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

   1 package era.mi.gui;\r
   2 \r
   3 import java.util.concurrent.atomic.AtomicBoolean;\r
   4 \r
   5 import org.eclipse.swt.SWT;\r
   6 import org.eclipse.swt.layout.FillLayout;\r
   7 import org.eclipse.swt.widgets.Display;\r
   8 import org.eclipse.swt.widgets.Shell;\r
   9 \r
  10 import era.mi.logic.timeline.Timeline;\r
  11 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasOverlay;\r
  12 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasUserInput;\r
  13 \r
  14 /**\r
  15  * Standalone simulation visualizer.\r
  16  * \r
  17  * @author Daniel Kirschten\r
  18  */\r
  19 public class LogicUIStandalone\r
  20 {\r
  21         private final Display display;\r
  22         private final Shell shell;\r
  23         private final LogicUICanvas ui;\r
  24         private Timeline timeline;\r
  25 \r
  26         public LogicUIStandalone(Timeline timeline)\r
  27         {\r
  28                 this.timeline = timeline;\r
  29                 display = new Display();\r
  30                 shell = new Shell(display);\r
  31                 shell.setLayout(new FillLayout());\r
  32                 ui = new LogicUICanvas(shell, SWT.NONE);\r
  33 \r
  34                 ZoomableCanvasUserInput userInput = new ZoomableCanvasUserInput(ui);\r
  35                 userInput.buttonDrag = 3;\r
  36                 userInput.buttonZoom = 2;\r
  37                 userInput.enableUserInput();\r
  38                 new ZoomableCanvasOverlay(ui, null).enableScale();\r
  39         }\r
  40 \r
  41         public LogicUICanvas getLogicUICanvas()\r
  42         {\r
  43                 return ui;\r
  44         }\r
  45 \r
  46         /**\r
  47          * Start the simulation timeline, and open the UI shell. Returns when the shell is closed.\r
  48          */\r
  49         public void run()\r
  50         {\r
  51                 AtomicBoolean running = new AtomicBoolean(true);\r
  52                 Thread simulationThread = new Thread(() ->\r
  53                 {\r
  54                         while (running.get())\r
  55                         {\r
  56                                 // always execute to keep timeline from "hanging behind" for too long\r
  57                                 timeline.executeUpTo(System.currentTimeMillis(), System.currentTimeMillis() + 10);\r
  58                                 long sleepTime;\r
  59                                 if (timeline.hasNext())\r
  60                                         sleepTime = timeline.nextEventTime() - System.currentTimeMillis();\r
  61                                 else\r
  62                                         sleepTime = 10;\r
  63                                 try\r
  64                                 {\r
  65                                         if (sleepTime > 0)\r
  66                                                 Thread.sleep(sleepTime);\r
  67                                 }\r
  68                                 catch (InterruptedException e)\r
  69                                 {\r
  70                                 } // it is normal execution flow to be interrupted\r
  71                         }\r
  72                 });\r
  73                 simulationThread.start();\r
  74                 timeline.addEventAddedListener(event ->\r
  75                 {\r
  76                         if (event.getTiming() <= System.currentTimeMillis())\r
  77                                 simulationThread.interrupt();\r
  78                 });\r
  79 \r
  80                 shell.open();\r
  81                 while (!shell.isDisposed())\r
  82                         if (!display.readAndDispatch())\r
  83                                 display.sleep();\r
  84                 running.set(false);\r
  85                 simulationThread.interrupt();\r
  86         }\r
  87 }