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.Graphics2D;
   6 import java.awt.RenderingHints;
   7 import java.awt.geom.AffineTransform;
   8 import java.awt.geom.NoninvertibleTransformException;
   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.maps.MapScalingTransform;
  14 import org.simantics.scenegraph.ParentNode;
  15 import org.simantics.scenegraph.g2d.G2DNode;
  16 import org.simantics.scenegraph.g2d.G2DParentNode;
  17 import org.simantics.scenegraph.g2d.nodes.spatial.RTreeNode;
  18 import org.simantics.scenegraph.utils.DPIUtil;
  19 import org.simantics.scenegraph.utils.NodeUtil;
  20
  21 public class DistrictNetworkStaticInfoNode extends G2DNode implements DeferredNode {
  22
  23         private static final Font FONT = new Font("Tahoma", Font.PLAIN, (int)(DPIUtil.upscale(9) * MapScalingTransform.getScaleY() + 0.5));
  24
  25         private static final long serialVersionUID = 1L;
  26
  27         private static final Point2D UNIT_X = new Point2D.Double(1.0, 0.0);
  28
  29         public static final String NODE_KEY = "DISTRICT_NETWORK_STATIC_INFO";
  30
  31         String info = null;
  32         Point2D origin = new Point2D.Double();
  33         Point2D direction = UNIT_X;
  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
  50                 AffineTransform oldTransform = g.getTransform();
  51
  52                 // There has to be a better way to calculate the zoom level in this context...
  53                 AffineTransform baseTransform;
  54                 try {
  55                         baseTransform = ((G2DParentNode)getParent()).getTransform().createInverse();
  56                 } catch (NoninvertibleTransformException e) {
  57                         baseTransform = new AffineTransform();
  58                 }
  59
  60                 baseTransform.preConcatenate(oldTransform);
  61                 int zoomLevel = MapScalingTransform.zoomLevel(baseTransform);
  62                 if (zoomLevel < 17)
  63                         return;
  64
  65                 Font oldFont = g.getFont();
  66                 Color oldColor = g.getColor();
  67                 Object oldAA = g.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
  68                 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  69
  70                 doRender(g);
  71
  72                 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, oldAA);
  73                 g.setTransform(oldTransform);
  74                 g.setColor(oldColor);
  75                 g.setFont(oldFont);
  76         }
  77
  78         private void doRender(Graphics2D g) {
  79                 g.translate(origin.getX(), origin.getY());
  80                 double scale = 1.5 / g.getTransform().getScaleX();
  81                 g.scale(scale, scale);
  82
  83                 g.setFont(FONT);
  84                 int width1 = g.getFontMetrics().stringWidth(info);
  85 //              int height = g.getFontMetrics().getHeight();
  86
  87                 g.transform(AffineTransform.getRotateInstance(direction.getX(), direction.getY()));
  88                 g.translate(0, 10);
  89
  90 //              g.setColor(Color.WHITE);
  91 //              g.fillRect(-width1/2 - 5, -height-2, width1+10, height+4);
  92
  93                 g.setColor(Color.BLACK);
  94
  95                 g.drawString(info, -width1/2, 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 = origin;
 105                 this.direction = direction;
 106         }
 107
 108         public void setInfo(String info) {
 109                 this.info = info;
 110         }
 111 }