src/com/android/gallery3d/filtershow/cache/ZoomCache.java

/*
 * Copyright (C) 2012 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.filtershow.cache;

import android.graphics.Bitmap;
import android.graphics.Rect;

import com.android.gallery3d.filtershow.presets.ImagePreset;

public class ZoomCache {

    private ImagePreset mImagePreset = null;
    private Bitmap mBitmap = null;
    private Rect mBounds = null;

    // TODO: move the processing to a background thread...
    public Bitmap getImage(ImagePreset preset, Rect bounds) {
        if (mBounds != bounds) {
            return null;
        }
        if (mImagePreset == null) {
            return null;
        }
        if (!mImagePreset.same(preset)) {
            return null;
        }
        return mBitmap;
    }

    public void setImage(ImagePreset preset, Rect bounds, Bitmap bitmap) {
        mBitmap = bitmap;
        mBounds = bounds;
        mImagePreset = preset;
    }

    public void reset(ImagePreset imagePreset) {
        if (imagePreset == mImagePreset) {
            mBitmap = null;
        }
    }
}