text: /*M///////////////////////////////////////////////////////////////////////////////////////
  //
  //  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
  //
  //  By downloading, copying, installing or using the software you agree to this license.
  //  If you do not agree to this license, do not download, install,
  //  copy or use the software.
  //
  //
  //                        Intel License Agreement
  //                For Open Source Computer Vision Library
  //
  // Copyright (C) 2000, Intel Corporation, all rights reserved.
  // Third party copyrights are property of their respective owners.
  //
  // Redistribution and use in source and binary forms, with or without modification,
  // are permitted provided that the following conditions are met:
  //
  //   * Redistribution's of source code must retain the above copyright notice,
  //     this list of conditions and the following disclaimer.
  //
  //   * Redistribution's in binary form must reproduce the above copyright notice,
  //     this list of conditions and the following disclaimer in the documentation
  //     and/or other materials provided with the distribution.
  //
  //   * The name of Intel Corporation may not be used to endorse or promote products
  //     derived from this software without specific prior written permission.
  //
  // This software is provided by the copyright holders and contributors "as is" and
  // any express or implied warranties, including, but not limited to, the implied
  // warranties of merchantability and fitness for a particular purpose are disclaimed.
  // In no event shall the Intel Corporation or contributors be liable for any direct,
  // indirect, incidental, special, exemplary, or consequential damages
  // (including, but not limited to, procurement of substitute goods or services;
  // loss of use, data, or profits; or business interruption) however caused
  // and on any theory of liability, whether in contract, strict liability,
  // or tort (including negligence or otherwise) arising in any way out of
  // the use of this software, even if advised of the possibility of such damage.
  //
  //M*/
  
  #include "precomp.hpp"
  #include <map>
  #include "opencv2/core/opengl.hpp"
  
  // in later times, use this file as a dispatcher to implementations like cvcap.cpp
  
  CV_IMPL void cvSetWindowProperty(const char* name, int prop_id, double prop_value)
  {
      switch(prop_id)
      {
      //change between fullscreen or not.
      case CV_WND_PROP_FULLSCREEN:
  
          if (!name || (prop_value!=CV_WINDOW_NORMAL && prop_value!=CV_WINDOW_FULLSCREEN))//bad argument
              break;
  
          #if defined (HAVE_QT)
              cvSetModeWindow_QT(name,prop_value);
          #elif defined(HAVE_WIN32UI)
              cvSetModeWindow_W32(name,prop_value);
          #elif defined (HAVE_GTK)
              cvSetModeWindow_GTK(name,prop_value);
          #elif defined (HAVE_CARBON)
              cvSetModeWindow_CARBON(name,prop_value);
          #elif defined (HAVE_COCOA)
              cvSetModeWindow_COCOA(name,prop_value);
          #elif defined (WINRT)
              cvSetModeWindow_WinRT(name, prop_value);
          #endif
  
      break;
  
      case CV_WND_PROP_AUTOSIZE:
          #if defined (HAVE_QT)
              cvSetPropWindow_QT(name,prop_value);
          #endif
      break;
  
      case CV_WND_PROP_ASPECTRATIO:
          #if defined (HAVE_QT)
              cvSetRatioWindow_QT(name,prop_value);
          #endif
      break;
  
      default:;
      }
  }
  
  /* return -1 if error */
  CV_IMPL double cvGetWindowProperty(const char* name, int prop_id)
  {
      if (!name)
          return -1;
  
      switch(prop_id)
      {
      case CV_WND_PROP_FULLSCREEN:
  
          #if defined (HAVE_QT)
              return cvGetModeWindow_QT(name);
          #elif defined(HAVE_WIN32UI)
              return cvGetModeWindow_W32(name);
          #elif defined (HAVE_GTK)
              return cvGetModeWindow_GTK(name);
          #elif defined (HAVE_CARBON)
              return cvGetModeWindow_CARBON(name);
          #elif defined (HAVE_COCOA)
              return cvGetModeWindow_COCOA(name);
          #elif defined (WINRT)
              return cvGetModeWindow_WinRT(name);
          #else
              return -1;
          #endif
      break;
  
      case CV_WND_PROP_AUTOSIZE:
  
          #if defined (HAVE_QT)
              return cvGetPropWindow_QT(name);
          #elif defined(HAVE_WIN32UI)
              return cvGetPropWindowAutoSize_W32(name);
          #elif defined (HAVE_GTK)
              return cvGetPropWindowAutoSize_GTK(name);
          #else
              return -1;
          #endif
      break;
  
      case CV_WND_PROP_ASPECTRATIO:
  
