examples/activeqt/opengl/glbox.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/activeqt/opengl/glbox.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,250 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple QGLWidget displaying an openGL wireframe box
+**
+** The OpenGL code is mostly borrowed from Brian Pauls "spin" example
+** in the Mesa distribution
+**
+****************************************************************************/
+
+#include "glbox.h"
+#include <QAxAggregated>
+#include <QUuid>
+//! [0]
+#include <objsafe.h>
+//! [0]
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4305) // init: truncation from const double to float
+#endif
+
+/*!
+  Create a GLBox widget
+*/
+
+GLBox::GLBox( QWidget* parent, const char* name )
+    : QGLWidget( parent )
+{
+    xRot = yRot = zRot = 0.0;		// default object rotation
+    scale = 1.25;			// default object scale
+    object = 0;
+}
+
+
+/*!
+  Release allocated resources
+*/
+
+GLBox::~GLBox()
+{
+    makeCurrent();
+    glDeleteLists( object, 1 );
+}
+
+
+/*!
+  Paint the box. The actual openGL commands for drawing the box are
+  performed here.
+*/
+
+void GLBox::paintGL()
+{
+    glClear( GL_COLOR_BUFFER_BIT );
+
+    glLoadIdentity();
+    glTranslatef( 0.0, 0.0, -10.0 );
+    glScalef( scale, scale, scale );
+
+    glRotatef( xRot, 1.0, 0.0, 0.0 ); 
+    glRotatef( yRot, 0.0, 1.0, 0.0 ); 
+    glRotatef( zRot, 0.0, 0.0, 1.0 );
+
+    glCallList( object );
+}
+
+
+/*!
+  Set up the OpenGL rendering state, and define display list
+*/
+
+void GLBox::initializeGL()
+{
+    qglClearColor(Qt::black); 		// Let OpenGL clear to black
+    object = makeObject();		// Generate an OpenGL display list
+    glShadeModel( GL_FLAT );
+}
+
+
+
+/*!
+  Set up the OpenGL view port, matrix mode, etc.
+*/
+
+void GLBox::resizeGL( int w, int h )
+{
+    glViewport( 0, 0, (GLint)w, (GLint)h );
+    glMatrixMode( GL_PROJECTION );
+    glLoadIdentity();
+    glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
+    glMatrixMode( GL_MODELVIEW );
+}
+
+
+/*!
+  Generate an OpenGL display list for the object to be shown, i.e. the box
+*/
+
+GLuint GLBox::makeObject()
+{	
+    GLuint list;
+
+    list = glGenLists( 1 );
+
+    glNewList( list, GL_COMPILE );
+
+    qglColor(Qt::white);		      // Shorthand for glColor3f or glIndex
+
+    glLineWidth( 2.0 );
+
+    glBegin( GL_LINE_LOOP );
+    glVertex3f(  1.0,  0.5, -0.4 );
+    glVertex3f(  1.0, -0.5, -0.4 );
+    glVertex3f( -1.0, -0.5, -0.4 );
+    glVertex3f( -1.0,  0.5, -0.4 );
+    glEnd();
+
+    glBegin( GL_LINE_LOOP );
+    glVertex3f(  1.0,  0.5, 0.4 );
+    glVertex3f(  1.0, -0.5, 0.4 );
+    glVertex3f( -1.0, -0.5, 0.4 );
+    glVertex3f( -1.0,  0.5, 0.4 );
+    glEnd();
+
+    glBegin( GL_LINES );
+    glVertex3f(  1.0,  0.5, -0.4 );   glVertex3f(  1.0,  0.5, 0.4 );
+    glVertex3f(  1.0, -0.5, -0.4 );   glVertex3f(  1.0, -0.5, 0.4 );
+    glVertex3f( -1.0, -0.5, -0.4 );   glVertex3f( -1.0, -0.5, 0.4 );
+    glVertex3f( -1.0,  0.5, -0.4 );   glVertex3f( -1.0,  0.5, 0.4 );
+    glEnd();
+
+    glEndList();
+
+    return list;
+}
+
+
+/*!
+  Set the rotation angle of the object to \e degrees around the X axis.
+*/
+
+void GLBox::setXRotation( int degrees )
+{
+    xRot = (GLfloat)(degrees % 360);
+    updateGL();
+}
+
+
+/*!
+  Set the rotation angle of the object to \e degrees around the Y axis.
+*/
+
+void GLBox::setYRotation( int degrees )
+{
+    yRot = (GLfloat)(degrees % 360);
+    updateGL();
+}
+
+
+/*!
+  Set the rotation angle of the object to \e degrees around the Z axis.
+*/
+
+void GLBox::setZRotation( int degrees )
+{
+    zRot = (GLfloat)(degrees % 360);
+    updateGL();
+}
+
+//! [1]
+class ObjectSafetyImpl : public QAxAggregated, 
+			 public IObjectSafety
+{
+public:
+//! [1] //! [2]
+    ObjectSafetyImpl() {}
+
+    long queryInterface( const QUuid &iid, void **iface )
+    {
+	*iface = 0;
+	if ( iid == IID_IObjectSafety )
+	    *iface = (IObjectSafety*)this;
+	else
+	    return E_NOINTERFACE;
+
+	AddRef();
+	return S_OK;
+    }
+
+//! [2] //! [3]
+    QAXAGG_IUNKNOWN;
+
+//! [3] //! [4]
+    HRESULT WINAPI GetInterfaceSafetyOptions( REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions )
+    {
+	*pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER;
+	*pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER;
+	return S_OK;
+    }
+    HRESULT WINAPI SetInterfaceSafetyOptions( REFIID riid, DWORD pdwSupportedOptions, DWORD pdwEnabledOptions )
+    {
+	return S_OK;
+    }
+};
+//! [4] //! [5]
+
+QAxAggregated *GLBox::createAggregate()
+{
+    return new ObjectSafetyImpl();
+}
+//! [5]