Mac-4.7.4/src/qt3support/widgets/q3progressbar.cpp - platform/external/qt - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the Qt3Support module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** GNU Lesser General Public License Usage
 ** This file may be used under the terms of the GNU Lesser General Public
 ** License version 2.1 as published by the Free Software Foundation and
 ** appearing in the file LICENSE.LGPL included in the packaging of this
 ** file. Please review the following information to ensure the GNU Lesser
 ** General Public License version 2.1 requirements will be met:
 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights. These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU General
 ** Public License version 3.0 as published by the Free Software Foundation
 ** and appearing in the file LICENSE.GPL included in the packaging of this
 ** file. Please review the following information to ensure the GNU General
 ** Public License version 3.0 requirements will be met:
 ** http://www.gnu.org/copyleft/gpl.html.
 **
 ** Other Usage
 ** Alternatively, this file may be used in accordance with the terms and
 ** conditions contained in a signed written agreement between you and Nokia.
 **
 **
 **
 **
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "q3progressbar.h"
 #ifndef QT_NO_PROGRESSBAR
 #include "qpainter.h"
 #include "qdrawutil.h"
 #include "qpixmap.h"
 #include "qstyle.h"
 #include "qstyleoption.h"
 #ifndef QT_NO_ACCESSIBILITY
 #include "qaccessible.h"
 #endif
 #include "qevent.h"
 #include <limits.h>

 QT_BEGIN_NAMESPACE

 /*!
     \class Q3ProgressBar
     \brief The Q3ProgressBar widget provides a horizontal progress bar.

     \compat

     A progress bar is used to give the user an indication of the
     progress of an operation and to reassure them that the application
     is still running.

     The progress bar uses the concept of \e steps; you give it the
     total number of steps and the number of steps completed so far and
     it will display the percentage of steps that have been completed.
     You can specify the total number of steps in the constructor or
     later with setTotalSteps(). The current number of steps is set
     with setProgress(). The progress bar can be rewound to the
     beginning with reset().

     If the total is given as 0 the progress bar shows a busy indicator
     instead of a percentage of steps. This is useful, for example,
     when using QFtp or QHttp to download items when they are unable to
     determine the size of the item being downloaded.

     \sa QProgressDialog

     \inlineimage qprogbar-m.png Screenshot in Motif style
     \inlineimage qprogbar-w.png Screenshot in Windows style

     \sa QProgressDialog
 */


 /*! \obsolete
     Constructs a progress bar.

     The total number of steps is set to 100 by default.

     The \a parent, \a name and widget flags, \a f, are passed on to
     the QFrame::QFrame() constructor.

     \sa setTotalSteps()
 */

 Q3ProgressBar::Q3ProgressBar(QWidget *parent, const char *name, Qt::WindowFlags f)
     : QFrame(parent, f),
       total_steps(100),
       progress_val(-1),
       percentage(-1),
       center_indicator(true),
       percentage_visible(true),
       d(0)
 {
     setObjectName(QLatin1String(name));
     setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
     initFrame();
 }


 /*! \obsolete
     Constructs a progress bar.

     The \a totalSteps is the total number of steps that need to be
     completed for the operation which this progress bar represents.
     For example, if the operation is to examine 50 files, this value
     would be 50. Before examining the first file, call setProgress(0);
     call setProgress(50) after examining the last file.

     The \a parent, \a name and widget flags, \a f, are passed to the
     QFrame::QFrame() constructor.

     \sa setTotalSteps(), setProgress()
 */

 Q3ProgressBar::Q3ProgressBar(int totalSteps, QWidget *parent, const char *name, Qt::WindowFlags f)
     : QFrame(parent, f),
       total_steps(totalSteps),
       progress_val(-1),
       percentage(-1),
       center_indicator(true),
       percentage_visible(true),
       d(0)
 {
     setObjectName(QLatin1String(name));
     setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
     initFrame();
 }
 #endif

 /*!
     Constructs a progress bar.

     The total number of steps is set to 100 by default.

     The \a parent, and widget flags, \a f, are passed on to
     the QFrame::QFrame() constructor.