          #if defined (HAVE_QT)
              return cvGetRatioWindow_QT(name);
          #elif defined(HAVE_WIN32UI)
              return cvGetRatioWindow_W32(name);
          #elif defined (HAVE_GTK)
              return cvGetRatioWindow_GTK(name);
          #else
              return -1;
          #endif
      break;
  
      case CV_WND_PROP_OPENGL:
  
          #if defined (HAVE_QT)
              return cvGetOpenGlProp_QT(name);
          #elif defined(HAVE_WIN32UI)
              return cvGetOpenGlProp_W32(name);
          #elif defined (HAVE_GTK)
              return cvGetOpenGlProp_GTK(name);
          #else
              return -1;
          #endif
      break;
  
      case CV_WND_PROP_VISIBLE:
          #if defined (HAVE_QT)
              return cvGetPropVisible_QT(name);
          #else
              return -1;
          #endif
      break;
  
      default:
          return -1;
      }
  }
  
  void cv::namedWindow( const String& winname, int flags )
  {
      cvNamedWindow( winname.c_str(), flags );
  }
  
  void cv::destroyWindow( const String& winname )
  {
      cvDestroyWindow( winname.c_str() );
  }
  
  void cv::destroyAllWindows()
  {
      cvDestroyAllWindows();
  }
  
  void cv::resizeWindow( const String& winname, int width, int height )
  {
      cvResizeWindow( winname.c_str(), width, height );
  }
  
  void cv::moveWindow( const String& winname, int x, int y )
  {
      cvMoveWindow( winname.c_str(), x, y );
  }
  
  void cv::setWindowProperty(const String& winname, int prop_id, double prop_value)
  {
      cvSetWindowProperty( winname.c_str(), prop_id, prop_value);
  }
  
  double cv::getWindowProperty(const String& winname, int prop_id)
  {
      return cvGetWindowProperty(winname.c_str(), prop_id);
  }
  
  int cv::waitKeyEx(int delay)
  {
      return cvWaitKey(delay);
  }
  
  int cv::waitKey(int delay)
  {
      int code = waitKeyEx(delay);
  #ifndef HAVE_WINRT
      static int use_legacy = -1;
      if (use_legacy < 0)
      {
          use_legacy = getenv("OPENCV_LEGACY_WAITKEY") != NULL ? 1 : 0;
      }
      if (use_legacy > 0)
          return code;
  #endif
      return code & 0xff;
  }
  
  int cv::createTrackbar(const String& trackbarName, const String& winName,
                     int* value, int count, TrackbarCallback callback,
                     void* userdata)
  {
      return cvCreateTrackbar2(trackbarName.c_str(), winName.c_str(),
                               value, count, callback, userdata);
  }
  
  void cv::setTrackbarPos( const String& trackbarName, const String& winName, int value )
  {
      cvSetTrackbarPos(trackbarName.c_str(), winName.c_str(), value );
  }
  
  void cv::setTrackbarMax(const String& trackbarName, const String& winName, int maxval)
  {
      cvSetTrackbarMax(trackbarName.c_str(), winName.c_str(), maxval);
  }
  
  void cv::setTrackbarMin(const String& trackbarName, const String& winName, int minval)
  {
      cvSetTrackbarMin(trackbarName.c_str(), winName.c_str(), minval);
  }
  
  int cv::getTrackbarPos( const String& trackbarName, const String& winName )
  {
      return cvGetTrackbarPos(trackbarName.c_str(), winName.c_str());
  }
  
  void cv::setMouseCallback( const String& windowName, MouseCallback onMouse, void* param)
  {
      cvSetMouseCallback(windowName.c_str(), onMouse, param);
  }
  
  int cv::getMouseWheelDelta( int flags )
  {
      return CV_GET_WHEEL_DELTA(flags);
  }
  
  int cv::startWindowThread()
  {
      return cvStartWindowThread();
  }
  
  // OpenGL support
  
  void cv::setOpenGlDrawCallback(const String& name, OpenGlDrawCallback callback, void* userdata)
  {
      cvSetOpenGlDrawCallback(name.c_str(), callback, userdata);
  }
  
  void cv::setOpenGlContext(const String& windowName)
  {
      cvSetOpenGlContext(windowName.c_str());
  }
  
  void cv::updateWindow(const String& windowName)
  {
      cvUpdateWindow(windowName.c_str());
  }
  
