javafx.scene.layout.BackgroundConverter Maven / Gradle / Ivy
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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.scene.layout;
import com.sun.javafx.css.StyleManager;
import com.sun.javafx.css.SubPropertyConverter;
import com.sun.javafx.scene.layout.region.RepeatStruct;
import java.util.List;
import java.util.Map;
import javafx.css.CssMetaData;
import javafx.css.ParsedValue;
import javafx.css.StyleConverter;
import javafx.css.Styleable;
import javafx.geometry.Insets;
import javafx.scene.image.Image;
import javafx.scene.paint.Paint;
/**
* Converts the CSS for -fx-background items into a Background.
*/
class BackgroundConverter extends StyleConverter
implements SubPropertyConverter {
static final StyleConverter INSTANCE = new BackgroundConverter();
/**
* {@inheritDoc}
*
* @throws NullPointerException if {@code convertedValues} is {@code null}
*/
@Override
public Background convert(Map,Object> convertedValues) {
final Paint[] fills = (Paint[]) convertedValues.get(Background.BACKGROUND_COLOR);
final Object[] images = (Object[]) convertedValues.get(Background.BACKGROUND_IMAGE);
final boolean hasFills = fills != null && fills.length > 0;
final boolean hasImages = images != null && images.length > 0;
// If there are neither background fills nor images, then there is nothing for us to construct.
if (!hasFills && !hasImages) return null;
// Iterate over all of the fills, and create BackgroundFill objects for each.
BackgroundFill[] backgroundFills = null;
if (hasFills) {
backgroundFills = new BackgroundFill[fills.length];
Object tmp = convertedValues.get(Background.BACKGROUND_INSETS);
final Insets[] insets = tmp == null ? new Insets[0] : (Insets[]) tmp;
tmp = convertedValues.get(Background.BACKGROUND_RADIUS);
final CornerRadii[] radii = tmp == null ? new CornerRadii[0] : (CornerRadii[]) tmp;
final int lastInsetsIndex = insets.length - 1;
final int lastRadiiIndex = radii.length - 1;
for (int i=0; i 0 ? insets[i <= lastInsetsIndex ? i : lastInsetsIndex] : Insets.EMPTY;
CornerRadii ra = radii.length > 0 ? radii[i <= lastRadiiIndex ? i : lastRadiiIndex] : CornerRadii.EMPTY;
backgroundFills[i] = new BackgroundFill(fills[i], ra, in);
}
}
// Iterate over all of the image, and create BackgroundImage objects for each.
BackgroundImage[] backgroundImages = null;
if (hasImages) {
// TODO convert image urls into image objects!
backgroundImages = new BackgroundImage[images.length];
Object tmp = convertedValues.get(Background.BACKGROUND_REPEAT);
final RepeatStruct[] repeats = tmp == null ? new RepeatStruct[0] : (RepeatStruct[]) tmp;
tmp = convertedValues.get(Background.BACKGROUND_POSITION);
final BackgroundPosition[] positions = tmp == null ? new BackgroundPosition[0] : (BackgroundPosition[]) tmp;
tmp = convertedValues.get(Background.BACKGROUND_SIZE);
final BackgroundSize[] sizes = tmp == null ? new BackgroundSize[0] : (BackgroundSize[]) tmp;
final int lastRepeatIndex = repeats.length - 1;
final int lastPositionIndex = positions.length - 1;
final int lastSizeIndex = sizes.length - 1;
for (int i = 0; i < images.length; i++) {
// RT-21335: skip background and border images whose image url is null
if (images[i] == null) continue;
final Image image;
// The images are either URLs (when they come from CSS) or the actual Image
// instances (when they come from the convertBack operation).
if (images[i] instanceof String url) {
image = StyleManager.getInstance().getCachedImage(url);
} else if (images[i] instanceof Image img) {
image = img;
} else {
throw new IllegalArgumentException("Unexpected type: " + images[i].getClass().getName());
}
if (image == null) continue;
final RepeatStruct repeat = (repeats.length > 0) ?
repeats[i <= lastRepeatIndex ? i : lastRepeatIndex] : null; // min
final BackgroundPosition position = (positions.length > 0) ?
positions[i <= lastPositionIndex ? i : lastPositionIndex] : null; // min
final BackgroundSize size = (sizes.length > 0) ?
sizes[i <= lastSizeIndex ? i : lastSizeIndex] : null; // min
backgroundImages[i] = new BackgroundImage(image,
repeat == null ? null : repeat.repeatX,
repeat == null ? null : repeat.repeatY,
position, size);
}
}
// Give the background fills and background images to a newly constructed BackgroundConverter,
// and return it.
return new Background(backgroundFills, backgroundImages);
}
/**
* {@inheritDoc}
*
* @throws NullPointerException if {@code value} is {@code null}
*/
@Override
public Map, Object> convertBack(Background value) {
List fills = value.getFills();
int fillsCount = fills.size();
Paint[] backgroundColor = new Paint[fillsCount];
CornerRadii[] backgroundRadius = new CornerRadii[fillsCount];
Insets[] backgroundInsets = new Insets[fillsCount];
for (int i = 0; i < fillsCount; ++i) {
BackgroundFill fill = fills.get(i);
backgroundColor[i] = fill.getFill();
backgroundRadius[i] = fill.getRadii();
backgroundInsets[i] = fill.getInsets();
}
List backgroundImages = value.getImages();
int imageCount = backgroundImages.size();
Image[] images = new Image[imageCount];
BackgroundPosition[] backgroundPosition = new BackgroundPosition[imageCount];
RepeatStruct[] backgroundRepeat = new RepeatStruct[imageCount];
BackgroundSize[] backgroundSize = new BackgroundSize[imageCount];
for (int i = 0; i < imageCount; ++i) {
BackgroundImage image = backgroundImages.get(i);
images[i] = image.getImage();
backgroundPosition[i] = image.getPosition();
backgroundRepeat[i] = new RepeatStruct(image.getRepeatX(), image.getRepeatY());
backgroundSize[i] = image.getSize();
}
return Map.of(
Background.BACKGROUND_COLOR, backgroundColor,
Background.BACKGROUND_IMAGE, images,
Background.BACKGROUND_INSETS, backgroundInsets,
Background.BACKGROUND_POSITION, backgroundPosition,
Background.BACKGROUND_RADIUS, backgroundRadius,
Background.BACKGROUND_REPEAT, backgroundRepeat,
Background.BACKGROUND_SIZE, backgroundSize);
}
}