org.simantics.district.network.ui/src/org/simantics/district/network/ui/nodes/DistrictNetworkHoverInfoNode.java

   1 package org.simantics.district.network.ui.nodes;
   2
   3 import java.awt.Color;
   4 import java.awt.Font;
   5 import java.awt.Graphics2D;
   6 import java.awt.geom.AffineTransform;
   7 import java.awt.geom.Point2D;
   8 import java.awt.geom.Rectangle2D;
   9 import java.util.Comparator;
  10 import java.util.List;
  11 import java.util.Optional;
  12 import java.util.concurrent.atomic.AtomicReference;
  13
  14 import org.simantics.district.network.ui.styles.DistrictNetworkHoverInfoStyle;
  15 import org.simantics.maps.MapScalingTransform;
  16 import org.simantics.scenegraph.ParentNode;
  17 import org.simantics.scenegraph.g2d.G2DNode;
  18 import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
  19 import org.simantics.scenegraph.utils.DPIUtil;
  20 import org.simantics.scenegraph.utils.NodeUtil;
  21 import org.simantics.scl.runtime.Lists;
  22 import org.simantics.scl.runtime.tuple.Tuple3;
  23
  24 public class DistrictNetworkHoverInfoNode extends G2DNode implements HoverSensitiveNode, DeferredNode {
  25
  26         private static final Font FONT = new Font("Tahoma", Font.PLAIN, (int)(DPIUtil.upscale(9) * MapScalingTransform.getScaleY() + 0.5));
  27
  28         private static final long serialVersionUID = 1L;
  29
  30         public static final String NODE_KEY = "DISTRICT_NETWORK_HOVER_INFO";
  31
  32         private static final int W1 = 50;
  33         private static final int W2 = 30;
  34         private static final int PAD = 5;
  35
  36         private List<Tuple3> labels;
  37
  38         @SuppressWarnings("unused")
  39         private Point2D origin;
  40
  41         private boolean hover = false;
  42
  43         private Point2D mousePosition;
  44
  45         private static AtomicReference<DistrictNetworkHoverInfoNode> activeNode = new AtomicReference<>();
  46
  47         @Override
  48         public void render(Graphics2D g) {
  49                 if (!hover || activeNode.get() != this)
  50                         return;
  51
  52                 ParentNode<?> root = (ParentNode<?>) NodeUtil.getNearestParentOfType(this, RTreeNode.class);
  53                 DeferredRenderingNode deferred = root != null ? (DeferredRenderingNode) root.getNode(DistrictNetworkHoverInfoStyle.HOVER_INFO_DEFERRED) : null;
  54                 if (deferred != null)
  55                         deferred.deferNode(g.getTransform(), this);
  56                 else
  57                         renderDeferred(g);
  58         }
  59
  60         @Override
  61         public void renderDeferred(Graphics2D g) {
  62                 AffineTransform ot = g.getTransform();
  63                 Font of = g.getFont();
  64                 doRender(g);
  65                 g.setFont(of);
  66                 g.setTransform(ot);
  67         }
  68
  69         private void doRender(Graphics2D g) {
  70                 g.transform(MapScalingTransform.INVERSE);
  71                 g.translate(mousePosition.getX(), mousePosition.getY());
  72                 //g.translate(origin.getX(), origin.getY());
  73                 double scale = 1.5 / g.getTransform().getScaleX();
  74                 g.scale(scale, scale);
  75
  76                 g.setFont(FONT);
  77                 double rowHeight = g.getFontMetrics().getHeight() * 1.1;
  78
  79         // let's calculate the max width
  80         Optional<Integer> max = labels.stream().map(t -> g.getFontMetrics().stringWidth((String) t.c2)).max(Comparator.naturalOrder());
  81         int width = max.orElse(10);
  82         g.setColor(Color.WHITE);
  83         int totalHeight = (int)Math.round(rowHeight * labels.size());
  84         g.fillRect(-(W1 + PAD + W2 + 5), -(totalHeight + (int)Math.round(rowHeight)), (W1 + PAD + W2 + width + 10), totalHeight + 5);
  85
  86                 g.setColor(Color.BLACK);
  87
  88                 for (Tuple3 t : labels) {
  89                         g.translate(0.f, -rowHeight);
  90
  91                         if (t.c0 != null) {
  92                                 g.drawString((String) t.c0, -(W1 + PAD + W2), 0.f);
  93                         }
  94
  95                         if (t.c1 != null) {
  96                                 int width1 = g.getFontMetrics().stringWidth((String) t.c1);
  97                                 g.drawString((String) t.c1, - width1, 0.f);
  98                         }
  99
 100                         if (t.c2 != null) {
 101                                 g.drawString((String) t.c2, PAD, 0.f);
 102                         }
 103                 }
 104         }
 105
 106         @Override
 107         public Rectangle2D getBoundsInLocal() {
 108                 return null;
 109         }
 110
 111         @SuppressWarnings("unchecked")
 112         public void setLabels(List<Tuple3> list) {
 113                 this.labels = Lists.reverse(list);
 114         }
 115
 116         public void setOrigin(Point2D origin) {
 117                 this.origin = origin;
 118         }
 119
 120         @Override
 121         public boolean hover(boolean hover, boolean isConnectionTool) {
 122                 hover = hover && activeNode.updateAndGet(current -> current == null ? this : current) == this;
 123                 boolean changed = hover != this.hover;
 124                 this.hover = hover;
 125
 126                 if (changed) {
 127                         if (!hover) activeNode.updateAndGet(current -> current == this ? null : current);
 128                         repaint();
 129                 }
 130
 131                 return changed;
 132         }
 133
 134         @Override
 135         public void setMousePosition(Point2D p) {
 136                 mousePosition = p;
 137         }
 138
 139         @Override
 140         public void delete() {
 141                 super.delete();
 142                 activeNode.getAndUpdate(current -> current == this ? null : current);
 143         }
 144 }