mirror of
https://github.com/arduino/Arduino.git
synced 2025-02-17 11:54:33 +01:00
scrollable menu
This commit is contained in:
Federico Fissore
parent
73c8f1c4ab
commit
e1856b373c
@ -508,12 +508,14 @@ public class Editor extends JFrame implements RunnerListener {
|
||||
|
||||
if (sketchbookMenu == null) {
|
||||
sketchbookMenu = new JMenu(_("Sketchbook"));
|
||||
MenuScroller.setScrollerFor(sketchbookMenu);
|
||||
base.rebuildSketchbookMenu(sketchbookMenu);
|
||||
}
|
||||
fileMenu.add(sketchbookMenu);
|
||||
|
||||
if (examplesMenu == null) {
|
||||
examplesMenu = new JMenu(_("Examples"));
|
||||
MenuScroller.setScrollerFor(examplesMenu);
|
||||
base.rebuildExamplesMenu(examplesMenu);
|
||||
}
|
||||
fileMenu.add(examplesMenu);
|
||||
|
||||
633
app/src/processing/app/tools/MenuScroller.java
Normal file
633
app/src/processing/app/tools/MenuScroller.java
Normal file
@ -0,0 +1,633 @@
|
||||
/**
|
||||
* @(#)MenuScroller.java 1.5.0 04/02/12
|
||||
*/
|
||||
package processing.app.tools;
|
||||
|
||||
import java.awt.Color;
|
||||
import java.awt.Component;
|
||||
import java.awt.Dimension;
|
||||
import java.awt.Graphics;
|
||||
import java.awt.event.ActionEvent;
|
||||
import java.awt.event.ActionListener;
|
||||
import javax.swing.Icon;
|
||||
import javax.swing.JComponent;
|
||||
import javax.swing.JMenu;
|
||||
import javax.swing.JMenuItem;
|
||||
import javax.swing.JPopupMenu;
|
||||
import javax.swing.MenuSelectionManager;
|
||||
import javax.swing.Timer;
|
||||
import javax.swing.event.ChangeEvent;
|
||||
import javax.swing.event.ChangeListener;
|
||||
import javax.swing.event.PopupMenuEvent;
|
||||
import javax.swing.event.PopupMenuListener;
|
||||
import javax.swing.plaf.*;
|
||||
|
||||
/**
|
||||
* A class that provides scrolling capabilities to a long menu dropdown or
|
||||
* popup menu. A number of items can optionally be frozen at the top and/or
|
||||
* bottom of the menu.
|
||||
* <P>
|
||||
* <B>Implementation note:</B> The default number of items to display
|
||||
* at a time is 15, and the default scrolling interval is 125 milliseconds.
|
||||
* <P>
|
||||
*
|
||||
* @version 1.5.0 04/05/12
|
||||
* @author Darryl
|
||||
*/
|
||||
public class MenuScroller {
|
||||
|
||||
//private JMenu menu;
|
||||
private JPopupMenu menu;
|
||||
private Component[] menuItems;
|
||||
private MenuScrollItem upItem;
|
||||
private MenuScrollItem downItem;
|
||||
private final MenuScrollListener menuListener = new MenuScrollListener();
|
||||
private int scrollCount;
|
||||
private int interval;
|
||||
private int topFixedCount;
|
||||
private int bottomFixedCount;
|
||||
private int firstIndex = 0;
|
||||
private int keepVisibleIndex = -1;
|
||||
|
||||
private static int getMaximumItems(JPopupMenu menu) {
|
||||
JMenuItem test = new JMenuItem("test");
|
||||
ButtonUI ui = test.getUI();
|
||||
Dimension d = ui.getPreferredSize(test);
|
||||
double item_height = d.getHeight();
|
||||
//System.out.println("JMenuItem Height " + item_height);
|
||||
JMenuItem up = new JMenuItem(MenuIcon.UP);
|
||||
ui = up.getUI();
|
||||
d = ui.getPreferredSize(up);
|
||||
double icon_height = d.getHeight();
|
||||
//System.out.println("icon item height " + icon_height);
|
||||
double menu_border_height = 8.0; // kludge - how to detect this?
