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/*
* Copyright (c) 2010, 2022, 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.effect;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.DoublePropertyBase;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.ObjectPropertyBase;
import javafx.scene.Node;
import javafx.scene.paint.Color;
import com.sun.javafx.util.Utils;
import com.sun.javafx.effect.EffectDirtyBits;
import com.sun.javafx.geom.BaseBounds;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.javafx.scene.BoundsAccessor;
import com.sun.javafx.tk.Toolkit;
/**
* An effect which creates a monochrome duplicate of an input with
* blurry edges.
* This effect is primarily used along with its default black color for
* purposes of combining it with the original to create a shadow.
* It can also be used with a light color and combined with an original
* to create a glow effect.
* The {@link DropShadow} effect is a utility effect which automatically
* combines this {@code Shadow} effect with an original graphic for ease
* of adding a shadow to an existing scene graph {@code Node} with a
* single effect.
* @since JavaFX 2.0
*/
public class Shadow extends Effect {
private boolean changeIsLocal;
/**
* Creates a new instance of Shadow with default parameters.
*/
public Shadow() {}
/**
* Creates a new instance of Shadow with specified radius and color.
* @param radius the radius of the shadow blur kernel
* @param color the shadow {@code Color}
* @since JavaFX 2.1
*/
public Shadow(double radius, Color color) {
setRadius(radius);
setColor(color);
}
/**
* Creates a new instance of Shadow with the specified blurType, color,
* radius.
* @param blurType the algorithm used to blur the shadow
* @param color the shadow {@code Color}
* @param radius the radius of the shadow blur kernel
* @since JavaFX 2.1
*/
public Shadow(BlurType blurType, Color color, double radius) {
setBlurType(blurType);
setColor(color);
setRadius(radius);
}
@Override
com.sun.scenario.effect.GeneralShadow createPeer() {
return new com.sun.scenario.effect.GeneralShadow();
}
/**
* The input for this {@code Effect}.
* If set to {@code null}, or left unspecified, a graphical image of
* the {@code Node} to which the {@code Effect} is attached will be
* used as the input.
* @defaultValue null
*/
private ObjectProperty input;
public final void setInput(Effect value) {
inputProperty().set(value);
}
public final Effect getInput() {
return input == null ? null : input.get();
}
public final ObjectProperty inputProperty() {
if (input == null) {
input = new EffectInputProperty("input");
}
return input;
}
@Override
boolean checkChainContains(Effect e) {
Effect localInput = getInput();
if (localInput == null)
return false;
if (localInput == e)
return true;
return localInput.checkChainContains(e);
}
/**
* The radius of the shadow blur kernel.
* This attribute controls the distance that the shadow is spread
* to each side of the source pixels.
* Setting the radius is equivalent to setting both the {@code width}
* and {@code height} attributes to a value of {@code (2 * radius + 1)}.
*
* @defaultValue 10.0
*/
private DoubleProperty radius;
public final void setRadius(double value) {
radiusProperty().set(value);
}
public final double getRadius() {
return radius == null ? 10 : radius.get();
}
public final DoubleProperty radiusProperty() {
if (radius == null) {
radius = new DoublePropertyBase(10) {
@Override
public void invalidated() {
// gettter here is necessary to make the property valid
double localRadius = getRadius();
if (!changeIsLocal) {
changeIsLocal = true;
updateRadius(localRadius);
changeIsLocal = false;
markDirty(EffectDirtyBits.EFFECT_DIRTY);
effectBoundsChanged();
}
}
@Override
public Object getBean() {
return Shadow.this;
}
@Override
public String getName() {
return "radius";
}
};
}
return radius;
}
private void updateRadius(double value) {
double newdim = (value * 2 + 1);
if (width != null && width.isBound()) {
if (height == null || !height.isBound()) {
setHeight(newdim * 2 - getWidth());
}
} else if (height != null && height.isBound()) {
setWidth(newdim * 2 - getHeight());
} else {
setWidth(newdim);
setHeight(newdim);
}
}
/**
* The horizontal size of the shadow blur kernel.
* This attribute controls the horizontal size of the total area over
* which the shadow of a single pixel is distributed by the blur algorithm.
* Values less than {@code 1.0} are not distributed beyond the original
* pixel and so have no blurring effect on the shadow.
*
* @defaultValue 21.0
*/
private DoubleProperty width;
public final void setWidth(double value) {
widthProperty().set(value);
}
public final double getWidth() {
return width == null ? 21 : width.get();
}
public final DoubleProperty widthProperty() {
if (width == null) {
width = new DoublePropertyBase(21) {
@Override
public void invalidated() {
// gettter here is necessary to make the property valid
double localWidth = getWidth();
if (!changeIsLocal) {
changeIsLocal = true;
updateWidth(localWidth);
changeIsLocal = false;
markDirty(EffectDirtyBits.EFFECT_DIRTY);
effectBoundsChanged();
}
}
@Override
public Object getBean() {
return Shadow.this;
}
@Override
public String getName() {
return "width";
}
};
}
return width;
}
private void updateWidth(double value) {
if (radius == null || !radius.isBound()) {
double newrad = ((value + getHeight()) / 2);
newrad = ((newrad - 1) / 2);
if (newrad < 0) {
newrad = 0;
}
setRadius(newrad);
} else {
// special case when radius is bound
if (height == null || !height.isBound()) {
double newdim = (getRadius() * 2 + 1);
setHeight(newdim * 2 - value);
}
}
}
/**
* The vertical size of the shadow blur kernel.
* This attribute controls the vertical size of the total area over
* which the shadow of a single pixel is distributed by the blur algorithm.
* Values less than {@code 1.0} are not distributed beyond the original
* pixel and so have no blurring effect on the shadow.
*
