图片倒影效果实现，图片倒影实现,package my.y

图片倒影效果实现，图片倒影实现,package my.y

package my.yaner.android.component.animation;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Canvas;import android.graphics.LinearGradient;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.PorterDuff;import android.graphics.PorterDuffXfermode;import android.graphics.Shader;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.util.AttributeSet;import android.view.View;public class MirrorView extends View {    Paint m_paint;    int m_nShadowH;    public Drawable m_dw;    Bitmap m_bitmap;    Matrix mMatrix;    int shadowHeight;    public MirrorView(Context context, Bitmap bitmap) {        super(context);        m_bitmap = bitmap;        init();    }    private void init() {        m_dw = new BitmapDrawable(m_bitmap);        m_dw.setBounds(0, 0, m_dw.getIntrinsicWidth(), m_dw.getIntrinsicHeight());        m_nShadowH = m_dw.getIntrinsicHeight() / 1;        m_paint = new Paint(Paint.ANTI_ALIAS_FLAG);        LinearGradient lg = new LinearGradient(0, 0, 0, m_nShadowH, 0xB0FFFFFF, 0X000000, Shader.TileMode.CLAMP);        m_paint.setShader(lg);        m_paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.MULTIPLY));        mMatrix = new Matrix();    }    public void onDraw(Canvas canvas) {        super.onDraw(canvas);        int nX = 0;        int nY = 0;        drawNormallmg(canvas, nX, nY);        drawMirror(canvas, nX, nY);    }    private void drawMirror(Canvas canvas, int nX, int nY) {        int nW = m_dw.getIntrinsicWidth();        int nH = m_dw.getIntrinsicHeight();        shadowHeight = nH / 2;        float[] src = {0, nH, nW, nH, nW, nH - m_nShadowH, 0, nH - m_nShadowH};        float[] dst = {0, nH, nW, nH, nW, shadowHeight, 0, shadowHeight};        canvas.save();        mMatrix.setPolyToPoly(src, 0, dst, 0, src.length >> 1);        canvas.concat(mMatrix);        canvas.save(Canvas.MATRIX_SAVE_FLAG);        canvas.scale(1.0f, -1.0f);        canvas.translate(nX, -(nY + nH * 2));        canvas.clipRect(0, nH, nW, nH - m_nShadowH);        m_dw.draw(canvas);        canvas.restore();        canvas.save();        canvas.translate(nX, nY + nH);        canvas.drawRect(0, 0, nW, m_nShadowH, m_paint);        canvas.restore();        canvas.restore();    }    private void drawNormallmg(Canvas canvas, int nX, int nY) {        canvas.save(Canvas.MATRIX_SAVE_FLAG);        canvas.translate(nX, nY);        m_dw.draw(canvas);        canvas.restore();    }}//该片段来自于http://byrx.net