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317 lines
7.9 KiB
C++
317 lines
7.9 KiB
C++
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/*
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* memory.cpp
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*
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* Copyright (C) 2008 Ivo Anjo <knuckles@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "memory.h"
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#include <QStringList>
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#include <QGroupBox>
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#include <QLayout>
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#include <QPainter>
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#include <QPixmap>
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#include <QVBoxLayout>
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#include <QHBoxLayout>
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#include <QtGui/qbrush.h>
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#include <QTreeWidget>
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#include <kaboutdata.h>
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#include <kdialog.h>
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#include <kdebug.h>
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#include <sys/param.h> /* for BSD */
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#include <klocale.h>
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#include <kglobal.h>
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#include <KPluginFactory>
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#include <KPluginLoader>
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#include "chartWidget.h"
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#include "physicalMemoryChart.h"
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#include "totalMemoryChart.h"
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#include "swapMemoryChart.h"
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/*
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all fetchValues()-functions should put either
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their results _OR_ the value NO_MEMORY_INFO into memoryInfos[]
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*/
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static t_memsize memoryInfos[MEM_LAST_ENTRY];
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/******************/
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/* Implementation */
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/******************/
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static QLabel *memorySizeLabels[MEM_LAST_ENTRY][2];
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K_PLUGIN_FACTORY(KCMMemoryFactory,
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registerPlugin<KCMMemory>();
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)
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K_EXPORT_PLUGIN(KCMMemoryFactory("kcm_memory"))
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KCMMemory::KCMMemory(QWidget *parent, const QVariantList &) :
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KCModule(KCMMemoryFactory::componentData(), parent) {
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KAboutData *about = new KAboutData(I18N_NOOP("kcm_memory"), 0,
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ki18n("KDE Panel Memory Information Control Module"),
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0, KLocalizedString(), KAboutData::License_GPL,
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ki18n("(c) 1998 - 2002 Helge Deller"));
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about->addAuthor(ki18n("Helge Deller"), KLocalizedString(), "deller@gmx.de");
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setAboutData(about);
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QString title, initial_str;
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setButtons(Help);
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QVBoxLayout *top = new QVBoxLayout(this);
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top->setMargin(0);
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top->setSpacing(1);
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QGroupBox* informationGroup = initializeText();
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top->addWidget(informationGroup, 1);
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// Now the Graphics
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QGroupBox* graphicsGroup = initializeCharts();
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top->addWidget(graphicsGroup, 2);
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timer = new QTimer(this);
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timer->start(100);
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connect(timer, SIGNAL(timeout()), this, SLOT(updateDatas()));
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updateDatas();
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}
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KCMMemory::~KCMMemory() {
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/* stop the timer */
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timer->stop();
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}
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QString KCMMemory::quickHelp() const {
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return i18n("This display shows you the current memory usage of your system."
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" The values are updated on a regular basis and give you an"
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" overview of the physical and virtual memory being used.");
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}
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QGroupBox* KCMMemory::initializeText() {
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QGroupBox* informationGroup = new QGroupBox(i18n("Memory"));
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QHBoxLayout *hbox = new QHBoxLayout(informationGroup);
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/* stretch the left side */
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hbox->addStretch();
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QString title;
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//TODO Use the more smart QGridLayout !!!
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/* first create the Informationtext-Widget */
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QVBoxLayout *vbox = new QVBoxLayout();
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hbox->addLayout(vbox);
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vbox->setSpacing(0);
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for (int i = TOTAL_MEM; i < MEM_LAST_ENTRY; ++i) {
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switch (i) {
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case TOTAL_MEM:
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title = i18n("Total physical memory:");
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break;
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case FREE_MEM:
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title = i18n("Free physical memory:");
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break;
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#if !defined(Q_OS_SOLARIS) && !defined(Q_OS_NETBSD) && !defined(Q_OS_OPENBSD)
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case SHARED_MEM:
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title = i18n("Shared memory:");
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break;
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case BUFFER_MEM:
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title = i18n("Disk buffers:");
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break;
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#else
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case ACTIVE_MEM:
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title = i18n("Active memory:");
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break;
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case INACTIVE_MEM:
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title = i18n("Inactive memory:");
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break;
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#endif
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case CACHED_MEM:
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title = i18n("Disk cache:");
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break;
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case SWAP_MEM:
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vbox->addSpacing(SPACING);
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title = i18n("Total swap memory:");
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break;
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case FREESWAP_MEM:
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title = i18n("Free swap memory:");
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break;
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default:
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title = "";
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break;
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};
