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#include "calculator.h"
CalculatorWindow::CalculatorWindow( const Rect &rFrame,
const String& szTitle,
unsigned int nWindowLayoutFlags,
unsigned int uiFlags
): ApplicationWindow(rFrame, szTitle, nWindowLayoutFlags, 0, uiFlags)
{
Clear();
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(".");
char c[2] = {'0', '\0'};
int message = pMessage->GetID();
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 (new_operand) {
pText->Set((const char *)&c);
new_operand = false;
} else {
pText->Append((const char *)&c);
}
break;
case BUTTON_PLUS:
case BUTTON_MINUS:
case BUTTON_TIMES:
case BUTTON_DIVIDE:
case BUTTON_EQUALS:
doOperation(message);
break;
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:
Clear();
pText->Set("0.0");
break;
}
printf("line: %s; total: %.0f; operand: %.0f; operator: %d\n", line->c_str(), total, operand, operation);
}
void CalculatorWindow::Clear() {
operation = BUTTON_PLUS;
total = 0.0;
operand = 0.0;
new_operand = true;
}
void CalculatorWindow::doOperation(int next_operation) {
char str[32] = {0};
operand = atof(line->c_str());
switch (operation) {
case BUTTON_PLUS:
total += operand;
break;
case BUTTON_MINUS:
total -= operand;
break;
case BUTTON_TIMES:
total *= operand;
break;
case BUTTON_DIVIDE:
total /= operand;
break;
}
snprintf(str, 32, "%f", total);
pText->Set((const char *)&str);
operation = next_operation;
operand = 0.0;
new_operand = true;
}
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 | WINDOW_FLAG_NOT_SIZEABLE);
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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