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author | Tom Tromey <tromey@redhat.com> | 2002-01-16 04:21:35 +0000 |
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committer | Tom Tromey <tromey@gcc.gnu.org> | 2002-01-16 04:21:35 +0000 |
commit | 3bd483f2a189ed92cefd9ad0cfa5f15fabdf1592 (patch) | |
tree | a0f126a62903beed11548538a3c963a7e0a7f669 /libjava/java/awt/EventQueue.java | |
parent | c342f12677626f2f683eb9ce43f1d3905105f231 (diff) | |
download | gcc-3bd483f2a189ed92cefd9ad0cfa5f15fabdf1592.zip gcc-3bd483f2a189ed92cefd9ad0cfa5f15fabdf1592.tar.gz gcc-3bd483f2a189ed92cefd9ad0cfa5f15fabdf1592.tar.bz2 |
Start of AWT merge with Classpath:
* Makefile.in: Rebuilt.
* Makefile.am (awt_java_source_files): Reference files in
gnu/java/awt, not gnu/gcj/awt.
* java/awt/image/BufferedImage.java: Updated copyright.
* java/awt/image/ComponentColorModel.java: Updated copyright.
* java/awt/image/ComponentSampleModel.java: Updated copyright.
* java/awt/image/DataBuffer.java: Updated copyright.
* java/awt/image/DataBufferByte.java: Updated copyright.
* java/awt/image/DataBufferInt.java: Updated copyright.
* java/awt/image/DataBufferUShort.java: Updated copyright.
* java/awt/image/IndexColorModel.java: Updated copyright.
* java/awt/image/PackedColorModel.java: Updated copyright.
* java/awt/image/Raster.java: Updated copyright.
* java/awt/image/RasterOp.java: Updated copyright.
* java/awt/image/SampleModel.java: Updated copyright.
* java/awt/image/SinglePixelPackedSampleModel.java: Updated copyright.
* java/awt/image/WritableRaster.java: Updated copyright.
* java/awt/color/ColorSpace.java: Updated copyright.
* java/awt/color/ICC_ColorSpace.java: Updated copyright
* java/awt/color/ICC_Profile.java: Updated copyright.
* java/awt/event/HierarchyBoundsAdapter.java: Updated copyright.
* java/awt/event/HierarchyBoundsListener.java: Updated copyright.
* java/awt/event/HierarchyEvent.java: Updated copyright.
* java/awt/event/HierarchyListener.java: Updated copyright.
* java/awt/geom/AffineTransform.java: Updated copyright.
* java/awt/geom/Dimension2D.java: Updated copyright.
* java/awt/geom/Ellipse2D.java: Updated copyright.
* java/awt/geom/IllegalPathStateException.java: Updated copyright.
* java/awt/geom/Line2D.java: Updated copyright.
* java/awt/geom/NoninvertibleTransformException.java: Updated
copyright.
* java/awt/geom/PathIterator.java: Updated copyright.
* java/awt/geom/Point2D.java: Updated copyright.
* java/awt/geom/Rectangle2D.java: Updated copyright.
* java/awt/geom/RectangularShape.java: Updated copyright.
* java/awt/geom/RoundRectangle2D.java: Updated copyright.
* java/awt/Toolkit.java: Updated import for file moves.
* java/awt/Rectangle.java: Updated copyright; added javadoc from
Classpath.
(hashCode): New method from Classpath.
* java/awt/Graphics2D.java: Updated copyright.
* java/awt/Transparency.java: Updated copyright.
* java/awt/Paint.java: Updated copyright.
* java/awt/Graphics.java: New version from Classpath.
* java/awt/EventDispatchThread.java: Updated copyright.
* java/awt/CardLayout.java (layoutContainer): Don't skip invisible
children.
(gotoComponent): Wrap around on next/previous.
* gnu/gcj/awt/BitMaskExtent.java: Removed.
* gnu/gcj/awt/Buffers.java: Removed.
* gnu/gcj/awt/ComponentDataBlitOp.java: Removed.
* gnu/gcj/awt/GLightweightPeer.java: Removed.
* gnu/java/awt/BitMaskExtent.java: Added.
* gnu/java/awt/Buffers.java: Added.
* gnu/java/awt/ComponentDataBlitOp.java: Added.
* gnu/java/awt/GLightweightPeer.java: Added.
