cosmetic to MainWindow,

drop does not work for widget,
fixed offset problem,
add esc key

QtMeshViewer/Source/OglViewerWidget.cpp

@@ -1,6 +1,8 @@
 #include "..\Header\OglViewerWidget.h"
 
 #include <QMouseEvent>
+#include <QDropEvent>
+#include <QMimeData>
 #include <math.h>
 #include <iostream>
 
@@ -16,6 +18,7 @@ OglViewerWidget::OglViewerWidget(QWidget *parent) :
 {
 	setFocus();
 	m_translation.setZ(DEFAULT_Z_DISTANCE);
+	setAcceptDrops(true);
 }
 
 OglViewerWidget::~OglViewerWidget()
@@ -89,6 +92,11 @@ void OglViewerWidget::wheelEvent(QWheelEvent *e)
 	update();
 }
 
+void OglViewerWidget::dropEvent(QDropEvent * e)
+{
+	std::cout << e->mimeData()->text().toStdString() << std::endl;
+}
+
 void OglViewerWidget::keyPressEvent(QKeyEvent *e)
 {
 	if (e->key() == Qt::Key_Space)
@@ -96,6 +104,10 @@ void OglViewerWidget::keyPressEvent(QKeyEvent *e)
 		m_rotation = QQuaternion();
 		m_translation = { 0.0, 0.0, DEFAULT_Z_DISTANCE };
 	}
+	else if (e->key() == Qt::Key_Escape)
+	{
+		parentWidget()->close();
+	}
 	update();
 }
 
@@ -103,7 +115,7 @@ void OglViewerWidget::initializeGL()
 {
 	initializeOpenGLFunctions();
 
-	glClearColor(0, 0, 0, 1);
+	glClearColor(0.5000f, 0.8000f, 1.0000f, 0.0000f);
 
 	initShaders();
 
@@ -174,4 +186,9 @@ void OglViewerWidget::initShaders()
 
 
 /////////////////////////////////////////////////////////////////////////
-// public functions
+// public functions
+
+void OglViewerWidget::openFile(const char * filePath)
+{
+	m_dataEngine->loadFile(filePath);
+}