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/***************************************************************************
* Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at) and *
* and Patrice Tremblay *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include "statusbarspaceinfo.h"
#include <qpainter.h>
#include <qtimer.h>
#include <kglobalsettings.h>
#include <kdiskfreesp.h>
#include <klocale.h>
#include <kio/job.h>
StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget* parent) :
QWidget(parent),
m_gettingSize(false),
m_kBSize(0),
m_kBAvailable(0)
{
setMinimumWidth(200);
// Update the space information each 10 seconds. Polling is useful
// here, as files can be deleted/added outside the scope of Dolphin.
QTimer* timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(refresh()));
timer->start(10000);
}
StatusBarSpaceInfo::~StatusBarSpaceInfo()
{
}
void StatusBarSpaceInfo::setURL(const KURL& url)
{
m_url = url;
refresh();
update();
}
void StatusBarSpaceInfo::paintEvent(QPaintEvent* /* event */)
{
QPainter painter(this);
const int barWidth = width();
const int barTop = 2;
const int barHeight = height() - 4;
QString text;
const int widthDec = 3; // visual decrement for the available width
const QColor c1 = colorGroup().background();
const QColor c2 = KGlobalSettings::buttonTextColor();
const QColor frameColor((c1.red() + c2.red()) / 2,
(c1.green() + c2.green()) / 2,
(c1.blue() + c2.blue()) / 2);
painter.setPen(frameColor);
const QColor backgrColor = KGlobalSettings::baseColor();
painter.setBrush(backgrColor);
painter.drawRect(QRect(0, barTop + 1 , barWidth - widthDec, barHeight));
if ((m_kBSize > 0) && (m_kBAvailable > 0)) {
// draw 'used size' bar
painter.setPen(Qt::NoPen);
painter.setBrush(progressColor(backgrColor));
int usedWidth = barWidth - static_cast<int>((m_kBAvailable *
static_cast<float>(barWidth)) / m_kBSize);
const int left = 1;
int right = usedWidth - (widthDec + 1);
if (right < left) {
right = left;
}
painter.drawRect(QRect(left, barTop + 2, right, barHeight - 2));
text = i18n("%1 free")
.arg(KIO::convertSizeFromKB(m_kBAvailable));
}
else {
if (m_gettingSize) {
text = i18n("Getting size...");
}
else {
text = "";
QTimer::singleShot(0, this, SLOT(hide()));
}
}
// draw text (usually 'Y GB free')
painter.setPen(KGlobalSettings::textColor());
painter.drawText(QRect(1, 1, barWidth - 2, barHeight + 4),
Qt::AlignHCenter | Qt::AlignVCenter | Qt::WordBreak,
text);
}
void StatusBarSpaceInfo::slotFoundMountPoint(const unsigned long& kBSize,
const unsigned long& /* kBUsed */,
const unsigned long& kBAvailable,
const QString& /* mountPoint */)
{
m_gettingSize = false;
m_kBSize = kBSize;
m_kBAvailable = kBAvailable;
// Bypass a the issue (?) of KDiskFreeSp that for protocols like
// FTP, SMB the size of root partition is returned.
// TODO: check whether KDiskFreeSp is buggy or Dolphin uses it in a wrong way
const QString protocol(m_url.protocol());
if (!protocol.isEmpty() && (protocol != "file")) {
m_kBSize = 0;
m_kBAvailable = 0;
}
update();
}
void StatusBarSpaceInfo::slotDone()
{
m_gettingSize = false;
if ((m_kBSize > 0) && (m_kBAvailable > 0)) {
show();
}
update();
}
void StatusBarSpaceInfo::refresh()
{
m_gettingSize = true;
m_kBSize = 0;
m_kBAvailable = 0;
const QString mountPoint(KIO::findPathMountPoint(m_url.path()));
KDiskFreeSp* job = new KDiskFreeSp(this);
connect(job, SIGNAL(foundMountPoint(const unsigned long&,
const unsigned long&,
const unsigned long&,
const QString& )),
this, SLOT(slotFoundMountPoint(const unsigned long&,
const unsigned long&,
const unsigned long&,
const QString& )));
connect(job, SIGNAL(done()),
this, SLOT(slotDone()));
job->readDF(mountPoint);
}
QColor StatusBarSpaceInfo::progressColor(const QColor& bgColor) const
{
QColor color = KGlobalSettings::buttonBackground();
// assure that enough contrast is given between the background color
// and the progressbar color
int bgRed = bgColor.red();
int bgGreen = bgColor.green();
int bgBlue = bgColor.blue();
const int backgrBrightness = qGray(bgRed, bgGreen, bgBlue);
const int progressBrightness = qGray(color.red(), color.green(), color.blue());
const int limit = 32;
const int diff = backgrBrightness - progressBrightness;
bool adjustColor = ((diff >= 0) && (diff < limit)) ||
((diff < 0) && (diff > -limit));
if (adjustColor) {
const int inc = (backgrBrightness < 2 * limit) ? (2 * limit) : -limit;
color = QColor(bgRed + inc, bgGreen + inc, bgBlue + inc);
}
return color;
}
#include "statusbarspaceinfo.moc"
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