ClipImageLayout.java

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2015 Umeng, Inc
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.umeng.comm.ui.widgets;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.widget.RelativeLayout;

/**
 * 图片裁剪布局
 */
public class ClipImageLayout extends RelativeLayout {

    private ClipZoomImageView mZoomImageView;
    private ClipImageBorderView mClipImageView;
    /**
     * 中间的剪切区域距离左、右的距离
     */
    private int mHorizontalPadding = 20;

    public ClipImageLayout(Context context, AttributeSet attrs) {
        super(context, attrs);

        mZoomImageView = new ClipZoomImageView(context);
        mClipImageView = new ClipImageBorderView(context);

        android.view.ViewGroup.LayoutParams lp = new LayoutParams(
                android.view.ViewGroup.LayoutParams.MATCH_PARENT,
                android.view.ViewGroup.LayoutParams.MATCH_PARENT);

        this.addView(mZoomImageView, lp);
        this.addView(mClipImageView, lp);

        // 计算padding的px
        mHorizontalPadding = (int) TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, mHorizontalPadding, getResources()
                        .getDisplayMetrics());
        mZoomImageView.setHorizontalPadding(mHorizontalPadding);
        mClipImageView.setHorizontalPadding(mHorizontalPadding);
    }

    /**
     * 设置需要剪切的图片</br>
     * 
     * @param bitmap
     */
    public void setImageDrawable(Bitmap bitmap) {
        BitmapDrawable drawable = new BitmapDrawable(getContext().getResources(), bitmap);
        mZoomImageView.setImageDrawable(drawable);
    }

    /**
     * 对外公布设置边距的方法,单位为dp
     * 
     * @param horizontalPadding
     */
    public void setHorizontalPadding(int horizontalPadding) {
        mHorizontalPadding = horizontalPadding;
    }

    /**
     * 裁切图片
     * 
     * @return
     */
    public Bitmap clip() {
        return mZoomImageView.clip();
    }

}