|
||||
double screen_height = java.awt.Toolkit.getDefaultToolkit().getScreenSize().getHeight();
|
||||
//System.out.println("screen height " + screen_height);
|
||||
int n = (int)((screen_height - icon_height * 2 - menu_border_height) / item_height);
|
||||
//System.out.println("max items " + n);
|
||||
return n;
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a menu to be scrolled with the default number of items to
|
||||
* display at a time and the default scrolling interval.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @return the MenuScroller
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JMenu menu) {
|
||||
return new MenuScroller(menu);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a popup menu to be scrolled with the default number of items to
|
||||
* display at a time and the default scrolling interval.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @return the MenuScroller
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JPopupMenu menu) {
|
||||
return new MenuScroller(menu);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a menu to be scrolled with the default number of items to
|
||||
* display at a time and the specified scrolling interval.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @return the MenuScroller
|
||||
* @throws IllegalArgumentException if scrollCount is 0 or negative
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JMenu menu, int scrollCount) {
|
||||
return new MenuScroller(menu, scrollCount);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a popup menu to be scrolled with the default number of items to
|
||||
* display at a time and the specified scrolling interval.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @return the MenuScroller
|
||||
* @throws IllegalArgumentException if scrollCount is 0 or negative
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JPopupMenu menu, int scrollCount) {
|
||||
return new MenuScroller(menu, scrollCount);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a menu to be scrolled, with the specified number of items to
|
||||
* display at a time and the specified scrolling interval.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @param scrollCount the number of items to be displayed at a time
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @return the MenuScroller
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JMenu menu, int scrollCount, int interval) {
|
||||
return new MenuScroller(menu, scrollCount, interval);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a popup menu to be scrolled, with the specified number of items to
|
||||
* display at a time and the specified scrolling interval.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @param scrollCount the number of items to be displayed at a time
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @return the MenuScroller
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JPopupMenu menu, int scrollCount, int interval) {
|
||||
return new MenuScroller(menu, scrollCount, interval);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a menu to be scrolled, with the specified number of items
|
||||
* to display in the scrolling region, the specified scrolling interval,
|
||||
* and the specified numbers of items fixed at the top and bottom of the
|
||||
* menu.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @param scrollCount the number of items to display in the scrolling portion
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @param topFixedCount the number of items to fix at the top. May be 0.
|
||||
* @param bottomFixedCount the number of items to fix at the bottom. May be 0
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or
|
||||
* negative or if topFixedCount or bottomFixedCount is negative
|
||||
* @return the MenuScroller
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JMenu menu, int scrollCount, int interval,
|
||||
int topFixedCount, int bottomFixedCount) {
|
||||
return new MenuScroller(menu, scrollCount, interval,
|
||||
topFixedCount, bottomFixedCount);
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a popup menu to be scrolled, with the specified number of items
|
||||
* to display in the scrolling region, the specified scrolling interval,
|
||||
* and the specified numbers of items fixed at the top and bottom of the
|
||||
* popup menu.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @param scrollCount the number of items to display in the scrolling portion
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @param topFixedCount the number of items to fix at the top. May be 0
|
||||
* @param bottomFixedCount the number of items to fix at the bottom. May be 0
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or
|
||||
* negative or if topFixedCount or bottomFixedCount is negative
|
||||
* @return the MenuScroller
|
||||
*/
|
||||
public static MenuScroller setScrollerFor(JPopupMenu menu, int scrollCount, int interval,
|
||||
int topFixedCount, int bottomFixedCount) {
|
||||
return new MenuScroller(menu, scrollCount, interval,
|
||||
topFixedCount, bottomFixedCount);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a menu with the
|
||||
* default number of items to display at a time, and default scrolling
|
||||
* interval.
|
||||
*
|
||||
* @param menu the menu
|
||||
*/
|
||||
public MenuScroller(JMenu menu) {
|
||||
this(menu, -1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
|
||||
* default number of items to display at a time, and default scrolling
|
||||
* interval.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
*/
|
||||
public MenuScroller(JPopupMenu menu) {
|
||||
this(menu, -1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a menu with the
|
||||
* specified number of items to display at a time, and default scrolling
|
||||
* interval.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @throws IllegalArgumentException if scrollCount is 0 or negative
|
||||
*/
|
||||
public MenuScroller(JMenu menu, int scrollCount) {
|
||||
this(menu, scrollCount, 150);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
|
||||
* specified number of items to display at a time, and default scrolling
|
||||
* interval.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @throws IllegalArgumentException if scrollCount is 0 or negative
|
||||
*/
|
||||
public MenuScroller(JPopupMenu menu, int scrollCount) {
|
||||
this(menu, scrollCount, 150);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a menu with the
|
||||
* specified number of items to display at a time, and specified scrolling
|
||||
* interval.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
|
||||
*/
|
||||
public MenuScroller(JMenu menu, int scrollCount, int interval) {
|
||||
this(menu, scrollCount, interval, 0, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
|
||||
* specified number of items to display at a time, and specified scrolling
|
||||
* interval.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
|
||||
*/
|
||||
public MenuScroller(JPopupMenu menu, int scrollCount, int interval) {
|
||||
this(menu, scrollCount, interval, 0, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a menu with the
|
||||
* specified number of items to display in the scrolling region, the
|
||||
* specified scrolling interval, and the specified numbers of items fixed at
|
||||
* the top and bottom of the menu.
