javafx.scene.shape.Shape Maven / Gradle / Ivy
/*
* Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package javafx.scene.shape;
import javafx.beans.Observable;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.Property;
import javafx.collections.ListChangeListener.Change;
import javafx.collections.ObservableList;
import javafx.css.CssMetaData;
import javafx.css.Styleable;
import javafx.css.StyleableBooleanProperty;
import javafx.css.StyleableDoubleProperty;
import javafx.css.StyleableObjectProperty;
import javafx.css.StyleableProperty;
import javafx.scene.Node;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.sun.javafx.util.Utils;
import com.sun.javafx.beans.event.AbstractNotifyListener;
import com.sun.javafx.collections.TrackableObservableList;
import javafx.css.converter.BooleanConverter;
import javafx.css.converter.EnumConverter;
import javafx.css.converter.PaintConverter;
import javafx.css.converter.SizeConverter;
import com.sun.javafx.geom.Area;
import com.sun.javafx.geom.BaseBounds;
import com.sun.javafx.geom.PathIterator;
import com.sun.javafx.geom.transform.Affine3D;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.javafx.scene.DirtyBits;
import com.sun.javafx.scene.NodeHelper;
import com.sun.javafx.scene.shape.ShapeHelper;
import com.sun.javafx.sg.prism.NGShape;
import com.sun.javafx.tk.Toolkit;
import java.lang.ref.Reference;
import java.lang.ref.WeakReference;
/**
* The {@code Shape} class provides definitions of common properties for
* objects that represent some form of geometric shape. These properties
* include:
*
* - The {@link Paint} to be applied to the fillable interior of the
* shape (see {@link #setFill setFill}).
*
- The {@link Paint} to be applied to stroke the outline of the
* shape (see {@link #setStroke setStroke}).
*
- The decorative properties of the stroke, including:
*
* - The width of the border stroke.
*
- Whether the border is drawn as an exterior padding to the edges
* of the shape, as an interior edging that follows the inside of the border,
* or as a wide path that follows along the border straddling it equally
* both inside and outside (see {@link StrokeType}).
*
- Decoration styles for the joins between path segments and the
* unclosed ends of paths.
*
- Dashing attributes.
*
*
*
*
* An application should not extend the Shape class directly. Doing so may lead to
* an UnsupportedOperationException being thrown.
*
*
* Interaction with coordinate systems
* Most nodes tend to have only integer translations applied to them and
* quite often they are defined using integer coordinates as well. For
* this common case, fills of shapes with straight line edges tend to be
* crisp since they line up with the cracks between pixels that fall on
* integer device coordinates and thus tend to naturally cover entire pixels.
*
* On the other hand, stroking those same shapes can often lead to fuzzy
* outlines because the default stroking attributes specify both that the
* default stroke width is 1.0 coordinates which often maps to exactly 1
* device pixel and also that the stroke should straddle the border of the
* shape, falling half on either side of the border.
* Since the borders in many common shapes tend to fall directly on integer
* coordinates and those integer coordinates often map precisely to integer
* device locations, the borders tend to result in 50% coverage over the
* pixel rows and columns on either side of the border of the shape rather
* than 100% coverage on one or the other. Thus, fills may typically be
* crisp, but strokes are often fuzzy.
*
* Two common solutions to avoid these fuzzy outlines are to use wider
* strokes that cover more pixels completely - typically a stroke width of
* 2.0 will achieve this if there are no scale transforms in effect - or
* to specify either the {@link StrokeType#INSIDE} or {@link StrokeType#OUTSIDE}
* stroke styles - which will bias the default single unit stroke onto one
* of the full pixel rows or columns just inside or outside the border of
* the shape.
* @since JavaFX 2.0
*/
public abstract class Shape extends Node {
static {
// This is used by classes in different packages to get access to
// private and package private methods.
ShapeHelper.setShapeAccessor(new ShapeHelper.ShapeAccessor() {
@Override
public void doUpdatePeer(Node node) {
((Shape) node).doUpdatePeer();
}
@Override
public void doMarkDirty(Node node, DirtyBits dirtyBit) {
((Shape) node).doMarkDirty(dirtyBit);
}
@Override
public BaseBounds doComputeGeomBounds(Node node,
BaseBounds bounds, BaseTransform tx) {
return ((Shape) node).doComputeGeomBounds(bounds, tx);
}
@Override
public boolean doComputeContains(Node node, double localX, double localY) {
return ((Shape) node).doComputeContains(localX, localY);
}
@Override
public Paint doCssGetFillInitialValue(Shape shape) {
return shape.doCssGetFillInitialValue();
}
@Override
public Paint doCssGetStrokeInitialValue(Shape shape) {
return shape.doCssGetStrokeInitialValue();
}
@Override
public NGShape.Mode getMode(Shape shape) {
return shape.getMode();
}
@Override
public void setMode(Shape shape, NGShape.Mode mode) {
shape.setMode(mode);
}
@Override
public void setShapeChangeListener(Shape shape, Runnable listener) {
shape.setShapeChangeListener(listener);
}
});
}
/**
* Creates an empty instance of Shape.
*/
public Shape() {
}
StrokeLineJoin convertLineJoin(StrokeLineJoin t) {
return t;
}
public final void setStrokeType(StrokeType value) {
strokeTypeProperty().set(value);
}
public final StrokeType getStrokeType() {
return (strokeAttributes == null) ? DEFAULT_STROKE_TYPE
: strokeAttributes.getType();
}
/**
* Defines the direction (inside, centered, or outside) that the strokeWidth
* is applied to the boundary of the shape.
*
*
* The image shows a shape without stroke and with a thick stroke applied
* inside, centered and outside.
