Initial firmware commit.

firmware/common/ui.cpp

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui.hpp"
+
+#include <algorithm>
+
+namespace ui {
+
+bool Rect::contains(const Point p) const {
+	return (p.x >= left()) && (p.y >= top()) &&
+	       (p.x < right()) && (p.y < bottom());
+}
+
+Rect Rect::intersect(const Rect& o) const {
+	const auto x1 = std::max(left(), o.left());
+	const auto x2 = std::min(right(), o.right());
+	const auto y1 = std::max(top(), o.top());
+	const auto y2 = std::min(bottom(), o.bottom());
+	if( (x2 >= x1) && (y2 > y1) ) {
+		return {
+			x1, y1,
+			static_cast<Dim>(x2 - x1), static_cast<Dim>(y2 - y1) };
+	} else {
+		return { };
+	}
+}
+
+Rect& Rect::operator+=(const Rect& p) {
+	if( is_empty() ) {
+		*this = p;
+	}
+	if( !p.is_empty() ) {
+		const auto x1 = std::min(left(), p.left());
+		const auto y1 = std::min(top(), p.top());
+		pos = { x1, y1 };
+		const auto x2 = std::max(right(), p.right());
+		const auto y2 = std::max(bottom(), p.bottom());
+		size = { static_cast<Dim>(x2 - x1), static_cast<Dim>(y2 - y1) };
+	}
+	return *this;
+}
+
+} /* namespace ui */