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Updated MenuScroller with latest from https://tips4java.wordpress.com/2009/02/01/menu-scroller/
Reviewed its getMaximumItems method (now getMaximumDrawableMenuItems) so that it returns a 1/3rd less the max number, avoiding a bad crash on linuxes. Fixes #3174
This commit is contained in:
Federico Fissore
parent
d8b6619de0
commit
17598368ac
@ -3,43 +3,31 @@
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*/
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package processing.app.tools;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.Graphics;
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import javax.swing.*;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import javax.swing.event.PopupMenuEvent;
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import javax.swing.event.PopupMenuListener;
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import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import javax.swing.Icon;
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import javax.swing.JComponent;
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import javax.swing.JMenu;
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import javax.swing.JMenuItem;
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import javax.swing.JPopupMenu;
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import javax.swing.MenuSelectionManager;
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import javax.swing.Timer;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import javax.swing.event.PopupMenuEvent;
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import javax.swing.event.PopupMenuListener;
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import javax.swing.plaf.ButtonUI;
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/**
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* A class that provides scrolling capabilities to a long menu dropdown or
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* popup menu. A number of items can optionally be frozen at the top and/or
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* bottom of the menu.
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* <P>
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* <p/>
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* <B>Implementation note:</B> The default number of items to display
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* at a time is 15, and the default scrolling interval is 125 milliseconds.
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* <P>
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* <p/>
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*
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* @version 1.5.0 04/05/12
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* @author Darryl
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* @version 1.5.0 04/05/12
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*/
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public class MenuScroller {
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//private JMenu menu;
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private JPopupMenu menu;
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private Component[] menuItems;
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private MenuScrollItem upItem;
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@ -53,32 +41,13 @@ public class MenuScroller {
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private int firstIndex = 0;
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private int keepVisibleIndex = -1;
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private static int getMaximumItems(JPopupMenu menu) {
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JMenuItem test = new JMenuItem("test");
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ButtonUI ui = test.getUI();
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Dimension d = ui.getPreferredSize(test);
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double item_height = d.getHeight();
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//System.out.println("JMenuItem Height " + item_height);
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JMenuItem up = new JMenuItem(MenuIcon.UP);
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ui = up.getUI();
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d = ui.getPreferredSize(up);
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double icon_height = d.getHeight();
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//System.out.println("icon item height " + icon_height);
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double menu_border_height = 8.0; // kludge - how to detect this?
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double screen_height = java.awt.Toolkit.getDefaultToolkit().getScreenSize().getHeight();
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//System.out.println("screen height " + screen_height);
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int n = (int)((screen_height - icon_height * 2 - menu_border_height) / item_height);
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//System.out.println("max items " + n);
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return n;
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}
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/**
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* Registers a menu to be scrolled with the default number of items to
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* display at a time and the default scrolling interval.
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*
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*
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* @param menu the menu
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* @return the MenuScroller
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*/
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*/
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public static MenuScroller setScrollerFor(JMenu menu) {
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return new MenuScroller(menu);
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}
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@ -86,7 +55,7 @@ public class MenuScroller {
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/**
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* Registers a popup menu to be scrolled with the default number of items to
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* display at a time and the default scrolling interval.
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*
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*
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* @param menu the popup menu
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* @return the MenuScroller
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*/
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@ -97,8 +66,8 @@ public class MenuScroller {
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/**
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* Registers a menu to be scrolled with the default number of items to
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* display at a time and the specified scrolling interval.
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*
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* @param menu the menu
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*
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* @param menu the menu
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* @param scrollCount the number of items to display at a time
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* @return the MenuScroller
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* @throws IllegalArgumentException if scrollCount is 0 or negative
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@ -110,8 +79,8 @@ public class MenuScroller {
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/**
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* Registers a popup menu to be scrolled with the default number of items to
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* display at a time and the specified scrolling interval.
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*
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* @param menu the popup menu
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display at a time
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* @return the MenuScroller
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* @throws IllegalArgumentException if scrollCount is 0 or negative
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@ -123,10 +92,10 @@ public class MenuScroller {
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/**
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* Registers a menu to be scrolled, with the specified number of items to
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* display at a time and the specified scrolling interval.
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*
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* @param menu the menu
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*
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* @param menu the menu
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* @param scrollCount the number of items to be displayed at a time
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* @param interval the scroll interval, in milliseconds
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* @param interval the scroll interval, in milliseconds
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* @return the MenuScroller
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* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
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*/
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@ -137,10 +106,10 @@ public class MenuScroller {
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/**
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* Registers a popup menu to be scrolled, with the specified number of items to
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* display at a time and the specified scrolling interval.
