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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qprintpreviewwidget.h"
#include <private/qprinter_p.h>
#include <QtCore/qmath.h>
#include <QtGui/qboxlayout.h>
#include <QtGui/qgraphicsitem.h>
#include <QtGui/qgraphicsview.h>
#include <QtGui/qscrollbar.h>
#include <QtGui/qstyleoption.h>
#ifndef QT_NO_PRINTPREVIEWWIDGET
QT_BEGIN_NAMESPACE
namespace {
class PageItem : public QGraphicsItem
{
public:
PageItem(int _pageNum, const QPicture* _pagePicture, QSize _paperSize, QRect _pageRect)
: pageNum(_pageNum), pagePicture(_pagePicture),
paperSize(_paperSize), pageRect(_pageRect)
{
qreal border = qMax(paperSize.height(), paperSize.width()) / 25;
brect = QRectF(QPointF(-border, -border),
QSizeF(paperSize)+QSizeF(2*border, 2*border));
setCacheMode(DeviceCoordinateCache);
}
inline QRectF boundingRect() const
{ return brect; }
inline int pageNumber() const
{ return pageNum; }
void paint(QPainter *painter, const QStyleOptionGraphicsItem *item, QWidget *widget);
private:
int pageNum;
const QPicture* pagePicture;
QSize paperSize;
QRect pageRect;
QRectF brect;
};
void PageItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(widget);
#if 0
// Draw item bounding rect, for debugging
painter->save();
painter->setPen(QPen(Qt::red, 0));
painter->setBrush(Qt::NoBrush);
painter->drawRect(QRectF(-border()+1.0, -border()+1.0, boundingRect().width()-2, boundingRect().height()-2));
painter->restore();
#endif
QRectF paperRect(0,0, paperSize.width(), paperSize.height());
// Draw shadow
painter->setClipRect(option->exposedRect);
qreal shWidth = paperRect.width()/100;
QRectF rshadow(paperRect.topRight() + QPointF(0, shWidth),
paperRect.bottomRight() + QPointF(shWidth, 0));
QLinearGradient rgrad(rshadow.topLeft(), rshadow.topRight());
rgrad.setColorAt(0.0, QColor(0,0,0,255));
rgrad.setColorAt(1.0, QColor(0,0,0,0));
painter->fillRect(rshadow, QBrush(rgrad));
QRectF bshadow(paperRect.bottomLeft() + QPointF(shWidth, 0),
paperRect.bottomRight() + QPointF(0, shWidth));
QLinearGradient bgrad(bshadow.topLeft(), bshadow.bottomLeft());
bgrad.setColorAt(0.0, QColor(0,0,0,255));
bgrad.setColorAt(1.0, QColor(0,0,0,0));
painter->fillRect(bshadow, QBrush(bgrad));
QRectF cshadow(paperRect.bottomRight(),
paperRect.bottomRight() + QPointF(shWidth, shWidth));
QRadialGradient cgrad(cshadow.topLeft(), shWidth, cshadow.topLeft());
cgrad.setColorAt(0.0, QColor(0,0,0,255));
cgrad.setColorAt(1.0, QColor(0,0,0,0));
painter->fillRect(cshadow, QBrush(cgrad));
painter->setClipRect(paperRect & option->exposedRect);
painter->fillRect(paperRect, Qt::white);
if (!pagePicture)
return;
painter->drawPicture(pageRect.topLeft(), *pagePicture);
// Effect: make anything drawn in the margins look washed out.