* java/awt/geom/Line2D.java (clone): Ignore
CloneNotSupportedException.
* gnu/gcj/awt/GLightweightPeer.java (getColorModel): New method.
* java/awt/Frame.java: Merged with Classpath.
* java/awt/RenderingHints.java: Copyright update.
* java/awt/Paint.java: Copyright update.
* java/awt/image/DirectColorModel.java: Merged with Classpath.
* java/awt/image/ColorModel.java: Merged with Classpath.
* java/awt/Window.java (show): New Implementation from Classpath.
(isShowing): Use super.isShowing().
* java/awt/EventQueue.java: Merged with Classpath.
* java/awt/AWTEventMulticaster.java (save): Throw
RuntimeException.
(saveInternal): Likewise.
* java/awt/AWTEvent.java: Now implements Serializable.
* java/awt/Event.java: Copyright update.
* java/awt/peer/ComponentPeer.java: Merged with Classpath.
* java/awt/image/BufferedImage.java: Copyright update.
* java/awt/GraphicsConfiguration.java: Copyright update.
* java/awt/Component.java: (addNotify): Don't call
addNotifyContainerChildren().
(addNotifyContainerChildren): Removed.
(setPeer): New method from Classpath.
(setTreeLock): Likewise.
(setVisible): Rewrote.
(show): Use it.
(hide): Likewise.
(validate): Set `valid'.
(checkImage(Image,ImageObserver)): Implementation from Classpath.
(createImage(ImageProducer)): Likewise.
(prepareImage): Likewise.
* java/awt/Container.java (addImpl): Handle case where constraint
is not a String. Post event via system event queue.
(remove): Post event via system event queue.
(validateTree): Only validate child if it is invalid.
(getAlignmentX): Call super method as default.
(getAlignmentY): Likewise.
(addContainerListener): Now synchronized.
(removeContainerListener): Likewise.
(addNotifyContainerChildren): Now private.
* java/awt/ComponentOrientation.java: Updated copyright. Added
@author.
* java/awt/FlowLayout.java (serialVersionUID): New field.
(setAlignment): Better exception message.
(layoutContainer): Don't compute component's preferred size unless
we're going to use it.
* java/awt/BorderLayout.java (AFTER_LAST_LINE, AFTER_LINE_ENDS,
BEFORE_FIRST_LINE, BEFORE_LINE_BEGINS): New constants.
(firstLine, lastLine, firstItem, lastItem): New fields.
(addLayoutComponent): Handle case where constraints is null.
Also, handle relative locations.
(removeLayoutComponent): Handle relative locations.
(MIN, MAX, PREF): New constants.
(calcCompSize): New method.
(calcSize): New method.
(minimumLayoutSize): Use it.
(preferredLayoutSize): Likewise.
(maximumLayoutSize): Likewise.
(toString): Include more information.
(setBounds): New method.
(layoutContainer): Use libgcj implementation; extended to handle
relative locations.
From-SVN: r48896
Diffstat (limited to 'libjava/java/awt/EventQueue.java')
-rw-r--r-- | libjava/java/awt/EventQueue.java | 121 |
1 files changed, 89 insertions, 32 deletions
diff --git a/libjava/java/awt/EventQueue.java b/libjava/java/awt/EventQueue.java index 7037118..a47d34f 100644 --- a/libjava/java/awt/EventQueue.java +++ b/libjava/java/awt/EventQueue.java @@ -1,10 +1,28 @@ -/* Copyright (C) 2000, 2001 Free Software Foundation +/* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation - This file is part of libgcj. +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., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ package java.awt; @@ -18,13 +36,19 @@ import java.lang.reflect.InvocationTargetException; * Status: Believed complete, but untested. Check FIXME's. */ -/** @author Bryce McKinlay */ - +/** + * This class manages a queue of <code>AWTEvent</code> objects that + * are posted to it. The AWT system uses only one event queue for all + * events. + * + * @author Bryce McKinlay + * @author Aaron M. Renn (arenn@urbanophile.com) + */ public class EventQueue { private static final int INITIAL_QUEUE_DEPTH = 8; private AWTEvent[] queue = new AWTEvent[INITIAL_QUEUE_DEPTH]; - + private int next_in = 0; // Index where next event will be added to queue private int next_out = 0; // Index of next event to be removed from queue @@ -33,40 +57,68 @@ public class EventQueue private EventDispatchThread dispatchThread = new EventDispatchThread(this); + /** + * Initializes a new instance of <code>EventQueue</code>. + */ public EventQueue() { } - + + /** + * Returns the next event in the