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ViewListenerWithRectangles.h

Go to the documentation of this file.

#ifndef Impala_Visualization_ViewListenerWithRectangles_h
#define Impala_Visualization_ViewListenerWithRectangles_h

#include "Visualization/View.h"
#include "Core/Geometry/RectangleList.h"

namespace Impala
{
namespace Visualization
{


class ViewListenerWithRectangles : public OglGui::ViewListener
{
public:

    ViewListenerWithRectangles()
    {
        mList = new Core::Geometry::RectangleList;
        mColor = oglRED;
    }

    // elements in list denote rectangles in image coordinates
    // so view should contain an image!
    ViewListenerWithRectangles(Core::Geometry::RectangleList* rList,
                               ULONG color = oglRED)
    {
        mList = rList;
        mColor = color;
    }

    // clears list and sets one rectangle
    void SetRectangle(int left, int top, int right, int bottom)
    {
        Clear();
        AddRectangle(left, top, right, bottom);
    }

    void AddRectangle(int left, int top, int right, int bottom)
    {
        mList->push_back(Core::Geometry::Rectangle(left,top,right,bottom));
    }

    void Clear()
    {
        mList->EraseAll();
    }

    virtual void OnDrawView(OglGui::View* view)
    {
        if (mList->size() == 0)
            return;

        OGLIMAGE* oglIm = view->GetOGLIMAGE();
        if (!oglIm)
            return;

        OGC ogc;
        OGCSave(&ogc);
        glPushMatrix();

        viewSys.View2DImageTransform(view->GetOGLVIEW2D());
        SetSolidLineColor(mColor);
        SetLineWidth(1);
        for (Core::Geometry::RectangleListCI r=mList->begin() ; r!=mList->end() ; r++)
            //DrawRectangle(mX, oglIm->h - mY - mH, mW, mH);
            DrawRectangle(r->mLeft, oglIm->h - r->mTop - r->Height(),
                          r->Width(), r->Height());
        glPopMatrix();
        OGCRestore(&ogc);
    }

private:

    Core::Geometry::RectangleList* mList;
    ULONG                      mColor;

};

} // namespace Visualization
} // namespace Impala

#endif

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