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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/javax/swing/plaf/basic/BasicDesktopIconUI.java
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+/* BasicDesktopIconUI.java --
+ Copyright (C) 2004, 2005 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.BorderLayout;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Insets;
+import java.awt.Rectangle;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseEvent;
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.PropertyVetoException;
+
+import javax.swing.Icon;
+import javax.swing.JButton;
+import javax.swing.JComponent;
+import javax.swing.JDesktopPane;
+import javax.swing.JInternalFrame;
+import javax.swing.JInternalFrame.JDesktopIcon;
+import javax.swing.SwingConstants;
+import javax.swing.border.Border;
+import javax.swing.event.MouseInputAdapter;
+import javax.swing.event.MouseInputListener;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.DesktopIconUI;
+
+/**
+ * This class acts as the UI delegate for JDesktopIcons for the Basic look and feel.
+ */
+public class BasicDesktopIconUI extends DesktopIconUI
+{
+ /**
+ * This helper class handles mouse events that occur on the JDesktopIcon.
+ */
+ public class MouseInputHandler extends MouseInputAdapter
+ {
+ /** The x offset from the MouseEvent coordinates to the top left corner. */
+ private transient int xOffset;
+
+ /** The y offset fromt he MouseEvent coordinates to the top left corner. */
+ private transient int yOffset;
+
+ /** A cached value of the JDesktopPane that parents this JDesktopIcon. */
+ private transient JDesktopPane pane;
+
+ /**
+ * This method is called when the mouse is dragged in the JDesktopIcon.
+ *
+ * @param e The MouseEvent.
+ */
+ public void mouseDragged(MouseEvent e)
+ {
+ Rectangle b = desktopIcon.getBounds();
+
+ moveAndRepaint(desktopIcon, b.x + e.getX() - xOffset,
+ b.y + e.getY() - yOffset, b.width, b.height);
+ }
+
+ /**
+ * This method is called when the mouse is moved in the JDesktopIcon.
+ *
+ * @param e The MouseEvent.
+ */
+ public void mouseMoved(MouseEvent e)
+ {
+ // Nothing to do.
+ }
+
+ /**
+ * This method is called when the mouse is pressed in the JDesktopIcon.
+ *
+ * @param e The MouseEvent.
+ */
+ public void mousePressed(MouseEvent e)
+ {
+ xOffset = e.getX();
+ yOffset = e.getY();
+ pane = frame.getDesktopPane();
+ if (pane != null)
+ pane.getDesktopManager().beginDraggingFrame(desktopIcon);
+ }
+
+ /**
+ * This method is called when the mouse is released in the JDesktopIcon.
+ *
+ * @param e The MouseEvent.
+ */
+ public void mouseReleased(MouseEvent e)
+ {
+ if (pane != null)
+ pane.getDesktopManager().endDraggingFrame(desktopIcon);
+ xOffset = 0;
+ yOffset = 0;
+ }
+
+ /**
+ * This method moves and repaints the JDesktopIcon to the given bounds.
+ *
+ * @param f The JComponent to move and repaint.
+ * @param newX The new x coordinate.
+ * @param newY The new y coordinate.
+ * @param newWidth The new width.
+ * @param newHeight The new height.
+ */
+ public void moveAndRepaint(JComponent f, int newX, int newY, int newWidth,
+ int newHeight)
+ {
+ if (pane != null)
+ pane.getDesktopManager().dragFrame(f, newX, newY);
+ else
+ desktopIcon.setBounds(newX, newY, newWidth, newHeight);
+ }
+ }
+
+ /**
+ * This class acts as the border for the JDesktopIcon.
+ */
+ private class DesktopIconBorder implements Border
+ {
+ /** The left inset value. */
+ int left = 10;
+
+ /** The top inset value. */
+ int top = 4;
+
+ /** The right inset value. */
+ int right = top;
+
+ /** The bottom inset value. */
+ int bottom = top;
+
+ /**
+ * This method returns the insets of the border.
