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

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