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package cdc.ui.swing.icons;
import java.awt.Component;
import java.awt.Graphics;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import javax.swing.Icon;
import cdc.util.lang.Checks;
public class CompoundIcon implements Icon {
private final int width;
private final int height;
private final List parts = new ArrayList<>();
public static class Ref {
private final double x;
private final double y;
public Ref(double x,
double y) {
this.x = x;
this.y = y;
}
public final double getX() {
return x;
}
public final double getY() {
return y;
}
public final double getX(double width) {
return (width - 1.0) * x;
}
public final double getY(double height) {
return (height - 1.0) * y;
}
}
public static class Part {
private final Icon icon;
private final Ref ref0;
private final Ref ref1;
public Part(Icon icon,
Ref ref0,
Ref ref1) {
Checks.isNotNull(icon, "icon");
Checks.isNotNull(ref0, "ref0");
Checks.isNotNull(ref1, "ref1");
this.icon = icon;
this.ref0 = ref0;
this.ref1 = ref1;
}
public final Icon getIcon() {
return icon;
}
public final Ref getRef0() {
return ref0;
}
public final Ref getRef1() {
return ref1;
}
}
public CompoundIcon(int width,
int heght,
Part... parts) {
this.width = width;
this.height = heght;
for (final Part part : parts) {
this.parts.add(part);
}
}
public CompoundIcon(Icon icon,
int xmargin,
int ymargin,
Part... parts) {
Checks.isNotNull(icon, "icon");
this.width = icon.getIconWidth() + 2 * xmargin;
this.height = icon.getIconHeight() + 2 * ymargin;
this.parts.add(new Part(icon, new Ref(0.5, 0.5), new Ref(0.5, 0.5)));
for (final Part part : parts) {
this.parts.add(part);
}
}
public CompoundIcon(Icon icon,
int xmargin,
int ymargin,
Collection parts) {
Checks.isNotNull(icon, "icon");
this.width = icon.getIconWidth() + 2 * xmargin;
this.height = icon.getIconHeight() + 2 * ymargin;
this.parts.add(new Part(icon, new Ref(0.5, 0.5), new Ref(0.5, 0.5)));
for (final Part part : parts) {
this.parts.add(part);
}
}
private static int getMin(int size0,
double r0,
int size1,
double r1) {
return (int) (r0 * size0 - r1 * size1);
}
@Override
public void paintIcon(Component c,
Graphics g,
int x,
int y) {
for (final Part part : parts) {
final int dx = getMin(width, part.getRef0().getX(), part.getIcon().getIconWidth(), part.getRef1().getX());
final int dy = getMin(height, part.getRef0().getY(), part.getIcon().getIconHeight(), part.getRef1().getY());
part.getIcon().paintIcon(c, g, x + dx, y + dy);
}
}
@Override
public final int getIconWidth() {
return width;
}
@Override
public final int getIconHeight() {
return height;
}
}
