01: /*
02: * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
03: * for visualizing and manipulating spatial features with geometry and attributes.
04: *
05: * Copyright (C) 2003 Vivid Solutions
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: *
21: * For more information, contact:
22: *
23: * Vivid Solutions
24: * Suite #1A
25: * 2328 Government Street
26: * Victoria BC V8T 5G5
27: * Canada
28: *
29: * (250)385-6040
30: * www.vividsolutions.com
31: */
32:
33: package com.vividsolutions.jump.workbench.ui.cursortool;
34:
35: import java.awt.Cursor;
36: import java.awt.event.MouseEvent;
37: import java.awt.geom.NoninvertibleTransformException;
38: import java.util.ArrayList;
39: import java.util.List;
40:
41: import javax.swing.Icon;
42:
43: import com.vividsolutions.jts.geom.Coordinate;
44: import com.vividsolutions.jump.workbench.ui.LayerViewPanel;
45: import com.vividsolutions.jump.workbench.ui.images.IconLoader;
46: import com.vividsolutions.jump.geom.Angle;
47:
48: /**
49: * A tool which displays cumlative length, angle and cumlative area of
50: * a linestring drawn on the screen.
51: *
52: * @author Martin Davis
53: * @version 1.0
54: */
55: public class MeasureTool extends MultiClickTool {
56:
57: public MeasureTool() {
58: allowSnapping();
59: setMetricsDisplay(new CoordinateListMetrics());
60: }
61:
62: public Icon getIcon() {
63: return IconLoader.icon("Ruler.gif");
64: }
65:
66: public Cursor getCursor() {
67: return createCursor(IconLoader.icon("RulerCursor.gif")
68: .getImage());
69: }
70:
71: public void mouseLocationChanged(MouseEvent e) {
72: try {
73: if (isShapeOnScreen()) {
74: ArrayList currentCoordinates = new ArrayList(
75: getCoordinates());
76: currentCoordinates.add(getPanel().getViewport()
77: .toModelCoordinate(e.getPoint()));
78: }
79: super .mouseLocationChanged(e);
80: } catch (Throwable t) {
81: getPanel().getContext().handleThrowable(t);
82: }
83: }
84:
85: protected void gestureFinished() {
86: reportNothingToUndoYet();
87: //Status bar is cleared before #gestureFinished is called. So redisplay the metrics
88: getMetrics().displayMetrics(getCoordinates(), getPanel());
89: }
90:
91: }
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