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/***************************************************************************
* Copyright (C) 2005 by Hugo Parente Lima *
* [email protected] *
* *
* 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. *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include "chart.h"
#include <qpainter.h>
#include <qbrush.h>
Chart::Chart(QWidget* parent, const double* uploadBuffer, const double* downloadBuffer, int bufferSize, const int* ptr, const double* maxspeed) : QWidget(parent), mUplBuffer(uploadBuffer), mDldBuffer(downloadBuffer), mBufferSize(bufferSize), mPtr(ptr), mMaxSpeed(maxspeed) {
setWFlags(Qt::WNoAutoErase);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
}
void Chart::paintEvent(QPaintEvent*) {
QPainter paint(this);
paint.setBackgroundColor(Qt::black);
paint.setBackgroundMode(Qt::OpaqueMode);
QBrush brush(QColor(0x33, 0x33, 0x33), CrossPattern);
paint.fillRect(0, 0, width(), height(), brush);
const double step = width()/double(mBufferSize);
const int HEIGHT = height() - 1;
int x;
int lastX = x = width();
int lastRxY = HEIGHT - int(HEIGHT * (mDldBuffer[*mPtr]/(*mMaxSpeed)));
int lastTxY = HEIGHT - int(HEIGHT * (mUplBuffer[*mPtr]/(*mMaxSpeed)));
int count = 0;
for (int i = *mPtr; count < mBufferSize; i--) {
if (i < 0)
i = mBufferSize-1;
int rxY = HEIGHT - int(HEIGHT * (mDldBuffer[i]/(*mMaxSpeed)));
int txY = HEIGHT - int(HEIGHT * (mUplBuffer[i]/(*mMaxSpeed)));
paint.setPen(Qt::green);
paint.drawLine(lastX, lastRxY, x, rxY);
paint.setPen(Qt::red);
paint.drawLine(lastX, lastTxY, x, txY);
//qDebug("%d => %d", i, int(mSpeedHistoryRx[i]));
lastX = x;
lastRxY = rxY;
lastTxY = txY;
count++;
x = width() - int(step*(count+1));
}
}
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