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ConceptPreviewBar.h

Go to the documentation of this file.

#ifndef Impala_Visualization_GUI_ConceptPreviewBar_h
#define Impala_Visualization_GUI_ConceptPreviewBar_h

#include "PreviewBar.h"
#include "Core/Trec/ThreadSet.h"
#include "Basis/CmdOptions.h"
#include "Basis/ILog.h"

namespace Impala {
namespace Visualization {
namespace GUI {

//using namespace OglGui;
//using namespace Core::Trec;

class ConceptPreviewBar : public PreviewBar
{
public:
    typedef Core::Trec::Thread                  Thread;
    typedef Core::Trec::ThreadSet               ThreadSet;

    ConceptPreviewBar(OglGui::Window *parent, int w, int h, String concept,
                      ThreadSet *threadset, double quality, bool selected,
                      int thumbW, int thumbH, double viewscale) :
        PreviewBar(parent, w, h, concept, quality, selected)
    {
        Init(threadset, thumbW, thumbH, viewscale);
    }

private:
    void Init(ThreadSet *threadset, int thumbW, int thumbH, double viewscale)
    {
        int wndW = WndWidth();
        int wndH = WndHeight();

        if (wndH < thumbH) // H smaller than thumbH, adjusting scale to fit
            viewscale = (wndH-2) / (double)thumbH;

        mThread    = NULL;
        mThreadSet = threadset;
        mMaxImages = CmdOptions::GetInstance().GetInt("maxImagesOnRow");

        // images:
        if (threadset == NULL)
        {
            mPreviewImages = NULL;
            return;
        }

        int nrImOnRow = (wndW - 174) / (thumbW * viewscale) + 1;
        if (nrImOnRow > mMaxImages)
            nrImOnRow = mMaxImages;

        Window *c      = new Window(this, 170, 0, wndW - 174, wndH);
        mPreviewImages = new Visualization::ImageSet(c, thumbW, thumbH,
                                                     viewscale,nrImOnRow,1,0);
        mPreviewImages->ActivateInfoBox(false);
        mPreviewImages->SetImagesListener(this, 0);

        // 1. find the Thread using the "concept" name
        //    TODO: make this less hardcoded.
        Thread *t = NULL;
        for (int i=0; i < threadset->GetNrThreads(); i++)
        {
            if (threadset->GetThread(i)->GetName() == String("rank_") + mName)
            {
                t = threadset->GetThread(i);
                break;
            }
        }

        ILOG_DEBUG("finding " << mName << " thread=" << t);

        // 2. show one row of images
        if (t != NULL)
        {
            int firstShot = t->GetFirstShot();
            for (int i=0; i<nrImOnRow; i++)
            {
                int shot = t->GetShotAt(firstShot, i);
                if (shot < 0)
                    break;
                // shot name is not interesting for end users, but if you need
                // it: threadset->GetShotName(shot)
                mPreviewImages->AddImage(threadset->GetImageByShotID(shot),
                                         "Direct", "", true);
            }
            mThread = t;
        }
        else
        {
            ILOG_WARN("Could not find thread for concept '" << mName << "'");
        }
    }

    virtual int GetImageKeyframeID(int rank)
    {
        if (mThread == NULL)
            return -1;

        int shot = mThread->GetShotAt(mThread->GetFirstShot(), rank);
        return mThreadSet->GetShotRKF(shot);
    }

    Thread*     mThread;
    ThreadSet*  mThreadSet;
    int         mMaxImages;

    ILOG_VAR_DEC;
};

ILOG_VAR_INIT(ConceptPreviewBar, Visualization.GUI);

} // GUI
} // Visualization
} // Impala

#endif

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