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

   1 package org.simantics.district.network.ui.nodes;
   2
   3 import java.awt.Color;
   4 import java.awt.Font;
   5 import java.awt.FontMetrics;
   6 import java.awt.Graphics2D;
   7 import java.awt.RenderingHints;
   8 import java.awt.geom.AffineTransform;
   9 import java.awt.geom.Point2D;
  10 import java.awt.geom.Rectangle2D;
  11
  12 import org.simantics.district.network.ui.styles.DistrictNetworkStaticInfoStyle;
  13 import org.simantics.scenegraph.ParentNode;
  14 import org.simantics.scenegraph.g2d.G2DNode;
  15 import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
  16 import org.simantics.scenegraph.utils.DPIUtil;
  17 import org.simantics.scenegraph.utils.NodeUtil;
  18
  19 public class DistrictNetworkStaticInfoNode extends G2DNode implements DeferredNode {
  20
  21         private static final long serialVersionUID = -1723122278582600873L;
  22
  23         private static final Font FONT = new Font(Font.SANS_SERIF, Font.PLAIN, DPIUtil.upscale(10));
  24
  25         public static final String NODE_KEY = "DISTRICT_NETWORK_STATIC_INFO";
  26
  27         String info = null;
  28         Point2D origin = new Point2D.Double();
  29         Point2D direction = new Point2D.Double();
  30
  31         private DistrictNetworkEdgeNode edgeNode = null;
  32
  33         private int prevZoomLevel = -1;
  34
  35         @Override
  36         public void render(Graphics2D g) {
  37                 ParentNode<?> root = (ParentNode<?>) NodeUtil.getNearestParentOfType(this, RTreeNode.class);
  38                 DeferredRenderingNode deferred = root != null ? (DeferredRenderingNode) root.getNode(DistrictNetworkStaticInfoStyle.STATIC_INFO_DEFERRED) : null;
  39                 if (deferred != null)
  40                         deferred.deferNode(g.getTransform(), this);
  41                 else
  42                         renderDeferred(g);
  43         }
  44
  45         @Override
  46         public void renderDeferred(Graphics2D g) {
  47                 if (info == null || "".equals(info))
  48                         return;
  49                 int zoomLevel = (Integer) g.getRenderingHint(DistrictRenderingHints.KEY_VIEW_ZOOM_LEVEL);
  50                 if (zoomLevel < 17)
  51                         return;
  52
  53                 AffineTransform oldTransform = g.getTransform();
  54
  55                 Font oldFont = g.getFont();
  56                 Color oldColor = g.getColor();
  57                 Object oldAA = g.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
  58                 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  59
  60                 if (edgeNode != null && zoomLevel != prevZoomLevel) {
  61                         origin.setLocation(edgeNode.getCenterPoint(zoomLevel));
  62                         Point2D dir = edgeNode.getDirection(zoomLevel);
  63                         double s = dir.getX() >= 0.0 ? 1.0 : -1.0;
  64                         direction.setLocation(s * dir.getX(), s * dir.getY());
  65                 }
  66                 prevZoomLevel = zoomLevel;
  67
  68                 doRender(g);
  69
  70                 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, oldAA);
  71                 g.setTransform(oldTransform);
  72                 g.setColor(oldColor);
  73                 g.setFont(oldFont);
  74         }
  75
  76         private void doRender(Graphics2D g) {
  77                 g.translate(origin.getX(), origin.getY());
  78                 double scale = 1.0 / g.getTransform().getScaleX();
  79                 g.scale(scale, scale);
  80
  81                 g.setFont(FONT);
  82                 FontMetrics fm = g.getFontMetrics();
  83                 int width = fm.stringWidth(info);
  84                 int ascent = fm.getMaxAscent();
  85
  86                 g.transform(AffineTransform.getRotateInstance(direction.getX(), direction.getY()));
  87                 g.translate(0, ascent+2);
  88
  89 //              int height = fm.getHeight();
  90 //              g.setColor(Color.WHITE);
  91 //              g.fillRect(-width/2 - 5, -ascent-1, width+10, height+2);
  92                 g.setColor(Color.BLACK);
  93 //              g.drawRect(-width/2 - 5, -ascent-1, width+10, height+2);
  94
  95                 g.drawString(info, -width/2, 0);
  96         }
  97
  98         @Override
  99         public Rectangle2D getBoundsInLocal() {
 100                 return null;
 101         }
 102
 103         public void setLocation(Point2D origin, Point2D direction) {
 104                 this.origin.setLocation(origin);
 105                 this.direction.setLocation(direction);
 106         }
 107
 108         public void setInfo(String info) {
 109                 this.info = info;
 110         }
 111
 112         public void setEdgeNode(DistrictNetworkEdgeNode n) {
 113                 this.edgeNode = n;
 114                 // Ensure that origin/location are recalculated
 115                 prevZoomLevel = -1;
 116         }
 117 }