8 files changed, 412 insertions, 0 deletions
diff --git a/examples/opengl/box/README b/examples/opengl/box/README
new file mode 100644
index 000000000..113f82d6c
--- /dev/null
+++ b/examples/opengl/box/README
@@ -0,0 +1,8 @@
+
+The box example
+
+This example program shows how to use OpenGL in Qt: Put your OpenGL
+code in a class inherited from QGLWidget. The resulting subclass may
+be used like any other Qt widget, with signals and slots, geometry
+management, etc..
+
diff --git a/examples/opengl/box/box.doc b/examples/opengl/box/box.doc
new file mode 100644
index 000000000..51297fa35
--- /dev/null
+++ b/examples/opengl/box/box.doc
@@ -0,0 +1,18 @@
+/*!   \page opengl-box-example.html
+
+  \ingroup opengl-examples
+  \title OpenGL Box Example
+
+This example demonstrates how to use OpenGL in Qt. 
+
+Essentially, all you do is put your OpenGL code in a class inherited
+from QGLWidget. This class may then be used like any other Qt widget,
+including the use of signals and slots and geometry management.
+
+See \c{$QTDIR/examples/opengl/box} for the source code.
+
+*/
+
+
+
+
diff --git a/examples/opengl/box/box.pro b/examples/opengl/box/box.pro
new file mode 100644
index 000000000..80784531f
--- /dev/null
+++ b/examples/opengl/box/box.pro
@@ -0,0 +1,15 @@
+TEMPLATE	= app
+TARGET		= box
+
+CONFIG		+= qt opengl warn_on release
+CONFIG -= dlopen_opengl
+
+DEPENDPATH	= ../include
+
+REQUIRES        = opengl
+
+HEADERS		= glbox.h \
+		  globjwin.h
+SOURCES		= glbox.cpp \
+		  globjwin.cpp \
+		  main.cpp
diff --git a/examples/opengl/box/glbox.cpp b/examples/opengl/box/glbox.cpp
new file mode 100644
index 000000000..aa1792241
--- /dev/null
+++ b/examples/opengl/box/glbox.cpp
@@ -0,0 +1,170 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple TQGLWidget displaying an openGL wireframe box
+**
+** The OpenGL code is mostly borrowed from Brian Pauls "spin" example
+** in the Mesa distribution
+**
+****************************************************************************/
+
+#include "glbox.h"
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4305) // init: truncation from const double to float
+#endif
+
+/*!
+  Create a GLBox widget
+*/
+
+GLBox::GLBox( TQWidget* parent, const char* name )
+    : TQGLWidget( parent, name )
+{
+    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( 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( 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();
+}
diff --git a/examples/opengl/box/glbox.h b/examples/opengl/box/glbox.h
new file mode 100644
index 000000000..a04a8122a
--- /dev/null
+++ b/examples/opengl/box/glbox.h
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple TQGLWidget displaying an openGL wireframe box
+**
+****************************************************************************/
+
+#ifndef GLBOX_H
+#define GLBOX_H
+
+#include <qgl.h>
+
+
+class GLBox : public TQGLWidget
+{
+    Q_OBJECT
+
+public:
+
+    GLBox( TQWidget* parent, const char* name );
+    ~GLBox();
+
+public slots:
+
+    void		setXRotation( int degrees );
+    void		setYRotation( int degrees );
+    void		setZRotation( int degrees );
+
+protected:
+
+    void		initializeGL();
+    void		paintGL();
+    void		resizeGL( int w, int h );
+
+    virtual GLuint 	makeObject();
+
+private:
+
+    GLuint object;
+    GLfloat xRot, yRot, zRot, scale;
+
+};
+
+
+#endif // GLBOX_H
diff --git a/examples/opengl/box/globjwin.cpp b/examples/opengl/box/globjwin.cpp
new file mode 100644
index 000000000..f4af52c36
--- /dev/null
+++ b/examples/opengl/box/globjwin.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#include <qpushbutton.h>
+#include <qslider.h>
+#include <qlayout.h>
+#include <qframe.h>
+#include <qmenubar.h>
