android TileMode效果 水波纹效果 环形渐变

TileMode是一个枚举类,位于android.graphics.Shader类里面

android源码 public enum TileMode {/*** replicate the edge color if the shader draws outside of its* original bounds*/CLAMP (0),/*** repeat the shader’s image horizontally and vertically*/REPEAT (1),/*** repeat the shader’s image horizontally and vertically, alternating* mirror images so that adjacent images always seam*/MIRROR (2);TileMode(int nativeInt) {this.nativeInt = nativeInt;}final int nativeInt;}今天主要测试这几个属性的效果。先将部分测试代码贴出来: private void drawTextRadial(Canvas canvas, RectF rectF) {canvas.save();float centerX = rectF.centerX();float centerY = rectF.centerY();float radius = rectF.height();RadialGradient gradient = new RadialGradient(centerX, centerY, radius, Color.GREEN, Color.RED, TileMode.CLAMP); Paint paint = new Paint();paint.setAntiAlias(true);paint.setStyle(Paint.Style.FILL);paint.setTextSize(TEXTSIZE);paint.setFakeBoldText(true);paint.setShader(gradient);canvas.drawText(mText, rectF.left, rectF.bottom, paint);canvas.restore();}

CLAMP看意思是 如果超出规定的区域就重复边缘的效果,,看效果:

REPEAT的意思是 在竖直和水平方向上重复,看效果:

MIRROR的意思是 在竖直和水平方向上重复,交替的显示(翻译的貌似不对)看效果:

当你能梦的时候就不要放弃梦

android TileMode效果 水波纹效果 环形渐变

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