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1
11
12 package org.eclipse.ui.internal.gestures;
13
14 import java.util.ArrayList  ;
15 import java.util.Iterator ;
16 import java.util.List ;
17
18 import org.eclipse.swt.events.MouseEvent;
19 import org.eclipse.swt.events.MouseListener;
20 import org.eclipse.swt.events.MouseMoveListener;
21 import org.eclipse.swt.widgets.Control;
22
23 public final class Capture {
24
25 private List captureListeners;
26 private boolean capturing;
27 private Control control;
28 private int data;
29
30 private MouseListener mouseListener = new MouseListener() {
31 public void mouseDoubleClick(MouseEvent mouseEvent) {
32 }
33
34 public void mouseDown(MouseEvent mouseEvent) {
35 if (!capturing) {
36 capturing = true;
37 data = mouseEvent.stateMask;
38 pen = mouseEvent.button;
39 points.clear();
40 points.add(new Point(mouseEvent.x, mouseEvent.y));
41 control.addMouseMoveListener(mouseMoveListener);
42 }
43 }
44
45 public void mouseUp(MouseEvent mouseEvent) {
46 if (capturing && mouseEvent.button == pen) {
47 control.removeMouseMoveListener(mouseMoveListener);
48 points.add(new Point(mouseEvent.x, mouseEvent.y));
49 CaptureEvent captureEvent =
50 CaptureEvent.create(
51 data,
52 pen,
53 (Point[]) points.toArray(new Point[points.size()]));
54 capturing = false;
55 data = 0;
56 pen = 0;
57 points.clear();
58 Iterator iterator = captureListeners.iterator();
59
60 while (iterator.hasNext())
61 ((ICaptureListener) iterator.next()).capture(captureEvent);
62 }
63 }
64 };
65
66 private MouseMoveListener mouseMoveListener = new MouseMoveListener() {
67 public void mouseMove(MouseEvent mouseEvent) {
68 if (capturing)
69 points.add(new Point(mouseEvent.x, mouseEvent.y));
70 }
71 };
72 private int pen;
73 private List points = new ArrayList ();
74
75 public Capture() {
76 }
77
78 public void addCaptureListener(ICaptureListener captureListener) {
79 if (captureListener == null)
80 throw new NullPointerException ();
81
82 if (captureListeners == null)
83 captureListeners = new ArrayList ();
84
85 if (!captureListeners.contains(captureListener))
86 captureListeners.add(captureListener);
87 }
88
89 public Control getControl() {
90 return control;
91 }
92
93 public void removeCaptureListener(ICaptureListener captureListener) {
94 if (captureListener == null)
95 throw new NullPointerException ();
96
97 if (captureListeners != null)
98 captureListeners.remove(captureListener);
99 }
100
101 public void setControl(Control control) {
102 if (this.control != control) {
103 if (this.control != null) {
104 control.removeMouseMoveListener(mouseMoveListener);
105 control.removeMouseListener(mouseListener);
106 }
107
108 this.control = control;
109 capturing = false;
110 data = 0;
111 pen = 0;
112 points.clear();
113
114 if (this.control != null)
115 control.addMouseListener(mouseListener);
116 }
117 }
118 }
119 |
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