queue. This method will block until + * an event is available or until the thread is interrupted. + * + * @return The next event in the queue. + * + * @exception InterruptedException If this thread is interrupted while + * waiting for an event to be posted to the queue. + */ public synchronized AWTEvent getNextEvent() throws InterruptedException { if (next != null) return next.getNextEvent(); - + while (next_in == next_out) wait(); - + AWTEvent res = queue[next_out]; - + if (++next_out == queue.length) next_out = 0; return res; } - - /** @specnote Does not block. Returns null if there are no events on the + + /** + * Returns the next event in the queue without removing it from the queue. + * This method will block until an event is available or until the thread + * is interrupted. + * + * @return The next event in the queue. + * @specnote Does not block. Returns null if there are no events on the * queue. */ public synchronized AWTEvent peekEvent() { if (next != null) return next.peekEvent(); - + if (next_in != next_out) return queue[next_out]; else return null; } - - /** @specnote Does not block. Returns null if there are no matching events + + /** + * Returns the next event in the queue that has the specified id + * without removing it from the queue. + * This method will block until an event is available or until the thread + * is interrupted. + * + * @param id The event id to return. + * + * @return The next event in the queue. + * + * @specnote Does not block. Returns null if there are no matching events * on the queue. */ public synchronized AWTEvent peekEvent(int id) @@ -83,7 +135,12 @@ public class EventQueue } return null; } - + + /** + * Posts a new event to the queue. + * + * @param event The event to post to the queue. + */ public synchronized void postEvent(AWTEvent evt) { if (next != null) @@ -92,7 +149,7 @@ public class EventQueue return; } // FIXME: Security checks? - + /* Check for any events already on the queue with the same source and ID. */ int i = next_out; @@ -123,24 +180,24 @@ public class EventQueue queue[next_in] = evt; if (++next_in == queue.length) next_in = 0; - + if (next_in == next_out) { /* Queue is full. Extend it. */ AWTEvent[] oldQueue = queue; queue = new AWTEvent[queue.length * 2]; - + int len = oldQueue.length - next_out; System.arraycopy(oldQueue, next_out, queue, 0, len); if (next_out != 0) System.arraycopy(oldQueue, 0, queue, len, next_out); - + next_out = 0; next_in = oldQueue.length; } notify(); } - + /** @since JDK1.2 */ public static void invokeAndWait(Runnable runnable) throws InterruptedException, InvocationTargetException @@ -149,7 +206,7 @@ public class EventQueue Thread current = Thread.currentThread(); if (current == eq.dispatchThread) throw new Error("Can't call invokeAndWait from event dispatch thread"); - + InvocationEvent ie = new InvocationEvent(eq, runnable, current, true); @@ -160,11 +217,11 @@ public class EventQueue } Exception exception; - + if ((exception = ie.getException()) != null) throw new InvocationTargetException(exception); } - + /** @since JDK1.2 */ public static void invokeLater(Runnable runnable) { @@ -175,13 +232,13 @@ public class EventQueue eq.postEvent(ie); } - + public static boolean isDispatchThread() { EventQueue eq = Toolkit.getDefaultToolkit().getSystemEventQueue(); return (Thread.currentThread() == eq.dispatchThread); } - + /** Allows a custom EventQueue implementation to replace this one. * All pending events are transferred to the new queue. Calls to postEvent, * getNextEvent, and peekEvent are forwarded to the pushed queue until it @@ -201,21 +258,21 @@ public class EventQueue next = newEventQueue; newEventQueue.prev = this; } - + /** Transfer any pending events from this queue back to the parent queue that * was previously push()ed. Event dispatch from this queue is suspended. */ protected void pop() throws EmptyStackException { if (prev == null) throw new EmptyStackException(); - + // Don't synchronize both this and prev at the same time, or deadlock could // occur. synchronized (prev) { prev.next = null; } - + synchronized (this) { int i = next_out; @@ -228,7 +285,7 @@ public class EventQueue } } } - + protected void dispatchEvent(AWTEvent evt) { if (evt instanceof ActiveEvent) |