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ktorrent/plugins/stats/ChartDrawer.cc

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/***************************************************************************
* Copyright © 2007 by Krzysztof Kundzicz *
* athantor@gmail.com *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "ChartDrawer.h"
#ifdef USE_SOLARIS
#include <ieeefp.h>
int isinf(double x) { return !finite(x) && x==x; }
#endif
namespace kt {
ChartDrawer::ChartDrawer(QWidget *p, wgtsize_t x_max, wgtsize_t y_max, bool autom, const QString & uname) : QWidget(p), mXMax(x_max), mYMax(y_max), mAutoMax(autom),
mUnitName(uname), mMMode(MaxModeExact)
{
setBackgroundColor("white");
}
ChartDrawer::~ChartDrawer()
{
QToolTip::remove(this);
}
ChartDrawer::wgtsize_t ChartDrawer::GetXMax() const
{
return mXMax;
}
ChartDrawer::wgtsize_t ChartDrawer::GetYMax() const
{
return mYMax;
}
void ChartDrawer::SetXMax(const wgtsize_t x)
{
mXMax = x;
for(size_t i = 0; i < mEls.size(); i++)
{
mEls[i].pmVals -> resize(x, 0.0);
}
}
void ChartDrawer::SetYMax(const wgtsize_t y)
{
mYMax = y;
}
inline ChartDrawer::wgtsize_t ChartDrawer::GetYScale() const
{
return height() / 8;
}
inline ChartDrawer::wgtunit_t ChartDrawer::TrY(const ChartDrawer::wgtunit_t y) const
{
return height() - y;
}
void ChartDrawer::paintEvent ( QPaintEvent *)
{
QPainter pnt( this );
DrawScale(pnt);
DrawFrame(pnt);
DrawChart(pnt);
}
inline ChartDrawer::wgtunit_t ChartDrawer::height() const
{
return QWidget::height() - 15;
}
inline ChartDrawer::wgtunit_t ChartDrawer::width() const
{
return QWidget::width() - 65;
}
void ChartDrawer::DrawFrame(QPainter & rPnt )
{
QPen op = rPnt.pen();
rPnt.setPen(QPen("#000", 3));
rPnt.drawLine(0, TrY(0), width()+3, TrY(0));
rPnt.drawLine(width()+1, TrY(0), width()+1, TrY(QWidget::height()));
QFont oldf(rPnt.font());
QFont newf(oldf);
newf.setWeight(QFont::Bold);
newf.setPointSize(10);
newf.setUnderline(1);
rPnt.setFont(newf);
rPnt.drawText(width() + 30, TrY(-7), mUnitName);
rPnt.setFont(oldf);
rPnt.setPen(op);
}
void ChartDrawer::DrawScale(QPainter & rPnt )
{
if(!mYMax)
{
return;
}
QPen op = rPnt.pen();
QPen ep("#eee", 1, Qt::DashLine);
QPen lp("#666", 2, Qt::DotLine);
QPen tp("#000");
rPnt.setPen(ep);
for(wgtsize_t i = 1; i < width(); i += 10)
{
rPnt.drawLine(i, TrY(0), i, TrY(height()));
}
for(wgtsize_t i = 0; i < height(); i += 10)
{
rPnt.drawLine(0, TrY(i), width(), TrY(i));
}
rPnt.setPen(lp);
rPnt.drawLine(0, TrY(height() - 10), width(), TrY(height() - 10));
rPnt.setPen(tp);
rPnt.drawText(width() + 4, TrY(height() - 10) + 4, QString::number (mYMax));
for(wgtsize_t i = 0; i < height() - 15 ; i += GetYScale())
{
rPnt.setPen(lp);
rPnt.drawLine(0, TrY(i), width(), TrY(i));
rPnt.setPen(tp);
rPnt.drawText(width() + 4, TrY(i) + 4, QString::number ( (mYMax / 8.0 ) * ( i / static_cast<double>(GetYScale() )), 'f', 1 ) );
}
rPnt.setPen(op);
}
void ChartDrawer::DrawChart(QPainter & rPnt)
{
QPen op = rPnt.pen();
