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/*
* Copyright (c) 2010, 2016, 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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* questions.
*/
package javafx.scene.shape;
import com.sun.javafx.geom.Path2D;
import com.sun.javafx.scene.shape.QuadCurveToHelper;
import com.sun.javafx.sg.prism.NGPath;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.DoublePropertyBase;
/**
* Creates a curved path element, defined by two new points,
* by drawing a Quadratic Bézier curve that intersects both the current coordinates
* and the specified coordinates {@code (x, y)},
* using the specified point {@code (controlX, controlY)}
* as a Bézier control point.
* All coordinates are specified in double precision.
*
* For more information on path elements see the {@link Path} and
* {@link PathElement} classes.
*
*
Example:
*
import javafx.scene.shape.*;
Path path = new Path();
MoveTo moveTo = new MoveTo();
moveTo.setX(0.0f);
moveTo.setY(50.0f);
QuadCurveTo quadTo = new QuadCurveTo();
quadTo.setControlX(25.0f);
quadTo.setControlY(0.0f);
quadTo.setX(50.0f);
quadTo.setY(50.0f);
path.getElements().add(moveTo);
path.getElements().add(cubicTo);
* @since JavaFX 2.0
*/
public class QuadCurveTo extends PathElement {
static {
QuadCurveToHelper.setQuadCurveToAccessor(new QuadCurveToHelper.QuadCurveToAccessor() {
@Override
public void doAddTo(PathElement pathElement, Path2D path) {
((QuadCurveTo) pathElement).doAddTo(path);
}
});
}
/**
* Creates an empty instance of QuadCurveTo.
*/
public QuadCurveTo() {
QuadCurveToHelper.initHelper(this);
}
/**
* Creates a new instance of QuadCurveTo.
* @param controlX the X coordinate of the quadratic control point
* @param controlY the Y coordinate of the quadratic control point
* @param x the X coordinate of the final end point
* @param y the Y coordinate of the final end point
*/
public QuadCurveTo(double controlX, double controlY, double x, double y) {
setControlX(controlX);
setControlY(controlY);
setX(x);
setY(y);
QuadCurveToHelper.initHelper(this);
}
/**
* Defines the X coordinate of the quadratic control point.
*
* @defaultValue 0.0
*/
private DoubleProperty controlX = new DoublePropertyBase() {
@Override
public void invalidated() {
u();
}
@Override
public Object getBean() {
return QuadCurveTo.this;
}
@Override
public String getName() {
return "controlX";
}
};
public final void setControlX(double value) {
controlX.set(value);
}
public final double getControlX() {
return controlX.get();
}
public final DoubleProperty controlXProperty() {
return controlX;
}
/**
* Defines the Y coordinate of the quadratic control point.
*
* @defaultValue 0.0
*/
private DoubleProperty controlY = new DoublePropertyBase() {
@Override
public void invalidated() {
u();
}
@Override
public Object getBean() {
return QuadCurveTo.this;
}
@Override
public String getName() {
return "controlY";
}
};
public final void setControlY(double value) {
controlY.set(value);
}
public final double getControlY() {
return controlY.get();
}
public final DoubleProperty controlYProperty() {
return controlY;
}
/**
* Defines the X coordinate of the final end point.
*
* @defaultValue 0.0
*/
private DoubleProperty x;
public final void setX(double value) {
if (x != null || value != 0.0) {
xProperty().set(value);
}
}
public final double getX() {
return x == null ? 0.0 : x.get();
}
public final DoubleProperty xProperty() {
if (x == null) {
x = new DoublePropertyBase() {
@Override
public void invalidated() {
u();
}
@Override
public Object getBean() {
return QuadCurveTo.this;
}
@Override
public String getName() {
return "x";
}
};
}
return x;
}
/**
* Defines the Y coordinate of the final end point.
*
* @defaultValue 0.0
*/
private DoubleProperty y;
public final void setY(double value) {
if (y != null || value != 0.0) {
yProperty().set(value);
}
}
public final double getY() {
return y == null ? 0.0 : y.get();
}
public final DoubleProperty yProperty() {
if (y == null) {
y = new DoublePropertyBase() {
@Override
public void invalidated() {
u();
}
@Override
public Object getBean() {
return QuadCurveTo.this;
}
@Override
public String getName() {
return "y";
}
};
}
return y;
}
@Override
void addTo(NGPath pgPath) {
if (isAbsolute()) {
pgPath.addQuadTo(
(float)getControlX(),
(float)getControlY(),
(float)getX(),
(float)getY());
} else {
final double dx = pgPath.getCurrentX();
final double dy = pgPath.getCurrentY();
pgPath.addQuadTo(
(float)(getControlX()+dx),
(float)(getControlY()+dy),
(float)(getX()+dx),
(float)(getY()+dy));
}
}
/*
* Note: This method MUST only be called via its accessor method.
*/
private void doAddTo(Path2D path) {
if (isAbsolute()) {
path.quadTo(
(float)getControlX(),
(float)getControlY(),
(float)getX(),
(float)getY());
} else {
final double dx = path.getCurrentX();
final double dy = path.getCurrentY();
path.quadTo(
(float)(getControlX()+dx),
(float)(getControlY()+dy),
(float)(getX()+dx),
(float)(getY()+dy));
}
}
/**
* Returns a string representation of this {@code CubicCurveTo} object.
* @return a string representation of this {@code CubicCurveTo} object.
*/
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("CubicCurveTo[");
sb.append("x=").append(getX());
sb.append(", y=").append(getY());
sb.append(", controlX=").append(getControlX());
sb.append(", controlY=").append(getControlY());
return sb.append("]").toString();
}
}