javafx.css.converter.InsetsConverter Maven / Gradle / Ivy
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*
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javafx.css.converter;
import javafx.css.Size;
import javafx.css.ParsedValue;
import javafx.css.StyleConverter;
import javafx.geometry.Insets;
import javafx.scene.text.Font;
/**
* Converter to convert a parsed value array of 1 to 4 size components to an {@code Insets}.
* The size values are interpreted as
* top, right, bottom, left.
* If only top is given, that value is used on all sides.
* If there is only top and right, then bottom is set to top and left is set to right.
* If top, right and bottom are given, then left is set to right.
*
* @since 9
*/
public final class InsetsConverter extends StyleConverter {
// lazy, thread-safe instatiation
private static class Holder {
static final InsetsConverter INSTANCE = new InsetsConverter();
static final SequenceConverter SEQUENCE_INSTANCE = new SequenceConverter();
}
/**
* Gets the {@code InsetsConverter} instance.
* @return the {@code InsetsConverter} instance
*/
public static StyleConverter getInstance() {
return Holder.INSTANCE;
}
private InsetsConverter() {
super();
}
@Override
public Insets convert(ParsedValue value, Font font) {
ParsedValue[] sides = value.getValue();
double top = ((Size)sides[0].convert(font)).pixels(font);
double right = (sides.length > 1) ? ((Size)sides[1].convert(font)).pixels(font) : top;
double bottom = (sides.length > 2) ? ((Size)sides[2].convert(font)).pixels(font) : top;
double left = (sides.length > 3) ? ((Size)sides[3].convert(font)).pixels(font) : right;
return new Insets(top, right, bottom, left);
}
@Override
public String toString() {
return "InsetsConverter";
}
/**
* Converter to convert an array of parsed values, each of which is an array
* of 1 to 4 size components, to an array of {@code Insets} objects.
* @since 9
*/
public static final class SequenceConverter extends StyleConverter[], Insets[]> {
/**
* Gets the {@code SequenceConverter} instance.
* @return the {@code SequenceConverter} instance
*/
public static SequenceConverter getInstance() {
return Holder.SEQUENCE_INSTANCE;
}
private SequenceConverter() {
super();
}
@Override
public Insets[] convert(ParsedValue[], Insets[]> value, Font font) {
ParsedValue[] layers = value.getValue();
Insets[] insets = new Insets[layers.length];
for (int layer = 0; layer < layers.length; layer++) {
insets[layer] = InsetsConverter.getInstance().convert(layers[layer], font);
}
return insets;
}
@Override
public String toString() {
return "InsetsSequenceConverter";
}
}
}