GUIMultiLineLabel.java

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/*
 * This file is part of JXClient, the Fullscreen Java Crossfire Client.
 *
 * JXClient is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * JXClient 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JXClient; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Copyright (C) 2005-2008 Yann Chachkoff
 * Copyright (C) 2006-2017,2019-2023 Andreas Kirschbaum
 * Copyright (C) 2010-2012,2014-2018,2020-2023 Nicolas Weeger
 */
 
package com.realtime.crossfire.jxclient.gui.label;
 
import com.realtime.crossfire.jxclient.gui.gui.GUIElementListener;
import com.realtime.crossfire.jxclient.gui.gui.GuiUtils;
import com.realtime.crossfire.jxclient.gui.gui.TooltipManager;
import com.realtime.crossfire.jxclient.gui.gui.TooltipText;
import com.realtime.crossfire.jxclient.skin.skin.GuiFactory;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.regex.Pattern;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class GUIMultiLineLabel extends GUILabel {
 
    private static final long serialVersionUID = 1;
 
    @NotNull
    private static final Pattern LINE_SEPARATOR_PATTERN = Pattern.compile(" *\n");
 
    @NotNull
    private String @NotNull [] lines;
 
    public GUIMultiLineLabel(@NotNull final TooltipManager tooltipManager, @NotNull final GUIElementListener elementListener, @NotNull final String name, @Nullable final BufferedImage picture, @NotNull final Font textFont, @NotNull final Color textColor, @Nullable final Color backgroundColor, @NotNull final Alignment alignment, @NotNull final String text, @NotNull final GuiFactory guiFactory) {
        super(tooltipManager, elementListener, name, picture, text, textFont, textColor, textColor, backgroundColor, alignment, guiFactory);
        lines = LINE_SEPARATOR_PATTERN.split(getText(), -1);
    }
 
    @Override
    protected void textChanged() {
        lines = LINE_SEPARATOR_PATTERN.split(getText(), -1);
        super.textChanged();
    }
 
    @Override
    public void paintComponent(@NotNull final Graphics g) {
        super.paintComponent(g);
 
        if (lines.length <= 0) {
            return;
        }
 
        final Graphics2D g2 = (Graphics2D)g;
        final Dimension rectangle = GuiUtils.getTextDimension("Xg", getFontMetrics(getTextFont()));
        final int lineHeight = rectangle.height;
 
        int y = 0;
        for (String line : lines) {
            drawLine(g2, y, lineHeight, line);
            y += lineHeight;
        }
    }
 
    @Nullable
    @Override
    @SuppressWarnings("MethodDoesntCallSuperMethod")
    public Dimension getPreferredSize() {
        return getTextSize();
    }
 
    @Nullable
    @Override
    @SuppressWarnings("MethodDoesntCallSuperMethod")
    public Dimension getMinimumSize() {
        return getTextSize();
    }
 
    @NotNull
    private Dimension getTextSize() {
        final FontMetrics fontMetrics = getFontMetrics(getTextFont());
 
        int width = 0;
        for (String line : lines) {
            final Dimension dimension = GuiUtils.getTextDimension(line, fontMetrics);
            if (width < dimension.width) {
                width = dimension.width;
            }
        }
 
        final Dimension rectangle = GuiUtils.getTextDimension("Xg", fontMetrics);
        final int height = lines.length*rectangle.height;
 
        return new Dimension(width, height);
    }
 
    @Override
    public void notifyOpen() {
    }
 
    @Nullable
    @Override
    public TooltipText getTooltip() {
        return null;
    }
 
}