我正在用@Override
的ReplacementSpan
方法创建一个矩形。如何在其中添加RoundCorner
和padding
?
代码:
@Override
public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) {
RectF rect = new RectF(x, top, x + measureText(paint, text, start, end), bottom);
paint.setColor(mBackgroundColor);
canvas.drawRect(rect, paint);
paint.setColor(mForegroundColor);
canvas.drawText(text, start, end, x, y, paint);
}
我正在使用MeasureText:
private float measureText(Paint paint, CharSequence text, int start, int end) {
return paint.measureText(text, start, end);
}
经过一些建议,我做了这些更改,然后可以在Rounded
上看到Rectangle
角
@Override
public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) {
RectF rect = new RectF(x, top, x + measureText(paint, text, start, end), bottom);
paint.setColor(mBackgroundColor);
canvas.drawRoundRect(rect, 15,15,paint);
paint.setColor(mForegroundColor);
canvas.drawText(text, start, end, x, y, paint);
}
这是屏幕截图:
我正在从以下代码中调用draw
方法:
int currentIndex = 0;
for (int i = 0; i < words.length - 1; i++) {
s.setSpan(new CustomDrawble(Color.GRAY, Color.WHITE), currentIndex, currentIndex + words[i].length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
currentIndex += words[i].length() + 1;
}
画布具有方法drawRoundRect。与RectF
一样,您将必须提供要绘制的Paint
,drawRect
和两个附加参数rx
和ry
,它们代表圆角的x和y半径。例如:
canvas.drawRoundRect(rect, 5, 5, paint);
将绘制一个圆角为5像素的矩形
Edit2:
免责声明:使用DIP代替像素
@Override
public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) {
RectF rect = new RectF(x, top, x + measureText(paint, text, start, end) + 10, bottom);
paint.setColor(mBackgroundColor);
canvas.drawRoundRect(rect, 15,15,paint);
paint.setColor(mForegroundColor);
canvas.drawText(text, start, end, x + 5, y, paint);
}
这对我有用:
public static int cnvToDip(Context context,
int pixels)
{
return ((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, pixels, context.getResources().getDisplayMetrics()));
}
public static float[] getRoundRectangleShape(Context context,
int radius)
{
Display display = ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
Point point = new Point();
display.getSize(point);
return new float[]{point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius),
point.x / cnvToDip(context, radius)};
}
ShapeDrawable shapeDrawable = new ShapeDrawable(new RoundRectShape(getRoundRectangleShape(context, 20), null, null));
shapeDrawable.getPaint().setColor(Color.BLUE);
@Override
public void draw(Canvas canvas)
{
super.draw(canvas);
shapeDrawable.draw(canvas);