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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.launcher3.graphics;
import static com.android.launcher3.LauncherSettings.Favorites.TABLE_NAME;
import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
import android.app.WallpaperColors;
import android.appwidget.AppWidgetProviderInfo;
import android.content.Context;
import android.database.Cursor;
import android.hardware.display.DisplayManager;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.util.Size;
import android.util.SparseArray;
import android.view.ContextThemeWrapper;
import android.view.Display;
import android.view.SurfaceControlViewHost;
import android.view.SurfaceControlViewHost.SurfacePackage;
import android.view.View;
import android.view.WindowManager.LayoutParams;
import android.view.animation.AccelerateDecelerateInterpolator;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.UiThread;
import androidx.annotation.WorkerThread;
import com.android.launcher3.DeviceProfile;
import com.android.launcher3.InvariantDeviceProfile;
import com.android.launcher3.LauncherAppState;
import com.android.launcher3.LauncherSettings;
import com.android.launcher3.Utilities;
import com.android.launcher3.Workspace;
import com.android.launcher3.graphics.LauncherPreviewRenderer.PreviewContext;
import com.android.launcher3.model.BgDataModel;
import com.android.launcher3.model.GridSizeMigrationUtil;
import com.android.launcher3.model.LoaderTask;
import com.android.launcher3.model.ModelDbController;
import com.android.launcher3.provider.LauncherDbUtils;
import com.android.launcher3.util.ComponentKey;
import com.android.launcher3.util.RunnableList;
import com.android.launcher3.util.Themes;
import com.android.launcher3.widget.LocalColorExtractor;
import java.util.ArrayList;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/** Render preview using surface view. */
@SuppressWarnings("NewApi")
public class PreviewSurfaceRenderer {
private static final String TAG = "PreviewSurfaceRenderer";
private static final int FADE_IN_ANIMATION_DURATION = 200;
private static final String KEY_HOST_TOKEN = "host_token";
private static final String KEY_VIEW_WIDTH = "width";
private static final String KEY_VIEW_HEIGHT = "height";
private static final String KEY_DISPLAY_ID = "display_id";
private static final String KEY_COLORS = "wallpaper_colors";
private final Context mContext;
private final InvariantDeviceProfile mIdp;
private final IBinder mHostToken;
private final int mWidth;
private final int mHeight;
private final Display mDisplay;
private final WallpaperColors mWallpaperColors;
private final RunnableList mOnDestroyCallbacks = new RunnableList();
private final SurfaceControlViewHost mSurfaceControlViewHost;
private boolean mDestroyed = false;
private LauncherPreviewRenderer mRenderer;
private boolean mHideQsb;
public PreviewSurfaceRenderer(Context context, Bundle bundle) throws Exception {
mContext = context;
String gridName = bundle.getString("name");
bundle.remove("name");
if (gridName == null) {
gridName = InvariantDeviceProfile.getCurrentGridName(context);
}
mWallpaperColors = bundle.getParcelable(KEY_COLORS);
mHideQsb = bundle.getBoolean(GridCustomizationsProvider.KEY_HIDE_BOTTOM_ROW);
mIdp = new InvariantDeviceProfile(context, gridName);
mHostToken = bundle.getBinder(KEY_HOST_TOKEN);
mWidth = bundle.getInt(KEY_VIEW_WIDTH);
mHeight = bundle.getInt(KEY_VIEW_HEIGHT);
mDisplay = context.getSystemService(DisplayManager.class)
.getDisplay(bundle.getInt(KEY_DISPLAY_ID));
mSurfaceControlViewHost = MAIN_EXECUTOR
.submit(() -> new SurfaceControlViewHost(mContext, mDisplay, mHostToken))
.get(5, TimeUnit.SECONDS);
mOnDestroyCallbacks.add(mSurfaceControlViewHost::release);
}
public IBinder getHostToken() {
return mHostToken;
}
public SurfacePackage getSurfacePackage() {
return mSurfaceControlViewHost.getSurfacePackage();
}
/**
* Destroys the preview and all associated data
*/
@UiThread
public void destroy() {
mDestroyed = true;
mOnDestroyCallbacks.executeAllAndDestroy();
}
/**
* A function that queries for the launcher app widget span info
*
* @param context The context to get the content resolver from, should be related to launcher
* @return A SparseArray with the app widget id being the key and the span info being the values
*/
@WorkerThread
@Nullable
public SparseArray<Size> getLoadedLauncherWidgetInfo(
@NonNull final Context context) {
final SparseArray<Size> widgetInfo = new SparseArray<>();
final String query = LauncherSettings.Favorites.ITEM_TYPE + " = "
+ LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET;
ModelDbController mainController =
LauncherAppState.getInstance(mContext).getModel().getModelDbController();
try (Cursor c = mainController.query(TABLE_NAME,
new String[] {
LauncherSettings.Favorites.APPWIDGET_ID,
LauncherSettings.Favorites.SPANX,
LauncherSettings.Favorites.SPANY
}, query, null, null)) {
final int appWidgetIdIndex = c.getColumnIndexOrThrow(
LauncherSettings.Favorites.APPWIDGET_ID);
final int spanXIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SPANX);
final int spanYIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SPANY);
while (c.moveToNext()) {
final int appWidgetId = c.getInt(appWidgetIdIndex);
final int spanX = c.getInt(spanXIndex);
final int spanY = c.getInt(spanYIndex);
widgetInfo.append(appWidgetId, new Size(spanX, spanY));
}
} catch (Exception e) {
Log.e(TAG, "Error querying for launcher widget info", e);
return null;
}
return widgetInfo;
}
/**
* Generates the preview in background
*/
public void loadAsync() {
MODEL_EXECUTOR.execute(this::loadModelData);
}
/**
* Hides the components in the bottom row.
