Size.java

package com.yydcdut.note.utils.camera.param;

import android.hardware.Camera;

/**
 * Created by yuyidong on 15/8/5.
 */
public class Size {
    public Size(int width, int height) {
        mWidth = width;
        mHeight = height;
    }

    public int getWidth() {
        return mWidth;
    }

    public int getHeight() {
        return mHeight;
    }

    @Override
    public boolean equals(final Object obj) {
        if (obj == null) {
            return false;
        }
        if (this == obj) {
            return true;
        }
        if (obj instanceof Size) {
            Size other = (Size) obj;
            return mWidth == other.mWidth && mHeight == other.mHeight;
        }
        return false;
    }

    @Override
    public String toString() {
        return mWidth + "x" + mHeight;
    }

    private static NumberFormatException invalidSize(String s) {
        throw new NumberFormatException("Invalid Size: \"" + s + "\"");
    }

    public static Size parseSize(String string)
            throws NumberFormatException {
        if (string == null) {
            throw new IllegalArgumentException("string must not be null");
        }
        int sep_ix = string.indexOf('*');
        if (sep_ix < 0) {
            sep_ix = string.indexOf('x');
        }
        if (sep_ix < 0) {
            throw invalidSize(string);
        }
        try {
            return new Size(Integer.parseInt(string.substring(0, sep_ix)),
                    Integer.parseInt(string.substring(sep_ix + 1)));
        } catch (NumberFormatException e) {
            throw invalidSize(string);
        }
    }

    public static Size parseSize(Camera.Size size) {
        if (size == null) {
            throw new IllegalArgumentException("size must not be null");
        }
        return new Size(size.width, size.height);
    }

    @Override
    public int hashCode() {
        // assuming most sizes are <2^16, doing a rotate will give us perfect hashing
        return mHeight ^ ((mWidth << (Integer.SIZE / 2)) | (mWidth >>> (Integer.SIZE / 2)));
    }

    private final int mWidth;
    private final int mHeight;


    public static Size translate(int width, int height) {
        return new Size(width, height);
    }
}