uint32_t skip_max = 0;
for(size_t i = 0; i < mEls.size(); i++)
{
rPnt.setPen( *mEls[i].GetPen() );
for(size_t j = 1; j < mEls[i].pmVals -> size() - 1; j++)
{
rPnt.drawLine(
FindXScreenCoords(j-1),
TrY(FindYScreenCoords(mEls[i].pmVals -> at(j-1))),
FindXScreenCoords(j),
TrY(FindYScreenCoords(mEls[i].pmVals -> at(j)))
);
}
//
rPnt.drawLine(
FindXScreenCoords(mEls[i].pmVals -> size() - 2),
TrY(FindYScreenCoords(mEls[i].pmVals -> at(mEls[i].pmVals -> size() - 2))),
width(),
TrY(FindYScreenCoords(mEls[i].pmVals -> at(mEls[i].pmVals -> size() - 1)))
);
// --------------------
// Line on top
// ------------
QPen myop(rPnt.pen());
QPen topl(myop);
topl.setStyle(Qt::DotLine);
rPnt.setPen(topl);
rPnt.drawLine(0, TrY(FindYScreenCoords(mEls[i].pmVals -> at(mEls[i].pmVals -> size() - 1))), width(), TrY(FindYScreenCoords(mEls[i].pmVals -> at(mEls[i].pmVals -> size() - 1))) );
rPnt.setPen(myop);
QFont oldf(rPnt.font());
QFont newf(oldf);
newf.setWeight(QFont::Bold);
newf.setPointSize(8);
rPnt.setFont(newf);
rPnt.drawText(5 + (i * 50), TrY(FindYScreenCoords(mEls[i].pmVals -> at(mEls[i].pmVals -> size() - 1))) + 11, QString::number (mEls[i].pmVals -> at(mEls[i].pmVals -> size() - 1), 'f', 2 ) );
//------------------
// max
//------------------
if(mMarkMax[i])
{
rPnt.setPen(topl);
std::pair<double, size_t> max = mEls[i] . Max();
rPnt.drawLine(
FindXScreenCoords(max.second), TrY(0), FindXScreenCoords(max.second), TrY(height())
);
rPnt.setPen(myop);
rPnt.setFont(newf);
QString maxv(QString::number (max.first, 'f', 2));
if(FindXScreenCoords(max.second) < 35)
{
rPnt.drawText(FindXScreenCoords(max.second) + 5, TrY(height() - (10 * (i - skip_max)) ) + 10, maxv ) ;
} else {
rPnt.drawText(FindXScreenCoords(max.second) - 35 , TrY(height() - (10 * (i - skip_max)) ) + 10, maxv ) ;
}
} else {
skip_max++;
}
rPnt.setFont(oldf);
rPnt.setPen(op);
}
rPnt.setPen(op);
}
inline ChartDrawer::wgtunit_t ChartDrawer::FindXScreenCoords(const double x) const
{
return static_cast<wgtunit_t>((width() / static_cast<double>(mXMax)) * x) ;
}
inline ChartDrawer::wgtunit_t ChartDrawer::FindYScreenCoords(const double y) const
{
return static_cast<wgtunit_t>(((height()) / static_cast<double>(mYMax)) * y) ;
}
void ChartDrawer::EnableAutoMax(bool a)
{
mAutoMax = a;
}
void ChartDrawer::AddValue(const size_t idx, const double val, bool u )
{
if( idx >= mEls.size() )
{
return;
}
ChartDrawerData::val_t::iterator it = mEls[idx].pmVals -> begin();
while(it != mEls[idx] .pmVals -> end() )
{
*it = *(it + 1);
it++;
}
#ifdef USE_SOLARIS
if(isnand(val) || (isinf(val)))
#else
if(std::isnan(val) || (std::isinf(val)))
#endif
{
*(mEls[idx].pmVals -> end() -1) = 0.0;
} else {
*(mEls[idx].pmVals -> end() -1) = val;
}
if(mAutoMax)
{
if( (mMMode == MaxModeTop) && (val > mYMax) )
{
mYMax = static_cast<wgtsize_t>(val) + 3;
} else if(mMMode == MaxModeExact) {
FindSetMax();
}
}
if(u)
{
update();
}
}
void ChartDrawer::AddValues(ChartDrawerData Cdd, const bool max)
