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/***************************************************************************
exercisecompare.h
-------------------
begin : 2004/06/03
copyright : (C) 2004 by Sebastian Stein
email : seb.kde@hpfsc.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifndef EXERCISECOMPARE_H
#define EXERCISECOMPARE_H
#define DEBUG
#ifdef DEBUG
#include <kdebug.h>
#endif
#include "exercisebase.h"
#include "ratio.h"
#include "ratiowidget.h"
class QGridLayout;
class QLabel;
class QPushButton;
class QVBoxLayout;
#include <qwidget.h>
/*! Constructs a QWidget, which shows the task to the user.
* The class also provides input fields, so that the user can enter the result.
* It also controls the interaction, so that the entered result gets checked
* and a new task can be generated.
* \author Sebastian Stein
* */
class ExerciseCompare : public ExerciseBase
{
Q_OBJECT
public:
/** constructor */
ExerciseCompare(QWidget * parent = 0, const char * name = 0);
/** destructor */
~ExerciseCompare();
/** force the creation of a new task */
void forceNewTask();
public slots:
void update();
signals:
/** class emits this signal, if the task was solved correctly by the user */
void signalExerciseSolvedCorrect();
/** class emits this signal, if the task was solved not correctly by the user
* */
void signalExerciseSolvedWrong();
private:
short m_currentState;
RatioWidget* m_firstRatioWidget;
RatioWidget* m_secondRatioWidget;
QPushButton* m_checkButton;
QPushButton* m_signButton;
QLabel* result_label;
QGridLayout* baseGrid;
QWidget* baseWidget;
QVBoxLayout* realLayout;
ratio m_firstRatio;
ratio m_secondRatio;
enum SignButtonState
{
lessThen,
greaterThen
};
SignButtonState m_signButtonState;
void createTask();
void showResult();
void nextTask();
private slots:
void slotCheckButtonClicked();
void slotSignButtonClicked();
};
#endif
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