LogicUI/src/era/mi/gui/LogicUICanvas.java

   1 package era.mi.gui;\r
   2 \r
   3 import java.util.HashMap;\r
   4 import java.util.HashSet;\r
   5 import java.util.Map;\r
   6 import java.util.Set;\r
   7 \r
   8 import org.eclipse.swt.SWT;\r
   9 import org.eclipse.swt.widgets.Composite;\r
  10 import org.eclipse.swt.widgets.Event;\r
  11 \r
  12 import era.mi.gui.components.BasicGUIComponent;\r
  13 import era.mi.gui.wires.GUIWire;\r
  14 import net.haspamelodica.swt.helper.gcs.GeneralGC;\r
  15 import net.haspamelodica.swt.helper.gcs.TranslatedGC;\r
  16 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;\r
  17 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas;\r
  18 \r
  19 /**\r
  20  * Simulation visualizer canvas.\r
  21  * \r
  22  * @author Daniel Kirschten\r
  23  */\r
  24 public class LogicUICanvas extends ZoomableCanvas\r
  25 {\r
  26         private final Set<BasicGUIComponent> components;\r
  27         private final Map<BasicGUIComponent, Point> componentPositions;\r
  28         private final Set<GUIWire> wires;\r
  29 \r
  30         public LogicUICanvas(Composite parent, int style)\r
  31         {\r
  32                 super(parent, style);\r
  33 \r
  34                 components = new HashSet<>();\r
  35                 componentPositions = new HashMap<>();\r
  36                 wires = new HashSet<>();\r
  37 \r
  38                 addZoomedRenderer(gc -> components.forEach(c -> drawComponent(gc, c)));\r
  39                 addZoomedRenderer(gc -> wires.forEach(w -> w.render(gc)));\r
  40                 addListener(SWT.MouseDown, this::mouseDown);\r
  41         }\r
  42 \r
  43         /**\r
  44          * Add a component to be drawn. Returns the given component for convenience.\r
  45          * \r
  46          * @author Daniel Kirschten\r
  47          */\r
  48         public <C extends BasicGUIComponent> C addComponent(C component, double x, double y)\r
  49         {\r
  50                 components.add(component);\r
  51                 componentPositions.put(component, new Point(x, y));\r
  52                 return component;\r
  53         }\r
  54 \r
  55         /**\r
  56          * Add a graphical wire between the given connection points of the given components. The given components have to be added and the given\r
  57          * connection points have to be connected logically first.\r
  58          * \r
  59          * @author Daniel Kirschten\r
  60          */\r
  61         public void addWire(BasicGUIComponent component1, int component1ConnectionIndex, BasicGUIComponent component2,\r
  62                         int component2ConnectionIndex, Point... path)\r
  63         {\r
  64                 wires.add(new GUIWire(this::redrawThreadsafe, component1, component1ConnectionIndex, componentPositions.get(component1), component2,\r
  65                                 component2ConnectionIndex, componentPositions.get(component2), path));\r
  66         }\r
  67 \r
  68         private void drawComponent(GeneralGC gc, BasicGUIComponent component)\r
  69         {\r
  70                 TranslatedGC tgc = new TranslatedGC(gc, componentPositions.get(component));\r
  71                 component.render(tgc);\r
  72                 tgc.setBackground(getDisplay().getSystemColor(SWT.COLOR_BLUE));\r
  73         }\r
  74 \r
  75         private void mouseDown(Event e)\r
  76         {\r
  77                 if (e.button == 1)\r
  78                 {\r
  79                         Point click = displayToWorldCoords(e.x, e.y);\r
  80                         for (BasicGUIComponent component : components)\r
  81                                 if (component.getBounds().translate(componentPositions.get(component)).contains(click))\r
  82                                 {\r
  83                                         if (component.clicked(click.x, click.y))\r
  84                                                 redraw();\r
  85                                         break;\r
  86                                 }\r
  87                 }\r
  88         }\r
  89 }