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[提问]qt+ogre，widget鼠标消息响应问题请教 [复制链接]

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离线louisir
新手上路
 
只看楼主 倒序阅读 楼主  发表于: 2012-03-12
用的是网上找的一个ogrewidget类，继承自qwidget
FOgerWidget.h
复制代码
  1. class FOgreWidget : public QWidget
  2. {
  3.     Q_OBJECT
  4. public:
  5.     FOgreWidget(QWidget* parent = NULL, QString strInsName = "ogrehead");
  6.     ~FOgreWidget();
  8. protected:
  9.     // 事件处理函数
  10.     virtual void resizeEvent(QResizeEvent* evt);//窗口可能缩放
  11.     virtual void timerEvent(QTimerEvent* evt);//可以设一时钟来更新窗口
  12.     virtual void paintEvent(QPaintEvent* evt);//呵，当然得处理了
  13.     virtual void keyPressEvent(QKeyEvent* evt);
  14.     virtual void keyReleaseEvent(QKeyEvent *e);
  15.     virtual void mousePressEvent(QMouseEvent* evt);
  16.     virtual void wheelEvent(QWheelEvent* evt);
  17.     
  18.     bool LoadPlugin();
  19.     bool LoadResource();
  20.     bool CreateSceneManager();
  21.     bool CreateRenderWindow();
  22.     bool CreateDefaultCamera();
  23.     bool SelectRenderSystem();
  24.     bool CreateScene();
  25.     void updateDraw();
  26.     void CreateLight();
  27.     std::string GetAppDirectory();
  28.     void SetModeColor(DWORD vColor);
  30.     Ogre::SceneManager*    m_pSceneManager;
  31.     Ogre::RenderWindow*    m_pRenderWindow;
  32.     Ogre::Camera*        m_pDefCamera;
  33.     Ogre::Viewport*        m_pDefViewport;  
  34.     Ogre::Root*            m_pRoot;
  35.     Ogre::Entity*        m_pMainEnt;
  36.     Ogre::SceneNode*    m_pMainNode;
  37.     Ogre::Light*        m_pMainLight;  
  38. public :
  39.     bool Initialize() ;
  40. private:
  41.     QString  m_strInsName_;    
  42. };

FOgreWidget.cpp
复制代码
  1. FOgreWidget::FOgreWidget(QWidget* parent, QString strInsName)
  2.     : QWidget(parent,Qt::WFlags(Qt::MSWindowsOwnDC | Qt::Widget)),
  3.     m_strInsName_(strInsName)
  4. {
  5.     m_pSceneManager        =    NULL;
  6.     m_pRenderWindow        =    NULL;
  7.     m_pDefCamera        =    NULL;
  8.     m_pDefViewport        =    NULL;
  9.     m_pRoot                =    NULL;
  10.     m_pMainEnt            =    NULL;
  11.     m_pMainNode            =    NULL;
  12.     m_pMainLight        =    NULL;
  13. }
  16. FOgreWidget::~FOgreWidget()
  17. {
  18.     // destroy Viewport and RenderWindow
  19.     if(m_pDefViewport)
  20.     {
  21.         m_pRenderWindow->removeViewport(m_pDefViewport->getZOrder());
  22.         m_pDefViewport = NULL;
  23.     }
  25.     if(m_pRenderWindow)
  26.     {
  27.         Ogre::Root::getSingleton().detachRenderTarget(m_pRenderWindow);
  28.         m_pRenderWindow = NULL;
  29.     }    
  30. }
  33. void FOgreWidget::paintEvent(QPaintEvent *evt)
  34. {
  35.     Q_UNUSED(evt);  
  36.     updateDraw();
  37. }
  39. void FOgreWidget::timerEvent(QTimerEvent* evt)
  40. {
  41.     Q_UNUSED(evt);
  42.     updateDraw();
  43. }
  45. void FOgreWidget::resizeEvent(QResizeEvent *evt)
  46. {
  47.     QWidget::resizeEvent(evt);
  48. }
  49. void FOgreWidget::keyReleaseEvent(QKeyEvent *e)
  50. {
  51.     Ogre::Vector3 v = m_pDefCamera->getDirection();
  52.     v.normalise();
  53.     v *=2;
  54.     m_pDefCamera->moveRelative(v);
  55. }
  57. void FOgreWidget::keyPressEvent(QKeyEvent* evt)
  58. {
  59.     QWidget::keyPressEvent(evt);
  60.     Ogre::Vector3 v = m_pDefCamera->getDirection();
  61.     v.normalise();
  62.     v *=2;
  63.     m_pDefCamera->moveRelative(v);
  64. }
  66. void FOgreWidget::mousePressEvent(QMouseEvent* evt)
  67. {
  68.     QWidget::mousePressEvent(evt);
  69. }
  71. void FOgreWidget::wheelEvent(QWheelEvent* evt)
