git.gag.com Git - debian/openrocket/blob - core/src/net/sf/openrocket/gui/figureelements/Caret.java

   1 package net.sf.openrocket.gui.figureelements;
   2
   3
   4 import java.awt.Color;
   5 import java.awt.Graphics2D;
   6 import java.awt.Rectangle;
   7 import java.awt.geom.AffineTransform;
   8 import java.awt.geom.Area;
   9
  10 public abstract class Caret implements FigureElement {
  11         private double x,y;
  12
  13         /**
  14          * Creates a new caret at the specified coordinates.
  15          */
  16         public Caret(double x, double y) {
  17                 this.x = x;
  18                 this.y = y;
  19         }
  20
  21         /**
  22          * Sets the position of the caret to the new coordinates.
  23          */
  24         public void setPosition(double x, double y) {
  25                 this.x = x;
  26                 this.y = y;
  27         }
  28
  29         /**
  30          * Paints the caret to the Graphics2D element.
  31          */
  32         public void paint(Graphics2D g2, double scale) {
  33                 Area caret = getCaret();
  34                 AffineTransform t = new AffineTransform(1.0/scale, 0, 0, 1.0/scale, x, y);
  35                 caret.transform(t);
  36
  37                 g2.setColor(getColor());
  38                 g2.fill(caret);
  39         }
  40
  41
  42         public void paint(Graphics2D g2, double scale, Rectangle visible) {
  43                 throw new UnsupportedOperationException("paint() with rectangle unsupported.");
  44         }
  45
  46         /**
  47          * Return the Area object corresponding to the mark.
  48          */
  49         protected abstract Area getCaret();
  50
  51         /**
  52          * Return the color to be used when drawing the mark.
  53          */
  54         protected abstract Color getColor();
  55 }