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Diffstat (limited to 'src/gui/painting/qwindowsurface_qws.cpp')
| -rw-r--r-- | src/gui/painting/qwindowsurface_qws.cpp | 1411 |
1 files changed, 1411 insertions, 0 deletions
diff --git a/src/gui/painting/qwindowsurface_qws.cpp b/src/gui/painting/qwindowsurface_qws.cpp new file mode 100644 index 0000000..1b7fd42 --- /dev/null +++ b/src/gui/painting/qwindowsurface_qws.cpp @@ -0,0 +1,1411 @@ +/**************************************************************************** +** +** 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 "qwindowsurface_qws_p.h" +#include <qwidget.h> +#include <qscreen_qws.h> +#include <qwsmanager_qws.h> +#include <qapplication.h> +#include <qwsdisplay_qws.h> +#include <qrgb.h> +#include <qpaintengine.h> +#include <qdesktopwidget.h> +#include <private/qapplication_p.h> +#include <private/qwsdisplay_qws_p.h> +#include <private/qwidget_p.h> +#include <private/qwsmanager_p.h> +#include <private/qwslock_p.h> +#include <private/qbackingstore_p.h> +#include <stdio.h> + +QT_BEGIN_NAMESPACE + +#ifdef Q_BACKINGSTORE_SUBSURFACES + +typedef QMap<int, QWSWindowSurface*> SurfaceMap; +Q_GLOBAL_STATIC(SurfaceMap, winIdToSurfaceMap); + +QWSWindowSurface* qt_findWindowSurface(int winId) +{ + return winIdToSurfaceMap()->value(winId); +} + +static void qt_insertWindowSurface(int winId, QWSWindowSurface *surface) +{ + if (!surface) + winIdToSurfaceMap()->remove(winId); + else + winIdToSurfaceMap()->insert(winId, surface); +} + +#endif // Q_BACKINGSTORE_SUBSURFACES + +inline bool isWidgetOpaque(const QWidget *w) +{ + return w->d_func()->isOpaque; +} + +static inline QScreen *getScreen(const QWidget *w) +{ + const QList<QScreen*> subScreens = qt_screen->subScreens(); + if (subScreens.isEmpty()) + return qt_screen; + + const int screen = QApplication::desktop()->screenNumber(w); + + return qt_screen->subScreens().at(screen < 0 ? 0 : screen); +} + +static int bytesPerPixel(QImage::Format format) +{ + switch (format) { + case QImage::Format_Invalid: + return 0; +#ifndef QT_NO_DEBUG + case QImage::Format_Mono: + case QImage::Format_MonoLSB: + qFatal("QWSWindowSurface: Invalid backingstore format: %i", + int(format)); +#endif + case QImage::Format_Indexed8: + return 1; + case QImage::Format_RGB32: + case QImage::Format_ARGB32: + case QImage::Format_ARGB32_Premultiplied: + return 4; + case QImage::Format_RGB16: + case QImage::Format_RGB555: + case QImage::Format_RGB444: + case QImage::Format_ARGB4444_Premultiplied: + return 2; + case QImage::Format_ARGB8565_Premultiplied: + case QImage::Format_ARGB8555_Premultiplied: + case QImage::Format_ARGB6666_Premultiplied: + case QImage::Format_RGB666: + case QImage::Format_RGB888: + return 3; + default: +#ifndef QT_NO_DEBUG + qFatal("QWSWindowSurface: Invalid backingstore format: %i", + int(format)); +#endif + return 0; + } +} + +static inline int nextMulOf4(int n) +{ + return ((n + 3) & 0xfffffffc); +} + +static inline void setImageMetrics(QImage &img, QWidget *window) { + QScreen *myScreen = getScreen(window); + if (myScreen) { + int dpmx = myScreen->width()*1000 / myScreen->physicalWidth(); + int dpmy = myScreen->height()*1000 / myScreen->physicalHeight(); + img.setDotsPerMeterX(dpmx); + img.setDotsPerMeterY(dpmy); + } +} + +void QWSWindowSurface::invalidateBuffer() +{ + + QWidget *win = window(); + if (win) { + win->d_func()->invalidateBuffer(win->rect()); +#ifndef QT_NO_QWS_MANAGER + QTLWExtra *topextra = win->d_func()->extra->topextra; + QWSManager *manager = topextra->qwsManager; + if (manager) + manager->d_func()->dirtyRegion(QDecoration::All, + QDecoration::Normal); +#endif + } +} + +QWSWindowSurfacePrivate::QWSWindowSurfacePrivate() + : flags(0), +#ifdef QT_QWS_CLIENTBLIT + directId(-1), +#endif + winId(0) +{ +} + +void QWSWindowSurfacePrivate::setWinId(int id) +{ + winId = id; +} + +int QWSWindowSurface::winId() const +{ + // XXX: the widget winId may change during the lifetime of the widget!!! + + const QWidget *win = window(); + if (win && win->isWindow()) + return win->internalWinId(); + +#ifdef Q_BACKINGSTORE_SUBSURFACES + if (!d_ptr->winId) { + QWSWindowSurface *that = const_cast<QWSWindowSurface*>(this); + QWSDisplay *display = QWSDisplay::instance(); + const int id = display->takeId(); + qt_insertWindowSurface(id, that); + that->d_ptr->winId = id; + + if (win) + display->nameRegion(id, win->objectName(), win->windowTitle()); + else + display->nameRegion(id, QString(), QString()); + + display->setAltitude(id, 1, true); // XXX + } +#endif + + return d_ptr->winId; +} + +void QWSWindowSurface::setWinId(int id) +{ + d_ptr->winId = id; +} + +/*! + \class QWSWindowSurface + \since 4.2 + \ingroup qws + \preliminary + \internal + + \brief The QWSWindowSurface class provides the drawing area for top-level + windows in Qt for Embedded Linux. + + Note that this class is only available in Qt for Embedded Linux. + + In \l{Qt for Embedded Linux}, the default behavior is for each client to + render its widgets into memory while the server is responsible for + putting the contents of the memory onto the + screen. QWSWindowSurface is used by the window system to implement + the associated memory allocation. + + When a screen update is required, the server runs through all the + top-level windows that intersect with the region that is about to + be updated, and ensures that the associated clients have updated + their memory buffer. Then the server uses the screen driver to + copy the content of the memory to the screen. To locate the + relevant parts of memory, the driver is provided with the list of + top-level windows that intersect with the given region. Associated + with each of the top-level windows there is a window surface + representing the drawing area of the window. + + When deriving from the QWSWindowSurface class, e.g., when adding + an \l {Adding an Accelerated Graphics Driver to Qt for Embedded Linux} + {accelerated graphics driver}, there are several pure virtual + functions that must be implemented. In addition, QWSWindowSurface + provides several virtual functions that can be reimplemented to + customize the drawing process. + + \tableofcontents + + \section1 Pure Virtual Functions + + There are in fact two window surface instances for each top-level + window; one used by the application when drawing a window, and + another used by the server application to perform window + compositioning. Implement the attach() to create the server-side + representation of the surface. The data() function must be + implemented to provide the required data. + + Implement the key() function to uniquely identify the surface + class, and the isValid() function to determine is a surface + corresponds to a given widget. + + The geometry() function must be implemented to let the window + system determine the area required by the window surface + (QWSWindowSurface also provides a corresponding virtual + setGeometry() function that is called whenever the area necessary + for the top-level window to be drawn, changes). The image() + function is called by the window system during window + compositioning, and must be implemented to return an image of the + top-level window. + + Finally, the paintDevice() function must be implemented to return + the appropriate paint device, and the scroll() function must be + implemented to scroll the given region of the surface the given + number of pixels. + + \section1 Virtual Functions + + When painting onto the surface, the window system will always call + the beginPaint() function before any painting operations are + performed. Likewise the endPaint() function is automatically + called when the painting is done. Reimplement the painterOffset() + function to alter the offset that is applied when drawing. + + The window system uses the flush() function to put a given region + of the widget onto the screen, and the release() function to + deallocate the screen region corresponding to this window surface. + + \section1 Other Members + + QWSWindowSurface provides the window() function returning a + pointer to the top-level window the surface is representing. The + currently visible region of the associated widget can be retrieved + and set using the clipRegion() and setClipRegion() functions, + respectively. + + When the window system performs the window compositioning, it uses + the SurfaceFlag enum describing the surface content. The currently + set surface flags can be retrieved and altered using the + surfaceFlags() and setSurfaceFlags() functions. In addition, + QWSWindowSurface provides the isBuffered(), isOpaque() and + isRegionReserved() convenience functions. + + \sa {Qt for Embedded Linux Architecture#Drawing on Screen}{Qt for + Embedded