#include <wx/scrolwin.h>

#include <wx/image.h>

#include <wx/bitmap.h>

#include <wx/dc.h>

#include <iostream>

#include "wxPictureWindow.hpp"

const int factor = 3;

BEGIN_EVENT_TABLE(wxPictureWindow, wxScrolledWindow)

  EVT_MOUSE_EVENTS (wxPictureWindow::OnMouse)

END_EVENT_TABLE()

wxPictureWindow::wxPictureWindow(const wxImage &img, const CropArea area, wxWindow *parent)

    :wxScrolledWindow(parent, wxID_ANY),

    _bmp(wxBitmap(img)),

    _area(area)

{

    SetVirtualSize(_bmp.GetWidth(), _bmp.GetHeight());

    SetScrollRate(10, 10);

    _area.x /= factor;

    _area.y /= factor;

    _area.width /= factor;

    _area.height /= factor;

}

void wxPictureWindow::OnDraw(wxDC &dc)

{

    dc.DrawBitmap(_bmp, 0, 0, false);

    wxRect rect(_area.x, _area.y, _area.width, _area.height);

    dc.SetPen(*wxGREEN_PEN);

    dc.SetBrush(*wxTRANSPARENT_BRUSH);

    dc.DrawRectangle(rect);

}

void wxPictureWindow::OnMouse(wxMouseEvent &ev)

{

    wxClientDC dc(this);

    DoPrepareDC(dc);

    if (ev.LeftDown())

    {

        _area.x = ev.GetLogicalPosition(dc).x;

        _area.y = ev.GetLogicalPosition(dc).y;

        _area.width = 0;

        _area.height = 0;

    }

    else if (ev.LeftIsDown())

    {

        _area.width = ev.GetLogicalPosition(dc).x - _area.x;

        _area.height = ev.GetLogicalPosition(dc).y - _area.y;

    }

    Refresh();

}

wxPictureWindow::~wxPictureWindow()

{

    std::cout << _area.x * factor << " ";

    std::cout << _area.y * factor << " ";

    std::cout << _area.width * factor << " ";

    std::cout << _area.height * factor << std::endl;

}