     \sa setTotalSteps()
 */

 Q3ProgressBar::Q3ProgressBar(QWidget *parent, Qt::WindowFlags f)
     : QFrame(parent, f),
       total_steps(100),
       progress_val(-1),
       percentage(-1),
       center_indicator(true),
       percentage_visible(true),
       d(0)
 {
     setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
     initFrame();
 }


 /*!
     Constructs a progress bar.

     The \a totalSteps is the total number of steps that need to be
     completed for the operation which this progress bar represents.
     For example, if the operation is to examine 50 files, this value
     would be 50. Before examining the first file, call setProgress(0);
     call setProgress(50) after examining the last file.

     The \a parent, and widget flags, \a f, are passed to the
     QFrame::QFrame() constructor.

     \sa setTotalSteps(), setProgress()
 */

 Q3ProgressBar::Q3ProgressBar(int totalSteps, QWidget *parent, Qt::WindowFlags f)
     : QFrame(parent, f),
       total_steps(totalSteps),
       progress_val(-1),
       percentage(-1),
       center_indicator(true),
       percentage_visible(true),
       d(0)
 {
     setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
     initFrame();
 }


 /*!
     Reset the progress bar. The progress bar "rewinds" and shows no
     progress.
 */

 void Q3ProgressBar::reset()
 {
     progress_val = -1;
     percentage = -1;
     setIndicator(progress_str, progress_val, total_steps);
     repaint();
 }


 /*!
     \property Q3ProgressBar::totalSteps
     \brief The total number of steps.

     If totalSteps is 0, the progress bar will display a busy
     indicator.
 */

 void Q3ProgressBar::setTotalSteps(int totalSteps)
 {
     total_steps = totalSteps;

     // Current progress is invalid if larger than total
     if (total_steps < progress_val)
         progress_val = -1;

     if (isVisible() &&
          (setIndicator(progress_str, progress_val, total_steps) || !total_steps))
         repaint();
 }


 /*!
     \property Q3ProgressBar::progress
     \brief The current amount of progress

     This property is -1 if progress counting has not started.
 */

 void Q3ProgressBar::setProgress(int progress)
 {
     if (progress == progress_val ||
          progress < 0 || ((progress > total_steps) && total_steps))
         return;

     int old_progress_val = progress_val;
     progress_val = progress;

     if (setIndicator(progress_str, progress_val, total_steps)
         || ( total_steps == 0 || (width() * progress_val / total_steps != width() * old_progress_val / total_steps )))
         repaint();

 #ifndef QT_NO_ACCESSIBILITY
     QAccessible::updateAccessibility(this, 0, QAccessible::ValueChanged);
 #endif
 }

 /*!
     \overload

     Sets the amount of progress to \a progress and the total number of
     steps to \a totalSteps.

     \sa setTotalSteps()
 */

 void Q3ProgressBar::setProgress(int progress, int totalSteps)
 {
     if (total_steps != totalSteps)
         setTotalSteps(totalSteps);
     setProgress(progress);
 }

 /*!
   \property Q3ProgressBar::progressString
   \brief the amount of progress as a string

     This property is an empty string if progress counting has not started.
 */

 static QStyleOptionProgressBar getStyleOption(const Q3ProgressBar *pb)
 {
     QStyleOptionProgressBar opt;
     opt.init(pb);
     opt.rect = pb->contentsRect();
     opt.minimum = 0;
     opt.maximum = pb->totalSteps();
     opt.progress = pb->progress();
     if (pb->centerIndicator())
         opt.textAlignment = Qt::AlignCenter;
     else
         opt.textAlignment = Qt::AlignAuto;
     opt.textVisible = pb->percentageVisible();
     opt.text = pb->progressString();
     return opt;
 }

 /*!
     \reimp
 */
 QSize Q3ProgressBar::sizeHint() const
 {
     ensurePolished();
     QFontMetrics fm = fontMetrics();
     QStyleOptionProgressBar opt = getStyleOption(this);
     int cw = style()->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &opt, this);
     return style()->sizeFromContents(QStyle::CT_ProgressBar, &opt,
                                     QSize(cw * 7 + fm.width(QLatin1Char('0')) * 4, fm.height() + 8), this);
 }

 /*!
     \reimp
 */
 QSize Q3ProgressBar::minimumSizeHint() const
 {
     return sizeHint();
 }

 /*!
     \property Q3ProgressBar::centerIndicator
     \brief whether the indicator string should be centered
 */

 void Q3ProgressBar::setCenterIndicator(bool on)
 {
     if (on == center_indicator)
         return;
     center_indicator = on;
     repaint();
 }

 /*!
     \property Q3ProgressBar::percentageVisible
     \brief whether the current progress value is displayed

     The default is true.