QPainterPath path;
path.addRect(paperRect);
path.addRect(pageRect);
painter->setPen(QPen(Qt::NoPen));
painter->setBrush(QColor(255, 255, 255, 180));
painter->drawPath(path);
#if 0
// Draw frame around paper.
painter->setPen(QPen(Qt::black, 0));
painter->setBrush(Qt::NoBrush);
painter->drawRect(paperRect);
#endif
// todo: drawtext "Page N" below paper
}
class GraphicsView : public QGraphicsView
{
Q_OBJECT
public:
GraphicsView(QWidget* parent = 0)
: QGraphicsView(parent)
{}
signals:
void resized();
protected:
void resizeEvent(QResizeEvent* e)
{
QGraphicsView::resizeEvent(e);
emit resized();
}
void showEvent(QShowEvent* e)
{
QGraphicsView::showEvent(e);
emit resized();
}
};
} // anonymous namespace
class QPrintPreviewWidgetPrivate
{
Q_DECLARE_PUBLIC(QPrintPreviewWidget)
public:
QPrintPreviewWidgetPrivate(QPrintPreviewWidget *q)
: q_ptr(q), scene(0), curPage(1),
viewMode(QPrintPreviewWidget::SinglePageView),
zoomMode(QPrintPreviewWidget::FitInView),
zoomFactor(1), initialized(false), fitting(true)
{}
// private slots
void _q_fit(bool doFitting = false);
void _q_updateCurrentPage();
void init();
void populateScene();
void layoutPages();
void generatePreview();
void setCurrentPage(int pageNumber);
void zoom(qreal zoom);
void setZoomFactor(qreal zoomFactor);
int calcCurrentPage();
QPrintPreviewWidget *q_ptr;
GraphicsView *graphicsView;
QGraphicsScene *scene;
int curPage;
QList<const QPicture *> pictures;
QList<QGraphicsItem *> pages;
QPrintPreviewWidget::ViewMode viewMode;
QPrintPreviewWidget::ZoomMode zoomMode;
qreal zoomFactor;
bool ownPrinter;
QPrinter* printer;
bool initialized;
bool fitting;
};
void QPrintPreviewWidgetPrivate::_q_fit(bool doFitting)
{
Q_Q(QPrintPreviewWidget);
if (curPage < 1 || curPage > pages.count())
return;
if (!doFitting && !fitting)
return;
if (doFitting && fitting) {
QRect viewRect = graphicsView->viewport()->rect();
if (zoomMode == QPrintPreviewWidget::FitInView) {
QList<QGraphicsItem*> containedItems = graphicsView->items(viewRect, Qt::ContainsItemBoundingRect);
foreach(QGraphicsItem* item, containedItems) {
PageItem* pg = static_cast<PageItem*>(item);
if (pg->pageNumber() == curPage)
return;
}
}
int newPage = calcCurrentPage();
if (newPage != curPage)
curPage = newPage;
}
QRectF target = pages.at(curPage-1)->sceneBoundingRect();
if (viewMode == QPrintPreviewWidget::FacingPagesView) {
// fit two pages
if (curPage % 2)
target.setLeft(target.left() - target.width());
else
target.setRight(target.right() + target.width());
} else if (viewMode == QPrintPreviewWidget::AllPagesView) {
target = scene->itemsBoundingRect();
}
if (zoomMode == QPrintPreviewWidget::FitToWidth) {
QTransform t;
qreal scale = graphicsView->viewport()->width() / target.width();
t.scale(scale, scale);
graphicsView->setTransform(t);
if (doFitting && fitting) {
QRectF viewSceneRect = graphicsView->viewportTransform().mapRect(graphicsView->viewport()->rect());
viewSceneRect.moveTop(target.top());
graphicsView->ensureVisible(viewSceneRect); // Nah...