*
* 
*
* @return the direction that the strokeWidth is applied to the boundary of
* the shape
* @see StrokeType
* @defaultValue CENTERED
*/
public final ObjectProperty strokeTypeProperty() {
return getStrokeAttributes().typeProperty();
}
public final void setStrokeWidth(double value) {
strokeWidthProperty().set(value);
}
public final double getStrokeWidth() {
return (strokeAttributes == null) ? DEFAULT_STROKE_WIDTH
: strokeAttributes.getWidth();
}
/**
* Defines a square pen line width. A value of 0.0 specifies a hairline
* stroke. A value of less than 0.0 will be treated as 0.0.
*
* @return the square pen line width
* @defaultValue 1.0
*/
public final DoubleProperty strokeWidthProperty() {
return getStrokeAttributes().widthProperty();
}
public final void setStrokeLineJoin(StrokeLineJoin value) {
strokeLineJoinProperty().set(value);
}
public final StrokeLineJoin getStrokeLineJoin() {
return (strokeAttributes == null)
? DEFAULT_STROKE_LINE_JOIN
: strokeAttributes.getLineJoin();
}
/**
* Defines the decoration applied where path segments meet.
* The value must have one of the following values:
* {@code StrokeLineJoin.MITER}, {@code StrokeLineJoin.BEVEL},
* and {@code StrokeLineJoin.ROUND}. The image shows a shape
* using the values in the mentioned order.
* 
*
* @return the decoration applied where path segments meet
* @see StrokeLineJoin
* @defaultValue MITER
*/
public final ObjectProperty strokeLineJoinProperty() {
return getStrokeAttributes().lineJoinProperty();
}
public final void setStrokeLineCap(StrokeLineCap value) {
strokeLineCapProperty().set(value);
}
public final StrokeLineCap getStrokeLineCap() {
return (strokeAttributes == null) ? DEFAULT_STROKE_LINE_CAP
: strokeAttributes.getLineCap();
}
/**
* The end cap style of this {@code Shape} as one of the following
* values that define possible end cap styles:
* {@code StrokeLineCap.BUTT}, {@code StrokeLineCap.ROUND},
* and {@code StrokeLineCap.SQUARE}. The image shows a line
* using the values in the mentioned order.
* 
*
* @return the end cap style of this shape
* @see StrokeLineCap
* @defaultValue SQUARE
*/
public final ObjectProperty strokeLineCapProperty() {
return getStrokeAttributes().lineCapProperty();
}
public final void setStrokeMiterLimit(double value) {
strokeMiterLimitProperty().set(value);
}
public final double getStrokeMiterLimit() {
return (strokeAttributes == null) ? DEFAULT_STROKE_MITER_LIMIT
: strokeAttributes.getMiterLimit();
}
/**
* Defines the limit for the {@code StrokeLineJoin.MITER} line join style.
* A value of less than 1.0 will be treated as 1.0.
*
*
* The image demonstrates the behavior. Miter length ({@code A}) is computed
* as the distance of the most inside point to the most outside point of
* the joint, with the stroke width as a unit. If the miter length is bigger
* than the given miter limit, the miter is cut at the edge of the shape
* ({@code B}). For the situation in the image it means that the miter
* will be cut at {@code B} for limit values less than {@code 4.65}.
*
* 
*
* @return the limit for the {@code StrokeLineJoin.MITER} line join style
* @defaultValue 10.0
*/
public final DoubleProperty strokeMiterLimitProperty() {
return getStrokeAttributes().miterLimitProperty();
}
public final void setStrokeDashOffset(double value) {
strokeDashOffsetProperty().set(value);
}
public final double getStrokeDashOffset() {
return (strokeAttributes == null) ? DEFAULT_STROKE_DASH_OFFSET
: strokeAttributes.getDashOffset();
}
/**
* Defines a distance specified in user coordinates that represents
* an offset into the dashing pattern. In other words, the dash phase
* defines the point in the dashing pattern that will correspond
* to the beginning of the stroke.
*
*
* The image shows a stroke with dash array {@code [25, 20, 5, 20]} and
* a stroke with the same pattern and offset {@code 45} which shifts
* the pattern about the length of the first dash segment and
* the following space.
*
* 
*
* @return the distance specified in user coordinates that represents an
* offset into the dashing pattern
* @defaultValue 0
*/
public final DoubleProperty strokeDashOffsetProperty() {
return getStrokeAttributes().dashOffsetProperty();
}
/**
* Defines the array representing the lengths of the dash segments.
* Alternate entries in the array represent the user space lengths
* of the opaque and transparent segments of the dashes.
* As the pen moves along the outline of the {@code Shape} to be stroked,
* the user space distance that the pen travels is accumulated.
* The distance value is used to index into the dash array.
* The pen is opaque when its current cumulative distance maps
* to an even element of the dash array (counting from {@code 0}) and
* transparent otherwise.
*
* An empty strokeDashArray indicates a solid line with no spaces.
* An odd length strokeDashArray behaves the same as an even length
* array constructed by implicitly repeating the indicated odd length
* array twice in succession ({@code [20, 5, 15]} behaves as if it
* were {@code [20, 5, 15, 20, 5, 15]}).
*
* Note that each dash segment will be capped by the decoration specified
* by the current stroke line cap.
*
*
* The image shows a shape with stroke dash array {@code [25, 20, 5, 20]}
* and 3 different values for the stroke line cap:
* {@code StrokeLineCap.BUTT}, {@code StrokeLineCap.SQUARE} (the default),
* and {@code StrokeLineCap.ROUND}
*
* 
*
* @return the array representing the lengths of the dash segments
* @defaultValue empty
*/
public final ObservableList getStrokeDashArray() {
return getStrokeAttributes().dashArrayProperty();
}
private NGShape.Mode computeMode() {
if (getFill() != null && getStroke() != null) {
return NGShape.Mode.STROKE_FILL;
} else if (getFill() != null) {
return NGShape.Mode.FILL;
} else if (getStroke() != null) {
return NGShape.Mode.STROKE;
} else {
return NGShape.Mode.EMPTY;
}
}
NGShape.Mode getMode() {
return mode;
}
void setMode(NGShape.Mode mode) {
mode = mode;
}
private NGShape.Mode mode = NGShape.Mode.FILL;
private void checkModeChanged() {
NGShape.Mode newMode = computeMode();
if (mode != newMode) {
mode = newMode;
NodeHelper.markDirty(this, DirtyBits.SHAPE_MODE);
NodeHelper.geomChanged(this);
}
}
/**
* Defines parameters to fill the interior of an {@code Shape}
* using the settings of the {@code Paint} context.