|
||||
*
|
||||
* @param menu the menu
|
||||
* @param scrollCount the number of items to display in the scrolling portion
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @param topFixedCount the number of items to fix at the top. May be 0
|
||||
* @param bottomFixedCount the number of items to fix at the bottom. May be 0
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or
|
||||
* negative or if topFixedCount or bottomFixedCount is negative
|
||||
*/
|
||||
public MenuScroller(JMenu menu, int scrollCount, int interval,
|
||||
int topFixedCount, int bottomFixedCount) {
|
||||
this(menu.getPopupMenu(), scrollCount, interval, topFixedCount, bottomFixedCount);
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
|
||||
* specified number of items to display in the scrolling region, the
|
||||
* specified scrolling interval, and the specified numbers of items fixed at
|
||||
* the top and bottom of the popup menu.
|
||||
*
|
||||
* @param menu the popup menu
|
||||
* @param scrollCount the number of items to display in the scrolling portion
|
||||
* @param interval the scroll interval, in milliseconds
|
||||
* @param topFixedCount the number of items to fix at the top. May be 0
|
||||
* @param bottomFixedCount the number of items to fix at the bottom. May be 0
|
||||
* @throws IllegalArgumentException if scrollCount or interval is 0 or
|
||||
* negative or if topFixedCount or bottomFixedCount is negative
|
||||
*/
|
||||
public MenuScroller(JPopupMenu menu, int scrollCount, int interval,
|
||||
int topFixedCount, int bottomFixedCount) {
|
||||
|
||||
if(scrollCount == -1)
|
||||
scrollCount = getMaximumItems(menu)-topFixedCount-bottomFixedCount; // Autosize
|
||||
|
||||
if(interval == -1)
|
||||
interval = 150; // Default value
|
||||
|
||||
if (scrollCount <= 0 || interval <= 0) {
|
||||
throw new IllegalArgumentException("scrollCount and interval must be greater than 0");
|
||||
}
|
||||
if (topFixedCount < 0 || bottomFixedCount < 0) {
|
||||
throw new IllegalArgumentException("topFixedCount and bottomFixedCount cannot be negative");
|
||||
}
|
||||
|
||||
upItem = new MenuScrollItem(MenuIcon.UP, -1);
|
||||
downItem = new MenuScrollItem(MenuIcon.DOWN, +1);
|
||||
setScrollCount(scrollCount);
|
||||
setInterval(interval);
|
||||
setTopFixedCount(topFixedCount);
|
||||
setBottomFixedCount(bottomFixedCount);
|
||||
|
||||
this.menu = menu;
|
||||
menu.addPopupMenuListener(menuListener);
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the scroll interval in milliseconds
|
||||
*
|
||||
* @return the scroll interval in milliseconds
|
||||
*/
|
||||
public int getInterval() {
|
||||
return interval;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the scroll interval in milliseconds
|
||||
*
|
||||
* @param interval the scroll interval in milliseconds
|
||||
* @throws IllegalArgumentException if interval is 0 or negative
|
||||
*/
|
||||
public void setInterval(int interval) {
|
||||
if (interval <= 0) {
|
||||
throw new IllegalArgumentException("interval must be greater than 0");
|
||||
}
|
||||
upItem.setInterval(interval);
|
||||
downItem.setInterval(interval);
|
||||
this.interval = interval;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the number of items in the scrolling portion of the menu.
|
||||
*
|
||||
* @return the number of items to display at a time
|
||||
*/
|
||||
public int getscrollCount() {
|
||||
return scrollCount;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the number of items in the scrolling portion of the menu.
