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Diffstat (limited to 'examples/widgets/calculator/calculator.h')
-rw-r--r-- | examples/widgets/calculator/calculator.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/examples/widgets/calculator/calculator.h b/examples/widgets/calculator/calculator.h new file mode 100644 index 0000000000..e1221f4f70 --- /dev/null +++ b/examples/widgets/calculator/calculator.h @@ -0,0 +1,107 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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 CALCULATOR_H +#define CALCULATOR_H + +#include <QDialog> + +QT_BEGIN_NAMESPACE +class QLineEdit; +QT_END_NAMESPACE +class Button; + +//! [0] +class Calculator : public QDialog +{ + Q_OBJECT + +public: + Calculator(QWidget *parent = 0); + +private slots: + void digitClicked(); + void unaryOperatorClicked(); + void additiveOperatorClicked(); + void multiplicativeOperatorClicked(); + void equalClicked(); + void pointClicked(); + void changeSignClicked(); + void backspaceClicked(); + void clear(); + void clearAll(); + void clearMemory(); + void readMemory(); + void setMemory(); + void addToMemory(); +//! [0] + +//! [1] +private: +//! [1] //! [2] + Button *createButton(const QString &text, const char *member); + void abortOperation(); + bool calculate(double rightOperand, const QString &pendingOperator); +//! [2] + +//! [3] + double sumInMemory; +//! [3] //! [4] + double sumSoFar; +//! [4] //! [5] + double factorSoFar; +//! [5] //! [6] + QString pendingAdditiveOperator; +//! [6] //! [7] + QString pendingMultiplicativeOperator; +//! [7] //! [8] + bool waitingForOperand; +//! [8] + +//! [9] + QLineEdit *display; +//! [9] //! [10] + + enum { NumDigitButtons = 10 }; + Button *digitButtons[NumDigitButtons]; +}; +//! [10] + +#endif |