--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/awt/X11/XMouseDragGestureRecognizer.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,233 @@
+/*
+ * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.awt.X11;
+
+import java.awt.Toolkit;
+import java.awt.Component;
+
+import java.awt.Point;
+import java.awt.dnd.DnDConstants;
+import java.awt.dnd.DragSource;
+import java.awt.dnd.MouseDragGestureRecognizer;
+import java.awt.dnd.DragGestureListener;
+
+import java.awt.event.InputEvent;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.awt.event.MouseMotionListener;
+
+import java.lang.reflect.*;
+
+import sun.awt.dnd.SunDragSourceContextPeer;
+
+/**
+ * <p>
+ * This subclass of MouseDragGestureRecognizer defines a DragGestureRecognizer
+ * for Mouse based gestures on OSF/Motif.
+ * </p>
+ *
+ * @author Laurence P. G. Cable
+ *
+ * @see java.awt.dnd.DragGestureListener
+ * @see java.awt.dnd.DragGestureEvent
+ * @see java.awt.dnd.DragSource
+ */
+
+class XMouseDragGestureRecognizer extends MouseDragGestureRecognizer {
+
+ private static final long serialVersionUID = -841711780352520383L;
+
+ /*
+ * constant for number of pixels hysterisis before drag is determined
+ * to have started
+ */
+
+ protected static int motionThreshold;
+
+
+ protected static final int ButtonMask = InputEvent.BUTTON1_DOWN_MASK |
+ InputEvent.BUTTON2_DOWN_MASK |
+ InputEvent.BUTTON3_DOWN_MASK;
+
+ /**
+ * construct a new XMouseDragGestureRecognizer
+ *
+ * @param ds The DragSource for the Component c
+ * @param c The Component to observe
+ * @param act The actions permitted for this Drag
+ * @param dgl The DragGestureRecognizer to notify when a gesture is detected
+ *
+ */
+
+ protected XMouseDragGestureRecognizer(DragSource ds, Component c, int act, DragGestureListener dgl) {
+ super(ds, c, act, dgl);
+ }
+
+ /**
+ * construct a new XMouseDragGestureRecognizer
+ *
+ * @param ds The DragSource for the Component c
+ * @param c The Component to observe
+ * @param act The actions permitted for this Drag
+ */
+
+ protected XMouseDragGestureRecognizer(DragSource ds, Component c, int act) {
+ this(ds, c, act, null);
+ }
+
+ /**
+ * construct a new XMouseDragGestureRecognizer
+ *
+ * @param ds The DragSource for the Component c
+ * @param c The Component to observe
+ */
+
+ protected XMouseDragGestureRecognizer(DragSource ds, Component c) {
+ this(ds, c, DnDConstants.ACTION_NONE);
+ }
+
+ /**
+ * construct a new XMouseDragGestureRecognizer
+ *
+ * @param ds The DragSource for the Component c
+ */
+
+ protected XMouseDragGestureRecognizer(DragSource ds) {
+ this(ds, null);
+ }
+
+ /**
+ * determine the drop action from the event
+ */
+
+ protected int mapDragOperationFromModifiers(MouseEvent e) {
+ int mods = e.getModifiersEx();
+ int btns = mods & ButtonMask;
+
+ // Do not allow right mouse button drag since Motif DnD does not
+ // terminate drag operation on right mouse button release.
+ if (!(btns == InputEvent.BUTTON1_DOWN_MASK ||
+ btns == InputEvent.BUTTON2_DOWN_MASK)) {
+ return DnDConstants.ACTION_NONE;
+ }
+
+ return
+ SunDragSourceContextPeer.convertModifiersToDropAction(mods,
+ getSourceActions());
+ }
+
+ /**
+ * Invoked when the mouse has been clicked on a component.
+ */
+
+ public void mouseClicked(MouseEvent e) {
+ // do nothing
+ }
+
+ /**
+ * Invoked when a mouse button has been pressed on a component.
+ */
+
+ public void mousePressed(MouseEvent e) {
+ events.clear();
+
+ if (mapDragOperationFromModifiers(e) != DnDConstants.ACTION_NONE) {
+ try {
+ motionThreshold = DragSource.getDragThreshold();
+ } catch (Exception exc) {
+ motionThreshold = 5;
+ }
+ appendEvent(e);
+ }
+ }
+
+ /**
+ * Invoked when a mouse button has been released on a component.
+ */
+
+ public void mouseReleased(MouseEvent e) {
+ events.clear();
+ }
+
+ /**
+ * Invoked when the mouse enters a component.
+ */
+
+ public void mouseEntered(MouseEvent e) {
+ events.clear();
+ }
+
+ /**
+ * Invoked when the mouse exits a component.
+ */
+
+ public void mouseExited(MouseEvent e) {
+ if (!events.isEmpty()) { // gesture pending
+ int dragAction = mapDragOperationFromModifiers(e);
+
+ if (dragAction == DnDConstants.ACTION_NONE) {
+ events.clear();
+ }
+ }
+ }
+
+ /**
+ * Invoked when a mouse button is pressed on a component.
+ */
+
+ public void mouseDragged(MouseEvent e) {
+ if (!events.isEmpty()) { // gesture pending
+ int dop = mapDragOperationFromModifiers(e);
+
+
+ if (dop == DnDConstants.ACTION_NONE) {
+ return;
+ }
+
+ MouseEvent trigger = (MouseEvent)events.get(0);
+
+ Point origin = trigger.getPoint();
+ Point current = e.getPoint();
+
+ int dx = Math.abs(origin.x - current.x);
+ int dy = Math.abs(origin.y - current.y);
+
+ if (dx > motionThreshold || dy > motionThreshold) {
+ fireDragGestureRecognized(dop, ((MouseEvent)getTriggerEvent()).getPoint());
+ } else
+ appendEvent(e);
+ }
+ }
+
+ /**
+ * Invoked when the mouse button has been moved on a component
+ * (with no buttons no down).
+ */
+
+ public void mouseMoved(MouseEvent e) {
+ // do nothing
+ }
+}