Linux Architecture} +*/ + +/*! + \enum QWSWindowSurface::SurfaceFlag + + This enum is used to describe the window surface's contents. It + is used by the screen driver to handle region allocation and + composition. + + \value RegionReserved The surface contains a reserved area. Once + allocated, a reserved area can not not be changed by the window + system, i.e., no other widgets can be drawn on top of this. + + \value Buffered + The surface is in a memory area which is not part of a framebuffer. + (A top-level window with QWidget::windowOpacity() other than 1.0 must use + a buffered surface in order to making blending with the background work.) + + \value Opaque + The surface contains only opaque pixels. + + \sa surfaceFlags(), setSurfaceFlags() +*/ + +/*! + \fn bool QWSWindowSurface::isValid() const + \since 4.3 + + Implement this function to return true if the surface is a valid + surface for the given top-level \a window; otherwise return + false. + + \sa window(), key() +*/ + +/*! + \fn QString QWSWindowSurface::key() const + + Implement this function to return a string that uniquely + identifies the class of this surface. + + \sa window(), isValid() +*/ + +/*! + \fn QByteArray QWSWindowSurface::permanentState() const + \since 4.3 + + Implement this function to return the data required for creating a + server-side representation of the surface. + + \sa attach() +*/ + +/*! + \fn void QWSWindowSurface::setPermanentState(const QByteArray &data) + \since 4.3 + + Implement this function to attach a server-side surface instance + to the corresponding client side instance using the given \a + data. Return true if successful; otherwise return false. + + \sa data() +*/ + +/*! + \fn const QImage QWSWindowSurface::image() const + + Implement this function to return an image of the top-level window. + + \sa geometry() +*/ + +/*! + \fn bool QWSWindowSurface::isRegionReserved() const + + Returns true if the QWSWindowSurface::RegionReserved is set; otherwise + returns false. + + \sa surfaceFlags() +*/ + +/*! + \fn bool QWSWindowSurface::isBuffered() const + + Returns true if the QWSWindowSurface::Buffered is set; otherwise returns false. + + \sa surfaceFlags() +*/ + +/*! + \fn bool QWSWindowSurface::isOpaque() const + + Returns true if the QWSWindowSurface::Opaque is set; otherwise + returns false. + + \sa surfaceFlags() +*/ + + +/*! + Constructs an empty surface. +*/ +QWSWindowSurface::QWSWindowSurface() + : QWindowSurface(0), d_ptr(new QWSWindowSurfacePrivate) +{ +} + +/*! + Constructs an empty surface for the given top-level \a widget. +*/ +QWSWindowSurface::QWSWindowSurface(QWidget *widget) + : QWindowSurface(widget), d_ptr(new QWSWindowSurfacePrivate) +{ +} + +QWSWindowSurface::~QWSWindowSurface() +{ +#ifdef Q_BACKINGSTORE_SUBSURFACES + winIdToSurfaceMap()->remove(winId()); +#endif + + delete d_ptr; +} + +/*! + Returns the offset to be used when painting. + + \sa paintDevice() +*/ +QPoint QWSWindowSurface::painterOffset() const +{ + const QWidget *w = window(); + if (!w) + return QPoint(); + return w->geometry().topLeft() - w->frameGeometry().topLeft(); +} + +void QWSWindowSurface::beginPaint(const QRegion &) +{ + lock(); +} + +void QWSWindowSurface::endPaint(const QRegion &) +{ + unlock(); +} + +// XXX: documentation!!! +QByteArray QWSWindowSurface::transientState() const +{ + return QByteArray(); +} + +QByteArray QWSWindowSurface::permanentState() const +{ + return QByteArray(); +} + +void QWSWindowSurface::setTransientState(const QByteArray &state) +{ + Q_UNUSED(state); +} + +void QWSWindowSurface::setPermanentState(const QByteArray &state) +{ + Q_UNUSED(state); +} + +bool QWSWindowSurface::lock(int timeout) +{ + Q_UNUSED(timeout); + return true; +} + +void QWSWindowSurface::unlock() +{ +} + +#ifdef QT_QWS_CLIENTBLIT +/*! \internal */ +const QRegion QWSWindowSurface::directRegion() const +{ + return d_ptr->direct; +} + +/*! \internal */ +int QWSWindowSurface::directRegionId() const +{ + return d_ptr->directId; +} + +/*! \internal */ +void QWSWindowSurface::setDirectRegion(const QRegion &r, int id) +{ + d_ptr->direct = r; + d_ptr->directId = id; +} +#endif + +/*! + Returns the region currently visible on the screen. + + \sa setClipRegion() +*/ +const QRegion QWSWindowSurface::clipRegion() const +{ + return d_ptr->clip; +} + +/*! + Sets the region currently visible on the screen to be