--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/perfmon/ui/hb/app/src/graphdatacontainer.cpp Tue Aug 31 15:15:20 2010 +0300
@@ -0,0 +1,188 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include "graphdatacontainer.h"
+#include "enginewrapper.h"
+
+#include <QPainter>
+#include <QFontMetrics>
+
+const int amountOfMicroSecondsFitsScreen = 20 * 1000000;
+const int microToSecondMultiplier = 1000000;
+
+GraphDataContainer::GraphDataContainer(const EngineWrapper& engine, QGraphicsItem *parent) :
+ DataContainer(engine, parent)
+{
+ HbFontSpec spec(HbFontSpec::Secondary);
+ mFont = spec.font();
+ mFont.setPixelSize(12);
+}
+
+void GraphDataContainer::paint (QPainter *painter,
+ const QStyleOptionGraphicsItem *option,
+ QWidget *widget)
+{
+ Q_UNUSED(option);
+ Q_UNUSED(widget);
+
+ // set proper font and prepare font metrics for text width / height calculation
+ painter->setFont(mFont);
+ QFontMetricsF metrics(mFont);
+
+ // fill background with black color
+ painter->fillRect(rect(), Qt::black);
+
+ // calculate time factor
+ qreal scaleFactor = rect().width() / (qreal) amountOfMicroSecondsFitsScreen;
+
+ // calculate area height which is used to draw the grpahs
+ qreal drawAreaHeight = rect().height() - 2 * metrics.height();
+
+
+ const QList<SampleEntry> sampleEntries = engine().sampleEntries();
+
+ // check if sample array has been constructed
+ if (sampleEntries.length())
+ {
+ // draw vertical time lines first
+ int verticalBarPeriodInSecs = engine().settings().graphVerticalBarPeriod();
+
+ if (verticalBarPeriodInSecs >= 1 && sampleEntries.first().sampleCount() > 0)
+ {
+ // get time from the first sample
+ const SampleData& firstSample = sampleEntries.first().sample(0);
+ qint64 currentMicroSeconds = firstSample.mTimeFromStart;
+
+ // calculate amount of microseconds exceeding value by using the modulo operator
+ int remainderInMicroSeconds = currentMicroSeconds % (verticalBarPeriodInSecs * 1000000);
+
+ // calculate first x pos
+ qreal vbarXpos = rect().width() - (remainderInMicroSeconds * scaleFactor);
+
+ // calculate the amount in seconds
+ int barSeconds = (currentMicroSeconds - remainderInMicroSeconds) / microToSecondMultiplier;
+
+ // continue drawing periodically the vertical lines
+ while (vbarXpos >= 0 && barSeconds >= 0)
+ {
+ // draw vertical line
+ painter->setPen(Qt::darkRed);
+ painter->drawLine(QPointF(vbarXpos, metrics.height() + 1),
+ QPointF(vbarXpos, rect().height() - metrics.height()));
+
+ // draw seconds value
+ painter->setPen(Qt::darkGray);
+ QString secsText = QString("%1s").arg(barSeconds);
+ QPointF secsPos(vbarXpos - metrics.width(secsText) / 2,
+ rect().height());
+ painter->drawText(secsPos, secsText);
+
+ // calculate new position
+ vbarXpos -= verticalBarPeriodInSecs * 1000000 * scaleFactor;
+ barSeconds -= verticalBarPeriodInSecs;
+ }
+ }
+
+ // draw the basic grid
+ painter->setPen(Qt::darkGray);
+
+ qreal axisY = metrics.height();
+ painter->drawLine(QPointF(0, axisY), QPointF(rect().width(), axisY)); // upper line
+ painter->drawText(QPointF(0, axisY), tr("100%"));
+
+ axisY = rect().height() / 2;
+ painter->drawLine(QPointF(0, axisY), QPointF(rect().width(), axisY)); // mid line
+ painter->drawText(QPointF(0, axisY), tr("50%"));
+
+ axisY = rect().height() - metrics.height();
+ painter->drawLine(QPointF(0, axisY), QPointF(rect().width(), axisY)); // bottom line
+ painter->drawText(QPointF(0, axisY), tr("0%"));
+
+ int c = 0;
+ // draw graphs for each sampled type
+ for (int i=0; i<sampleEntries.length(); i++)
+ {
+ // check if this setting has been enabled and it has some data
+ if (engine().settings().graphSources().isEnabled(i) &&
+ sampleEntries.at(i).sampleCount() > 0)
+ {
+ // set pen color for the graph
+ painter->setPen(sampleEntries.at(i).graphColor());
+
+ // remember the position where drawing started
+ qreal currentXPos(rect().width()); // start drawing from right
+ qreal currentYPos(0.);
+
+ // draw samples
+ for (int j=0; j<sampleEntries.at(i).sampleCount()-1; j++)
+ {
+ const SampleData& currentSample = sampleEntries.at(i).sample(j);
+ const SampleData& previousSample = sampleEntries.at(i).sample(j+1);
+
+ // calculate X position for previous (j+1)
+ qreal previousXPos = currentXPos -
+ qAbs(previousSample.mTimeFromStart - currentSample.mTimeFromStart) * scaleFactor;
+
+
+ // calculate initial Y position
+ if (j==0)
+ {
+ currentYPos = currentSample.mSize > 0 ?
+ drawAreaHeight * currentSample.mFree / currentSample.mSize + metrics.height() :
+ rect().height() - metrics.height();
+ }
+
+ // calculate Y position for previous (j+1)
+ qreal previousYPos = previousSample.mSize > 0 ?
+ drawAreaHeight * previousSample.mFree / previousSample.mSize + metrics.height() :
+ rect().height() - metrics.height();
+
+
+ // draw a line between the previous and current
+ painter->drawLine(QPointF(previousXPos, previousYPos),
+ QPointF(currentXPos, currentYPos));
+
+ // draw current value in %
+ if (j==0) // draw the value of first sample
+ {
+ qreal perc = currentSample.mSize > 0 ?
+ 100. - 100. * currentSample.mFree / currentSample.mSize : 0;
+ QString percText = QString ("%1 %2%").
+ arg(sampleEntries.at(i).description()).
+ arg(perc, 0, 'f', 0);
+
+ painter->drawText(QPointF(0, metrics.height() * (c + 2)),
+ percText);
+ c++;
+ }
+
+
+ // stop drawing if we have run out of space
+ if (previousXPos < 0)
+ break;
+
+ // remeber previous values
+ currentXPos = previousXPos;
+ currentYPos = previousYPos;
+ }
+
+
+ }
+ }
+
+ }
+}