }

     /**
      * Updates the color of widgets in launcher (like top status bar, smart space, and app name
      * text) which will change its content color according to different wallpapers.
      *
      * @param colors the {@link WallpaperColors} of the wallpaper, or {@code null} to use light
      *               color as default
      */
     public void updateColorForLauncherWidgets(@Nullable WallpaperColors colors) {
         boolean useLightTextColor = colors == null
                 || (colors.getColorHints() & WallpaperColors.HINT_SUPPORTS_DARK_TEXT) == 0;
         int textColor = mContext.getColor(useLightTextColor
                 ? R.color.text_color_light
                 : R.color.text_color_dark);
         int textShadowColor = mContext.getColor(useLightTextColor
                 ? R.color.smartspace_preview_shadow_color_dark
                 : R.color.smartspace_preview_shadow_color_transparent);
         // Update the top status bar clock text color.
         mStatusBarClock.setTextColor(textColor);
         // Update the top status bar icon color.
         ViewGroup iconsContainer = mContentView.findViewById(R.id.theme_preview_top_bar_icons);
         for (int i = 0; i < iconsContainer.getChildCount(); i++) {
             ((ImageView) iconsContainer.getChildAt(i))
                     .setImageTintList(ColorStateList.valueOf(textColor));
         }
         // Update smart space date color.
         mSmartSpaceDate.setTextColor(textColor);
         mSmartSpaceDate.setShadowLayer(
                 mContext.getResources().getDimension(
                         R.dimen.smartspace_preview_key_ambient_shadow_blur),
                 /* dx = */ 0,
                 /* dy = */ 0,
                 textShadowColor);

         // Update shape app icon name text color.
         for (int id : mShapeIconAppNameIds) {
             TextView appName = mContentView.findViewById(id);
             appName.setTextColor(textColor);
             appName.setShadowLayer(
                     mContext.getResources().getDimension(
                             R.dimen.preview_theme_app_name_key_ambient_shadow_blur),
                     /* dx = */ 0,
                     /* dy = */ 0,
                     textShadowColor);
         }

         mHasWallpaperColorSet = true;
         showPreviewIfHasAllConfigSet();
     }

     @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
     @MainThread
     public void onResume() {
         mTicker = TimeTicker.registerNewReceiver(mContext, this::updateTime);
         updateTime();
     }

     @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
     @MainThread
     public void onPause() {
         if (mContext != null) {
             mContext.unregisterReceiver(mTicker);
         }
     }

     private void showPreviewIfHasAllConfigSet() {
         if (mHasPreviewInfoSet && mHasWallpaperColorSet
                 && mContentView.getVisibility() != View.VISIBLE) {
             mContentView.setAlpha(0f);
             mContentView.setVisibility(View.VISIBLE);
             mContentView.animate().alpha(1f)
                     .setStartDelay(50)
                     .setDuration(200)
                     .setInterpolator(AnimationUtils.loadInterpolator(mContext,
                             android.R.interpolator.fast_out_linear_in))
                     .start();
         }
     }

     private void setHeadlineFont(Typeface headlineFont) {
         mStatusBarClock.setTypeface(headlineFont);
         mSmartSpaceDate.setTypeface(headlineFont);

         // Update font of color/icons section title.
         TextView colorIconsSectionTitle = mContentView.findViewById(R.id.color_icons_section_title);
         colorIconsSectionTitle.setTypeface(headlineFont);
     }

     private void setBodyFont(Typeface bodyFont) {
         // Update font of app names.
         for (int id : mShapeIconAppNameIds) {
             TextView appName = mContentView.findViewById(id);
             appName.setTypeface(bodyFont);
         }
     }

     private void setTopBarIcons(List<Drawable> icons) {
         ViewGroup iconsContainer = mContentView.findViewById(R.id.theme_preview_top_bar_icons);
         for (int i = 0; i < iconsContainer.getChildCount(); i++) {
             int iconIndex = sTopBarIconToPreviewIcon[i];
             if (iconIndex < icons.size()) {
                 ((ImageView) iconsContainer.getChildAt(i))
                         .setImageDrawable(icons.get(iconIndex).getConstantState()
                                 .newDrawable().mutate());
             } else {
                 iconsContainer.getChildAt(i).setVisibility(View.GONE);
             }
         }
     }