* The default value is {@code Color.BLACK} for all shapes except
* Line, Polyline, and Path. The default value is {@code null} for
* those shapes.
*/
private ObjectProperty fill;
public final void setFill(Paint value) {
fillProperty().set(value);
}
public final Paint getFill() {
return fill == null ? Color.BLACK : fill.get();
}
Paint old_fill;
public final ObjectProperty fillProperty() {
if (fill == null) {
fill = new StyleableObjectProperty(Color.BLACK) {
boolean needsListener = false;
@Override public void invalidated() {
Paint _fill = get();
if (needsListener) {
Toolkit.getPaintAccessor().
removeListener(old_fill, platformImageChangeListener);
}
needsListener = _fill != null &&
Toolkit.getPaintAccessor().isMutable(_fill);
old_fill = _fill;
if (needsListener) {
Toolkit.getPaintAccessor().
addListener(_fill, platformImageChangeListener);
}
NodeHelper.markDirty(Shape.this, DirtyBits.SHAPE_FILL);
checkModeChanged();
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.FILL;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "fill";
}
};
}
return fill;
}
/**
* Defines parameters of a stroke that is drawn around the outline of
* a {@code Shape} using the settings of the specified {@code Paint}.
* The default value is {@code null} for all shapes except
* Line, Polyline, and Path. The default value is {@code Color.BLACK} for
* those shapes.
*/
private ObjectProperty stroke;
public final void setStroke(Paint value) {
strokeProperty().set(value);
}
private final AbstractNotifyListener platformImageChangeListener =
new AbstractNotifyListener() {
@Override
public void invalidated(Observable valueModel) {
NodeHelper.markDirty(Shape.this, DirtyBits.SHAPE_FILL);
NodeHelper.markDirty(Shape.this, DirtyBits.SHAPE_STROKE);
NodeHelper.geomChanged(Shape.this);
checkModeChanged();
}
};
public final Paint getStroke() {
return stroke == null ? null : stroke.get();
}
Paint old_stroke;
public final ObjectProperty strokeProperty() {
if (stroke == null) {
stroke = new StyleableObjectProperty() {
boolean needsListener = false;
@Override public void invalidated() {
Paint _stroke = get();
if (needsListener) {
Toolkit.getPaintAccessor().
removeListener(old_stroke, platformImageChangeListener);
}
needsListener = _stroke != null &&
Toolkit.getPaintAccessor().isMutable(_stroke);
old_stroke = _stroke;
if (needsListener) {
Toolkit.getPaintAccessor().
addListener(_stroke, platformImageChangeListener);
}
NodeHelper.markDirty(Shape.this, DirtyBits.SHAPE_STROKE);
checkModeChanged();
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "stroke";
}
};
}
return stroke;
}
/**
* Defines whether antialiasing hints are used or not for this {@code Shape}.
* If the value equals true the rendering hints are applied.
*
* @defaultValue true
*/
private BooleanProperty smooth;
public final void setSmooth(boolean value) {
smoothProperty().set(value);
}
public final boolean isSmooth() {
return smooth == null ? true : smooth.get();
}
public final BooleanProperty smoothProperty() {
if (smooth == null) {
smooth = new StyleableBooleanProperty(true) {
@Override
public void invalidated() {
NodeHelper.markDirty(Shape.this, DirtyBits.NODE_SMOOTH);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.SMOOTH;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "smooth";
}
};
}
return smooth;
}
/***************************************************************************
* *
* Stylesheet Handling *
* *
**************************************************************************/
/*
* Some sub-class of Shape, such as {@link Line}, override the
* default value for the {@link Shape#fill} property. This allows
* CSS to get the correct initial value.
*
* Note: This method MUST only be called via its accessor method.
*/
private Paint doCssGetFillInitialValue() {
return Color.BLACK;
}
/*
* Some sub-class of Shape, such as {@link Line}, override the
* default value for the {@link Shape#stroke} property. This allows
* CSS to get the correct initial value.
*
* Note: This method MUST only be called via its accessor method.
*/
private Paint doCssGetStrokeInitialValue() {
return null;
}
/*
* Super-lazy instantiation pattern from Bill Pugh.
*/
private static class StyleableProperties {
/**
* @css -fx-fill: <paint>
* @see Shape#fill
*/
private static final CssMetaData FILL =
new CssMetaData("-fx-fill",
PaintConverter.getInstance(), Color.BLACK) {
@Override
public boolean isSettable(Shape node) {
return node.fill == null || !node.fill.isBound();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.fillProperty();
}
@Override
public Paint getInitialValue(Shape node) {
// Some shapes have a different initial value for fill.
// Give a way to have them return the correct initial value.
return ShapeHelper.cssGetFillInitialValue(node);
}
};
/**
* @css -fx-smooth: <boolean>
* @see Shape#smooth
*/
private static final CssMetaData SMOOTH =
new CssMetaData("-fx-smooth",
BooleanConverter.getInstance(), Boolean.TRUE) {
@Override
public boolean isSettable(Shape node) {
return node.smooth == null || !node.smooth.isBound();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.smoothProperty();
}
};
/**
* @css -fx-stroke: <paint>
* @see Shape#stroke
*/
private static final CssMetaData STROKE =
new CssMetaData("-fx-stroke",
PaintConverter.getInstance()) {
@Override
public boolean isSettable(Shape node) {
return node.stroke == null || !node.stroke.isBound();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeProperty();
}
@Override
public Paint getInitialValue(Shape node) {
// Some shapes have a different initial value for stroke.
