Android翻页效果，电子书(17)

              xShift = width - 2.0F * this.mPivotX;    
              xRotate = this.mPivotX;    
          }    
          if ((this.mCorner & 0x2) != 0) {    
              yRotate = 0.0F;    
          }    
          canvas.translate(this.mOuterOffsetX + xShift, this.mOuterOffsetY);    
          canvas.rotate(this.mRotation, xRotate, yRotate);    
              
          //画原本的背面    
          if (this.mBackPage != null) {    
              this.mBackPage.setBounds(0, 0, this.mChildRect.right, this.mChildRect.bottom);    
              this.mBackPage.draw(canvas);    
          }    
          //画回调函数中的画背面    
          if (this.mPage != null) {    
                Log.v("log2 drawBackPage2:", "drawing back page");    
              this.mPage.drawBackPage(canvas);    
          }    
              
          canvas.restore();    
          canvas.save();    
//        canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG));    
//        int[] colors={Color.BLACK,Color.GRAY,Color.BLACK};    
//          LinearGradient grad = new LinearGradient(