     private void setAppIconShape(List<ShapeAppIcon> appIcons) {
         for (int i = 0; i < mShapeAppIconIds.length && i < mShapeIconAppNameIds.length
                 && i < appIcons.size(); i++) {
             ShapeAppIcon icon = appIcons.get(i);
             // Set app icon.
             ImageView iconView = mContentView.findViewById(mShapeAppIconIds[i]);
             iconView.setBackground(icon.getDrawableCopy());
             // Set app name.
             TextView appName = mContentView.findViewById(mShapeIconAppNameIds[i]);
             appName.setText(icon.getAppName());
         }
     }

     private void setColorAndIconsSection(List<Drawable> icons, Drawable shapeDrawable,
                                          int accentColor) {
         // Set QS icons and background.
         for (int i = 0; i < mColorTileIconIds.length && i < icons.size(); i++) {
             Drawable icon = icons.get(mColorTileIconIds[i][1]).getConstantState()
                     .newDrawable().mutate();
             Drawable bgShape = shapeDrawable.getConstantState().newDrawable();
             bgShape.setTint(accentColor);

             ImageView bg = mContentView.findViewById(mColorTileIds[i]);
             bg.setImageDrawable(bgShape);
             ImageView fg = mContentView.findViewById(mColorTileIconIds[i][0]);
             fg.setImageDrawable(icon);
         }

         // Set color for Buttons (CheckBox, RadioButton, and Switch).
         ColorStateList tintList = getColorStateList(accentColor);
         for (int mColorButtonId : mColorButtonIds) {
             CompoundButton button = mContentView.findViewById(mColorButtonId);
             button.setButtonTintList(tintList);
             if (button instanceof Switch) {
                 ((Switch) button).setThumbTintList(tintList);
                 ((Switch) button).setTrackTintList(tintList);
             }
         }
     }

     private void setColorAndIconsBoxRadius(int cornerRadius) {
         ((CardView) mContentView.findViewById(R.id.color_icons_section)).setRadius(cornerRadius);
     }

     private void setQsbRadius(int cornerRadius) {
         View qsb = mContentView.findViewById(R.id.theme_qsb);
         if (qsb != null && qsb.getVisibility() == View.VISIBLE) {
             if (qsb.getBackground() instanceof GradientDrawable) {
                 GradientDrawable bg = (GradientDrawable) qsb.getBackground();
                 float radius = useRoundedQSB(cornerRadius)
                         ? (float) qsb.getLayoutParams().height / 2 : cornerRadius;
                 bg.setCornerRadii(new float[]{
                         radius, radius, radius, radius,
                         radius, radius, radius, radius});
             }
         }
     }

     private void updateTime() {
         Calendar calendar = Calendar.getInstance(TimeZone.getDefault());
         if (mStatusBarClock != null) {
             mStatusBarClock.setText(TimeUtils.getFormattedTime(mContext, calendar));
         }
         if (mSmartSpaceDate != null) {
             String datePattern =
                     DateFormat.getBestDateTimePattern(Locale.getDefault(), DATE_FORMAT);
             mSmartSpaceDate.setText(DateFormat.format(datePattern, calendar));
         }
     }

     private boolean useRoundedQSB(int cornerRadius) {
         return cornerRadius >= mContext.getResources().getDimensionPixelSize(
                 R.dimen.roundCornerThreshold);
     }

     private ColorStateList getColorStateList(int accentColor) {
         int controlGreyColor = mContext.getColor(R.color.control_grey);
         return new ColorStateList(
                 new int[][]{
                         new int[]{android.R.attr.state_selected},
                         new int[]{android.R.attr.state_checked},
                         new int[]{-android.R.attr.state_enabled},
                 },
                 new int[] {
                         accentColor,
                         accentColor,
                         controlGreyColor
                 }
         );
     }

     /**
      * Gets the screen height which does not include the system status bar and bottom navigation
      * bar.
      */
     private int getDisplayHeight() {
         final DisplayMetrics dm = mContext.getResources().getDisplayMetrics();
         return dm.heightPixels;
     }

