change package name to uiuios

iconloaderlib/src/com/android/uiuios/icons/GraphicsUtils.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.uiuios.icons;
+
+import android.graphics.Bitmap;
+import android.graphics.Rect;
+import android.graphics.Region;
+import android.graphics.RegionIterator;
+import android.util.Log;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import androidx.annotation.ColorInt;
+
+public class GraphicsUtils {
+
+    private static final String TAG = "GraphicsUtils";
+
+    /**
+     * Set the alpha component of {@code color} to be {@code alpha}. Unlike the support lib version,
+     * it bounds the alpha in valid range instead of throwing an exception to allow for safer
+     * interpolation of color animations
+     */
+    @ColorInt
+    public static int setColorAlphaBound(int color, int alpha) {
+        if (alpha < 0) {
+            alpha = 0;
+        } else if (alpha > 255) {
+            alpha = 255;
+        }
+        return (color & 0x00ffffff) | (alpha << 24);
+    }
+
+    /**
+     * Compresses the bitmap to a byte array for serialization.
+     */
+    public static byte[] flattenBitmap(Bitmap bitmap) {
+        // Try go guesstimate how much space the icon will take when serialized
+        // to avoid unnecessary allocations/copies during the write (4 bytes per pixel).
+        int size = bitmap.getWidth() * bitmap.getHeight() * 4;
+        ByteArrayOutputStream out = new ByteArrayOutputStream(size);
+        try {
+            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
+            out.flush();
+            out.close();
+            return out.toByteArray();
+        } catch (IOException e) {
+            Log.w(TAG, "Could not write bitmap");
+            return null;
+        }
+    }
+
+    public static int getArea(Region r) {
+        RegionIterator itr = new RegionIterator(r);
+        int area = 0;
+        Rect tempRect = new Rect();
+        while (itr.next(tempRect)) {
+            area += tempRect.width() * tempRect.height();
+        }
+        return area;
+    }
+}