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QLabel* labelWidget = new QLabel(title, this);
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labelWidget->setTextInteractionFlags(Qt::TextSelectableByMouse);
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labelWidget->setAlignment(Qt::AlignLeft);
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vbox->addWidget(labelWidget);
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}
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vbox->addStretch();
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/* then the memory-content-widgets */
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for (int j = 0; j < 2; j++) {
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vbox = new QVBoxLayout();
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hbox->addLayout(vbox);
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vbox->setSpacing(0);
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for (int i = TOTAL_MEM; i < MEM_LAST_ENTRY; ++i) {
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if (i == SWAP_MEM)
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vbox->addSpacing(SPACING);
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QLabel* labelWidget = new QLabel(this);
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labelWidget->setTextInteractionFlags(Qt::TextSelectableByMouse);
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labelWidget->setAlignment(Qt::AlignRight);
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memorySizeLabels[i][j] = labelWidget;
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vbox->addWidget(labelWidget);
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}
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vbox->addStretch();
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}
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/* stretch the right side */
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hbox->addStretch();
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return informationGroup;
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}
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QGroupBox* KCMMemory::initializeCharts() {
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QGroupBox* chartsGroup = new QGroupBox(i18n("Charts"));
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QHBoxLayout* chartsLayout = new QHBoxLayout(chartsGroup);
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chartsLayout->setSpacing(1);
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chartsLayout->setMargin(1);
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//chartsLayout->addStretch(1);
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totalMemory = new ChartWidget(i18n("Total Memory"),
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i18n("This graph gives you an overview of the "
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"<b>total sum of physical and virtual memory</b> "
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"in your system."),
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new TotalMemoryChart(this), this);
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chartsLayout->addWidget(totalMemory);
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chartsLayout->addSpacing(SPACING);
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physicalMemory = new ChartWidget(i18n("Physical Memory"),
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i18n("This graph gives you an overview of "
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"the <b>usage of physical memory</b> in your system."
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"<p>Most operating systems (including Linux) "
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"will use as much of the available physical "
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"memory as possible as disk cache, "
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"to speed up the system performance.</p>"
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"<p>This means that if you have a small amount "
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"of <b>Free Physical Memory</b> and a large amount of "
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"<b>Disk Cache Memory</b>, your system is well "
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"configured.</p>"),
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new PhysicalMemoryChart(this), this);
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chartsLayout->addWidget(physicalMemory);
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chartsLayout->addSpacing(SPACING);
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swapMemory = new ChartWidget(i18n("Swap Space"),
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i18n("<p>The swap space is the <b>virtual memory</b> "
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"available to the system.</p> "
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"<p>It will be used on demand and is provided "
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"through one or more swap partitions and/or swap files.</p>"),
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new SwapMemoryChart(this), this);
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chartsLayout->addWidget(swapMemory);
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//chartsLayout->addStretch(1);
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return chartsGroup;
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}
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void KCMMemory::updateDatas() {
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/* get the Information from memory_linux, memory_fbsd */
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fetchValues();
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updateMemoryText();
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updateMemoryGraphics();
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}
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void KCMMemory::updateMemoryText() {
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/* update the byte-strings */
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for (int i = TOTAL_MEM; i < MEM_LAST_ENTRY; i++) {
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QLabel* label = memorySizeLabels[i][0];
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if (memoryInfos[i] == NO_MEMORY_INFO)
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label->clear();
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else
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label->setText(i18np("1 byte =", "%1 bytes =", memoryInfos[i]));
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}
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/* update the MB-strings */
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for (int i = TOTAL_MEM; i < MEM_LAST_ENTRY; i++) {
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QLabel* label = memorySizeLabels[i][1];
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label->setText((memoryInfos[i] != NO_MEMORY_INFO) ? Chart::formattedUnit(memoryInfos[i]) : i18n("Not available."));
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}
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}
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void KCMMemory::updateMemoryGraphics() {
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totalMemory->setMemoryInfos(memoryInfos);
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totalMemory->refresh();
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physicalMemory->setMemoryInfos(memoryInfos);
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physicalMemory->refresh();
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swapMemory->setMemoryInfos(memoryInfos);
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swapMemory->refresh();
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}
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/* Include system-specific code */
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#ifdef Q_OS_LINUX
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#include "memory_linux.cpp"
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#elif defined(Q_OS_SOLARIS)
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#include "memory_solaris.cpp"
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#elif defined(Q_OS_FREEBSD) || defined(Q_OS_DRAGONFLY)
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#include "memory_fbsd.cpp"
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#elif defined(Q_OS_NETBSD) || defined(Q_OS_OPENBSD)
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#include "memory_netbsd.cpp"
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#else
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/* Default for unsupported systems */
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void KCMMemory::fetchValues() {
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int i;
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for (i = TOTAL_MEM; i < MEM_LAST_ENTRY; ++i) {
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memoryInfos[i] = NO_MEMORY_INFO;
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}
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}
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#endif
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#include "moc_memory.cpp"
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