     \sa centerIndicator
 */
 void Q3ProgressBar::setPercentageVisible(bool on)
 {
     if (on == percentage_visible)
         return;
     percentage_visible = on;
     repaint();
 }

 /*!
     \reimp
 */
 void Q3ProgressBar::setVisible(bool visible)
 {
     if (visible)
         setIndicator(progress_str, progress_val, total_steps);
     QFrame::setVisible(visible);
 }

 void Q3ProgressBar::initFrame()
 {
     setFrameStyle(QFrame::NoFrame);
 }

 /*!
     \reimp
 */
 void Q3ProgressBar::changeEvent(QEvent *ev)
 {
     if(ev->type() == QEvent::StyleChange)
         initFrame();
     QFrame::changeEvent(ev);
 }


 /*!
     This method is called to generate the text displayed in the center
     (or in some styles, to the left) of the progress bar.

     The \a progress may be negative, indicating that the progress bar
     is in the "reset" state before any progress is set.

     The default implementation is the percentage of completion or
     blank in the reset state. The percentage is calculated based on
     the \a progress and \a totalSteps. You can set the \a indicator
     text if you wish.

     To allow efficient repainting of the progress bar, this method
     should return false if the string is unchanged from the last call
     to this function.
 */

 bool Q3ProgressBar::setIndicator(QString & indicator, int progress,
                                  int totalSteps)
 {
     if (!totalSteps)
         return false;
     if (progress < 0) {
         indicator = QString::fromLatin1("");
         return true;
     } else {
         // Get the values down to something usable.
         if (totalSteps > INT_MAX/1000) {
             progress /= 1000;
             totalSteps /= 1000;
         }

         int np = progress * 100 / totalSteps;
         if (np != percentage) {
             percentage = np;
             indicator.sprintf("%d%%", np);
             return true;
         } else {
             return false;
         }
     }
 }


 /*!
     \reimp
 */
 void Q3ProgressBar::paintEvent(QPaintEvent *)
 {
     QPainter paint(this);
     QPainter *p = &paint;
     drawFrame(p);

     QStyleOptionProgressBar opt = getStyleOption(this);
     opt.rect = style()->subElementRect(QStyle::SE_ProgressBarGroove, &opt, this);

     style()->drawControl(QStyle::CE_ProgressBarGroove, &opt, p, this);
     opt.rect = contentsRect();
     opt.rect = style()->subElementRect(QStyle::SE_ProgressBarContents, &opt, this);
     style()->drawControl(QStyle::CE_ProgressBarContents, &opt, p, this);

     if (percentageVisible()) {
         opt.rect = contentsRect();
         opt.rect = style()->subElementRect(QStyle::SE_ProgressBarLabel, &opt, this);
         style()->drawControl(QStyle::CE_ProgressBarLabel, &opt, p, this);
     }
 }

 /*!
     \fn void Q3ProgressBar::setMargin(int margin)
     \since 4.2

     Sets the width of the margin around the contents of the widget to \a margin.

     This function uses QWidget::setContentsMargins() to set the margin.
     \sa margin(), QWidget::setContentsMargins()
 */

 /*!
     \fn int Q3ProgressBar::margin() const
     \since 4.2

     Returns the width of the margin around the contents of the widget.

