PreviewWindow.h

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// -*- c-basic-offset: 4 -*-
/*  This is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This software is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public
 *  License along with this software. If not, see
 *  <http://www.gnu.org/licenses/>.
 *
 */

#ifndef PREVIEWWINDOW_H
#define PREVIEWWINDOW_H

#include <wx/scrolwin.h>
#include <wx/bitmap.h>
#include <wx/image.h>
#include "base_wx/wxcms.h"

class PreviewWindow : public wxScrolledWindow
{
public:
    bool Create(wxWindow* parent, wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = wxTAB_TRAVERSAL, const wxString& name = "panel");
    void setImage (const wxString& filename);
    void setScale(double factor);
    double getScale();
    void update();
    virtual void OnDraw(wxDC& dc) wxOVERRIDE;
protected:
    void OnSize(wxSizeEvent & e);
    double getScaleFactor() const;
    double calcAutoScaleFactor(wxSize size);
    void rescaleImage();
 private:
    //orignal image
    wxImage m_image;
    // scaled bitmap
    wxBitmap m_bitmap;
    int scale(int x) const;
    double scale(double x) const;
    double m_scaleFactor{ 1.0 };
    bool m_fitToWindow{ false };
    vigra::ImageImportInfo::ICCProfile m_iccProfile;
    DECLARE_DYNAMIC_CLASS(PreviewWindow)
};

#endif // PREVIEWWINDOW_H