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Diffstat (limited to 'libjava/javax/swing/plaf/basic/BasicViewportUI.java')
| -rw-r--r-- | libjava/javax/swing/plaf/basic/BasicViewportUI.java | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/libjava/javax/swing/plaf/basic/BasicViewportUI.java b/libjava/javax/swing/plaf/basic/BasicViewportUI.java deleted file mode 100644 index 5f9ba6c3b1e..00000000000 --- a/libjava/javax/swing/plaf/basic/BasicViewportUI.java +++ /dev/null @@ -1,235 +0,0 @@ -/* BasicViewportUI.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.plaf.basic; - -import java.awt.Component; -import java.awt.Dimension; -import java.awt.Graphics; -import java.awt.Image; -import java.awt.Point; -import java.awt.Rectangle; -import java.awt.image.ImageObserver; - -import javax.swing.JComponent; -import javax.swing.JViewport; -import javax.swing.ViewportLayout; -import javax.swing.event.ChangeEvent; -import javax.swing.event.ChangeListener; -import javax.swing.plaf.ComponentUI; -import javax.swing.plaf.ViewportUI; - -public class BasicViewportUI extends ViewportUI -{ - - ChangeListener changeListener; - Image backingStoreImage; - int backingStoreWidth = -1; - int backingStoreHeight = -1; - - class ChangeHandler implements ChangeListener - { - public void stateChanged(ChangeEvent event) - { - JViewport v = (JViewport) event.getSource(); - v.repaint(); - } - } - - void installDefaults(JComponent c) - { - c.setOpaque(true); - } - - void uninstallDefaults(JComponent c) - { - } - - void installListeners(JComponent c) - { - ((JViewport)c).addChangeListener(changeListener); - } - - void uninstallListeners(JComponent c) - { - ((JViewport)c).removeChangeListener(changeListener); - } - - public BasicViewportUI() - { - changeListener = new ChangeHandler(); - } - - public static ComponentUI createUI(JComponent c) - { - return new BasicViewportUI(); - } - - public void installUI(JComponent c) - { - super.installUI(c); - c.setLayout(new ViewportLayout()); - installListeners(c); - } - - public void uninstallUI(JComponent c) - { - uninstallListeners(c); - } - - - public Dimension getPreferredSize(JComponent c) - { - // let the ViewportLayout decide - return null; - } - - public void paint(Graphics g, JComponent c) - { - JViewport port = (JViewport)c; - Component view = port.getView(); - - if (view == null) - return; - - Point pos = port.getViewPosition(); - Rectangle viewBounds = view.getBounds(); - Rectangle portBounds = port.getBounds(); - - if (viewBounds.width == 0 - || viewBounds.height == 0 - || portBounds.width == 0 - || portBounds.height == 0) - return; - - switch (port.getScrollMode()) - { - - case JViewport.BACKINGSTORE_SCROLL_MODE: - paintBackingStore(g, port, view, pos, viewBounds, portBounds); - break; - - case JViewport.BLIT_SCROLL_MODE: - // FIXME: implement separate blit mode - - case JViewport.SIMPLE_SCROLL_MODE: - default: - paintSimple(g, port, view, pos, viewBounds, portBounds); - break; - } - } - - private void paintSimple(Graphics g, - JViewport v, - Component view, - Point pos, - Rectangle viewBounds, - Rectangle portBounds) - { - Rectangle oldClip = g.getClipBounds (); - g.setClip (oldClip.intersection (viewBounds)); - g.translate (-pos.x, -pos.y); - try - { - view.paint(g); - } - finally - { - g.translate (pos.x, pos.y); - g.setClip (oldClip); - } - } - - private void paintBackingStore(Graphics g, - JViewport v, - Component view, - Point pos, - Rectangle viewBounds, - Rectangle portBounds) - { - if (backingStoreImage == null - || backingStoreWidth != viewBounds.width - || backingStoreHeight != viewBounds.height) - { - backingStoreImage = v.createImage(viewBounds.width, viewBounds.height); - backingStoreWidth = viewBounds.width; - backingStoreHeight = viewBounds.height; - } - - Graphics g2 = backingStoreImage.getGraphics(); - - if (v.getBackground() != null) - { - // fill the backing store background - java.awt.Color save = g2.getColor(); - g2.setColor(v.getBackground()); - g2.fillRect (0, 0, backingStoreWidth, backingStoreHeight); - g2.setColor(save); - - // fill the viewport background - save = g.getColor(); - g.setColor(v.getBackground()); - g.fillRect (0, 0, portBounds.width, portBounds.height); - g.setColor(save); - - } - else - { - // clear the backing store background - g2.clearRect(0, 0, backingStoreWidth, backingStoreHeight); - - // clear the viewport background - g.clearRect(0, 0, portBounds.width, portBounds.height); - } - - g2.setClip(g.getClipBounds()); - g2.translate(-pos.x, -pos.y); - try - { - view.paint(g2); - } - finally - { - g2.translate(pos.x, pos.y); - } - g2 = null; - g.drawImage(backingStoreImage, - 0, 0, - (ImageObserver)null); - } -} |
