Sharesheet - image preview support (0ea391bc) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/app/ChooserActivity.java

+172 −6

Original line number	Diff line number	Diff line
		@@ -16,6 +16,9 @@

		package com.android.internal.app;

		import static java.lang.annotation.RetentionPolicy.SOURCE;

		import android.annotation.IntDef;
		import android.app.Activity;
		import android.app.ActivityManager;
		import android.app.prediction.AppPredictionContext;
		@@ -27,6 +30,7 @@ import android.app.prediction.AppTargetId;
		import android.content.ClipData;
		import android.content.ClipboardManager;
		import android.content.ComponentName;
		import android.content.ContentResolver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		@@ -46,6 +50,7 @@ import android.database.DataSetObserver;
		import android.graphics.Bitmap;
		import android.graphics.Canvas;
		import android.graphics.Color;
		import android.graphics.Paint;
		import android.graphics.Path;
		import android.graphics.drawable.Drawable;
		import android.graphics.drawable.Icon;
		@@ -93,11 +98,13 @@ import com.android.internal.R;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.logging.MetricsLogger;
		import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
		import com.android.internal.util.ImageUtils;

		import com.google.android.collect.Lists;

		import java.io.File;
		import java.io.IOException;
		import java.lang.annotation.Retention;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.Collections;
		@@ -174,6 +181,15 @@ public class ChooserActivity extends ResolverActivity {
		private static final int SHORTCUT_MANAGER_SHARE_TARGET_RESULT = 3;
		private static final int SHORTCUT_MANAGER_SHARE_TARGET_RESULT_COMPLETED = 4;

		@Retention(SOURCE)
		@IntDef({CONTENT_PREVIEW_FILE, CONTENT_PREVIEW_IMAGE, CONTENT_PREVIEW_TEXT})
		private @interface ContentPreviewType {
		}

		private static final int CONTENT_PREVIEW_IMAGE = 0;
		private static final int CONTENT_PREVIEW_FILE = 1;
		private static final int CONTENT_PREVIEW_TEXT = 2;

		private final Handler mChooserHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
		@@ -448,18 +464,35 @@ public class ChooserActivity extends ResolverActivity {
		return;
		}

		ViewGroup contentPreviewLayout = findViewById(R.id.content_preview);
		String action = targetIntent.getAction();
		if (!(Intent.ACTION_SEND.equals(action) \|\| Intent.ACTION_SEND_MULTIPLE.equals(action))) {
		contentPreviewLayout.setVisibility(View.GONE);
		return;
		}

		showDefaultContentPreview(contentPreviewLayout, targetIntent);
		int previewType = findPreferredContentPreview(targetIntent, getContentResolver());
		displayContentPreview(previewType, targetIntent);
		}

		private void displayContentPreview(@ContentPreviewType int previewType, Intent targetIntent) {
		switch (previewType) {
		case CONTENT_PREVIEW_TEXT:
		displayTextContentPreview(targetIntent);
		break;
		case CONTENT_PREVIEW_IMAGE:
		displayImageContentPreview(targetIntent);
		break;
		case CONTENT_PREVIEW_FILE:
		displayFileContentPreview(targetIntent);
		break;
		default:
		Log.e(TAG, "Unexpected content preview type: " + previewType);
		}
		}

		private void showDefaultContentPreview(final ViewGroup parentLayout,
		final Intent targetIntent) {
		private void displayTextContentPreview(Intent targetIntent) {
		ViewGroup contentPreviewLayout = findViewById(R.id.content_preview_text_area);
		contentPreviewLayout.setVisibility(View.VISIBLE);

		CharSequence sharingText = targetIntent.getCharSequenceExtra(Intent.EXTRA_TEXT);
		if (sharingText == null) {
		findViewById(R.id.content_preview_text_layout).setVisibility(View.GONE);
		@@ -498,6 +531,105 @@ public class ChooserActivity extends ResolverActivity {
		}
		}

		private void displayImageContentPreview(Intent targetIntent) {
		ViewGroup contentPreviewLayout = findViewById(R.id.content_preview_image_area);
		contentPreviewLayout.setVisibility(View.VISIBLE);

		String action = targetIntent.getAction();
		if (Intent.ACTION_SEND.equals(action)) {
		Uri uri = targetIntent.getParcelableExtra(Intent.EXTRA_STREAM);
		loadUriIntoView(R.id.content_preview_image_1_large, uri);
		} else {
		ContentResolver resolver = getContentResolver();