|
||||
*
|
||||
* @param scrollCount the number of items to display at a time
|
||||
* @throws IllegalArgumentException if scrollCount is 0 or negative
|
||||
*/
|
||||
public void setScrollCount(int scrollCount) {
|
||||
if (scrollCount <= 0) {
|
||||
throw new IllegalArgumentException("scrollCount must be greater than 0");
|
||||
}
|
||||
this.scrollCount = scrollCount;
|
||||
MenuSelectionManager.defaultManager().clearSelectedPath();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the number of items fixed at the top of the menu or popup menu.
|
||||
*
|
||||
* @return the number of items
|
||||
*/
|
||||
public int getTopFixedCount() {
|
||||
return topFixedCount;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the number of items to fix at the top of the menu or popup menu.
|
||||
*
|
||||
* @param topFixedCount the number of items
|
||||
*/
|
||||
public void setTopFixedCount(int topFixedCount) {
|
||||
if (firstIndex <= topFixedCount) {
|
||||
firstIndex = topFixedCount;
|
||||
} else {
|
||||
firstIndex += (topFixedCount - this.topFixedCount);
|
||||
}
|
||||
this.topFixedCount = topFixedCount;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the number of items fixed at the bottom of the menu or popup menu.
|
||||
*
|
||||
* @return the number of items
|
||||
*/
|
||||
public int getBottomFixedCount() {
|
||||
return bottomFixedCount;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the number of items to fix at the bottom of the menu or popup menu.
|
||||
*
|
||||
* @param bottomFixedCount the number of items
|
||||
*/
|
||||
public void setBottomFixedCount(int bottomFixedCount) {
|
||||
this.bottomFixedCount = bottomFixedCount;
|
||||
}
|
||||
|
||||
/**
|
||||
* Scrolls the specified item into view each time the menu is opened. Call this method with
|
||||
* <code>null</code> to restore the default behavior, which is to show the menu as it last
|
||||
* appeared.
|
||||
*
|
||||
* @param item the item to keep visible
|
||||
* @see #keepVisible(int)
|
||||
*/
|
||||
public void keepVisible(JMenuItem item) {
|
||||
if (item == null) {
|
||||
keepVisibleIndex = -1;
|
||||
} else {
|
||||
int index = menu.getComponentIndex(item);
|
||||
keepVisibleIndex = index;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Scrolls the item at the specified index into view each time the menu is opened. Call this
|
||||
* method with <code>-1</code> to restore the default behavior, which is to show the menu as
|
||||
* it last appeared.
|
||||
*
|
||||
* @param index the index of the item to keep visible
|
||||
* @see #keepVisible(javax.swing.JMenuItem)
|
||||
*/
|
||||
public void keepVisible(int index) {
|
||||
keepVisibleIndex = index;
|
||||
}
|
||||
|
||||
/**
|
||||
* Removes this MenuScroller from the associated menu and restores the
|
||||
* default behavior of the menu.
|
||||
*/
|
||||
public void dispose() {
|
||||
if (menu != null) {
|
||||
menu.removePopupMenuListener(menuListener);
|
||||
menu = null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Ensures that the <code>dispose</code> method of this MenuScroller is
|
||||
* called when there are no more refrences to it.
|
||||
*
|
||||
* @exception Throwable if an error occurs.