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*
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* @param menu the popup menu
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to be displayed at a time
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* @param interval the scroll interval, in milliseconds
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* @param interval the scroll interval, in milliseconds
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* @return the MenuScroller
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* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
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*/
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@ -153,20 +122,20 @@ public class MenuScroller {
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* to display in the scrolling region, the specified scrolling interval,
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* and the specified numbers of items fixed at the top and bottom of the
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* menu.
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*
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* @param menu the menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0.
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*
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* @param menu the menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0.
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* @param bottomFixedCount the number of items to fix at the bottom. May be 0
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* @throws IllegalArgumentException if scrollCount or interval is 0 or
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* negative or if topFixedCount or bottomFixedCount is negative
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* @return the MenuScroller
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* @throws IllegalArgumentException if scrollCount or interval is 0 or
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* negative or if topFixedCount or bottomFixedCount is negative
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*/
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public static MenuScroller setScrollerFor(JMenu menu, int scrollCount, int interval,
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int topFixedCount, int bottomFixedCount) {
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int topFixedCount, int bottomFixedCount) {
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return new MenuScroller(menu, scrollCount, interval,
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topFixedCount, bottomFixedCount);
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topFixedCount, bottomFixedCount);
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}
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/**
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@ -174,50 +143,50 @@ public class MenuScroller {
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* to display in the scrolling region, the specified scrolling interval,
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* and the specified numbers of items fixed at the top and bottom of the
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* popup menu.
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0
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* @param bottomFixedCount the number of items to fix at the bottom. May be 0
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* @throws IllegalArgumentException if scrollCount or interval is 0 or
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* negative or if topFixedCount or bottomFixedCount is negative
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* @return the MenuScroller
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* @throws IllegalArgumentException if scrollCount or interval is 0 or
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* negative or if topFixedCount or bottomFixedCount is negative
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*/
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public static MenuScroller setScrollerFor(JPopupMenu menu, int scrollCount, int interval,
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int topFixedCount, int bottomFixedCount) {
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int topFixedCount, int bottomFixedCount) {
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return new MenuScroller(menu, scrollCount, interval,
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topFixedCount, bottomFixedCount);
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topFixedCount, bottomFixedCount);
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}
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/**
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* Constructs a <code>MenuScroller</code> that scrolls a menu with the
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* default number of items to display at a time, and default scrolling
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* interval.
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*
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*
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* @param menu the menu
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*/
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public MenuScroller(JMenu menu) {
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this(menu, -1);
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this(menu, 15);
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}
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/**
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* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
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* default number of items to display at a time, and default scrolling
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* interval.
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*
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*
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* @param menu the popup menu
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*/
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public MenuScroller(JPopupMenu menu) {
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this(menu, -1);
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this(menu, 15);
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}
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/**
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* Constructs a <code>MenuScroller</code> that scrolls a menu with the
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* specified number of items to display at a time, and default scrolling
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* interval.
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*
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* @param menu the menu
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*
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* @param menu the menu
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* @param scrollCount the number of items to display at a time
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* @throws IllegalArgumentException if scrollCount is 0 or negative
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*/
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@ -229,8 +198,8 @@ public class MenuScroller {
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* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
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* specified number of items to display at a time, and default scrolling
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* interval.
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*
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* @param menu the popup menu
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display at a time
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* @throws IllegalArgumentException if scrollCount is 0 or negative
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*/
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@ -242,10 +211,10 @@ public class MenuScroller {
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* Constructs a <code>MenuScroller</code> that scrolls a menu with the
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* specified number of items to display at a time, and specified scrolling
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* interval.
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*
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* @param menu the menu
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*
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* @param menu the menu
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* @param scrollCount the number of items to display at a time
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* @param interval the scroll interval, in milliseconds
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* @param interval the scroll interval, in milliseconds
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* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
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*/
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public MenuScroller(JMenu menu, int scrollCount, int interval) {
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@ -256,10 +225,10 @@ public class MenuScroller {
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* Constructs a <code>MenuScroller</code> that scrolls a popup menu with the
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* specified number of items to display at a time, and specified scrolling
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* interval.
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*
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* @param menu the popup menu
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display at a time
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* @param interval the scroll interval, in milliseconds
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* @param interval the scroll interval, in milliseconds
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* @throws IllegalArgumentException if scrollCount or interval is 0 or negative
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*/
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public MenuScroller(JPopupMenu menu, int scrollCount, int interval) {
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@ -271,17 +240,17 @@ public class MenuScroller {
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* specified number of items to display in the scrolling region, the
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* specified scrolling interval, and the specified numbers of items fixed at
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* the top and bottom of the menu.
