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Commit eff44f33 authored by Sunny Goyal's avatar Sunny Goyal
Browse files

Adding content provider for exposing launcher grid settings 

Bug: 122262084
Change-Id: I3e89e0a9400fb3e81f932af3606eb49c36d34894
parent 238f324e

AndroidManifest-common.xml

+9 −0
Original line number Diff line number Diff line
@@ -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

        -->

src/com/android/launcher3/InvariantDeviceProfile.java

+14 −6
Original line number Diff line number Diff line
@@ -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);

src/com/android/launcher3/graphics/GridOptionsProvider.java

0 → 100644
+157 −0
Original line number Diff line number Diff line 
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());

        }

    }

}

src/com/android/launcher3/graphics/LauncherPreviewRenderer.java

+4 −2
Original line number Diff line number Diff line
@@ -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()) {