  72. {
  73.     QWidget::wheelEvent(evt);
  74. }
  76. bool FOgreWidget::LoadPlugin()
  77. {  
  78.     assert(m_pRoot!=NULL);
  80. #if defined(_DEGUG) || defined(DEBUG)
  81.     // Load D3D9 Render System(debug)
  82.     m_pRoot->loadPlugin("RenderSystem_Direct3D9_d");
  84.     // Load OpenGL Render System(debug)
  85.     m_pRoot->loadPlugin("RenderSystem_GL_d");
  87.     // Load partical system(debug)
  88.     m_pRoot->loadPlugin("Plugin_ParticleFX_d");
  90.     // Load octree
  91.     m_pRoot->loadPlugin("Plugin_OctreeSceneManager_d");
  92. #else
  93.     // Load D3D9 Render System
  94.     m_pRoot->loadPlugin("RenderSystem_Direct3D9");
  96.     // Load OpenGL Render System
  97.     m_pRoot->loadPlugin("RenderSystem_GL");
  99.     // Load partical system
  100.     m_pRoot->loadPlugin("Plugin_ParticleFX");
  102.     // Load octree
  103.     m_pRoot->loadPlugin("Plugin_OctreeSceneManager");
  104. #endif  
  105.     return true;
  106. }
  107. std::string FOgreWidget::GetAppDirectory()
  108. {
  109.     return QApplication::applicationDirPath().toStdString() + "/";
  110. }
  112. bool FOgreWidget::LoadResource()
  113. {
  114.     // Load resource paths from config file
  115.     Ogre::ConfigFile cf;
  116.     cf.load(GetAppDirectory() + "resources.cfg");
  118.     // Go through all sections & settings in the file
  119.     Ogre::ConfigFile::SectionIterator seci = cf.getSectionIterator();
  121.     Ogre::String secName, typeName, archName;
  122.     
  123.     while(seci.hasMoreElements())
  124.     {
  125.         secName = seci.peekNextKey();
  126.         Ogre::ConfigFile::SettingsMultiMap *settings = seci.getNext();
  127.         Ogre::ConfigFile::SettingsMultiMap::iterator i;
  128.         for(i = settings->begin(); i != settings->end(); ++i)
  129.         {
  130.             typeName = i->first;
  131.             if (i->second.find(":") == -1)
  132.                 archName = GetAppDirectory() + i->second;
  133.             else
  134.                 archName = i->second;
  135.             
  136.             
  137.             Ogre::ResourceGroupManager::getSingleton().addResourceLocation(archName, typeName, secName);
  138.         }
  139.     }
  141.     return true;
  142. }
  144. bool FOgreWidget::CreateSceneManager()
  145. {
  146.     assert(m_pRoot);
  147.     m_pSceneManager = m_pRoot->createSceneManager(Ogre::ST_GENERIC);
  148.     return true;
  149. }
  151. bool FOgreWidget::CreateDefaultCamera()
  152. {
  153.     assert(m_pRoot);
  154.     assert(m_pSceneManager);
  155.     assert(m_pRenderWindow);
  157.     //m_pDefCamera = m_pSceneManager->createCamera(strName);
  158.     m_pDefCamera = m_pSceneManager->createCamera("MyCamera");
  159.     m_pDefCamera->setPosition(Ogre::Vector3(12, 8, 2));
  160.     m_pDefCamera->lookAt(Ogre::Vector3(6, 7, 0));
  161.     m_pDefCamera->setNearClipDistance(1);
  162.     m_pDefViewport = m_pRenderWindow->addViewport(m_pDefCamera);
  163.     m_pDefViewport->setBackgroundColour(Ogre::ColourValue(0, 0.0, 0.0, 1));
  164.     m_pDefCamera->setAspectRatio(Ogre::Real(m_pDefViewport->getActualWidth()) / Ogre::Real(m_pDefViewport->getActualHeight()));
  166.     // Make window active and post an update
  167.     m_pRenderWindow->setActive(true);
  168.     m_pRenderWindow->update();
  170.     return true;
  171. }
  173. // Create Render Window
  174. bool FOgreWidget::CreateRenderWindow()
  175. {
  176.     assert(m_pRoot);
  178.     Ogre::NameValuePairList params;
  179.     params["left"]                 = "0";
  180.     params["top"]                  = "0";
  181.     params["border"]               = "none";