// Give a way to have them return the correct initial value.
return ShapeHelper.cssGetStrokeInitialValue(node);
}
};
/**
* @css -fx-stroke-dash-array: <size>
* [<size>]+
*
* Note:
* Because {@link StrokeAttributes#dashArray} is not itself a
* {@link Property},
* the getProperty() method of this CssMetaData
* returns the {@link StrokeAttributes#dashArray} wrapped in an
* {@link ObjectProperty}. This is inconsistent with other
* StyleableProperties which return the actual {@link Property}.
*
* @see StrokeAttributes#dashArray
*/
private static final CssMetaData STROKE_DASH_ARRAY =
new CssMetaData("-fx-stroke-dash-array",
SizeConverter.SequenceConverter.getInstance(),
new Double[0]) {
@Override
public boolean isSettable(Shape node) {
return true;
}
@Override
public StyleableProperty getStyleableProperty(final Shape node) {
return (StyleableProperty)node.getStrokeAttributes().cssDashArrayProperty();
}
};
/**
* @css -fx-stroke-dash-offset: <size>
* @see #strokeDashOffsetProperty()
*/
private static final CssMetaData STROKE_DASH_OFFSET =
new CssMetaData("-fx-stroke-dash-offset",
SizeConverter.getInstance(), 0.0) {
@Override
public boolean isSettable(Shape node) {
return node.strokeAttributes == null ||
node.strokeAttributes.canSetDashOffset();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeDashOffsetProperty();
}
};
/**
* @css -fx-stroke-line-cap: [ square | butt | round ]
* @see #strokeLineCapProperty()
*/
private static final CssMetaData STROKE_LINE_CAP =
new CssMetaData("-fx-stroke-line-cap",
new EnumConverter(StrokeLineCap.class),
StrokeLineCap.SQUARE) {
@Override
public boolean isSettable(Shape node) {
return node.strokeAttributes == null ||
node.strokeAttributes.canSetLineCap();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeLineCapProperty();
}
};
/**
* @css -fx-stroke-line-join: [ miter | bevel | round ]
* @see #strokeLineJoinProperty()
*/
private static final CssMetaData STROKE_LINE_JOIN =
new CssMetaData("-fx-stroke-line-join",
new EnumConverter(StrokeLineJoin.class),
StrokeLineJoin.MITER) {
@Override
public boolean isSettable(Shape node) {
return node.strokeAttributes == null ||
node.strokeAttributes.canSetLineJoin();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeLineJoinProperty();
}
};
/**
* @css -fx-stroke-type: [ inside | outside | centered ]
* @see #strokeTypeProperty()
*/
private static final CssMetaData STROKE_TYPE =
new CssMetaData("-fx-stroke-type",
new EnumConverter(StrokeType.class),
StrokeType.CENTERED) {
@Override
public boolean isSettable(Shape node) {
return node.strokeAttributes == null ||
node.strokeAttributes.canSetType();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeTypeProperty();
}
};
/**
* @css -fx-stroke-miter-limit: <size>
* @see #strokeMiterLimitProperty()
*/
private static final CssMetaData STROKE_MITER_LIMIT =
new CssMetaData("-fx-stroke-miter-limit",
SizeConverter.getInstance(), 10.0) {
@Override
public boolean isSettable(Shape node) {
return node.strokeAttributes == null ||
node.strokeAttributes.canSetMiterLimit();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeMiterLimitProperty();
}
};
/**
* @css -fx-stroke-width: <size>
* @see #strokeWidthProperty()
*/
private static final CssMetaData STROKE_WIDTH =
new CssMetaData("-fx-stroke-width",
SizeConverter.getInstance(), 1.0) {
@Override
public boolean isSettable(Shape node) {
return node.strokeAttributes == null ||
node.strokeAttributes.canSetWidth();
}
@Override
public StyleableProperty getStyleableProperty(Shape node) {
return (StyleableProperty)node.strokeWidthProperty();
}
};
private static final List> STYLEABLES;
static {
final List> styleables =
new ArrayList>(Node.getClassCssMetaData());
styleables.add(FILL);
styleables.add(SMOOTH);
styleables.add(STROKE);
styleables.add(STROKE_DASH_ARRAY);
styleables.add(STROKE_DASH_OFFSET);
styleables.add(STROKE_LINE_CAP);
styleables.add(STROKE_LINE_JOIN);
styleables.add(STROKE_TYPE);
styleables.add(STROKE_MITER_LIMIT);
styleables.add(STROKE_WIDTH);
STYLEABLES = Collections.unmodifiableList(styleables);
}
}
/**
* @return The CssMetaData associated with this class, which may include the
* CssMetaData of its superclasses.
* @since JavaFX 8.0
*/
public static List> getClassCssMetaData() {
return StyleableProperties.STYLEABLES;
}
/**
* {@inheritDoc}
*
* @since JavaFX 8.0
*/
@Override
public List> getCssMetaData() {
return getClassCssMetaData();
}
/*
* Note: This method MUST only be called via its accessor method.
*/
private BaseBounds doComputeGeomBounds(BaseBounds bounds,
BaseTransform tx) {
return computeShapeBounds(bounds, tx, ShapeHelper.configShape(this));
}
/*
* Note: This method MUST only be called via its accessor method.
