#----------------------------------------------

# 下面这两行，没什么好解释的

cmake_minimum_required( VERSION 2.8 )

project( YourProjectName )

#----------------------------------------------

# 下面这两行，也没什么好解释的

find_package( Qt4 REQUIRED )

include( ${QT_USE_FILE} )

#----------------------------------------------

# 程序所有源文件。<TODO:在此处添加源文件>

# 定义变量Project_SRCS，其值为所列的文件列表

SET( Project_SRCS

    main.cpp

  )

#----------------------------------------------

# 程序所有UI文件。<TODO:在此处添加UI文件>

# 定义变量Project_UIS，其值为所列的文件列表

SET( Project_UIS

    YourQtWindows.ui

)

#----------------------------------------------

# 所有包含Q_OBJECT的头文件。<TODO:在此处添加头文件>

# 定义变量Project_MOC_HDRS，其值为所列的文件列表

SET( Project_MOC_HDRS

    YourQtProjectFiles.h

)

#-----------------------------------------------

# 通过Qt的uic.exe生成UI文件对应的ui_XXXX.h文件

# 将生成的ui_XXXX.h文件放在变量Project_UIS_H里，

# QT4_WRAP_UI就是干这个事情。

QT4_WRAP_UI( Project_UIS_H ${Project_UIS} )

#-----------------------------------------------

# 通过Qt的moc.exe生成包含Q_OBJECT的头文件对应的

# moc_XXXX.cxx文件，将生成的moc_XXXX.cxx文件放在

# 变量Project_MOC_SRCS里。QT4_WRAP_CPP就是干这个事情。

QT4_WRAP_CPP( Project_MOC_SRCS ${Project_MOC_HDRS} )

#-----------------------------------------------

# Qt的MOC和UIC程序生成的moc_XXXX.cxx和ui_XXXX.h

# 等文件是存放在CMake的“Where to build the binaries"

# 里指定的目录里，所以必须都这些路径包含进来。

INCLUDE_DIRECTORIES( ${Project_SOURCE_DIR}

                     ${CMAKE_CURRENT_BINARY_DIR}

                   )

#-----------------------------------------------                          

# Qt程序如果有资源文件(*.qrc)，要包含资源文件，

# 然后用Qt的rcc.exe生成相应的qrc_XXXX.cpp文件。

# QT4_ADD_RESOURCES就是干这个事情。

SET( Project_RCCS YourProject.qrc)

QT4_ADD_RESOURCES( Project_RCC_SRCS ${Project_RCCS})

#-----------------------------------------------

# 根据程序的cpp文件、头文件以及中间生成的ui_XXXX.h、

# moc_XXXX.cxx、qrc_XXXX.cxx等生成可执行文件，并链接

# Qt的动态库(Qt的动态库都定义在QT_LIBRARIES变量里了)

ADD_EXECUTABLE( YourProjectName

                ${Project_SRCS}

                ${Project_UIS_H}

                ${Project_MOC_SRCS}

                ${Project_RCC_SRCS}                           

              )

TARGET_LINK_LIBRARIES ( YourProjectName ${QT_LIBRARIES} )

#----------------------------------------------------------------------------------

cmake_minimum_required( VERSION 2.8 )

project( CombineQtAndVTK )

#----------------------------------------------------------------------------------

find_package( VTK REQUIRED )

find_package( Qt4 REQUIRED )

include( ${VTK_USE_FILE} )

include( ${QT_USE_FILE} )

#----------------------------------------------------------------------------------

SET( PROJECT_SRCS

    main.cpp

    ProjectMainWindow.cpp

    )

SET( PROJECT_UIS

    ProjectMainWindow.ui

)

SET( PROJECT_MOC_HDRS

  ProjectMainWindow.h

)

#----------------------------------------------------------------------------------

QT4_WRAP_UI( PROJECT_UIS_H

             ${PROJECT_UIS}

           )

QT4_WRAP_CPP( PROJECT_MOC_SRCS

              ${PROJECT_MOC_HDRS}

            )

#----------------------------------------------------------------------------------

INCLUDE_DIRECTORIES( ${PROJECT_SOURCE_DIR}

                     ${CMAKE_CURRENT_BINARY_DIR}

                     ${VTK_DIR}

                   )

ADD_EXECUTABLE( CombineQtAndVTK

                ${PROJECT_SRCS}

                ${PROJECT_UIS_H}

                ${PROJECT_MOC_SRCS}

              )

TARGET_LINK_LIBRARIES ( CombineQtAndVTK

  ${VTK_LIBRARIES}

  QVTK

  )

#-----------------------------------------------------------------------------------

# Construct a list of paths containing runtime directories for project applications on Windows

set(PROJECT_RUNTIME_PATH  "${VTK_LIBRARY_DIRS}/@VS_BUILD_TYPE@;