  183.     //params["externalWindowHandle"] = Ogre::StringConverter::toString((size_t)(HWND)winId());
  184.     params["parentWindowHandle"] = Ogre::StringConverter::toString((size_t)(HWND)winId());
  186.     string strName;
  187.     strName = m_strInsName_.toStdString();
  188.     strName += "_Window";
  190.     m_pRenderWindow = m_pRoot->createRenderWindow(strName, width(), height(), false, &params);
  192.     if(NULL == m_pRenderWindow)
  193.         return false;
  195.     return true;
  196. }
  199. bool FOgreWidget::Initialize( )
  200. {
  201.     // already inited
  202.     if(m_pRoot != NULL)
  203.         return true;
  205.     if(NULL == Ogre::Root::getSingletonPtr())
  206.     {
  207.         // create scene root with no config file and plugin
  208.         //m_pRoot = new Root("");
  209.         m_pRoot = new Ogre::Root(GetAppDirectory() +  "plugins.cfg",
  210.             GetAppDirectory() + "ogre.cfg",
  211.             GetAppDirectory() + "Ogrelog.cfg");
  213.         // Load plugin
  214.         //FALSE_RETURN( LoadPlugin(), false );
  216.         // Select Render System
  217.         FALSE_RETURN(SelectRenderSystem(), false);
  219.         m_pRoot->initialise(false);
  221.         // Load Resource
  222.         FALSE_RETURN(LoadResource(), false);
  223.     }      
  224.     else
  225.     {
  226.         m_pRoot = Ogre::Root::getSingletonPtr();
  227.     }  
  229.     // Create Render Window
  230.     FALSE_RETURN(CreateRenderWindow(), false);
  232.     // Create Scene Manager
  233.     FALSE_RETURN(CreateSceneManager(), false);
  235.     // Create Default Camera and Viewport
  236.     FALSE_RETURN(CreateDefaultCamera(), false);
  238.     Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
  240.     // Create Scene
  241.     FALSE_RETURN(CreateScene(), false);
  243.     CreateLight();
  245.     startTimer(2);
  246.     return false;
  247. }  
  250. // Select Render System
  251. bool FOgreWidget::SelectRenderSystem()
  252. {
  253.     m_pRoot->restoreConfig();
  255. //     if(m_pRoot->showConfigDialog())
  256. //         return true;
  257. //     else
  258. //         exit(0);
  259.     return true;
  260. }
  263. bool FOgreWidget::CreateScene()
  264. {
  265.     Ogre::MaterialPtr r
  266.         = Ogre::MaterialManager::getSingleton().create("r",
  267.         Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
  269.     r->setReceiveShadows(false);
  270.     r->getTechnique(0)->setLightingEnabled(true);
  271.     Ogre::Pass* rPass = r->getTechnique(0)->getPass(0);
  272.     rPass->setAmbient(1.0, 1.0, 1.0);
  273.     rPass->setDiffuse(1.0, 0.0, 0.0, 1.0);    // 如果需要透明则将alpha值设置成小于1.0即可
  274.     rPass->setSpecular(1.0, 0.0, 0.0, 1.0);
  275.     m_pSceneManager->setSkyBox(true, "Examples/StormySkyBox");  // add a skybox
  276. //     string strName;
  277. //     strName = m_strInsName_.toStdString();
  278. //     strName += ".mesh";
  279. //    m_pMainEnt = m_pSceneManager->createEntity("root_mesh", "a1.mesh");
  280. //    m_pMainEnt = m_pSceneManager->createEntity("root_mesh", "Object03.mesh");
  281. //     m_pMainNode = m_pSceneManager->getRootSceneNode()->createChildSceneNode();
  282. //     Ogre::MaterialPtr a1
  283. //         = Ogre::MaterialManager::getSingleton().load("a1.material",
  284. //         Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
  285. //     //m_pMainEnt->setMaterial(a1);
  286. //     m_pMainNode->attachObject(m_pMainEnt);
  287. //
  288. //     Ogre::Entity* ent = m_pSceneManager->createEntity("Plane", Ogre::SceneManager::PT_PLANE);
  289. //     ent->setMaterialName("Examples/Frost");