		List<Uri> uris = targetIntent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
		List<Uri> imageUris = new ArrayList<>();
		for (Uri uri : uris) {
		if (isImageType(resolver.getType(uri))) {
		imageUris.add(uri);
		}
		}

		if (imageUris.size() == 0) {
		Log.i(TAG, "Attempted to display image preview area with zero"
		+ " available images detected in EXTRA_STREAM list");
		return;
		}

		loadUriIntoView(R.id.content_preview_image_1_large, imageUris.get(0));

		if (imageUris.size() == 2) {
		loadUriIntoView(R.id.content_preview_image_2_large, imageUris.get(1));
		} else if (imageUris.size() > 2) {
		loadUriIntoView(R.id.content_preview_image_2_small, imageUris.get(1));
		RoundedRectImageView imageView = loadUriIntoView(
		R.id.content_preview_image_3_small, imageUris.get(2));

		if (imageUris.size() > 3) {
		imageView.setExtraImageCount(imageUris.size() - 3);
		}
		}
		}
		}

		private void displayFileContentPreview(Intent targetIntent) {
		// support coming
		}

		private RoundedRectImageView loadUriIntoView(int imageResourceId, Uri uri) {
		RoundedRectImageView imageView = findViewById(imageResourceId);
		imageView.setVisibility(View.VISIBLE);
		Bitmap bmp = loadThumbnail(uri, new Size(200, 200));
		imageView.setImageBitmap(bmp);

		return imageView;
		}

		@VisibleForTesting
		protected boolean isImageType(String mimeType) {
		return mimeType != null && mimeType.startsWith("image/");
		}

		@ContentPreviewType
		private int findPreferredContentPreview(Uri uri, ContentResolver resolver) {
		if (uri == null) {
		return CONTENT_PREVIEW_TEXT;
		}

		String mimeType = resolver.getType(uri);
		return isImageType(mimeType) ? CONTENT_PREVIEW_IMAGE : CONTENT_PREVIEW_FILE;
		}

		/**
		* In {@link android.content.Intent#getType}, the app may specify a very general
		* mime-type that broadly covers all data being shared, such as {@literal }/
		* when sending an image and text. We therefore should inspect each item for the
		* the preferred type, in order of IMAGE, FILE, TEXT.
		*/
		@ContentPreviewType
		private int findPreferredContentPreview(Intent targetIntent, ContentResolver resolver) {
		String action = targetIntent.getAction();
		if (Intent.ACTION_SEND.equals(action)) {
		Uri uri = targetIntent.getParcelableExtra(Intent.EXTRA_STREAM);
		return findPreferredContentPreview(uri, resolver);
		} else if (Intent.ACTION_SEND_MULTIPLE.equals(action)) {
		List<Uri> uris = targetIntent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
		if (uris == null \|\| uris.isEmpty()) {
		return CONTENT_PREVIEW_TEXT;
		}

		for (Uri uri : uris) {
		if (findPreferredContentPreview(uri, resolver) == CONTENT_PREVIEW_IMAGE) {
		return CONTENT_PREVIEW_IMAGE;
		}
		}

		return CONTENT_PREVIEW_FILE;
		}

		return CONTENT_PREVIEW_TEXT;
		}

		static SharedPreferences getPinnedSharedPrefs(Context context) {
		// The code below is because in the android:ui process, no one can hear you scream.
		// The package info in the context isn't initialized in the way it is for normal apps,
		@@ -1114,7 +1246,8 @@ public class ChooserActivity extends ResolverActivity {
		}

		try {
		return getContentResolver().loadThumbnail(uri, size, null);
		return ImageUtils.decodeSampledBitmapFromStream(getContentResolver(),
		uri, size.getWidth(), size.getHeight());
		} catch (IOException \| NullPointerException ex) {
		Log.w(TAG, "Error loading preview thumbnail for uri: " + uri.toString(), ex);
		}
		@@ -2045,6 +2178,9 @@ public class ChooserActivity extends ResolverActivity {
		public static class RoundedRectImageView extends ImageView {
		private int mRadius = 0;
		private Path mPath = new Path();
		private Paint mOverlayPaint = new Paint(0);
		private Paint mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
		private String mExtraImageCount = null;

		public RoundedRectImageView(Context context) {
		super(context);
		@@ -2062,6 +2198,14 @@ public class ChooserActivity extends ResolverActivity {
		int defStyleRes) {
		super(context, attrs, defStyleAttr, defStyleRes);
		mRadius = context.getResources().getDimensionPixelSize(R.dimen.chooser_corner_radius);

		mOverlayPaint.setColor(0x99000000);
		mOverlayPaint.setStyle(Paint.Style.FILL);

		mTextPaint.setColor(Color.WHITE);
		mTextPaint.setTextSize(context.getResources()
		.getDimensionPixelSize(R.dimen.chooser_preview_image_font_size));
		mTextPaint.setTextAlign(Paint.Align.CENTER);
		}

		private void updatePath(int width, int height) {
		@@ -2083,12 +2227,24 @@ public class ChooserActivity extends ResolverActivity {
		updatePath(getWidth(), getHeight());
		}

