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+/***************************************************************************
+                              exercisefactorize.h
+                             -------------------
+    begin                : 2004/06/04
+    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 EXERCISEFACTORIZE_H
+#define EXERCISEFACTORIZE_H
+
+#define DEBUG
+
+#ifdef DEBUG
+#include <kdebug.h>
+#endif
+
+#include <qvaluelist.h>
+#include <qvariant.h>
+#include <qwidget.h>
+
+#include "exercisebase.h"
+#include "ratio.h"
+
+class ResultWidget;
+class FactorizedWidget;
+
+class QVBoxLayout;
+class QHBoxLayout;
+class QGridLayout;
+class QSpacerItem;
+class QLabel;
+class QLineEdit;
+class QPushButton;
+
+// a list containing uints
+typedef QValueList<uint> uintList;
+
+// set a macro how much numbers are given to factorize
+#define numberPossibleTasks 45
+
+// set all possible numbers to factorize
+const uint possibleTasks[numberPossibleTasks] = {4, 6, 8, 9, 10, 12, 14, 15, 16,
+18, 20, 21, 22, 24, 25, 26, 27, 30, 32, 33, 34, 35, 38, 39, 49, 50, 51, 54, 55,
+57, 60, 65, 70, 77, 75, 85, 95, 98, 121, 125, 169, 242, 250, 289, 361};
+
+/*! Construct the exercise widget to factorize a given number
+ *
+ *  \author Sebastian Stein
+ * */
+class ExerciseFactorize : public ExerciseBase
+{
+	Q_OBJECT
+
+public:
+	/** constructor */
+	ExerciseFactorize(QWidget * parent = 0, const char * name = 0);
+
+	/** destructor */
+	~ExerciseFactorize();
+
+
+	/** 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;
+
+	uint m_taskNumber;
+	uintList m_factorsEntered;
+	uintList m_factorsResult;
+
+	QLabel* m_taskLabel;
+	QLabel* m_equalSignLabel;
+	QLineEdit* m_factorsEnteredEdit;
+	FactorizedWidget* m_factorsWidget;
+	QLabel* result_label;
+
+	
+
+	// buttons for the different prime factors
+	QPushButton* m_factor2Button;
+	QPushButton* m_factor3Button;
+	QPushButton* m_factor5Button;
+	QPushButton* m_factor7Button;
+	QPushButton* m_factor11Button;
+	QPushButton* m_factor13Button;
+	QPushButton* m_factor17Button;
+	QPushButton* m_factor19Button;
+
+	// button to remove the last entered factor
+	QPushButton* m_removeLastFactorButton;
+	QPushButton* m_checkButton;
+
+
+	//
+	// the following two methods were added to fix
+	// bug #116831 (reverse layout in RTL desktops)
+	// Amit Ramon amit.ramon@kdemail.net
+	//
+
+	/** create the factor widgets layout */
+	QHBoxLayout* createFactorsLayout();
+
+	/** create the (answer) buttons layout */
+	QGridLayout* createButtonsLayout();
+	
+
+	void createTask();
+	void showResult();
+	void nextTask();
+
+	void addFactor(uint factor);
+	void updateEnteredEdit();
+
+protected:
+	QVBoxLayout* Form1Layout;
+	QVBoxLayout* layout9;
+	QSpacerItem* spacer4;
+	QHBoxLayout* layout4;
+	QSpacerItem* spacer1;
+	QSpacerItem* spacer2;
+	QVBoxLayout* layout2;
+	QGridLayout* layout1;
+	QHBoxLayout* layout7;
+	QSpacerItem* spacer3;
+
+private slots:
+	void slotCheckButtonClicked();
+
+	void slotFactor2ButtonClicked();
+	void slotFactor3ButtonClicked();
+	void slotFactor5ButtonClicked();
+	void slotFactor7ButtonClicked();
+	void slotFactor11ButtonClicked();
+	void slotFactor13ButtonClicked();
+	void slotFactor17ButtonClicked();
+	void slotFactor19ButtonClicked();
+	void slotRemoveLastFactorButtonClicked();
+};
+
+#endif