CircleAnimView.java
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package immortalz.me.library.view;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.RectF;
import android.graphics.Xfermode;
import android.util.AttributeSet;
import immortalz.me.library.R;
import immortalz.me.library.bean.InfoBean;
/**
* Created by Mr_immortalZ on 2016/10/13.
* email : mr_immortalz@qq.com
*/
public class CircleAnimView extends RenderView{
private Canvas mCanvas;
private Bitmap originalBitmap; // 画布bitmap
private Bitmap drawBitmap;
private Xfermode xfermode;
//画布宽度
private int canvaswWidth = 1080;
//画布高度
private int canvasHeight = 1920;
//画圆
private int cX;
private int cY;
private int radius;
private int maxRadius;
private int increaseSpeed = 5;
boolean startCircleAnim = false;
public CircleAnimView(Context context) {
super(context);
init(context);
}
public CircleAnimView(Context context, Bitmap bitmap) {
super(context);
drawBitmap = bitmap;
init(context);
}
public CircleAnimView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public CircleAnimView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
private void init(Context context) {
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL);
mPaint.setAntiAlias(true);
mPaint.setColor(getResources().getColor(R.color.showmethod_end_color));
xfermode = new PorterDuffXfermode(PorterDuff.Mode.DST_OUT);
setWillNotDraw(false);
}
@Override
public void startCircleAnim(InfoBean bean) {
originalBitmap = Bitmap.createBitmap(bean.windowWidth, bean.windowHeight, Bitmap.Config.ARGB_4444);
canvaswWidth = bean.windowWidth;
canvasHeight = bean.windowHeight;
mCanvas = new Canvas(originalBitmap);
startCircleAnim = true;
cX = bean.targetWidth / 2 + bean.targetRect.left;
cY = bean.targetHeight / 2 + bean.targetRect.top - bean.statusBarHeight - bean.titleHeight;
radius = (int) Math.hypot(bean.targetWidth / 2, bean.targetHeight / 2) / 4;
maxRadius = (int) Math.hypot(canvaswWidth, canvasHeight);
setBackgroundColor(getResources().getColor(android.R.color.transparent));
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
if (startCircleAnim) {
zoomDraw(canvas);
} else if (drawBitmap != null) {
canvas.drawBitmap(drawBitmap, 0, 0, null);
}
}
private void zoomDraw(Canvas canvas) {
if (radius < maxRadius) {
if (drawBitmap != null) {
mCanvas.drawBitmap(drawBitmap, null, new RectF(0, 0, canvaswWidth, canvasHeight), null);
} else {
mCanvas.drawRect(0, 0, canvaswWidth, canvasHeight, mPaint);
}
mPaint.setXfermode(xfermode);
mCanvas.drawCircle(cX, cY, radius, mPaint);
radius += increaseSpeed;
increaseSpeed += 6;
mPaint.setXfermode(null);
canvas.drawBitmap(originalBitmap, 0, 0, null);
invalidate();
} else {
startCircleAnim = false;
setVisibility(GONE);
//recycle
originalBitmap = null;
drawBitmap = null;
}
}
}