{
if(Cdd.pmVals -> size() != mXMax)
{
Cdd.pmVals -> resize(mXMax, 0.0);
}
mEls.push_back(Cdd);
mMarkMax.push_back(max);
MakeLegendTooltip();
}
void ChartDrawer::AddValues(ChartDrawerData Cdd, const size_t idx, const bool max)
{
if(Cdd.pmVals -> size() != mXMax)
{
Cdd.pmVals -> resize(mXMax, 0.0);
}
if(idx >= mEls.size())
{
mEls.push_back(Cdd);
} else {
mEls.insert(mEls.begin() + idx, Cdd);
}
if(idx >= mMarkMax.size())
{
mMarkMax.push_back(max);
} else {
mMarkMax.insert(mMarkMax.begin() + idx, max);
}
MakeLegendTooltip();
}
void ChartDrawer::AddValuesCnt(const QString & rN, const bool max)
{
mEls.push_back(ChartDrawerData(mXMax, rN));
mMarkMax.push_back(max);
MakeLegendTooltip();
}
void ChartDrawer::AddValuesCnt(const QPen & rP, const QString & rN, const bool max)
{
mEls.push_back(ChartDrawerData(rP, mXMax, rN));
mMarkMax.push_back(max);
MakeLegendTooltip();
}
void ChartDrawer::SetUnitName(const QString & rN)
{
mUnitName = rN;
}
QString ChartDrawer::GetUnitName() const
{
return mUnitName;
}
void ChartDrawer::mouseDoubleClickEvent ( QMouseEvent * evt )
{
FindSetMax();
emit DoubleClicked(evt);
}
void ChartDrawer::EnableMaxDrawAt(const size_t at, const bool e)
{
if(at >= mMarkMax.size())
{
return;
}
mMarkMax[at] = e;
}
void ChartDrawer::RemoveValuesCnt(const size_t idx)
{
if(idx >= mEls.size())
{
return;
}
mEls.erase(mEls.begin() + idx);
if(idx <= mMarkMax.size())
{
mMarkMax.erase(mMarkMax.begin() + idx);
}
MakeLegendTooltip();
}
void ChartDrawer::Zero(const size_t idx)
{
if(idx >= mEls.size())
{
return;
}
std::fill(mEls[idx].pmVals -> begin(), mEls[idx].pmVals -> end(), 0.0);
if(mAutoMax)
{
mYMax = 1;
}
}
void ChartDrawer::MakeLegendTooltip()
{
QToolTip::remove(this);
QString helpstr(QString("<b>%1:</b><br><br>").arg(i18n("Legend")));
QMimeSourceFactory* factory = QMimeSourceFactory::defaultFactory();
std::vector<QImage> img;
for(size_t i = 0; i < mEls.size(); i++)
{
img.push_back(QImage(16,16, 32));
img[i].fill(mEls[i].GetPen() -> color().pixel());
for(uint8_t px = 0; px < 16; px++)
{
img[i].setPixel(px, 0, 0); //t
img[i].setPixel(0, px, 0); //l
img[i].setPixel(px, 15, 0); //b
img[i].setPixel(15, px, 0); //r
}
factory->setImage(mEls[i].GetName().replace(' ', '_') + "-" + QString::number(i), img[i]);
helpstr += QString("<img src='%1'>&nbsp;&nbsp;-&nbsp;&nbsp;%2<br>").arg(mEls[i].GetName().replace(" ", "_") + "-" + QString::number(i)).arg( mEls[i].GetName() );
}
QToolTip::add(this, helpstr);
}
void ChartDrawer::FindSetMax()
{
wgtsize_t mymax = 1;
for(val_t::const_iterator it = mEls.begin(); it != mEls.end(); ++it)
{
for(ChartDrawerData::val_t::const_iterator subit = it -> pmVals -> begin(); subit != it -> pmVals -> end(); ++subit)
{
if ( (*subit) > mymax )
{
mymax = static_cast<wgtsize_t>(*subit) + 3;
}
}
}
mYMax = mymax;
}
void ChartDrawer::SetMaxMode(const MaxMode mm)
{
mMMode = mm;
}
ChartDrawer::MaxMode ChartDrawer::GetMaxMode() const
{
return mMMode;
}
} //NS end
#include "ChartDrawer.moc"