/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\**************************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG_H

#ifdef HAVE_WGL

#include <windows.h>
#include <Inventor/errors/SoDebugError.h>
#include "SoOffscreenWGLData.h"

// Pixels-pr-mm.
SbVec2f
SoOffscreenWGLData::getResolution(void)
{
  HDC devctx = CreateCompatibleDC(NULL);
  if (devctx == NULL) {
    SoDebugError::postWarning("SoOffscreenWGLData::getResolution",
                              "Couldn't create a device context.");
    return SbVec2f(72.0f / 25.4f, 72.0f / 25.4f); // fall back to 72dpi
  }
  float resx = (float)GetDeviceCaps(devctx, LOGPIXELSX);
  float resy = (float)GetDeviceCaps(devctx, LOGPIXELSY);
  (void)DeleteDC(devctx);

  return SbVec2f(resx / 25.4f, resy / 25.4f);
}

#endif // HAVE_WGL
