get Bitmap Fit Scale - Android Graphics

Android examples for Graphics:Bitmap Scale

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Description

get Bitmap Fit Scale

Demo Code

/*//from  w w  w .  ja va2s  . c  o m
 * Copyright (C) 2012 Kazuya (Kaz) Yokoyama <kazuya.yokoyama@gmail.com>
 *
 * 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.java2s;

public class Main {
    public static float getFitScale(int targetWidth, int targetHeight,
            int srcWidth, int srcHeight) {
        float ret = 0;

        if (targetWidth < targetHeight) {
            if (srcWidth < srcHeight) {
                ret = (float) targetHeight / (float) srcHeight;
                if ((srcWidth * ret) > targetWidth) {
                    ret = (float) targetWidth / (float) srcWidth;
                }
            } else {
                ret = (float) targetWidth / (float) srcWidth;
            }
        } else {
            if (srcWidth < srcHeight) {
                ret = (float) targetHeight / (float) srcHeight;
            } else {
                ret = (float) targetWidth / (float) srcWidth;
                if ((srcHeight * ret) > targetHeight) {
                    ret = (float) targetHeight / (float) srcHeight;
                }
            }
        }

        return ret;
    }
}

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