		/**
		* Display an overlay with extra image count on 3rd image
		*/
		public void setExtraImageCount(int count) {
		if (count > 0) {
		this.mExtraImageCount = "+" + count;
		} else {
		this.mExtraImageCount = null;
		}
		}

		@Override
		protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) {
		super.onSizeChanged(width, height, oldWidth, oldHeight);
		updatePath(width, height);
		}


		@Override
		protected void onDraw(Canvas canvas) {
		if (mRadius != 0) {
		@@ -2096,6 +2252,16 @@ public class ChooserActivity extends ResolverActivity {
		}

		super.onDraw(canvas);

		if (mExtraImageCount != null) {
		canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(), mOverlayPaint);

		int xPos = canvas.getWidth() / 2;
		int yPos = (int) ((canvas.getHeight() / 2.0f)
		- ((mTextPaint.descent() + mTextPaint.ascent()) / 2.0f));

		canvas.drawText(mExtraImageCount, xPos, yPos, mTextPaint);
		}
		}
		}
		}

core/java/com/android/internal/util/ImageUtils.java

+58 −1

Original line number	Diff line number	Diff line
		@@ -16,14 +16,20 @@

		package com.android.internal.util;

		import android.content.ContentResolver;
		import android.graphics.Bitmap;
		import android.graphics.Bitmap.Config;
		import android.graphics.BitmapFactory;
		import android.graphics.Canvas;
		import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.PorterDuff;
		import android.graphics.drawable.BitmapDrawable;
		import android.graphics.drawable.Drawable;
		import android.net.Uri;

		import java.io.IOException;
		import java.io.InputStream;

		/**
		* Utility class for image analysis and processing.
		@@ -156,4 +162,55 @@ public class ImageUtils {

		return result;
		}

		/**
		* @see https://developer.android.com/topic/performance/graphics/load-bitmap
		*/
		public static int calculateInSampleSize(BitmapFactory.Options options,
		int reqWidth, int reqHeight) {
		// Raw height and width of image
		final int height = options.outHeight;
		final int width = options.outWidth;
		int inSampleSize = 1;

		if (height > reqHeight \|\| width > reqWidth) {
		final int halfHeight = height / 2;
		final int halfWidth = width / 2;

		// Calculate the largest inSampleSize value that is a power of 2 and keeps both
		// height and width larger than the requested height and width.
		while ((halfHeight / inSampleSize) >= reqHeight
		&& (halfWidth / inSampleSize) >= reqWidth) {
		inSampleSize *= 2;
		}
		}

		return inSampleSize;
		}

		/**
		* Load a bitmap, and attempt to downscale to the required size, to save
		* on memory.
		*
		* @see https://developer.android.com/topic/performance/graphics/load-bitmap
		*/
		public static Bitmap decodeSampledBitmapFromStream(ContentResolver resolver,
		Uri uri, int reqWidth, int reqHeight) throws IOException {

		final BitmapFactory.Options options = new BitmapFactory.Options();
		try (InputStream is = resolver.openInputStream(uri)) {
		// First decode with inJustDecodeBounds=true to check dimensions
		options.inJustDecodeBounds = true;
		BitmapFactory.decodeStream(is, null, options);

		options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
		}

		// need to do this twice as the InputStream is consumed in the first call,
		// and not all InputStreams support marks
		try (InputStream is = resolver.openInputStream(uri)) {
		options.inJustDecodeBounds = false;
		return BitmapFactory.decodeStream(is, null, options);
		}
		}
		}

core/res/res/layout/chooser_grid.xml

+76 −7

Original line number	Diff line number	Diff line
		@@ -59,12 +59,84 @@
		android:layout_centerHorizontal="true"/>
		</RelativeLayout>

		<!-- The following 3 layouts are mutually exclusive. One of them will be
		set VISIBLE programatically, when the optimal preview type can be
		determined by inspecting the data being shared. This path was chosen
		b/c inflating layouts in code had sizing problems with this widget. -->

		<!-- Layout Option 1: Supporting up to 3 images for preview -->
		<LinearLayout
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:orientation="vertical"
		android:background="?attr/colorBackgroundFloating">
		<RelativeLayout
		android:id="@+id/content_preview_image_area"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:layout_gravity="center_horizontal"
		android:paddingBottom="@dimen/chooser_view_spacing"
		android:visibility="gone"
		android:background="?attr/colorBackgroundFloating">

		<view class="com.android.internal.app.ChooserActivity$RoundedRectImageView"
		android:id="@+id/content_preview_image_1_large"
		android:visibility="gone"
		android:layout_width="120dp"
		android:layout_height="140dp"
		android:layout_alignParentTop="true"
		android:adjustViewBounds="true"
		android:gravity="center"
		android:scaleType="centerCrop"/>

