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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2008, 2013, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.scenario.effect;
import com.sun.scenario.effect.impl.state.ZoomRadialBlurState;
import com.sun.javafx.geom.DirtyRegionContainer;
import com.sun.javafx.geom.DirtyRegionPool;
import com.sun.javafx.geom.Rectangle;
import com.sun.javafx.geom.transform.BaseTransform;
/**
* Zoom radial blur effect with a configurable center and radius of the kernel.
*/
public class ZoomRadialBlur extends CoreEffect {
private int r;
private float centerX;
private float centerY;
private final ZoomRadialBlurState state = new ZoomRadialBlurState(this);
/**
* Constructs a new {@code ZoomRadialBlur} effect with the default
* radius (1), using the defalt input for source data.
* This is a shorthand equivalent to:
*
* new ZoomRadialBlur(1, DefaultInput)
*
*/
public ZoomRadialBlur() {
this(1);
}
/**
* Constructs a new {@code ZoomRadialBlur} effect with the given radius,
* using the default input for source data.
* This is a shorthand equivalent to:
*
* new ZoomRadialBlur(radius, DefaultInput)
*
*
* @param radius the radius of the kernel
* @throws IllegalArgumentException if {@code radius} is outside the
* allowable range
*/
public ZoomRadialBlur(int radius) {
this(radius, DefaultInput);
}
/**
* Constructs a new {@code ZoomRadialBlur} effect with the given radius.
*
* @param radius of ZoomRadialBlur
* @param input the single input {@code Effect}
* @throws IllegalArgumentException if {@code radius} is outside the
* allowable range
*/
public ZoomRadialBlur(int radius, Effect input) {
super(input);
setRadius(radius);
}
@Override
Object getState() {
return state;
}
/**
* Returns the input for this {@code Effect}.
*
* @return the input for this {@code Effect}
*/
public final Effect getInput() {
return getInputs().get(0);
}
/**
* Sets the input for this {@code Effect} to a specific
* {@code Effect} or to the default input if {@code input} is
* {@code null}.
*
* @param input the input for this {@code Effect}
*/
public void setInput(Effect input) {
setInput(0, input);
}
/**
* Returns the radius of the effect kernel.
*
* @return the radius of the effect kernel
*/
public int getRadius() {
return r;
}
/**
* Sets the radius of the effect kernel.
*
* Min: 1
* Max: 64
* Default: 1
* Identity: n/a
*
*
* @param radius the radius of the effect kernel
* @throws IllegalArgumentException if {@code radius} is outside the
* allowable range
*/
public void setRadius(int radius) {
if (radius < 1 || radius > 64) {
throw new IllegalArgumentException("Radius must be in the range [1,64]");
}
int old = this.r;
this.r = radius;
state.invalidateDeltas();
updatePeer();
}
/**
* Updates the peer "key" for the current radius.
*/
private void updatePeer() {
int psize = 4 + r - (r%4);
updatePeerKey("ZoomRadialBlur", psize);
}
/**
* Returns the X coordinate of the center point of this effect.
*
* @return the X coordinate of the center point
*/
public float getCenterX() {
return centerX;
}
/**
* Sets the X coordinate of the center point of this effect.
*
* @param centerX the X coordinate of the center point
*/
public void setCenterX(float centerX) {
float old = this.centerX;
this.centerX = centerX;
}
/**
* Returns the Y coordinate of the center point of this effect.
*
* @return the Y coordinate of the center point
*/
public float getCenterY() {
return centerY;
}
/**
* Sets the Y coordinate of the center point of this effect.
*
* @param centerY the Y coordinate of the center point
*/
public void setCenterY(float centerY) {
float old = this.centerY;
this.centerY = centerY;
}
@Override
public ImageData filterImageDatas(FilterContext fctx,
BaseTransform transform,
Rectangle outputClip,
ImageData... inputs)
{
Rectangle bnd = inputs[0].getUntransformedBounds();
state.updateDeltas(1f/bnd.width, 1f/bnd.height);
return super.filterImageDatas(fctx, transform, outputClip, inputs);
}
@Override
public boolean operatesInUserSpace() {
return true;
}
@Override
protected Rectangle getInputClip(int inputIndex,
BaseTransform transform,
Rectangle outputClip)
{
// This effect does not appear to expand bounds as it operates,
// the blur may zoom "outward", but only to the edge of the
// original image...
return outputClip;
}
@Override
public boolean reducesOpaquePixels() {
return true;
}
@Override
public DirtyRegionContainer getDirtyRegions(Effect defaultInput, DirtyRegionPool regionPool) {
Effect di = getDefaultedInput(0, defaultInput);
DirtyRegionContainer drc = di.getDirtyRegions(defaultInput, regionPool);
int radius = getRadius();
drc.grow(radius, radius);
return drc;
}
}