  290. //     Ogre::SceneNode* node = m_pSceneManager->getRootSceneNode()->createChildSceneNode();
  291. //     node->setPosition(0, 0, 50);
  292. //     node->attachObject(ent);
  293. //     DWORD vColor = 0;
  294. //     SetModeColor(vColor);
  295.     return true;
  296. }
  298. void FOgreWidget::updateDraw()
  299. {
  300.     if(m_pRenderWindow != NULL)
  301.     {
  302.         //printf("I'm %s/n",m_strInsName_.toStdString().c_str());
  303.         m_pRoot->_fireFrameStarted();
  304.         m_pRenderWindow->update();
  306. //         m_pDefCamera->yaw(Ogre::Radian(angleX));
  307. //         m_pDefCamera->pitch(Ogre::Radian(angleY));
  309.         m_pRoot->_fireFrameEnded();
  310.     }
  311. }
  313. void FOgreWidget::CreateLight()
  314. {
  315.     m_pSceneManager->setAmbientLight(Ogre::ColourValue(0.5, 0.5, 0.5));
  316.     m_pMainLight = m_pSceneManager->createLight("mainLight");
  317.     m_pMainLight->setPosition(20, 80, 50);
  318. }
  320. void FOgreWidget::SetModeColor(DWORD vColor)
  321. {
  322.     if(m_pMainEnt)
  323.     {
  324.         Ogre::MeshPtr  tpMesh = m_pMainEnt->getMesh();
  325.         tpMesh->setVertexBufferPolicy(Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY,true);
  326.         //遍历对应的模型
  327.         int  tSubEngityNum = tpMesh->getNumSubMeshes();
  328.         for(int S = 0 ; S < tSubEngityNum ; S++)
  329.         {
  330.             //
  331.             Ogre::SubMesh* tpSubMesh = tpMesh->getSubMesh(S);
  333.             //锁定顶点缓冲区
  334.             Ogre::VertexData* tVertexData = tpSubMesh->vertexData;
  335.             //色彩
  336.         //    size_t tSize3 = 0;
  337.         //    size_t  tOffSet3 = 0;
  338.             const Ogre::VertexElement* posElem3 =
  339.                 tVertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_DIFFUSE);
  340.             
  341.             Ogre::VertexDeclaration::VertexElementList lst
  342.                 = tVertexData->vertexDeclaration->getElements();
  343.             
  344.             for (Ogre::VertexDeclaration::VertexElementList::iterator it = lst.begin();
  345.                 it != lst.end(); it++)
  346.             {
  347.                 Ogre::VertexElement& el = (*it);
  348.                 if (el.getType() == Ogre::VET_COLOUR_ARGB)
  349.                 {
  350.                     Ogre::HardwareVertexBufferSharedPtr dstHVBPos = tVertexData->vertexBufferBinding->getBuffer(posElem3->getSource());
  351.                     size_t SizeInBytes  = dstHVBPos->getSizeInBytes();
  352.                     size_t numVertices  = dstHVBPos->getNumVertices();
  353.                     size_t SizeVertices = dstHVBPos->getVertexSize();
  354.                     size_t VerticesCount= tVertexData->vertexCount;
  355.                     unsigned char* pVert = static_cast<unsigned char*>(dstHVBPos->lock(0,
  356.                         SizeInBytes ,
  357.                         Ogre::HardwareBuffer::HBL_NORMAL));
  358.                     float *dstDataPos ;
  359.                     //遍历所有顶点
  360.                     for(int i = 0 ; i < VerticesCount ; i++,  pVert += SizeVertices )
  361.                     {
  362.                         posElem3->baseVertexPointerToElement(pVert,&dstDataPos);
  364.                         Ogre::RGBA tColor  = dstDataPos[0];
  366.                         //为了验证色彩，我先取得一下查看
  367.                         BYTE tRed = tColor >>24;
  368.                         BYTE tGreen = (tColor >>16)&0xff;
  369.                         BYTE tBlue = (tColor >>8)&0xff;
  370.                         BYTE tAlpha  = tColor &0xff;
  372.                         DWORD tRed2 = 0;
  373.                         DWORD tGreen2 = 255;