		<view class="com.android.internal.app.ChooserActivity$RoundedRectImageView"
		android:id="@+id/content_preview_image_2_large"
		android:visibility="gone"
		android:layout_width="120dp"
		android:layout_height="140dp"
		android:layout_alignParentTop="true"
		android:layout_toRightOf="@id/content_preview_image_1_large"
		android:layout_marginLeft="10dp"
		android:adjustViewBounds="true"
		android:gravity="center"
		android:scaleType="centerCrop"/>

		<view class="com.android.internal.app.ChooserActivity$RoundedRectImageView"
		android:id="@+id/content_preview_image_2_small"
		android:visibility="gone"
		android:layout_width="120dp"
		android:layout_height="65dp"
		android:layout_alignParentTop="true"
		android:layout_toRightOf="@id/content_preview_image_1_large"
		android:layout_marginLeft="10dp"
		android:adjustViewBounds="true"
		android:gravity="center"
		android:scaleType="centerCrop"/>

		<view class="com.android.internal.app.ChooserActivity$RoundedRectImageView"
		android:id="@+id/content_preview_image_3_small"
		android:visibility="gone"
		android:layout_width="120dp"
		android:layout_height="65dp"
		android:layout_below="@id/content_preview_image_2_small"
		android:layout_toRightOf="@id/content_preview_image_1_large"
		android:layout_marginLeft="10dp"
		android:layout_marginTop="10dp"
		android:adjustViewBounds="true"
		android:gravity="center"
		android:scaleType="centerCrop"/>

		</RelativeLayout>
		</LinearLayout>

		<!-- Layout Option 2: Text preview, with optional title and thumbnail -->
		<LinearLayout
		android:id="@+id/content_preview"
		android:id="@+id/content_preview_text_area"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:orientation="vertical"
		android:paddingBottom="@dimen/chooser_view_spacing"
		android:visibility="gone"
		android:background="?attr/colorBackgroundFloating">

		<LinearLayout
		@@ -108,15 +180,12 @@

		<view class="com.android.internal.app.ChooserActivity$RoundedRectImageView"
		android:id="@+id/content_preview_thumbnail"
		android:layout_width="80dp"
		android:layout_height="80dp"
		android:layout_marginRight="12dp"
		android:layout_width="75dp"
		android:layout_height="75dp"
		android:layout_marginRight="16dp"
		android:adjustViewBounds="true"
		android:layout_gravity="center_vertical"
		android:gravity="center"
		android:maxWidth="70dp"
		android:maxHeight="70dp"
		android:padding="5dp"
		android:scaleType="centerCrop"/>

		<TextView

core/res/res/values/dimens.xml

+1 −0

Original line number	Diff line number	Diff line
		@@ -720,4 +720,5 @@
		<dimen name="chooser_view_spacing">18dp</dimen>
		<dimen name="chooser_edge_margin_thin">16dp</dimen>
		<dimen name="chooser_edge_margin_normal">24dp</dimen>
		<dimen name="chooser_preview_image_font_size">20sp</dimen>
		</resources>

core/res/res/values/symbols.xml

+7 −1

Original line number	Diff line number	Diff line
		@@ -50,9 +50,14 @@
		<java-symbol type="id" name="characterPicker" />
		<java-symbol type="id" name="clearDefaultHint" />
		<java-symbol type="id" name="contentPanel" />
		<java-symbol type="id" name="content_preview" />
		<java-symbol type="id" name="content_preview_image_area" />
		<java-symbol type="id" name="content_preview_image_1_large" />
		<java-symbol type="id" name="content_preview_image_2_large" />
		<java-symbol type="id" name="content_preview_image_2_small" />
		<java-symbol type="id" name="content_preview_image_3_small" />
		<java-symbol type="id" name="content_preview_thumbnail" />
		<java-symbol type="id" name="content_preview_text" />
		<java-symbol type="id" name="content_preview_text_area" />
		<java-symbol type="id" name="content_preview_text_layout" />
		<java-symbol type="id" name="content_preview_title" />
		<java-symbol type="id" name="content_preview_title_layout" />
		@@ -2724,6 +2729,7 @@
		<java-symbol type="dimen" name="chooser_view_spacing" />
		<java-symbol type="dimen" name="chooser_edge_margin_thin" />
		<java-symbol type="dimen" name="chooser_edge_margin_normal" />
		<java-symbol type="dimen" name="chooser_preview_image_font_size"/>
		<java-symbol type="layout" name="chooser_grid" />
		<java-symbol type="layout" name="resolve_grid_item" />
		<java-symbol type="id" name="day_picker_view_pager" />