the given \a + clip region. + + \sa clipRegion() +*/ +void QWSWindowSurface::setClipRegion(const QRegion &clip) +{ + if (clip == d_ptr->clip) + return; + + QRegion expose = (clip - d_ptr->clip); + d_ptr->clip = clip; + + if (expose.isEmpty() || clip.isEmpty()) + return; // No repaint or flush required. + + QWidget *win = window(); + if (!win) + return; + + if (isBuffered()) { + // No repaint required. Flush exposed area via the backing store. + win->d_func()->syncBackingStore(expose); + return; + } + +#ifndef QT_NO_QWS_MANAGER + // Invalidate exposed decoration area. + if (win && win->isWindow()) { + QTLWExtra *topextra = win->d_func()->extra->topextra; + if (QWSManager *manager = topextra->qwsManager) { + QRegion decorationExpose(manager->region()); + decorationExpose.translate(-win->geometry().topLeft()); + decorationExpose &= expose; + if (!decorationExpose.isEmpty()) { + expose -= decorationExpose; + manager->d_func()->dirtyRegion(QDecoration::All, QDecoration::Normal, decorationExpose); + } + } + } +#endif + + // Invalidate exposed widget area. + win->d_func()->invalidateBuffer(expose); +} + +/*! + Returns the surface flags describing the contents of this surface. + + \sa isBuffered(), isOpaque(), isRegionReserved() +*/ +QWSWindowSurface::SurfaceFlags QWSWindowSurface::surfaceFlags() const +{ + return d_ptr->flags; +} + +/*! + Sets the surface flags describing the contents of this surface, to + be the given \a flags. + + \sa surfaceFlags() +*/ +void QWSWindowSurface::setSurfaceFlags(SurfaceFlags flags) +{ + d_ptr->flags = flags; +} + +void QWSWindowSurface::setGeometry(const QRect &rect) +{ + QRegion mask = rect; + + const QWidget *win = window(); + if (win) { +#ifndef QT_NO_QWS_MANAGER + if (win->isWindow()) { + QTLWExtra *topextra = win->d_func()->extra->topextra; + QWSManager *manager = topextra->qwsManager; + + if (manager) { + // The frame geometry is the bounding rect of manager->region, + // which could be too much, so we need to clip. + mask &= (manager->region() + win->geometry()); + } + } +#endif + + const QRegion winMask = win->mask(); + if (!winMask.isEmpty()) + mask &= winMask.translated(win->geometry().topLeft()); + } + + setGeometry(rect, mask); +} + +void QWSWindowSurface::setGeometry(const QRect &rect, const QRegion &mask) +{ + if (rect == geometry()) // XXX: && mask == prevMask + return; + + const bool isResize = rect.size() != geometry().size(); + const bool needsRepaint = isResize || !isBuffered(); + + QWindowSurface::setGeometry(rect); + + const QRegion region = mask & rect; + QWidget *win = window(); + // Only request regions for widgets visible on the screen. + // (Added the !win check for compatibility reasons, because + // there was no "if (win)" check before). + const bool requestQWSRegion = !win || !win->testAttribute(Qt::WA_DontShowOnScreen); + if (requestQWSRegion) + QWidget::qwsDisplay()->requestRegion(winId(), key(), permanentState(), region); + + if (needsRepaint) + invalidateBuffer(); + + if (!requestQWSRegion) { + // We didn't request a region, hence we won't get a QWSRegionEvent::Allocation + // event back from the server so we set the clip directly. We have to + // do this after the invalidateBuffer() call above, as it might trigger a + // backing store sync, resulting in too many update requests. + setClipRegion(region); + } +} + +static inline void flushUpdate(QWidget *widget, const QRegion ®ion, + const QPoint &offset) +{ +#ifdef QT_NO_PAINT_DEBUG + Q_UNUSED(widget); + Q_UNUSED(region); + Q_UNUSED(offset); +#else + static int delay = -1; + + if (delay == -1) + delay = qgetenv("QT_FLUSH_UPDATE").toInt() * 10; + + if (delay == 0) + return; + + static QWSYellowSurface surface(true); + surface.setDelay(delay); + surface.flush(widget, region, offset); +#endif // QT_NO_PAINT_DEBUG +} + +void QWSWindowSurface::flush(QWidget *widget, const QRegion ®ion, + const QPoint &offset) +{ + const QWidget *win = window(); + if (!win) + return; + + QWExtra *extra = win->d_func()->extra; + if (extra && extra->proxyWidget) + return; + + Q_UNUSED(offset); + + const bool opaque = isOpaque(); +#ifdef QT_QWS_DISABLE_FLUSHCLIPPING + QRegion toFlush = region; +#else + QRegion toFlush = region & d_ptr->clip; +#endif + + if (!toFlush.isEmpty()) { + flushUpdate(widget, toFlush, QPoint(0, 0)); + QPoint globalZero = win->mapToGlobal(QPoint(0, 0)); + toFlush.translate(globalZero); + +#ifdef