LogicUI/src/era/mi/gui/LogicUI.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 import java.util.concurrent.atomic.AtomicBoolean;\r
   8 \r
   9 import org.eclipse.swt.SWT;\r
  10 import org.eclipse.swt.layout.FillLayout;\r
  11 import org.eclipse.swt.widgets.Display;\r
  12 import org.eclipse.swt.widgets.Event;\r
  13 import org.eclipse.swt.widgets.Shell;\r
  14 \r
  15 import era.mi.gui.components.BasicGUIComponent;\r
  16 import era.mi.gui.wires.GUIWire;\r
  17 import era.mi.logic.Simulation;\r
  18 import net.haspamelodica.swt.helper.gcs.GeneralGC;\r
  19 import net.haspamelodica.swt.helper.gcs.TranslatedGC;\r
  20 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;\r
  21 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas;\r
  22 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasOverlay;\r
  23 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasUserInput;\r
  24 \r
  25 /**\r
  26  * Standalone simulation visualizer.\r
  27  * \r
  28  * @author Daniel Kirschten\r
  29  */\r
  30 public class LogicUI\r
  31 {\r
  32         private final Display display;\r
  33         private final Shell shell;\r
  34         private final ZoomableCanvas canvas;\r
  35         private final Set<BasicGUIComponent> components;\r
  36         private final Map<BasicGUIComponent, Point> componentPositions;\r
  37         private final Set<GUIWire> wires;\r
  38 \r
  39         public LogicUI()\r
  40         {\r
  41                 display = new Display();\r
  42                 shell = new Shell(display);\r
  43                 shell.setLayout(new FillLayout());\r
  44                 canvas = new ZoomableCanvas(shell, SWT.NONE);\r
  45 \r
  46                 components = new HashSet<>();\r
  47                 componentPositions = new HashMap<>();\r
  48                 wires = new HashSet<>();\r
  49 \r
  50                 canvas.addZoomedRenderer(gc -> components.forEach(c -> drawComponent(gc, c)));\r
  51                 canvas.addZoomedRenderer(gc -> wires.forEach(w -> w.render(gc)));\r
  52                 ZoomableCanvasUserInput userInput = new ZoomableCanvasUserInput(canvas);\r
  53                 userInput.buttonDrag = 3;\r
  54                 userInput.buttonZoom = 2;\r
  55                 userInput.enableUserInput();\r
  56                 new ZoomableCanvasOverlay(canvas, null).enableScale();\r
  57                 canvas.addListener(SWT.MouseDown, this::mouseDown);\r
  58         }\r
  59 \r
  60         /**\r
  61          * Add a component to be drawn. Returns the given component for convenience.\r
  62          * \r
  63          * @author Daniel Kirschten\r
  64          */\r
  65         public <C extends BasicGUIComponent> C addComponent(C component, double x, double y)\r
  66         {\r
  67                 components.add(component);\r
  68                 componentPositions.put(component, new Point(x, y));\r
  69                 return component;\r
  70         }\r
  71 \r
  72         /**\r
  73          * Add a graphical wire between the given connection points of the given components. The given components have to be added and the given\r
  74          * connection points have to be connected logically first.\r
  75          * \r
  76          * @author Daniel Kirschten\r
  77          */\r
  78         public void addWire(BasicGUIComponent component1, int component1ConnectionIndex, BasicGUIComponent component2,\r
  79                         int component2ConnectionIndex, Point... path)\r
  80         {\r
  81                 wires.add(new GUIWire(canvas::redrawThreadsafe, component1, component1ConnectionIndex, componentPositions.get(component1),\r
  82                                 component2, component2ConnectionIndex, componentPositions.get(component2), path));\r
  83         }\r
  84 \r
  85         private void drawComponent(GeneralGC gc, BasicGUIComponent component)\r
  86         {\r
  87                 TranslatedGC tgc = new TranslatedGC(gc, componentPositions.get(component));\r
  88                 component.render(tgc);\r
  89                 tgc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));\r
  90         }\r
  91 \r
  92         private void mouseDown(Event e)\r
  93         {\r
  94                 if (e.button == 1)\r
  95                 {\r
  96                         Point click = canvas.displayToWorldCoords(e.x, e.y);\r
  97                         for (BasicGUIComponent component : components)\r
  98                                 if (component.getBounds().translate(componentPositions.get(component)).contains(click))\r
  99                                 {\r
 100                                         if (component.clicked(click.x, click.y))\r
 101                                                 canvas.redraw();\r
 102                                         break;\r
 103                                 }\r
 104                 }\r
 105         }\r
 106 \r
 107         /**\r
 108          * Start the simulation timeline, and open the UI shell. Returns when the shell is closed.\r
 109          */\r
 110         public void run()\r
 111         {\r
 112                 AtomicBoolean running = new AtomicBoolean(true);\r
 113                 Thread simulationThread = new Thread(() ->\r
 114                 {\r
 115                         while (running.get())\r
 116                         {\r
 117                                 // always execute to keep timeline from "hanging behind" for too long\r
 118                                 Simulation.TIMELINE.executeUpTo(System.currentTimeMillis(), System.currentTimeMillis() + 10);\r
 119                                 long sleepTime;\r
 120                                 if (Simulation.TIMELINE.hasNext())\r
 121                                         sleepTime = Simulation.TIMELINE.nextEventTime() - System.currentTimeMillis();\r
 122                                 else\r
 123                                         sleepTime = 10;\r
 124                                 try\r
 125                                 {\r
 126                                         if (sleepTime > 0)\r
 127                                                 Thread.sleep(sleepTime);\r
 128                                 }\r
 129                                 catch (InterruptedException e)\r
 130                                 {\r
 131                                 } // it is normal execution flow to be interrupted\r
 132                         }\r
 133                 });\r
 134                 simulationThread.start();\r
 135                 Simulation.TIMELINE.addEventAddedListener(event ->\r
 136                 {\r
 137                         if (event.getTiming() <= System.currentTimeMillis())\r
 138                                 simulationThread.interrupt();\r
 139                 });\r
 140 \r
 141                 shell.open();\r
 142                 while (!shell.isDisposed())\r
 143                         if (!display.readAndDispatch())\r
 144                                 display.sleep();\r
 145                 running.set(false);\r
 146                 simulationThread.interrupt();\r
 147         }\r
 148 }