/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2016 Neil C Smith.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details.
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*
*
* Linking this work statically or dynamically with other modules is making a
* combined work based on this work. Thus, the terms and conditions of the GNU
* General Public License cover the whole combination.
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* to link this work with independent modules to produce an executable,
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* Please visit http://neilcsmith.net if you need additional information or
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*
* This class is derived from code in NetBeans Visual Library.
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package net.neilcsmith.praxis.live.graph;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.netbeans.api.visual.action.ActionFactory;
import org.netbeans.api.visual.action.AlignWithMoveDecorator;
import org.netbeans.api.visual.action.AlignWithWidgetCollector;
import org.netbeans.api.visual.action.MoveProvider;
import org.netbeans.api.visual.action.MoveStrategy;
import org.netbeans.api.visual.widget.ConnectionWidget;
import org.netbeans.api.visual.widget.LayerWidget;
import org.netbeans.api.visual.widget.Scene;
import org.netbeans.api.visual.widget.Widget;
/**
*
* @author Neil C Smith (http://neilcsmith.net)
*/
class PraxisMoveProvider extends AlignWithSupport implements MoveProvider, MoveStrategy {
private final Map<Widget, Point> locations;
private final MoveProvider defaultProvider;
private final PraxisGraphScene<?> scene;
private final boolean outerBounds = false;
PraxisMoveProvider(PraxisGraphScene<?> scene,
LayerWidget interactionLayer) {
super(new NodeCollector(scene),
interactionLayer,
new Decorator());
this.scene = scene;
locations = new HashMap<Widget, Point>();
defaultProvider = ActionFactory.createDefaultMoveProvider();
}
@Override
public void movementStarted(Widget widget) {
show();
}
@Override
public void movementFinished(Widget widget) {
hide();
locations.clear();
}
@Override
public Point getOriginalLocation(Widget widget) {
locations.put(widget, defaultProvider.getOriginalLocation(widget));
for (Object obj : scene.getSelectedObjects()) {
if (!scene.isNode(obj)) {
continue;
}
Widget additional = scene.findWidget(obj);
if (additional == widget) {
continue;
}
locations.put(additional, defaultProvider.getOriginalLocation(additional));
}
return defaultProvider.getOriginalLocation(widget);
}
@Override
public void setNewLocation(Widget widget, Point location) {
defaultProvider.setNewLocation(widget, location);
Point primary = locations.get(widget);
if (primary == null || locations.size() == 1) {
return;
}
int dx = location.x - primary.x;
int dy = location.y - primary.y;
for (Map.Entry<Widget, Point> loc : locations.entrySet()) {
Widget additional = loc.getKey();
if (additional == widget) {
continue;
}
Point pt = new Point(loc.getValue());
pt.translate(dx, dy);
defaultProvider.setNewLocation(additional, pt);
}
}
@Override
public Point locationSuggested(Widget widget, Point originalLocation, Point suggestedLocation) {
Point widgetLocation = widget.getLocation();
Rectangle widgetBounds = outerBounds ? widget.getBounds() : widget.getClientArea();
Rectangle bounds = widget.convertLocalToScene(widgetBounds);
bounds.translate(suggestedLocation.x - widgetLocation.x, suggestedLocation.y - widgetLocation.y);
Insets insets = widget.getBorder().getInsets();
if (!outerBounds) {
suggestedLocation.x += insets.left;
suggestedLocation.y += insets.top;
}
Point point = super.locationSuggested(widget, bounds, widget.getParentWidget().convertLocalToScene(suggestedLocation), true, true, true, true);
if (!outerBounds) {
point.x -= insets.left;
point.y -= insets.top;
}
return widget.getParentWidget().convertSceneToLocal(point);
}
private static class Decorator implements AlignWithMoveDecorator {
private static final BasicStroke STROKE = new BasicStroke(1.0f, BasicStroke.JOIN_BEVEL,
BasicStroke.CAP_BUTT, 5.0f, new float[]{2.0f, 2.0f}, 0.0f);
private static final Color COLOR = new Color(127, 127, 127);
@Override
public ConnectionWidget createLineWidget(Scene scene) {
ConnectionWidget widget = new ConnectionWidget(scene);
widget.setStroke(STROKE);
widget.setForeground(COLOR);
return widget;
}
}
static class NodeCollector implements AlignWithWidgetCollector {
private final PraxisGraphScene<?> scene;
public NodeCollector(PraxisGraphScene<?> scene) {
this.scene = scene;
}
@Override
public List<Rectangle> getRegions(Widget movingWidget) {
List<Rectangle> regions = new ArrayList<>();
List<Object> nodes = new ArrayList<>(scene.getNodes());
nodes.removeAll(scene.getSelectedObjects());
for (Object node : nodes) {
Widget widget = scene.findWidget(node);
if (widget != null && widget != movingWidget) {
regions.add(widget.convertLocalToScene(widget.getClientArea()));
}
}
return regions;
}
}
}