--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/opengl/hellogl/glwidget_d1.d	Tue Jul 14 15:28:22 2009 +0000
@@ -0,0 +1,267 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the example classes of the Qt Toolkit.
+**
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file.  Please review the following information
+** to ensure GNU General Public Licensing requirements will be met:
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
+** exception, Nokia gives you certain additional rights. These rights
+** are described in the Nokia Qt GPL Exception version 1.3, included in
+** the file GPL_EXCEPTION.txt in this package.
+**
+** Qt for Windows(R) Licensees
+** As a special exception, Nokia, as the sole copyright holder for Qt
+** Designer, grants users of the Qt/Eclipse Integration plug-in the
+** right for the Qt/Eclipse Integration to link to functionality
+** provided by Qt Designer and its related libraries.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+**
+****************************************************************************/
+
+
+import tango.math.Math;
+
+import qt.core.QPoint;
+import qt.gui.QMouseEvent;
+import qt.opengl.QGLWidget;
+import qt.gui.QColor;
+import qt.core.QSize;
+import qt.opengl.gl;
+import qt.opengl.glu;
+
+class GLWidget : QGLWidget
+{
+//    Q_OBJECT
+
+    public:
+        this(QWidget parent = null)
+        {
+            super(parent);
+            object = 0;
+            xRot = 0;
+            yRot = 0;
+            zRot = 0;
+
+            trolltechGreen = QColor.fromCmykF(0.40, 0.0, 1.0, 0.0);
+            trolltechPurple = QColor.fromCmykF(0.39, 0.39, 0.0, 0.0);
+        }
+
+        ~this()
+        {
+            makeCurrent();
+            glDeleteLists(object, 1);
+        }
+
+        QSize minimumSizeHint()
+        {
+            return QSize(50, 50);
+        }
+
+        QSize sizeHint()
+        {
+            return QSize(400, 400);
+        }
+
+
+    public: // slots:
+        void setXRotation(int angle)
+        {
+            normalizeAngle(&angle);
+            if (angle != xRot) {
+                xRot = angle;
+                xRotationChanged.emit(angle);
+                updateGL();
+            }
+        }
+
+        void setYRotation(int angle)
+        {
+            normalizeAngle(&angle);
+            if (angle != yRot) {
+                yRot = angle;
+                yRotationChanged.emit(angle);
+                updateGL();
+            }
+        }
+
+        void setZRotation(int angle)
+        {
+            normalizeAngle(&angle);
+            if (angle != zRot) {
+                zRot = angle;
+                zRotationChanged.emit(angle);
+                updateGL();
+            }
+        }
+
+        mixin Signal!("xRotationChanged", int);
+        mixin Signal!("yRotationChanged", int);
+        mixin Signal!("zRotationChanged", int);
+
+
+    protected:
+        void initializeGL()
+        {
+            qglClearColor(trolltechPurple.darker());
+            object = makeObject();
+            glShadeModel(GL_FLAT);
+            glEnable(GL_DEPTH_TEST);
+            glEnable(GL_CULL_FACE);
+        }
+
+        void paintGL()
+        {
+            glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+            glLoadIdentity();
+            glTranslated(0.0, 0.0, -10.0);
+            glRotated(xRot / 16.0, 1.0, 0.0, 0.0);
+            glRotated(yRot / 16.0, 0.0, 1.0, 0.0);
+            glRotated(zRot / 16.0, 0.0, 0.0, 1.0);
+            glCallList(object);
+        }
+
+        void resizeGL(int width, int height)
+        {
+            int side = qMin(width, height);
+            glViewport((width - side) / 2, (height - side) / 2, side, side);
+
+            glMatrixMode(GL_PROJECTION);
+            glLoadIdentity();