+ *
+ * @param c The Component to find border insets for.
+ *
+ * @return The border insets.
+ */
+ public Insets getBorderInsets(Component c)
+ {
+ return new Insets(top, left, bottom, right);
+ }
+
+ /**
+ * This method returns whether the border is opaque.
+ *
+ * @return Whether the border is opaque.
+ */
+ public boolean isBorderOpaque()
+ {
+ return true;
+ }
+
+ /**
+ * This method paints the border.
+ *
+ * @param c The Component the border is in.
+ * @param g The Graphics object to paint with.
+ * @param x The x coordinate of the Component.
+ * @param y The y coordinate of the Component.
+ * @param width The width of the Component.
+ * @param height The height of the Component.
+ */
+ public void paintBorder(Component c, Graphics g, int x, int y, int width,
+ int height)
+ {
+ g.translate(x, y);
+ Color saved = g.getColor();
+
+ g.setColor(Color.LIGHT_GRAY);
+
+ g.fillRect(0, 0, left, height);
+ g.fillRect(0, 0, width, top);
+ g.fillRect(0, height - bottom, width, bottom);
+ g.fillRect(width - right, 0, right, height);
+
+ g.setColor(Color.BLACK);
+ g.drawRect(0, 0, width - 1, height - 1);
+
+ int fHeight = height / 4;
+ int hLeft = left / 2;
+
+ g.setColor(Color.BLACK);
+ g.fillRect(hLeft, fHeight, 2, 2);
+ g.fillRect(hLeft, fHeight * 2, 2, 2);
+ g.fillRect(hLeft, fHeight * 3, 2, 2);
+
+ g.setColor(saved);
+ g.translate(-x, -y);
+ }
+ }
+
+ /** The static width and height of the iconSize. */
+ private static final int iconSize = 16;
+
+ /**
+ * This class represents the default frame icon when none
+ * is supplied by the JInternalFrame.
+ */
+ static class InternalFrameDefaultMenuIcon implements Icon
+ {
+ /**
+ * This returns the icon height.
+ *
+ * @return The icon height.
+ */
+ public int getIconHeight()
+ {
+ return iconSize;
+ }
+
+ /**
+ * This returns the icon width.
+ *
+ * @return The icon width.
+ */
+ public int getIconWidth()
+ {
+ return iconSize;
+ }
+
+ /**
+ * This method paints the icon.
+ *
+ * @param c The Component this icon belongs to.
+ * @param g The Graphics object to paint with.
+ * @param x The x coordinate to paint at.
+ * @param y The y coordinate to paint at.
+ */
+ public void paintIcon(Component c, Graphics g, int x, int y)
+ {
+ g.translate(x, y);
+ Color saved = g.getColor();
+
+ g.setColor(Color.BLUE);
+ g.fillRect(0, 0, iconSize, (int) ((double) iconSize / 3) + 1);
+
+ g.setColor(Color.WHITE);
+ g.fillRect(0, (int) ((double) iconSize / 3), iconSize, iconSize * 5 / 6);
+
+ g.setColor(Color.GRAY);
+ g.drawRect(0, 0, iconSize, iconSize);
+
+ g.setColor(saved);
+ g.translate(-x, -y);
+ }
+ }
+
+ /** The default JDesktopIcon width. */
+ private static final int iconWidth = 160;
+
+ /** The default JDesktopIcon height */
+ private static final int iconHeight = 35;
+
+ /** The JDesktopIcon this UI delegate represents. */
+ protected JDesktopIcon desktopIcon;
+
+ /** The JInternalFrame associated with the JDesktopIcon. */
+ protected JInternalFrame frame;
+
+ /** The MouseListener responsible for reacting to MouseEvents on the JDesktopIcon. */
+ private transient MouseInputListener mouseHandler;
+
+ /** The Button in the JDesktopIcon responsible for deiconifying it.
