openkylin
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platform_packages_apps_Launcher3
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Adding content provider for exposing launcher grid settings 

Bug: 122262084
Change-Id: I3e89e0a9400fb3e81f932af3606eb49c36d34894
This commit is contained in:
Sunny Goyal 2019-01-09 17:29:49 -08:00
parent 238f324ebf
commit eff44f331c
4 changed files with 184 additions and 8 deletions
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9
AndroidManifest-common.xml
View File

@ -152,6 +152,15 @@
android:writePermission="${packageName}.permission.WRITE_SETTINGS"
android:readPermission="${packageName}.permission.READ_SETTINGS" />
<!--
The content provider for exposing various launcher grid options.
TODO: Add proper permissions
-->
<provider
android:name="com.android.launcher3.graphics.GridOptionsProvider"
android:authorities="${packageName}.grid_control"
android:exported="true" />
<!--
The settings activity. To extend point settings_fragment_name to appropriate fragment class
-->

20
src/com/android/launcher3/InvariantDeviceProfile.java
View File

@ -139,6 +139,13 @@ public class InvariantDeviceProfile {
APPLY_CONFIG_AT_RUNTIME.get() ? this::onConfigChanged : this::killProcess);
}
public InvariantDeviceProfile(Context context, String gridName) {
String newName = initGrid(context, gridName);
if (newName == null || !newName.equals(gridName)) {
throw new IllegalArgumentException("Unknown grid name");
}
}
/**
* Retrieve system defined or RRO overriden icon shape.
*/
@ -150,7 +157,7 @@ public class InvariantDeviceProfile {
return context.getResources().getString(CONFIG_ICON_MASK_RES_ID);
}
private void initGrid(Context context, String gridName) {
private String initGrid(Context context, String gridName) {
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
DisplayMetrics dm = new DisplayMetrics();
@ -218,6 +225,7 @@ public class InvariantDeviceProfile {
} else {
defaultWallpaperSize = new Point(Math.max(smallSide * 2, largeSide), largeSide);
}
return closestProfile.name;
}
@Nullable
@ -441,11 +449,11 @@ public class InvariantDeviceProfile {
}
private static final class GridOption {
public static final class GridOption {
private final String name;
private final int numRows;
private final int numColumns;
public final String name;
public final int numRows;
public final int numColumns;
private final int numFolderRows;
private final int numFolderColumns;
@ -457,7 +465,7 @@ public class InvariantDeviceProfile {
private final SparseArray<TypedValue> extraAttrs;
GridOption(Context context, AttributeSet attrs) {
public GridOption(Context context, AttributeSet attrs) {
TypedArray a = context.obtainStyledAttributes(
attrs, R.styleable.GridDisplayOption);
name = a.getString(R.styleable.GridDisplayOption_name);

157
src/com/android/launcher3/graphics/GridOptionsProvider.java Normal file
View File

