kbbballsgraphicwidget.cpp

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//
// KBlackBox
//
// A simple game inspired by an emacs module
//
/***************************************************************************
 *   Copyright (c) 2007, Nicolas Roffet                                    *
 *   nicolas-kde@roffet.com                                                *
 *                                                                         *
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 *   This program 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 this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA               *
 ***************************************************************************/


#include "kbbballsgraphicwidget.h"

#include <QGraphicsScene>
#include <QGraphicsView>


#include "kbbgraphicsitem.h"
#include "kbbscalablegraphicwidget.h"
#include "kbbthememanager.h"



//
// Constructor / Destructor
//

KBBBallsGraphicWidget::KBBBallsGraphicWidget(KBBThemeManager* themeManager)
{
    m_themeManager = themeManager;
    m_ballsToPlace = 0;
    
    setAlignment(Qt::AlignHCenter | Qt::AlignBottom);
    
    m_scene = new QGraphicsScene(this);
    setScene(m_scene);
    
    setPlacedBalls(0);
}


KBBBallsGraphicWidget::~KBBBallsGraphicWidget()
{
    // This removes all graphic items on the view
    setPlacedBalls(m_ballsToPlace);
}



//
// Public
//

void KBBBallsGraphicWidget::resizeEvent(QResizeEvent*)
{
    fitInView(m_scene->sceneRect(), Qt::KeepAspectRatio);
}


void KBBBallsGraphicWidget::setBallsToPlace(const int ballsToPlace)
{
    if (m_ballsToPlace != ballsToPlace) {
        // 1. remove all balls
        m_ballsToPlace = 0;
        setPlacedBalls(0);
        
        // 2. set new value
        m_ballsToPlace = ballsToPlace;
        
        // 3. Set the scene size
        m_scene->setSceneRect(0, 0, KBBScalableGraphicWidget::RATIO, m_ballsToPlace*KBBScalableGraphicWidget::RATIO);
        resizeEvent(NULL);
    }
}


void KBBBallsGraphicWidget::setPlacedBalls(const int placedBalls)
{
    int ballsLeftToPlace = m_ballsToPlace - placedBalls;
    
    // remove "wrong" player balls
    while (((ballsLeftToPlace>=0) && (m_wrongPlayerBalls.count()>0)) || ((ballsLeftToPlace<0) && (m_wrongPlayerBalls.count()>-ballsLeftToPlace))) {
        delete m_wrongPlayerBalls.last();
        m_wrongPlayerBalls.removeLast();
    }
    
    // remove player balls
    while (((ballsLeftToPlace>=0) && (ballsLeftToPlace<m_playerBalls.count())) || ((ballsLeftToPlace<0) && (m_playerBalls.count()>0))) {
        delete m_playerBalls.last();
        m_playerBalls.removeLast();
    }

    // add balls
    while (ballsLeftToPlace>m_playerBalls.count()) {
        m_playerBalls.append(new KBBGraphicsItem(KBBScalableGraphicWidget::playerBall, m_scene, m_themeManager));
        m_playerBalls.last()->setPos(0, (m_ballsToPlace-m_playerBalls.count())*KBBScalableGraphicWidget::RATIO);
    }
    
    // add "wrong" ball
    while (-ballsLeftToPlace>m_wrongPlayerBalls.count()) {
        m_wrongPlayerBalls.append(new KBBGraphicsItem(KBBScalableGraphicWidget::wrongPlayerBall, m_scene, m_themeManager));
        m_wrongPlayerBalls.last()->setPos(0, (m_ballsToPlace-m_wrongPlayerBalls.count())*KBBScalableGraphicWidget::RATIO);
    }
    
    m_scene->update();
}