}
} else {
graphicsView->fitInView(target, Qt::KeepAspectRatio);
if (zoomMode == QPrintPreviewWidget::FitInView) {
int step = qRound(graphicsView->matrix().mapRect(target).height());
graphicsView->verticalScrollBar()->setSingleStep(step);
graphicsView->verticalScrollBar()->setPageStep(step);
}
}
zoomFactor = graphicsView->transform().m11() * (float(printer->logicalDpiY()) / q->logicalDpiY());
emit q->previewChanged();
}
void QPrintPreviewWidgetPrivate::_q_updateCurrentPage()
{
Q_Q(QPrintPreviewWidget);
if (viewMode == QPrintPreviewWidget::AllPagesView)
return;
int newPage = calcCurrentPage();
if (newPage != curPage) {
curPage = newPage;
emit q->previewChanged();
}
}
int QPrintPreviewWidgetPrivate::calcCurrentPage()
{
int maxArea = 0;
int newPage = curPage;
QRect viewRect = graphicsView->viewport()->rect();
QList<QGraphicsItem*> items = graphicsView->items(viewRect);
for (int i=0; i<items.size(); ++i) {
PageItem* pg = static_cast<PageItem*>(items.at(i));
QRect overlap = graphicsView->mapFromScene(pg->sceneBoundingRect()).boundingRect() & viewRect;
int area = overlap.width() * overlap.height();
if (area > maxArea) {
maxArea = area;
newPage = pg->pageNumber();
} else if (area == maxArea && pg->pageNumber() < newPage) {
newPage = pg->pageNumber();
}
}
return newPage;
}
void QPrintPreviewWidgetPrivate::init()
{
Q_Q(QPrintPreviewWidget);
graphicsView = new GraphicsView;
graphicsView->setInteractive(false);
graphicsView->setDragMode(QGraphicsView::ScrollHandDrag);
graphicsView->setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
QObject::connect(graphicsView->verticalScrollBar(), SIGNAL(valueChanged(int)),
q, SLOT(_q_updateCurrentPage()));
QObject::connect(graphicsView, SIGNAL(resized()), q, SLOT(_q_fit()));
scene = new QGraphicsScene(graphicsView);
scene->setBackgroundBrush(Qt::gray);
graphicsView->setScene(scene);
QVBoxLayout *layout = new QVBoxLayout;
q->setLayout(layout);
layout->setContentsMargins(0, 0, 0, 0);
layout->addWidget(graphicsView);
}
void QPrintPreviewWidgetPrivate::populateScene()
{
// remove old pages
for (int i = 0; i < pages.size(); i++)
scene->removeItem(pages.at(i));
qDeleteAll(pages);
pages.clear();
int numPages = pictures.count();
QSize paperSize = printer->paperRect().size();
QRect pageRect = printer->pageRect();
for (int i = 0; i < numPages; i++) {
PageItem* item = new PageItem(i+1, pictures.at(i), paperSize, pageRect);
scene->addItem(item);
pages.append(item);
}
}
void QPrintPreviewWidgetPrivate::layoutPages()
{
int numPages = pages.count();
if (numPages < 1)
return;
int numPagePlaces = numPages;
int cols = 1; // singleMode and default
if (viewMode == QPrintPreviewWidget::AllPagesView) {
if (printer->orientation() == QPrinter::Portrait)
cols = qCeil(qSqrt((float) numPages));
else
cols = qFloor(qSqrt((float) numPages));
cols += cols % 2; // Nicer with an even number of cols
}
else if (viewMode == QPrintPreviewWidget::FacingPagesView) {
cols = 2;
numPagePlaces += 1;
}
int rows = qCeil(qreal(numPagePlaces) / cols);
qreal itemWidth = pages.at(0)->boundingRect().width();
qreal itemHeight = pages.at(0)->boundingRect().height();
int pageNum = 1;
for (int i = 0; i < rows && pageNum <= numPages; i++) {
for (int j = 0; j < cols && pageNum <= numPages; j++) {
if (!i && !j && viewMode == QPrintPreviewWidget::FacingPagesView) {
// Front page doesn't have a facing page
continue;
} else {
pages.at(pageNum-1)->setPos(QPointF(j*itemWidth, i*itemHeight));
pageNum++;
}
}
}
scene->setSceneRect(scene->itemsBoundingRect());
}
void QPrintPreviewWidgetPrivate::generatePreview()
{
//### If QPrinter::setPreviewMode() becomes public, handle the
//### case that we have been constructed with a printer that
//### _already_ has been preview-painted to, so we should
//### initially just show the pages it already contains, and not
//### emit paintRequested() until the user changes some parameter
Q_Q(QPrintPreviewWidget);
printer->d_func()->setPreviewMode(true);
emit q->paintRequested(printer);
printer->d_func()->setPreviewMode(false);
pictures = printer->d_func()->previewPages();
populateScene(); // i.e. setPreviewPrintedPictures() e.l.
