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

   1 package era.mi.gui;
   2
   3 import java.util.HashSet;
   4 import java.util.Set;
   5
   6 import org.eclipse.swt.SWT;
   7 import org.eclipse.swt.widgets.Composite;
   8 import org.eclipse.swt.widgets.Event;
   9
  10 import era.mi.gui.model.components.GUIComponent;
  11 import era.mi.gui.model.wires.GUIWire;
  12 import era.mi.gui.model.wires.Pin;
  13 import net.haspamelodica.swt.helper.gcs.GeneralGC;
  14 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
  15 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
  16 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas;
  17
  18 /**
  19  * Simulation visualizer canvas.
  20  *
  21  * @author Daniel Kirschten
  22  */
  23 public class LogicUICanvas extends ZoomableCanvas
  24 {
  25         private final Set<GUIComponent> components;
  26         private final Set<GUIWire> wires;
  27
  28         public LogicUICanvas(Composite parent, int style)
  29         {
  30                 super(parent, style);
  31
  32                 components = new HashSet<>();
  33                 wires = new HashSet<>();
  34
  35                 addZoomedRenderer(gc ->
  36                 {
  37                         Rectangle visibleRegion = new Rectangle(offX, offY, gW / zoom, gH / zoom);
  38                         components.forEach(c -> drawComponent(gc, c, visibleRegion));
  39                 });
  40                 addZoomedRenderer(gc -> wires.forEach(w -> w.render(gc)));
  41                 addListener(SWT.MouseDown, this::mouseDown);
  42         }
  43
  44         /**
  45          * Add a component to be drawn. Returns the given component for convenience.
  46          *
  47          * @author Daniel Kirschten
  48          */
  49         // TODO replace with model change listener
  50         public <C extends GUIComponent> C addComponent(C component)
  51         {
  52                 components.add(component);
  53                 return component;
  54         }
  55
  56         /**
  57          * Add a graphical wire between the given connection points of the given components. The given components have to be added and the given
  58          * connection points have to be connected logically first.
  59          *
  60          * @author Daniel Kirschten
  61          */
  62         // TODO replace with model change listener
  63         public void addWire(Pin pin1, Pin pin2, Point... path)
  64         {
  65                 wires.add(new GUIWire(this::redrawThreadsafe, pin1, pin2, path));
  66         }
  67
  68         private void drawComponent(GeneralGC gc, GUIComponent component, Rectangle visibleRegion)
  69         {
  70                 component.render(gc, visibleRegion);
  71                 gc.setBackground(getDisplay().getSystemColor(SWT.COLOR_CYAN));
  72                 for (Pin p : component.getPins())
  73                 {
  74                         Point pos = p.getPos();
  75                         gc.fillOval(pos.x - 1, pos.y - 1, 2, 2);
  76                 }
  77         }
  78
  79         private void mouseDown(Event e)
  80         {
  81                 if (e.button == 1)
  82                 {
  83                         Point click = displayToWorldCoords(e.x, e.y);
  84                         for (GUIComponent component : components)
  85                                 if (component.getBounds().contains(click))
  86                                 {
  87                                         if (component.clicked(click.x, click.y))
  88                                                 redraw();
  89                                         break;
  90                                 }
  91                 }
  92         }
  93 }