*/
private boolean doComputeContains(double localX, double localY) {
return computeShapeContains(localX, localY, ShapeHelper.configShape(this));
}
private static final double MIN_STROKE_WIDTH = 0.0f;
private static final double MIN_STROKE_MITER_LIMIT = 1.0f;
private void updatePGShape() {
final NGShape peer = NodeHelper.getPeer(this);
if (strokeAttributesDirty && (getStroke() != null)) {
// set attributes of stroke only when stroke paint is not null
final float[] pgDashArray =
(hasStrokeDashArray())
? toPGDashArray(getStrokeDashArray())
: DEFAULT_PG_STROKE_DASH_ARRAY;
peer.setDrawStroke(
(float)Utils.clampMin(getStrokeWidth(),
MIN_STROKE_WIDTH),
getStrokeType(),
getStrokeLineCap(),
convertLineJoin(getStrokeLineJoin()),
(float)Utils.clampMin(getStrokeMiterLimit(),
MIN_STROKE_MITER_LIMIT),
pgDashArray, (float)getStrokeDashOffset());
strokeAttributesDirty = false;
}
if (NodeHelper.isDirty(this, DirtyBits.SHAPE_MODE)) {
peer.setMode(mode);
}
if (NodeHelper.isDirty(this, DirtyBits.SHAPE_FILL)) {
Paint localFill = getFill();
peer.setFillPaint(localFill == null ? null :
Toolkit.getPaintAccessor().getPlatformPaint(localFill));
}
if (NodeHelper.isDirty(this, DirtyBits.SHAPE_STROKE)) {
Paint localStroke = getStroke();
peer.setDrawPaint(localStroke == null ? null :
Toolkit.getPaintAccessor().getPlatformPaint(localStroke));
}
if (NodeHelper.isDirty(this, DirtyBits.NODE_SMOOTH)) {
peer.setSmooth(isSmooth());
}
}
/*
* Note: This method MUST only be called via its accessor method.
*/
private void doMarkDirty(DirtyBits dirtyBits) {
final Runnable listener = shapeChangeListener != null ? shapeChangeListener.get() : null;
if (listener != null && NodeHelper.isDirtyEmpty(this)) {
listener.run();
}
}
private Reference shapeChangeListener;
void setShapeChangeListener(Runnable listener) {
if (shapeChangeListener != null) shapeChangeListener.clear();
shapeChangeListener = listener != null ? new WeakReference(listener) : null;
}
/*
* Note: This method MUST only be called via its accessor method.
*/
private void doUpdatePeer() {
updatePGShape();
}
/**
* Helper function for rectangular shapes such as Rectangle and Ellipse
* for computing their bounds.
*/
BaseBounds computeBounds(BaseBounds bounds, BaseTransform tx,
double upad, double dpad,
double x, double y,
double w, double h)
{
// if the w or h is < 0 then bounds is empty
if (w < 0.0f || h < 0.0f) return bounds.makeEmpty();
double x0 = x;
double y0 = y;
double x1 = w;
double y1 = h;
double _dpad = dpad;
if (tx.isTranslateOrIdentity()) {
x1 += x0;
y1 += y0;
if (tx.getType() == BaseTransform.TYPE_TRANSLATION) {
final double dx = tx.getMxt();
final double dy = tx.getMyt();
x0 += dx;
y0 += dy;
x1 += dx;
y1 += dy;
}
_dpad += upad;
} else {
x0 -= upad;
y0 -= upad;
x1 += upad*2;
y1 += upad*2;
// Each corner is transformed by an equation similar to:
// x' = x * mxx + y * mxy + mxt
// y' = x * myx + y * myy + myt
// Since all of the corners are translated by mxt,myt we
// can ignore them when doing the min/max calculations
// and add them in once when we are done. We then have
// to do min/max operations on 4 points defined as:
// x' = x * mxx + y * mxy
// y' = x * myx + y * myy
// Furthermore, the four corners that we will be transforming
// are not four independent coordinates, they are in a
// rectangular formation. To that end, if we translated
// the transform to x,y and scaled it by width,height then
// we could compute the min/max of the unit rectangle 0,0,1x1.
// The transform would then be adjusted as follows:
// First, the translation to x,y only affects the mxt,myt
// components of the transform which we can hold off on adding
// until we are done with the min/max. The adjusted translation
// components would be:
// mxt' = x * mxx + y * mxy + mxt
// myt' = x * myx + y * myy + myt
// Second, the scale affects the components as follows:
// mxx' = mxx * width
// mxy' = mxy * height
// myx' = myx * width
// myy' = myy * height
// The min/max of that rectangle then degenerates to:
// x00' = 0 * mxx' + 0 * mxy' = 0
// y00' = 0 * myx' + 0 * myy' = 0
// x01' = 0 * mxx' + 1 * mxy' = mxy'
// y01' = 0 * myx' + 1 * myy' = myy'
// x10' = 1 * mxx' + 0 * mxy' = mxx'
// y10' = 1 * myx' + 0 * myy' = myx'
// x11' = 1 * mxx' + 1 * mxy' = mxx' + mxy'
// y11' = 1 * myx' + 1 * myy' = myx' + myy'
double mxx = tx.getMxx();
double mxy = tx.getMxy();
double myx = tx.getMyx();
double myy = tx.getMyy();
// Computed translated translation components
final double mxt = (x0 * mxx + y0 * mxy + tx.getMxt());
final double myt = (x0 * myx + y0 * myy + tx.getMyt());
// Scale non-translation components by w/h
mxx *= x1;
mxy *= y1;
myx *= x1;
myy *= y1;
x0 = (Math.min(Math.min(0,mxx),Math.min(mxy,mxx+mxy)))+mxt;
y0 = (Math.min(Math.min(0,myx),Math.min(myy,myx+myy)))+myt;
x1 = (Math.max(Math.max(0,mxx),Math.max(mxy,mxx+mxy)))+mxt;
y1 = (Math.max(Math.max(0,myx),Math.max(myy,myx+myy)))+myt;
}
x0 -= _dpad;
y0 -= _dpad;
x1 += _dpad;
y1 += _dpad;
bounds = bounds.deriveWithNewBounds((float)x0, (float)y0, 0.0f,
(float)x1, (float)y1, 0.0f);
return bounds;
}
BaseBounds computeShapeBounds(BaseBounds bounds, BaseTransform tx,
com.sun.javafx.geom.Shape s)
{
// empty mode means no bounds!
