File indexing completed on 2024-04-28 04:02:10

 /*
     This file is part of the KDE games kwin4 program
     SPDX-FileCopyrightText: 2006 Martin Heni <kde@heni-online.de>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "reflectiongraphicsscene.h"
 
 // own
 #include "kfourinline_debug.h"
 #include "kwin4global.h"
 // Qt
 #include <QElapsedTimer>
 #include <QGraphicsItem>
 #include <QPainter>
 #include <QRectF>
 
 // How many time measurements for average
 #define MEASUREMENT_LIST_SIZE 50
 // How many warnings until reflections are switched off
 #define WARNING_MAX_COUNT 10
 
 // Construct a new scene
 ReflectionGraphicsScene::ReflectionGraphicsScene(int updateTime, QObject *parent)
     : QGraphicsScene(parent)
 {
     Q_UNUSED(updateTime)
     // Initialize
     mBackground = true;
 }
 
 // Destruct scene
 ReflectionGraphicsScene::~ReflectionGraphicsScene()
 {
 }
 
 // QGV basic function to draw all items of a scene
 void ReflectionGraphicsScene::drawItems(QPainter *painter, int numItems, QGraphicsItem *items[], const QStyleOptionGraphicsItem options[], QWidget *widget)
 {
     QElapsedTimer time;
     time.start();
 
     // No reflections call parent function
     QGraphicsScene::drawItems(painter, numItems, items, options, widget);
 
     /*
     // ==========================================================================
     // Update time measurement and display
     int elapsed = time.elapsed();
     mDrawTimes.append(elapsed);
     if (mDrawTimes.size() > MEASUREMENT_LIST_SIZE) mDrawTimes.removeFirst();
     double avg = 0.0;
     for (int i=0; i<mDrawTimes.size(); i++) avg += mDrawTimes[i];
     avg /= mDrawTimes.size();
 
 
     if (global_debug > 0)
        mFrameSprite->setPlainText(QString("Draw: %1 ms  Average %2 ms  Update: %3 ms").arg(elapsed).arg(int(avg)).arg(mDisplayUpdateTime));
 
      // Disable reflections on slow computers
      if (mDrawTimes.size() >= MEASUREMENT_LIST_SIZE )
      {
        if (avg > 2*mUpdateTime )
        {
          mUpdateWarning++;
          mDrawTimes.clear();
          qCDebug(KFOURINLINE_LOG) << mUpdateWarning << ". slow computer reflection theme warning";
        }
        else
        {
          mUpdateWarning = 0;
        }
      }
      if (mUpdateWarning >= WARNING_MAX_COUNT )
      {
        update();
        qCDebug(KFOURINLINE_LOG) << "DISABLING REFLECTIONS DUE TO POOR COMPUTER PERFORMANCE";
      }
     // ==========================================================================
     */
 }
 
 void ReflectionGraphicsScene::drawBackground(QPainter *painter, const QRectF &rect)
 {
     if (mBackground)
         QGraphicsScene::drawBackground(painter, rect);
 }
 
 #include "moc_reflectiongraphicsscene.cpp"