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/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS. All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include "memorymeter.h"
#include "memorystatus.h"
#include <opie2/otaskbarapplet.h>
#include <qtopia/power.h>
#include <qtopia/config.h>
#include <qtopia/qcopenvelope_qws.h>
#include <qpainter.h>
#include <qtimer.h>
#include <qapplication.h>
#include <qtopia/applnk.h>
using namespace Opie::Ui;
MemoryMeter::MemoryMeter( QWidget *parent )
: QWidget( parent ), memoryView(0)
{
bvsz = QSize();
if ( qApp->desktop()->height() >= 300 )
{
memoryView = new MemoryStatus( 0, WStyle_StaysOnTop | WType_Popup );
memoryView->setFrameStyle( QFrame::Panel | QFrame::Raised );
}
else
{
memoryView = new MemoryStatus( 0 );
memoryView->showMaximized();
}
Config config("MemoryPlugin");
config.setGroup("Warning levels");
low = config.readNumEntry("low", 40);
critical = config.readNumEntry("critical", 20);
startTimer( 10000 );
setFixedWidth(10);
setFixedHeight(AppLnk::smallIconSize());
usageTimer = new QTimer( this );
connect( usageTimer, SIGNAL(timeout()), this, SLOT(usageTimeout()) );
timerEvent(0);
}
MemoryMeter::~MemoryMeter()
{
delete (QWidget *) memoryView;
}
int MemoryMeter::position()
{
return 7;
}
QSize MemoryMeter::sizeHint() const
{
return QSize(10, AppLnk::smallIconSize());
}
bool MemoryMeter::updateMemoryViewGeometry()
{
if (memoryView != 0)
{
QSize sz = memoryView->sizeHint();
if ( sz != bvsz )
{
bvsz = sz;
QRect r(memoryView->pos(), memoryView->sizeHint());
if ( qApp->desktop()->height() >= 300 )
{
QPoint curPos = mapToGlobal( rect().topLeft() );
int lp = qApp->desktop()->width() - memoryView->sizeHint().width();
r.moveTopLeft( QPoint(lp, curPos.y() - memoryView->sizeHint().height()-1) );
}
memoryView->setGeometry(r);
return TRUE;
}
return FALSE;
}
return FALSE;
}
void MemoryMeter::mousePressEvent( QMouseEvent *)
{
if ( memoryView->isVisible() )
{
memoryView->hide();
}
else
{
bvsz = QSize();
updateMemoryViewGeometry();
memoryView->raise();
memoryView->show();
}
}
void MemoryMeter::timerEvent( QTimerEvent * )
{
if (memoryView != 0)
{
// read memory status
percent = (memoryView->percent());
usageTimer->start( 1000 );
}
}
void MemoryMeter::usageTimeout()
{
if (memoryView != 0)
{
percent = (memoryView->percent());
if (updateMemoryViewGeometry() && memoryView->isVisible())
{
memoryView->hide();
memoryView->show();
}
repaint(FALSE);
}
}
void MemoryMeter::paintEvent( QPaintEvent* )
{
QPainter p(this);
QColor c;
QColor darkc;
QColor lightc;
if (percent > low)
c = green;
else if (percent > critical)
c = yellow.dark(110);
else
c = red;
darkc = c.dark(120);
lightc = c.light(160);
//
// To simulate a 3-d memory, we use 4 bands of colour. From left
// to right, these are: medium, light, medium, dark. To avoid
// hardcoding values for band "width", figure everything out on the run.
//
int batt_width; // width of each band
int batt_height; // memory height (not including terminal)
int used_height; // used amount of memory (scanlines)
int batt_yoffset; // top of terminal
int batt_xoffset; // left edge of core
int band_width; // width of colour band
int w = QMIN(height(), width());
band_width = (w-2) / 4;
if ( band_width < 1 )
band_width = 1;
batt_width = 4 * band_width + 2; // +2 for 1 pixel border on both sides
batt_height = height()-2;
batt_xoffset = (width() - batt_width) / 2;
batt_yoffset = (height() - batt_height) / 2;
//
// Memory border. +1 to make space for the terminal at row 0.
//
p.setPen(QColor(80, 80, 80));
p.drawRect(batt_xoffset, batt_yoffset + 1, batt_width, batt_height);
//
// Draw terminal. +1 to take into account the left border.
//
//p.drawLine(batt_xoffset + band_width + 1, batt_yoffset, batt_xoffset + 3 * band_width, batt_yoffset);
batt_height -= 2; // -2 because we don't want to include border
batt_yoffset += 2; // +2 to account for border and terminal
batt_xoffset++;
//
// 100 - percent, since percent is amount remaining, and we draw
// reverse to this.
//
used_height = percent * batt_height / 100;
if (used_height < 0)
used_height = 0;
//
// Drained section.
//
if (used_height != 0)
{
p.setPen(NoPen);
p.setBrush(gray);
p.drawRect(batt_xoffset, batt_yoffset, band_width, used_height);
p.drawRect(batt_xoffset + 2 * band_width, batt_yoffset, band_width, used_height);
p.setBrush(gray/*.light(130)*/);
p.drawRect(batt_xoffset + band_width, batt_yoffset, band_width, used_height);
p.setBrush(gray/*.dark(120)*/);
p.drawRect(batt_xoffset + 3 * band_width, batt_yoffset, band_width, used_height);
}
//
// Unused section.
//
if ( batt_height - used_height > 0 )
{
int unused_offset = used_height + batt_yoffset;
int unused_height = batt_height - used_height;
p.setPen(NoPen);
p.setBrush(c);
p.drawRect(batt_xoffset, unused_offset, band_width, unused_height);
p.drawRect(batt_xoffset + 2 * band_width, unused_offset, band_width, unused_height);
p.setBrush(lightc);
p.drawRect(batt_xoffset + band_width, unused_offset, band_width, unused_height);
p.setBrush(darkc);
p.drawRect(batt_xoffset + 3 * band_width, unused_offset, band_width, unused_height);
}
}
EXPORT_OPIE_APPLET_v1( MemoryMeter )
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