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#include <cstdlib>
#include "calculator.h"
CalculatorWindow::CalculatorWindow( const Rect &rFrame,
const String& szTitle,
unsigned int nWindowLayoutFlags,
unsigned int uiFlags
): ApplicationWindow(rFrame, szTitle, nWindowLayoutFlags)
{
pText = new TextView(this, Rect(15, 30, 160, 50), WINDOW_LAYOUT_FOLLOW_RIGHT , TEXTVIEW_FLAG_SINGLE_LINE);
pText->Enable(false);
pText->Set("0.0");
Button * pButton;
pButton = new Button(this, Rect(Point(15, 60), Point(40, 82)), "7", 0, new MessageCommand(BUTTON_SEVEN));
pButton = new Button(this, Rect(Point(45, 60), Point(70, 82)), "8", 0, new MessageCommand(BUTTON_EIGHT));
pButton = new Button(this, Rect(Point(75, 60), Point(100, 82)), "9", 0, new MessageCommand(BUTTON_NINE));
pButton = new Button(this, Rect(Point(105, 60), Point(160, 82)), "Clear", 0, new MessageCommand(BUTTON_CLEAR));
pButton = new Button(this, Rect(Point(15, 87), Point(40, 109)), "4", 0, new MessageCommand(BUTTON_FOUR));
pButton = new Button(this, Rect(Point(45, 87), Point(70, 109)), "5", 0, new MessageCommand(BUTTON_FIVE));
pButton = new Button(this, Rect(Point(75, 87), Point(100, 109)), "6", 0, new MessageCommand(BUTTON_SIX));
pButton = new Button(this, Rect(Point(105, 87), Point(130, 109)), "+", 0, new MessageCommand(BUTTON_PLUS));
pButton = new Button(this, Rect(Point(135, 87), Point(160, 109)), "-", 0, new MessageCommand(BUTTON_MINUS));
pButton = new Button(this, Rect(Point(15, 114), Point(40, 136)), "1", 0, new MessageCommand(BUTTON_ONE));
pButton = new Button(this, Rect(Point(45, 114), Point(70, 136)), "2", 0, new MessageCommand(BUTTON_TWO));
pButton = new Button(this, Rect(Point(75, 114), Point(100, 136)), "3", 0, new MessageCommand(BUTTON_THREE));
pButton = new Button(this, Rect(Point(105, 114), Point(130, 136)), "\u00D7", 0, new MessageCommand(BUTTON_TIMES));
pButton = new Button(this, Rect(Point(135, 114), Point(160, 136)), "\u00F7", 0, new MessageCommand(BUTTON_DIVIDE));
pButton = new Button(this, Rect(Point(15, 141), Point(40, 163)), "0", 0, new MessageCommand(BUTTON_ZERO));
pButton = new Button(this, Rect(Point(45, 141), Point(70, 163)), ".", 0, new MessageCommand(BUTTON_POINT));
pButton = new Button(this, Rect(Point(75, 141), Point(100, 164)), "\u00B1", 0, new MessageCommand(BUTTON_SIGN));
pButton = new Button(this, Rect(Point(105, 141), Point(160, 164)), "=", 0, new MessageCommand(BUTTON_EQUALS));
}
void CalculatorWindow::OnCommand(const MessageCommand *pMessage) {
const String minus = String("-");
const String point = String(".");
static char operation = 'n';
static double first_operand = 0.0;
char c[2] = {'0', '\0'};
int message = pMessage->GetID();
String * line = pText->GetDocument()->GetLine(0);
switch (message) {
case BUTTON_ZERO:
case BUTTON_ONE:
case BUTTON_TWO:
case BUTTON_THREE:
case BUTTON_FOUR:
case BUTTON_FIVE:
case BUTTON_SIX:
case BUTTON_SEVEN:
case BUTTON_EIGHT:
case BUTTON_NINE:
c[0] += message;
if (line->Compare("0.0")) {
pText->Append((const char *)&c);
} else {
pText->Set((const char *)&c);
}
break;
case BUTTON_PLUS:
operation = '+';
break;
case BUTTON_MINUS:
operation = '-';
break;
case BUTTON_TIMES:
operation = '*';
break;
case BUTTON_DIVIDE:
operation = '/';
break;
case BUTTON_EQUALS:
case BUTTON_POINT:
/* if(line->find(point)) { // FIXME: figure out how to do this more directly
pText->Append(point);
}*/
if (!strchr(line->c_str(), '.')) {
pText->Append(point);
}
break;
case BUTTON_SIGN:
if (line->c_str()[0] != '-') {
pText->Insert(minus, Point(0, 0));
} else {
pText->Remove(Point(0,0));
}
break;
case BUTTON_CLEAR:
operation = 'n';
first_operand = 0.0;
pText->Set("0.0");
break;
}
printf("line: %s; first_operand: %f; operator: %c\n", line->c_str(), first_operand, operation);
}
Calculator::Calculator(int argc, char* argv[]):
Application("application/x-vnd.Calculator", argc, argv) {
Rect r(Point(100, 100), Point(275, 275));
CalculatorWindow * pCalculatorWindow =
new CalculatorWindow(r, "Calculator", WINDOW_LAYOUT_NOTHING,
APPLICATION_WINDOW_NO_VIEW);
pCalculatorWindow->GetTitleWindow()->SetFlags(
(TitleWindowFlags)(pCalculatorWindow->GetTitleWindow()->GetFlags()
));
pCalculatorWindow->Show();
}
int main(int argc, char *argv[]) {
Calculator pCalculator(argc, argv);
return pCalculator.Run();
}
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