     This function uses QWidget::getContentsMargins() to get the margin.
     \sa setMargin(), QWidget::getContentsMargins()
 */

 QT_END_NAMESPACE
	/****************************************************************************
	**
	** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
	** All rights reserved.
	** Contact: Nokia Corporation (qt-info@nokia.com)
	**
	** This file is part of the Qt3Support module of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:LGPL$
	** GNU Lesser General Public License Usage
	** This file may be used under the terms of the GNU Lesser General Public
	** License version 2.1 as published by the Free Software Foundation and
	** appearing in the file LICENSE.LGPL included in the packaging of this
	** file. Please review the following information to ensure the GNU Lesser
	** General Public License version 2.1 requirements will be met:
	** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
	**
	** In addition, as a special exception, Nokia gives you certain additional
	** rights. These rights are described in the Nokia Qt LGPL Exception
	** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU General
	** Public License version 3.0 as published by the Free Software Foundation
	** and appearing in the file LICENSE.GPL included in the packaging of this
	** file. Please review the following information to ensure the GNU General
	** Public License version 3.0 requirements will be met:
	** http://www.gnu.org/copyleft/gpl.html.
	**
	** Other Usage
	** Alternatively, this file may be used in accordance with the terms and
	** conditions contained in a signed written agreement between you and Nokia.
	**
	**
	**
	**
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include "q3progressbar.h"
	#ifndef QT_NO_PROGRESSBAR
	#include "qpainter.h"
	#include "qdrawutil.h"
	#include "qpixmap.h"
	#include "qstyle.h"
	#include "qstyleoption.h"
	#ifndef QT_NO_ACCESSIBILITY
	#include "qaccessible.h"
	#endif
	#include "qevent.h"
	#include <limits.h>

	QT_BEGIN_NAMESPACE

	/*!
	\class Q3ProgressBar
	\brief The Q3ProgressBar widget provides a horizontal progress bar.

	\compat

	A progress bar is used to give the user an indication of the
	progress of an operation and to reassure them that the application
	is still running.

	The progress bar uses the concept of \e steps; you give it the
	total number of steps and the number of steps completed so far and
	it will display the percentage of steps that have been completed.
	You can specify the total number of steps in the constructor or
	later with setTotalSteps(). The current number of steps is set
	with setProgress(). The progress bar can be rewound to the
	beginning with reset().

	If the total is given as 0 the progress bar shows a busy indicator
	instead of a percentage of steps. This is useful, for example,
	when using QFtp or QHttp to download items when they are unable to
	determine the size of the item being downloaded.

	\sa QProgressDialog

	\inlineimage qprogbar-m.png Screenshot in Motif style
	\inlineimage qprogbar-w.png Screenshot in Windows style

	\sa QProgressDialog
	*/


	/*! \obsolete
	Constructs a progress bar.

	The total number of steps is set to 100 by default.

	The \a parent, \a name and widget flags, \a f, are passed on to
	the QFrame::QFrame() constructor.

	\sa setTotalSteps()
	*/

	Q3ProgressBar::Q3ProgressBar(QWidget parent, const char name, Qt::WindowFlags f)
	: QFrame(parent, f),
	total_steps(100),
	progress_val(-1),
	percentage(-1),
	center_indicator(true),
	percentage_visible(true),
	d(0)
	{
	setObjectName(QLatin1String(name));
	setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
	initFrame();
	}


	/*! \obsolete
	Constructs a progress bar.

	The \a totalSteps is the total number of steps that need to be
	completed for the operation which this progress bar represents.
	For example, if the operation is to examine 50 files, this value
	would be 50. Before examining the first file, call setProgress(0);
	call setProgress(50) after examining the last file.

	The \a parent, \a name and widget flags, \a f, are passed to the
	QFrame::QFrame() constructor.

	\sa setTotalSteps(), setProgress()
	*/

	Q3ProgressBar::Q3ProgressBar(int totalSteps, QWidget parent, const char name, Qt::WindowFlags f)
	: QFrame(parent, f),
	total_steps(totalSteps),
	progress_val(-1),
	percentage(-1),
	center_indicator(true),
	percentage_visible(true),
	d(0)
	{
	setObjectName(QLatin1String(name));
	setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
	initFrame();
	}
	#endif

	/*!
	Constructs a progress bar.

	The total number of steps is set to 100 by default.

	The \a parent, and widget flags, \a f, are passed on to
	the QFrame::QFrame() constructor.

