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    begin                : 2008/10/10
    copyright            : (C) 2008 by Tiago Porangaba
    email                : tiago.porangaba@ltia.fc.unesp.br

 *                                                                         *
 *   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.                                   *
 *                                                                         *


#ifdef DEBUG
#include <kdebug.h>

#include "exercisebase.h"
#include "ratio.h"
//Added by qt3to4:
#include <QLabel>
#include <QVBoxLayout>
#include <QGridLayout>

class RationalWidget;
class ResultWidget;

class KLineEdit;

class QGridLayout;
class QLabel;
class QPushButton;
class QString;
class QVBoxLayout;

/*! Construct the exercise widget to work with percentage
 *  \author Sebastian Stein
 *  \author Tiago Porangaba
 * */
00048 class ExercisePercentage : public ExerciseBase

    /** constructor */
    ExercisePercentage (QWidget * parent = 0);

    /** destructor */

    /** force the creation of a new task */
    void forceNewTask();

public slots:
    void update();

    /** class emits this signal, if the task was solved correctly by the user */
    void signalExerciseSolvedCorrect();

    /** class emits this signal, if the task was skipped by the user */
    void signalExerciseSkipped();

    /** class emits this signal, if the task was solved not correctly by the user
     * */
    void signalExerciseSolvedWrong();

    short m_currentState;

    ratio m_result;

    QString m_numberPercentage;
    QString m_numberPercentageOf;
    QString m_resultPercentage;

    QLabel * m_taskLabel;

    RationalWidget * m_rationalWidget;
    ResultWidget * m_resultWidget;
    QFrame * edit_line;
    KLineEdit * answer_edit;

    QPushButton* m_checkButton;
    QPushButton* m_skipButton;

    QGridLayout* checkLayout;
    QGridLayout* taskLayout;
    QGridLayout* baseGrid;

    QWidget * checkWidget;
    QWidget * taskWidget;

    void createTask();
    void showResult();
    void nextTask();

private slots:
    void slotCheckButtonClicked();
    void slotSkipButtonClicked();
    void answerReturnPressed (const QString &);


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