3 import java.util.HashMap;
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4 import java.util.HashSet;
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5 import java.util.Map;
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6 import java.util.Set;
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7 import java.util.concurrent.atomic.AtomicBoolean;
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9 import org.eclipse.swt.SWT;
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10 import org.eclipse.swt.layout.FillLayout;
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11 import org.eclipse.swt.widgets.Display;
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12 import org.eclipse.swt.widgets.Event;
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13 import org.eclipse.swt.widgets.Shell;
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15 import era.mi.gui.components.BasicGUIComponent;
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16 import era.mi.gui.wires.GUIWire;
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17 import era.mi.logic.Simulation;
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18 import net.haspamelodica.swt.helper.gcs.GeneralGC;
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19 import net.haspamelodica.swt.helper.gcs.TranslatedGC;
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20 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
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21 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas;
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22 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasOverlay;
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23 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasUserInput;
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26 * Standalone simulation visualizer.
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28 * @author Daniel Kirschten
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30 public class LogicUI
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32 private final Display display;
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33 private final Shell shell;
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34 private final ZoomableCanvas canvas;
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35 private final Set<BasicGUIComponent> components;
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36 private final Map<BasicGUIComponent, Point> componentPositions;
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37 private final Set<GUIWire> wires;
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41 display = new Display();
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42 shell = new Shell(display);
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43 shell.setLayout(new FillLayout());
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44 canvas = new ZoomableCanvas(shell, SWT.NONE);
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46 components = new HashSet<>();
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47 componentPositions = new HashMap<>();
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48 wires = new HashSet<>();
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50 canvas.addZoomedRenderer(gc -> components.forEach(c -> drawComponent(gc, c)));
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51 canvas.addZoomedRenderer(gc -> wires.forEach(w -> w.render(gc)));
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52 ZoomableCanvasUserInput userInput = new ZoomableCanvasUserInput(canvas);
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53 userInput.buttonDrag = 3;
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54 userInput.buttonZoom = 2;
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55 userInput.enableUserInput();
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56 new ZoomableCanvasOverlay(canvas, null).enableScale();
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57 canvas.addListener(SWT.MouseDown, this::mouseDown);
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61 * Add a component to be drawn. Returns the given component for convenience.
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63 * @author Daniel Kirschten
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65 public <C extends BasicGUIComponent> C addComponent(C component, double x, double y)
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67 components.add(component);
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68 componentPositions.put(component, new Point(x, y));
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73 * Add a graphical wire between the given connection points of the given components. The given components have to be added and the given
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74 * connection points have to be connected logically first.
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76 * @author Daniel Kirschten
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78 public void addWire(BasicGUIComponent component1, int component1ConnectionIndex, BasicGUIComponent component2,
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79 int component2ConnectionIndex, Point... path)
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81 wires.add(new GUIWire(canvas::redrawThreadsafe, component1, component1ConnectionIndex, componentPositions.get(component1),
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82 component2, component2ConnectionIndex, componentPositions.get(component2), path));
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85 private void drawComponent(GeneralGC gc, BasicGUIComponent component)
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87 TranslatedGC tgc = new TranslatedGC(gc, componentPositions.get(component));
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88 component.render(tgc);
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89 tgc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
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92 private void mouseDown(Event e)
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96 Point click = canvas.displayToWorldCoords(e.x, e.y);
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97 for (BasicGUIComponent component : components)
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98 if (component.getBounds().translate(componentPositions.get(component)).contains(click))
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100 if (component.clicked(click.x, click.y))
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108 * Start the simulation timeline, and open the UI shell. Returns when the shell is closed.
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112 AtomicBoolean running = new AtomicBoolean(true);
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113 Thread simulationThread = new Thread(() ->
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115 while (running.get())
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117 // always execute to keep timeline from "hanging behind" for too long
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118 Simulation.TIMELINE.executeUpTo(System.currentTimeMillis(), System.currentTimeMillis() + 10);
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120 if (Simulation.TIMELINE.hasNext())
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121 sleepTime = Simulation.TIMELINE.nextEventTime() - System.currentTimeMillis();
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127 Thread.sleep(sleepTime);
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129 catch (InterruptedException e)
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131 } // it is normal execution flow to be interrupted
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134 simulationThread.start();
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135 Simulation.TIMELINE.addEventAddedListener(event ->
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137 if (event.getTiming() <= System.currentTimeMillis())
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138 simulationThread.interrupt();
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142 while (!shell.isDisposed())
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143 if (!display.readAndDispatch())
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145 running.set(false);
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146 simulationThread.interrupt();
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