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 com.sun.java.swing;
27
28 import sun.awt.EventQueueDelegate;
29 import sun.awt.AppContext;
30 import java.util.Collections;
31 import java.util.Map;
32 import java.util.WeakHashMap;
33 import java.util.concurrent.Callable;
34 import java.applet.Applet;
35 import java.awt.AWTEvent;
36 import java.awt.EventQueue;
37 import java.awt.Component;
38 import java.awt.Container;
39 import java.awt.Window;
40 import javax.swing.JComponent;
41 import javax.swing.RepaintManager;
42
43 /**
44 * A collection of utility methods for Swing.
45 * <p>
46 * <b>WARNING:</b> While this class is public, it should not be treated as
47 * public API and its API may change in incompatable ways between dot dot
48 * releases and even patch releases. You should not rely on this class even
49 * existing.
100 }
101 }
102
103 /**
104 * Checks if vsync painting is requested for {@code rootContainer}
105 *
106 * @param rootContainer topmost container. Should be either Window or Applet
107 * @return {@code true} if vsync painting is requested for {@code rootContainer}
108 */
109 public static boolean isVsyncRequested(Container rootContainer) {
110 assert (rootContainer instanceof Applet) || (rootContainer instanceof Window);
111 return Boolean.TRUE == vsyncedMap.get(rootContainer);
112 }
113
114 /**
115 * Returns delegate {@code RepaintManager} for {@code component} hierarchy.
116 */
117 public static RepaintManager getDelegateRepaintManager(Component
118 component) {
119 RepaintManager delegate = null;
120 if (Boolean.TRUE == AppContext.getAppContext().get(
121 DELEGATE_REPAINT_MANAGER_KEY)) {
122 while (delegate == null && component != null) {
123 while (component != null
124 && ! (component instanceof JComponent)) {
125 component = component.getParent();
126 }
127 if (component != null) {
128 delegate = (RepaintManager)
129 ((JComponent) component)
130 .getClientProperty(DELEGATE_REPAINT_MANAGER_KEY);
131 component = component.getParent();
132 }
133
134 }
135 }
136 return delegate;
137 }
138
139 /*
140 * We use maps to avoid reflection. Hopefully it should perform better
141 * this way.
|
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 com.sun.java.swing;
27
28 import sun.awt.EventQueueDelegate;
29 import sun.awt.AppContext;
30 import sun.awt.SunToolkit;
31
32 import java.util.Collections;
33 import java.util.Map;
34 import java.util.WeakHashMap;
35 import java.util.concurrent.Callable;
36 import java.applet.Applet;
37 import java.awt.AWTEvent;
38 import java.awt.EventQueue;
39 import java.awt.Component;
40 import java.awt.Container;
41 import java.awt.Window;
42 import javax.swing.JComponent;
43 import javax.swing.RepaintManager;
44
45 /**
46 * A collection of utility methods for Swing.
47 * <p>
48 * <b>WARNING:</b> While this class is public, it should not be treated as
49 * public API and its API may change in incompatable ways between dot dot
50 * releases and even patch releases. You should not rely on this class even
51 * existing.
102 }
103 }
104
105 /**
106 * Checks if vsync painting is requested for {@code rootContainer}
107 *
108 * @param rootContainer topmost container. Should be either Window or Applet
109 * @return {@code true} if vsync painting is requested for {@code rootContainer}
110 */
111 public static boolean isVsyncRequested(Container rootContainer) {
112 assert (rootContainer instanceof Applet) || (rootContainer instanceof Window);
113 return Boolean.TRUE == vsyncedMap.get(rootContainer);
114 }
115
116 /**
117 * Returns delegate {@code RepaintManager} for {@code component} hierarchy.
118 */
119 public static RepaintManager getDelegateRepaintManager(Component
120 component) {
121 RepaintManager delegate = null;
122 if (Boolean.TRUE == SunToolkit.targetToAppContext(component)
123 .get(DELEGATE_REPAINT_MANAGER_KEY)) {
124 while (delegate == null && component != null) {
125 while (component != null
126 && ! (component instanceof JComponent)) {
127 component = component.getParent();
128 }
129 if (component != null) {
130 delegate = (RepaintManager)
131 ((JComponent) component)
132 .getClientProperty(DELEGATE_REPAINT_MANAGER_KEY);
133 component = component.getParent();
134 }
135
136 }
137 }
138 return delegate;
139 }
140
141 /*
142 * We use maps to avoid reflection. Hopefully it should perform better
143 * this way.
|