| /* |
| * 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()); |
| g.drawString(label, textX - 1, textY - 1); |
| } |
| } |
| |
| @Override |
| public void setText(String label) { |
| if (label == null) { |
| label = ""; |
| } |
| if (!label.equals(this.label)) { |
| this.label = label; |
| repaint(); |
| } |
| } |
| |
| @Override |
| public void setAlignment(final int alignment) { |
| if (this.alignment != alignment) { |
| this.alignment = alignment; |
| repaint(); |
| } |
| } |
| } |