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package org.eclipse.wst.xml.vex.core.internal.layout;
import java.net.URL;
import org.eclipse.wst.xml.vex.core.internal.core.Image;
import org.eclipse.wst.xml.vex.core.internal.core.Point;
import org.eclipse.wst.xml.vex.core.internal.css.Styles;
import org.eclipse.wst.xml.vex.core.internal.dom.Element;
public class ImageBox extends AbstractInlineBox {
private final Image image;
public static ImageBox create(final Element element, final LayoutContext context, final int maxWidth) {
if (element == null)
return null;
final Styles styles = context.getStyleSheet().getStyles(element);
final URL imageUrl = context.resolveUrl(element.getBaseURI(), styles.getBackgroundImage());
if (imageUrl == null)
return null;
final Image image = context.getGraphics().getImage(imageUrl);
final Point imageDimensions = getImageDimensions(image, styles);
final int width = Math.min(imageDimensions.getX(), maxWidth);
final int height = scale(imageDimensions.getY(), imageDimensions.getX(), width);
final ImageBox result = new ImageBox(image);
result.setWidth(width);
result.setHeight(height);
return result;
}
private static Point getImageDimensions(final Image image, final Styles styles) {
int styleWidth = styles.getElementWidth().get(image.getWidth());
int styleHeight = styles.getElementHeight().get(image.getHeight());
if (styleWidth != 0 && styleHeight != 0)
return new Point(styleWidth, styleHeight);
if (styleWidth == 0 && styleHeight != 0)
return new Point(scale(image.getWidth(), image.getHeight(), styleHeight), styleHeight);
if (styleWidth != 0 && styleHeight == 0)
return new Point(styleWidth, scale(image.getHeight(), image.getWidth(), styleWidth));
return new Point(image.getWidth(), image.getHeight());
}
private static int scale(int opposite, int current, int scaled) {
return Math.round(1f * scaled / current * opposite);
}
public static ImageBox createWithHeight(final Element element, final LayoutContext context, final int maxHeight) {
if (element == null)
return null;
final URL imageUrl = context.resolveUrl(element.getBaseURI(), context.getStyleSheet().getStyles(element).getBackgroundImage());
if (imageUrl == null)
return null;
final Image image = context.getGraphics().getImage(imageUrl);
final int height = Math.min(image.getHeight(), maxHeight);
final int width = scale(image.getWidth(), image.getHeight(), height);
final ImageBox result = new ImageBox(image);
result.setWidth(width);
result.setHeight(height);
return result;
}
public ImageBox(final Image image) {
this.image = image;
setWidth(image.getWidth());
setHeight(image.getHeight());
}
@Override
public void paint(final LayoutContext context, final int x, final int y) {
if (skipPaint(context, x, y))
return;
context.getGraphics().drawImage(image, x, y, getWidth(), getHeight());
super.paint(context, x, y);
}
public int getBaseline() {
return 0;
}
@Override
public void alignOnBaseline(final int baseline) {
setY(0);
}
public boolean isEOL() {
return false;
}
public Pair split(final LayoutContext context, final int maxWidth, final boolean force) {
return new Pair(null, this);
}
}
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