layoutPages();
curPage = qBound(1, curPage, pages.count());
if (fitting)
_q_fit();
emit q->previewChanged();
}
void QPrintPreviewWidgetPrivate::setCurrentPage(int pageNumber)
{
if (pageNumber < 1 || pageNumber > pages.count())
return;
int lastPage = curPage;
curPage = pageNumber;
if (lastPage != curPage && lastPage > 0 && lastPage <= pages.count()) {
if (zoomMode != QPrintPreviewWidget::FitInView) {
QScrollBar *hsc = graphicsView->horizontalScrollBar();
QScrollBar *vsc = graphicsView->verticalScrollBar();
QPointF pt = graphicsView->transform().map(pages.at(curPage-1)->pos());
vsc->setValue(int(pt.y()) - 10);
hsc->setValue(int(pt.x()) - 10);
} else {
graphicsView->centerOn(pages.at(curPage-1));
}
}
}
void QPrintPreviewWidgetPrivate::zoom(qreal zoom)
{
zoomFactor *= zoom;
graphicsView->scale(zoom, zoom);
}
void QPrintPreviewWidgetPrivate::setZoomFactor(qreal _zoomFactor)
{
Q_Q(QPrintPreviewWidget);
zoomFactor = _zoomFactor;
graphicsView->resetTransform();
int dpi_y = q->logicalDpiY();
int printer_dpi_y = printer->logicalDpiY();
graphicsView->scale(zoomFactor*(dpi_y/float(printer_dpi_y)),
zoomFactor*(dpi_y/float(printer_dpi_y)));
}
///////////////////////////////////////
/*!
\class QPrintPreviewWidget
\since 4.4
\brief The QPrintPreviewWidget class provides a widget for
previewing page layouts for printer output.
\ingroup multimedia
QPrintPreviewDialog uses a QPrintPreviewWidget internally, and the
purpose of QPrintPreviewWidget is to make it possible to embed the
preview into other widgets. It also makes it possible to build a different
user interface around it than the default one provided with QPrintPreviewDialog.
Using QPrintPreviewWidget is straightforward:
\list 1
\o Create the QPrintPreviewWidget
Construct the QPrintPreviewWidget either by passing in an
exisiting QPrinter object, or have QPrintPreviewWidget create a
default constructed QPrinter object for you.
\o Connect the paintRequested() signal to a slot.
When the widget needs to generate a set of preview pages, a
paintRequested() signal will be emitted from the widget. Connect a
slot to this signal, and draw onto the QPrinter passed in as a
signal parameter. Call QPrinter::newPage(), to start a new
page in the preview.
\endlist
\sa QPrinter, QPrintDialog, QPageSetupDialog, QPrintPreviewDialog
*/
/*!
\enum QPrintPreviewWidget::ViewMode
This enum is used to describe the view mode of the preview widget.
\value SinglePageView A mode where single pages in the preview
is viewed.
\value FacingPagesView A mode where the facing pages in the preview
is viewed.
\value AllPagesView A view mode where all the pages in the preview
is viewed.
*/
/*!
\enum QPrintPreviewWidget::ZoomMode
This enum is used to describe zoom mode of the preview widget.
\value CustomZoom The zoom is set to a custom zoom value.
\value FitToWidth This mode fits the current page to the width of the view.
\value FitInView This mode fits the current page inside the view.
*/
/*!
Constructs a QPrintPreviewWidget based on \a printer and with \a
parent as the parent widget. The widget flags \a flags are passed on
to the QWidget constructor.
\sa QWidget::setWindowFlags()
*/
QPrintPreviewWidget::QPrintPreviewWidget(QPrinter *printer, QWidget *parent, Qt::WindowFlags flags)
: QWidget(parent, flags), d_ptr(new QPrintPreviewWidgetPrivate(this))
{
Q_D(QPrintPreviewWidget);
d->printer = printer;
d->ownPrinter = false;
d->init();
}
/*!