  374.                         DWORD tBlue2 = 0;
  375.                         DWORD tAlpha2 = 0;
  376.                         DWORD tColor2 =(tRed2 << 24)|(tGreen2 << 16)|(tBlue2 << 8)|tAlpha2 ;
  379.                         dstDataPos[0] = tColor2;
  381.                     }
  383.                     dstHVBPos->unlock();
  385.                     break;
  386.                 }
  387.             }
  388.             if(posElem3)
  389.             {
  390.             //    tSize3 = posElem3->getSize();
  391.             //    tOffSet3 = posElem3->getOffset();
  392.             }
  393.             else
  394.             {
  395.                 //::MessageBox(NULL,"没有顶点色","提示",MB_OK);
  396.                 return;
  397.             }
  399.             Ogre::HardwareVertexBufferSharedPtr dstHVBPos = tVertexData->vertexBufferBinding->getBuffer(posElem3->getSource());
  400.             size_t SizeInBytes  = dstHVBPos->getSizeInBytes();
  401.             size_t numVertices  = dstHVBPos->getNumVertices();
  402.             size_t SizeVertices = dstHVBPos->getVertexSize();
  403.             size_t VerticesCount= tVertexData->vertexCount;
  404.             unsigned char* pVert = static_cast<unsigned char*>(dstHVBPos->lock(0, SizeInBytes ,
  405.                 Ogre::HardwareBuffer::HBL_NORMAL));
  406.             float *dstDataPos ;
  407.             //遍历所有顶点
  408.             for(int i = 0 ; i < VerticesCount ; i++,  pVert += SizeVertices )
  409.             {
  410.                 posElem3->baseVertexPointerToElement(pVert,&dstDataPos);
  412.                 Ogre::RGBA tColor  = dstDataPos[0];
  414.                 //为了验证色彩，我先取得一下查看
  415.                 BYTE tRed = tColor >>24;
  416.                 BYTE tGreen = (tColor >>16)&0xff;
  417.                 BYTE tBlue = (tColor >>8)&0xff;
  418.                 BYTE tAlpha  = tColor &0xff;
  420.                 DWORD tRed2 = 0;
  421.                 DWORD tGreen2 = 255;
  422.                 DWORD tBlue2 = 0;
  423.                 DWORD tAlpha2 = 255;
  424.                 DWORD tColor2 =(tRed2 << 24)|(tGreen2 << 16)|(tBlue2 << 8)|tAlpha2 ;
  427.                 dstDataPos[0] = tColor2;
  429.             }
  431.             dstHVBPos->unlock();
  432.         }
  433.     
  434.     }
  435. }


main中的代码
复制代码
  1. QApplication a(argc, argv);
  2.     a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
  4.     QSize qSize = QApplication::desktop()->availableGeometry().size();
  5.     qSize.setHeight(qSize.height() - QT_TITLE_BAR_HEIGHT);
  6.     
  7.     QMainWindow mainwindow;
  8.     QGridLayout layout;
  9.     FOgreWidget ogrewidget(&mainwindow);
  10.     ogrewidget.Initialize();
  11.     layout.addWidget(&ogrewidget, 0, 0, 1, 1);
  12.     mainwindow.setLayout(&layout);
  13.     mainwindow.show();

运行时，FOgreWidget无法响应到mousePressEvent和KeyPressEvent，希望能获得您的帮助，谢谢
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离线jdwx
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只看该作者 1楼 发表于: 2012-03-12
void FOgreWidget::mousePressEvent(QMouseEvent* evt)
{
    QWidget::mousePressEvent(evt);
}
上面的是mousePressEvent，如此 写法等于没有写任何代码。
还有怎么看都有MFC的影子。
发帖时要说明：操作系统、Qt版本、编译器，这样能更快的得到回复。
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离线louisir
新手上路
只看该作者 2楼 发表于: 2012-03-12
引用第1楼jdwx于2012-03-12 10:31发表的  :
void FOgreWidget::mousePressEvent(QMouseEvent* evt)
{
    QWidget::mousePressEvent(evt);
}
上面的是mousePressEvent，如此 写法等于没有写任何代码。
.......


应该如何做呢？
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离线张羽
新手上路
只看该作者 3楼 发表于: 2012-04-26
在此类的构造函数里调用
setMouseTracking(true);
使鼠标消息生效.
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