	\sa setTotalSteps()
	*/

	Q3ProgressBar::Q3ProgressBar(QWidget *parent, Qt::WindowFlags f)
	: QFrame(parent, f),
	total_steps(100),
	progress_val(-1),
	percentage(-1),
	center_indicator(true),
	percentage_visible(true),
	d(0)
	{
	setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
	initFrame();
	}


	/*!
	Constructs a progress bar.

	The \a totalSteps is the total number of steps that need to be
	completed for the operation which this progress bar represents.
	For example, if the operation is to examine 50 files, this value
	would be 50. Before examining the first file, call setProgress(0);
	call setProgress(50) after examining the last file.

	The \a parent, and widget flags, \a f, are passed to the
	QFrame::QFrame() constructor.

	\sa setTotalSteps(), setProgress()
	*/

	Q3ProgressBar::Q3ProgressBar(int totalSteps, QWidget *parent, Qt::WindowFlags f)
	: QFrame(parent, f),
	total_steps(totalSteps),
	progress_val(-1),
	percentage(-1),
	center_indicator(true),
	percentage_visible(true),
	d(0)
	{
	setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
	initFrame();
	}


	/*!
	Reset the progress bar. The progress bar "rewinds" and shows no
	progress.
	*/

	void Q3ProgressBar::reset()
	{
	progress_val = -1;
	percentage = -1;
	setIndicator(progress_str, progress_val, total_steps);
	repaint();
	}


	/*!
	\property Q3ProgressBar::totalSteps
	\brief The total number of steps.

	If totalSteps is 0, the progress bar will display a busy
	indicator.
	*/

	void Q3ProgressBar::setTotalSteps(int totalSteps)
	{
	total_steps = totalSteps;

	// Current progress is invalid if larger than total
	if (total_steps < progress_val)
	progress_val = -1;

	if (isVisible() &&
	(setIndicator(progress_str, progress_val, total_steps) \|\| !total_steps))
	repaint();
	}


	/*!
	\property Q3ProgressBar::progress
	\brief The current amount of progress

	This property is -1 if progress counting has not started.
	*/

	void Q3ProgressBar::setProgress(int progress)
	{
	if (progress == progress_val \|\|
	progress < 0 \|\| ((progress > total_steps) && total_steps))
	return;

	int old_progress_val = progress_val;
	progress_val = progress;

	if (setIndicator(progress_str, progress_val, total_steps)
	\|\| ( total_steps == 0 \|\| (width() * progress_val / total_steps != width() * old_progress_val / total_steps )))
	repaint();

	#ifndef QT_NO_ACCESSIBILITY
	QAccessible::updateAccessibility(this, 0, QAccessible::ValueChanged);
	#endif
	}

	/*!
	\overload

	Sets the amount of progress to \a progress and the total number of
	steps to \a totalSteps.

	\sa setTotalSteps()
	*/

	void Q3ProgressBar::setProgress(int progress, int totalSteps)
	{
	if (total_steps != totalSteps)
	setTotalSteps(totalSteps);
	setProgress(progress);
	}

	/*!
	\property Q3ProgressBar::progressString
	\brief the amount of progress as a string

	This property is an empty string if progress counting has not started.
	*/

	static QStyleOptionProgressBar getStyleOption(const Q3ProgressBar *pb)
	{
	QStyleOptionProgressBar opt;
	opt.init(pb);
	opt.rect = pb->contentsRect();
	opt.minimum = 0;
	opt.maximum = pb->totalSteps();
	opt.progress = pb->progress();
	if (pb->centerIndicator())
	opt.textAlignment = Qt::AlignCenter;
	else
	opt.textAlignment = Qt::AlignAuto;
	opt.textVisible = pb->percentageVisible();
	opt.text = pb->progressString();
	return opt;
	}

	/*!
	\reimp
	*/
	QSize Q3ProgressBar::sizeHint() const
	{
	ensurePolished();
	QFontMetrics fm = fontMetrics();
	QStyleOptionProgressBar opt = getStyleOption(this);
	int cw = style()->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &opt, this);
	return style()->sizeFromContents(QStyle::CT_ProgressBar, &opt,
	QSize(cw * 7 + fm.width(QLatin1Char('0')) * 4, fm.height() + 8), this);
	}

