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-rw-r--r--src/gui/painting/qwindowsurface.cpp383
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diff --git a/src/gui/painting/qwindowsurface.cpp b/src/gui/painting/qwindowsurface.cpp
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--- a/src/gui/painting/qwindowsurface.cpp
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-/****************************************************************************
-**
-** 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 QtGui 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 <private/qwindowsurface_p.h>
-#include <qwidget.h>
-#include <private/qwidget_p.h>
-#include <private/qbackingstore_p.h>
-#include <private/qapplication_p.h>
-
-QT_BEGIN_NAMESPACE
-
-class QWindowSurfacePrivate
-{
-public:
- QWindowSurfacePrivate(QWidget *w)
- : window(w)
- {
- }
-
- QWidget *window;
-#if !defined(Q_WS_QPA)
- QRect geometry;
-#else
- QSize size;
-#endif //Q_WS_QPA
- QRegion staticContents;
- QList<QImage*> bufferImages;
-};
-
-/*!
- \class QWindowSurface
- \since 4.3
- \internal
- \preliminary
- \ingroup qws qpa
-
- \brief The QWindowSurface class provides the drawing area for top-level
- windows.
-*/
-
-
-/*!
- \fn void QWindowSurface::beginPaint(const QRegion &region)
-
- This function is called before painting onto the surface begins,
- with the \a region in which the painting will occur.
-
- \sa endPaint(), paintDevice()
-*/
-
-/*!
- \fn void QWindowSurface::endPaint(const QRegion &region)
-
- This function is called after painting onto the surface has ended,
- with the \a region in which the painting was performed.
-
- \sa beginPaint(), paintDevice()
-*/
-
-/*!
- \fn void QWindowSurface::flush(QWidget *widget, const QRegion &region,
- const QPoint &offset)
-
- Flushes the given \a region from the specified \a widget onto the
- screen.
-
- Note that the \a offset parameter is currently unused.
-*/
-
-/*!
- \fn QPaintDevice* QWindowSurface::paintDevice()
-
- Implement this function to return the appropriate paint device.
-*/
-
-/*!
- Constructs an empty surface for the given top-level \a window.
-*/
-QWindowSurface::QWindowSurface(QWidget *window, bool setDefaultSurface)
- : d_ptr(new QWindowSurfacePrivate(window))
-{
- if (!QApplicationPrivate::runtime_graphics_system) {
- if(setDefaultSurface && window)
- window->setWindowSurface(this);
- }
-}
-
-/*!
- Destroys this surface.
-*/
-QWindowSurface::~QWindowSurface()
-{
- if (d_ptr->window)
- d_ptr->window->d_func()->extra->topextra->windowSurface = 0;
- delete d_ptr;
-}
-
-/*!
- Returns a pointer to the top-level window associated with this
- surface.
-*/
-QWidget* QWindowSurface::window() const
-{
- return d_ptr->window;
-}
-
-void QWindowSurface::beginPaint(const QRegion &)
-{
-}
-
-void QWindowSurface::endPaint(const QRegion &)
-{
-// QApplication::syncX();
- qDeleteAll(d_ptr->bufferImages);
- d_ptr->bufferImages.clear();
-}
-
-#if !defined(Q_WS_QPA)
-/*!
- Sets the currently allocated area to be the given \a rect.
-
- This function is called whenever area covered by the top-level
- window changes.
-
- \sa geometry()
-*/
-void QWindowSurface::setGeometry(const QRect &rect)
-{
- d_ptr->geometry = rect;
-}
-
-/*!
- Returns the currently allocated area on the screen.
-*/
-QRect QWindowSurface::geometry() const
-{
- return d_ptr->geometry;
-}
-#else
-
-/*!
- Sets the size of the windowsurface to be \a size.
-
- \sa size()
-*/
-void QWindowSurface::resize(const QSize &size)
-{
- d_ptr->size = size;
-}
-
-/*!
- Returns the current size of the windowsurface.
-*/
-QSize QWindowSurface::size() const
-{
- return d_ptr->size;
-}
-#endif //Q_WS_QPA
-
-/*!
- Scrolls the given \a area \a dx pixels to the right and \a dy
- downward; both \a dx and \a dy may be negative.
-
- Returns true if the area was scrolled successfully; false otherwise.
-*/
-bool QWindowSurface::scroll(const QRegion &area, int dx, int dy)
-{
- Q_UNUSED(area);
- Q_UNUSED(dx);
- Q_UNUSED(dy);
-
- return false;
-}
-
-/*!
- Returns a QImage pointer which represents the actual buffer the \a widget
- is drawn into or 0 if this is unavailable.
-
- You must call beginPaint() before you call this function and the returned
- pointer is only valid until endPaint() is called.
