kbruch/src/taskview.h

   1 /***************************************************************************
   2                           taskview.cpp  -  Header File
   3                              -------------------
   4     begin                : Tue Feb 08 13:42:00 CET 2002
   5     copyright            : (C) 2001 - 2004 by Sebastian Stein
   6     email                : seb.kde@hpfsc.de
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #ifndef TASKVIEW_H
  19 #define TASKVIEW_H
  20
  21 #define _CHECK_TASK     0
  22 #define _NEXT_TASK      1
  23
  24 #include "exercisebase.h"
  25 #include "resultwidget.h"
  26 #include "task.h"
  27 #include "taskwidget.h"
  28
  29 #ifdef DEBUG
  30 #include <kdebug.h>
  31 #endif
  32
  33 #include <qwidget.h>
  34
  35
  36 class QVBoxLayout;
  37 class QHBoxLayout;
  38 class QGridLayout;
  39 class QSpacerItem;
  40 class QLabel;
  41 class QPushButton;
  42 class QLineEdit;
  43 class QFrame;
  44
  45 /*! Constructs a QWidget, which shows the task to the user.
  46  *  The class also provides input fields, so that the user can enter the result.
  47  *  It also controls the interaction, so that the entered result gets checked
  48  *  and a new task can be generated.
  49  *  \author Sebastian Stein
  50  * */
  51 class TaskView : public ExerciseBase
  52 {
  53         Q_OBJECT
  54
  55 public:
  56         /** constructor */
  57         TaskView(QWidget * parent = 0, const char * name = 0,
  58                  bool padd_sub = true, bool pmul_div = false,
  59                  unsigned int pnr_ratios = 2, unsigned int pmax_md = 10);
  60
  61         /** destructor */
  62         ~TaskView();
  63
  64         /** set new task parameters, which will be used for the next task to be
  65          * generated */
  66         void setTaskParameters(bool padd_sub, bool pmul_div, unsigned int pnr_ratios, unsigned int pmax_md);
  67
  68         /** force the creation of a new task */
  69         void forceNewTask();
  70
  71 public slots:
  72         void update();
  73
  74 signals:
  75         /** class emits this signal, if the task was solved correctly by the user */
  76         void signalTaskSolvedCorrect();
  77
  78         /** class emits this signal, if the task was solved not correctly by the user
  79          * */
  80         void signalTaskSolvedWrong();
  81
  82 private:
  83         bool add_sub;
  84         bool mul_div;
  85         unsigned int nr_ratios;
  86         unsigned int curr_nr_ratios;
  87         unsigned int max_md;
  88         short m_currentState;
  89
  90         ResultWidget* m_resultWidget;
  91         QPushButton* m_checkButton;
  92         QLabel* result_label;
  93         TaskWidget* m_taskWidget;
  94         QLineEdit* numer_edit;
  95         QFrame* edit_line;
  96         QLineEdit* deno_edit;
  97
  98         QGridLayout* baseGrid;
  99         QWidget* baseWidget;
 100         QVBoxLayout* realLayout;
 101
 102         task current_task;
 103         ratio result;
 104         ratio entered_result;
 105
 106         void showResult();
 107         void nextTask();
 108
 109 private slots:
 110         void slotCheckButtonClicked();
 111 };
 112
 113 #endif