settingssheet.h

   1 //
   2 // C++ Interface: settingssheet
   3 //
   4 // Description:
   5 //
   6 //
   7 // Author: Mike Taverne <mtaverne@engits.com>, (C) 2009
   8 //
   9 // Copyright: See COPYING file that comes with this distribution
  10 //
  11 //
  12 #ifndef SETTINGSSHEET_H
  13 #define SETTINGSSHEET_H
  14
  15 #include <QTableWidget>
  16 #include <QTableWidgetItem>
  17
  18 class Cell : public QTableWidgetItem
  19 {
  20 public:
  21   Cell();
  22
  23   QTableWidgetItem *clone() const;
  24   void setData(int role, const QVariant &value);
  25   QVariant data(int role) const;
  26   void setFormula(const QString &formula);
  27   QString formula() const;
  28   void setDirty();
  29
  30 private:
  31   QVariant value() const;
  32   QVariant evalExpression(const QString &str, int &pos) const;
  33   QVariant evalTerm(const QString &str, int &pos) const;
  34   QVariant evalFactor(const QString &str, int &pos) const;
  35
  36   mutable QVariant cachedValue;
  37   mutable bool cacheIsDirty;
  38 };
  39
  40 class SettingsSheet : public QTableWidget
  41 {
  42 Q_OBJECT
  43 public:
  44     SettingsSheet(QWidget *parent = 0);
  45
  46     ~SettingsSheet();
  47
  48   bool readFile(const QString &fileName,int verbose=1);
  49   bool writeFile(const QString &fileName);
  50   void setFormula(int row, int column, const QString &formula);
  51   QString formula(int row, int column) const;
  52   Cell* cell(int row, int column) const;
  53
  54 private:
  55   enum { MagicNumber = 0x7F51C883 };
  56
  57 };
  58
  59 #endif