-*/
-QImage* QWindowSurface::buffer(const QWidget *widget)
-{
- if (widget->window() != window())
- return 0;
-
- QPaintDevice *pdev = paintDevice();
- if (!pdev || pdev->devType() != QInternal::Image)
- return 0;
-
- const QPoint off = offset(widget);
- QImage *img = static_cast<QImage*>(pdev);
-
- QRect rect(off, widget->size());
- rect &= QRect(QPoint(), img->size());
-
- if (rect.isEmpty())
- return 0;
-
- img = new QImage(img->scanLine(rect.y()) + rect.x() * img->depth() / 8,
- rect.width(), rect.height(),
- img->bytesPerLine(), img->format());
- d_ptr->bufferImages.append(img);
-
- return img;
-}
-
-/*!
- Returns a QPixmap generated from the part of the backing store
- corresponding to \a widget. Returns a null QPixmap if an error
- occurs. The contents of the pixmap are only defined for the regions
- of \a widget that have received paint events since the last resize
- of the backing store.
-
- If \a rectangle is a null rectangle (the default), the entire widget
- is grabbed. Otherwise, the grabbed area is limited to \a rectangle.
-
- The default implementation uses QWindowSurface::buffer().
-
- \sa QPixmap::grabWidget()
-*/
-QPixmap QWindowSurface::grabWidget(const QWidget *widget, const QRect &rectangle) const
-{
- QPixmap result;
-
- if (widget->window() != window())
- return result;
-
- const QImage *img = const_cast<QWindowSurface *>(this)->buffer(widget->window());
-
- if (!img || img->isNull())
- return result;
-
- QRect rect = rectangle.isEmpty() ? widget->rect() : (widget->rect() & rectangle);
-
- rect.translate(offset(widget) - offset(widget->window()));
- rect &= QRect(QPoint(), img->size());
-
- if (rect.isEmpty())
- return result;
-
- QImage subimg(img->scanLine(rect.y()) + rect.x() * img->depth() / 8,
- rect.width(), rect.height(),
- img->bytesPerLine(), img->format());
- subimg.detach(); //### expensive -- maybe we should have a real SubImage that shares reference count
-
- result = QPixmap::fromImage(subimg);
- return result;
-}
-
-/*!
- Returns the offset of \a widget in the coordinates of this
- window surface.
- */
-QPoint QWindowSurface::offset(const QWidget *widget) const
-{
- QWidget *window = d_ptr->window;
- QPoint offset = widget->mapTo(window, QPoint());
-#ifdef Q_WS_QWS
- offset += window->geometry().topLeft() - window->frameGeometry().topLeft();
-#endif
- return offset;
-}
-
-/*!
- \fn QRect QWindowSurface::rect(const QWidget *widget) const
-
- Returns the rectangle for \a widget in the coordinates of this
- window surface.
-*/
-
-void QWindowSurface::setStaticContents(const QRegion &region)
-{
- d_ptr->staticContents = region;
-}
-
-QRegion QWindowSurface::staticContents() const
-{
- return d_ptr->staticContents;
-}
-
-bool QWindowSurface::hasStaticContents() const
-{
- return hasFeature(QWindowSurface::StaticContents) && !d_ptr->staticContents.isEmpty();
-}
-
-QWindowSurface::WindowSurfaceFeatures QWindowSurface::features() const
-{
- return PartialUpdates | PreservedContents;
-}
-
-#ifdef Q_WS_QPA
-#define Q_EXPORT_SCROLLRECT Q_GUI_EXPORT
-#else
-#define Q_EXPORT_SCROLLRECT
-#endif
-
-void Q_EXPORT_SCROLLRECT qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset)
-{
- // make sure we don't detach
- uchar *mem = const_cast<uchar*>(const_cast<const QImage &>(img).bits());
-
- int lineskip = img.bytesPerLine();
- int depth = img.depth() >> 3;
-
- const QRect imageRect(0, 0, img.width(), img.height());
- const QRect r = rect & imageRect & imageRect.translated(-offset);
- const QPoint p = rect.topLeft() + offset;
-
- if (r.isEmpty())
- return;
-
- const uchar *src;
- uchar *dest;
-
- if (r.top() < p.y()) {
- src = mem + r.bottom() * lineskip + r.left() * depth;
- dest = mem + (p.y() + r.height() - 1) * lineskip + p.x() * depth;
- lineskip = -lineskip;
- } else {
- src = mem + r.top() * lineskip + r.left() * depth;
- dest = mem + p.y() * lineskip + p.x() * depth;
- }
-
- const int w = r.width();
- int h = r.height();
- const int bytes = w * depth;
-
- // overlapping segments?
- if (offset.y() == 0 && qAbs(offset.x()) < w) {
- do {
- ::memmove(dest, src, bytes);
- dest += lineskip;
- src += lineskip;
- } while (--h);
- } else {
- do {
- ::memcpy(dest, src, bytes);
- dest += lineskip;
- src += lineskip;
- } while (--h);
- }
-}
-
-QT_END_NAMESPACE
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