     // The height of top tool bar (R.layout.section_header).
     private int getTopToolBarHeight() {
         final TypedValue typedValue = new TypedValue();
         return mContext.getTheme().resolveAttribute(
                 android.R.attr.actionBarSize, typedValue, true)
                 ? TypedValue.complexToDimensionPixelSize(
                         typedValue.data, mContext.getResources().getDisplayMetrics())
                 : 0;
     }

     private int getFullPreviewCardHeight() {
         final Resources res = mContext.getResources();
         return getDisplayHeight()
                 - getTopToolBarHeight()
                 - res.getDimensionPixelSize(R.dimen.bottom_navbar_height)
                 - res.getDimensionPixelSize(R.dimen.full_preview_page_default_padding_top)
                 - res.getDimensionPixelSize(R.dimen.full_preview_page_default_padding_bottom);
     }
 }
	/*
	* 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.customization.picker.theme;

	import static android.view.View.MeasureSpec.EXACTLY;
	import static android.view.View.MeasureSpec.makeMeasureSpec;

	import android.app.WallpaperColors;
	import android.content.Context;
	import android.content.res.ColorStateList;
	import android.content.res.Configuration;
	import android.content.res.Resources;
	import android.graphics.Typeface;
	import android.graphics.drawable.Drawable;
	import android.graphics.drawable.GradientDrawable;
	import android.text.format.DateFormat;
	import android.util.DisplayMetrics;
	import android.util.TypedValue;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.animation.AnimationUtils;
	import android.widget.CompoundButton;
	import android.widget.ImageView;
	import android.widget.Switch;
	import android.widget.TextView;

	import androidx.annotation.MainThread;
	import androidx.annotation.Nullable;
	import androidx.cardview.widget.CardView;
	import androidx.lifecycle.Lifecycle;
	import androidx.lifecycle.LifecycleObserver;
	import androidx.lifecycle.OnLifecycleEvent;

	import com.android.customization.model.theme.ThemeBundle;
	import com.android.customization.model.theme.ThemeBundle.PreviewInfo;
	import com.android.customization.model.theme.ThemeBundle.PreviewInfo.ShapeAppIcon;
	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.List;
	import java.util.Locale;
	import java.util.TimeZone;

	/** A class to load the {@link ThemeBundle} preview to the view. */
	class ThemeOptionPreviewer implements LifecycleObserver {
	private static final String DATE_FORMAT = "EEEE, MMM d";

	// Maps which icon from ResourceConstants#ICONS_FOR_PREVIEW.
	private static final int ICON_WIFI = 0;
	private static final int ICON_BLUETOOTH = 1;
	private static final int ICON_FLASHLIGHT = 3;
	private static final int ICON_AUTO_ROTATE = 4;
	private static final int ICON_CELLULAR_SIGNAL = 6;
	private static final int ICON_BATTERY = 7;

	// Icons in the top bar (fake "status bar") with the particular order.
	private static final int [] sTopBarIconToPreviewIcon = new int [] {
	ICON_WIFI, ICON_CELLULAR_SIGNAL, ICON_BATTERY };

	// Ids of app icon shape preview.
	private int[] mShapeAppIconIds = {
	R.id.shape_preview_icon_0, R.id.shape_preview_icon_1,
	R.id.shape_preview_icon_2, R.id.shape_preview_icon_3
	};
	private int[] mShapeIconAppNameIds = {
	R.id.shape_preview_icon_app_name_0, R.id.shape_preview_icon_app_name_1,
	R.id.shape_preview_icon_app_name_2, R.id.shape_preview_icon_app_name_3
	};

	// Ids of color/icons section.
	private int[][] mColorTileIconIds = {
	new int[] { R.id.preview_color_qs_0_icon, ICON_WIFI},
	new int[] { R.id.preview_color_qs_1_icon, ICON_BLUETOOTH},
	new int[] { R.id.preview_color_qs_2_icon, ICON_FLASHLIGHT},
	new int[] { R.id.preview_color_qs_3_icon, ICON_AUTO_ROTATE},
	};
	private int[] mColorTileIds = {
	R.id.preview_color_qs_0_bg, R.id.preview_color_qs_1_bg,
	R.id.preview_color_qs_2_bg, R.id.preview_color_qs_3_bg
	};
	private int[] mColorButtonIds = {
	R.id.preview_check_selected, R.id.preview_radio_selected, R.id.preview_toggle_selected
	};

	private final Context mContext;

	private View mContentView;
	private TextView mStatusBarClock;
	private TextView mSmartSpaceDate;
	private TimeTicker mTicker;

	private boolean mHasPreviewInfoSet;
	private boolean mHasWallpaperColorSet;