  #ifdef HAVE_OPENGL
  namespace
  {
      std::map<cv::String, cv::ogl::Texture2D> wndTexs;
      std::map<cv::String, cv::ogl::Texture2D> ownWndTexs;
      std::map<cv::String, cv::ogl::Buffer> ownWndBufs;
  
      void glDrawTextureCallback(void* userdata)
      {
          cv::ogl::Texture2D* texObj = static_cast<cv::ogl::Texture2D*>(userdata);
  
          cv::ogl::render(*texObj);
      }
  }
  #endif // HAVE_OPENGL
  
  void cv::imshow( const String& winname, InputArray _img )
  {
      const Size size = _img.size();
  #ifndef HAVE_OPENGL
      CV_Assert(size.width>0 && size.height>0);
      {
          Mat img = _img.getMat();
          CvMat c_img = img;
          cvShowImage(winname.c_str(), &c_img);
      }
  #else
      const double useGl = getWindowProperty(winname, WND_PROP_OPENGL);
      CV_Assert(size.width>0 && size.height>0);
  
      if (useGl <= 0)
      {
          Mat img = _img.getMat();
          CvMat c_img = img;
          cvShowImage(winname.c_str(), &c_img);
      }
      else
      {
          const double autoSize = getWindowProperty(winname, WND_PROP_AUTOSIZE);
  
          if (autoSize > 0)
          {
              resizeWindow(winname, size.width, size.height);
          }
  
          setOpenGlContext(winname);
  
          cv::ogl::Texture2D& tex = ownWndTexs[winname];
  
          if (_img.kind() == _InputArray::CUDA_GPU_MAT)
          {
              cv::ogl::Buffer& buf = ownWndBufs[winname];
              buf.copyFrom(_img);
              buf.setAutoRelease(false);
  
              tex.copyFrom(buf);
              tex.setAutoRelease(false);
          }
          else
          {
              tex.copyFrom(_img);
          }
  
          tex.setAutoRelease(false);
  
          setOpenGlDrawCallback(winname, glDrawTextureCallback, &tex);
  
          updateWindow(winname);
      }
  #endif
  }
  
  void cv::imshow(const String& winname, const ogl::Texture2D& _tex)
  {
  #ifndef HAVE_OPENGL
      (void) winname;
      (void) _tex;
      CV_Error(cv::Error::OpenGlNotSupported, "The library is compiled without OpenGL support");
  #else
      const double useGl = getWindowProperty(winname, WND_PROP_OPENGL);
  
      if (useGl <= 0)
      {
          CV_Error(cv::Error::OpenGlNotSupported, "The window was created without OpenGL context");
      }
      else
      {
          const double autoSize = getWindowProperty(winname, WND_PROP_AUTOSIZE);
  
          if (autoSize > 0)
          {
              Size size = _tex.size();
              resizeWindow(winname, size.width, size.height);
          }
  
          setOpenGlContext(winname);
  
          cv::ogl::Texture2D& tex = wndTexs[winname];
  
          tex = _tex;
  
          tex.setAutoRelease(false);
  
          setOpenGlDrawCallback(winname, glDrawTextureCallback, &tex);
  
          updateWindow(winname);
      }
  #endif
  }
  
  // Without OpenGL
  
  #ifndef HAVE_OPENGL
  
  CV_IMPL void cvSetOpenGlDrawCallback(const char*, CvOpenGlDrawCallback, void*)
  {
      CV_Error(CV_OpenGlNotSupported, "The library is compiled without OpenGL support");
  }
  
  CV_IMPL void cvSetOpenGlContext(const char*)
  {
      CV_Error(CV_OpenGlNotSupported, "The library is compiled without OpenGL support");
  }
  
  CV_IMPL void cvUpdateWindow(const char*)
  {
      CV_Error(CV_OpenGlNotSupported, "The library is compiled without OpenGL support");
  }
  
