plasma-framework/widgets/progressbar.cpp
Dan Meltzer a081559257 Commit initial progress of work to port to qt4.4
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=780654
2008-02-29 17:43:31 +00:00

259 lines
5.5 KiB
C++

/*
* Copyright (C) 2007 Jon de Andres Frias <jondeandres@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, 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 Library 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 "progressbar.h"
#include <QWidget>
#include <QStyleOptionProgressBarV2>
#include <QPainter>
#include <QStyle>
#include <QtGlobal>
#include <QApplication>
#include <kdebug.h>
namespace Plasma
{
class ProgressBar::Private
{
public:
Private() {}
~Private() {}
QString format;
QString text;
Qt::Alignment alignment;
bool invertedAppearance;
bool textVisible;
int maximum;
int minimum;
int value;
int lastPaintedValue;
};
ProgressBar::ProgressBar(Widget *parent)
: Plasma::Widget(parent),
d(new Private)
{
init();
}
ProgressBar::~ProgressBar()
{
delete d;
}
void ProgressBar::init()
{
setAlignment(Qt::AlignLeft);
setFormat(QLatin1String("%p%"));
setInvertedAppearance(false);
setTextVisible(true);
setMinimum(0);
setMaximum(100);
setValue(-1);
d->lastPaintedValue = -1;
}
void ProgressBar::setAlignment(Qt::Alignment alignment)
{
if (d->alignment != alignment) {
d->alignment = alignment;
update();
}
}
Qt::Alignment ProgressBar::alignment() const
{
return d->alignment;
}
void ProgressBar::setFormat(const QString &format)
{
if (d->format != format) {
d->format = format;
update();
}
}
QString ProgressBar::format() const
{
return d->format;
}
void ProgressBar::setInvertedAppearance(bool invert)
{
if (d->invertedAppearance & invert) {
return;
}
d->invertedAppearance = invert;
update();
}
bool ProgressBar::invertedAppearance()
{
return d->invertedAppearance;
}
void ProgressBar::setTextVisible(bool visible)
{
if (d->textVisible & visible) {
return;
}
d->textVisible = visible;
}
bool ProgressBar::isTextVisible() const
{
return d->textVisible;
}
void ProgressBar::reset()
{
d->value = d->minimum - 1;
update();
}
void ProgressBar::setRange(int minimum, int maximum)
{
d->minimum = minimum;
d->maximum = maximum;
if (d->value < (d->minimum - 1) || d->value > d->maximum) {
reset();
}
}
void ProgressBar::setMinimum(int minimum)
{
setRange(minimum, qMax(d->maximum, minimum));
}
void ProgressBar::setMaximum(int maximum)
{
setRange(qMin(d->minimum, maximum), maximum);
}
int ProgressBar::maximum() const
{
return d->maximum;
}
int ProgressBar::minimum() const
{
return d->minimum;
}
void ProgressBar::setValue(int value)
{
//This line is from qprogressbar.cpp by Qt.
if (d->value == value
|| ((value > d->maximum || value < d->minimum)
&& (d->maximum != 0 || d->minimum != 0)))
return;
d->value = value;
emit valueChanged(value);
update();
}
int ProgressBar::value() const
{
return d->value;
}
void ProgressBar::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
QStyle *style = widget ? widget->style() : QApplication::style();
QStyleOptionProgressBarV2 options;
options.minimum = d->minimum;
options.maximum = d->maximum;
options.progress = d->value;
options.textAlignment = d->alignment;
options.textVisible = d->textVisible;
options.text = text();
options.invertedAppearance = d->invertedAppearance;
options.rect = option->rect;
style->drawControl(QStyle::CE_ProgressBar, &options, painter, widget);
}
QSizeF ProgressBar::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
QFontMetrics fm(font());
QStyleOptionProgressBarV2 options;
options.minimum = d->minimum;
options.maximum = d->maximum;
options.progress = d->value;
options.textAlignment = d->alignment;
options.textVisible = d->textVisible;
options.text = text();
options.invertedAppearance = d->invertedAppearance;
QStyle *style = QApplication::style();
int cw = style->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &options);
QSize size = QSize(cw * 7 + fm.width(QLatin1Char('0')) * 4, fm.height() + 8);
return style->sizeFromContents(QStyle::CT_ProgressBar, &options, size);
}
/*This method has the same code that QProgressBar::text() */
QString ProgressBar::text() const
{
qint64 totalSteps = qint64(d->maximum) - qint64(d->minimum);
QString result = d->format;
result.replace(QLatin1String("%m"), QString::fromLatin1("%1").arg(totalSteps));
result.replace(QLatin1String("%v"), QString::fromLatin1("%1").arg(d->value));
if (totalSteps == 0) {
result.replace(QLatin1String("%p"), QString::fromLatin1("%1").arg(100));
return result;
}
int progress = int(((qreal(d->value) - qreal(d->minimum)) * 100.0) / totalSteps);
result.replace(QLatin1String("%p"), QString::fromLatin1("%1").arg(progress));
return result;
}
}
#include "progressbar.moc"