QWindowSurface *QGLGraphicsSystem::createWindowSurface(QWidget *widget) const
{
#ifdef Q_WS_WIN
// On Windows the QGLWindowSurface class can't handle
// drop shadows and native effects, e.g. fading a menu in/out using
// top level window opacity.
if (widget->windowType() == Qt::Popup)
return new QRasterWindowSurface(widget);
#endif
#if defined(Q_WS_X11) && !defined(QT_NO_EGL)
if (m_useX11GL && QX11GLPixmapData::hasX11GLPixmaps()) {
// If the widget is a QGraphicsView which will be re-drawing the entire
// scene each frame anyway, we should use QGLWindowSurface as this may
// provide proper buffer flipping, which should be faster than QX11GL's
// blitting approach:
QGraphicsView* qgv = qobject_cast<QGraphicsView*>(widget);
if (qgv && qgv->viewportUpdateMode() == QGraphicsView::FullViewportUpdate)
return new QGLWindowSurface(widget);
else
return new QX11GLWindowSurface(widget);
}
#endif
#if defined(Q_OS_SYMBIAN)
if (!QApplicationPrivate::instance()->useTranslucentEGLSurfaces) {
QWidgetPrivate *d = qt_widget_private(widget);
if (!d->isOpaque && widget->testAttribute(Qt::WA_TranslucentBackground))
return d->createDefaultWindowSurface_sys();
}
#endif
return new QGLWindowSurface(widget);
}
void QAbstractScrollAreaPrivate::setSingleFingerPanEnabled(bool on)
{
singleFingerPanEnabled = on;
QWidgetPrivate *dd = static_cast<QWidgetPrivate *>(QObjectPrivate::get(viewport));
if (dd)
dd->winSetupGestures();
}
QPlatformScreen * QPlatformScreen::platformScreenForWidget(const QWidget *widget)
{
QWidget *window = widget->window();
QWidgetPrivate *windowPrivate = qt_widget_private(window);
QTLWExtra * topData = windowPrivate->topData();
QPlatformIntegration *integration =
QApplicationPrivate::platformIntegration();
return integration->screens()[topData->screenIndex];
}
void markParentChain() {
Q_Q(QWindowContainer);
QWidget *p = q;
while (p) {
QWidgetPrivate *d = static_cast<QWidgetPrivate *>(QWidgetPrivate::get(p));
d->createExtra();
d->extra->hasWindowContainer = true;
p = p->parentWidget();
}
}
QWindowSurface *QVGGraphicsSystem::createWindowSurface(QWidget *widget) const
{
#if defined(Q_OS_SYMBIAN)
if (!QApplicationPrivate::instance()->useTranslucentEGLSurfaces) {
QWidgetPrivate *d = qt_widget_private(widget);
if (!d->isOpaque && widget->testAttribute(Qt::WA_TranslucentBackground))
return d->createDefaultWindowSurface_sys();
}
#endif
return new QVGWindowSurface(widget);
}
QGesture *QWinNativePanGestureRecognizer::create(QObject *target)
{
if (!target)
return new QPanGesture; // a special case
if (!target->isWidgetType())
return 0;
if (qobject_cast<QGraphicsObject *>(target))
return 0;
QWidget *q = static_cast<QWidget *>(target);
QWidgetPrivate *d = q->d_func();
d->nativeGesturePanEnabled = true;
d->winSetupGestures();
return new QPanGesture;
}
/*!
Returns the static content inside the \a parent if non-zero; otherwise the static content
for the entire backing store is returned. The content will be clipped to \a withinClipRect
if non-empty.
