Added kmymoney

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kmymoney@1239792 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 249 insertions, 0 deletions

diff --git a/kmymoney2/widgets/kmymoneycalculator.h b/kmymoney2/widgets/kmymoneycalculator.h
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+++ b/kmymoney2/widgets/kmymoneycalculator.h
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+/***************************************************************************
+                          kmymoneycalculator.h  -  description
+                             -------------------
+    begin                : Sat Oct 19 2002
+    copyright            : (C) 2000-2002 by Michael Edwardes
+    email                : mte@users.sourceforge.net
+                           Javier Campos Morales <javi_c@users.sourceforge.net>
+                           Felix Rodriguez <frodriguez@users.sourceforge.net>
+                           John C <thetacoturtle@users.sourceforge.net>
+                           Thomas Baumgart <ipwizard@users.sourceforge.net>
+                           Kevin Tambascio <ktambascio@users.sourceforge.net>
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   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 KMYMONEYCALCULATOR_H
+#define KMYMONEYCALCULATOR_H
+
+// ----------------------------------------------------------------------------
+// QT Includes
+
+#include <qwidget.h>
+#include <qframe.h>
+#include <qlayout.h>
+#include <qgrid.h>
+#include <qlcdnumber.h>
+#include <qlineedit.h>
+#include <qlabel.h>
+
+// ----------------------------------------------------------------------------
+// KDE Includes
+
+#include <kpushbutton.h>
+
+// ----------------------------------------------------------------------------
+// Project Includes
+
+/**
+  *@author Thomas Baumgart
+  */
+
+/**
+  * This class implements a simple electronic calculator with the
+  * ability of addition, subtraction, multiplication and division
+  * and percentage calculation. Memory locations are not available.
+  *
+  * The first operand and operation can be loaded from an external
+  * source to switch from an edit-widget to the calculator widget
+  * without having the user to re-type the data. See setInitialValues()
+  * for details.
+  */
+class kMyMoneyCalculator : public QFrame  {
+   Q_OBJECT
+public:
+  kMyMoneyCalculator(QWidget* parent = 0, const char *name = 0);
+  ~kMyMoneyCalculator();
+
+  /**
+    * This methods is used to extract the result of the last
+    * calculation. The fractional part is separated from the
+    * integral part by the character setup using setComma().
+    *
+    * @return QString representing the result of the
+    *         last operation
+    */
+  const QString result(void) const;
+
+  /**
+    * This method is used to set the character to be used
+    * as the separator between the integer and fractional part
+    * of an operand. Upon creation of the object, m_comma is
+    * set to the current locale setting of KDE's decimalSymbol.
+    *
+    * @param ch QChar representing the character to be used
+    */
+  void setComma(const QChar ch) { m_comma = ch; };
+
+  /**
+    * This method is used to preset the first operand and start
+    * execution of an operation. This method is currently used
+    * by kMyMoneyEdit. If @p ev is 0, then no operation will be
+    * started.
+    *
+    * @param value reference to QString representing the operands value
+    * @param ev    pointer to QKeyEvent representing the operation's key
+    */
+  void setInitialValues(const QString& value, QKeyEvent* ev);
+
+signals:
+  /**
+    * This signal is emitted, when a new result is available
+    */
+  void signalResultAvailable();
+
+protected:
+  void keyPressEvent(QKeyEvent* ev);
+
+  /**
+    * This method is used to transform a double into a QString
+    * and removing any trailing 0's and decimal seperators
+    *
+    * @param val reference to double value to be converted
+    * @return QString object containing the converted value
+    */
+  QString normalizeString(const double& val);
+
+protected slots:
+  /**
+    * This method appends the digit represented by the parameter
+    * to the current operand
+    *
+    * @param button integer value of the digit to be added in the
+    *               range [0..9]
+    */
+  void digitClicked(int button);
+
+  /**
+    * This methods starts the operation contained in the parameter
+    *
+    * @param button The Qt::Keycode for the button pressed or clicked
+    */
+  void calculationClicked(int button);
+
+  /**
+    * This method appends a period (comma) to initialize the fractional
+    * part of an operand. The period is only appended once.
+    */
+  void commaClicked(void);
+
+  /**
+    * This method reverses the sign of the current operand
+    */
+  void plusminusClicked(void);
+
+  /**
+    * This method clears the current operand
+    */
+  void clearClicked(void);
+
+  /**
+    * This method clears all registers
+    */
+  void clearAllClicked(void);
+
+  /**
+    * This method executes the percent operation
+    */
+  void percentClicked(void);
+
+  /**
+    * This method updates the display of the calculator with
+    * the text passed as argument
+    *
+    * @param str reference to QString containing the new display contents
+    */
+  void changeDisplay(const QString& str);
+
+private:
+  /**
+    * This member variable stores the current (second) operand
+    */
+  QString operand;
+
+  /**
+    * This member variable stores the last result
+    */
+  QString m_result;
+
+  /**
+    * This member variable stores the representation of the
+    * character to be used to separate the integer and fractional
+    * part of numbers. The internal representation is always a period.
+    */
+  QChar m_comma;
+
+  /**
+    * The numeric representation of a stacked first operand
+    */
+  double op0;
+
+  /**
+    * The numeric representation of the first operand
+    */
+  double op1;
+
+  /**
+    * This member stores the operation to be performed between
+    * the first and the second operand.
+    */
+  int op;
+
+  /**
+   * This member stores a pending addition operation
+   */
+  int stackedOp;
+
+  /**
+    * This member stores a pointer to the display area
+    */
+  QLabel *display;
+
+  /**
+    * This member array stores the pointers to the various
+    * buttons of the calculator. It is setup during the
+    * constructor of this object
+    */
+  KPushButton *buttons[20];
+
+  /**
+    * This enumeration type stores the values used for the
+    * various keys internally
+    */
+  enum {
+    /* 0-9 are used by digits */
+    COMMA = 10,
+    /*
+     * make sure, that PLUS through EQUAL remain in
+     * the order they are. Otherwise, check the calculation
+     * signal mapper
+     */
+    PLUS,
+    MINUS,
+    SLASH,
+    STAR,
+    EQUAL,
+    PLUSMINUS,
+    PERCENT,
+    CLEAR,
+    CLEARALL,
+    /* insert new buttons before this line */
+    MAX_BUTTONS
+  };
+
+  /**
+    * This flag signals, if the operand should be replaced upon
+    * a digit key pressure. Defaults to false and will be set, if
+    * setInitialValues() is called without an operation.
+    */
+  bool m_clearOperandOnDigit;
+};
+
+#endif