net.mograsim.logic.ui/src/net/mograsim/logic/ui/LogicUICanvas.java

   1 package net.mograsim.logic.ui;
   2
   3 import org.eclipse.swt.SWT;
   4 import org.eclipse.swt.graphics.Color;
   5 import org.eclipse.swt.widgets.Composite;
   6 import org.eclipse.swt.widgets.Event;
   7
   8 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
   9 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
  10 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas;
  11 import net.mograsim.logic.ui.model.ViewModel;
  12 import net.mograsim.logic.ui.model.components.GUIComponent;
  13 import net.mograsim.preferences.Preferences;
  14
  15 /**
  16  * Simulation visualizer canvas.
  17  *
  18  * @author Daniel Kirschten
  19  */
  20 public class LogicUICanvas extends ZoomableCanvas
  21 {
  22         private final ViewModel model;
  23
  24         public LogicUICanvas(Composite parent, int style, ViewModel model)
  25         {
  26                 super(parent, style);
  27
  28                 this.model = model;
  29
  30                 LogicUIRenderer renderer = new LogicUIRenderer(model);
  31                 addZoomedRenderer(gc ->
  32                 {
  33                         Color background = Preferences.current().getColor("net.mograsim.logic.ui.color.background");
  34                         if (background != null)
  35                                 setBackground(background);// this.setBackground, not gc.setBackground to have the background fill the canvas
  36                         renderer.render(gc, new Rectangle(-offX / zoom, -offY / zoom, gW / zoom, gH / zoom));
  37                 });
  38                 model.addRedrawListener(this::redrawThreadsafe);
  39
  40                 addListener(SWT.MouseDown, this::mouseDown);
  41         }
  42
  43         private void mouseDown(Event e)
  44         {
  45                 if (e.button == 1)
  46                 {
  47                         Point click = displayToWorldCoords(e.x, e.y);
  48                         for (GUIComponent component : model.getComponents())
  49                                 if (component.getBounds().contains(click) && component.clicked(click.x, click.y))
  50                                 {
  51                                         redraw();
  52                                         break;
  53                                 }
  54                 }
  55         }
  56 }