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TopicExamplePreviewBar.h

Go to the documentation of this file.

#ifndef Impala_Visualization_GUI_TopicExamplePreviewBar_h
#define Impala_Visualization_GUI_TopicExamplePreviewBar_h

#include "Core/Trec/SearchTopic.h"
#include "PreviewBar.h"

namespace Impala {
namespace Visualization {
namespace GUI {

using namespace OglGui;

class TopicExamplePreviewBar : public PreviewBar
{
    typedef Core::Trec::SearchTopic         SearchTopic;
public:
    TopicExamplePreviewBar(OglGui::Window *parent, int w, int h,
                           SearchTopic *searchTopic, double quality,
                           bool selected, int thumbW, int thumbH,
                           double viewScale) :
        PreviewBar(parent, w, h, "Examples", quality, selected)
    {
        Init(searchTopic, w, h, thumbW, thumbH, viewScale);
    }

    virtual void
    ImageSelectionEvent(ImagesWindow *src, int imIndex, void* listenerData)
    {
        ILOG_DEBUG("ImSelEvent: selected example image " << imIndex);
        if (!mListener) return;

        // for example images there is no keyframe in the index, send the rank
        // instead and make sure we catch this back in the QueryGui
        mListener->PreviewBarImageClickEvent(this,mName,imIndex,mListenerData);
    }

private:
    void Init(SearchTopic *searchTopic, int wndW, int wndH,
              int thumbW, int thumbH, double viewscale)
    {
        mSearchTopic    = searchTopic;
        mPreviewImages  = NULL;

        if (wndH < thumbH) // WndH smaller than thumbH, adjusting scale to fit
            viewscale = (wndH-2.0) / thumbH;

        // images:
        if (searchTopic == NULL)
            return;

        int nrImOnRow = (wndW - 124) / (thumbW * viewscale) + 1;
        Window *c = new Window(this, 120, 0, wndW - 124, wndH);
        // std::cout << " Preview: " << mName << ": " << thumbW << "x"
        //           << thumbH << "@" << viewscale << ", nr " << nrImOnRow
        //           << std::endl;
        mPreviewImages = new Visualization::ImageSet(c, thumbW, thumbH,
                                                     viewscale, nrImOnRow, 1,0);
        mPreviewImages->ActivateInfoBox(false);
        mPreviewImages->SetImagesListener(this, 0);

        for (int i=0; i < mSearchTopic->GetCurTopicNrExamples(); i++)
        {
            mPreviewImages->
                AddImage(mSearchTopic->GetCurTopicImageExample(i,true),"Direct",
                         mSearchTopic->GetCurTopicExampleName(i),true);
        }
    }

    // RvB: Obviously needs some work!!!
    virtual int GetImageKeyframeID(int rank)
    {
        if (mSearchTopic == NULL)
            return -1;

        return -1;
    }

    SearchTopic *mSearchTopic;

    ILOG_VAR_DEC;
};
ILOG_VAR_INIT(TopicExamplePreviewBar, Visualization.GUI);


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

#endif

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