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/*
* Copyright (c) 2011, 2014, 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 com.sun.javafx.webkit.prism;
import com.sun.prism.paint.RadialGradient;
import com.sun.prism.paint.Stop;
import com.sun.webkit.graphics.WCGradient;
import com.sun.webkit.graphics.WCPoint;
import com.sun.javafx.geom.transform.BaseTransform;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
final class WCRadialGradient extends WCGradient {
static final Comparator COMPARATOR = (s1, s2) -> {
float o1 = s1.getOffset();
float o2 = s2.getOffset();
if (o1 < o2) {
return -1;
}
if (o1 > o2) {
return 1;
}
return 0;
};
private final boolean reverse;
private final WCPoint p1;
private final WCPoint p2;
private final float r1over;
private final float r1;
private final float r2;
private final List stops = new ArrayList();
WCRadialGradient(WCPoint p1, float r1, WCPoint p2, float r2) {
this.reverse = r1 < r2;
this.p1 = this.reverse ? p2 : p1;
this.p2 = this.reverse ? p1 : p2;
this.r1 = this.reverse ? r2 : r1;
this.r2 = this.reverse ? r1 : r2;
this.r1over = (this.r1 > 0.0f)
? 1.0f / this.r1
: 0.0f;
}
@Override
protected void addStop(int argb, float offset) {
if (this.reverse) {
offset = 1.0f - offset;
}
offset = 1.0f - offset + offset * this.r2 * this.r1over;
this.stops.add(new Stop(WCGraphicsPrismContext.createColor(argb), offset));
}
public RadialGradient getPlatformGradient() {
Collections.sort(this.stops, COMPARATOR);
float dx = this.p2.getX() - this.p1.getX();
float dy = this.p2.getY() - this.p1.getY();
return new RadialGradient(
this.p1.getX(),
this.p1.getY(),
(float) (Math.atan2(dy, dx) * 180 / Math.PI),
(float) Math.sqrt(dx * dx + dy * dy) * this.r1over,
this.r1,
BaseTransform.IDENTITY_TRANSFORM,
isProportional(),
getSpreadMethod() - 1, // convert webkit to prism
this.stops);
}
@Override
public String toString() {
return toString(this, this.p1, this.p2, this.r1, this.stops);
}
static String toString(WCGradient g, WCPoint p1, WCPoint p2, Float radius, List stops) {
StringBuilder sb = new StringBuilder(g.getClass().getSimpleName());
switch (g.getSpreadMethod()) {
case PAD:
sb.append("[spreadMethod=PAD");
break;
case REFLECT:
sb.append("[spreadMethod=REFLECT");
break;
case REPEAT:
sb.append("[spreadMethod=REPEAT");
break;
}
sb.append(", proportional=").append(g.isProportional());
if (radius != null) {
sb.append(", radius=").append(radius);
}
sb.append(", x1=").append(p1.getX());
sb.append(", y1=").append(p1.getY());
sb.append(", x2=").append(p2.getX());
sb.append(", y2=").append(p2.getY());
sb.append(", stops=");
for (int i = 0; i < stops.size(); i++) {
sb.append(i == 0 ? "[" : ", ");
sb.append(stops.get(i).getOffset()).append(":").append(stops.get(i).getColor());
}
return sb.append("]]").toString();
}
}
