// Copyright (C) 2015 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause /**************************************************************************** ** ** 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 #include //! [0] #include //! [0] /*! Create a GLBox widget */ GLBox::GLBox(QWidget *parent, const char *name) : QOpenGLWidget(parent) { setObjectName(name); QSurfaceFormat format; format.setVersion(1, 1); format.setProfile(QSurfaceFormat::CompatibilityProfile); setFormat(format); } /*! Release allocated resources */ GLBox::~GLBox() { makeCurrent(); if (m_object) glDeleteLists(m_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(); glTranslated(0, 0, -10); glScaled(m_scale, m_scale, m_scale); glRotated(m_xRot, 1, 0, 0); glRotated(m_yRot, 0, 1, 0); glRotated(m_zRot, 0, 0, 1); glCallList(m_object); } /*! Set up the OpenGL rendering state, and define display list */ void GLBox::initializeGL() { initializeOpenGLFunctions(); glClearColor(0, 0, 0, 1); // Let OpenGL clear to black m_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, 1, -1, 1, 5, 15); 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); glColor3d(1, 1, 1); // Shorthand for glColor3f or glIndex glLineWidth(2); glBegin(GL_LINE_LOOP); glVertex3d( 1, 0.5, -0.4); glVertex3d( 1, -0.5, -0.4); glVertex3d(-1, -0.5, -0.4); glVertex3d(-1, 0.5, -0.4); glEnd(); glBegin(GL_LINE_LOOP); glVertex3d( 1, 0.5, 0.4); glVertex3d( 1, -0.5, 0.4); glVertex3d(-1, -0.5, 0.4); glVertex3d(-1, 0.5, 0.4); glEnd(); glBegin(GL_LINES); glVertex3d( 1, 0.5, -0.4); glVertex3d( 1, 0.5, 0.4); glVertex3d( 1, -0.5, -0.4); glVertex3d( 1, -0.5, 0.4); glVertex3d(-1, -0.5, -0.4); glVertex3d(-1, -0.5, 0.4); glVertex3d(-1, 0.5, -0.4); glVertex3d(-1, 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) { m_xRot = GLdouble(degrees % 360); update(); } /*! Set the rotation angle of the object to \e degrees around the Y axis. */ void GLBox::setYRotation(int degrees) { m_yRot = GLdouble(degrees % 360); update(); } /*! Set the rotation angle of the object to \e degrees around the Z axis. */ void GLBox::setZRotation(int degrees) { m_zRot = GLdouble(degrees % 360); update(); } //! [1] class ObjectSafetyImpl : public QAxAggregated, public IObjectSafety { public: //! [1] //! [2] explicit ObjectSafetyImpl() = default; long queryInterface(const QUuid &iid, void **iface) override { *iface = nullptr; if (iid != IID_IObjectSafety) return E_NOINTERFACE; *iface = static_cast(this); AddRef(); return S_OK; } //! [2] //! [3] QAXAGG_IUNKNOWN; //! [3] //! [4] HRESULT WINAPI GetInterfaceSafetyOptions(REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions) override { Q_UNUSED(riid); *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) override { Q_UNUSED(riid); Q_UNUSED(pdwSupportedOptions); Q_UNUSED(pdwEnabledOptions); return S_OK; } }; //! [4] //! [5] QAxAggregated *GLBox::createAggregate() { return new ObjectSafetyImpl(); } //! [5]