Diffstat (limited to 'noncore/tools/euroconv/calckeypad.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/tools/euroconv/calckeypad.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/noncore/tools/euroconv/calckeypad.cpp b/noncore/tools/euroconv/calckeypad.cpp new file mode 100644 index 0000000..4156570 --- a/dev/null +++ b/noncore/tools/euroconv/calckeypad.cpp @@ -0,0 +1,191 @@ +/**************************************************************************** + * + * File: calckeypad.cpp + * + * Description: + * + * + * Authors: Eric Santonacci <Eric.Santonacci@talc.fr> + * + * Requirements: Qt + * + * $Id$ + * + ***************************************************************************/ + +#include <qmessagebox.h> + +#include "calckeypad.h" + + +KeyPad::KeyPad(LCDDisplay *lcd, QWidget *parent, const char *name ) + : QGrid(5, parent, name){ + + +// save lcd at init +display = lcd; +// Init variable +dCurrent = 0; +iLenCurrent = 1; +bIsDec = false; +dDecCurrent = 0; +iPreviousOperator = 0; +dPreviousValue = 0; + +// First line +btnClear = new QPushButton("CE/C", this, "Clear"); +btn7 = new QPushButton("7", this, "7"); +btn8 = new QPushButton("8", this, "8"); +btn9 = new QPushButton("9", this, "9"); +btnPlus = new QPushButton("+", this, "+"); +// 2nd line +btnPercent = new QPushButton("%", this, "percent"); +btn4 = new QPushButton("4", this, "4"); +btn5 = new QPushButton("5", this, "5"); +btn6 = new QPushButton("6", this, "6"); +btnMinus = new QPushButton("-", this, "-"); +// 3rd line +btnF1 = new QPushButton("",this, "F1"); +btn1 = new QPushButton("1", this, "1"); +btn2 = new QPushButton("2", this, "2"); +btn3 = new QPushButton("3", this, "3"); +btnMultiply = new QPushButton("X", this, "X"); +// 4th line +btnAbout = new QPushButton("?", this, "About"); +btn0 = new QPushButton("0", this, "0"); +btnDot = new QPushButton(".", this, "dot"); +btnEqual = new QPushButton("=", this, "equal"); +btnDivide = new QPushButton("/", this, "divide"); + +// Digit key +grpbtnDigits = new QButtonGroup(0, "digits"); +grpbtnDigits->insert(btn0, 0); +grpbtnDigits->insert(btn1, 1); +grpbtnDigits->insert(btn2, 2); +grpbtnDigits->insert(btn3, 3); +grpbtnDigits->insert(btn4, 4); +grpbtnDigits->insert(btn5, 5); +grpbtnDigits->insert(btn6, 6); +grpbtnDigits->insert(btn7, 7); +grpbtnDigits->insert(btn8, 8); +grpbtnDigits->insert(btn9, 9); + +// Operator key +grpbtnOperators = new QButtonGroup(0, "operator"); +grpbtnOperators->insert(btnPlus, 1); +grpbtnOperators->insert(btnMinus,2); +grpbtnOperators->insert(btnMultiply,3); +grpbtnOperators->insert(btnDivide,4); +grpbtnOperators->insert(btnEqual,5); + + +// SIGNALS AND SLOTS +connect(grpbtnDigits, SIGNAL(clicked(int) ), this, SLOT(enterDigits(int))); +connect(grpbtnOperators, SIGNAL(clicked(int)), this, SLOT(operatorPressed(int))); +connect(btnClear, SIGNAL(clicked()), this, SLOT(clearLCD())); +connect(btnAbout, SIGNAL(clicked()), this, SLOT(aboutDialog())); +connect(btnDot, SIGNAL(clicked()), this, SLOT(gotoDec())); +} + + +/*********************************************************************** + * SLOT: enterDigits calculates the value to display and display it. + **********************************************************************/ +void KeyPad::enterDigits(int i){ + +if(!dCurrent) + dCurrent = i; +else if(!bIsDec){ + if(iLenCurrent > 9) + return; + dCurrent *= 10; + dCurrent += i; + iLenCurrent++; +}else{ + dCurrent += i*dDecCurrent; + dDecCurrent /= 10; +} + +display->setValue(dCurrent); +} + +/*********************************************************************** + * SLOT: Operator has been pressed + **********************************************************************/ +void KeyPad::operatorPressed(int i){ + +if(iPreviousOperator){ + switch(iPreviousOperator){ + case 1: // Plus + + dCurrent += dPreviousValue; + break; + + case 2: // Minus - + dCurrent = dPreviousValue - dCurrent; + break; + + case 3: // Multiply * + dCurrent *= dPreviousValue; + break; + + case 4: // Divide / + dCurrent = dPreviousValue / dCurrent; + break; + + } + display->setValue(dCurrent); +} +if(i == 5){ + // key '=' pressed + dPreviousValue = 0; + iPreviousOperator = 0; + // We don't want to add digits + iLenCurrent = 100; +}else{ + dPreviousValue = dCurrent; + iPreviousOperator = i; + // reset LCD for next digit + dCurrent = 0; + iLenCurrent = 1; + bIsDec = false; + dDecCurrent = 0; +} + +} +/*********************************************************************** + * SLOT: clearLCD CE/C has been pressed + **********************************************************************/ +void KeyPad::clearLCD(void){ + +dCurrent = 0; +iLenCurrent = 1; +bIsDec = false; +dDecCurrent = 0; +iPreviousOperator = 0; +dPreviousValue = 0; +display->setValue(0); +} + +/*********************************************************************** + * SLOT: gotoDec Dot has been pressed + **********************************************************************/ +void KeyPad::gotoDec(void){ + +bIsDec = true; +dDecCurrent = 0.1; +} + + + +/*********************************************************************** + * SLOT: Display About Dialog... + **********************************************************************/ +void KeyPad::aboutDialog(void){ + +QMessageBox::about( this, "About Euroconv", + "Euroconv is an Euro converter\n\n" + "Copyright 2003 TALC Informatique.\n" + "Under GPL license\n\n" + "Written by Eric Santonacci for Opie\n" + "http://opie.handhelds.org\n" ); +} |