git.maemo.org Git - keepassx/blob - src/dialogs/CollectEntropyDlg.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2006 by Tarek Saidi                                *
   3  *   tarek.saidi@arcor.de                                                  *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; version 2 of the License.               *
   8
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21
  22 #include "CollectEntropyDlg.h"
  23
  24
  25 CollectEntropyDlg::CollectEntropyDlg(QWidget* parent):QDialog(parent){
  26         setupUi(this);
  27         resize(layout()->closestAcceptableSize(this,QSize(0,0)));
  28         setMinimumSize(size());
  29         setMaximumSize(size());
  30         createBanner(&BannerPixmap,getPixmap("dice"),tr("Entropy Collection"),width());
  31         KeyEntropyBuffer=new unsigned char[105];
  32         MouseEntropyBuffer=new quint16[210];
  33         KeyCounter=0;
  34         MouseCounter=0;
  35         QTimer* timer=new QTimer(this);
  36         connect(timer,SIGNAL(timeout()),this,SLOT(trackMousePos()));
  37         timer->setInterval(50);
  38         timer->start();
  39         ReseedDone=false;
  40 }
  41
  42 CollectEntropyDlg::~CollectEntropyDlg(){
  43         delete [] KeyEntropyBuffer;
  44         delete [] MouseEntropyBuffer;
  45 }
  46
  47 void CollectEntropyDlg::paintEvent(QPaintEvent *event){
  48         QDialog::paintEvent(event);
  49         QPainter painter(this);
  50         painter.setClipRegion(event->region());
  51         painter.drawPixmap(QPoint(0,0),BannerPixmap);
  52 }
  53
  54 void CollectEntropyDlg::trackMousePos(){
  55         QPoint p=QCursor::pos();
  56         if(LastPos-p==QPoint(0,0))return;
  57         LastPos=p;
  58         if(MouseCounter==105 || ReseedDone)return;
  59         MouseEntropyBuffer[2*MouseCounter]=p.x();
  60         MouseEntropyBuffer[2*MouseCounter+1]=p.y();
  61         MouseCounter++;
  62         updateProgress();
  63 }
  64
  65 void CollectEntropyDlg::keyReleaseEvent(QKeyEvent* event ){
  66         QDialog::keyReleaseEvent(event);
  67         if(KeyCounter==105 || ReseedDone)return;
  68         KeyEntropyBuffer[KeyCounter]=event->key();
  69         KeyCounter++;
  70         updateProgress();
  71 }
  72
  73 void CollectEntropyDlg::updateProgress(){
  74         if(4*KeyCounter+4*MouseCounter>=420){
  75                 progressBar->setValue(420);
  76                 ReseedDone=true;
  77                 reseedStrongPool((quint8*)MouseEntropyBuffer,4*MouseCounter,KeyEntropyBuffer,KeyCounter);
  78                 Animation->stop();
  79                 stackedWidget->setCurrentIndex(1);
  80         }
  81         else
  82                 progressBar->setValue(4*KeyCounter+4*MouseCounter);
  83
  84 }
  85
  86 void CollectEntropyDlg::showEvent(QShowEvent* event){
  87         if(!event->spontaneous()){
  88                 Animation->start();
  89         }
  90 }