/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Pavel Dolgov
* @version $Revision$
*/
package org.apache.harmony.awt.theme;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.SystemColor;
import org.apache.harmony.awt.state.MenuBarState;
import org.apache.harmony.awt.state.MenuItemState;
/**
* Implementation of MenuBar's default visual style
*/
public class DefaultMenuBar {
static final int vSpacing = 2;
static final int hSpacing = 5;
public static void layoutMenuBar(MenuBarState s, int width) {
Font f = s.getFont();
FontMetrics fm = s.getFontMetrics(f);
int lineHeight = getItemHeight(fm);
int lines = 0;
int lineWidth = 0;
for (int i=0; i<s.getItemCount(); i++) {
MenuItemState is = s.getItem(i);
int itemWidth = getItemWidth(fm, is);
if (itemWidth >= width) {
lines += (lineWidth == 0 ? 1 : 2);
lineWidth = 0;
is.setItemBounds(0, lines * lineHeight, itemWidth, lineHeight);
continue;
}
if (lineWidth + itemWidth > width) {
lines ++;
lineWidth = itemWidth;
is.setItemBounds(0, lines * lineHeight, itemWidth, lineHeight);
continue;
}
is.setItemBounds(lineWidth, lines * lineHeight, itemWidth, lineHeight);
lineWidth += itemWidth;
}
if (lineWidth > 0) {
lines ++;
}
s.setSize(width, lines * lineHeight + 1);
}
public static int getPreferredWidth(MenuBarState s) {
int width = 0;
Font f = s.getFont();
FontMetrics fm = s.getFontMetrics(f);
for (int i=0; i<s.getItemCount(); i++) {
width += getItemWidth(fm, s.getItem(i));
}
return width;
}
public static void drawMenuBar(MenuBarState s, Graphics g) {
int width = s.getWidth(), height = s.getHeight();
g.setColor(SystemColor.control);
g.fillRect(0, 0, width, height);
g.setColor(SystemColor.menu);
g.drawLine(0, height-1, width-1, height-1);
g.setFont(s.getFont());
g.setColor(SystemColor.menuText);
int selected = s.getSelectedItemIndex();
for (int i=0; i<s.getItemCount(); i++) {
MenuItemState is = s.getItem(i);
Rectangle item = is.getItemBounds();
Rectangle text = is.getTextBounds();
if (!is.isEnabled()) {
g.setColor(SystemColor.textInactiveText);
} else if (i == selected) {
g.setColor(SystemColor.textHighlight);
g.fillRect(item.x, item.y, item.width, item.height);
g.setColor(SystemColor.textHighlightText);
} else {
g.setColor(SystemColor.menuText);
}
g.drawString(is.getText(), item.x + text.x, item.y + text.y);
}
}
public static int getItemIndex(MenuBarState s, Point p) {
for (int i=0; i<s.getItemCount(); i++) {
MenuItemState is = s.getItem(i);
Rectangle bounds = is.getItemBounds();
if (bounds.contains(p)) {
return i;
}
}
return -1;
}
public static Point getItemLocation(MenuBarState s, int index) {
if (index < 0 || index >= s.getItemCount()) {
return new Point(-1, -1);
}
MenuItemState is = s.getItem(index);
Rectangle bounds = is.getItemBounds();
Point where = new Point(bounds.x, bounds.y + bounds.height);
Point screenPos = s.getLocationOnScreen();
where.translate(screenPos.x, screenPos.y);
return where;
}
private static int getItemWidth(FontMetrics fm, MenuItemState is) {
Rectangle r = is.getTextBounds();
if (r == null) {
int h = getItemHeight(fm);
is.setTextBounds(hSpacing, h + - vSpacing - fm.getDescent(),
fm.stringWidth(is.getText()) + 2 * hSpacing, h);
r = is.getTextBounds();
}
return r.width;
}
private static int getItemHeight(FontMetrics fm) {
return fm.getHeight() + 2 * vSpacing;
}
}