Merge "Remove unreleased BlurShader API" into sc-dev am: d6eea182

    enum_constant public static final android.graphics.BlurMaskFilter.Blur SOLID;

  }

  public final class BlurShader extends android.graphics.Shader {

    ctor public BlurShader(float, float, @Nullable android.graphics.Shader);

    ctor public BlurShader(float, float, @Nullable android.graphics.Shader, @NonNull android.graphics.Shader.TileMode);

  }

  public class Camera {

    ctor public Camera();

    method public void applyToCanvas(android.graphics.Canvas);

/*

 * Copyright (C) 2020 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 android.graphics;

import android.annotation.NonNull;

import android.annotation.Nullable;

/**

 * A subclass of shader that blurs input from another {@link android.graphics.Shader} instance

 * or all the drawing commands with the {@link android.graphics.Paint} that this shader is

 * attached to.

 */

public final class BlurShader extends Shader {

    private final float mRadiusX;

    private final float mRadiusY;

    private final Shader mInputShader;

    private final TileMode mEdgeTreatment;

    private long mNativeInputShader = 0;

    /**

     * Create a {@link BlurShader} that blurs the contents of the optional input shader

     * with the specified radius along the x and y axis. If no input shader is provided

     * then all drawing commands issued with a {@link android.graphics.Paint} that this

     * shader is installed in will be blurred.

     *

     * This uses a default {@link TileMode#DECAL} for edge treatment

     *

     * @param radiusX Radius of blur along the X axis

     * @param radiusY Radius of blur along the Y axis

     * @param inputShader Input shader that provides the content to be blurred

     */

    public BlurShader(float radiusX, float radiusY, @Nullable Shader inputShader) {

        this(radiusX, radiusY, inputShader, TileMode.DECAL);

    }

    /**

     * Create a {@link BlurShader} that blurs the contents of the optional input shader

     * with the specified radius along the x and y axis. If no input shader is provided

     * then all drawing commands issued with a {@link android.graphics.Paint} that this

     * shader is installed in will be blurred

     * @param radiusX Radius of blur along the X axis

     * @param radiusY Radius of blur along the Y axis

     * @param inputShader Input shader that provides the content to be blurred

     * @param edgeTreatment Policy for how to blur content near edges of the blur shader

     */

    public BlurShader(float radiusX, float radiusY, @Nullable Shader inputShader,

            @NonNull TileMode edgeTreatment) {

        mRadiusX = radiusX;

        mRadiusY = radiusY;

        mInputShader = inputShader;

        mEdgeTreatment = edgeTreatment;

    }

    /** @hide **/

    @Override

    protected long createNativeInstance(long nativeMatrix, boolean filterFromPaint) {

        mNativeInputShader = mInputShader != null

                ? mInputShader.getNativeInstance(filterFromPaint) : 0;

        return nativeCreate(nativeMatrix, mRadiusX, mRadiusY, mNativeInputShader,

                mEdgeTreatment.nativeInt);

    }

    /** @hide **/

    @Override

    protected boolean shouldDiscardNativeInstance(boolean filterFromPaint) {

        long currentNativeInstance = mInputShader != null

                ? mInputShader.getNativeInstance(filterFromPaint) : 0;

        return mNativeInputShader != currentNativeInstance;

    }

    private static native long nativeCreate(long nativeMatrix, float radiusX, float radiusY,

            long inputShader, int edgeTreatment);

}