+            glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0);
+            glMatrixMode(GL_MODELVIEW);
+        }
+
+        void mousePressEvent(QMouseEvent event)
+        {
+            lastPos = QPoint(event.pos.x, event.pos.y);
+        }
+
+        void mouseMoveEvent(QMouseEvent event)
+        {
+            int dx = event.x - lastPos.x;
+            int dy = event.y - lastPos.y;
+
+            if (event.buttons() & Qt.LeftButton) {
+                setXRotation(xRot + 8 * dy);
+                setYRotation(yRot + 8 * dx);
+            } else if (event.buttons() & Qt.RightButton) {
+                setXRotation(xRot + 8 * dy);
+                setZRotation(zRot + 8 * dx);
+            }
+            lastPos = QPoint(event.pos.x, event.pos.y);
+        }
+    private:
+        GLuint makeObject()
+        {
+            GLuint list = glGenLists(1);
+            glNewList(list, GL_COMPILE);
+
+            glBegin(GL_QUADS);
+
+            GLdouble x1 = +0.06;
+            GLdouble y1 = -0.14;
+            GLdouble x2 = +0.14;
+            GLdouble y2 = -0.06;
+            GLdouble x3 = +0.08;
+            GLdouble y3 = +0.00;
+            GLdouble x4 = +0.30;
+            GLdouble y4 = +0.22;
+
+            quad(x1, y1, x2, y2, y2, x2, y1, x1);
+            quad(x3, y3, x4, y4, y4, x4, y3, x3);
+
+            extrude(x1, y1, x2, y2);
+            extrude(x2, y2, y2, x2);
+            extrude(y2, x2, y1, x1);
+            extrude(y1, x1, x1, y1);
+            extrude(x3, y3, x4, y4);
+            extrude(x4, y4, y4, x4);
+            extrude(y4, x4, y3, x3);
+
+            const double Pi = 3.14159265358979323846;
+            const int NumSectors = 200;
+
+            for (int i = 0; i < NumSectors; ++i) {
+                double angle1 = (i * 2 * Pi) / NumSectors;
+                GLdouble x5 = 0.30 * sin(angle1);
+                GLdouble y5 = 0.30 * cos(angle1);
+                GLdouble x6 = 0.20 * sin(angle1);
+                GLdouble y6 = 0.20 * cos(angle1);
+
+                double angle2 = ((i + 1) * 2 * Pi) / NumSectors;
+                GLdouble x7 = 0.20 * sin(angle2);
+                GLdouble y7 = 0.20 * cos(angle2);
+                GLdouble x8 = 0.30 * sin(angle2);
+                GLdouble y8 = 0.30 * cos(angle2);
+
+                quad(x5, y5, x6, y6, x7, y7, x8, y8);
+
+                extrude(x6, y6, x7, y7);
+                extrude(x8, y8, x5, y5);
+            }
+
+            glEnd();
+
+            glEndList();
+            return list;
+        }
+
+        void quad(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2,
+                   GLdouble x3, GLdouble y3, GLdouble x4, GLdouble y4)
+        {
+            qglColor(trolltechGreen);
+
+            glVertex3d(x1, y1, -0.05);
+            glVertex3d(x2, y2, -0.05);
+            glVertex3d(x3, y3, -0.05);
+            glVertex3d(x4, y4, -0.05);
+
+            glVertex3d(x4, y4, +0.05);
+            glVertex3d(x3, y3, +0.05);
+            glVertex3d(x2, y2, +0.05);
+            glVertex3d(x1, y1, +0.05);
+        }
+
+        void extrude(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2)
+        {
+            qglColor(trolltechGreen.darker(rndint(250 + (100 * x1))));
+
+            glVertex3d(x1, y1, +0.05);
+            glVertex3d(x2, y2, +0.05);
+            glVertex3d(x2, y2, -0.05);
+            glVertex3d(x1, y1, -0.05);
+        }
+
+        void normalizeAngle(int *angle)
+        {
+            while (*angle < 0)
+                *angle += 360 * 16;
+            while (*angle > 360 * 16)
+                *angle -= 360 * 16;
+        }
+
+        GLuint object;
+        int xRot;
+        int yRot;
+        int zRot;
+        QPoint lastPos;
+        QColor trolltechGreen;
+        QColor trolltechPurple;
+}
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