	ThemeOptionPreviewer(Lifecycle lifecycle, Context context, ViewGroup previewContainer) {
	lifecycle.addObserver(this);

	mContext = context;
	mContentView = LayoutInflater.from(context).inflate(
	R.layout.theme_preview_content, /* root= */ null);
	mContentView.setVisibility(View.INVISIBLE);
	mStatusBarClock = mContentView.findViewById(R.id.theme_preview_clock);
	mSmartSpaceDate = mContentView.findViewById(R.id.smart_space_date);
	updateTime();
	final float screenAspectRatio =
	ScreenSizeCalculator.getInstance().getScreenAspectRatio(mContext);
	Configuration config = mContext.getResources().getConfiguration();
	final boolean directionLTR = config.getLayoutDirection() == View.LAYOUT_DIRECTION_LTR;
	previewContainer.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) {
	// Calculate the full preview card height and width.
	final int fullPreviewCardHeight = getFullPreviewCardHeight();
	final int fullPreviewCardWidth = (int) (fullPreviewCardHeight / screenAspectRatio);

	// Relayout the content view to match full preview card size.
	mContentView.measure(
	makeMeasureSpec(fullPreviewCardWidth, EXACTLY),
	makeMeasureSpec(fullPreviewCardHeight, EXACTLY));
	mContentView.layout(0, 0, fullPreviewCardWidth, fullPreviewCardHeight);

	// Scale the content view from full preview size to the container size. For full
	// preview, the scale value is 1.
	float scale = (float) previewContainer.getMeasuredHeight() / fullPreviewCardHeight;
	mContentView.setScaleX(scale);
	mContentView.setScaleY(scale);
	// The pivot point is centered by default, set to (0, 0).
	mContentView.setPivotX(directionLTR ? 0f : mContentView.getMeasuredWidth());
	mContentView.setPivotY(0f);

	// Ensure there will be only one content view in the container.
	previewContainer.removeAllViews();
	// Finally, add the content view to the container.
	previewContainer.addView(
	mContentView,
	mContentView.getMeasuredWidth(),
	mContentView.getMeasuredHeight());

	previewContainer.removeOnLayoutChangeListener(this);
	}
	});
	}

	/** Loads the Theme option preview into the container view. */
	public void setPreviewInfo(PreviewInfo previewInfo) {
	setHeadlineFont(previewInfo.headlineFontFamily);
	setBodyFont(previewInfo.bodyFontFamily);
	setTopBarIcons(previewInfo.icons);
	setAppIconShape(previewInfo.shapeAppIcons);
	setColorAndIconsSection(previewInfo.icons, previewInfo.shapeDrawable,
	previewInfo.resolveAccentColor(mContext.getResources()));
	setColorAndIconsBoxRadius(previewInfo.bottomSheeetCornerRadius);
	setQsbRadius(previewInfo.bottomSheeetCornerRadius);
	mHasPreviewInfoSet = true;
	showPreviewIfHasAllConfigSet();
	}

