1 /*
2 * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javax.swing.plaf.metal;
27
28 import sun.swing.SwingUtilities2;
29 import sun.awt.AppContext;
30
31 import javax.swing.*;
32 import javax.swing.border.*;
33 import javax.swing.plaf.basic.*;
34 import java.awt.*;
35 import java.awt.event.*;
36 import java.beans.*;
37 import javax.swing.plaf.*;
38
39 /**
40 * MetalButtonUI implementation
41 * <p>
42 * <strong>Warning:</strong>
43 * Serialized objects of this class will not be compatible with
44 * future Swing releases. The current serialization support is
45 * appropriate for short term storage or RMI between applications running
46 * the same version of Swing. As of 1.4, support for long term storage
47 * of all JavaBeans™
48 * has been added to the <code>java.beans</code> package.
49 * Please see {@link java.beans.XMLEncoder}.
50 *
51 * @author Tom Santos
52 */
53 @SuppressWarnings("serial") // Same-version serialization only
54 public class MetalButtonUI extends BasicButtonUI {
55
56 // NOTE: These are not really needed, but at this point we can't pull
57 // them. Their values are updated purely for historical reasons.
58 /**
59 * The color of the focused button.
60 */
61 protected Color focusColor;
62
63 /**
64 * The color of the selected button.
65 */
66 protected Color selectColor;
67
68 /**
69 * The color of the disabled color.
70 */
71 protected Color disabledTextColor;
72
73 private static final Object METAL_BUTTON_UI_KEY = new Object();
74
75 // ********************************
76 // Create PLAF
77 // ********************************
78
79 /**
80 * Returns an instance of {@code MetalButtonUI}.
81 *
82 * @param c a component
83 * @return an instance of {@code MetalButtonUI}
84 */
85 public static ComponentUI createUI(JComponent c) {
86 AppContext appContext = AppContext.getAppContext();
87 MetalButtonUI metalButtonUI =
88 (MetalButtonUI) appContext.get(METAL_BUTTON_UI_KEY);
89 if (metalButtonUI == null) {
90 metalButtonUI = new MetalButtonUI();
91 appContext.put(METAL_BUTTON_UI_KEY, metalButtonUI);
92 }
93 return metalButtonUI;
94 }
95
96 // ********************************
97 // Install
98 // ********************************
99 public void installDefaults(AbstractButton b) {
100 super.installDefaults(b);
101 }
102
103 public void uninstallDefaults(AbstractButton b) {
104 super.uninstallDefaults(b);
105 }
106
107 // ********************************
108 // Create Listeners
109 // ********************************
110 protected BasicButtonListener createButtonListener(AbstractButton b) {
111 return super.createButtonListener(b);
112 }
113
114
115 // ********************************
116 // Default Accessors
117 // ********************************
118
119 /**
120 * Returns the color of the selected button.
121 *
122 * @return the color of the selected button
123 */
124 protected Color getSelectColor() {
125 selectColor = UIManager.getColor(getPropertyPrefix() + "select");
126 return selectColor;
127 }
128
129 /**
130 * Returns the color of a disabled text.
131 *
132 * @return the color of a disabled text
133 */
134 protected Color getDisabledTextColor() {
135 disabledTextColor = UIManager.getColor(getPropertyPrefix() +
136 "disabledText");
137 return disabledTextColor;
138 }
139
140 /**
141 * Returns the color of the focused button.
142 *
143 * @return the color of the focused button
144 */
145 protected Color getFocusColor() {
146 focusColor = UIManager.getColor(getPropertyPrefix() + "focus");
147 return focusColor;
148 }
149
150 // ********************************
151 // Paint
152 // ********************************
153 /**
154 * If necessary paints the background of the component, then
155 * invokes <code>paint</code>.
156 *
157 * @param g Graphics to paint to
158 * @param c JComponent painting on
159 * @throws NullPointerException if <code>g</code> or <code>c</code> is
160 * null
161 * @see javax.swing.plaf.ComponentUI#update
162 * @see javax.swing.plaf.ComponentUI#paint
163 * @since 1.5
164 */
165 public void update(Graphics g, JComponent c) {
166 AbstractButton button = (AbstractButton)c;
167 if ((c.getBackground() instanceof UIResource) &&
168 button.isContentAreaFilled() && c.isEnabled()) {
169 ButtonModel model = button.getModel();
170 if (!MetalUtils.isToolBarButton(c)) {
171 if (!model.isArmed() && !model.isPressed() &&
172 MetalUtils.drawGradient(
173 c, g, "Button.gradient", 0, 0, c.getWidth(),
174 c.getHeight(), true)) {
175 paint(g, c);
176 return;
177 }
178 }
179 else if (model.isRollover() && MetalUtils.drawGradient(
180 c, g, "Button.gradient", 0, 0, c.getWidth(),
181 c.getHeight(), true)) {
182 paint(g, c);
183 return;
184 }
185 }
186 super.update(g, c);
187 }
188
189 protected void paintButtonPressed(Graphics g, AbstractButton b) {
190 if ( b.isContentAreaFilled() ) {
191 Dimension size = b.getSize();
192 g.setColor(getSelectColor());
193 g.fillRect(0, 0, size.width, size.height);
194 }
195 }
196
197 protected void paintFocus(Graphics g, AbstractButton b,
198 Rectangle viewRect, Rectangle textRect, Rectangle iconRect){
199
200 Rectangle focusRect = new Rectangle();
201 String text = b.getText();
202 boolean isIcon = b.getIcon() != null;
203
204 // If there is text
205 if ( text != null && !text.isEmpty()) {
206 if ( !isIcon ) {
207 focusRect.setBounds( textRect );
208 }
209 else {
210 focusRect.setBounds( iconRect.union( textRect ) );
211 }
212 }
213 // If there is an icon and no text
214 else if ( isIcon ) {
215 focusRect.setBounds( iconRect );
216 }
217
218 g.setColor(getFocusColor());
219 g.drawRect((focusRect.x-1), (focusRect.y-1),
220 focusRect.width+1, focusRect.height+1);
221
222 }
223
224
225 protected void paintText(Graphics g, JComponent c, Rectangle textRect, String text) {
226 AbstractButton b = (AbstractButton) c;
227 ButtonModel model = b.getModel();
228 FontMetrics fm = SwingUtilities2.getFontMetrics(c, g);
229 int mnemIndex = b.getDisplayedMnemonicIndex();
230
231 /* Draw the Text */
232 if(model.isEnabled()) {
233 /*** paint the text normally */
234 g.setColor(b.getForeground());
235 }
236 else {
237 /*** paint the text disabled ***/
238 g.setColor(getDisabledTextColor());
239 }
240 SwingUtilities2.drawStringUnderlineCharAt(c, g,text,mnemIndex,
241 textRect.x, textRect.y + fm.getAscent());
242 }
243 }