javafx.css.converter.PaintConverter Maven / Gradle / Ivy
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/*
* Copyright (c) 2011, 2021, 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
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*/
package javafx.css.converter;
import javafx.css.Size;
import javafx.css.SizeUnits;
import com.sun.javafx.css.StyleManager;
import javafx.css.ParsedValue;
import javafx.css.StyleConverter;
import javafx.scene.image.Image;
import javafx.scene.paint.CycleMethod;
import javafx.scene.paint.ImagePattern;
import javafx.scene.paint.LinearGradient;
import javafx.scene.paint.Paint;
import javafx.scene.paint.RadialGradient;
import javafx.scene.paint.Stop;
import javafx.scene.text.Font;
/**
* Converter to convert a parsed representation of a {@code Paint} to a {@code Paint}.
* @since 9
*/
public final class PaintConverter extends StyleConverter, Paint> {
// lazy, thread-safe instantiation
private static class Holder {
static final PaintConverter INSTANCE = new PaintConverter();
static final SequenceConverter SEQUENCE_INSTANCE = new SequenceConverter();
static final LinearGradientConverter LINEAR_GRADIENT_INSTANCE = new LinearGradientConverter();
static final ImagePatternConverter IMAGE_PATTERN_INSTANCE = new ImagePatternConverter();
static final RepeatingImagePatternConverter REPEATING_IMAGE_PATTERN_INSTANCE = new RepeatingImagePatternConverter();
static final RadialGradientConverter RADIAL_GRADIENT_INSTANCE = new RadialGradientConverter();
}
/**
* Gets the {@code PaintConverter} instance.
* @return the {@code PaintConverter} instance
*/
public static StyleConverter, Paint> getInstance() {
return Holder.INSTANCE;
}
private PaintConverter() {
super();
}
@Override
public Paint convert(ParsedValue, Paint> value, Font font) {
Object obj = value.getValue();
if (obj instanceof Paint) {
return (Paint) obj;
}
return value.getValue().convert(font);
}
@Override
public String toString() {
return "PaintConverter";
}
/**
* Converter to convert a sequence of parsed values to an array of {@code Paint} objects.
* @since 9
*/
public static final class SequenceConverter extends StyleConverter[], Paint[]> {
/**
* Gets the {@code SequenceConverter} instance.
* @return the {@code SequenceConverter} instance
*/
public static SequenceConverter getInstance() {
return Holder.SEQUENCE_INSTANCE;
}
private SequenceConverter() {
super();
}
@Override
public Paint[] convert(ParsedValue[], Paint[]> value, Font font) {
ParsedValue[] values = value.getValue();
Paint[] paints = new Paint[values.length];
for (int p = 0; p < values.length; p++) {
paints[p] = values[p].convert(font);
}
return paints;
}
@Override
public String toString() {
return "Paint.SequenceConverter";
}
}
/**
* Converter to convert linear gradient parsed values to a {@code Paint} object.
* @since 9
*/
public static final class LinearGradientConverter extends StyleConverter {
/**
* Gets the {@code LinearGradientConverter} instance.
* @return the {@code LinearGradientConverter} instance
*/
public static LinearGradientConverter getInstance() {
return Holder.LINEAR_GRADIENT_INSTANCE;
}
private LinearGradientConverter() {
super();
}
@Override
public Paint convert(ParsedValue value, Font font) {
Paint paint = super.getCachedValue(value);
if (paint != null) return paint;
ParsedValue[] values = value.getValue();
int v = 0;
final Size startX = (Size) values[v++].convert(font);
final Size startY = (Size) values[v++].convert(font);
final Size endX = (Size) values[v++].convert(font);
final Size endY = (Size) values[v++].convert(font);
boolean proportional = startX.getUnits() == SizeUnits.PERCENT && startX.getUnits() == startY.getUnits() && startX.getUnits() == endX.getUnits() && startX.getUnits() == endY.getUnits();
final CycleMethod cycleMethod = (CycleMethod) values[v++].convert(font);
final Stop[] stops = new Stop[values.length - v];
for (int s = v; s < values.length; s++) {
stops[s - v] = (Stop) values[s].convert(font);
}
paint = new LinearGradient(startX.pixels(font), startY.pixels(font), endX.pixels(font), endY.pixels(font), proportional, cycleMethod, stops);
super.cacheValue(value, paint);
return paint;
}
@Override
public String toString() {
return "LinearGradientConverter";
}
}
/**
* Converter to convert image pattern parsed values to a {@code Paint} object.
* @since 9
*/
public static final class ImagePatternConverter extends StyleConverter {
/**
* Gets the {@code ImagePatternConverter} instance.
* @return the {@code ImagePatternConverter} instance
*/
public static ImagePatternConverter getInstance() {
return Holder.IMAGE_PATTERN_INSTANCE;
}
private ImagePatternConverter() {
super();
}
@Override
public Paint convert(ParsedValue value, Font font) {
Paint paint = super.getCachedValue(value);
if (paint != null) return paint;
ParsedValue[] values = value.getValue();
ParsedValue urlParsedValue = values[0];
String url = (String) urlParsedValue.convert(font);
if (values.length == 1) {
return new ImagePattern(StyleManager.getInstance().getCachedImage(url));
}
Size x = (Size) values[1].convert(font);
Size y = (Size) values[2].convert(font);
Size w = (Size) values[3].convert(font);
Size h = (Size) values[4].convert(font);
boolean p = values.length < 6 ? true : (Boolean) values[5].getValue();
paint = new ImagePattern(
new Image(url),
x.getValue(),
y.getValue(),
w.getValue(),
h.getValue(), p);
super.cacheValue(value, paint);
return paint;
}
@Override
public String toString() {
return "ImagePatternConverter";
}
}
/**
* Converter to convert repeating image pattern parsed values to a {@code Paint} object.
* @since 9
*/
public static final class RepeatingImagePatternConverter extends StyleConverter {
/**
* Gets the {@code RepeatingImagePatternConverter} instance.
* @return the {@code RepeatingImagePatternConverter} instance
*/
public static RepeatingImagePatternConverter getInstance() {
return Holder.REPEATING_IMAGE_PATTERN_INSTANCE;
}
private RepeatingImagePatternConverter() {
super();
}
@Override
public Paint convert(ParsedValue value, Font font) {
Paint paint = super.getCachedValue(value);
if (paint != null) return paint;
ParsedValue[] values = value.getValue();
ParsedValue url = values[0];
String u = (String) url.convert(font);
// If u is null, then we failed to locate the image associated with the url specified in the CSS file.
if (u == null) return null;
final Image image = new Image(u);
paint = new ImagePattern(image, 0, 0, image.getWidth(), image.getHeight(), false);
super.cacheValue(value, paint);
return paint;
}
@Override
public String toString() {
return "RepeatingImagePatternConverter";
}
}
/**
* Converter to convert radial gradient parsed values to a {@code Paint} object.
* @since 9
*/
public static final class RadialGradientConverter extends StyleConverter {
/**
* Gets the {@code RadialGradientConverter} instance.
* @return the {@code RadialGradientConverter} instance
*/
public static RadialGradientConverter getInstance() {
return Holder.RADIAL_GRADIENT_INSTANCE;
}
private RadialGradientConverter() {
super();
}
@Override
public Paint convert(ParsedValue value, Font font) {
Paint paint = super.getCachedValue(value);
if (paint != null) return paint;
final ParsedValue[] values = value.getValue();
int v = 0;
// First four values are for startX, startY, endX, endY
// and are type ParsedValue,Double>. To figure out
// proportional, we need to get to the Size. getValue() will
// return ParsedValue, so getValue().convert(font) will
// give us the size.
final Size focusAngle = values[v++] != null ? (Size) values[v-1].convert(font) : null;
final Size focusDistance = values[v++] != null ? (Size) values[v-1].convert(font) : null;
final Size centerX = values[v++] != null ? (Size) values[v-1].convert(font) : null;
final Size centerY = values[v++] != null ? (Size) values[v-1].convert(font) : null;
final Size radius = (Size) values[v++].convert(font);
boolean proportional = radius.getUnits().equals(SizeUnits.PERCENT);
boolean unitsAgree = centerX != null ? proportional == centerX.getUnits().equals(SizeUnits.PERCENT) : true;
unitsAgree = unitsAgree && centerY != null ? proportional == centerY.getUnits().equals(SizeUnits.PERCENT) : true;
if (!unitsAgree) {
throw new IllegalArgumentException("units do not agree");
}
final CycleMethod cycleMethod = (CycleMethod) values[v++].convert(font);
final Stop[] stops = new Stop[values.length - v];
for (int s = v; s < values.length; s++) {
stops[s - v] = (Stop) values[s].convert(font);
}
//If the focus-angle is a percentage, the value is mutiplied
// by 360, modulo 360.
double fa = 0;
if (focusAngle != null) {
fa = focusAngle.pixels(font);
if (focusAngle.getUnits().equals(SizeUnits.PERCENT)) {
fa = (fa * 360) % 360;
}
}
paint = new RadialGradient(fa, focusDistance != null ? focusDistance.pixels() : 0, centerX != null ? centerX.pixels() : 0, centerY != null ? centerY.pixels() : 0, radius != null ? radius.pixels() : 1, proportional, cycleMethod, stops);
super.cacheValue(value, paint);
return paint;
}
@Override
public String toString() {
return "RadialGradientConverter";
}
}
}