Line.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.log;
 
import com.realtime.crossfire.jxclient.protocol.MessageType;
import java.awt.Graphics2D;
import java.awt.geom.RectangularShape;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public class Line {
 
    private static final int MIN_LINE_HEIGHT = 8;
 
    @NotNull
    private final List<TextSegment> segments = new ArrayList<>();
 
    private final int type;
 
    private final int subtype;
 
    private int height = -1;
 
    private int position;
 
    private int length;
 
    private boolean showFirstSegment;
 
    public Line(final int type, final int subtype, @NotNull final TextSegment segment) {
        this.type = type;
        this.subtype = subtype;
        segments.add(segment);
        length = segment.getText().length();
    }
 
    public void addTextSegment(@NotNull final TextSegment segment) {
        segments.add(segment);
        length += segment.getText().length();
    }
 
    @NotNull
    public Iterable<TextSegment> segments() {
        final List<TextSegment> tmp = Collections.unmodifiableList(segments);
        return showFirstSegment ? tmp : tmp.subList(1, tmp.size());
    }
 
    @Nullable
    public TextSegment getLastTextSegment() {
        return segments.size() > 1 ? segments.get(segments.size()-1) : null;
    }
 
    public void removeLastTextSegment() {
        if (segments.size() <= 1) {
            throw new IllegalStateException("line is empty");
        }
        final TextSegment segment = segments.remove(segments.size()-1);
        length -= segment.getText().length();
    }
 
    public int getHeight() {
        return height;
    }
 
    public int getStartPosition() {
        return position;
    }
 
    public int getEndPosition() {
        return position+length;
    }
 
    public int calculateHeight(final int linePosition, final int renderWidth, final boolean showSentCommands, final boolean showFirstSegment) {
        position = linePosition;
        this.showFirstSegment = showFirstSegment;
 
        if (!isVisible(showSentCommands)) {
            int position = linePosition;
            for (final TextSegment segment : segments) {
                segment.setExtends(0, 0, position);
                position += segment.getText().length();
            }
            height = 0;
            return height;
        }
 
        int height = 0;
        int x = 0;
        int minY = 0;
        int maxY = 0;
        int position = linePosition;
        for (int i = 0; i < segments.size(); i++) {
            final TextSegment segment = segments.get(i);
            final RectangularShape rectangle = segment.getSize();
            final int width = showFirstSegment || i > 0 ? (int)Math.round(rectangle.getWidth()) : 0;
            if (x != 0 && x+width > renderWidth) {
                height += maxY-minY;
                x = 0;
                minY = 0;
                maxY = 0;
            }
 
            segment.setExtends(x, height, position);
 
            x += width;
            minY = (int)Math.min(minY, Math.round(rectangle.getY()));
            maxY = (int)Math.max(maxY, Math.round(rectangle.getY()+rectangle.getHeight()));
            position += segment.getText().length();
        }
 
        height += maxY-minY;
 
        this.height = Math.max(MIN_LINE_HEIGHT, height);
        return this.height;
    }
 
    public boolean isVisible(final boolean showSentCommands) {
        return showSentCommands || type != MessageType.MSG_TYPE_JXCLIENT || subtype != MessageType.MSG_SUBTYPE_JXCLIENT_COMMAND;
    }
 
    public void updatePosition(final int positions) {
        if (positions < 0 && position+positions < 0) {
            throw new IllegalArgumentException("cannot shift line position "+position+" by "+positions);
        }
        position += positions;
        for (final TextSegment segment : segments) {
            segment.updatePosition(positions);
        }
    }
 
    public void drawLine(@NotNull final Graphics2D g, final int y, final int beginSelection, final int endSelection) {
        for (TextSegment segment : segments()) {
            segment.draw(g, y, beginSelection, endSelection);
        }
    }
 
    public void appendSelection(@NotNull final StringBuilder sb, final int beginSelection, final int endSelection) {
        for (TextSegment segment : segments()) {
            segment.appendSelection(sb, beginSelection, endSelection);
        }
    }
 
}