messagebox.cpp from FreePop at Krugle

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/***************************************************************************
                          messagebox.cpp  -  description
                             -------------------
    begin                : Fri Sep 27 2002
    copyright            : (C) 2002 by Brendon Higgins
    email                : freepop-devel@lists.sourceforge.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 ***************************************************************************/

#include <messagebox.h>
#include <client.h>

MessageBox::MessageBox(const CL_Rect& pos, CL_Component* parent,
    const CL_Font& f, unsigned int d, unsigned int t):
    CL_Component(pos, parent),
    isMoving(false),
    startedMoving(0),
    duration(d),
    removeTime(t),
    font(f),
    slotDraw(sig_paint().connect(this, &MessageBox::onPaint)) {
}

void MessageBox::addLine(const std::string& s) {
    lines.push_back(std::make_pair(s, app.getTempo().getStamp()));
}

// void MessageBox::addPermLine(const char* s) {
//     SetTextChar(s, lines + permLines);
//     permLines++;
// }

// void MessageBox::changePermLine(const char* s, const int n) {
//     SetTextChar(s, lines + n);
// }

void MessageBox::removeTopLine() {
    lines.pop_front();
    yPos = 0;
    isMoving = false;
}

void MessageBox::step() {
    if (lines.size() > 0 &&
        (app.getTempo().getStamp() - lines.front().second) > duration) {
        if (isMoving) {
            if (app.getTempo().getStamp() - startedMoving > removeTime) {
                removeTopLine();
            } else {
                yPos = -int((app.getTempo().getStamp() - startedMoving) *
                        font.get_height() / removeTime);
            }
        } else {
            startedMoving = app.getTempo().getStamp();
            isMoving = true;
        }
    }
}

void MessageBox::onPaint() {
    step();
    int y = yPos;
    for (ListType::iterator i = lines.begin(); i != lines.end(); ++i) {
        font.draw(0, y, i->first);
        y += font.get_height();
    }
}
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