if (mode == NGShape.Mode.EMPTY) {
return bounds.makeEmpty();
}
float[] bbox = {
Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY,
Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY,
};
boolean includeShape = (mode != NGShape.Mode.STROKE);
boolean includeStroke = (mode != NGShape.Mode.FILL);
if (includeStroke && (getStrokeType() == StrokeType.INSIDE)) {
includeShape = true;
includeStroke = false;
}
if (includeStroke) {
final StrokeType type = getStrokeType();
double sw = Utils.clampMin(getStrokeWidth(), MIN_STROKE_WIDTH);
StrokeLineCap cap = getStrokeLineCap();
StrokeLineJoin join = convertLineJoin(getStrokeLineJoin());
float miterlimit =
(float) Utils.clampMin(getStrokeMiterLimit(), MIN_STROKE_MITER_LIMIT);
// Note that we ignore dashing for computing bounds and testing
// point containment, both to save time in bounds calculations
// and so that animated dashing does not keep perturbing the bounds...
Toolkit.getToolkit().accumulateStrokeBounds(
s,
bbox, type, sw,
cap, join, miterlimit, tx);
// Account for "minimum pen size" by expanding by 0.5 device
// pixels all around...
bbox[0] -= 0.5;
bbox[1] -= 0.5;
bbox[2] += 0.5;
bbox[3] += 0.5;
} else if (includeShape) {
com.sun.javafx.geom.Shape.accumulate(bbox, s, tx);
}
if (bbox[2] < bbox[0] || bbox[3] < bbox[1]) {
// They are probably +/-INFINITY which would yield NaN if subtracted
// Let's just return a "safe" empty bbox..
return bounds.makeEmpty();
}
bounds = bounds.deriveWithNewBounds(bbox[0], bbox[1], 0.0f,
bbox[2], bbox[3], 0.0f);
return bounds;
}
boolean computeShapeContains(double localX, double localY,
com.sun.javafx.geom.Shape s) {
if (mode == NGShape.Mode.EMPTY) {
return false;
}
boolean includeShape = (mode != NGShape.Mode.STROKE);
boolean includeStroke = (mode != NGShape.Mode.FILL);
if (includeStroke && includeShape &&
(getStrokeType() == StrokeType.INSIDE))
{
includeStroke = false;
}
if (includeShape) {
if (s.contains((float)localX, (float)localY)) {
return true;
}
}
if (includeStroke) {
StrokeType type = getStrokeType();
double sw = Utils.clampMin(getStrokeWidth(), MIN_STROKE_WIDTH);
StrokeLineCap cap = getStrokeLineCap();
StrokeLineJoin join = convertLineJoin(getStrokeLineJoin());
float miterlimit =
(float) Utils.clampMin(getStrokeMiterLimit(), MIN_STROKE_MITER_LIMIT);
// Note that we ignore dashing for computing bounds and testing
// point containment, both to save time in bounds calculations
// and so that animated dashing does not keep perturbing the bounds...
return Toolkit.getToolkit().strokeContains(s, localX, localY,
type, sw, cap,
join, miterlimit);
}
return false;
}
private boolean strokeAttributesDirty = true;
private StrokeAttributes strokeAttributes;
private StrokeAttributes getStrokeAttributes() {
if (strokeAttributes == null) {
strokeAttributes = new StrokeAttributes();
}
return strokeAttributes;
}
private boolean hasStrokeDashArray() {
return (strokeAttributes != null) && strokeAttributes.hasDashArray();
}
private static float[] toPGDashArray(final List dashArray) {
final int size = dashArray.size();
final float[] pgDashArray = new float[size];
for (int i = 0; i < size; i++) {
pgDashArray[i] = dashArray.get(i).floatValue();
}
return pgDashArray;
}
private static final StrokeType DEFAULT_STROKE_TYPE = StrokeType.CENTERED;
private static final double DEFAULT_STROKE_WIDTH = 1.0;
private static final StrokeLineJoin DEFAULT_STROKE_LINE_JOIN =
StrokeLineJoin.MITER;
private static final StrokeLineCap DEFAULT_STROKE_LINE_CAP =
StrokeLineCap.SQUARE;
private static final double DEFAULT_STROKE_MITER_LIMIT = 10.0;
private static final double DEFAULT_STROKE_DASH_OFFSET = 0;
private static final float[] DEFAULT_PG_STROKE_DASH_ARRAY = new float[0];
private final class StrokeAttributes {
private ObjectProperty type;
private DoubleProperty width;
private ObjectProperty lineJoin;
private ObjectProperty lineCap;
private DoubleProperty miterLimit;
private DoubleProperty dashOffset;
private ObservableList dashArray;
public final StrokeType getType() {
return (type == null) ? DEFAULT_STROKE_TYPE : type.get();
}
public final ObjectProperty typeProperty() {
if (type == null) {
type = new StyleableObjectProperty(DEFAULT_STROKE_TYPE) {
@Override
public void invalidated() {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_TYPE);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_TYPE;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "strokeType";
}
};
}
return type;
}
public double getWidth() {
return (width == null) ? DEFAULT_STROKE_WIDTH : width.get();
}
public final DoubleProperty widthProperty() {
if (width == null) {
width = new StyleableDoubleProperty(DEFAULT_STROKE_WIDTH) {
@Override
public void invalidated() {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_WIDTH);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_WIDTH;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "strokeWidth";
}
};
}
return width;
}
public StrokeLineJoin getLineJoin() {
return (lineJoin == null) ? DEFAULT_STROKE_LINE_JOIN
: lineJoin.get();
}
public final ObjectProperty lineJoinProperty() {
if (lineJoin == null) {
lineJoin = new StyleableObjectProperty(
DEFAULT_STROKE_LINE_JOIN) {
@Override
public void invalidated() {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_LINE_JOIN);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_LINE_JOIN;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "strokeLineJoin";
}
};
}
return lineJoin;
}
public StrokeLineCap getLineCap() {
return (lineCap == null) ? DEFAULT_STROKE_LINE_CAP
: lineCap.get();
}
public final ObjectProperty lineCapProperty() {
if (lineCap == null) {
lineCap = new StyleableObjectProperty(
