Using public APIs for hardware bitmaps

Bug: 35428783
Change-Id: I4e7eeaa94e0cdfb1c76dce507a6f855e4eebbd6c

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

@@ -15,9 +15,40 @@
  */
 package com.android.launcher3.graphics;
 
+import android.annotation.TargetApi;
+import android.graphics.Bitmap;
 import android.graphics.Canvas;
+import android.graphics.Picture;
+import android.os.Build;
 
-public interface BitmapRenderer {
+import com.android.launcher3.Utilities;
 
-     void render(Canvas out);
+public class BitmapRenderer {
+
+     public static final boolean USE_HARDWARE_BITMAP = false && Utilities.ATLEAST_P;
+
+     public static Bitmap createSoftwareBitmap(int width, int height, Renderer renderer) {
+          Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+          renderer.draw(new Canvas(result));
+          return result;
+     }
+
+     @TargetApi(Build.VERSION_CODES.P)
+     public static Bitmap createHardwareBitmap(int width, int height, Renderer renderer) {
+          if (!USE_HARDWARE_BITMAP) {
+               return createSoftwareBitmap(width, height, renderer);
+          }
+
+          Picture picture = new Picture();
+          renderer.draw(picture.beginRecording(width, height));
+          picture.endRecording();
+          return Bitmap.createBitmap(picture);
+     }
+
+     /**
+      * Interface representing a bitmap draw operation.
+      */
+     public interface Renderer {
+          void draw(Canvas out);
+     }
 }