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Implement PlatformViewsController.createOverlaySurface (flutter/engine#19226)

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This commit is contained in:
Jason Simmons 2020-06-22 19:21:26 -07:00 committed by GitHub
parent b652c5d5e2
commit 5f53fb4fbf
1 changed files with 31 additions and 2 deletions
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33
engine/src/flutter/shell/platform/android/io/flutter/plugin/platform/PlatformViewsController.java
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@ -9,6 +9,9 @@ import static android.view.MotionEvent.PointerProperties;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.PixelFormat;
import android.hardware.HardwareBuffer;
import android.media.ImageReader;
import android.os.Build;
import android.util.DisplayMetrics;
import android.util.Log;
@ -17,6 +20,7 @@ import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.UiThread;
import androidx.annotation.VisibleForTesting;
import io.flutter.embedding.android.FlutterImageView;
import io.flutter.embedding.engine.FlutterOverlaySurface;
import io.flutter.embedding.engine.dart.DartExecutor;
import io.flutter.embedding.engine.systemchannels.PlatformViewsChannel;
@ -71,6 +75,12 @@ public class PlatformViewsController implements PlatformViewsAccessibilityDelega
// it is associated with(e.g if a platform view creates other views in the same virtual display.
private final HashMap<Context, View> contextToPlatformView;
// Map of unique IDs to views that render overlay layers.
private HashMap<Long, FlutterImageView> overlayLayerViews;
// Next available unique ID for use in overlayLayerViews;
private long nextOverlayLayerId = 0;
private final PlatformViewsChannel.PlatformViewsHandler channelHandler =
new PlatformViewsChannel.PlatformViewsHandler() {
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
@ -283,6 +293,7 @@ public class PlatformViewsController implements PlatformViewsAccessibilityDelega
vdControllers = new HashMap<>();
accessibilityEventsDelegate = new AccessibilityEventsDelegate();
contextToPlatformView = new HashMap<>();
overlayLayerViews = new HashMap<>();
}
/**
@ -552,7 +563,25 @@ public class PlatformViewsController implements PlatformViewsAccessibilityDelega
}
public FlutterOverlaySurface createOverlaySurface() {
// TODO: Implement this method. https://github.com/flutter/flutter/issues/58288
return null;
ImageReader imageReader;
if (android.os.Build.VERSION.SDK_INT >= 29) {
imageReader =
ImageReader.newInstance(
flutterView.getWidth(),
flutterView.getHeight(),
PixelFormat.RGBA_8888,
2,
HardwareBuffer.USAGE_GPU_SAMPLED_IMAGE | HardwareBuffer.USAGE_GPU_COLOR_OUTPUT);
} else {
imageReader =
ImageReader.newInstance(
flutterView.getWidth(), flutterView.getHeight(), PixelFormat.RGBA_8888, 2);
}
FlutterImageView imageView = new FlutterImageView(flutterView.getContext(), imageReader);
long id = nextOverlayLayerId++;
overlayLayerViews.put(id, imageView);
return new FlutterOverlaySurface(id, imageReader.getSurface());
}
}