开发学院手机开发Android 开发 Android 倒影实现算法 阅读

Android 倒影实现算法

 2010-12-18 08:03:58 来源:WEB开发网   
核心提示:public class MirrorView extends View {Paint m_paint;int m_nShadowH;Drawable m_dw;Bitmap m_bitmap;//xxxxMatrix mMatrix;int shadowHeight;public MirrorView(Context

public class MirrorView extends View {

Paint m_paint;

int m_nShadowH;

Drawable m_dw;

Bitmap m_bitmap;

//xxxx

Matrix mMatrix;

int shadowHeight;

public MirrorView(Context context, Bitmap bitmap) {

super(context);

m_bitmap = bitmap;

_Init();

// TODO Auto-generated constructor stub

}

private void _Init() {

//m_dw = new BitmapDrawable(BitmapFactory.decodeResource(getResources(), R.drawable.icon));

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, 0x00000000, Shader.TileMode.CLAMP);

m_paint.setShader(lg);

m_paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.MULTIPLY));

//xxxx

mMatrix = new Matrix();

}

@Override

public void onDraw(Canvas canvas) {

super.onDraw(canvas);

int nX = 0;

int nY = 0;

_DrawNormalImg(canvas, nX, nY);

_DrawMirror(canvas, nX, nY);

}

private void _DrawNormalImg(Canvas canvas, int nX, int nY) {

canvas.save(Canvas.MATRIX_SAVE_FLAG);

canvas.translate(nX, nY);

m_dw.draw(canvas);

canvas.restore();

}

private void _DrawMirror(Canvas canvas, int nX, int nY) {

int nW = m_dw.getIntrinsicWidth();

int nH = m_dw.getIntrinsicHeight();

// U.dout("nW="+nW+",nH="+nH);

//xxxx

shadowHeight=nH/2;

//xxxx

float[] src={0, nH, nW, nH, nW,nH - m_nShadowH, 0, nH - m_nShadowH};

float[] dst={ 0, nH, nW, nH,nW, shadowHeight, 0, shadowHeight };

1 2  下一页

Tags:Android 倒影 实现

编辑录入:爽爽 [复制链接] [打 印]
[]
  • 好
  • 好的评价 如果觉得好,就请您
      0%(0)
  • 差
  • 差的评价 如果觉得差,就请您
      0%(0)
更多精彩
    赞助商链接

    热点阅读
      焦点图片
        最新推荐
          精彩阅读