Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * 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.
 */

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;

public class Main {
    public static Bitmap resizeDownIfTooBig(final Bitmap bitmap, final int targetSize, final boolean recycle) {
        final int srcWidth = bitmap.getWidth();
        final int srcHeight = bitmap.getHeight();
        final float scale = Math.max((float) targetSize / srcWidth, (float) targetSize / srcHeight);
        if (scale > 0.5f)
            return bitmap;
        return resizeBitmapByScale(bitmap, scale, recycle);
    }

    public static Bitmap resizeBitmapByScale(final Bitmap bitmap, final float scale, final boolean recycle) {
        final int width = Math.round(bitmap.getWidth() * scale);
        final int height = Math.round(bitmap.getHeight() * scale);
        if (width == bitmap.getWidth() && height == bitmap.getHeight())
            return bitmap;
        final Bitmap target = Bitmap.createBitmap(width, height, getConfig(bitmap));
        final Canvas canvas = new Canvas(target);
        canvas.scale(scale, scale);
        final Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG);
        canvas.drawBitmap(bitmap, 0, 0, paint);
        if (recycle) {
            bitmap.recycle();
        }
        return target;
    }

    private static Bitmap.Config getConfig(final Bitmap bitmap) {
        Bitmap.Config config = bitmap.getConfig();
        if (config == null) {
            config = Bitmap.Config.ARGB_8888;
        }
        return config;
    }
}