我需要在JCalendar应用程序中更改所选日期的颜色。 问题是：我看了一下JCalendar的源代码，我没有看到任何改变颜色的方法。
Lemme看看我能否在这里更清楚......
JCalendar有特殊日期，
JXMonthView有标记日期，
但他们都没有办法改变特定日子的颜色。
如果我想选择他们的颜色，我必须做这样的事情：
jxMonthView = new JXMonthView(new Locale("pt_BR")) {
private static final long serialVersionUID = 1L;
Color currentColor = null;
@Override
public boolean isFlaggedDate(Date date) {
if (!dataLoaded)
return super.isFlaggedDate(date);
try {
StackTraceElement[] stackTrace = new Throwable()
.getStackTrace();
if (stackTrace[1].getClassName().contains(
"CalendarCellContext")) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
DiaUtil diaUtil = listener.getDiaUtil(cal);
if (diaUtil != null) {
if (diaUtil.getValor() == 0) {
currentColor = Color.RED;
} else if (diaUtil.getValor() < 1) {
currentColor = Color.YELLOW;
}
} else {
}
}
} catch (Exception e) {
}
return super.isFlaggedDate(date);
}
@Override
public Color getFlaggedDayForeground() {
if (currentColor == null) {
return super.getFlaggedDayForeground();
}
return currentColor;
}
};
有关如何改变颜色的任何想法？ 或者用另一种方式代替使用JCalendar？
答案 0 :(得分：1)
这是java提供的日历演示
/*
* $Id: DemoCalendarRenderingHandler.java 1170 2009-11-04 14:01:25Z kleopatra $
*
* Copyright 2009 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
package org.jdesktop.swingx.plaf.basic;
import java.util.Calendar;
import javax.swing.JComponent;
import org.jdesktop.swingx.JXMonthView;
import org.jdesktop.swingx.decorator.CompoundHighlighter;
import org.jdesktop.swingx.decorator.Highlighter;
/**
* An example of a custom CalendarRenderingHandler. As of laziness (mine :-) this
* extends the BasicXX to widen access and provide hooks to add Highlighters.
*
* @author Jeanette Winzenburg
*/
public class DemoCalendarRenderingHandler extends BasicCalendarRenderingHandler {
private DemoCalendarAdapter adapter;
private CompoundHighlighter demoHighlighter;
/**
* Sets the <code>Highlighter</code>s to the table, replacing any old settings.
* None of the given Highlighters must be null.<p>
*
* @param highlighters zero or more not null highlighters to use for renderer decoration.
* @throws NullPointerException if array is null or array contains null values.
*/
// <snip> Custom CalendarRenderingHandler
// Minimal api to allow adding Highlighters.
public void setHighlighters(Highlighter... highlighters) {
getHighlighter().setHighlighters(highlighters);
}
// </snip>
/**
* Appends the <code>Highlighter</code>s to the end of the list of used
* <code>Highlighter</code>s. None of the given Highlighters must be null.
* <p>
*
* @param highlighters zero or more not null highlighters to use for renderer decoration.
* @throws NullPointerException if array is null or array contains null values.
*/
// <snip> Custom CalendarRenderingHandler
// Minimal api to allow adding Highlighters.
public void addHighlighters(Highlighter... highlighters) {
for (Highlighter highlighter : highlighters) {
getHighlighter().addHighlighter(highlighter);
}
}
// </snip>
/**
* Overridden to apply the additional highlighters, if any.
*/
@Override
public JComponent prepareRenderingComponent(JXMonthView monthView,
Calendar calendar, CalendarState dayState) {
JComponent component = super.prepareRenderingComponent(monthView, calendar, dayState);
return (JComponent) getHighlighter().highlight(
component, getCalendarAdapter(monthView, calendar, dayState));
}
/**
* Returns a CompoundHighlighter containing the additional highlighters, if
* any.
*
* @return a CompoundHighlighter containing the additional higlighters,
* guaranteed to never be null, but might be empty.
*/
protected CompoundHighlighter getHighlighter() {
if (demoHighlighter == null) {
demoHighlighter = new CompoundHighlighter();
}
return demoHighlighter;
}
/**
* Returns a CalendarAdapter installed with the given monthView and
* state.
*
* @param monthView
* @param calendar
* @param dayState
* @return
*/
protected DemoCalendarAdapter getCalendarAdapter(JXMonthView monthView,
Calendar calendar, CalendarState dayState) {
if (adapter == null) {
adapter = new DemoCalendarAdapter(monthView);
}
return adapter.install(calendar, dayState);
}
/**
* CalendarAdapter, subclassed for public access and fix of selected
* day state.
*
*/
public static class DemoCalendarAdapter extends CalendarAdapter {
/**
* Instantiates a ComponentAdapter with the given monthView.
*
* @param component
*/
public DemoCalendarAdapter(JXMonthView component) {
super(component);
}
/**
* {@inheritDoc} <p>
*
* Overridden to return a publicly accessible class.
*/
@Override
public DemoCalendarAdapter install(Calendar calendar, CalendarState dayState) {
return (DemoCalendarAdapter) super.install(calendar, dayState);
}
/**
* {@inheritDoc} <p>
*
* Overridden to report selected only if a day of the month.
*/
@Override
public boolean isSelected() {
// PENDING JW: this should be handled in super
if (!isDayInMonth()) return false;
return super.isSelected();
}
/**
* Returns a clone of the current calendar.
* @return
*/
public Calendar getCalendar() {
// PENDING JW: this should be handled in super
return (Calendar) calendar.clone();
}
/**
* @param dayState
* @return
*/
public boolean isDayInMonth() {
return (CalendarState.IN_MONTH == getCalendarState())
|| (CalendarState.TODAY == getCalendarState());
}
}