${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/@VS_BUILD_TYPE@"

    )

if(QT4_FOUND)

  set(PROJECT_RUNTIME_PATH "${PROJECT_RUNTIME_PATH};${QT_LIBRARY_DIR}/../bin")

endif()

include(CreateWindowsBatchScript.cmake)

# If we are under Windows, create two batch files which correctly

# set up the environment for the application and for Visual Studio

if(WIN32)

  set(VS_SOLUTION_FILE "${PROJECT_BINARY_DIR}/${PROJECT_NAME}.sln")

  foreach(VS_BUILD_TYPE debug release)

    CreateWindowsBatchScript("${CMAKE_SOURCE_DIR}/StartVS.bat.in"

#ifndef Project_MainWindow_H

#define Project_MainWindow_H

#include <QMainWindow>

#include "ui_ProjectMainWindow.h"

#include <vtkSmartPointer.h>

class vtkImageViewer2;

class vtkRenderer;

class ProjectMainWindow : public QMainWindow, public Ui::ProjectMainWindow

{

       Q_OBJECT

public:

       ProjectMainWindow();

       ~ProjectMainWindow();

private slots:

       //响应打开图像文件的槽函数

       void onOpenSlot();

private:

       vtkSmartPointer< vtkImageViewer2 > m_pImageViewer;

       vtkSmartPointer< vtkRenderer > m_pRenderder;

};

#endif

#include "ProjectMainWindow.h"

#include <QFileDialog>

#include <QDir>

#include <vtkRenderWindow.h>

#include <vtkRenderer.h>

#include <vtkImageViewer2.h>

#include <QVTKWidget.h>

#include <vtkJPEGReader.h>

#include <vtkImageActor.h>

ProjectMainWindow::ProjectMainWindow()

{

       setupUi(this);

       m_pImageViewer  = vtkSmartPointer< vtkImageViewer2 >::New();

       m_pRenderder      = vtkSmartPointer< vtkRenderer >::New();

       // 设置m_QVTKWidget的渲染器

       m_QVTKWidget->GetRenderWindow()->AddRenderer(m_pRenderder);

       //连接打开的信号与相应的槽

       connect( m_OpenAction, SIGNAL( triggered() ), this, SLOT( onOpenSlot() ) );

}

ProjectMainWindow::~ProjectMainWindow()

{

}

void ProjectMainWindow::onOpenSlot()

{

       QString filter;

       filter = "JPEG p_w_picpath file (*.jpg *.jpeg)";

       QDir dir;

       QString fileName = QFileDialog::getOpenFileName( this, 

                                 QString(tr("打开图像")), dir.absolutePath() , filter );

       if ( fileName.isEmpty() == true ) return;

       // 支持带中文路径的读取

       QByteArray ba = fileName.toLocal8Bit();

       const char *fileName_str = ba.data();

       // 用vtkJPEGReader读取JPG图像

       vtkSmartPointer<vtkJPEGReader> reader = vtkSmartPointer<vtkJPEGReader>::New();

       reader->SetFileName(fileName_str);

       // 将reader的输出作为m_pImageViewer的输入，并设置m_pImageViewer与渲染器m_pRenderer的关联

       m_pImageViewer->SetInput(reader->GetOutput());

       m_pImageViewer->UpdateDisplayExtent();

       m_pImageViewer->SetRenderWindow(m_QVTKWidget->GetRenderWindow());

       m_pImageViewer->SetRenderer(m_pRenderder);

       m_pImageViewer->SetupInteractor(m_QVTKWidget->GetRenderWindow()->GetInteractor());

       m_pImageViewer->SetSliceOrientationToXY(); //默认就是这个方向的

       m_pImageViewer->GetImageActor()->InterpolateOff();

       m_pRenderder->ResetCamera();

       m_pRenderder->DrawOn();

       m_QVTKWidget->GetRenderWindow()->Render();

}

private slots:

       //响应鼠标移动的消息，实时输出鼠标的当前位置

       void updateCoords(vtkObject* obj);

private:

       vtkEventQtSlotConnect* m_Connections;

//构造函数里：

       m_Connections = vtkEventQtSlotConnect::New();

       m_Connections->Connect(m_QVTKWidget->GetRenderWindow()->GetInteractor(),

              vtkCommand::MouseMoveEvent,

              this,

              SLOT(updateCoords(vtkObject*)));

//槽函数的实现

void ProjectMainWindow::updateCoords(vtkObject* obj)

{

       // 获取交互器

       vtkRenderWindowInteractor* iren = vtkRenderWindowInteractor::SafeDownCast(obj);

       // 获取鼠标的当前位置

       int event_pos[2];

       iren->GetEventPosition(event_pos);

       QString str;

       str.sprintf("x=%d : y=%d", event_pos[0], event_pos[1]);

       m_StatusBar->showMessage(str);

}