net.mograsim.logic.model.editor/src/net/mograsim/logic/model/editor/states/BoxSelectionState.java

   1 package net.mograsim.logic.model.editor.states;
   2
   3 import org.eclipse.swt.SWT;
   4 import org.eclipse.swt.widgets.Display;
   5
   6 import net.haspamelodica.swt.helper.swtobjectwrappers.Point;
   7 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
   8 import net.haspamelodica.swt.helper.zoomablecanvas.ZoomableCanvas.ZoomedRenderer;
   9 import net.mograsim.logic.model.editor.Editor;
  10 import net.mograsim.logic.model.editor.Selection;
  11 import net.mograsim.logic.model.editor.handles.Handle;
  12
  13 public class BoxSelectionState extends EditorState
  14 {
  15         private Point origin;
  16         private double mX, mY;
  17
  18         private final ZoomedRenderer boxRenderer = gc ->
  19         {
  20                 if (origin != null)
  21                 {
  22                         gc.setLineWidth(0.5);
  23                         gc.setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_DARK_YELLOW));
  24                         gc.drawRectangle(origin.x, origin.y, mX - origin.x, mY - origin.y);
  25                 }
  26         };
  27
  28         public BoxSelectionState(Editor editor, StateManager manager)
  29         {
  30                 super(editor, manager);
  31         }
  32
  33         @Override
  34         public void onEntry()
  35         {
  36                 editor.gui.logicCanvas.addZoomedRenderer(boxRenderer);
  37                 editor.gui.logicCanvas.redrawThreadsafe();
  38         }
  39
  40         @Override
  41         public void onExit()
  42         {
  43                 editor.gui.logicCanvas.removeZoomedRenderer(boxRenderer);
  44                 editor.gui.logicCanvas.redrawThreadsafe();
  45         }
  46
  47         @Override
  48         public void boxSelect()
  49         {
  50                 manager.setState(new SelectionState(editor, manager));
  51         }
  52
  53         @Override
  54         public void clicked(Point clicked, int stateMask)
  55         {
  56                 if (origin == null)
  57                 {
  58                         origin = new Point(clicked.x, clicked.y);
  59                         mX = clicked.x;
  60                         mY = clicked.y;
  61                 } else
  62                 {
  63                         Selection s = editor.getSelection();
  64                         s.clear();
  65                         boolean leftToRight = mX > origin.x, topToBottom = mY > origin.y;
  66                         double x = leftToRight ? origin.x : mX, y = topToBottom ? origin.y : mY, width = leftToRight ? mX - origin.x : origin.x - mX,
  67                                         height = topToBottom ? mY - origin.y : origin.y - mY;
  68
  69                         Rectangle selected = new Rectangle(x, y, width, height);
  70                         for (Handle h : editor.handleManager.getHandles())
  71                         {
  72                                 Rectangle hBounds = h.getBounds();
  73                                 if (selected.contains(hBounds.x, hBounds.y) && selected.contains(hBounds.x + hBounds.width, hBounds.y + hBounds.height))
  74                                 {
  75                                         s.add(h);
  76                                 }
  77                         }
  78                         manager.setState(new SelectionState(editor, manager));
  79                 }
  80         }
  81
  82         @Override
  83         public void mouseMoved(double x, double y)
  84         {
  85                 mX = x;
  86                 mY = y;
  87                 editor.gui.logicCanvas.redrawThreadsafe();
  88         }
  89 }