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-rw-r--r--java/EAC/Rubberband.java103
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diff --git a/java/EAC/Rubberband.java b/java/EAC/Rubberband.java
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--- a/java/EAC/Rubberband.java
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-/**
- * A abstract base class for rubberbands.<p>
- *
- * Rubberbands do their rubberbanding inside of a Component,
- * which must be specified at construction time.<p>
- *
- * Subclasses are responsible for implementing
- * <em>void drawLast(Graphics g)</em> and
- * <em>void drawNext(Graphics g)</em>.
- *
- * drawLast() draws the appropriate geometric shape at the last
- * rubberband location, while drawNext() draws the appropriate
- * geometric shape at the next rubberband location. All of the
- * underlying support for rubberbanding is taken care of here,
- * including handling XOR mode setting; extensions of Rubberband
- * need not concern themselves with anything but drawing the
- * last and next geometric shapes.<p>
- *
- * @version 1.00, 12/27/95
- * @author David Geary
- */
-package EAC;
-import java.awt.*;
-
-abstract public class Rubberband {
- protected Point anchor = new Point(0,0);
- protected Point stretched = new Point(0,0);
- protected Point last = new Point(0,0);
- protected Point end = new Point(0,0);
-
- private Component component;
- private boolean firstStretch = true;
-
- abstract public void drawLast(Graphics g);
- abstract public void drawNext(Graphics g);
-
- public Rubberband(Component component) {
- this.component = component;
- }
-
- public Point getAnchor () { return anchor; }
- public Point getStretched() { return stretched; }
- public Point getLast () { return last; }
- public Point getEnd () { return end; }
- public void setAnchor(Point p) { anchor = p; }
- public void setEnd(Point p) { end = p; }
-
- public void anchor(Point p) {
- firstStretch = true;
- anchor.x = p.x;
- anchor.y = p.y;
-
- stretched.x = last.x = anchor.x;
- stretched.y = last.y = anchor.y;
- }
-
- public void stretch(Point p) {
- last.x = stretched.x;
- last.y = stretched.y;
- stretched.x = p.x;
- stretched.y = p.y;
-
- Graphics g = component.getGraphics();
- if (g != null) {
- g.setXORMode(component.getBackground());
-
- if (firstStretch == true)
- firstStretch = false;
- else
- drawLast(g);
-
- drawNext(g);
- }
- }
-
- public void end(Point p) {
- last.x = end.x = p.x;
- last.y = end.y = p.y;
-
- Graphics g = component.getGraphics();
- if(g != null) {
- g.setXORMode(component.getBackground());
- drawLast(g);
- }
- }
-
- public Rectangle bounds() {
- return new Rectangle(stretched.x < anchor.x ?
- stretched.x : anchor.x,
- stretched.y < anchor.y ?
- stretched.y : anchor.y,
- Math.abs(stretched.x - anchor.x),
- Math.abs(stretched.y - anchor.y));
- }
-
- public Rectangle lastBounds() {
- return new Rectangle(
- last.x < anchor.x ? last.x : anchor.x,
- last.y < anchor.y ? last.y : anchor.y,
- Math.abs(last.x - anchor.x),
- Math.abs(last.y - anchor.y));
- }
-}