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*
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* @param menu the menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0
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*
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* @param menu the menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0
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* @param bottomFixedCount the number of items to fix at the bottom. May be 0
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* @throws IllegalArgumentException if scrollCount or interval is 0 or
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* negative or if topFixedCount or bottomFixedCount is negative
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* negative or if topFixedCount or bottomFixedCount is negative
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*/
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public MenuScroller(JMenu menu, int scrollCount, int interval,
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int topFixedCount, int bottomFixedCount) {
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int topFixedCount, int bottomFixedCount) {
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this(menu.getPopupMenu(), scrollCount, interval, topFixedCount, bottomFixedCount);
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}
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@ -290,24 +259,23 @@ public class MenuScroller {
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* specified number of items to display in the scrolling region, the
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* specified scrolling interval, and the specified numbers of items fixed at
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* the top and bottom of the popup menu.
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0
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*
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* @param menu the popup menu
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* @param scrollCount the number of items to display in the scrolling portion
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* @param interval the scroll interval, in milliseconds
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* @param topFixedCount the number of items to fix at the top. May be 0
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* @param bottomFixedCount the number of items to fix at the bottom. May be 0
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* @throws IllegalArgumentException if scrollCount or interval is 0 or
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* negative or if topFixedCount or bottomFixedCount is negative
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* negative or if topFixedCount or bottomFixedCount is negative
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*/
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public MenuScroller(JPopupMenu menu, int scrollCount, int interval,
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int topFixedCount, int bottomFixedCount) {
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if(scrollCount == -1)
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scrollCount = getMaximumItems(menu)-topFixedCount-bottomFixedCount; // Autosize
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if(interval == -1)
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interval = 150; // Default value
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int topFixedCount, int bottomFixedCount) {
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int autoSizeScrollCount = getMaximumDrawableMenuItems();
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if (autoSizeScrollCount > scrollCount) {
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scrollCount = autoSizeScrollCount;
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}
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if (scrollCount <= 0 || interval <= 0) {
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throw new IllegalArgumentException("scrollCount and interval must be greater than 0");
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}
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@ -329,7 +297,7 @@ public class MenuScroller {
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/**
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* Returns the scroll interval in milliseconds
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*
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*
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* @return the scroll interval in milliseconds
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*/
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public int getInterval() {
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@ -338,7 +306,7 @@ public class MenuScroller {
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/**
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* Sets the scroll interval in milliseconds
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*
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*
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* @param interval the scroll interval in milliseconds
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* @throws IllegalArgumentException if interval is 0 or negative
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*/
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@ -362,7 +330,7 @@ public class MenuScroller {
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/**
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* Sets the number of items in the scrolling portion of the menu.
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*
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*
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* @param scrollCount the number of items to display at a time
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* @throws IllegalArgumentException if scrollCount is 0 or negative
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*/
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@ -376,7 +344,7 @@ public class MenuScroller {
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/**
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* Returns the number of items fixed at the top of the menu or popup menu.
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*
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*
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* @return the number of items
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*/
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public int getTopFixedCount() {
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@ -385,7 +353,7 @@ public class MenuScroller {
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/**
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* Sets the number of items to fix at the top of the menu or popup menu.
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*
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*
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* @param topFixedCount the number of items
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*/
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public void setTopFixedCount(int topFixedCount) {
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@ -399,7 +367,7 @@ public class MenuScroller {
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/**
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* Returns the number of items fixed at the bottom of the menu or popup menu.
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*
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*
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* @return the number of items
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*/
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public int getBottomFixedCount() {
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@ -408,7 +376,7 @@ public class MenuScroller {
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/**
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* Sets the number of items to fix at the bottom of the menu or popup menu.
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*
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*
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* @param bottomFixedCount the number of items
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*/
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public void setBottomFixedCount(int bottomFixedCount) {
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@ -427,8 +395,7 @@ public class MenuScroller {
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if (item == null) {
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keepVisibleIndex = -1;
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} else {
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int index = menu.getComponentIndex(item);
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keepVisibleIndex = index;
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keepVisibleIndex = menu.getComponentIndex(item);
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}
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}
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@ -459,56 +426,64 @@ public class MenuScroller {
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/**
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* Ensures that the <code>dispose</code> method of this MenuScroller is
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* called when there are no more refrences to it.
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*
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* @exception Throwable if an error occurs.
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*
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* @throws Throwable if an error occurs.
