avtk_image.h

/*
 * Author: Harry van Haaren 2013
 *         harryhaaren@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., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 */


#ifndef AVTK_IMAGE_H
#define AVTK_IMAGE_H

#include <FL/Fl_Widget.H>
#include <vector>
#include <string>
#include <iostream>
#include <stdio.h>

#include <FL/fl_draw.H>

using namespace std;

namespace Avtk
{

class Image : public Fl_Widget
{
  public:
    Image(int _x, int _y, int _w, int _h, const char *_label=0 ):
        Fl_Widget(_x, _y, _w, _h, _label)
    {
      x = _x;
      y = _y;
      w = _w;
      h = _h;
      
      label = _label;
      
      bits = -1;
      imageDataPtr = 0;
    }
    
    void setPixbuf(const unsigned char* data, int b )
    {
      bits = b;
      imageDataPtr = data;
    }
    
    int x, y, w, h;
    const char* label;
    
    int bits;
    const unsigned char* imageDataPtr;
    
    void draw()
    {
      if ( damage() & FL_DAMAGE_ALL && imageDataPtr != 0 )
      {
        fl_draw_image((const uchar*)imageDataPtr, x, y, w, h, bits, w*bits);
      }
    }
    
    void resize(int X, int Y, int W, int H)
    {
      Fl_Widget::resize(X,Y,W,H);
      x = X;
      y = Y;
      w = W;
      h = H;
      redraw();
    }
    
    int handle(int event)
    {
      switch(event)
      {
        case FL_PUSH:
          do_callback();
          return 1;
        case FL_DRAG:
          return 1;
        case FL_RELEASE:
          return 1;
        case FL_SHORTCUT:
          if ( test_shortcut() )
          {
            do_callback();
            return 1;
          }
          return 0;
        default:
          return Fl_Widget::handle(event);
      }
    }
};

/*
static cairo_status_t readPngData( void *userData,
                                   unsigned char *data,
                                   unsigned int length)
{
  //Image* i = (Image*)userData;
  //cout << "readPngData, imageDataPtr = " << i->imageDataPtr << endl;
  //memcpy( data, i->imageDataPtr, length );
  
  memcpy( data, userData, length );
  
  return CAIRO_STATUS_SUCCESS;
}
*/

} // Avtk

#endif