RoundImageView.java
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package com.cnlive.goldenline.ui.widget;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
* <br/> ****************************************************
* <br/> Project Name : goldenline-android3.0
* <br/> Create Date : 2017/3/17 0017
* <br/> Author : MaChao
* <br/> Msg :
* <br/> Remark :
* <br/> ****************************************************
*/
public class RoundImageView extends ImageView {
public RoundImageView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public RoundImageView(Context context) {
super(context);
init();
}
private final RectF roundRect = new RectF();
private float rect_adius = 2;
private final Paint maskPaint = new Paint();
private final Paint zonePaint = new Paint();
private void init() {
maskPaint.setAntiAlias(true);
maskPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
//
zonePaint.setAntiAlias(true);
zonePaint.setColor(Color.WHITE);
//
float density = getResources().getDisplayMetrics().density;
rect_adius = rect_adius * density;
}
public void setRectAdius(float adius) {
rect_adius = adius;
invalidate();
}
@Override
protected void onLayout(boolean changed, int left, int top, int right,
int bottom) {
super.onLayout(changed, left, top, right, bottom);
int w = getWidth();
int h = getHeight();
roundRect.set(0, 0, w, h);
}
@Override
public void draw(Canvas canvas) {
canvas.saveLayer(roundRect, zonePaint, Canvas.ALL_SAVE_FLAG);
canvas.drawRoundRect(roundRect, rect_adius, rect_adius, zonePaint);
//
canvas.saveLayer(roundRect, maskPaint, Canvas.ALL_SAVE_FLAG);
super.draw(canvas);
canvas.restore();
}
}