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Diffstat (limited to 'libjava/javax/swing/ViewportLayout.java')
| -rw-r--r-- | libjava/javax/swing/ViewportLayout.java | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/libjava/javax/swing/ViewportLayout.java b/libjava/javax/swing/ViewportLayout.java deleted file mode 100644 index 18b49125743..00000000000 --- a/libjava/javax/swing/ViewportLayout.java +++ /dev/null @@ -1,169 +0,0 @@ -/* ViewportLayout.java -- - Copyright (C) 2002, 2004 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 javax.swing; - -import java.awt.Component; -import java.awt.Container; -import java.awt.Dimension; -import java.awt.LayoutManager; -import java.awt.Point; -import java.awt.Rectangle; -import java.io.Serializable; - -/** - * ViewportLayout - * @author Andrew Selkirk - * @author Graydon Hoare - */ -public class ViewportLayout implements LayoutManager, Serializable -{ - private static final long serialVersionUID = -788225906076097229L; - - public ViewportLayout() - { - } - public void addLayoutComponent(String name, Component c) - { - } - public void removeLayoutComponent(Component c) - { - } - - public Dimension preferredLayoutSize(Container parent) - { - JViewport vp = (JViewport)parent; - Component view = vp.getView(); - if (view != null) - return view.getPreferredSize(); - else - return new Dimension(); - } - - public Dimension minimumLayoutSize(Container parent) - { - JViewport vp = (JViewport)parent; - Component view = vp.getView(); - if (view != null) - return view.getMinimumSize(); - else - return new Dimension(); - } - - /** - * Layout the view and viewport to respect the following rules. These are - * not precisely the rules described in sun's javadocs, but they are the - * rules which sun's swing implementation follows, if you watch its - * behavior: - * - * <ol> - * - * <li>If the port is larger than the view's minimum size, put the port - * at view position <code>(0,0)</code> and make the view's size equal to - * the port's.</li> - * - * <li>If the port is smaller than the view, leave the view at its - * minimum size. also, do not move the port, <em>unless</em> the port - * extends into space <em>past</em> the edge of the view. If so, move the - * port up or to the left, in view space, by the amount of empty space - * (keep the lower and right edges lined up)</li> - * - * </ol> - * - * @see JViewport#getViewSize - * @see JViewport#setViewSize - * @see JViewport#getViewPosition - * @see JViewport#setViewPosition - */ - - public void layoutContainer(Container parent) - { - // The way to interpret this function is basically to ignore the names - // of methods it calls, and focus on the variable names here. getViewRect - // doesn't, for example, return the view; it returns the port bounds in - // view space. Likwise setViewPosition doesn't reposition the view; it - // positions the port, in view coordinates. - - JViewport port = (JViewport) parent; - Component view = port.getView(); - - if (view == null) - return; - - // These dimensions and positions are in *view space*. Do not mix - // variables in here from port space (eg. parent.getBounds()). This - // function should be entirely in view space, because the methods on - // the viewport require inputs in view space. - - Rectangle portBounds = port.getViewRect(); - Dimension viewPref = view.getPreferredSize(); - Dimension viewMinimum = view.getMinimumSize(); - Point portLowerRight = new Point(portBounds.x + portBounds.width, - portBounds.y + portBounds.height); - - // vertical implementation of the above rules - if (portBounds.height >= viewMinimum.height) - { - portBounds.y = 0; - viewPref.height = portBounds.height; - } - else - { - viewPref.height = viewMinimum.height; - int overextension = portLowerRight.y - viewPref.height; - if (overextension > 0) - portBounds.y -= overextension; - } - - // horizontal implementation of the above rules - if (portBounds.width >= viewMinimum.width) - { - portBounds.x = 0; - viewPref.width = portBounds.width; - } - else - { - viewPref.width = viewMinimum.width; - int overextension = portLowerRight.x - viewPref.width; - if (overextension > 0) - portBounds.x -= overextension; - } - - port.setViewPosition(portBounds.getLocation()); - port.setViewSize(viewPref); - } -} |
