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

   1 package era.mi.gui;
   2
   3 import java.util.function.Consumer;
   4
   5 import org.eclipse.swt.SWT;
   6 import org.eclipse.swt.widgets.Composite;
   7 import org.eclipse.swt.widgets.Event;
   8
   9 import era.mi.gui.model.ViewModel;
  10 import era.mi.gui.model.components.GUIComponent;
  11 import era.mi.gui.model.wires.Pin;
  12 import net.haspamelodica.swt.helper.gcs.GeneralGC;
  13 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
  14 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
  15 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas;
  16
  17 /**
  18  * Simulation visualizer canvas.
  19  *
  20  * @author Daniel Kirschten
  21  */
  22 public class LogicUICanvas extends ZoomableCanvas
  23 {
  24         private final ViewModel model;
  25
  26         public LogicUICanvas(Composite parent, int style, ViewModel model)
  27         {
  28                 super(parent, style);
  29
  30                 this.model = model;
  31
  32                 Consumer<Object> redrawConsumer = o -> redrawThreadsafe();
  33                 Consumer<Pin> pinAddedListener = p ->
  34                 {
  35                         p.addPinMovedListener(redrawConsumer);
  36                         redrawThreadsafe();
  37                 };
  38                 Consumer<Pin> pinRemovedListener = p ->
  39                 {
  40                         p.removePinMovedListener(redrawConsumer);
  41                         redrawThreadsafe();
  42                 };
  43                 model.addComponentAddedListener(c ->
  44                 {
  45                         c.addComponentLookChangedListener(redrawConsumer);
  46                         c.addComponentMovedListener(redrawConsumer);
  47                         c.addPinAddedListener(pinAddedListener);
  48                         c.addPinRemovedListener(pinRemovedListener);
  49                         redrawThreadsafe();
  50                 });
  51                 model.addComponentRemovedListener(c ->
  52                 {
  53                         c.removeComponentLookChangedListener(redrawConsumer);
  54                         c.removeComponentMovedListener(redrawConsumer);
  55                         c.removePinAddedListener(pinAddedListener);
  56                         c.removePinRemovedListener(pinRemovedListener);
  57                         redrawThreadsafe();
  58                 });
  59                 model.addWireAddedListener(w ->
  60                 {
  61                         w.addWireLookChangedListener(redrawConsumer);
  62                         redrawThreadsafe();
  63                 });
  64                 model.addWireRemovedListener(w ->
  65                 {
  66                         w.removeWireLookChangedListener(redrawConsumer);
  67                         redrawThreadsafe();
  68                 });
  69                 // TODO add listeners for existing components & wires
  70
  71                 addZoomedRenderer(gc ->
  72                 {
  73                         Rectangle visibleRegion = new Rectangle(offX, offY, gW / zoom, gH / zoom);
  74                         model.getComponents().forEach(c -> drawComponent(gc, c, visibleRegion));
  75                 });
  76                 addZoomedRenderer(gc -> model.getWires().forEach(w -> w.render(gc)));
  77                 addListener(SWT.MouseDown, this::mouseDown);
  78         }
  79
  80         private void drawComponent(GeneralGC gc, GUIComponent component, Rectangle visibleRegion)
  81         {
  82                 component.render(gc, visibleRegion);
  83                 gc.setBackground(getDisplay().getSystemColor(SWT.COLOR_CYAN));
  84                 for (Pin p : component.getPins())
  85                 {
  86                         Point pos = p.getPos();
  87                         gc.fillOval(pos.x - 1, pos.y - 1, 2, 2);
  88                 }
  89         }
  90
  91         private void mouseDown(Event e)
  92         {
  93                 if (e.button == 1)
  94                 {
  95                         Point click = displayToWorldCoords(e.x, e.y);
  96                         for (GUIComponent component : model.getComponents())
  97                                 if (component.getBounds().contains(click) && component.clicked(click.x, click.y))
  98                                 {
  99                                         redraw();
 100                                         break;
 101                                 }
 102                 }
 103         }
 104 }