spreadsheet.h Example File

  /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the demonstration applications of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** "Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/

  #ifndef SPREADSHEET_H
  #define SPREADSHEET_H

  #include <QMainWindow>

  class QAction;
  class QLabel;
  class QLineEdit;
  class QToolBar;
  class QTableWidgetItem;
  class QTableWidget;

  class SpreadSheet : public QMainWindow
  {
      Q_OBJECT

  public:

      SpreadSheet(int rows, int cols, QWidget *parent = 0);

  public slots:
      void updateStatus(QTableWidgetItem *item);
      void updateColor(QTableWidgetItem *item);
      void updateLineEdit(QTableWidgetItem *item);
      void returnPressed();
      void selectColor();
      void selectFont();
      void clear();
      void showAbout();

      void print();

      void actionSum();
      void actionSubtract();
      void actionAdd();
      void actionMultiply();
      void actionDivide();

  protected:
      void setupContextMenu();
      void setupContents();

      void setupMenuBar();
      void createActions();

      void actionMath_helper(const QString &title, const QString &op);
      bool runInputDialog(const QString &title,
                          const QString &c1Text,
                          const QString &c2Text,
                          const QString &opText,
                          const QString &outText,
                          QString *cell1, QString *cell2, QString *outCell);
  private:
      QToolBar *toolBar;
      QAction *colorAction;
      QAction *fontAction;
      QAction *firstSeparator;
      QAction *cell_sumAction;
      QAction *cell_addAction;
      QAction *cell_subAction;
      QAction *cell_mulAction;
      QAction *cell_divAction;
      QAction *secondSeparator;
      QAction *clearAction;
      QAction *aboutSpreadSheet;
      QAction *exitAction;

      QAction *printAction;

      QLabel *cellLabel;
      QTableWidget *table;
      QLineEdit *formulaInput;

  };

  void decode_pos(const QString &pos, int *row, int *col);
  QString encode_pos(int row, int col);

  #endif // SPREADSHEET_H