Add `Info` class for displaying info

src/Info/Info.cpp

@@ -0,0 +1,36 @@
+#include "Info.h"
+
+namespace ofx {
+namespace piMapper {
+
+Info::Info(){
+	_visible = false;
+}
+
+void Info::draw(){
+	if(_visible){
+		stringstream ss;
+		ss << "There are 4 modes:\n\n";
+		ss << " 1. Presentation mode\n";
+		ss << " 2. Texture mapping mode\n";
+		ss << " 3. Projection mapping mode\n";
+		ss << " 4. Source selection mode\n\n";
+		ss << "You can switch between the modes by using <1>, <2>, <3> and <4> "
+			"keys on the keyboard.\n\n";
+		ss << "Press <t> to add new triangle surface\n";
+		ss << "Press <q> to add new quad surface\n";
+		ss << "Press <s> to save the composition\n";
+		ss << "Press <f> to toggle fullscreen\n";
+		ss << "Press <i> to hide this message";
+		ofDrawBitmapStringHighlight(ss.str(), 10, 20,
+									ofColor(0, 0, 0, 100),
+									ofColor(255, 255, 255, 200));
+	}
+}
+
+void Info::toggle(){
+	_visible = !_visible;
+}
+
+} // namespace piMapper
+} // namespace ofx

src/Info/Info.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "ofMain.h"
+
+namespace ofx {
+namespace piMapper {
+
+class Info {
+	public:
+		Info();
+	
+		void draw();
+		void toggle();
+	
+	private:
+		bool _visible;
+};
+
+} // namespace piMapper
+} // namespace ofx