// generated by Fast Light User Interface Designer (fluid) version 1.0300
#include "stdafx.h"
#include "OBPM_UI.h"
OBPMViewUI::OBPMViewUI() 
{
	int wCam,hCam;
	wCam=4;  //  1280;
	hCam=3;  //960;
//layout of widgets of interface	
  {   
	int wWin,hWin;
	mainWindow = new Fl_Double_Window(1600, 844, "Video Player");
    mainWindow->fullscreen();
    mainWindow->user_data((void*)(this));
	wWin=mainWindow->decorated_w();
    hWin=mainWindow->decorated_h();	

	int wZoomSlider,hZoomSlider;
	hZoomSlider=30;
	int wYPanSlider,hYPanSlider;
	wYPanSlider=30;
	int wXPanSlider,hXPanSlider;
	hXPanSlider=30;

    int wView,hView;	
	hView=hWin;

	int wBox,hBox;
	hBox=hView-hZoomSlider-hXPanSlider;
	wBox=1.0*wCam/hCam*hBox;
	wView=wBox+wYPanSlider;

	wZoomSlider=wBox; 	hYPanSlider=hBox;  	wXPanSlider=wBox;

    { VideoView = new Fl_Group(0, 0, wView, hView);
      VideoView->align(Fl_Align(FL_ALIGN_CENTER));
	  {
	    zoom_fit=new Fl_Button(0,0,wYPanSlider,hZoomSlider,"@<->");
	  } // Fl_Button* zoom_fit

	  {
		origin_fit=new Fl_Button(0,hZoomSlider+hYPanSlider,
			                     wYPanSlider,hXPanSlider,"@+");
	  }// Fl_Button* origin_fit

      {
		zoom = new Fl_Value_Slider(wYPanSlider, 0, wZoomSlider, 
			                       hZoomSlider, "Zoom");
        zoom->type(5);
        zoom->selection_color((Fl_Color)1);
        zoom->labeltype(FL_NO_LABEL);
        zoom->labelfont(1);
        zoom->labelsize(12);
        zoom->minimum(0.01);
        zoom->maximum(10);
        zoom->step(0.01);
        zoom->value(1.0);
        zoom->align(Fl_Align(FL_ALIGN_LEFT));
      } // Fl_Slider* zoom
      { ypan = new Fl_Value_Slider(0, hZoomSlider, wYPanSlider, 
		                              hYPanSlider, "Y Pan");
        ypan->type(4);
        ypan->selection_color((Fl_Color)4);
        ypan->labeltype(FL_NO_LABEL);
        ypan->labelsize(12);
        ypan->minimum(-1.0);
        ypan->maximum(1.0);
        ypan->step(0.01);
        ypan->value(0.0);
        ypan->align(Fl_Align(FL_ALIGN_LEFT));
      } // Fl_Slider* ypan
      {
		xpan = new Fl_Value_Slider(wYPanSlider, hView-hXPanSlider, 
			                       wXPanSlider, hXPanSlider, "X pan");
        xpan->type(5);
        xpan->selection_color((Fl_Color)4);
        xpan->labeltype(FL_NO_LABEL);
        xpan->labelfont(1);
        xpan->labelsize(12);
        xpan->minimum(-1.0);
        xpan->maximum(1.0);
        xpan->step(0.01);
        xpan->value(0.0);
        xpan->align(Fl_Align(FL_ALIGN_LEFT));
      } // Fl_Slider* xpan

	  {
		glView = new VideoGlWin(wYPanSlider,hZoomSlider,wBox,hBox);
	 	glView->selection_color((Fl_Color)10);
	  }
      VideoView->end();
    } // Fl_Group* VideoView
	
	int wBtnPannel,hBtnPannel;
	wBtnPannel=wWin-wView;
	hBtnPannel=wBtnPannel*0.3;

