/*
* Copyright (c) 2002, 2013, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.awt.X11;
import java.awt.*;
import java.awt.peer.*;
class XLabelPeer extends XComponentPeer implements LabelPeer {
/**
* Create the label
*/
static final int TEXT_XPAD = 8;
static final int TEXT_YPAD = 6;
String label;
int alignment;
FontMetrics cachedFontMetrics;
Font oldfont;
FontMetrics getFontMetrics()
{
if (cachedFontMetrics != null)
return cachedFontMetrics;
else return getFontMetrics(getPeerFont());
}
void preInit(XCreateWindowParams params) {
super.preInit(params);
Label target = (Label) this.target;
label = target.getText();
if (label == null) {
label = "";
}
alignment = target.getAlignment();
}
XLabelPeer(Label target) {
super(target);
}
/**
* Minimum size.
*/
public Dimension getMinimumSize() {
FontMetrics fm = getFontMetrics();
int w;
try {
w = fm.stringWidth(label);
}
catch (NullPointerException e) {
w = 0;
}
return new Dimension(w + TEXT_XPAD,
fm.getAscent() + fm.getMaxDescent() + TEXT_YPAD);
}
/**
* Paint the label
*/
// NOTE: This method is called by privileged threads.
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
@Override
void paintPeer(final Graphics g) {
int textX = 0;
int textY = 0;
g.setColor(getPeerBackground());
g.fillRect(0, 0, width, height);
Font f = getPeerFont();
g.setFont(f);
FontMetrics fm = g.getFontMetrics();
if (cachedFontMetrics == null)
{
cachedFontMetrics = fm;
}
else
{
if (oldfont != f)
cachedFontMetrics = fm;
}
switch (alignment) {
case Label.LEFT:
textX = 2;
textY = (height + fm.getMaxAscent() - fm.getMaxDescent()) / 2;
break;
case Label.RIGHT:
textX = width - (fm.stringWidth(label) + 2);
textY = (height + fm.getMaxAscent() - fm.getMaxDescent()) / 2;
break;
case Label.CENTER:
textX = (width - fm.stringWidth(label)) / 2;
textY = (height + fm.getMaxAscent() - fm.getMaxDescent()) / 2;
break;
}
if (isEnabled()) {
g.setColor(getPeerForeground());
g.drawString(label, textX, textY);
}
else {
g.setColor(getPeerBackground().brighter());
g.drawString(label, textX, textY);
g.setColor(getPeerBackground().darker());
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