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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/awt/EventModifier.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/awt/EventModifier.java')
-rw-r--r-- | libjava/classpath/gnu/java/awt/EventModifier.java | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/EventModifier.java b/libjava/classpath/gnu/java/awt/EventModifier.java new file mode 100644 index 000000000..565fcbc32 --- /dev/null +++ b/libjava/classpath/gnu/java/awt/EventModifier.java @@ -0,0 +1,107 @@ +/* EventModifier.java -- tool for converting modifier bits to 1.4 syle + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.java.awt; + +import java.awt.event.InputEvent; + +public class EventModifier +{ + /** The mask for old events. */ + public static final int OLD_MASK = 0x3f; + + /** The mask for new events. */ + public static final int NEW_MASK = 0x3fc0; + + /** + * Non-instantiable. + */ + private EventModifier() + { + throw new InternalError(); + } + + /** + * Converts the old style modifiers (0x3f) to the new style (0xffffffc0). + * + * @param mod the modifiers to convert + * @return the adjusted modifiers + */ + public static int extend(int mod) + { + // Favor what we hope will be the common case. + if ((mod & OLD_MASK) == 0) + return mod; + if ((mod & InputEvent.SHIFT_MASK) != 0) + mod |= InputEvent.SHIFT_DOWN_MASK; + if ((mod & InputEvent.CTRL_MASK) != 0) + mod |= InputEvent.CTRL_DOWN_MASK; + if ((mod & InputEvent.META_MASK) != 0) + mod |= InputEvent.META_DOWN_MASK; + if ((mod & InputEvent.ALT_MASK) != 0) + mod |= InputEvent.ALT_DOWN_MASK; + if ((mod & InputEvent.BUTTON1_MASK) != 0) + mod |= InputEvent.BUTTON1_DOWN_MASK; + if ((mod & InputEvent.ALT_GRAPH_MASK) != 0) + mod |= InputEvent.ALT_GRAPH_DOWN_MASK; + return mod & ~OLD_MASK; + } + + /** + * Converts the new style modifiers (0xffffffc0) to the old style (0x3f). + * + * @param mod the modifiers to convert + * @return the adjusted modifiers + */ + public static int revert(int mod) + { + if ((mod & InputEvent.SHIFT_DOWN_MASK) != 0) + mod |= InputEvent.SHIFT_MASK; + if ((mod & InputEvent.CTRL_DOWN_MASK) != 0) + mod |= InputEvent.CTRL_MASK; + if ((mod & InputEvent.META_DOWN_MASK) != 0) + mod |= InputEvent.META_MASK; + if ((mod & InputEvent.ALT_DOWN_MASK) != 0) + mod |= InputEvent.ALT_MASK; + if ((mod & InputEvent.ALT_GRAPH_DOWN_MASK) != 0) + mod |= InputEvent.ALT_GRAPH_MASK; + if ((mod & InputEvent.BUTTON1_DOWN_MASK) != 0) + mod |= InputEvent.BUTTON1_MASK; + return mod & OLD_MASK; + } +} // class EventModifier |