+ * This is package-private to avoid an accessor method. */
+ transient BoundButton button;
+
+ /** The PropertyChangeListener listening to the JDesktopIcon. */
+ private transient PropertyChangeListener propertyHandler;
+
+ /** The default icon used when no frame icon is given by the JInternalFrame. */
+ static Icon defaultIcon = new InternalFrameDefaultMenuIcon();
+
+ /**
+ * This is a helper class that is used in JDesktopIcon and gives the Button a predetermined size.
+ */
+ private class BoundButton extends JButton
+ {
+ /**
+ * Creates a new BoundButton object.
+ *
+ * @param title The title of the button.
+ */
+ public BoundButton(String title)
+ {
+ super(title);
+ }
+
+ /**
+ * This method returns a standard size (based on the defaults of the JDesktopIcon) and the insets.
+ *
+ * @return The preferred size of the JDesktopIcon.
+ */
+ public Dimension getPreferredSize()
+ {
+ Insets insets = desktopIcon.getInsets();
+ return new Dimension(iconWidth - insets.left - insets.right,
+ iconHeight - insets.top - insets.bottom);
+ }
+
+ /**
+ * This method returns the minimum size of the button.
+ *
+ * @return The minimum size of the button.
+ */
+ public Dimension getMinimumSize()
+ {
+ return getPreferredSize();
+ }
+
+ /**
+ * This method returns the maximum size of the button.
+ *
+ * @return The maximum size of the button.
+ */
+ public Dimension getMaximumSize()
+ {
+ return getPreferredSize();
+ }
+ }
+
+ /**
+ * Creates a new BasicDesktopIconUI object.
+ */
+ public BasicDesktopIconUI()
+ {
+ // Nothing to do here.
+ }
+
+ /**
+ * This method creates a new BasicDesktopIconUI for the given JComponent.
+ *
+ * @param c The JComponent to create a UI for.
+ *
+ * @return A new BasicDesktopIconUI.
+ */
+ public static ComponentUI createUI(JComponent c)
+ {
+ return new BasicDesktopIconUI();
+ }
+
+ /**
+ * This method installs the UI for the given JComponent.
+ *
+ * @param c The JComponent to install this UI for.
+ */
+ public void installUI(JComponent c)
+ {
+ if (c instanceof JDesktopIcon)
+ {
+ desktopIcon = (JDesktopIcon) c;
+ desktopIcon.setLayout(new BorderLayout());
+ frame = desktopIcon.getInternalFrame();
+
+ installDefaults();
+ installComponents();
+ installListeners();
+
+ desktopIcon.setOpaque(true);
+ }
+ }
+
+ /**
+ * This method uninstalls the UI for the given JComponent.
+ *
+ * @param c The JComponent to uninstall this UI for.
+ */
+ public void uninstallUI(JComponent c)
+ {
+ desktopIcon.setOpaque(false);
+
+ uninstallListeners();
+ uninstallComponents();
+ uninstallDefaults();
+
+ frame = null;
+ desktopIcon.setLayout(null);
+ desktopIcon = null;
+ }
+
+ /**
+ * This method installs the necessary sub components for the JDesktopIcon.
+ */
+ protected void installComponents()
+ {
+ // Try to create a button based on what the frame's
+ // state is currently
+ button = new BoundButton(frame.getTitle());
+ button.setHorizontalAlignment(SwingConstants.LEFT);
+ button.setHorizontalTextPosition(SwingConstants.TRAILING);
+
+ Icon use = frame.getFrameIcon();
+ if (use == null)
+ use = defaultIcon;
+ button.setIcon(use);
+
+ desktopIcon.add(button, SwingConstants.CENTER);
+ }
+
+ /**
+ * This method uninstalls the sub components for the JDesktopIcon.