\overload
This will cause QPrintPreviewWidget to create an internal, default
constructed QPrinter object, which will be used to generate the
preview.
*/
QPrintPreviewWidget::QPrintPreviewWidget(QWidget *parent, Qt::WindowFlags flags)
: QWidget(parent, flags), d_ptr(new QPrintPreviewWidgetPrivate(this))
{
Q_D(QPrintPreviewWidget);
d->printer = new QPrinter;
d->ownPrinter = true;
d->init();
}
/*!
Destroys the QPrintPreviewWidget.
*/
QPrintPreviewWidget::~QPrintPreviewWidget()
{
Q_D(QPrintPreviewWidget);
if (d->ownPrinter)
delete d->printer;
delete d_ptr;
}
/*!
Returns the current view mode. The default view mode is SinglePageView.
*/
QPrintPreviewWidget::ViewMode QPrintPreviewWidget::viewMode() const
{
Q_D(const QPrintPreviewWidget);
return d->viewMode;
}
/*!
Sets the view mode to \a mode. The default view mode is
SinglePageView.
*/
void QPrintPreviewWidget::setViewMode(ViewMode mode)
{
Q_D(QPrintPreviewWidget);
d->viewMode = mode;
d->layoutPages();
if (d->viewMode == AllPagesView) {
d->graphicsView->fitInView(d->scene->itemsBoundingRect(), Qt::KeepAspectRatio);
d->fitting = false;
d->zoomMode = QPrintPreviewWidget::CustomZoom;
d->zoomFactor = d->graphicsView->transform().m11() * (float(d->printer->logicalDpiY()) / logicalDpiY());
emit previewChanged();
} else {
d->fitting = true;
d->_q_fit();
}
}
/*!
Returns the current orientation of the preview. This value is
obtained from the QPrinter object associated with the preview.
*/
QPrinter::Orientation QPrintPreviewWidget::orientation() const
{
Q_D(const QPrintPreviewWidget);
return d->printer->orientation();
}
/*!
Sets the current orientation to \a orientation. This value will be
set on the QPrinter object associated with the preview.
*/
void QPrintPreviewWidget::setOrientation(QPrinter::Orientation orientation)
{
Q_D(QPrintPreviewWidget);
d->printer->setOrientation(orientation);
d->generatePreview();
}
/*!
Prints the preview to the printer associated with the preview.
*/
void QPrintPreviewWidget::print()
{
Q_D(QPrintPreviewWidget);
// ### make use of the generated pages
emit paintRequested(d->printer);
}
/*!
Zooms the current view in by \a factor. The default value for \a
factor is 1.1, which means the view will be scaled up by 10%.
*/
void QPrintPreviewWidget::zoomIn(qreal factor)
{
Q_D(QPrintPreviewWidget);
d->fitting = false;
d->zoomMode = QPrintPreviewWidget::CustomZoom;
d->zoom(factor);
}
/*!
Zooms the current view out by \a factor. The default value for \a
factor is 1.1, which means the view will be scaled down by 10%.
*/
void QPrintPreviewWidget::zoomOut(qreal factor)
{
Q_D(QPrintPreviewWidget);
d->fitting = false;
d->zoomMode = QPrintPreviewWidget::CustomZoom;
d->zoom(1/factor);
}
/*!
Returns the zoom factor of the view.
*/
qreal QPrintPreviewWidget::zoomFactor() const
{
Q_D(const QPrintPreviewWidget);
return d->zoomFactor;
}
/*!
Sets the zoom factor of the view to \a factor. For example, a
value of 1.0 indicates an unscaled view, which is approximately
the size the view will have on paper. A value of 0.5 will halve
the size of the view, while a value of 2.0 will double the size of
the view.
*/
void QPrintPreviewWidget::setZoomFactor(qreal factor)
{
Q_D(QPrintPreviewWidget);
d->fitting = false;
d->zoomMode = QPrintPreviewWidget::CustomZoom;
d->setZoomFactor(factor);
}
/*!
Returns the number of pages in the preview.
*/
int QPrintPreviewWidget::numPages() const
{
Q_D(const QPrintPreviewWidget);
return d->pages.size();
}
/*!