	/**
	* Updates the color of widgets in launcher (like top status bar, smart space, and app name
	* text) which will change its content color according to different wallpapers.
	*
	* @param colors the {@link WallpaperColors} of the wallpaper, or {@code null} to use light
	* color as default
	*/
	public void updateColorForLauncherWidgets(@Nullable WallpaperColors colors) {
	boolean useLightTextColor = colors == null
	\|\| (colors.getColorHints() & WallpaperColors.HINT_SUPPORTS_DARK_TEXT) == 0;
	int textColor = mContext.getColor(useLightTextColor
	? R.color.text_color_light
	: R.color.text_color_dark);
	int textShadowColor = mContext.getColor(useLightTextColor
	? R.color.smartspace_preview_shadow_color_dark
	: R.color.smartspace_preview_shadow_color_transparent);
	// Update the top status bar clock text color.
	mStatusBarClock.setTextColor(textColor);
	// Update the top status bar icon color.
	ViewGroup iconsContainer = mContentView.findViewById(R.id.theme_preview_top_bar_icons);
	for (int i = 0; i < iconsContainer.getChildCount(); i++) {
	((ImageView) iconsContainer.getChildAt(i))
	.setImageTintList(ColorStateList.valueOf(textColor));
	}
	// Update smart space date color.
	mSmartSpaceDate.setTextColor(textColor);
	mSmartSpaceDate.setShadowLayer(
	mContext.getResources().getDimension(
	R.dimen.smartspace_preview_key_ambient_shadow_blur),
	/* dx = */ 0,
	/* dy = */ 0,
	textShadowColor);

	// Update shape app icon name text color.
	for (int id : mShapeIconAppNameIds) {
	TextView appName = mContentView.findViewById(id);
	appName.setTextColor(textColor);
	appName.setShadowLayer(
	mContext.getResources().getDimension(
	R.dimen.preview_theme_app_name_key_ambient_shadow_blur),
	/* dx = */ 0,
	/* dy = */ 0,
	textShadowColor);
	}

	mHasWallpaperColorSet = true;
	showPreviewIfHasAllConfigSet();
	}

	@OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
	@MainThread
	public void onResume() {
	mTicker = TimeTicker.registerNewReceiver(mContext, this::updateTime);
	updateTime();
	}

	@OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
	@MainThread
	public void onPause() {
	if (mContext != null) {
	mContext.unregisterReceiver(mTicker);
	}
	}

	private void showPreviewIfHasAllConfigSet() {
	if (mHasPreviewInfoSet && mHasWallpaperColorSet
	&& mContentView.getVisibility() != View.VISIBLE) {
	mContentView.setAlpha(0f);
	mContentView.setVisibility(View.VISIBLE);
	mContentView.animate().alpha(1f)
	.setStartDelay(50)
	.setDuration(200)
	.setInterpolator(AnimationUtils.loadInterpolator(mContext,
	android.R.interpolator.fast_out_linear_in))
	.start();
	}
	}

	private void setHeadlineFont(Typeface headlineFont) {
	mStatusBarClock.setTypeface(headlineFont);
	mSmartSpaceDate.setTypeface(headlineFont);

	// Update font of color/icons section title.
	TextView colorIconsSectionTitle = mContentView.findViewById(R.id.color_icons_section_title);
	colorIconsSectionTitle.setTypeface(headlineFont);
	}

	private void setBodyFont(Typeface bodyFont) {
	// Update font of app names.
	for (int id : mShapeIconAppNameIds) {
	TextView appName = mContentView.findViewById(id);
	appName.setTypeface(bodyFont);
	}
	}

	private void setTopBarIcons(List<Drawable> icons) {
	ViewGroup iconsContainer = mContentView.findViewById(R.id.theme_preview_top_bar_icons);
	for (int i = 0; i < iconsContainer.getChildCount(); i++) {
	int iconIndex = sTopBarIconToPreviewIcon[i];
	if (iconIndex < icons.size()) {
	((ImageView) iconsContainer.getChildAt(i))
	.setImageDrawable(icons.get(iconIndex).getConstantState()
	.newDrawable().mutate());
	} else {
	iconsContainer.getChildAt(i).setVisibility(View.GONE);
	}
	}
	}

	private void setAppIconShape(List<ShapeAppIcon> appIcons) {
	for (int i = 0; i < mShapeAppIconIds.length && i < mShapeIconAppNameIds.length
	&& i < appIcons.size(); i++) {
	ShapeAppIcon icon = appIcons.get(i);
	// Set app icon.
	ImageView iconView = mContentView.findViewById(mShapeAppIconIds[i]);
	iconView.setBackground(icon.getDrawableCopy());
	// Set app name.
	TextView appName = mContentView.findViewById(mShapeIconAppNameIds[i]);
	appName.setText(icon.getAppName());
	}
	}

	private void setColorAndIconsSection(List<Drawable> icons, Drawable shapeDrawable,
	int accentColor) {
	// Set QS icons and background.
	for (int i = 0; i < mColorTileIconIds.length && i < icons.size(); i++) {
	Drawable icon = icons.get(mColorTileIconIds[i][1]).getConstantState()
	.newDrawable().mutate();
	Drawable bgShape = shapeDrawable.getConstantState().newDrawable();
	bgShape.setTint(accentColor);

