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1
38
39 package swingwtx.swing;
40
41 import swingwtx.swing.event.*;
42
43 import org.eclipse.swt.widgets.*;
44 import org.eclipse.swt.SWT;
45
46 import java.util.*;
47
48 public class JSlider extends JComponent implements SwingConstants {
49
50 protected int orientation = SwingConstants.HORIZONTAL;
51 protected int min = 0;
52 protected int max = 100;
53 protected int value = 50;
54 protected int thumb = 10;
55 protected Dictionary labelTable = new Hashtable();
56
57 protected Vector changeListeners = new Vector();
58 protected Scale ppeer = null;
59
60 private int threadSafeInt = 0;
61
62 public JSlider() { this(SwingConstants.HORIZONTAL, 0, 100, 50); }
63 public JSlider(int orientation) { this(orientation, 0, 100, 50); }
64 public JSlider(int min, int max) { this(SwingConstants.HORIZONTAL, min, max, (min + max) / 2); }
65 public JSlider(int min, int max, int value) { this(SwingConstants.HORIZONTAL, min, max, value); }
66 public JSlider(int orientation, int min, int max, int value) {
67 this.orientation = orientation;
68 this.min = min;
69 this.max = max;
70 this.value = value;
71 }
72
73 public Hashtable createStandardLabels(int increment) {
74 Hashtable h = new Hashtable(10);
75 for (int i = 0; i <= max; i += increment)
76 h.put( new Integer  (i), new Integer (i) );
77 return h;
78 }
79
80 public Hashtable createStandardLabels(int increment, int start) {
81 Hashtable h = new Hashtable(10);
82 for (int i = start; i <= max; i += increment)
83 h.put( new Integer (i), new Integer (i) );
84 return h;
85 }
86
87 public void addChangeListener(ChangeListener l) {
88 changeListeners.add(l);
89 }
90 public void removeChangeListener(ChangeListener l) {
91 changeListeners.remove(l);
92 }
93
94 protected void fireStateChanged() {
95 for (int i = 0; i < changeListeners.size(); i++) {
96 ((ChangeListener) changeListeners.get(i)).stateChanged(new ChangeEvent(this));
97 }
98 }
99
100 public int getValue() {
101 if (!SwingWTUtils.isSWTControlAvailable(ppeer))
102 return value;
103 SwingUtilities.invokeSync(new Runnable () {
104 public void run() {
105 threadSafeInt = ppeer.getSelection();
106 }
107 });
108 return threadSafeInt;
109 }
110
111 public void setValue(final int value) {
112 this.value = value;
113 if (SwingWTUtils.isSWTControlAvailable(ppeer))
114 SwingUtilities.invokeSync(new Runnable () {
115 public void run() {
116 ppeer.setSelection(value);
117 }
118 });
119 }
120
121 public int getExtent() { return thumb; }
122 public void setExtent(int extent) {
123 thumb = extent;
124 if (SwingWTUtils.isSWTControlAvailable(ppeer))
125 SwingUtilities.invokeSync(new Runnable () {
126 public void run() {
127 ppeer.setPageIncrement(thumb);
128 }
129 });
130 }
131 public boolean getInverted() { return false; }
132 public boolean isInverted() { return false; }
133 public void setInverted(boolean b) {}
134 public int getMajorTickSpacing() { return getExtent(); }
135 public void setMajorTickSpacing(int spacing) { setExtent(spacing); }
136 public int getMinorTickSpacing() { return getExtent() / 2; }
137 public void setMinorTickSpacing(int spacing) { }
138 public boolean getSnapToTicks() { return true; }
139 public boolean getSnapToValue() { return true; }
140 public boolean isSnapToTicks() { return true; }
141 public boolean isSnapToValue() { return true; }
142 public void setSnapToTicks(boolean b) {}
143 public void setSnapToValue(boolean b) {}
144 public boolean getPaintTicks() { return true; }
145 public boolean isPaintTicks() { return true; }
146 public void setPaintTicks(boolean b) {}
147 public boolean getPaintTrack() { return true; }
148 public boolean isPaintTrack() { return true; }
149 public void setPaintTrack(boolean b) {}
150 public boolean getPaintLabels() { return true; }
151 public boolean isPaintLabels() { return true; }
152 public void setPaintLabels(boolean b) {}
153 public Dictionary getLabelTable() { return labelTable; }
154 public void setLabelTable(Dictionary table) { labelTable = table; }
155
156
159 protected swingwt.awt.Dimension calculatePreferredSize() {
160 swingwt.awt.Dimension size = new swingwt.awt.Dimension(200, 25);
161 setSize(size);
162 return size;
163 }
164
165
170 public void setSwingWTParent(swingwt.awt.Container parent) throws Exception {
171 descendantHasPeer = true;
172 ppeer = new Scale(parent.getComposite(),
173 (border instanceof swingwtx.swing.border.EmptyBorder ? SWT.NONE : SWT.BORDER ) |
174 (orientation == SwingConstants.HORIZONTAL ? SWT.HORIZONTAL : SWT.VERTICAL)
175 );
176 ppeer.setMaximum(max);
177 ppeer.setMinimum(min);
178 ppeer.setPageIncrement(thumb);
179 ppeer.setSelection(value);
180
181 if (orientation == SwingConstants.HORIZONTAL && pPrefSize == null)
183 setPreferredSize(new swingwt.awt.Dimension(200, 20));
184 if (orientation == SwingConstants.VERTICAL && pPrefSize == null)
185 setPreferredSize(new swingwt.awt.Dimension(20, 200));
186
187 ppeer.addSelectionListener(new org.eclipse.swt.events.SelectionAdapter() {
189 public void widgetSelected(org.eclipse.swt.events.SelectionEvent e) {
190 fireStateChanged();
191 }
192 });
193
194 peer = ppeer;
195 this.parent = parent;
196 }
197
198 }
199 |
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