+ */
+ protected void uninstallComponents()
+ {
+ desktopIcon.remove(button);
+
+ button = null;
+ }
+
+ /**
+ * This method installs the listeners needed by this UI.
+ */
+ protected void installListeners()
+ {
+ mouseHandler = createMouseInputListener();
+
+ desktopIcon.addMouseMotionListener(mouseHandler);
+ desktopIcon.addMouseListener(mouseHandler);
+
+ propertyHandler = new PropertyChangeListener()
+ {
+ public void propertyChange(PropertyChangeEvent e)
+ {
+ if (e.getPropertyName().equals(JInternalFrame.TITLE_PROPERTY))
+ button.setText(desktopIcon.getInternalFrame().getTitle());
+ else if (e.getPropertyName().equals(JInternalFrame.FRAME_ICON_PROPERTY))
+ {
+ Icon use = desktopIcon.getInternalFrame().getFrameIcon();
+ if (use == null)
+ use = defaultIcon;
+ button.setIcon(use);
+ }
+ desktopIcon.revalidate();
+ desktopIcon.repaint();
+ }
+ };
+ frame.addPropertyChangeListener(propertyHandler);
+
+ button.addActionListener(new ActionListener()
+ {
+ public void actionPerformed(ActionEvent e)
+ {
+ deiconize();
+ }
+ });
+ }
+
+ /**
+ * This method uninstalls the listeners needed by the UI.
+ */
+ protected void uninstallListeners()
+ {
+ // button is nulled so no need to remove it.
+
+ frame.removePropertyChangeListener(propertyHandler);
+ propertyHandler = null;
+
+ desktopIcon.removeMouseMotionListener(mouseHandler);
+ desktopIcon.removeMouseListener(mouseHandler);
+ }
+
+ /**
+ * This method installs the defaults for the JDesktopIcon.
+ */
+ protected void installDefaults()
+ {
+ // FIXME: Move border to defaults.
+ desktopIcon.setBorder(new DesktopIconBorder());
+ }
+
+ /**
+ * This method uninstalls the defaults for the JDesktopIcon.
+ */
+ protected void uninstallDefaults()
+ {
+ desktopIcon.setBorder(null);
+ }
+
+ /**
+ * This method creates a new MouseInputListener for the JDesktopIcon.
+ *
+ * @return A new MouseInputListener.
+ */
+ protected MouseInputListener createMouseInputListener()
+ {
+ return new MouseInputHandler();
+ }
+
+ /**
+ * This method returns the preferred size for the given JComponent.
+ *
+ * @param c The JComponent to find a preferred size for.
+ *
+ * @return The preferred size.
+ */
+ public Dimension getPreferredSize(JComponent c)
+ {
+ return new Dimension(iconWidth, iconHeight);
+ }
+
+ /**
+ * This method returns the minimum size for the given JComponent.
+ *
+ * @param c The JComponent to find a minimum size for.
+ *
+ * @return The minimum size.
+ */
+ public Dimension getMinimumSize(JComponent c)
+ {
+ return getPreferredSize(c);
+ }
+
+ /**
+ * This method returns the maximum size for the given JComponent.
+ *
+ * @param c The JComponent to find a maximum size for.
+ *
+ * @return The maximum size.
+ */
+ public Dimension getMaximumSize(JComponent c)
+ {
+ return getPreferredSize(c);
+ }
+
+ /**
+ * This method returns the insets of the given JComponent.
+ *
+ * @param c The JComponent to find insets for.
+ *
+ * @return The insets of the given JComponent.
+ */
+ public Insets getInsets(JComponent c)
+ {
+ return c.getInsets();
+ }
+
+ /**
+ * This method deiconizes the JInternalFrame associated with the JDesktopIcon.
+ */
+ public void deiconize()
+ {
+ try
+ {
+ frame.setIcon(false);
+ }
+ catch (PropertyVetoException pve)
+ {
+ // We do nothing if the attempt has been vetoed.
+ }
+ }
+}