1 /*
2 * Copyright (c) 1996, 2013, 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
307 * displayed by the scroll pane or not.
308 * @return the width of a vertical scrollbar in pixels
309 */
310 public int getVScrollbarWidth() {
311 int w = 0;
312 if (scrollbarDisplayPolicy != SCROLLBARS_NEVER) {
313 ScrollPanePeer peer = (ScrollPanePeer)this.peer;
314 if (peer != null) {
315 w = peer.getVScrollbarWidth();
316 }
317 }
318 return w;
319 }
320
321 /**
322 * Returns the <code>ScrollPaneAdjustable</code> object which
323 * represents the state of the vertical scrollbar.
324 * The declared return type of this method is
325 * <code>Adjustable</code> to maintain backward compatibility.
326 * @see java.awt.ScrollPaneAdjustable
327 */
328 public Adjustable getVAdjustable() {
329 return vAdjustable;
330 }
331
332 /**
333 * Returns the <code>ScrollPaneAdjustable</code> object which
334 * represents the state of the horizontal scrollbar.
335 * The declared return type of this method is
336 * <code>Adjustable</code> to maintain backward compatibility.
337 * @see java.awt.ScrollPaneAdjustable
338 */
339 public Adjustable getHAdjustable() {
340 return hAdjustable;
341 }
342
343 /**
344 * Scrolls to the specified position within the child component.
345 * A call to this method is only valid if the scroll pane contains
346 * a child. Specifying a position outside of the legal scrolling bounds
347 * of the child will scroll to the closest legal position.
348 * Legal bounds are defined to be the rectangle:
349 * x = 0, y = 0, width = (child width - view port width),
350 * height = (child height - view port height).
351 * This is a convenience method which interfaces with the Adjustable
352 * objects which represent the state of the scrollbars.
353 * @param x the x position to scroll to
354 * @param y the y position to scroll to
355 * @throws NullPointerException if the scrollpane does not contain
356 * a child
357 */
639
640 /**
641 * Enables/disables scrolling in response to movement of the mouse wheel.
642 * Wheel scrolling is enabled by default.
643 *
644 * @param handleWheel <code>true</code> if scrolling should be done
645 * automatically for a MouseWheelEvent,
646 * <code>false</code> otherwise.
647 * @see #isWheelScrollingEnabled
648 * @see java.awt.event.MouseWheelEvent
649 * @see java.awt.event.MouseWheelListener
650 * @since 1.4
651 */
652 public void setWheelScrollingEnabled(boolean handleWheel) {
653 wheelScrollingEnabled = handleWheel;
654 }
655
656 /**
657 * Indicates whether or not scrolling will take place in response to
658 * the mouse wheel. Wheel scrolling is enabled by default.
659 *
660 * @see #setWheelScrollingEnabled(boolean)
661 * @since 1.4
662 */
663 public boolean isWheelScrollingEnabled() {
664 return wheelScrollingEnabled;
665 }
666
667
668 /**
669 * Writes default serializable fields to stream.
670 */
671 private void writeObject(ObjectOutputStream s) throws IOException {
672 // 4352819: We only need this degenerate writeObject to make
673 // it safe for future versions of this class to write optional
674 // data to the stream.
675 s.defaultWriteObject();
676 }
677
678 /**
|
1 /*
2 * Copyright (c) 1996, 2014, 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
307 * displayed by the scroll pane or not.
308 * @return the width of a vertical scrollbar in pixels
309 */
310 public int getVScrollbarWidth() {
311 int w = 0;
312 if (scrollbarDisplayPolicy != SCROLLBARS_NEVER) {
313 ScrollPanePeer peer = (ScrollPanePeer)this.peer;
314 if (peer != null) {
315 w = peer.getVScrollbarWidth();
316 }
317 }
318 return w;
319 }
320
321 /**
322 * Returns the <code>ScrollPaneAdjustable</code> object which
323 * represents the state of the vertical scrollbar.
324 * The declared return type of this method is
325 * <code>Adjustable</code> to maintain backward compatibility.
326 * @see java.awt.ScrollPaneAdjustable
327 * @return the vertical scrollbar state
328 */
329 public Adjustable getVAdjustable() {
330 return vAdjustable;
331 }
332
333 /**
334 * Returns the <code>ScrollPaneAdjustable</code> object which
335 * represents the state of the horizontal scrollbar.
336 * The declared return type of this method is
337 * <code>Adjustable</code> to maintain backward compatibility.
338 * @see java.awt.ScrollPaneAdjustable
339 * @return the horizontal scrollbar state
340 */
341 public Adjustable getHAdjustable() {
342 return hAdjustable;
343 }
344
345 /**
346 * Scrolls to the specified position within the child component.
347 * A call to this method is only valid if the scroll pane contains
348 * a child. Specifying a position outside of the legal scrolling bounds
349 * of the child will scroll to the closest legal position.
350 * Legal bounds are defined to be the rectangle:
351 * x = 0, y = 0, width = (child width - view port width),
352 * height = (child height - view port height).
353 * This is a convenience method which interfaces with the Adjustable
354 * objects which represent the state of the scrollbars.
355 * @param x the x position to scroll to
356 * @param y the y position to scroll to
357 * @throws NullPointerException if the scrollpane does not contain
358 * a child
359 */
641
642 /**
643 * Enables/disables scrolling in response to movement of the mouse wheel.
644 * Wheel scrolling is enabled by default.
645 *
646 * @param handleWheel <code>true</code> if scrolling should be done
647 * automatically for a MouseWheelEvent,
648 * <code>false</code> otherwise.
649 * @see #isWheelScrollingEnabled
650 * @see java.awt.event.MouseWheelEvent
651 * @see java.awt.event.MouseWheelListener
652 * @since 1.4
653 */
654 public void setWheelScrollingEnabled(boolean handleWheel) {
655 wheelScrollingEnabled = handleWheel;
656 }
657
658 /**
659 * Indicates whether or not scrolling will take place in response to
660 * the mouse wheel. Wheel scrolling is enabled by default.
661 *
662 * @return {@code true} if the wheel scrolling enabled;
663 * otherwise {@code false}
664 *
665 * @see #setWheelScrollingEnabled(boolean)
666 * @since 1.4
667 */
668 public boolean isWheelScrollingEnabled() {
669 return wheelScrollingEnabled;
670 }
671
672
673 /**
674 * Writes default serializable fields to stream.
675 */
676 private void writeObject(ObjectOutputStream s) throws IOException {
677 // 4352819: We only need this degenerate writeObject to make
678 // it safe for future versions of this class to write optional
679 // data to the stream.
680 s.defaultWriteObject();
681 }
682
683 /**
|