	ImageView bg = mContentView.findViewById(mColorTileIds[i]);
	bg.setImageDrawable(bgShape);
	ImageView fg = mContentView.findViewById(mColorTileIconIds[i][0]);
	fg.setImageDrawable(icon);
	}

	// Set color for Buttons (CheckBox, RadioButton, and Switch).
	ColorStateList tintList = getColorStateList(accentColor);
	for (int mColorButtonId : mColorButtonIds) {
	CompoundButton button = mContentView.findViewById(mColorButtonId);
	button.setButtonTintList(tintList);
	if (button instanceof Switch) {
	((Switch) button).setThumbTintList(tintList);
	((Switch) button).setTrackTintList(tintList);
	}
	}
	}

	private void setColorAndIconsBoxRadius(int cornerRadius) {
	((CardView) mContentView.findViewById(R.id.color_icons_section)).setRadius(cornerRadius);
	}

	private void setQsbRadius(int cornerRadius) {
	View qsb = mContentView.findViewById(R.id.theme_qsb);
	if (qsb != null && qsb.getVisibility() == View.VISIBLE) {
	if (qsb.getBackground() instanceof GradientDrawable) {
	GradientDrawable bg = (GradientDrawable) qsb.getBackground();
	float radius = useRoundedQSB(cornerRadius)
	? (float) qsb.getLayoutParams().height / 2 : cornerRadius;
	bg.setCornerRadii(new float[]{
	radius, radius, radius, radius,
	radius, radius, radius, radius});
	}
	}
	}

	private void updateTime() {
	Calendar calendar = Calendar.getInstance(TimeZone.getDefault());
	if (mStatusBarClock != null) {
	mStatusBarClock.setText(TimeUtils.getFormattedTime(mContext, calendar));
	}
	if (mSmartSpaceDate != null) {
	String datePattern =
	DateFormat.getBestDateTimePattern(Locale.getDefault(), DATE_FORMAT);
	mSmartSpaceDate.setText(DateFormat.format(datePattern, calendar));
	}
	}

	private boolean useRoundedQSB(int cornerRadius) {
	return cornerRadius >= mContext.getResources().getDimensionPixelSize(
	R.dimen.roundCornerThreshold);
	}

	private ColorStateList getColorStateList(int accentColor) {
	int controlGreyColor = mContext.getColor(R.color.control_grey);
	return new ColorStateList(
	new int[][]{
	new int[]{android.R.attr.state_selected},
	new int[]{android.R.attr.state_checked},
	new int[]{-android.R.attr.state_enabled},
	},
	new int[] {
	accentColor,
	accentColor,
	controlGreyColor
	}
	);
	}

	/**
	* Gets the screen height which does not include the system status bar and bottom navigation
	* bar.
	*/
	private int getDisplayHeight() {
	final DisplayMetrics dm = mContext.getResources().getDisplayMetrics();
	return dm.heightPixels;
	}

	// The height of top tool bar (R.layout.section_header).
	private int getTopToolBarHeight() {
	final TypedValue typedValue = new TypedValue();
	return mContext.getTheme().resolveAttribute(
	android.R.attr.actionBarSize, typedValue, true)
	? TypedValue.complexToDimensionPixelSize(
	typedValue.data, mContext.getResources().getDisplayMetrics())
	: 0;
	}

	private int getFullPreviewCardHeight() {
	final Resources res = mContext.getResources();
	return getDisplayHeight()
	- getTopToolBarHeight()
	- res.getDimensionPixelSize(R.dimen.bottom_navbar_height)
	- res.getDimensionPixelSize(R.dimen.full_preview_page_default_padding_top)
	- res.getDimensionPixelSize(R.dimen.full_preview_page_default_padding_bottom);
	}
	}