*
* @param hide True to hide and false to show.
*/
public void hideBottomRow(boolean hide) {
if (mRenderer != null) {
mRenderer.hideBottomRow(hide);
}
}
@WorkerThread
private void loadModelData() {
final Context inflationContext;
if (mWallpaperColors != null) {
// Create a themed context, without affecting the main application context
Context context = mContext.createDisplayContext(mDisplay);
if (Utilities.ATLEAST_R) {
context = context.createWindowContext(
LayoutParams.TYPE_APPLICATION_OVERLAY, null);
}
LocalColorExtractor.newInstance(mContext)
.applyColorsOverride(context, mWallpaperColors);
inflationContext = new ContextThemeWrapper(context,
Themes.getActivityThemeRes(context, mWallpaperColors.getColorHints()));
} else {
inflationContext = new ContextThemeWrapper(mContext,
Themes.getActivityThemeRes(mContext));
}
if (GridSizeMigrationUtil.needsToMigrate(inflationContext, mIdp)) {
// Start the migration
PreviewContext previewContext = new PreviewContext(inflationContext, mIdp);
// Copy existing data to preview DB
LauncherDbUtils.copyTable(LauncherAppState.getInstance(mContext)
.getModel().getModelDbController().getDb(),
TABLE_NAME,
LauncherAppState.getInstance(previewContext)
.getModel().getModelDbController().getDb(),
TABLE_NAME,
mContext);
LauncherAppState.getInstance(previewContext)
.getModel().getModelDbController().clearEmptyDbFlag();
new LoaderTask(
LauncherAppState.getInstance(previewContext),
/* bgAllAppsList= */ null,
new BgDataModel(),
LauncherAppState.getInstance(previewContext).getModel().getModelDelegate(),
/* results= */ null) {
@Override
public void run() {
DeviceProfile deviceProfile = mIdp.getDeviceProfile(previewContext);
String query =
LauncherSettings.Favorites.SCREEN + " = " + Workspace.FIRST_SCREEN_ID
+ " or " + LauncherSettings.Favorites.CONTAINER + " = "
+ LauncherSettings.Favorites.CONTAINER_HOTSEAT;
if (deviceProfile.isTwoPanels) {
query += " or " + LauncherSettings.Favorites.SCREEN + " = "
+ Workspace.SECOND_SCREEN_ID;
}
loadWorkspace(new ArrayList<>(), query, null);
final SparseArray<Size> spanInfo =
getLoadedLauncherWidgetInfo(previewContext.getBaseContext());
MAIN_EXECUTOR.execute(() -> {
renderView(previewContext, mBgDataModel, mWidgetProvidersMap, spanInfo);
mOnDestroyCallbacks.add(previewContext::onDestroy);
});
}
}.run();
} else {
LauncherAppState.getInstance(inflationContext).getModel().loadAsync(dataModel -> {
if (dataModel != null) {
MAIN_EXECUTOR.execute(() -> renderView(inflationContext, dataModel, null,
null));
} else {
Log.e(TAG, "Model loading failed");
}
});
}
}
@UiThread
private void renderView(Context inflationContext, BgDataModel dataModel,
Map<ComponentKey, AppWidgetProviderInfo> widgetProviderInfoMap,
@Nullable final SparseArray<Size> launcherWidgetSpanInfo) {
if (mDestroyed) {
return;
}
mRenderer = new LauncherPreviewRenderer(inflationContext, mIdp,
mWallpaperColors, launcherWidgetSpanInfo);
mRenderer.hideBottomRow(mHideQsb);
View view = mRenderer.getRenderedView(dataModel, widgetProviderInfoMap);
// This aspect scales the view to fit in the surface and centers it
final float scale = Math.min(mWidth / (float) view.getMeasuredWidth(),
mHeight / (float) view.getMeasuredHeight());
view.setScaleX(scale);
view.setScaleY(scale);
view.setPivotX(0);
view.setPivotY(0);
view.setTranslationX((mWidth - scale * view.getWidth()) / 2);
view.setTranslationY((mHeight - scale * view.getHeight()) / 2);
view.setAlpha(0);
view.animate().alpha(1)
.setInterpolator(new AccelerateDecelerateInterpolator())
.setDuration(FADE_IN_ANIMATION_DURATION)
.start();
mSurfaceControlViewHost.setView(view, view.getMeasuredWidth(), view.getMeasuredHeight());
}
}