/*
 *      Copyright (C) 2005-2013 Team XBMC
 *      http://xbmc.org
 *
 *  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, 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 XBMC; see the file COPYING.  If not, see
 *  <http://www.gnu.org/licenses/>.
 *
 */

#include "GUIWindowScreensaverDim.h"
#include "guilib/GraphicContext.h"
#include "guilib/GUITexture.h"
#include "Application.h"
#include <climits>

CGUIWindowScreensaverDim::CGUIWindowScreensaverDim(void)
    : CGUIDialog(WINDOW_SCREENSAVER_DIM, "")
{
  m_needsScaling = false;
  m_dimLevel = 100.0f;
  m_animations.push_back(CAnimation::CreateFader(0, 100, 0, 1000, ANIM_TYPE_WINDOW_OPEN));
  m_animations.push_back(CAnimation::CreateFader(100, 0, 0, 1000, ANIM_TYPE_WINDOW_CLOSE));
  m_renderOrder = INT_MAX;
}

CGUIWindowScreensaverDim::~CGUIWindowScreensaverDim(void)
{
}

void CGUIWindowScreensaverDim::UpdateVisibility()
{
  m_dimLevel = g_application.GetDimScreenSaverLevel();
  if (m_dimLevel)
    Show();
  else
    Close();
}

void CGUIWindowScreensaverDim::Process(unsigned int currentTime, CDirtyRegionList &dirtyregions)
{
  CGUIDialog::Process(currentTime, dirtyregions);
  m_renderRegion.SetRect(0, 0, (float)g_graphicsContext.GetWidth(), (float)g_graphicsContext.GetHeight());
}

void CGUIWindowScreensaverDim::Render()
{
  // draw a translucent black quad - fading is handled by the window animation
  color_t color = ((color_t)(m_dimLevel * 2.55f) & 0xff) << 24;
  color = g_graphicsContext.MergeAlpha(color);
  CRect rect(0, 0, (float)g_graphicsContext.GetWidth(), (float)g_graphicsContext.GetHeight());
  CGUITexture::DrawQuad(rect, color);
  CGUIDialog::Render();
}
