display_image_frame.cpp

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/*
 *  Copyright (C) Massimo Cora' 2006 <maxcvs@gmail.com>
 *
 *  This program 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 program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#if defined(__GNUG__) && !defined(__APPLE__)
#pragma implementation "display_image_frame.h"
#endif

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif


#include "display_image_frame.h"


IMPLEMENT_CLASS( DisplayImageFrame, wxFrame )


BEGIN_EVENT_TABLE( DisplayImageFrame, wxFrame )

    EVT_CLOSE( DisplayImageFrame::OnCloseWindow )


END_EVENT_TABLE()

DisplayImageFrame::DisplayImageFrame( )
{
}

DisplayImageFrame::~DisplayImageFrame( )
{
}

DisplayImageFrame::DisplayImageFrame( wxWindow* parent, 
                                                                         int stream_id,
                                                                         const wxSize& size, 
                                                                         wxWindowID id, 
                                                                         const wxString& caption,
                                                                         const wxPoint& pos, 
                                                                         long style ) : _stream_id ( stream_id )
{
        char tmp_str[0xff];

        sprintf(tmp_str, "Stream detected %d", stream_id);
#ifdef __LINUX__        
        wxChar buf[50];

        ::wxSnprintf(buf, 50, wxT("Stream detected %d"), stream_id);
        wxString caption_tmp(buf);
#else   // WIN32
        wxString caption_tmp(wxT(tmp_str));
#endif
    Create( parent, id, caption_tmp, pos, size, style );
}

bool DisplayImageFrame::Create( wxWindow* parent, wxWindowID id, const wxString& caption, const wxPoint& pos, const wxSize& size, long style )
{

    wxFrame::Create( parent, id, caption, pos, size, style );

        _window_width = size.GetWidth();
        _window_height = size.GetHeight();

    CreateControls();
    Centre();


        _can_display = false;
    return TRUE;
}

void DisplayImageFrame::CreateControls()
{    
    DisplayImageFrame* itemFrame1 = this;

    itemPanel2 = new wxPanel( itemFrame1, ID_PANEL, wxDefaultPosition, wxDefaultSize, wxSUNKEN_BORDER|wxTAB_TRAVERSAL );

        _display_canvas = NULL;
}

bool DisplayImageFrame::ShowToolTips()
{
    return TRUE;
}

wxBitmap DisplayImageFrame::GetBitmapResource( const wxString& name )
{
    // Bitmap retrieval
    return wxNullBitmap;
}

wxIcon DisplayImageFrame::GetIconResource( const wxString& name )
{
    // Icon retrieval
    return wxNullIcon;
}



void DisplayImageFrame::DisplayIplImage( IplImage *image )
{
        if ( _display_canvas == NULL ) {
                _display_canvas = new DisplayCanvas( itemPanel2, wxSize(image->width, image->height) );
        }

        // we adopt the rule that if the stream go on we will go on
        // displaying it's contents. The window can just be minimized, but not
        // destroyed.
        if ( _can_display == false ) {
            wxWindow* window = this;
                window->Show();         
                _can_display = true;
        }

        _display_canvas->DrawIplImage( image );
}


void DisplayImageFrame::OnCloseWindow( wxCloseEvent& event )
{
    // Before editing this code, remove the block markers.
    wxWindow* window = this;
    window->Hide();

        _can_display = false;
}

---