示例#1
0
        protected void paintInkCircle(
            Canvas canvas,
            Matrix4 transform,
            Paint paint,
            Offset center,
            float radius,
            TextDirection?textDirection = null,
            ShapeBorder customBorder    = null,
            BorderRadius borderRadius   = null,
            RectCallback clipCallback   = null)
        {
            borderRadius = borderRadius ?? BorderRadius.zero;
            D.assert(canvas != null);
            D.assert(transform != null);
            D.assert(paint != null);
            D.assert(center != null);
            D.assert(borderRadius != null);

            Offset originOffset = MatrixUtils.getAsTranslation(transform);

            canvas.save();
            if (originOffset == null)
            {
                canvas.transform(transform.storage);
            }
            else
            {
                canvas.translate(originOffset.dx, originOffset.dy);
            }

            if (clipCallback != null)
            {
                Rect rect = clipCallback();
                if (customBorder != null)
                {
                    canvas.clipPath(customBorder.getOuterPath(rect, textDirection: textDirection));
                }
                else if (borderRadius != BorderRadius.zero)
                {
                    canvas.clipRRect(RRect.fromRectAndCorners(
                                         rect,
                                         topLeft: borderRadius.topLeft, topRight: borderRadius.topRight,
                                         bottomLeft: borderRadius.bottomLeft, bottomRight: borderRadius.bottomRight
                                         ));
                }
                else
                {
                    canvas.clipRect(rect);
                }
            }

            canvas.drawCircle(center, radius, paint);
            canvas.restore();
        }
示例#2
0
        void _paintHighlight(Canvas canvas, Rect rect, Paint paint)
        {
            canvas.save();
            if (_customBorder != null)
            {
                canvas.clipPath(_customBorder.getOuterPath(rect, textDirection: _textDirection));
            }

            switch (_shape)
            {
            case BoxShape.circle: {
                canvas.drawCircle(rect.center, Material.defaultSplashRadius, paint);
                break;
            }

            case BoxShape.rectangle: {
                if (_borderRadius != BorderRadius.zero)
                {
                    RRect clipRRect = RRect.fromRectAndCorners(
                        rect,
                        topLeft: _borderRadius.topLeft,
                        topRight: _borderRadius.topRight,
                        bottomLeft: _borderRadius.bottomLeft,
                        bottomRight: _borderRadius.bottomRight);
                    canvas.drawRRect(clipRRect, paint);
                }
                else
                {
                    canvas.drawRect(rect, paint);
                }

                break;
            }
            }

            canvas.restore();
        }
 public override Path getOuterPath(Rect rect, TextDirection?textDirection)
 {
     return(shape.getOuterPath(rect));
 }