  #endif // !HAVE_OPENGL
  
  #if defined (HAVE_QT)
  
  cv::QtFont cv::fontQt(const String& nameFont, int pointSize, Scalar color, int weight, int style, int spacing)
  {
      CvFont f = cvFontQt(nameFont.c_str(), pointSize,color,weight, style, spacing);
      void* pf = &f; // to suppress strict-aliasing
      return *(cv::QtFont*)pf;
  }
  
  void cv::addText( const Mat& img, const String& text, Point org, const QtFont& font)
  {
      CvMat _img = img;
      cvAddText( &_img, text.c_str(), org, (CvFont*)&font);
  }
  
  void cv::addText( const Mat& img, const String& text, Point org, const String& nameFont,
          int pointSize, Scalar color, int weight, int style, int spacing)
  {
      CvFont f = cvFontQt(nameFont.c_str(), pointSize,color,weight, style, spacing);
      CvMat _img = img;
      cvAddText( &_img, text.c_str(), org, &f);
  }
  
  void cv::displayStatusBar(const String& name,  const String& text, int delayms)
  {
      cvDisplayStatusBar(name.c_str(),text.c_str(), delayms);
  }
  
  void cv::displayOverlay(const String& name,  const String& text, int delayms)
  {
      cvDisplayOverlay(name.c_str(),text.c_str(), delayms);
  }
  
  int cv::startLoop(int (*pt2Func)(int argc, char *argv[]), int argc, char* argv[])
  {
      return cvStartLoop(pt2Func, argc, argv);
  }
  
  void cv::stopLoop()
  {
      cvStopLoop();
  }
  
  void cv::saveWindowParameters(const String& windowName)
  {
      cvSaveWindowParameters(windowName.c_str());
  }
  
  void cv::loadWindowParameters(const String& windowName)
  {
      cvLoadWindowParameters(windowName.c_str());
  }
  
  int cv::createButton(const String& button_name, ButtonCallback on_change, void* userdata, int button_type , bool initial_button_state  )
  {
      return cvCreateButton(button_name.c_str(), on_change, userdata, button_type , initial_button_state );
  }
  
  #else
  
  static const char* NO_QT_ERR_MSG = "The library is compiled without QT support";
  
  cv::QtFont cv::fontQt(const String&, int, Scalar, int,  int, int)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
      return QtFont();
  }
  
  void cv::addText( const Mat&, const String&, Point, const QtFont&)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  void cv::addText(const Mat&, const String&, Point, const String&, int, Scalar, int, int, int)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  void cv::displayStatusBar(const String&,  const String&, int)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  void cv::displayOverlay(const String&,  const String&, int )
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  int cv::startLoop(int (*)(int argc, char *argv[]), int , char**)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
      return 0;
  }
  
  void cv::stopLoop()
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  void cv::saveWindowParameters(const String&)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  void cv::loadWindowParameters(const String&)
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
  }
  
  int cv::createButton(const String&, ButtonCallback, void*, int , bool )
  {
      CV_Error(CV_StsNotImplemented, NO_QT_ERR_MSG);
      return 0;
  }
  
  #endif
  
  #if   defined (HAVE_WIN32UI)  // see window_w32.cpp
  #elif defined (HAVE_GTK)      // see window_gtk.cpp
  #elif defined (HAVE_COCOA)    // see window_carbon.cpp
  #elif defined (HAVE_CARBON)
  #elif defined (HAVE_QT)       // see window_QT.cpp
  #elif defined (WINRT) && !defined (WINRT_8_0) // see window_winrt.cpp
  
  #else
  
  // No windowing system present at compile time ;-(
  //
  // We will build place holders that don't break the API but give an error
  // at runtime. This way people can choose to replace an installed HighGUI
  // version with a more capable one without a need to recompile dependent
  // applications or libraries.
  
  void cv::setWindowTitle(const String&, const String&)
  {
      CV_Error(Error::StsNotImplemented, "The function is not implemented. "
          "Rebuild the library with Windows, GTK+ 2.x or Carbon support. "
          "If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script");
  }
  
  #define CV_NO_GUI_ERROR(funcname) \
      cvError( CV_StsError, funcname, \
      "The function is not implemented. " \
      "Rebuild the library with Windows, GTK+ 2.x or Carbon support. "\
      "If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script", \
      __FILE__, __LINE__ )
  
  
  CV_IMPL int cvNamedWindow( const char*, int )
  {
      CV_NO_GUI_ERROR("cvNamedWindow");
      return -1;
  }
  
  CV_IMPL void cvDestroyWindow( const char* )
  {
      CV_NO_GUI_ERROR( "cvDestroyWindow" );
  }
  
  CV_IMPL void
  cvDestroyAllWindows( void )
  {
      CV_NO_GUI_ERROR( "cvDestroyAllWindows" );
  }
  