	int mBtn=3,nBtn=2;
	int wBtn,hBtn;
	wBtn=wBtnPannel/mBtn*0.8;
	hBtn=hBtnPannel/nBtn*0.8;
	int dwBtn,dhBtn;
	dwBtn=(wBtnPannel-wBtn*mBtn)/(mBtn+1.0);
	dhBtn=(hBtnPannel-hBtn*nBtn)/(nBtn+1.0);
    { grpCommandBtn = new Fl_Group(wWin-wBtnPannel, hWin-hBtnPannel, 
		                           wBtnPannel, hBtnPannel);
      grpCommandBtn->box(FL_FLAT_BOX);
      grpCommandBtn->color((Fl_Color)33);
      grpCommandBtn->align(Fl_Align(FL_ALIGN_BOTTOM_RIGHT));
      { btnFileSrc = new Fl_Light_Button(wWin-wBtnPannel+1.0*wBtn+2.0*dwBtn, 
		               hWin-hBtnPannel+1.0*dhBtn, wBtn, hBtn, "Open File...");

        btnFileSrc->labelfont(1);
        btnFileSrc->labelsize(20);
		btnFileSrc->selection_color((Fl_Color)2);
      } // Fl_Button* btnFileSrc
      grpCommandBtn->end();
    } // Fl_Group* grpCommandBtn

//set the callback functions
	
	btnFileSrc->callback((Fl_Callback*)cb_FileSrc);

	zoom->callback((Fl_Callback*)cb_zoom);
	xpan->callback((Fl_Callback*)cb_xpan);
	ypan->callback((Fl_Callback*)cb_ypan);
	zoom_fit->callback( (Fl_Callback*)cb_zoom_fit);
	origin_fit->callback( (Fl_Callback*)cb_origin_fit);

    mainWindow->end();
  } // Fl_Double_Window* mainWindow
  
  SRC_ID=0;
  m_pVideoFileCapture=NULL;
  m_continueCaptureThread=false;
  m_rawVideoframe=NULL;
  m_heventCaptureThreadDone = CreateEvent( NULL, FALSE, FALSE, NULL );

}


void OBPMViewUI::start(int argc,char**argv)
{
	mainWindow->show(argc,argv);
}


void OBPMViewUI::cb_zoom_i(Fl_Value_Slider * o, void * v)
{
	this->glView->zoom_ratio=o->value();
	this->glView->redraw();
}
void OBPMViewUI::cb_zoom(Fl_Value_Slider * o, void * v)
{
	((OBPMViewUI*)(o->parent()->parent()->user_data()))->cb_zoom_i(o,v);	
}


void OBPMViewUI::cb_xpan_i(Fl_Value_Slider* o, void*) 
{
	this->glView->xpan_ratio=o->value();
	this->glView->redraw();
}
void OBPMViewUI::cb_xpan(Fl_Value_Slider* o, void* v) 
{
  ((OBPMViewUI*)(o->parent()->parent()->user_data()))->cb_xpan_i(o,v);
}

void OBPMViewUI::cb_ypan_i(Fl_Value_Slider* o, void*) 
{
	this->glView->ypan_ratio=o->value();
	this->glView->redraw();
}
void OBPMViewUI::cb_ypan(Fl_Value_Slider* o, void* v) 
{
  ((OBPMViewUI*)(o->parent()->parent()->user_data()))->cb_ypan_i(o,v);
}

void OBPMViewUI::cb_zoom_fit_i(Fl_Button* o, void* v)
{
	this->glView->zoom_ratio=1.0;
	this->zoom->value(1.0);
	this->glView->redraw();
}

void OBPMViewUI::cb_zoom_fit(Fl_Button* o, void* v)
{
	((OBPMViewUI*)(o->parent()->parent()->user_data()))->cb_zoom_fit_i(o,v);
}

void OBPMViewUI::cb_origin_fit_i(Fl_Button* o, void* v)
{
	this->glView->xpan_ratio=0.0;
	this->glView->ypan_ratio=0.0;
	this->xpan->value(0.0);
	this->ypan->value(0.0);
	this->glView->redraw();
}

void OBPMViewUI::cb_origin_fit(Fl_Button* o, void* v)
{
	((OBPMViewUI*)(o->parent()->parent()->user_data()))->cb_origin_fit_i(o,v);
}


void OBPMViewUI::cb_FileSrc_i(Fl_Light_Button* o, void* v)
{
	
	OBPMViewUI* pUI=((OBPMViewUI*)(o->parent()->parent()->user_data()));

