/*
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package javax.swing.plaf.basic;
import sun.awt.AppContext;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.text.View;
/**
* BasicToggleButton implementation
*
* @author Jeff Dinkins
*/
public class BasicToggleButtonUI extends BasicButtonUI {
private static final Object BASIC_TOGGLE_BUTTON_UI_KEY = new Object();
private static final String propertyPrefix = "ToggleButton" + ".";
// ********************************
// Create PLAF
// ********************************
/**
* Returns an instance of {@code BasicToggleButtonUI}.
*
* @param b a component
* @return an instance of {@code BasicToggleButtonUI}
*/
public static ComponentUI createUI(JComponent b) {
AppContext appContext = AppContext.getAppContext();
BasicToggleButtonUI toggleButtonUI =
(BasicToggleButtonUI) appContext.get(BASIC_TOGGLE_BUTTON_UI_KEY);
if (toggleButtonUI == null) {
toggleButtonUI = new BasicToggleButtonUI();
appContext.put(BASIC_TOGGLE_BUTTON_UI_KEY, toggleButtonUI);
}
return toggleButtonUI;
}
protected String getPropertyPrefix() {
return propertyPrefix;
}
// ********************************
// Paint Methods
// ********************************
public void paint(Graphics g, JComponent c) {
AbstractButton b = (AbstractButton) c;
ButtonModel model = b.getModel();
Dimension size = b.getSize();
FontMetrics fm = g.getFontMetrics();
Insets i = c.getInsets();
Rectangle viewRect = new Rectangle(size);
viewRect.x += i.left;
viewRect.y += i.top;
viewRect.width -= (i.right + viewRect.x);
viewRect.height -= (i.bottom + viewRect.y);
Rectangle iconRect = new Rectangle();
Rectangle textRect = new Rectangle();
Font f = c.getFont();
g.setFont(f);
// layout the text and icon
String text = SwingUtilities.layoutCompoundLabel(
c, fm, b.getText(), b.getIcon(),
b.getVerticalAlignment(), b.getHorizontalAlignment(),
b.getVerticalTextPosition(), b.getHorizontalTextPosition(),
viewRect, iconRect, textRect,
b.getText() == null ? 0 : b.getIconTextGap());
g.setColor(b.getBackground());
if (model.isArmed() && model.isPressed() || model.isSelected()) {
paintButtonPressed(g,b);
}
// Paint the Icon
if(b.getIcon() != null) {
paintIcon(g, b, iconRect);
}
// Draw the Text
if (text != null && !text.isEmpty()) {
View v = (View) c.getClientProperty(BasicHTML.propertyKey);
if (v != null) {
v.paint(g, textRect);
} else {
paintText(g, b, textRect, text);
}
}
// draw the dashed focus line.
if (b.isFocusPainted() && b.hasFocus()) {
paintFocus(g, b, viewRect, textRect, iconRect);
}
}
/**
* Paints an icon in the specified location.
*
* @param g an instance of {@code Graphics}
* @param b an instance of {@code Button}
* @param iconRect bounds of an icon
*/
protected void paintIcon(Graphics g, AbstractButton b, Rectangle iconRect) {
ButtonModel model = b.getModel();
Icon icon = null;
if(!model.isEnabled()) {
if(model.isSelected()) {
icon = b.getDisabledSelectedIcon();
} else {
icon = b.getDisabledIcon();
}
} else if(model.isPressed() && model.isArmed()) {
icon = b.getPressedIcon();
if(icon == null) {
// Use selected icon
icon = b.getSelectedIcon();
}
} else if(model.isSelected()) {
if(b.isRolloverEnabled() && model.isRollover()) {
icon = b.getRolloverSelectedIcon();
/**代码未完, 请加载全部代码(NowJava.com).**/