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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit2bda8f7717adf28da4af0d34fb82f63d2868c31d (patch)
tree8d927b7b47a90c4adb646482a52613f58acd6f8c /kcalc/kcalcdisplay.h
downloadtdeutils-2bda8f7717adf28da4af0d34fb82f63d2868c31d.tar.gz
tdeutils-2bda8f7717adf28da4af0d34fb82f63d2868c31d.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeutils@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/*
+
+ KCalc
+
+ Copyright (C) Bernd Johannes Wuebben
+ wuebben@math.cornell.edu
+ wuebben@kde.org
+
+ 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+ */
+
+
+#ifndef _D_KCALCDISPLAY_H_
+#define _D_KCALCDISPLAY_H_
+
+#include <stdlib.h>
+#include <qlabel.h>
+#include <qtimer.h>
+#include "knumber.h"
+#include "kcalctype.h"
+
+#if defined HAVE_LONG_DOUBLE && defined HAVE_L_FUNCS
+ #define PRINT_FLOAT "%.*Lf"
+ #define PRINT_LONG_BIG "%.*Lg"
+ #define PRINT_LONG "%Lg"
+#else
+ #define PRINT_FLOAT "%.*f"
+ #define PRINT_LONG_BIG "%.*g"
+ #define PRINT_LONG "%g"
+#endif
+
+#ifdef HAVE_LONG_LONG
+ #define PRINT_OCTAL "%llo"
+ #define PRINT_HEX "%llX"
+#else
+ #define PRINT_OCTAL "%lo"
+ #define PRINT_HEX "%lX"
+#endif
+
+#define NUM_STATUS_TEXT 4
+
+/*
+ This class provides a pocket calculator display. The display has
+ implicitely two major modes: One is for editing and one is purely
+ for displaying.
+
+ When one uses "setAmount", the given amount is displayed, and the
+ amount which was possibly typed in before is lost. At the same time
+ this new value can not be modified.
+
+ On the other hand, "addNewChar" adds a new digit to the amount that
+ is being typed in. If "setAmount" was used before, the display is
+ cleared and a new input starts.
+
+ TODO: Check overflows, number of digits and such...
+*/
+
+enum NumBase {
+ NB_BINARY = 2,
+ NB_OCTAL = 8,
+ NB_DECIMAL = 10,
+ NB_HEX = 16
+};
+
+
+class KCalcDisplay : public QLabel
+{
+Q_OBJECT
+
+public:
+ KCalcDisplay(QWidget *parent=0, const char *name=0);
+ ~KCalcDisplay();
+
+protected:
+ void mousePressEvent ( QMouseEvent *);
+ virtual void drawContents(QPainter *p);
+
+public:
+ enum Event {
+ EventReset, // resets display
+ EventClear, // if no _error reset display
+ EventError,
+ EventChangeSign
+ };
+ bool sendEvent(Event const event);
+ void deleteLastDigit(void);
+ KNumber const & getAmount(void) const;
+ void newCharacter(char const new_char);
+ bool setAmount(KNumber const & new_amount);
+ int setBase(NumBase new_base);
+ void setBeep(bool flag);
+ void setGroupDigits(bool flag);
+ void setFixedPrecision(int precision);
+ void setPrecision(int precision);
+ void setText(QString const &string);
+ QString text() const;
+ bool updateDisplay(void);
+ void setStatusText(uint i, const QString& text);
+ virtual QSize sizeHint() const;
+private:
+ bool _beep;
+ bool _groupdigits;
+ int _button;
+ bool _lit;
+ NumBase _num_base;
+
+ int _precision;
+ int _fixed_precision; // "-1" = no fixed_precision
+
+ KNumber _display_amount;
+private:
+ bool changeSign(void);
+ void invertColors(void);
+
+ // only used for input of new numbers
+ bool _eestate;
+ bool _period;
+ bool _neg_sign;
+ QString _str_int;
+ QString _str_int_exp;
+ QString _str_status[NUM_STATUS_TEXT];
+
+ QTimer* selection_timer;
+
+signals:
+ void clicked(void);
+ void changedText(QString const &);
+
+public slots:
+ void slotCut(void);
+ void slotCopy(void);
+ void slotPaste(bool bClipboard=true);
+
+private slots:
+ void slotSelectionTimedOut(void);
+ void slotDisplaySelected(void);
+};
+
+#endif // _KCALCDISPLAY_H_