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GHOST_DisplayManager.cpp

/**
 * $Id: GHOST_DisplayManager.cpp,v 1.3 2002/11/25 09:52:56 mein Exp $
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

/**

 * $Id: GHOST_DisplayManager.cpp,v 1.3 2002/11/25 09:52:56 mein Exp $
 * Copyright (C) 2001 NaN Technologies B.V.
 * @author  Maarten Gribnau
 * @date    September 21, 2001
 */

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

#include "GHOST_DisplayManager.h"
#include "GHOST_Debug.h"


00048 GHOST_DisplayManager::GHOST_DisplayManager(
      void)
: m_settingsInitialized(false)
{
}


00055 GHOST_DisplayManager::~GHOST_DisplayManager(void)
{
}


GHOST_TSuccess
00061 GHOST_DisplayManager::initialize(
      void)
{
      GHOST_TSuccess success;
      if (!m_settingsInitialized) {
            success = initializeSettings();
            m_settingsInitialized = true;
      }
      else {
            success = GHOST_kSuccess;
      }
      return success;
}


GHOST_TSuccess
00077 GHOST_DisplayManager::getNumDisplays(
      GHOST_TUns8& /*numDisplays*/) const
{
      // Don't know if we have a display...
      return GHOST_kFailure;
}


GHOST_TSuccess
00086 GHOST_DisplayManager::getNumDisplaySettings(
      GHOST_TUns8 display, 
      GHOST_TInt32& numSettings) const
{
      GHOST_TSuccess success;

      GHOST_ASSERT(m_settingsInitialized, "GHOST_DisplayManager::getNumDisplaySettings(): m_settingsInitialized=false");
      GHOST_TUns8 numDisplays;
      success = getNumDisplays(numDisplays);
      if (success == GHOST_kSuccess) {
            if (display < numDisplays) {
                  numSettings = m_settings[display].size();
            }
            else {
                  success = GHOST_kFailure;
            }
      }
      return success;
}


GHOST_TSuccess
00108 GHOST_DisplayManager::getDisplaySetting(
      GHOST_TUns8 display, 
      GHOST_TInt32 index, 
      GHOST_DisplaySetting& setting) const
{
      GHOST_TSuccess success;

      GHOST_ASSERT(m_settingsInitialized, "GHOST_DisplayManager::getNumDisplaySettings(): m_settingsInitialized=false");
      GHOST_TUns8 numDisplays;
      success = getNumDisplays(numDisplays);
      if (success == GHOST_kSuccess) {
            if (display < numDisplays && index < m_settings[display].size()) {
                  setting = m_settings[display][index];
            }
            else {
                  success = GHOST_kFailure;
            }
      }
      return success;
}


GHOST_TSuccess
00131 GHOST_DisplayManager::getCurrentDisplaySetting(
      GHOST_TUns8 /*display*/,
      GHOST_DisplaySetting& /*setting*/) const
{
      return GHOST_kFailure;
}


GHOST_TSuccess
00140 GHOST_DisplayManager::setCurrentDisplaySetting(
      GHOST_TUns8 /*display*/,
      const GHOST_DisplaySetting& /*setting*/)
{
      return GHOST_kFailure;
}


GHOST_TSuccess
00149 GHOST_DisplayManager::findMatch(
      GHOST_TUns8 display, 
      const GHOST_DisplaySetting& setting, 
      GHOST_DisplaySetting& match) const
{
      GHOST_TSuccess success = GHOST_kSuccess;
      GHOST_ASSERT(m_settingsInitialized, "GHOST_DisplayManager::findMatch(): m_settingsInitialized=false");

      int criteria[4] = { setting.xPixels, setting.yPixels, setting.bpp, setting.frequency };
      int capabilities[4];
      double field, score;
      double best = 1e12; // A big number
      int found = 0;

      // Look at all the display modes
      for (int i = 0; (i < (int)m_settings[display].size()); i++) {
            // Store the capabilities of the display device
            capabilities[0] = m_settings[display][i].xPixels;
            capabilities[1] = m_settings[display][i].yPixels;
            capabilities[2] = m_settings[display][i].bpp;
            capabilities[3] = m_settings[display][i].frequency;

            // Match against all the fields of the display settings
            score = 0;
            for (int j = 0; j < 4; j++) {
                  field = capabilities[j] - criteria[j];
                  score += field * field;
            }

            if (score < best) {
                  found = i;
                  best = score;
            }
      }
      
      match = m_settings[display][found];
      
      GHOST_PRINT("GHOST_DisplayManager::findMatch(): settings of match:\n");
      GHOST_PRINT("  setting.xPixels=" << match.xPixels << "\n");
      GHOST_PRINT("  setting.yPixels=" << match.yPixels << "\n");
      GHOST_PRINT("  setting.bpp=" << match.bpp << "\n");
      GHOST_PRINT("  setting.frequency=" << match.frequency << "\n");

      return success;
}


GHOST_TSuccess
00197 GHOST_DisplayManager::initializeSettings(
      void)
{
      GHOST_TUns8 numDisplays;
      GHOST_TSuccess success = getNumDisplays(numDisplays);
      if (success == GHOST_kSuccess) {
            for (GHOST_TUns8 display = 0; (display < numDisplays) && (success == GHOST_kSuccess); display++) {
                  GHOST_DisplaySettings displaySettings;
                  m_settings.push_back(displaySettings);
                  GHOST_TInt32 numSettings;
                  success = getNumDisplaySettings(display, numSettings);
                  if (success == GHOST_kSuccess) {
                        GHOST_TInt32 index;
                        GHOST_DisplaySetting setting;
                        for (index = 0; (index < numSettings) && (success == GHOST_kSuccess); index++) {
                              success = getDisplaySetting(display, index, setting);
                              m_settings[display].push_back(setting);
                        }
                  }
                  else {
                        break;
                  }
            }
      }
      return success;
}

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