DEFAULT_STROKE_LINE_CAP) {
@Override
public void invalidated() {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_LINE_CAP);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_LINE_CAP;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "strokeLineCap";
}
};
}
return lineCap;
}
public double getMiterLimit() {
return (miterLimit == null) ? DEFAULT_STROKE_MITER_LIMIT
: miterLimit.get();
}
public final DoubleProperty miterLimitProperty() {
if (miterLimit == null) {
miterLimit = new StyleableDoubleProperty(
DEFAULT_STROKE_MITER_LIMIT) {
@Override
public void invalidated() {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_MITER_LIMIT);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_MITER_LIMIT;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "strokeMiterLimit";
}
};
}
return miterLimit;
}
public double getDashOffset() {
return (dashOffset == null) ? DEFAULT_STROKE_DASH_OFFSET
: dashOffset.get();
}
public final DoubleProperty dashOffsetProperty() {
if (dashOffset == null) {
dashOffset = new StyleableDoubleProperty(
DEFAULT_STROKE_DASH_OFFSET) {
@Override
public void invalidated() {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_DASH_OFFSET);
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_DASH_OFFSET;
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "strokeDashOffset";
}
};
}
return dashOffset;
}
// TODO: Need to handle set from css - should clear array and add all.
public ObservableList dashArrayProperty() {
if (dashArray == null) {
dashArray = new TrackableObservableList() {
@Override
protected void onChanged(Change c) {
StrokeAttributes.this.invalidated(
StyleableProperties.STROKE_DASH_ARRAY);
}
};
}
return dashArray;
}
private ObjectProperty cssDashArray = null;
private ObjectProperty cssDashArrayProperty() {
if (cssDashArray == null) {
cssDashArray = new StyleableObjectProperty()
{
@Override
public void set(Number[] v) {
ObservableList list = dashArrayProperty();
list.clear();
if (v != null && v.length > 0) {
for (int n=0; n list = dashArrayProperty();
return list.toArray(new Double[list.size()]);
}
@Override
public Object getBean() {
return Shape.this;
}
@Override
public String getName() {
return "cssDashArray";
}
@Override
public CssMetaData getCssMetaData() {
return StyleableProperties.STROKE_DASH_ARRAY;
}
};
}
return cssDashArray;
}
public boolean canSetType() {
return (type == null) || !type.isBound();
}
public boolean canSetWidth() {
return (width == null) || !width.isBound();
}
public boolean canSetLineJoin() {
return (lineJoin == null) || !lineJoin.isBound();
}
public boolean canSetLineCap() {
return (lineCap == null) || !lineCap.isBound();
}
public boolean canSetMiterLimit() {
return (miterLimit == null) || !miterLimit.isBound();
}
public boolean canSetDashOffset() {
return (dashOffset == null) || !dashOffset.isBound();
}
public boolean hasDashArray() {
return (dashArray != null);
}
private void invalidated(final CssMetaData propertyCssKey) {
NodeHelper.markDirty(Shape.this, DirtyBits.SHAPE_STROKEATTRS);
strokeAttributesDirty = true;
if (propertyCssKey != StyleableProperties.STROKE_DASH_OFFSET) {
// all stroke attributes change geometry except for the
// stroke dash offset
NodeHelper.geomChanged(Shape.this);
}
}
}
// PENDING_DOC_REVIEW
/**
* Returns a new {@code Shape} which is created as a union of the specified
* input shapes.
*
* The operation works with geometric areas occupied by the input shapes.
* For a single {@code Shape} such area includes the area occupied by the
* fill if the shape has a non-null fill and the area occupied by the stroke
* if the shape has a non-null stroke. So the area is empty for a shape
* with {@code null} stroke and {@code null} fill. The area of an input
* shape considered by the operation is independent on the type and
* configuration of the paint used for fill or stroke. Before the final
* operation the areas of the input shapes are transformed to the parent
* coordinate space of their respective topmost parent nodes.
*
* The resulting shape will include areas that were contained in any of the
* input shapes.
shape1 + shape2 = result
+----------------+ +----------------+ +----------------+
|################| |################| |################|
|############## | | ##############| |################|
|############ | | ############| |################|
|########## | | ##########| |################|
|######## | | ########| |################|
|###### | | ######| |###### ######|
|#### | | ####| |#### ####|
|## | | ##| |## ##|
+----------------+ +----------------+ +----------------+
* @param shape1 the first shape
* @param shape2 the second shape
* @return the created {@code Shape}
*/
public static Shape union(final Shape shape1, final Shape shape2) {
final Area result = shape1.getTransformedArea();
result.add(shape2.getTransformedArea());
return createFromGeomShape(result);
}
// PENDING_DOC_REVIEW
/**
* Returns a new {@code Shape} which is created by subtracting the specified
* second shape from the first shape.
*
* The operation works with geometric areas occupied by the input shapes.
* For a single {@code Shape} such area includes the area occupied by the
* fill if the shape has a non-null fill and the area occupied by the stroke
* if the shape has a non-null stroke. So the area is empty for a shape
* with {@code null} stroke and {@code null} fill. The area of an input
* shape considered by the operation is independent on the type and
* configuration of the paint used for fill or stroke. Before the final
* operation the areas of the input shapes are transformed to the parent
* coordinate space of their respective topmost parent nodes.
