From 4745d778aede297ccaaeaaf4421d654d8109ca3e Mon Sep 17 00:00:00 2001
From: Matt Turner <mattst88@gmail.com>
Date: Tue, 18 Dec 2007 20:04:30 +0000
Subject: Make the buttons do stuff.

git-svn-id: svn://mattst88.com/svn/calculator/trunk@6 40705d3a-cdd4-446d-8ced-669f9f7342eb
---
 calculator.cpp | 40 +++++++++++++++++++++++++++++++++++++++-
 calculator.h   |  1 -
 2 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/calculator.cpp b/calculator.cpp
index 45ab6ce..8a5c5b3 100755
--- a/calculator.cpp
+++ b/calculator.cpp
@@ -37,7 +37,15 @@ CalculatorWindow::CalculatorWindow(	const Rect &rFrame,
 }
 
 void CalculatorWindow::OnCommand(const MessageCommand *pMessage) {
-	switch (pMessage->GetID()) {
+	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:
@@ -48,18 +56,48 @@ void CalculatorWindow::OnCommand(const MessageCommand *pMessage) {
 		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[]):
diff --git a/calculator.h b/calculator.h
index 87cd49a..2332669 100755
--- a/calculator.h
+++ b/calculator.h
@@ -37,5 +37,4 @@ class CalculatorWindow : public ApplicationWindow {
 		void    OnCommand(	const MessageCommand *pMessage);
 
 		TextView * pText;
-
 };
-- 
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