|
||||
* @see MenuScroller#dispose()
|
||||
*/
|
||||
@Override
|
||||
public void finalize() throws Throwable {
|
||||
dispose();
|
||||
}
|
||||
|
||||
private void refreshMenu() {
|
||||
if (menuItems != null && menuItems.length > 0) {
|
||||
firstIndex = Math.max(topFixedCount, firstIndex);
|
||||
firstIndex = Math.min(menuItems.length - bottomFixedCount - scrollCount, firstIndex);
|
||||
|
||||
upItem.setEnabled(firstIndex > topFixedCount);
|
||||
downItem.setEnabled(firstIndex + scrollCount < menuItems.length - bottomFixedCount);
|
||||
|
||||
menu.removeAll();
|
||||
for (int i = 0; i < topFixedCount; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
/*if (topFixedCount > 0) {
|
||||
menu.addSeparator();
|
||||
}*/
|
||||
|
||||
menu.add(upItem);
|
||||
for (int i = firstIndex; i < scrollCount + firstIndex; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
menu.add(downItem);
|
||||
|
||||
/*if (bottomFixedCount > 0) {
|
||||
menu.addSeparator();
|
||||
}*/
|
||||
for (int i = menuItems.length - bottomFixedCount; i < menuItems.length; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
|
||||
JComponent parent = (JComponent) upItem.getParent();
|
||||
parent.revalidate();
|
||||
parent.repaint();
|
||||
}
|
||||
}
|
||||
|
||||
private class MenuScrollListener implements PopupMenuListener {
|
||||
|
||||
@Override
|
||||
public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
|
||||
setMenuItems();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
|
||||
restoreMenuItems();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void popupMenuCanceled(PopupMenuEvent e) {
|
||||
restoreMenuItems();
|
||||
}
|
||||
|
||||
private void setMenuItems() {
|
||||
menuItems = menu.getComponents();
|
||||
|
||||
// Hack for auto detect the topFixed total
|
||||
/*int topFixedCountPrev = topFixedCount;
|
||||
for(int i=menuItems.length-1;i>0;i--)
|
||||
{
|
||||
if(menuItems[i].getClass().getName().endsWith("Separator"))
|
||||
{
|
||||
System.out.println(i);
|
||||
setTopFixedCount(i+1);
|
||||
|
||||
if(topFixedCount!=topFixedCountPrev)
|
||||
{
|
||||
scrollCount = getMaximumItems()-topFixedCount;
|
||||
System.out.println(getMaximumItems()-topFixedCount);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}*/
|
||||
|
||||
if (keepVisibleIndex >= topFixedCount
|
||||
&& keepVisibleIndex <= menuItems.length - bottomFixedCount
|
||||
&& (keepVisibleIndex > firstIndex + scrollCount
|
||||
|| keepVisibleIndex < firstIndex)) {
|
||||
firstIndex = Math.min(firstIndex, keepVisibleIndex);
|
||||
firstIndex = Math.max(firstIndex, keepVisibleIndex - scrollCount + 1);
|
||||
}
|
||||
if (menuItems.length > topFixedCount + scrollCount + bottomFixedCount) {
|
||||
refreshMenu();
|
||||
}
|
||||
}
|
||||
|
||||
private void restoreMenuItems() {
|
||||
menu.removeAll();
|
||||
for (Component component : menuItems) {
|
||||
menu.add(component);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private class MenuScrollTimer extends Timer {
|
||||
|
||||
public MenuScrollTimer(final int increment, int interval) {
|
||||
super(interval, new ActionListener() {
|
||||
|
||||
@Override
|
||||
public void actionPerformed(ActionEvent e) {
|
||||
firstIndex += increment;
|
||||
refreshMenu();
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
private class MenuScrollItem extends JMenuItem
|
||||
implements ChangeListener {
|
||||
|
||||
private MenuScrollTimer timer;
|
||||
|
||||
public MenuScrollItem(MenuIcon icon, int increment) {
|
||||
setIcon(icon);
|
||||
setDisabledIcon(icon);
|
||||
timer = new MenuScrollTimer(increment, interval);
|
||||
addChangeListener(this);
|
||||
}
|
||||
|
||||
public void setInterval(int interval) {
|
||||
timer.setDelay(interval);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void stateChanged(ChangeEvent e) {
|
||||
if (isArmed() && !timer.isRunning()) {
|
||||
timer.start();
|
||||
}
|
||||
if (!isArmed() && timer.isRunning()) {
|
||||
timer.stop();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private static enum MenuIcon implements Icon {
|
||||
|
||||
UP(9, 1, 9),
|
||||
DOWN(1, 9, 1);
|
||||
final int[] xPoints = {1, 5, 9};
|
||||
final int[] yPoints;
|
||||
|
||||
MenuIcon(int... yPoints) {
|
||||
this.yPoints = yPoints;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void paintIcon(Component c, Graphics g, int x, int y) {
|
||||
Dimension size = c.getSize();
|
||||
Graphics g2 = g.create(size.width / 2 - 5, size.height / 2 - 5, 10, 10);
|
||||
g2.setColor(Color.GRAY);
|
||||
g2.drawPolygon(xPoints, yPoints, 3);
|
||||
if (c.isEnabled()) {
|
||||
g2.setColor(Color.BLACK);
|
||||
g2.fillPolygon(xPoints, yPoints, 3);
|
||||
}
|
||||
g2.dispose();
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getIconWidth() {
|
||||
return 0;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int getIconHeight() {
|
||||
return 10;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user