2015年8月12日

canvas.saveLayerAlpha实现“回”矩形框绘制效果

摘要： 效果如图：代码如下：canvas.drawBitmap(mb, 100, 100, mPaint);RectF innerRect = new RectF(250, 250, 550, 550);RectF outterRect = new RectF(100, 100, 100 + mb.getW... 阅读全文

posted @ 2015-08-12 18:53 Matrixin 阅读(831) 评论(0) 推荐(0)

Matrix.mapRect()理解

摘要： RectF r = new RectF(50, 0, 100, 100);Log.d("m1", "-r.left = " + r.left + ", right = " + r.right + ", top = " + r.top + ", bottom = " + r.bottom);Matr... 阅读全文

posted @ 2015-08-12 15:58 Matrixin 阅读(4467) 评论(0) 推荐(0)

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