@ -0,0 +1,157 @@
package com.android.launcher3.graphics;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.res.XmlResourceParser;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.os.ParcelFileDescriptor.AutoCloseOutputStream;
import android.text.TextUtils;
import android.util.Log;
import android.util.Xml;
import com.android.launcher3.InvariantDeviceProfile;
import com.android.launcher3.InvariantDeviceProfile.GridOption;
import com.android.launcher3.R;
import com.android.launcher3.util.LooperExecutor;
import com.android.launcher3.util.UiThreadHelper;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.Future;
/**
* Exposes various launcher grid options and allows the caller to change them.
* APIs:
* /list_options: List the various available grip options, has following columns
* name: name of the grid
* rows: number of rows in the grid
* cols: number of columns in the grid
* preview_count: number of previews available for this grid option. The preview uri
* looks like /preview/<grid-name>/<preview index starting with 0>
* is_default: true if this grid is currently active
*
* /preview: Opens a file stream for the grid preview
*/
public class GridOptionsProvider extends ContentProvider {
private static final String TAG = "GridOptionsProvider";
private static final String KEY_NAME = "name";
private static final String KEY_ROWS = "rows";
private static final String KEY_COLS = "cols";
private static final String KEY_PREVIEW_COUNT = "preview_count";
private static final String KEY_IS_DEFAULT = "is_default";
private static final String KEY_PREVIEW = "preview";
private static final String MIME_TYPE_PNG = "image/png";
public static final PipeDataWriter<Future<Bitmap>> BITMAP_WRITER =
new PipeDataWriter<Future<Bitmap>>() {
@Override
public void writeDataToPipe(ParcelFileDescriptor output, Uri uri, String s,
Bundle bundle, Future<Bitmap> bitmap) {
try (AutoCloseOutputStream os = new AutoCloseOutputStream(output)) {
bitmap.get().compress(Bitmap.CompressFormat.PNG, 100, os);
} catch (Exception e) {
Log.w(TAG, "fail to write to pipe", e);
}
}
};
@Override
public boolean onCreate() {
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
// TODO: Validate the query uri
MatrixCursor cursor = new MatrixCursor(new String[] {
KEY_NAME, KEY_ROWS, KEY_COLS, KEY_PREVIEW_COUNT, KEY_IS_DEFAULT});
InvariantDeviceProfile idp = InvariantDeviceProfile.INSTANCE.get(getContext());
try (XmlResourceParser parser = getContext().getResources().getXml(R.xml.device_profiles)) {
final int depth = parser.getDepth();
int type;
while (((type = parser.next()) != XmlPullParser.END_TAG ||
parser.getDepth() > depth) && type != XmlPullParser.END_DOCUMENT) {
if ((type == XmlPullParser.START_TAG) && "grid-option".equals(parser.getName())) {
GridOption gridOption = new GridOption(
getContext(), Xml.asAttributeSet(parser));
cursor.newRow()
.add(KEY_NAME, gridOption.name)
.add(KEY_ROWS, gridOption.numRows)
.add(KEY_COLS, gridOption.numColumns)
.add(KEY_PREVIEW_COUNT, 1)
.add(KEY_IS_DEFAULT, idp.numColumns == gridOption.numColumns
&& idp.numRows == gridOption.numRows);
}
}
} catch (IOException | XmlPullParserException e) {
Log.e(TAG, "Error parsing device profile", e);
}
return cursor;
}
@Override
public String getType(Uri uri) {
List<String> segments = uri.getPathSegments();
if (segments.size() > 0 && KEY_PREVIEW.equals(segments.get(0))) {
return MIME_TYPE_PNG;
}
return "vnd.android.cursor.dir/launcher_grid";
}
@Override
public Uri insert(Uri uri, ContentValues initialValues) {
return null;
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
return 0;
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
return 0;
}
@Override
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
List<String> segments = uri.getPathSegments();
if (segments.size() < 2 || !KEY_PREVIEW.equals(segments.get(0))) {
throw new FileNotFoundException("Invalid preview url");
}
String profileName = segments.get(1);
if (TextUtils.isEmpty(profileName)) {
throw new FileNotFoundException("Invalid preview url");
}
InvariantDeviceProfile idp;
try {
idp = new InvariantDeviceProfile(getContext(), profileName);
} catch (Exception e) {
throw new FileNotFoundException(e.getMessage());
}
LooperExecutor executor = new LooperExecutor(UiThreadHelper.getBackgroundLooper());
try {
return openPipeHelper(uri, MIME_TYPE_PNG, null,
executor.submit(new LauncherPreviewRenderer(getContext(), idp)), BITMAP_WRITER);
} catch (Exception e) {
throw new FileNotFoundException(e.getMessage());
}
}
}

6
src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
View File

@ -61,6 +61,7 @@ import com.android.launcher3.icons.BitmapRenderer;
import com.android.launcher3.views.ActivityContext;
import com.android.launcher3.views.BaseDragLayer;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
/**
@ -72,7 +73,7 @@ import java.util.concurrent.CountDownLatch;
* 4) Measure and draw the view on a canvas
*/
@TargetApi(Build.VERSION_CODES.O)
public class LauncherPreviewRenderer {
public class LauncherPreviewRenderer implements Callable<Bitmap> {
private static final String TAG = "LauncherPreviewRenderer";
@ -110,7 +111,8 @@ public class LauncherPreviewRenderer {
context.getString(R.string.label_application);
}
public Bitmap createScreenShot() {
@Override
public Bitmap call() {
return BitmapRenderer.createHardwareBitmap(mDp.widthPx, mDp.heightPx, c -> {
if (Looper.myLooper() == Looper.getMainLooper()) {