src/com/android/gallery3d/photoeditor/actions/VignetteAction.java

/*
 * Copyright (C) 2010 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.gallery3d.photoeditor.actions;

import android.content.Context;
import android.util.AttributeSet;

import com.android.gallery3d.photoeditor.filters.VignetteFilter;

/**
 * An action handling vignette effect.
 */
public class VignetteAction extends EffectAction {

    private static final float DEFAULT_SCALE = 0.5f;

    public VignetteAction(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public void prepare() {
        final VignetteFilter filter = new VignetteFilter();

        ScaleSeekBar scalePicker = toolKit.addScalePicker(EffectToolKit.ScaleType.GENERIC);
        scalePicker.setOnScaleChangeListener(new ScaleSeekBar.OnScaleChangeListener() {

            @Override
            public void onProgressChanged(float progress, boolean fromUser) {
                if (fromUser) {
                    filter.setScale(progress);
                    notifyChanged(filter);
                }
            }
        });
        scalePicker.setProgress(DEFAULT_SCALE);

        filter.setScale(DEFAULT_SCALE);
        notifyChanged(filter);
    }
}