	if(pUI->SRC_ID==0)
	{
		bool bSuccess;
		bSuccess=true;
		//file choose dialog//
		Fl_Native_File_Chooser fnfc;
		const char szFilter[1024]=
			 "Video files(*.mpg,*.mpeg,*.mov,*.avi)\t*.{mpg,mpeg,mov,avi}\n";
		fnfc.title("Choose a video file");
		fnfc.type(Fl_Native_File_Chooser::BROWSE_FILE);
		fnfc.filter(szFilter);  
		switch(fnfc.show())
		{
		case -1:
		case 1:
			o->clear();
			return;
			break;
		default:
			break;
		}

		CvCapture *pCapture;
		pCapture=cvCreateFileCapture(fnfc.filename());			
		if(!pCapture)
			bSuccess=false;
		else
			pUI->VideoFileConnect(pCapture);

		if(bSuccess)
		{
			((Fl_Light_Button*) o)->set();
			pUI->SRC_ID=1;
		}
		else
		{
			((Fl_Light_Button*) o)->clear();
			fl_alert("Can not open specified file! \n Please check again.");
		}
	}
	else if(pUI->SRC_ID==1)
	{
		pUI->m_continueCaptureThread=false;			
		DWORD dwRet = WaitForSingleObject( m_heventCaptureThreadDone, 5000 );
		if(dwRet==WAIT_TIMEOUT)
			fl_alert("Can not get grab finish signal within 5s");
		
		if(pUI->glView->m_processedImage)
		{
			cvReleaseImage(&pUI->glView->m_processedImage);
			pUI->glView->m_processedImage=NULL;
		}
		((Fl_Light_Button*) o)->clear();
		pUI->glView->redraw();
		SRC_ID=0;
	}

}

void OBPMViewUI::cb_FileSrc(Fl_Light_Button* o, void* v)
{
	((OBPMViewUI*)(o->parent()->parent()->user_data()))->cb_FileSrc_i(o,v);
}


void OBPMViewUI::VideoFileConnect(CvCapture *pVideo)
{
	m_pVideoFileCapture=pVideo;
	m_continueCaptureThread=true;
	fl_create_thread(thread_capture_video_file,&ThreadCaptureVideoFile,this);
}


void* OBPMViewUI::ThreadCaptureVideoFile(void* pparam)
{
	OBPMViewUI* pUI =( (OBPMViewUI*) pparam);
	unsigned int uiRet;
	uiRet=pUI->DoCaptureLoop();
	if(uiRet!=0)
	{
		fl_alert("The grab thread has encountered a problem and had to terminate.");
		//Signal that the thread has died.
		SetEvent(pUI->m_heventCaptureThreadDone);
	}
	return 0;
}

//
// The image Capture thread.
unsigned int OBPMViewUI::DoCaptureLoop(void)
{	
	OBPMViewUI* pUI =this;	
	//start of main capture loop
	while(pUI->m_continueCaptureThread)
	{
		m_rawVideoframe=cvQueryFrame(m_pVideoFileCapture);		
		if(!m_rawVideoframe)
			break;
		if(!m_continueCaptureThread) 			break;
		
		CvSize sz;
		sz.width=m_rawVideoframe->width; 
		sz.height=m_rawVideoframe->height;

		CSingleLock dataLock( &m_csData );
		dataLock.Lock();

		if(!pUI->glView->m_processedImage)
			pUI->glView->m_processedImage=cvCreateImage(sz,IPL_DEPTH_8U,1);

		switch(m_rawVideoframe->nChannels)
		{
		case 3:
			{
				cvCvtColor(m_rawVideoframe,
					pUI->glView->m_processedImage,
					CV_BGR2GRAY);
				break;
			}
		case 1:
			{
				cvCopyImage(m_rawVideoframe,pUI->glView->m_processedImage);
				break;
			}
		default:
			break;
		}		
		dataLock.Unlock();

		//redraw the window
		pUI->glView->redraw();
	}
	pUI->m_continueCaptureThread=false;
	SetEvent(pUI->m_heventCaptureThreadDone);

	return 0;
}