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,以镜像的方式显示,看效果: