com.sun.javafx.css.TransitionDefinitionConverter Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* 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
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.javafx.css;
import javafx.animation.Interpolator;
import javafx.css.CssMetaData;
import javafx.css.ParsedValue;
import javafx.css.Size;
import javafx.css.StyleConverter;
import javafx.css.Styleable;
import javafx.scene.text.Font;
import javafx.util.Duration;
import java.util.Arrays;
import java.util.Map;
/**
* Converts an array of parsed values to a {@link TransitionDefinition}.
* The array must contain four elements, all of which may be {@code null}:
*
* - property: {@code ParsedValue}
*
- duration: {@code ParsedValue}
*
- delay: {@code ParsedValue}
*
- timingFunction: {@code ParsedValue}
*
*/
@SuppressWarnings("rawtypes")
public final class TransitionDefinitionConverter extends StyleConverter {
public static final String PROPERTY_ALL = "all";
private static class Holder {
static final TransitionDefinitionConverter INSTANCE = new TransitionDefinitionConverter();
static final SequenceConverter SEQUENCE_INSTANCE = new SequenceConverter();
}
public static StyleConverter getInstance() {
return Holder.INSTANCE;
}
private TransitionDefinitionConverter() {}
@Override
@SuppressWarnings("unchecked")
public TransitionDefinition convert(ParsedValue value, Font font) {
ParsedValue[] values = value.getValue();
ParsedValue parsedProperty = values[0];
ParsedValue, Duration> parsedDuration = values[1];
ParsedValue, Duration> parsedDelay = values[2];
ParsedValue parsedInterpolator = values[3];
String propertyName = parsedProperty != null ? parsedProperty.convert(null) : PROPERTY_ALL;
Duration duration = parsedDuration != null ? parsedDuration.convert(null) : Duration.ZERO;
Duration delay = parsedDelay != null ? parsedDelay.convert(null) : Duration.ZERO;
Interpolator interpolator = parsedInterpolator != null ?
parsedInterpolator.convert(null) : InterpolatorConverter.CSS_EASE;
return new TransitionDefinition(
propertyName.intern(), duration.lessThan(Duration.ZERO) ? Duration.ZERO : duration, delay, interpolator);
}
/**
* Converts a sequence of parsed values to an array of {@link TransitionDefinition} instances.
*/
public static final class SequenceConverter
extends StyleConverter[], TransitionDefinition[]> {
private static final TransitionDefinition[] EMPTY_TRANSITION = new TransitionDefinition[0];
private static final String[] EMPTY_STRING = new String[0];
private static final Duration[] EMPTY_DURATION = new Duration[0];
private static final Interpolator[] EMPTY_INTERPOLATOR = new Interpolator[0];
public static SequenceConverter getInstance() {
return Holder.SEQUENCE_INSTANCE;
}
private SequenceConverter() {}
@Override
public TransitionDefinition[] convert(Map, Object> convertedValues) {
String[] properties = EMPTY_STRING;
Duration[] durations = EMPTY_DURATION;
Duration[] delays = EMPTY_DURATION;
Interpolator[] timingFunctions = EMPTY_INTERPOLATOR;
for (Map.Entry, Object> entry : convertedValues.entrySet()) {
switch (entry.getKey().getProperty()) {
case "transition-property" -> properties = (String[]) entry.getValue();
case "transition-duration" -> durations = (Duration[]) entry.getValue();
case "transition-delay" -> delays = (Duration[]) entry.getValue();
case "transition-timing-function" -> timingFunctions = (Interpolator[]) entry.getValue();
}
}
if (properties.length == 0 || durations.length == 0) {
return EMPTY_TRANSITION;
}
// The length of the 'transition-property' list determines the number of transitions in the sequence.
TransitionDefinition[] transitions = new TransitionDefinition[properties.length];
// If any of the remaining sub-properties doesn't have enough values, missing values are filled in
// by repeating the list of values until we have enough values for the sequence.
for (int i = 0; i < transitions.length; ++i) {
Interpolator timingFunction = timingFunctions.length == 0 ?
InterpolatorConverter.CSS_EASE : timingFunctions[i % timingFunctions.length];
Duration duration = durations[i % durations.length];
Duration delay = delays.length == 0 ? Duration.ZERO : delays[i % delays.length];
transitions[i] = new TransitionDefinition(properties[i], duration, delay, timingFunction);
}
return transitions;
}
@Override
public TransitionDefinition[] convert(
ParsedValue[], TransitionDefinition[]> value,
Font font) {
ParsedValue[] layers = value.getValue();
if (layers.length == 0) {
return EMPTY_TRANSITION;
}
TransitionDefinition[] transitions = new TransitionDefinition[layers.length];
int numTransitions = 0;
for (ParsedValue layer : layers) {
TransitionDefinition transition = TransitionDefinitionConverter.getInstance().convert(layer, font);
if (transition != null) {
transitions[numTransitions++] = transition;
}
}
return numTransitions == transitions.length ?
transitions : Arrays.copyOf(transitions, numTransitions);
}
}
}