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.maps.MapScalingTransform;
  15 import org.simantics.scenegraph.g2d.G2DNode;
  16 import org.simantics.scenegraph.utils.DPIUtil;
  17 import org.simantics.scl.runtime.Lists;
  18 import org.simantics.scl.runtime.tuple.Tuple3;
  19
  20 public class DistrictNetworkHoverInfoNode extends G2DNode implements HoverSensitiveNode {
  21
  22         private static final Font FONT = new Font("Tahoma", Font.PLAIN, (int)(DPIUtil.upscale(9) * MapScalingTransform.getScaleY() + 0.5));
  23
  24         private static final long serialVersionUID = 1L;
  25
  26         public static final String NODE_KEY = "DISTRICT_NETWORK_HOVER_INFO";
  27
  28         private static final int W1 = 50;
  29         private static final int W2 = 30;
  30         private static final int PAD = 5;
  31
  32         private List<Tuple3> labels;
  33
  34         private Point2D origin;
  35
  36         private boolean hover = false;
  37
  38         private static AtomicReference<DistrictNetworkHoverInfoNode> activeNode = new AtomicReference<>();
  39
  40         @Override
  41         public void render(Graphics2D g) {
  42                 if (!hover || activeNode.get() != this)
  43                         return;
  44
  45                 AffineTransform ot = g.getTransform();
  46                 Font of = g.getFont();
  47                 doRender(g);
  48                 g.setFont(of);
  49                 g.setTransform(ot);
  50         }
  51
  52         private void doRender(Graphics2D g) {
  53                 g.translate(origin.getX(), origin.getY());
  54                 double scale = 1.5 / g.getTransform().getScaleX();
  55                 g.scale(scale, scale);
  56
  57                 g.setFont(FONT);
  58                 double rowHeight = g.getFontMetrics().getHeight() * 1.1;
  59
  60         // let's calculate the max width
  61         Optional<Integer> max = labels.stream().map(t -> g.getFontMetrics().stringWidth((String) t.c2)).max(Comparator.naturalOrder());
  62         int width = max.orElse(10);
  63         g.setColor(Color.WHITE);
  64         int totalHeight = (int)Math.round(rowHeight * labels.size());
  65         g.fillRect(-(W1 + PAD + W2 + 5), -(totalHeight + (int)Math.round(rowHeight)), (W1 + PAD + W2 + width + 10), totalHeight + 5);
  66
  67                 g.setColor(Color.BLACK);
  68
  69                 for (Tuple3 t : labels) {
  70                         g.translate(0.f, -rowHeight);
  71
  72                         if (t.c0 != null) {
  73                                 g.drawString((String) t.c0, -(W1 + PAD + W2), 0.f);
  74                         }
  75
  76                         if (t.c1 != null) {
  77                                 int width1 = g.getFontMetrics().stringWidth((String) t.c1);
  78                                 g.drawString((String) t.c1, - width1, 0.f);
  79                         }
  80
  81                         if (t.c2 != null) {
  82                                 g.drawString((String) t.c2, PAD, 0.f);
  83                         }
  84                 }
  85         }
  86
  87         @Override
  88         public Rectangle2D getBoundsInLocal() {
  89                 return null;
  90         }
  91
  92         @SuppressWarnings("unchecked")
  93         public void setLabels(List<Tuple3> list) {
  94                 this.labels = Lists.reverse(list);
  95         }
  96
  97         public void setOrigin(Point2D origin) {
  98                 this.origin = origin;
  99         }
 100
 101         @Override
 102         public boolean hover(boolean hover, boolean isConnectionTool) {
 103                 hover = hover && activeNode.updateAndGet(current -> current == null ? this : current) == this;
 104                 boolean changed = hover != this.hover;
 105                 this.hover = hover;
 106
 107                 if (changed) {
 108                         if (!hover) activeNode.updateAndGet(current -> current == this ? null : current);
 109                         repaint();
 110                 }
 111
 112                 return changed;
 113         }
 114
 115         @Override
 116         public void delete() {
 117                 super.delete();
 118                 activeNode.getAndUpdate(current -> current == this ? null : current);
 119         }
 120 }