Build RViz plugin from .ui file

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My existing solution simply designs the GUI in qtcreator and then use the uic to generate the dotnect_window.h (link to plugin) which I might have to modify to derive from class ... : public rviz::Panel. How to automate this / do it all?

For example rqt_image_view already uses an .ui file, but it is rqt standalone. So I started with the RViz plugin teleop and added code from rqt_image_view . Maybe I could use the uncommented qt4/5_wrap_ui as a start? Just to give an idea:

cmake_minimum_required(VERSION 2.8.3)
project(rviz_dotnect_plugin)

# ros packages
find_package(catkin REQUIRED COMPONENTS
  rviz
)

catkin_package(
   # INCLUDE_DIRS
   # LIBRARIES ${PROJECT_NAME}
   CATKIN_DEPENDS rviz
   # DEPENDS
)
include_directories(
  ${catkin_INCLUDE_DIRS}
  include
)

link_directories(
  ${catkin_LIBRARY_DIRS}
)

# Bundle headers .h
set(HEADER_FILES
  include/drive_widget.h
  include/teleop_panel.h
)

# Automatically enable Qt's Meta-Object Compiler moc generation
set(CMAKE_AUTOMOC ON)

# Avoid keyword definition to avaid conflicts with boost or xapian etc
# e.g. http://muddyazian.blogspot.de/2012/04/getting-qt-app-working-with-boost-using.html
add_definitions(-DQT_NO_KEYWORDS)

# Use same QT version as rviz and specify headers run through MOC.
# MOC generated .cpp files are included automatically as headers.
if(rviz_QT_VERSION VERSION_LESS "5")
  message(STATUS "Using Qt4 based on the rviz_QT_VERSION: ${rviz_QT_VERSION}")
  find_package(Qt4 ${rviz_QT_VERSION} EXACT REQUIRED QtCore QtGui)
  include(${QT_USE_FILE})
  qt4_wrap_cpp(HEADER_FILES_MOCS ${HEADER_FILES})
  #qt4_wrap_ui(rqt_image_view_UIS_H ${rqt_image_view_UIS})
else()
  message(STATUS "Using Qt5 based on the rviz_QT_VERSION: ${rviz_QT_VERSION}")
  find_package(Qt5 ${rviz_QT_VERSION} EXACT REQUIRED Core Widgets)
  set(QT_LIBRARIES Qt5::Widgets)
  qt5_wrap_cpp(HEADER_FILES_MOCS ${HEADER_FILES})
  #qt5_wrap_ui(rqt_image_view_UIS_H ${rqt_image_view_UIS})
endif()

# Bundle source .cpp including the mocs
set(SOURCE_FILES
src/drive_widget.cpp
src/teleop_panel.cpp
${HEADER_FILES_MOCS}
)

# A rviz plugin is a shared library named ${PROJECT_NAME}.so
add_library(${PROJECT_NAME} ${SOURCE_FILES})

# Link executable with Qt libraries
target_link_libraries(${PROJECT_NAME}
  ${QT_LIBRARIES}
  ${catkin_LIBRARIES}
)

## Install rules...

I went on and generated the header from .ui via $ uic -o dotnect_window.h dotnect_window.ui. But uic deprecated the -i arg to generate the implementation file via uic -i PizzaEntry.h -o PizzaEntry.cpp pizza.ui. Argl.

Also the third step is nowhere to be found inside rqt_image_view.
I get confused with what is a rqt standalone and what I actually need to just get the rviz plugin asrviz::Panel building from .ui.