  CV_IMPL void
  cvShowImage( const char*, const CvArr* )
  {
      CV_NO_GUI_ERROR( "cvShowImage" );
  }
  
  CV_IMPL void cvResizeWindow( const char*, int, int )
  {
      CV_NO_GUI_ERROR( "cvResizeWindow" );
  }
  
  CV_IMPL void cvMoveWindow( const char*, int, int )
  {
      CV_NO_GUI_ERROR( "cvMoveWindow" );
  }
  
  CV_IMPL int
  cvCreateTrackbar( const char*, const char*,
                    int*, int, CvTrackbarCallback )
  {
      CV_NO_GUI_ERROR( "cvCreateTrackbar" );
      return -1;
  }
  
  CV_IMPL int
  cvCreateTrackbar2( const char* /*trackbar_name*/, const char* /*window_name*/,
                     int* /*val*/, int /*count*/, CvTrackbarCallback2 /*on_notify2*/,
                     void* /*userdata*/ )
  {
      CV_NO_GUI_ERROR( "cvCreateTrackbar2" );
      return -1;
  }
  
  CV_IMPL void
  cvSetMouseCallback( const char*, CvMouseCallback, void* )
  {
      CV_NO_GUI_ERROR( "cvSetMouseCallback" );
  }
  
  CV_IMPL int cvGetTrackbarPos( const char*, const char* )
  {
      CV_NO_GUI_ERROR( "cvGetTrackbarPos" );
      return -1;
  }
  
  CV_IMPL void cvSetTrackbarPos( const char*, const char*, int )
  {
      CV_NO_GUI_ERROR( "cvSetTrackbarPos" );
  }
  
  CV_IMPL void cvSetTrackbarMax(const char*, const char*, int)
  {
      CV_NO_GUI_ERROR( "cvSetTrackbarMax" );
  }
  
  CV_IMPL void cvSetTrackbarMin(const char*, const char*, int)
  {
      CV_NO_GUI_ERROR( "cvSetTrackbarMin" );
  }
  
  CV_IMPL void* cvGetWindowHandle( const char* )
  {
      CV_NO_GUI_ERROR( "cvGetWindowHandle" );
      return 0;
  }
  
  CV_IMPL const char* cvGetWindowName( void* )
  {
      CV_NO_GUI_ERROR( "cvGetWindowName" );
      return 0;
  }
  
  CV_IMPL int cvWaitKey( int )
  {
      CV_NO_GUI_ERROR( "cvWaitKey" );
      return -1;
  }
  
  CV_IMPL int cvInitSystem( int , char** )
  {
  
      CV_NO_GUI_ERROR( "cvInitSystem" );
      return -1;
  }
  
  CV_IMPL int cvStartWindowThread()
  {
  
      CV_NO_GUI_ERROR( "cvStartWindowThread" );
      return -1;
  }
  
  //-------- Qt ---------
  CV_IMPL void cvAddText( const CvArr*, const char*, CvPoint , CvFont* )
  {
      CV_NO_GUI_ERROR("cvAddText");
  }
  
  CV_IMPL void cvDisplayStatusBar(const char* , const char* , int )
  {
      CV_NO_GUI_ERROR("cvDisplayStatusBar");
  }
  
  CV_IMPL void cvDisplayOverlay(const char* , const char* , int )
  {
      CV_NO_GUI_ERROR("cvNamedWindow");
  }
  
  CV_IMPL int cvStartLoop(int (*)(int argc, char *argv[]), int , char* argv[])
  {
      (void)argv;
      CV_NO_GUI_ERROR("cvStartLoop");
      return -1;
  }
  
  CV_IMPL void cvStopLoop()
  {
      CV_NO_GUI_ERROR("cvStopLoop");
  }
  
  CV_IMPL void cvSaveWindowParameters(const char* )
  {
      CV_NO_GUI_ERROR("cvSaveWindowParameters");
  }
  
  // CV_IMPL void cvLoadWindowParameterss(const char* name)
  // {
  //     CV_NO_GUI_ERROR("cvLoadWindowParameters");
  // }
  
  CV_IMPL int cvCreateButton(const char*, void (*)(int, void*), void*, int, int)
  {
      CV_NO_GUI_ERROR("cvCreateButton");
      return -1;
  }
  
  
  #endif
  
  /* End of file. */
  