1 #include <wx/scrolwin.h>

     2 #include <wx/image.h>

     3 #include <wx/bitmap.h>

     4 #include <wx/dc.h>

     5 #include <iostream>

     6 #include "wxPictureWindow.hpp"

     7 

     8 const int factor = 3;

     9 

    10 BEGIN_EVENT_TABLE(wxPictureWindow, wxScrolledWindow)

    11   EVT_MOUSE_EVENTS (wxPictureWindow::OnMouse)

    12 END_EVENT_TABLE()

    13 

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

    15     :wxScrolledWindow(parent, wxID_ANY),

    16     _bmp(wxBitmap(img)),

    17     _area(area)

    18 {

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

    20     SetScrollRate(10, 10);

    21     _area.x /= factor;

    22     _area.y /= factor;

    23     _area.width /= factor;

    24     _area.height /= factor;

    25 }

    26 

    27 void wxPictureWindow::OnDraw(wxDC &dc)

    28 {

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

    30 

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

    32     dc.SetPen(*wxGREEN_PEN);

    33     dc.SetBrush(*wxTRANSPARENT_BRUSH);

    34     dc.DrawRectangle(rect);

    35 }

    36 

    37 void wxPictureWindow::OnMouse(wxMouseEvent &ev)

    38 {

    39     wxClientDC dc(this);

    40     DoPrepareDC(dc);

    41 

    42     if (ev.LeftDown())

    43     {

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

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

    46         _area.width = 0;

    47         _area.height = 0;

    48     }

    49     else if (ev.LeftIsDown())

    50     {

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

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

    53     }

    54 

    55     Refresh();

    56 }

    57 

    58 wxPictureWindow::~wxPictureWindow()

    59 {

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

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

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

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

    64 }