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EntityRelationMappingEditor
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Made color dependent on referenced attribute.

This commit is contained in:
Andrew Lalis 2021-10-27 17:42:01 +02:00
parent fa87c32591
commit f33e3d2069
2 changed files with 8 additions and 4 deletions
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2
src/main/java/nl/andrewlalis/erme/model/Attribute.java
View File

@ -51,7 +51,7 @@ public class Attribute {
@Override
public int hashCode() {
return Objects.hash(type, name);
return Objects.hash(type, relation, name);
}
@Override

10
src/main/java/nl/andrewlalis/erme/view/view_models/MappingModelViewModel.java
View File

@ -7,6 +7,8 @@ import nl.andrewlalis.erme.model.MappingModel;
import nl.andrewlalis.erme.model.Relation;
import java.awt.*;
import java.awt.color.ColorSpace;
import java.util.Random;
/**
* View model for rendering an entire {@code MappingModel} object.
@ -30,17 +32,19 @@ public class MappingModelViewModel implements ViewModel {
private void visualizeReferences(Graphics2D g) {
Graphics2D g2 = (Graphics2D) g.create();
g2.setColor(Color.BLUE);
Stroke dashedStroke = new BasicStroke(2, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 0, new float[]{5}, 0);
g2.setStroke(dashedStroke);
for (Relation r : this.model.getRelations()) {
for (Attribute a : r.getAttributes()) {
if (a instanceof ForeignKeyAttribute) {
ForeignKeyAttribute fk = (ForeignKeyAttribute) a;
// Generate a random HSB color for the line, seeded using the referenced attribute's hash code.
Random random = new Random(fk.getReference().hashCode());
g2.setColor(Color.getHSBColor(random.nextFloat(), 1.0f, 0.8f));
Rectangle sourceBounds = fk.getViewModel().getBounds(g);
Rectangle targetBounds = fk.getReference().getViewModel().getBounds(g);
Point sourcePoint = new Point(sourceBounds.x + sourceBounds.width / 2, sourceBounds.y);
Point targetPoint = new Point(targetBounds.x + targetBounds.width / 2, targetBounds.y + targetBounds.height);
Point sourcePoint = new Point(sourceBounds.x + sourceBounds.width / 2, sourceBounds.y + 3 * targetBounds.height / 4);
Point targetPoint = new Point(targetBounds.x + targetBounds.width / 2, targetBounds.y + 3 * targetBounds.height / 4);
g2.drawLine(sourcePoint.x, sourcePoint.y, targetPoint.x, targetPoint.y);
}
}