android view clip,Android 自定义View Clip

先画俩矩形RectF rectF = new RectF(0,0,300,300);canvas.drawRect(rectF,mPaint);mPaint.setColor(Color.GREEN);RectF rectF2 = new RectF(400,400,600,600);canvas.drawRect(r...

卢新生

188人浏览 · 2021-05-27 11:11:27

卢新生 · 2021-05-27 11:11:27 发布

先画俩矩形

RectF rectF = new RectF(0,0,300,300); canvas.drawRect(rectF,mPaint); mPaint.setColor(Color.GREEN); RectF rectF2 = new RectF(400,400,600,600); canvas.drawRect(rectF2,mPaint);

然后说是有讲究 canvas.clipRect(0, 0, 300, 300); // canvas.clipRect(200, 200, 500, 500, Region.Op.DIFFERENCE); RectF rectF = new RectF(0,0,300,300); canvas.drawRect(rectF,mPaint); mPaint.setColor(Color.GREEN); RectF rectF2 = new RectF(200,200,500,500); canvas.drawRect(rectF2,mPaint);

canvas.clipRect(0, 0, 300, 300); canvas.clipRect(200, 200, 500, 500, Region.Op.DIFFERENCE); RectF rectF = new RectF(0,0,300,300); canvas.drawRect(rectF,mPaint); mPaint.setColor(Color.GREEN); RectF rectF2 = new RectF(200,200,500,500); canvas.drawRect(rectF2,mPaint);

第二个 canvas.clipRect(0, 0, 300, 300); canvas.clipRect(200, 200, 500, 500, Region.Op.INTERSECT); RectF rectF = new RectF(0,0,300,300); canvas.drawRect(rectF,mPaint); mPaint.setColor(Color.GREEN); RectF rectF2 = new RectF(200,200,500,500); canvas.drawRect(rectF2,mPaint);

canvas.clipRect(0, 0, 300, 300, Region.Op.DIFFERENCE); canvas.clipRect(200, 200, 500, 500); RectF rectF = new RectF(0, 0, 300, 300); canvas.drawRect(rectF, mPaint); mPaint.setColor(Color.GREEN); RectF rectF2 = new RectF(200, 200, 500, 500); canvas.drawRect(rectF2, mPaint);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) { canvas.clipPath(path); } else { canvas.clipPath(path, Region.Op.XOR);// REPLACE、UNION 等类型 } canvas.clipRect(200, 200, 500, 500, Region.Op.INTERSECT); RectF rectF = new RectF(0, 0, 300, 300); canvas.drawRect(rectF, mPaint); canvas.clipRect(0, 0, 300, 300, Region.Op.DIFFERENCE); mPaint.setColor(Color.GREEN); RectF rectF2 = new RectF(200, 200, 500, 500); canvas.drawRect(rectF2, mPaint);