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#ifndef BITMAP_H_
#define BITMAP_H_

#include <string>
#include <sstream>
#include <windows.h>

class Bitmap {
  public:
    Bitmap();
    Bitmap(std::string const& file_name);

    operator HBITMAP() const;

  protected:
    friend class MemoryDC;
    Bitmap(HBITMAP);
    HBITMAP bitmap_;
};

#endif

#include "Bitmap.h"

/*! \page bmps_in_memory drawing on Bitmaps in Memory
 *
 *   If you want to use bitmaps in memory and draw upon them,
 *   you have to follow these steps:
 *
 *   \li 1 Allocate a MemoryDC (this is a memory device context used for the drawing operations
 *         which a device context provides)
 *   \li 2 Create a CompatibleBitmap
 *   \li 3 Select this compatible Bitmap into the memory device context (the bitmap now becomes
 *         the surface for the drawing operations made onto the device context. Keep the
 *         return value for unselecting it again
 *   \li 4 do your drawings
 *   \li 5 unselect the selected bitmap
 * 
 *
 * See the following code for an example.
 *
 *   \code
 
  MemoryDC memDc;
  CompatibleBitmap compBmp(memDc, width, height);
  Bitmap oldBmp = memDc.Select(compBmp);
       
  // Your drawing operations go here
 
  memDc.Select(oldBmp);

 *   \endcode
 *
 *
 *
 */

Bitmap::Bitmap() : bitmap_(0) {}

Bitmap::Bitmap(std::string const& file_name) {
  bitmap_ = static_cast<HBITMAP>(::LoadImage(0, file_name.c_str(), IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION));
}

Bitmap::Bitmap(HBITMAP bmp) : bitmap_(bmp) {

}

Bitmap::operator HBITMAP() const {
  return bitmap_;
}