QT_QWS_CLIENTBLIT + bool needRepaint = true; + if (opaque) { + QScreen* widgetScreen = getScreen(widget); + if (widgetScreen->supportsBlitInClients()) { + + QWSDisplay::grab(); + if(directRegion().intersected(toFlush) == toFlush) { + QPoint translate = -globalZero + painterOffset() + geometry().topLeft(); + QRegion flushRegion = toFlush.translated(translate); + widgetScreen->blit(image(), geometry().topLeft(), flushRegion); + widgetScreen->setDirty(toFlush.boundingRect()); + needRepaint = false; + } + QWSDisplay::ungrab(); + } + } + + if(needRepaint) +#endif + win->qwsDisplay()->repaintRegion(winId(), win->windowFlags(), opaque, toFlush); + } +} + +/*! + Move the surface with the given \a offset. + + A subclass may reimplement this function to enable accelerated window move. + It must return true if the move was successful and no repaint is necessary, + false otherwise. + + The default implementation updates the QWindowSurface geometry and + returns true if the surface is buffered; false otherwise. + + This function is called by the window system on the client instance. + + \sa isBuffered() +*/ +bool QWSWindowSurface::move(const QPoint &offset) +{ + QWindowSurface::setGeometry(geometry().translated(offset)); + return isBuffered(); +} + +/*! + Move the surface with the given \a offset. + + The new visible region after the window move is given by \a newClip + in screen coordinates. + + A subclass may reimplement this function to enable accelerated window move. + The returned region indicates the area that still needs to be composed + on the screen. + + The default implementation updates the QWindowSurface geometry and + returns the union of the old and new geometry. + + This function is called by the window system on the server instance. +*/ +QRegion QWSWindowSurface::move(const QPoint &offset, const QRegion &newClip) +{ + const QRegion oldGeometry = geometry(); + QWindowSurface::setGeometry(geometry().translated(offset)); + return oldGeometry + newClip; +} + +void QWSWindowSurface::releaseSurface() +{ +} + +bool QWSMemorySurface::lock(int timeout) +{ + Q_UNUSED(timeout); +#ifndef QT_NO_QWS_MULTIPROCESS + if (memlock && !memlock->lock(QWSLock::BackingStore)) + return false; +#endif +#ifndef QT_NO_THREAD + threadLock.lock(); +#endif + return true; +} + +void QWSMemorySurface::unlock() +{ +#ifndef QT_NO_THREAD + threadLock.unlock(); +#endif +#ifndef QT_NO_QWS_MULTIPROCESS + if (memlock) + memlock->unlock(QWSLock::BackingStore); +#endif +} + +QWSMemorySurface::QWSMemorySurface() + : QWSWindowSurface() +#ifndef QT_NO_QWS_MULTIPROCESS + , memlock(0) +#endif +{ + setSurfaceFlags(Buffered); +} + +QWSMemorySurface::QWSMemorySurface(QWidget *w) + : QWSWindowSurface(w) +{ + SurfaceFlags flags = Buffered; + if (isWidgetOpaque(w)) + flags |= Opaque; + setSurfaceFlags(flags); + +#ifndef QT_NO_QWS_MULTIPROCESS + memlock = QWSDisplay::Data::getClientLock(); +#endif +} + +QWSMemorySurface::~QWSMemorySurface() +{ +} + + +QImage::Format +QWSMemorySurface::preferredImageFormat(const QWidget *widget) const +{ + QScreen *screen = getScreen(widget); + const int depth = screen->depth(); + const bool opaque = isWidgetOpaque(widget); + + if (!opaque) { + if (depth <= 12) + return QImage::Format_ARGB4444_Premultiplied; + else if (depth <= 15) + return QImage::Format_ARGB8555_Premultiplied; + else if (depth <= 16) + return QImage::Format_ARGB8565_Premultiplied; + else if (depth <= 18) + return QImage::Format_ARGB6666_Premultiplied; + else + return QImage::Format_ARGB32_Premultiplied; + } + + QImage::Format format = screen->pixelFormat(); + if (format > QImage::Format_Indexed8) // ### assumes all new image formats supports a QPainter + return format; + + if (depth <= 12) + return QImage::Format_RGB444; + else if (depth <= 15) + return QImage::Format_RGB555; + else if (depth <= 16) + return QImage::Format_RGB16; + else if (depth <= 18) + return QImage::Format_RGB666; + else if (depth <= 24) + return QImage::Format_RGB888; + else + return QImage::Format_ARGB32_Premultiplied; +} + +#ifndef QT_NO_QWS_MULTIPROCESS +void QWSMemorySurface::setLock(int lockId) +{ + if (memlock && memlock->id() == lockId) + return; + delete memlock; + memlock = (lockId == -1 ? 