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* @see MenuScroller#dispose()
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*/
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@Override
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public void finalize() throws Throwable {
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super.finalize();
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dispose();
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}
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private void refreshMenu() {
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if (menuItems == null || menuItems.length == 0) {
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return;
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}
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if (menuItems != null && menuItems.length > 0) {
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firstIndex = Math.max(topFixedCount, firstIndex);
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firstIndex = Math.min(menuItems.length - bottomFixedCount - scrollCount, firstIndex);
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int newFirstIndex = Math.max(topFixedCount, firstIndex);
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newFirstIndex = Math.min(menuItems.length - bottomFixedCount - scrollCount, newFirstIndex);
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upItem.setEnabled(firstIndex > topFixedCount);
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downItem.setEnabled(firstIndex + scrollCount < menuItems.length - bottomFixedCount);
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if (newFirstIndex < 0) {
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return;
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}
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firstIndex = newFirstIndex;
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upItem.setEnabled(firstIndex > topFixedCount);
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downItem.setEnabled(firstIndex + scrollCount < menuItems.length - bottomFixedCount);
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menu.removeAll();
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for (int i = 0; i < topFixedCount; i++) {
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menu.add(menuItems[i]);
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}
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/*if (topFixedCount > 0) {
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menu.removeAll();
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for (int i = 0; i < topFixedCount; i++) {
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menu.add(menuItems[i]);
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}
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if (topFixedCount > 0) {
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menu.addSeparator();
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||||
}*/
|
||||
}
|
||||
|
||||
menu.add(upItem);
|
||||
for (int i = firstIndex; i < scrollCount + firstIndex; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
menu.add(downItem);
|
||||
menu.add(upItem);
|
||||
for (int i = firstIndex; i < scrollCount + firstIndex; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
menu.add(downItem);
|
||||
|
||||
/*if (bottomFixedCount > 0) {
|
||||
if (bottomFixedCount > 0) {
|
||||
menu.addSeparator();
|
||||
}*/
|
||||
for (int i = menuItems.length - bottomFixedCount; i < menuItems.length; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
}
|
||||
for (int i = menuItems.length - bottomFixedCount; i < menuItems.length; i++) {
|
||||
menu.add(menuItems[i]);
|
||||
}
|
||||
|
||||
JComponent parent = (JComponent) upItem.getParent();
|
||||
parent.revalidate();
|
||||
parent.repaint();
|
||||
JComponent parent = (JComponent) upItem.getParent();
|
||||
parent.revalidate();
|
||||
parent.repaint();
|
||||
}
|
||||
}
|
||||
|
||||
private int getMaximumDrawableMenuItems() {
|
||||
JMenuItem test = new JMenuItem("test");
|
||||
double itemHeight = test.getUI().getPreferredSize(test).getHeight();
|
||||
|
||||
JMenuItem arrowMenuItem = new JMenuItem(MenuIcon.UP);
|
||||
double arrowMenuItemHeight = arrowMenuItem.getUI().getPreferredSize(arrowMenuItem).getHeight();
|
||||
|
||||
double menuBorderHeight = 8.0; // kludge - how to detect this?
|
||||
double screenHeight = java.awt.Toolkit.getDefaultToolkit().getScreenSize().getHeight();
|
||||
|
||||
int maxItems = (int) ((screenHeight - arrowMenuItemHeight * 2 - menuBorderHeight) / itemHeight);
|
||||
maxItems -= maxItems / 3;
|
||||
return maxItems;
|
||||
}
|
||||
|
||||
private class MouseScrollListener implements MouseWheelListener {
|
||||
@ -518,7 +493,7 @@ public class MenuScroller {
|
||||
mwe.consume();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private class MenuScrollListener implements PopupMenuListener {
|
||||
|
||||
@Override
|
||||
@ -538,29 +513,10 @@ public class MenuScroller {
|
||||
|
||||
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)) {
|
||||
&& keepVisibleIndex <= menuItems.length - bottomFixedCount
|
||||
&& (keepVisibleIndex > firstIndex + scrollCount
|
||||
|| keepVisibleIndex < firstIndex)) {
|
||||
firstIndex = Math.min(firstIndex, keepVisibleIndex);
|
||||
firstIndex = Math.max(firstIndex, keepVisibleIndex - scrollCount + 1);
|
||||
}
|
||||
@ -577,7 +533,6 @@ public class MenuScroller {
|
||||
}
|
||||
}
|
||||
|
||||
@SuppressWarnings("serial")
|
||||
private class MenuScrollTimer extends Timer {
|
||||
|
||||
public MenuScrollTimer(final int increment, int interval) {
|
||||
@ -592,11 +547,10 @@ public class MenuScroller {
|
||||
}
|
||||
}
|
||||
|
||||
@SuppressWarnings("serial")
|
||||
private class MenuScrollItem extends JMenuItem
|
||||
implements ChangeListener {
|
||||
implements ChangeListener {
|
||||
|
||||
private MenuScrollTimer timer;
|
||||
private final MenuScrollTimer timer;
|
||||
|
||||
public MenuScrollItem(MenuIcon icon, int increment) {
|
||||
setIcon(icon);
|
||||
@ -620,7 +574,7 @@ public class MenuScroller {
|
||||
}
|
||||
}
|
||||
|
||||
private static enum MenuIcon implements Icon {
|
||||
private enum MenuIcon implements Icon {
|
||||
|
||||
UP(9, 1, 9),
|
||||
DOWN(1, 9, 1);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user