1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/****************************************************************************
*
* 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){
int i;
QButton *btnButton;
// 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);
// set appearance of buttons
for(i=0; i<10; i++){
btnButton = grpbtnDigits->find(i);
btnButton->setFixedSize(30,30);
}
// 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);
// set appearance of buttons
for(i=1; i<6; i++){
btnButton = grpbtnOperators->find(i);
btnButton->setFixedSize(30,30);
}
btnClear->setFixedSize(30,30);
btnClear->setPalette(QPalette( QColor(255, 99, 71) ) );
btnDot->setFixedSize(30,30);
btnPercent->setFixedSize(30,30);
btnF1->setFixedSize(30,30);
btnAbout->setFixedSize(30,30);
// 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)
if(bIsDec) {
dCurrent = i*dDecCurrent;
dDecCurrent /= 10;
}
else
dCurrent = i;
else if(iLenCurrent > 9)
return;
else if(!bIsDec){
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){
// ensure we won't be able to enter more digits
iLenCurrent = 100;
iPreviousOperator = 0;
dPreviousValue = 0;
}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\n"
"Version 0.5\n\n"
"Any comment or feedback to:\n"
"Eric.Santonacci@talc.fr\n");
}
|