0 : new QWSLock(lockId)); + return; +} +#endif // QT_NO_QWS_MULTIPROCESS + +bool QWSMemorySurface::isValid() const +{ + if (img.isNull()) + return true; + + const QWidget *win = window(); + if (preferredImageFormat(win) != img.format()) + return false; + + if (isOpaque() != isWidgetOpaque(win)) // XXX: use QWidgetPrivate::isOpaque() + return false; + + return true; +} + +// from qwindowsurface.cpp +extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset); + +bool QWSMemorySurface::scroll(const QRegion &area, int dx, int dy) +{ + const QVector<QRect> rects = area.rects(); + for (int i = 0; i < rects.size(); ++i) + qt_scrollRectInImage(img, rects.at(i), QPoint(dx, dy)); + + return true; +} + +QPoint QWSMemorySurface::painterOffset() const +{ + const QWidget *w = window(); + if (!w) + return QPoint(); + + if (w->mask().isEmpty()) + return QWSWindowSurface::painterOffset(); + + const QRegion region = w->mask() + & w->frameGeometry().translated(-w->geometry().topLeft()); + return -region.boundingRect().topLeft(); +} + +QWSLocalMemSurface::QWSLocalMemSurface() + : QWSMemorySurface(), mem(0), memsize(0) +{ +} + +QWSLocalMemSurface::QWSLocalMemSurface(QWidget *w) + : QWSMemorySurface(w), mem(0), memsize(0) +{ +} + +QWSLocalMemSurface::~QWSLocalMemSurface() +{ + if (memsize) + delete[] mem; +} + +void QWSLocalMemSurface::setGeometry(const QRect &rect) +{ + QSize size = rect.size(); + + QWidget *win = window(); + if (win && !win->mask().isEmpty()) { + const QRegion region = win->mask() + & rect.translated(-win->geometry().topLeft()); + size = region.boundingRect().size(); + } + + uchar *deleteLater = 0; + // In case of a Hide event we need to delete the memory after sending the + // event to the server in order to let the server animate the event. + if (size.isEmpty()) { + deleteLater = mem; + mem = 0; + } + + if (img.size() != size) { + delete[] mem; + if (size.isEmpty()) { + mem = 0; + img = QImage(); + } else { + const QImage::Format format = preferredImageFormat(win); + const int bpl = nextMulOf4(bytesPerPixel(format) * size.width()); + const int memsize = bpl * size.height(); + mem = new uchar[memsize]; + img = QImage(mem, size.width(), size.height(), bpl, format); + setImageMetrics(img, win); + } + } + + QWSWindowSurface::setGeometry(rect); + delete[] deleteLater; +} + +QByteArray QWSLocalMemSurface::permanentState() const +{ + QByteArray array; + array.resize(sizeof(uchar*) + 3 * sizeof(int) + + sizeof(SurfaceFlags)); + + char *ptr = array.data(); + + *reinterpret_cast<uchar**>(ptr) = mem; + ptr += sizeof(uchar*); + + reinterpret_cast<int*>(ptr)[0] = img.width(); + reinterpret_cast<int*>(ptr)[1] = img.height(); + ptr += 2 * sizeof(int); + + *reinterpret_cast<int *>(ptr) = img.format(); + ptr += sizeof(int); + + *reinterpret_cast<SurfaceFlags*>(ptr) = surfaceFlags(); + + return array; +} + +void QWSLocalMemSurface::setPermanentState(const QByteArray &data) +{ + int width; + int height; + QImage::Format format; + SurfaceFlags flags; + + const char *ptr = data.constData(); + + mem = *reinterpret_cast<uchar* const*>(ptr); + ptr += sizeof(uchar*); + + width = reinterpret_cast<const int*>(ptr)[0]; + height = reinterpret_cast<const int*>(ptr)[1]; + ptr += 2 * sizeof(int); + + format = QImage::Format(*reinterpret_cast<const int*>(ptr)); + ptr += sizeof(int); + + flags = *reinterpret_cast<const SurfaceFlags*>(ptr); + + const int bpl = nextMulOf4(bytesPerPixel(format) * width); + QWSMemorySurface::img = QImage(mem, width, height, bpl, format); + setSurfaceFlags(flags); +} + +void QWSLocalMemSurface::releaseSurface() +{ + mem = 0; + img = QImage(); +} + +#ifndef QT_NO_QWS_MULTIPROCESS + +QWSSharedMemSurface::QWSSharedMemSurface() + : QWSMemorySurface() +{ +} + +QWSSharedMemSurface::QWSSharedMemSurface(QWidget *widget) + : QWSMemorySurface(widget) +{ +} + +QWSSharedMemSurface::~QWSSharedMemSurface() +{ + // mem.detach() is done automatically by ~QSharedMemory +} + +bool QWSSharedMemSurface::setMemory(int memId) +{ + if (mem.id() == memId) + return true; + + mem.detach(); + if (!mem.attach(memId)) { + perror("QWSSharedMemSurface: attaching to shared memory"); + qCritical("QWSSharedMemSurface: Error attaching to" + " shared memory 0x%x", memId); + return false; + } + + return true; +} + +#ifdef QT_QWS_CLIENTBLIT +void QWSSharedMemSurface::setDirectRegion(const QRegion &r, int id) +{ + QWSMemorySurface::setDirectRegion(r, id); + if(mem.address()) + *(uint *)mem.address() = id; +} + +const QRegion QWSSharedMemSurface::directRegion() const +{ + QWSSharedMemory *cmem = const_cast<QWSSharedMemory *>(&mem); + if (cmem->address() && ((int*)cmem->address())[0] == directRegionId()) + return QWSMemorySurface::directRegion(); + else + return QRegion(); +} +#endif + +void QWSSharedMemSurface::setPermanentState(const QByteArray &data) +{ + int memId; + int width; + int height; + int lockId; + QImage::Format format; + SurfaceFlags flags; + + const int *ptr = reinterpret_cast<const int*>(data.constData()); + + memId = ptr[0]; + width = ptr[1]; + height = ptr[2]; + lockId = ptr[3]; + format = QImage::Format(ptr[4]); + flags = SurfaceFlags(ptr[5]); + + setSurfaceFlags(flags); + setMemory(memId); + setLock(lockId); + +#ifdef QT_QWS_CLIENTBLIT + uchar *base = static_cast<uchar*>(mem.address()) + sizeof(uint); +#else + uchar *base = static_cast<uchar*>(mem.address()); +#endif + const int bpl = nextMulOf4(bytesPerPixel(format) * width); + QWSMemorySurface::img = QImage(base, width, height, bpl, format); +} + +void QWSSharedMemSurface::setGeometry(const QRect &rect) +{ + const QSize size = rect.size(); + if (img.size() != size) { + if (size.isEmpty()) { + mem.detach(); + img = QImage(); + } else { + mem.detach(); + + QWidget *win = window(); + const QImage::Format format = preferredImageFormat(win); + const int bpl = nextMulOf4(bytesPerPixel(format) * size.width()); +#ifdef QT_QWS_CLIENTBLIT + const int imagesize = bpl * size.height() + sizeof(uint); +#else + const int imagesize = bpl * size.height(); +#endif + if (!mem.create(imagesize)) { + perror("QWSSharedMemSurface::setGeometry allocating shared memory"); + qFatal("Error creating shared memory of size %d", imagesize); + } +#ifdef QT_QWS_CLIENTBLIT + *((uint *)mem.address()) = 0; + uchar *base = static_cast<uchar*>(mem.address()) + sizeof(uint); +#else + uchar *base = static_cast<uchar*>(mem.address()); +#endif + img = QImage(base, size.width(), size.height(), bpl, format); + setImageMetrics(img, win); + } + } + + QWSWindowSurface::setGeometry(rect); +} + +QByteArray QWSSharedMemSurface::permanentState() const +{ + QByteArray array; + array.resize(6 * sizeof(int)); + + int *ptr = reinterpret_cast<int*>(array.data()); + + ptr[0] = mem.id(); + ptr[1] = img.width(); + ptr[2] = img.height(); + ptr[3] = (memlock ? memlock->id() : -1); + ptr[4] = int(img.format()); + ptr[5] = int(surfaceFlags()); + + return array; +} + +void QWSSharedMemSurface::releaseSurface() +{ + mem.detach(); + img = QImage(); +} + +#endif // QT_NO_QWS_MULTIPROCESS + +#ifndef QT_NO_PAINTONSCREEN + +QWSOnScreenSurface::QWSOnScreenSurface(QWidget *w) + : QWSMemorySurface(w) +{ + attachToScreen(getScreen(w)); + setSurfaceFlags(Opaque); +} + +QWSOnScreenSurface::QWSOnScreenSurface() + : QWSMemorySurface() +{ + setSurfaceFlags(Opaque); +} + +void QWSOnScreenSurface::attachToScreen(const QScreen *s) +{ + screen = s; + uchar *base = screen->base(); + QImage::Format format = screen->pixelFormat(); + + if (format == QImage::Format_Invalid || format == QImage::Format_Indexed8) { + //### currently we have no paint engine for indexed image formats + qFatal("QWSOnScreenSurface::attachToScreen(): screen depth %d " + "not implemented", screen->depth()); + return; + } + QWSMemorySurface::img = QImage(base, screen->width(), screen->height(), + screen->linestep(), format ); +} + +QWSOnScreenSurface::~QWSOnScreenSurface() +{ +} + +QPoint QWSOnScreenSurface::painterOffset() const +{ + return geometry().topLeft() + QWSWindowSurface::painterOffset(); +} + +bool QWSOnScreenSurface::isValid() const +{ + const QWidget *win = window(); + if (screen != getScreen(win)) + return false; + if (img.isNull()) + return false; + return QScreen::isWidgetPaintOnScreen(win); +} + +QByteArray QWSOnScreenSurface::permanentState() const +{ + QByteArray array; + array.resize(sizeof(int)); + int *ptr = reinterpret_cast<int*>(array.data()); + ptr[0] = QApplication::desktop()->screenNumber(window()); + return array; +} + +void QWSOnScreenSurface::setPermanentState(const QByteArray &data) +{ + const int *ptr = reinterpret_cast<const int*>(data.constData()); + const int screenNo = ptr[0]; + + QScreen *screen = qt_screen; + if (screenNo > 0) + screen = qt_screen->subScreens().at(screenNo); + attachToScreen(screen); +} + +#endif // QT_NO_PAINTONSCREEN + +#ifndef QT_NO_PAINT_DEBUG + +QWSYellowSurface::QWSYellowSurface(bool isClient) + : QWSWindowSurface(), delay(10) +{ + if (isClient) { + setWinId(QWidget::qwsDisplay()->takeId()); + QWidget::qwsDisplay()->nameRegion(winId(), + QLatin1String("Debug flush paint"), + QLatin1String("Silly yellow thing")); + QWidget::qwsDisplay()->setAltitude(winId(), 1, true); + } + setSurfaceFlags(Buffered); +} + +QWSYellowSurface::~QWSYellowSurface() +{ +} + +QByteArray QWSYellowSurface::permanentState() const +{ + QByteArray array; + array.resize(2 * sizeof(int)); + + int *ptr = reinterpret_cast<int*>(array.data()); + ptr[0] = surfaceSize.width(); + ptr[1] = surfaceSize.height(); + + return array; +} + +void QWSYellowSurface::setPermanentState(const QByteArray &data) +{ + const int *ptr = reinterpret_cast<const int*>(data.constData()); + + const int width = ptr[0]; + const int height = ptr[1]; + + img = QImage(width, height, QImage::Format_ARGB32); + img.fill(qRgba(255,255,31,127)); +} + +void QWSYellowSurface::flush(QWidget *widget, const QRegion ®ion, + const QPoint &offset) +{ + Q_UNUSED(offset); + + QWSDisplay *display = QWidget::qwsDisplay(); + QRegion rgn = region; + + if (widget) + rgn.translate(widget->mapToGlobal(QPoint(0, 0))); + + surfaceSize = region.boundingRect().size(); + + const int id = winId(); + display->requestRegion(id, key(), permanentState(), rgn); + display->setAltitude(id, 1, true); + display->repaintRegion(id, 0, false, rgn); + + ::usleep(500 * delay); + display->requestRegion(id, key(), permanentState(), QRegion()); + ::usleep(500 * delay); +} + +#endif // QT_NO_PAINT_DEBUG + +#ifndef QT_NO_DIRECTPAINTER + +static inline QScreen *getPrimaryScreen() +{ + QScreen *screen = QScreen::instance(); + if (!screen->base()) { + QList<QScreen*> subScreens = screen->subScreens(); + if (subScreens.size() < 1) + return 0; + screen = subScreens.at(0); + } + return screen; +} + +QWSDirectPainterSurface::QWSDirectPainterSurface(bool isClient, + QDirectPainter::SurfaceFlag flags) + : QWSWindowSurface(), flushingRegionEvents(false), doLocking(false) +{ + setSurfaceFlags(Opaque); + synchronous = (flags == QDirectPainter::ReservedSynchronous); + + if (isClient) { + setWinId(QWidget::qwsDisplay()->takeId()); + QWidget::qwsDisplay()->nameRegion(winId(), + QLatin1String("QDirectPainter reserved space"), + QLatin1String("reserved")); + } else { + setWinId(0); + } + _screen = QScreen::instance(); + if (!_screen->base()) { + QList<QScreen*> subScreens = _screen->subScreens(); + if (subScreens.size() < 1) + _screen = 0; + else + _screen = subScreens.at(0); + } +} + +QWSDirectPainterSurface::~QWSDirectPainterSurface() +{ + if (winId() && QWSDisplay::instance()) // make sure not in QApplication destructor + QWidget::qwsDisplay()->destroyRegion(winId()); +} + +void QWSDirectPainterSurface::setRegion(const QRegion ®ion) +{ + const int id = winId(); + QWidget::qwsDisplay()->requestRegion(id, key(), permanentState(), region); +#ifndef QT_NO_QWS_MULTIPROCESS + if (synchronous) + QWSDisplay::instance()->d->waitForRegionAck(id); +#endif +} + +void QWSDirectPainterSurface::flush(QWidget *, const QRegion &r, const QPoint &) +{ + QWSDisplay::instance()->repaintRegion(winId(), 0, true, r); +} + +QByteArray QWSDirectPainterSurface::permanentState() const +{ + QByteArray res; + if (isRegionReserved()) + res.append( 'r'); + return res; +} + +void QWSDirectPainterSurface::setPermanentState(const QByteArray &ba) +{ + if (ba.size() > 0 && ba.at(0) == 'r') + setReserved(); + setSurfaceFlags(surfaceFlags() | Opaque); +} + +void QWSDirectPainterSurface::beginPaint(const QRegion ®ion) +{ + QWSWindowSurface::beginPaint(region); +#ifndef QT_NO_QWS_MULTIPROCESS + if (!synchronous) { + flushingRegionEvents = true; + QWSDisplay::instance()->d->waitForRegionEvents(winId(), doLocking); + flushingRegionEvents = false; + } +#endif +} + +bool QWSDirectPainterSurface::hasPendingRegionEvents() const +{ +#ifndef QT_NO_QWS_MULTIPROCESS + if (synchronous) + return false; + + return QWSDisplay::instance()->d->hasPendingRegionEvents(); +#else + return false; +#endif +} + +bool QWSDirectPainterSurface::lock(int timeout) +{ +#ifndef QT_NO_THREAD + threadLock.lock(); +#endif + Q_UNUSED(timeout); + if (doLocking) + QWSDisplay::grab(true); + return true; +} + +void QWSDirectPainterSurface::unlock() +{ + if (doLocking) + QWSDisplay::ungrab(); +#ifndef QT_NO_THREAD + threadLock.unlock(); +#endif +} + +#endif // QT_NO_DIRECTPAINTER + +QT_END_NAMESPACE |