EventQtSlotConnect
VTKExamples/Cxx/Qt/EventQtSlotConnect
Code¶
EventQtSlotConnect.cxx
#include "EventQtSlotConnect.h" #include "vtkGenericOpenGLRenderWindow.h" #include <vtkEventQtSlotConnect.h> #include <vtkInteractorStyleTrackballActor.h> #include <vtkNamedColors.h> #include <vtkNew.h> #include <vtkPolyDataMapper.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkSphereSource.h> // Constructor EventQtSlotConnect::EventQtSlotConnect() { this->setupUi(this); vtkNew<vtkNamedColors> colors; vtkNew<vtkGenericOpenGLRenderWindow> renderWindow; this->qvtkWidget->SetRenderWindow(renderWindow); vtkNew<vtkEventQtSlotConnect> slotConnector; this->Connections = slotConnector; // Sphere vtkNew<vtkSphereSource> sphereSource; sphereSource->Update(); vtkNew<vtkPolyDataMapper> sphereMapper; sphereMapper->SetInputConnection(sphereSource->GetOutputPort()); vtkNew<vtkActor> sphereActor; sphereActor->SetMapper(sphereMapper); sphereActor->GetProperty()->SetColor(colors->GetColor4d("Tomato").GetData()); // VTK Renderer vtkNew<vtkRenderer> renderer; renderer->AddActor(sphereActor); renderer->SetBackground(colors->GetColor3d("SteelBlue").GetData()); this->qvtkWidget->GetRenderWindow()->AddRenderer(renderer); this->Connections->Connect( this->qvtkWidget->GetRenderWindow()->GetInteractor(), vtkCommand::LeftButtonPressEvent, this, SLOT(slot_clicked(vtkObject *, unsigned long, void *, void *))); }; void EventQtSlotConnect::slot_clicked(vtkObject *, unsigned long, void *, void *) { std::cout << "Clicked." << std::endl; }
EventQtSlotConnectDriver.cxx
#include <QApplication> #include <QSurfaceFormat> #include "EventQtSlotConnect.h" int main(int argc, char** argv) { // needed to ensure appropriate OpenGL context is created for VTK rendering. QSurfaceFormat::setDefaultFormat(QVTKOpenGLNativeWidget::defaultFormat()); QApplication app(argc, argv); EventQtSlotConnect eventQtSlotConnect; eventQtSlotConnect.show(); return app.exec(); }
EventQtSlotConnect.h
#ifndef EventQtSlotConnect_H #define EventQtSlotConnect_H #include "ui_EventQtSlotConnect.h" #include <QMainWindow> #include <vtkSmartPointer.h> #include <vtkObject.h> class vtkEventQtSlotConnect; class EventQtSlotConnect : public QMainWindow, private Ui::EventQtSlotConnect { Q_OBJECT public: EventQtSlotConnect(); public slots: void slot_clicked(vtkObject*, unsigned long, void*, void*); private: vtkSmartPointer<vtkEventQtSlotConnect> Connections; }; #endif
EventQtSlotConnect.ui
<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>EventQtSlotConnect</class> <widget class="QMainWindow" name="EventQtSlotConnect"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>561</width> <height>575</height> </rect> </property> <property name="windowTitle"> <string>EventQtSlotConnect</string> </property> <widget class="QWidget" name="centralwidget"> <layout class="QHBoxLayout" name="horizontalLayout"> <item> <widget class="QVTKOpenGLNativeWidget" name="qvtkWidget"> <property name="sizePolicy"> <sizepolicy hsizetype="Expanding" vsizetype="MinimumExpanding"> <horstretch>0</horstretch> <verstretch>0</verstretch> </sizepolicy> </property> </widget> </item> </layout> </widget> <action name="actionOpenFile"> <property name="enabled"> <bool>true</bool> </property> <property name="text"> <string>Open File...</string> </property> </action> <action name="actionExit"> <property name="text"> <string>Exit</string> </property> </action> <action name="actionPrint"> <property name="text"> <string>Print</string> </property> </action> <action name="actionHelp"> <property name="text"> <string>Help</string> </property> </action> <action name="actionSave"> <property name="text"> <string>Save</string> </property> </action> </widget> <customwidgets> <customwidget> <class>QVTKOpenGLNativeWidget</class> <extends>QWidget</extends> <header>QVTKOpenGLNativeWidget.h</header> </customwidget> </customwidgets> <resources/> <connections/> </ui>
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) if(POLICY CMP0020) cmake_policy(SET CMP0020 NEW) cmake_policy(SET CMP0071 NEW) endif() PROJECT(EventQtSlotConnect) find_package(VTK COMPONENTS vtkCommonColor vtkCommonCore vtkFiltersSources vtkGUISupportQt vtkInteractionStyle vtkRenderingContextOpenGL2 vtkRenderingCore vtkRenderingFreeType vtkRenderingGL2PSOpenGL2 vtkRenderingOpenGL2 QUIET ) if (NOT VTK_FOUND) message("Skipping EventQtSlotConnect: ${VTK_NOT_FOUND_MESSAGE}") return () endif() message (STATUS "VTK_VERSION: ${VTK_VERSION}") if(vtkGUISupportQt_LOADED OR TARGET VTK::GUISupportQt) if (VTK_VERSION VERSION_LESS "8.90.0") # Instruct CMake to run moc automatically when needed. set(CMAKE_AUTOMOC ON) else() # Instruct CMake to run moc automatically when needed. set(CMAKE_AUTOMOC ON) set(CMAKE_AUTOUIC ON) endif() # We have ui files, this will bring in the macro: qt5_wrap_ui find_package(Qt5Widgets REQUIRED QUIET) else() message(STATUS "GuiSupportQt not found.") return() endif() include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}) file(GLOB UI_FILES *.ui) file(GLOB QT_WRAP *.h) file(GLOB CXX_FILES *.cxx) qt5_wrap_ui(UISrcs ${UI_FILES}) if (VTK_VERSION VERSION_LESS "8.90.0") # old system include(${VTK_USE_FILE}) # CMAKE_AUTOMOC in ON so the MOC headers will be automatically wrapped. add_executable(EventQtSlotConnect MACOSX_BUNDLE ${CXX_FILES} ${UISrcs} ${QT_WRAP}) qt5_use_modules(EventQtSlotConnect Core Gui) target_link_libraries(EventQtSlotConnect ${VTK_LIBRARIES}) else() # CMAKE_AUTOMOC in ON so the MOC headers will be automatically wrapped. add_executable(EventQtSlotConnect MACOSX_BUNDLE ${CXX_FILES} ${UISrcs} ${QT_WRAP}) qt5_use_modules(EventQtSlotConnect Core Gui) target_link_libraries(EventQtSlotConnect ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS EventQtSlotConnect MODULES ${VTK_LIBRARIES} ) endif()
Download and Build EventQtSlotConnect¶
Click here to download EventQtSlotConnect and its CMakeLists.txt file. Once the tarball EventQtSlotConnect.tar has been downloaded and extracted,
cd EventQtSlotConnect/build
This example requires Qt and VTK.
If VTK and Qt are installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
If Qt is not found on your system, you will need to tell CMake where to find qmake:
cmake -DQT_QMAKE_EXECUTABLE:FILEPATH=/usr/something/qmake ..
Build the project:
make
and run it:
./EventQtSlotConnect
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time. You may also need to add a Qt related path.