PreviewPanel.h

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// -*- c-basic-offset: 4 -*-
#ifndef _PREVIEWPANEL_H
#define _PREVIEWPANEL_H

#include <vector>

#include <base_wx/wxImageCache.h>

#include <vigra_ext/ROIImage.h>

class wxImage;
class PreviewFrame;

class PreviewPanel : public wxPanel, public PT::PanoramaObserver
{
    typedef PT::RemappedPanoImage<vigra::BRGBImage, vigra::BImage> RemappedImage;
public:

    PreviewPanel();

    bool Create(wxWindow* parent, wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = wxTAB_TRAVERSAL, const wxString& name = wxT("panel"));

    void Init(PreviewFrame *parent, PT::Panorama * pano );

    virtual ~PreviewPanel();

    void panoramaChanged(PT::Panorama &pano);
    void panoramaImagesChanged(PT::Panorama &pano, const PT::UIntSet & imgNr);

    void SetAutoUpdate(bool enabled);

    // forces an update of all images.
    void ForceUpdate();

    // select which images should be shown.
//    void SetDisplayedImages(const PT::UIntSet &images);
    
    // blending modes available
    enum BlendMode { BLEND_COPY, BLEND_DIFFERENCE };
    
    void SetBlendMode(BlendMode b);

private:

    // draw the preview directly onto the canvas
    void DrawPreview(wxDC & dc);

    // remaps the images, called automatically if autopreview is enabled.
    void updatePreview();

    void mapPreviewImage(unsigned int imgNr);

    void OnResize(wxSizeEvent & e);
    void OnDraw(wxPaintEvent & event);
    void OnMouse(wxMouseEvent & e);
    void mousePressRMBEvent(wxMouseEvent & e);
    void mousePressLMBEvent(wxMouseEvent & e);

    void OnUpdatePreview(wxCommandEvent & e);
    void DrawOutline(const std::vector<hugin_utils::FDiff2D> & points, wxDC & dc, int offX, int offY);

    void mouse2erect(int xm, int ym, double &xd, double & yd);

    PT::Panorama  * pano;

    bool m_autoPreview;

    vigra::Diff2D m_panoImgSize;

        wxBitmap * m_panoBitmap;
    // currently updating the preview.

    PT::UIntSet m_dirtyImgs;

    // panorama options
    PT::PanoramaOptions opts;

    // transformation for current preview coordinates into equirect coordinates
    PTools::Transform * m_pano2erect;

    // cache for remapped images
    SmallRemappedImageCache m_remapCache;

    BlendMode m_blendMode;

    PreviewFrame * parentWindow;
    wxCursor * m_cursor;

    bool m_state_rendering;
    bool m_rerender;
    bool m_imgsDirty;

    DECLARE_EVENT_TABLE()
    DECLARE_DYNAMIC_CLASS(PreviewPanel)
};

class PreviewPanelXmlHandler : public wxXmlResourceHandler
{
    DECLARE_DYNAMIC_CLASS(PreviewPanelXmlHandler)

    public:
        PreviewPanelXmlHandler();
        virtual wxObject *DoCreateResource();
        virtual bool CanHandle(wxXmlNode *node);
};

#endif // _PREVIEWPANEL_H

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