File indexing completed on 2024-04-21 03:41:48

 /*
     KBruch - exercise to convert mixed numbers in ratios and vice versa
     SPDX-FileCopyrightText: 2011 - Sebastian Stein <seb.kde@hpfsc.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef EXERCISEMIXEDNUMBERS_H
 #define EXERCISEMIXEDNUMBERS_H
 
 #include "ExerciseBase.h"
 #include "ResultWidget.h"
 #include "Task.h"
 #include "TaskWidget.h"
 
 
 class QLineEdit;
 class QFrame;
 class QGridLayout;
 class QPushButton;
 class QWidget;
 
 
 /**
  * exercise to convert mixed numbers in ordinary ratios and vice versa
  * \author Sebastian Stein
  */
 class ExerciseMixedNumbers: public ExerciseBase
 {
     Q_OBJECT
 
 public:
     /** constructor */
     explicit ExerciseMixedNumbers(QWidget* parent = nullptr);
 
     /** destructor */
     ~ExerciseMixedNumbers() override;
 
     /** resets the current state, creates a new task and counts the last task
      * as wrong, if it wasn't solved (in _NEXT_TASK state) yet mainly used
      * after changing the task parameters */
     void forceNewTask() override;
 
 Q_SIGNALS:
     /** signal emitted if task solved correctly */
     void signalExerciseSolvedCorrect();
 
     /** signal emitted if task skipped */
     void signalExerciseSkipped();
 
     /** signal emitted if task solved not correctly */
     void signalExerciseSolvedWrong();
 
 private:
     /** holds current state of this exercise */
     short m_currentState;
 
     /** true if task is a mixed number and user must enter ratio */
     bool m_isMixedTask;
 
     /** task currently to be solved */
     Task m_task;
 
     // components to enter result
     QLineEdit * m_integerEdit;
     QLineEdit * m_numerEdit;
     QFrame * m_editLine;
     QLineEdit * m_denoEdit;
 
     // check and skip buttons
     QPushButton * m_checkButton;
     QPushButton * m_skipButton;
 
     // base grid layout
     QGridLayout * m_baseGrid;
     QWidget * m_checkWidget;
     QWidget * m_tmpTaskWidget;
 
     // layout to show task and input fields
     QGridLayout * m_taskLayout;
     TaskWidget * m_taskWidget;
 
     // layout to show solution
     QGridLayout * m_checkLayout;
     ResultWidget * m_resultWidget;
 
     /** creates a new task */
     void createTask();
 
     /** shows next task; hides previous solution */
     void nextTask();
 
     /** checks result and shows solution */
     void showResult();
 
     /** handle check button click */
     void slotCheckButtonClicked();
 
     /** handle skip button click */
     void slotSkipButtonClicked();
 
     /** focus set to numerator edit if return pressed in integer edit */
     void integerReturnPressed();
 
     /** focus set to denominator edit if return pressed in numerator edit */
     void numerReturnPressed();
 
     /** invokes check button if return pressed in denominator edit */
     void denoReturnPressed();
 
     protected:
     /** sets focus to input fields */
     void showEvent(QShowEvent * event) override;
 };
 
 #endif // EXERCISEMIXEDNUMBERS_H