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/***************************************************************************
* KT list view item task implementation. *
* -------------------------------------------------------------------- *
* Copyright (C) 1999, Gary Meyer <gary@meyer.net> *
* -------------------------------------------------------------------- *
* 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. *
***************************************************************************/
#include "chartWidget.h"
#include <QVBoxLayout>
#include <QLinearGradient>
#include <QLabel>
#include <QPainter>
#include <QPen>
#include <QColor>
#include <klocale.h>
#include <kdebug.h>
#include <kglobal.h>
Chart::Chart(QWidget* parent) :
QWidget(parent) {
setSizePolicy(QSizePolicy::Minimum, QSizePolicy::MinimumExpanding);
memoryInfos = NULL;
freeMemoryLabel = NULL;
}
void Chart::setMemoryInfos(t_memsize* memoryInfos) {
this->memoryInfos = memoryInfos;
}
void Chart::setFreeMemoryLabel(QLabel* freeMemoryLabel) {
this->freeMemoryLabel = freeMemoryLabel;
}
/* Graphical Memory Display */
bool Chart::drawChart(t_memsize total, const QList<t_memsize>& used, const QList<QColor>& colors, const QList<QString>& texts) {
QPainter paint(this);
QPen pen(QColor(0, 0, 0));
paint.setPen(pen);
if (total == NO_MEMORY_INFO) {
paint.fillRect(1, 1, width() - 2, height() - 2, QBrush(QColor(128, 128, 128)));
paint.setPen(pen);
paint.drawRect(rect());
freeMemoryLabel->setText(i18n("Not available."));
return false;
}
int startline = height()-2;
int percent, localheight;
t_memsize last_used = 0;
for (int count = used.size()-1; count >=0; --count) {
last_used = used.at(count);
QColor color = colors.at(count);
QString text = texts.at(count);
percent = (((qint64)last_used) * 100) / total;
if (count)
localheight = ((height()-2) * percent) / 100;
else
localheight = startline;
//kDebug() << "Count : " << count << " Percent : " << percent << "%" << " Localheight:" << localheight << endl;
if (localheight>0) {
QLinearGradient gradient(QPointF(1, startline), QPointF(width()-2, -localheight));
QColor endProgressColor(0xFF, 0xFF, 0xFF, 100);
gradient.setColorAt(0, color);
gradient.setColorAt(1, endProgressColor);
paint.fillRect(1, startline, width()-2, -localheight, gradient);
//paint.fillRect(1, startline, width()-2, -localheight, color);
if (localheight >= SPACING) {
paint.drawText(0, startline-localheight, width(), localheight, Qt::AlignCenter | Qt::TextWordWrap, QString("%1 %2%").arg(text).arg(percent));
}
}
startline -= localheight;
}
// draw surrounding box
QRect r = rect();
qDrawShadePanel(&paint, r.x(), r.y(), r.width(), r.height(), palette(), true, 1);
freeMemoryLabel->setText(i18n("%1 free", formattedUnit(last_used)));
return true;
}
QString Chart::formattedUnit(t_memsize value) {
const KLocale* locale = KGlobal::locale();
const double multiplier = (locale->binaryUnitDialect() == KLocale::MetricBinaryDialect) ? 1000 : 1024;
if (value > (multiplier * multiplier))
if (value > (multiplier * multiplier * multiplier))
return locale->formatByteSize(value, 2, KLocale::DefaultBinaryDialect, KLocale::UnitGigaByte);
else
return locale->formatByteSize(value, 2, KLocale::DefaultBinaryDialect, KLocale::UnitMegaByte);
else
return locale->formatByteSize(value, 2, KLocale::DefaultBinaryDialect, KLocale::UnitKiloByte);
}
ChartWidget::ChartWidget(const QString& title, const QString& hint, Chart* chartImplementation, QWidget* parent) :
QWidget(parent) {
QVBoxLayout* mainLayout = new QVBoxLayout(this);
titleLabel = new QLabel("<strong>" + title + "</strong>", this);
titleLabel->setAlignment(Qt::AlignHCenter);
titleLabel->setToolTip(hint);
mainLayout->addWidget(titleLabel);
chart = chartImplementation;
chart->setToolTip(hint);
mainLayout->addWidget(chart);
freeMemoryLabel = new QLabel("", this);
freeMemoryLabel->setAlignment(Qt::AlignHCenter);
freeMemoryLabel->setToolTip(hint);
mainLayout->addWidget(freeMemoryLabel);
chart->setFreeMemoryLabel(freeMemoryLabel);
}
void ChartWidget::setMemoryInfos(t_memsize* memoryInfos) {
chart->setMemoryInfos(memoryInfos);
}
void ChartWidget::refresh() {
//The update() method will launch paintEvent() automatically
chart->update();
}
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