	/*!
	\reimp
	*/
	QSize Q3ProgressBar::minimumSizeHint() const
	{
	return sizeHint();
	}

	/*!
	\property Q3ProgressBar::centerIndicator
	\brief whether the indicator string should be centered
	*/

	void Q3ProgressBar::setCenterIndicator(bool on)
	{
	if (on == center_indicator)
	return;
	center_indicator = on;
	repaint();
	}

	/*!
	\property Q3ProgressBar::percentageVisible
	\brief whether the current progress value is displayed

	The default is true.

	\sa centerIndicator
	*/
	void Q3ProgressBar::setPercentageVisible(bool on)
	{
	if (on == percentage_visible)
	return;
	percentage_visible = on;
	repaint();
	}

	/*!
	\reimp
	*/
	void Q3ProgressBar::setVisible(bool visible)
	{
	if (visible)
	setIndicator(progress_str, progress_val, total_steps);
	QFrame::setVisible(visible);
	}

	void Q3ProgressBar::initFrame()
	{
	setFrameStyle(QFrame::NoFrame);
	}

	/*!
	\reimp
	*/
	void Q3ProgressBar::changeEvent(QEvent *ev)
	{
	if(ev->type() == QEvent::StyleChange)
	initFrame();
	QFrame::changeEvent(ev);
	}


	/*!
	This method is called to generate the text displayed in the center
	(or in some styles, to the left) of the progress bar.

	The \a progress may be negative, indicating that the progress bar
	is in the "reset" state before any progress is set.

	The default implementation is the percentage of completion or
	blank in the reset state. The percentage is calculated based on
	the \a progress and \a totalSteps. You can set the \a indicator
	text if you wish.

	To allow efficient repainting of the progress bar, this method
	should return false if the string is unchanged from the last call
	to this function.
	*/

	bool Q3ProgressBar::setIndicator(QString & indicator, int progress,
	int totalSteps)
	{
	if (!totalSteps)
	return false;
	if (progress < 0) {
	indicator = QString::fromLatin1("");
	return true;
	} else {
	// Get the values down to something usable.
	if (totalSteps > INT_MAX/1000) {
	progress /= 1000;
	totalSteps /= 1000;
	}

	int np = progress * 100 / totalSteps;
	if (np != percentage) {
	percentage = np;
	indicator.sprintf("%d%%", np);
	return true;
	} else {
	return false;
	}
	}
	}


	/*!
	\reimp
	*/
	void Q3ProgressBar::paintEvent(QPaintEvent *)
	{
	QPainter paint(this);
	QPainter *p = &paint;
	drawFrame(p);

	QStyleOptionProgressBar opt = getStyleOption(this);
	opt.rect = style()->subElementRect(QStyle::SE_ProgressBarGroove, &opt, this);

	style()->drawControl(QStyle::CE_ProgressBarGroove, &opt, p, this);
	opt.rect = contentsRect();
	opt.rect = style()->subElementRect(QStyle::SE_ProgressBarContents, &opt, this);
	style()->drawControl(QStyle::CE_ProgressBarContents, &opt, p, this);

	if (percentageVisible()) {
	opt.rect = contentsRect();
	opt.rect = style()->subElementRect(QStyle::SE_ProgressBarLabel, &opt, this);
	style()->drawControl(QStyle::CE_ProgressBarLabel, &opt, p, this);
	}
	}

	/*!
	\fn void Q3ProgressBar::setMargin(int margin)
	\since 4.2

	Sets the width of the margin around the contents of the widget to \a margin.

	This function uses QWidget::setContentsMargins() to set the margin.
	\sa margin(), QWidget::setContentsMargins()
	*/

	/*!
	\fn int Q3ProgressBar::margin() const
	\since 4.2

	Returns the width of the margin around the contents of the widget.

	This function uses QWidget::getContentsMargins() to get the margin.
	\sa setMargin(), QWidget::getContentsMargins()
	*/

	QT_END_NAMESPACE