Returns the currently viewed page in the preview.
*/
int QPrintPreviewWidget::currentPage() const
{
Q_D(const QPrintPreviewWidget);
return d->curPage;
}
/*!
Sets the current page in the preview. This will cause the view to
skip to the beginning of \a page.
*/
void QPrintPreviewWidget::setCurrentPage(int page)
{
Q_D(QPrintPreviewWidget);
d->setCurrentPage(page);
}
/*!
This is a convenience function and is the same as calling \c
{setZoomMode(QPrintPreviewWidget::FitToWidth)}.
*/
void QPrintPreviewWidget::fitToWidth()
{
setZoomMode(FitToWidth);
}
/*!
This is a convenience function and is the same as calling \c
{setZoomMode(QPrintPreviewWidget::FitInView)}.
*/
void QPrintPreviewWidget::fitInView()
{
setZoomMode(FitInView);
}
/*!
Sets the zoom mode to \a zoomMode. The default zoom mode is FitInView.
\sa zoomMode(), viewMode(), setViewMode()
*/
void QPrintPreviewWidget::setZoomMode(QPrintPreviewWidget::ZoomMode zoomMode)
{
Q_D(QPrintPreviewWidget);
d->zoomMode = zoomMode;
if (d->zoomMode == FitInView || d->zoomMode == FitToWidth) {
d->fitting = true;
d->_q_fit(true);
} else {
d->fitting = false;
}
}
/*!
Returns the current zoom mode.
\sa setZoomMode(), viewMode(), setViewMode()
*/
QPrintPreviewWidget::ZoomMode QPrintPreviewWidget::zoomMode() const
{
Q_D(const QPrintPreviewWidget);
return d->zoomMode;
}
/*!
This is a convenience function and is the same as calling \c
{setOrientation(QPrinter::Landscape)}.
*/
void QPrintPreviewWidget::setLandscapeOrientation()
{
setOrientation(QPrinter::Landscape);
}
/*!
This is a convenience function and is the same as calling \c
{setOrientation(QPrinter::Portrait)}.
*/
void QPrintPreviewWidget::setPortraitOrientation()
{
setOrientation(QPrinter::Portrait);
}
/*!
This is a convenience function and is the same as calling \c
{setViewMode(QPrintPreviewWidget::SinglePageView)}.
*/
void QPrintPreviewWidget::setSinglePageViewMode()
{
setViewMode(SinglePageView);
}
/*!
This is a convenience function and is the same as calling \c
{setViewMode(QPrintPreviewWidget::FacingPagesView)}.
*/
void QPrintPreviewWidget::setFacingPagesViewMode()
{
setViewMode(FacingPagesView);
}
/*!
This is a convenience function and is the same as calling \c
{setViewMode(QPrintPreviewWidget::AllPagesView)}.
*/
void QPrintPreviewWidget::setAllPagesViewMode()
{
setViewMode(AllPagesView);
}
/*!
This function updates the preview, which causes the
paintRequested() signal to be emitted.
*/
void QPrintPreviewWidget::updatePreview()
{
Q_D(QPrintPreviewWidget);
d->initialized = true;
d->generatePreview();
d->graphicsView->updateGeometry();
}
/*! \reimp
*/
void QPrintPreviewWidget::setVisible(bool visible)
{
Q_D(QPrintPreviewWidget);
if (visible && !d->initialized)
updatePreview();
QWidget::setVisible(visible);
}
/*!
\fn void QPrintPreviewWidget::paintRequested(QPrinter *printer)
This signal is emitted when the preview widget needs to generate a
set of preview pages. \a printer is the printer associated with
this preview widget.
*/
/*!
\fn void QPrintPreviewWidget::previewChanged()
This signal is emitted whenever the preview widget has changed
some internal state, such as the orientation.
*/
QT_END_NAMESPACE
#include "moc_qprintpreviewwidget.cpp"
#include "qprintpreviewwidget.moc"
#endif // QT_NO_PRINTPREVIEWWIDGET
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