+#include <qpopupmenu.h>
+#include <qapplication.h>
+#include <qkeycode.h>
+#include "globjwin.h"
+#include "glbox.h"
+
+
+GLObjectWindow::GLObjectWindow( TQWidget* parent, const char* name )
+    : TQWidget( parent, name )
+{
+
+    // Create a menu
+    TQPopupMenu *file = new TQPopupMenu( this );
+    file->insertItem( "Exit",  qApp, SLOT(tquit()), CTRL+Key_Q );
+
+    // Create a menu bar
+    TQMenuBar *m = new TQMenuBar( this );
+    m->setSeparator( TQMenuBar::InWindowsStyle );
+    m->insertItem("&File", file );
+
+    // Create a nice frame to put around the OpenGL widget
+    TQFrame* f = new TQFrame( this, "frame" );
+    f->setFrameStyle( TQFrame::Sunken | TQFrame::Panel );
+    f->setLineWidth( 2 );
+
+    // Create our OpenGL widget
+    GLBox* c = new GLBox( f, "glbox");
+
+    // Create the three sliders; one for each rotation axis
+    TQSlider* x = new TQSlider ( 0, 360, 60, 0, TQSlider::Vertical, this, "xsl" );
+    x->setTickmarks( TQSlider::Left );
+    TQObject::connect( x, SIGNAL(valueChanged(int)),c,SLOT(setXRotation(int)) );
+
+    TQSlider* y = new TQSlider ( 0, 360, 60, 0, TQSlider::Vertical, this, "ysl" );
+    y->setTickmarks( TQSlider::Left );
+    TQObject::connect( y, SIGNAL(valueChanged(int)),c,SLOT(setYRotation(int)) );
+
+    TQSlider* z = new TQSlider ( 0, 360, 60, 0, TQSlider::Vertical, this, "zsl" );
+    z->setTickmarks( TQSlider::Left );
+    TQObject::connect( z, SIGNAL(valueChanged(int)),c,SLOT(setZRotation(int)) );
+
+
+    // Now that we have all the widgets, put them into a nice layout
+
+    // Put the sliders on top of each other
+    TQVBoxLayout* vlayout = new TQVBoxLayout( 20, "vlayout");
+    vlayout->addWidget( x );
+    vlayout->addWidget( y );
+    vlayout->addWidget( z );
+
+    // Put the GL widget inside the frame
+    TQHBoxLayout* flayout = new TQHBoxLayout( f, 2, 2, "flayout");
+    flayout->addWidget( c, 1 );
+
+    // Top level layout, puts the sliders to the left of the frame/GL widget
+    TQHBoxLayout* hlayout = new TQHBoxLayout( this, 20, 20, "hlayout");
+    hlayout->setMenuBar( m );
+    hlayout->addLayout( vlayout );
+    hlayout->addWidget( f, 1 );
+}
diff --git a/examples/opengl/box/globjwin.h b/examples/opengl/box/globjwin.h
new file mode 100644
index 000000000..98dad489e
--- /dev/null
+++ b/examples/opengl/box/globjwin.h
@@ -0,0 +1,32 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** The GLObjectWindow contains a GLBox and three sliders connected to
+** the GLBox's rotation slots.
+**
+****************************************************************************/
+
+#ifndef GLOBJWIN_H
+#define GLOBJWIN_H
+
+#include <qwidget.h>
+
+
+class GLObjectWindow : public TQWidget
+{
+    Q_OBJECT
+public:
+    GLObjectWindow( TQWidget* parent = 0, const char* name = 0 );
+
+};
+
+
+#endif // GLOBJWIN_H
diff --git a/examples/opengl/box/main.cpp b/examples/opengl/box/main.cpp
new file mode 100644
index 000000000..4a3863232
--- /dev/null
+++ b/examples/opengl/box/main.cpp
@@ -0,0 +1,42 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+//
+// TQt OpenGL example: Box
+//
+// A small example showing how a GLWidget can be used just as any TQt widget
+// 
+// File: main.cpp
+//
+// The main() function 
+// 
+
+#include "globjwin.h"
+#include <qapplication.h>
+#include <qgl.h>
+
+/*
+  The main program is here. 
+*/
+
+int main( int argc, char **argv )
+{
+    TQApplication::setColorSpec( TQApplication::CustomColor );
+    TQApplication a(argc,argv);
+
+    if ( !TQGLFormat::hasOpenGL() ) {
+	qWarning( "This system has no OpenGL support. Exiting." );
+	return -1;
+    }
+
+    GLObjectWindow w;
+    w.resize( 400, 350 );
+    a.setMainWidget( &w );
+    w.show();
+    return a.exec();
+}