*
* The resulting shape will include areas that were contained only in the
* first shape and not in the second shape.
shape1 - shape2 = result
+----------------+ +----------------+ +----------------+
|################| |################| | |
|############## | | ##############| |## |
|############ | | ############| |#### |
|########## | | ##########| |###### |
|######## | | ########| |######## |
|###### | | ######| |###### |
|#### | | ####| |#### |
|## | | ##| |## |
+----------------+ +----------------+ +----------------+
* @param shape1 the first shape
* @param shape2 the second shape
* @return the created {@code Shape}
*/
public static Shape subtract(final Shape shape1, final Shape shape2) {
final Area result = shape1.getTransformedArea();
result.subtract(shape2.getTransformedArea());
return createFromGeomShape(result);
}
// PENDING_DOC_REVIEW
/**
* Returns a new {@code Shape} which is created as an intersection of the
* specified input shapes.
*
* The operation works with geometric areas occupied by the input shapes.
* For a single {@code Shape} such area includes the area occupied by the
* fill if the shape has a non-null fill and the area occupied by the stroke
* if the shape has a non-null stroke. So the area is empty for a shape
* with {@code null} stroke and {@code null} fill. The area of an input
* shape considered by the operation is independent on the type and
* configuration of the paint used for fill or stroke. Before the final
* operation the areas of the input shapes are transformed to the parent
* coordinate space of their respective topmost parent nodes.
*
* The resulting shape will include only areas that were contained in both
* of the input shapes.
shape1 + shape2 = result
+----------------+ +----------------+ +----------------+
|################| |################| |################|
|############## | | ##############| | ############ |
|############ | | ############| | ######## |
|########## | | ##########| | #### |
|######## | | ########| | |
|###### | | ######| | |
|#### | | ####| | |
|## | | ##| | |
+----------------+ +----------------+ +----------------+
* @param shape1 the first shape
* @param shape2 the second shape
* @return the created {@code Shape}
*/
public static Shape intersect(final Shape shape1, final Shape shape2) {
final Area result = shape1.getTransformedArea();
result.intersect(shape2.getTransformedArea());
return createFromGeomShape(result);
}
private Area getTransformedArea() {
return getTransformedArea(calculateNodeToSceneTransform(this));
}
private Area getTransformedArea(final BaseTransform transform) {
if (mode == NGShape.Mode.EMPTY) {
return new Area();
}
final com.sun.javafx.geom.Shape fillShape = ShapeHelper.configShape(this);
if ((mode == NGShape.Mode.FILL)
|| (mode == NGShape.Mode.STROKE_FILL)
&& (getStrokeType() == StrokeType.INSIDE)) {
return createTransformedArea(fillShape, transform);
}
final StrokeType strokeType = getStrokeType();
final double strokeWidth =
Utils.clampMin(getStrokeWidth(), MIN_STROKE_WIDTH);
final StrokeLineCap strokeLineCap = getStrokeLineCap();
final StrokeLineJoin strokeLineJoin = convertLineJoin(getStrokeLineJoin());
final float strokeMiterLimit =
(float) Utils.clampMin(getStrokeMiterLimit(),
MIN_STROKE_MITER_LIMIT);
final float[] dashArray =
(hasStrokeDashArray())
? toPGDashArray(getStrokeDashArray())
: DEFAULT_PG_STROKE_DASH_ARRAY;
final com.sun.javafx.geom.Shape strokeShape =
Toolkit.getToolkit().createStrokedShape(
fillShape, strokeType, strokeWidth, strokeLineCap,
strokeLineJoin, strokeMiterLimit,
dashArray, (float) getStrokeDashOffset());
if (mode == NGShape.Mode.STROKE) {
return createTransformedArea(strokeShape, transform);
}
// fill and stroke
final Area combinedArea = new Area(fillShape);
combinedArea.add(new Area(strokeShape));
return createTransformedArea(combinedArea, transform);
}
private static BaseTransform calculateNodeToSceneTransform(Node node) {
final Affine3D cumulativeTransformation = new Affine3D();
do {
cumulativeTransformation.preConcatenate(
NodeHelper.getLeafTransform(node));
node = node.getParent();
} while (node != null);
return cumulativeTransformation;
}
private static Area createTransformedArea(
final com.sun.javafx.geom.Shape geomShape,
final BaseTransform transform) {
return transform.isIdentity()
? new Area(geomShape)
: new Area(geomShape.getPathIterator(transform));
}
private static Path createFromGeomShape(
final com.sun.javafx.geom.Shape geomShape) {
final Path path = new Path();
final ObservableList elements = path.getElements();
final PathIterator iterator = geomShape.getPathIterator(null);
final float coords[] = new float[6];
while (!iterator.isDone()) {
final int segmentType = iterator.currentSegment(coords);
switch (segmentType) {
case PathIterator.SEG_MOVETO:
elements.add(new MoveTo(coords[0], coords[1]));
break;
case PathIterator.SEG_LINETO:
elements.add(new LineTo(coords[0], coords[1]));
break;
case PathIterator.SEG_QUADTO:
elements.add(new QuadCurveTo(coords[0], coords[1],
coords[2], coords[3]));
break;
case PathIterator.SEG_CUBICTO:
elements.add(new CubicCurveTo(coords[0], coords[1],
coords[2], coords[3],
coords[4], coords[5]));
break;
case PathIterator.SEG_CLOSE:
elements.add(new ClosePath());
break;
}
iterator.next();
}
path.setFillRule((iterator.getWindingRule()
== PathIterator.WIND_EVEN_ODD)
? FillRule.EVEN_ODD
: FillRule.NON_ZERO);
path.setFill(Color.BLACK);
path.setStroke(null);
return path;
}
}