|
1
7
8 package javax.swing.plaf.basic;
9
10 import com.sun.java.swing.SwingUtilities2;
11 import java.awt.*;
12 import java.beans.PropertyChangeEvent  ;
13 import java.beans.PropertyChangeListener ;
14
15 import javax.swing.*;
16 import javax.swing.BorderFactory ;
17 import javax.swing.border.Border ;
18 import javax.swing.plaf.ToolTipUI ;
19 import javax.swing.plaf.ComponentUI ;
20 import javax.swing.plaf.UIResource ;
21 import javax.swing.text.View ;
22
23
24
31 public class BasicToolTipUI extends ToolTipUI
32 {
33 static BasicToolTipUI sharedInstance = new BasicToolTipUI ();
34
38 private static PropertyChangeListener sharedPropertyChangedListener;
39
40 private PropertyChangeListener propertyChangeListener;
41
42 public static ComponentUI createUI(JComponent c) {
43 return sharedInstance;
44 }
45
46 public BasicToolTipUI() {
47 super();
48 }
49
50 public void installUI(JComponent c) {
51 installDefaults(c);
52 installComponents(c);
53 installListeners(c);
54 }
55
56 public void uninstallUI(JComponent c) {
57 uninstallDefaults(c);
59 uninstallComponents(c);
60 uninstallListeners(c);
61 }
62
63 protected void installDefaults(JComponent c){
64 LookAndFeel.installColorsAndFont(c, "ToolTip.background",
65 "ToolTip.foreground",
66 "ToolTip.font");
67 LookAndFeel.installProperty(c, "opaque", Boolean.TRUE);
68 componentChanged(c);
69 }
70
71 protected void uninstallDefaults(JComponent c){
72 LookAndFeel.uninstallBorder(c);
73 }
74
75
77 private void installComponents(JComponent c){
78 BasicHTML.updateRenderer(c, ((JToolTip)c).getTipText());
79 }
80
81
83 private void uninstallComponents(JComponent c){
84 BasicHTML.updateRenderer(c, "");
85 }
86
87 protected void installListeners(JComponent c) {
88 propertyChangeListener = createPropertyChangeListener(c);
89
90 c.addPropertyChangeListener(propertyChangeListener);
91 }
92
93 protected void uninstallListeners(JComponent c) {
94 c.removePropertyChangeListener(propertyChangeListener);
95
96 propertyChangeListener = null;
97 }
98
99
101 private PropertyChangeListener createPropertyChangeListener(JComponent c) {
102 if (sharedPropertyChangedListener == null) {
103 sharedPropertyChangedListener = new PropertyChangeHandler();
104 }
105 return sharedPropertyChangedListener;
106 }
107
108 public void paint(Graphics g, JComponent c) {
109 Font font = c.getFont();
110 FontMetrics metrics = SwingUtilities2.getFontMetrics(c, g, font);
111 Dimension size = c.getSize();
112 if (c.isOpaque()) {
113 g.setColor(c.getBackground());
114 g.fillRect(0, 0, size.width, size.height);
115 }
116 g.setColor(c.getForeground());
117 g.setFont(font);
118 String tipText = ((JToolTip)c).getTipText();
120 if (tipText == null) {
121 tipText = "";
122 }
123
124 Insets insets = c.getInsets();
125 Rectangle paintTextR = new Rectangle(
126 insets.left,
127 insets.top,
128 size.width - (insets.left + insets.right),
129 size.height - (insets.top + insets.bottom));
130 View v = (View ) c.getClientProperty(BasicHTML.propertyKey);
131 if (v != null) {
132 v.paint(g, paintTextR);
133 } else {
134 SwingUtilities2.drawString(c, g, tipText, paintTextR.x + 3,
135 paintTextR.y + metrics.getAscent());
136 }
137 }
138
139 public Dimension getPreferredSize(JComponent c) {
140 Font font = c.getFont();
141 FontMetrics fm = c.getFontMetrics(font);
142 Insets insets = c.getInsets();
143
144 Dimension prefSize = new Dimension(insets.left+insets.right,
145 insets.top+insets.bottom);
146 String text = ((JToolTip)c).getTipText();
147
148 if ((text == null) || text.equals("")) {
149 text = "";
150 }
151 else {
152 View v = (c != null) ? (View ) c.getClientProperty("html") : null;
153 if (v != null) {
154 prefSize.width += (int) v.getPreferredSpan(View.X_AXIS);
155 prefSize.height += (int) v.getPreferredSpan(View.Y_AXIS);
156 } else {
157 prefSize.width += SwingUtilities2.stringWidth(c,fm,text) + 6;
158 prefSize.height += fm.getHeight();
159 }
160 }
161 return prefSize;
162 }
163
164 public Dimension getMinimumSize(JComponent c) {
165 Dimension d = getPreferredSize(c);
166 View v = (View ) c.getClientProperty(BasicHTML.propertyKey);
167 if (v != null) {
168 d.width -= v.getPreferredSpan(View.X_AXIS) - v.getMinimumSpan(View.X_AXIS);
169 }
170 return d;
171 }
172
173 public Dimension getMaximumSize(JComponent c) {
174 Dimension d = getPreferredSize(c);
175 View v = (View ) c.getClientProperty(BasicHTML.propertyKey);
176 if (v != null) {
177 d.width += v.getMaximumSpan(View.X_AXIS) - v.getPreferredSpan(View.X_AXIS);
178 }
179 return d;
180 }
181
182
189 private void componentChanged(JComponent c) {
190 JComponent comp = ((JToolTip)c).getComponent();
191
192 if (comp != null && !(comp.isEnabled())) {
193 if (UIManager.getBorder("ToolTip.borderInactive") != null) {
196 LookAndFeel.installBorder(c, "ToolTip.borderInactive");
197 }
198 else {
199 LookAndFeel.installBorder(c, "ToolTip.border");
200 }
201 if (UIManager.getColor("ToolTip.backgroundInactive") != null) {
202 LookAndFeel.installColors(c,"ToolTip.backgroundInactive",
203 "ToolTip.foregroundInactive");
204 }
205 else {
206 LookAndFeel.installColors(c,"ToolTip.background",
207 "ToolTip.foreground");
208 }
209 } else {
210 LookAndFeel.installBorder(c, "ToolTip.border");
211 LookAndFeel.installColors(c, "ToolTip.background",
212 "ToolTip.foreground");
213 }
214 }
215
216
217 private static class PropertyChangeHandler implements
218 PropertyChangeListener {
219 public void propertyChange(PropertyChangeEvent e) {
220 String name = e.getPropertyName();
221 if (name.equals("tiptext") || "font".equals(name) ||
222 "foreground".equals(name)) {
223 JToolTip tip = ((JToolTip) e.getSource());
227 String text = tip.getTipText();
228 BasicHTML.updateRenderer(tip, text);
229 }
230 else if ("component".equals(name)) {
231 JToolTip tip = ((JToolTip) e.getSource());
232
233 if (tip.getUI() instanceof BasicToolTipUI ) {
234 ((BasicToolTipUI )tip.getUI()).componentChanged(tip);
235 }
236 }
237 }
238 }
239 }
240 |
Popular Tags |
Java API By Example, From Geeks To Geeks.