*/
QRegion QWidgetBackingStore::staticContents(QWidget *parent, const QRect &withinClipRect) const
{
if (!parent && tlw->testAttribute(Qt::WA_StaticContents)) {
const QRect surfaceGeometry(windowSurface->geometry());
QRect surfaceRect(0, 0, surfaceGeometry.width(), surfaceGeometry.height());
if (!withinClipRect.isEmpty())
surfaceRect &= withinClipRect;
return QRegion(surfaceRect);
}
QRegion region;
if (parent && parent->d_func()->children.isEmpty())
return region;
const bool clipToRect = !withinClipRect.isEmpty();
const int count = staticWidgets.count();
for (int i = 0; i < count; ++i) {
QWidget *w = staticWidgets.at(i);
QWidgetPrivate *wd = w->d_func();
if (!wd->isOpaque || !wd->extra || wd->extra->staticContentsSize.isEmpty()
|| !w->isVisible() || (parent && !parent->isAncestorOf(w))) {
continue;
}
QRect rect(0, 0, wd->extra->staticContentsSize.width(), wd->extra->staticContentsSize.height());
const QPoint offset = w->mapTo(parent ? parent : tlw, QPoint());
if (clipToRect)
rect &= withinClipRect.translated(-offset);
if (rect.isEmpty())
continue;
rect &= wd->clipRect();
if (rect.isEmpty())
continue;
QRegion visible(rect);
wd->clipToEffectiveMask(visible);
if (visible.isEmpty())
continue;
wd->subtractOpaqueSiblings(visible, 0, /*alsoNonOpaque=*/true);
visible.translate(offset);
region += visible;
}
return region;
}
void QWindowContainer::parentWasChanged(QWidget *parent)
{
if (QWindowContainerPrivate *d = QWindowContainerPrivate::get(parent)) {
if (d->window->parent()) {
d->updateUsesNativeWidgets();
d->markParentChain();
QWidget *toplevel = d->usesNativeWidgets ? parent : parent->window();
if (!toplevel->windowHandle()) {
QWidgetPrivate *tld = static_cast<QWidgetPrivate *>(QWidgetPrivate::get(toplevel));
tld->createTLExtra();
tld->createTLSysExtra();
Q_ASSERT(toplevel->windowHandle());
}
d->window->setParent(toplevel->windowHandle());
d->updateGeometry();
}
}
qwindowcontainer_traverse(parent, parentWasChanged);
}
/*!
Synchronizes the backing store, i.e. dirty areas are repainted and flushed.
*/
void QWidgetBackingStore::sync()
{
QTLWExtra *tlwExtra = tlw->d_func()->maybeTopData();
if (discardSyncRequest(tlw, tlwExtra)) {
// If the top-level is minimized, it's not visible on the screen so we can delay the
// update until it's shown again. In order to do that we must keep the dirty states.
// These will be cleared when we receive the first expose after showNormal().
// However, if the widget is not visible (isVisible() returns false), everything will
// be invalidated once the widget is shown again, so clear all dirty states.
if (!tlw->isVisible()) {
dirty = QRegion();
for (int i = 0; i < dirtyWidgets.size(); ++i)
resetWidget(dirtyWidgets.at(i));
dirtyWidgets.clear();
fullUpdatePending = false;
}
return;
}
const bool updatesDisabled = !tlw->updatesEnabled();
bool repaintAllWidgets = false;
const bool inTopLevelResize = tlwExtra->inTopLevelResize;
const QRect tlwRect(tlw->data->crect);
const QRect surfaceGeometry(windowSurface->geometry());
if ((fullUpdatePending || inTopLevelResize || surfaceGeometry.size() != tlwRect.size()) && !updatesDisabled) {
if (hasStaticContents()) {
// Repaint existing dirty area and newly visible area.
const QRect clipRect(0, 0, surfaceGeometry.width(), surfaceGeometry.height());
const QRegion staticRegion(staticContents(0, clipRect));
QRegion newVisible(0, 0, tlwRect.width(), tlwRect.height());
newVisible -= staticRegion;
dirty += newVisible;
windowSurface->setStaticContents(staticRegion);
} else {
// Repaint everything.
dirty = QRegion(0, 0, tlwRect.width(), tlwRect.height());
for (int i = 0; i < dirtyWidgets.size(); ++i)
resetWidget(dirtyWidgets.at(i));
dirtyWidgets.clear();
repaintAllWidgets = true;
}
}
if (inTopLevelResize || surfaceGeometry != tlwRect)
windowSurface->setGeometry(tlwRect);
if (updatesDisabled)
return;
if (hasDirtyFromPreviousSync)
dirty += dirtyFromPreviousSync;
// Contains everything that needs repaint.
QRegion toClean(dirty);
// Loop through all update() widgets and remove them from the list before they are
// painted (in case someone calls update() in paintEvent). If the widget is opaque
// and does not have transparent overlapping siblings, append it to the
// opaqueNonOverlappedWidgets list and paint it directly without composition.
QVarLengthArray<QWidget *, 32> opaqueNonOverlappedWidgets;
for (int i = 0; i < dirtyWidgets.size(); ++i) {
QWidget *w = dirtyWidgets.at(i);
QWidgetPrivate *wd = w->d_func();
if (wd->data.in_destructor)
continue;
// Clip with mask() and clipRect().
wd->dirty &= wd->clipRect();
wd->clipToEffectiveMask(wd->dirty);
// Subtract opaque siblings and children.
bool hasDirtySiblingsAbove = false;
// We know for sure that the widget isn't overlapped if 'isMoved' is true.
if (!wd->isMoved)
wd->subtractOpaqueSiblings(wd->dirty, &hasDirtySiblingsAbove);
// Scrolled and moved widgets must draw all children.
if (!wd->isScrolled && !wd->isMoved)
wd->subtractOpaqueChildren(wd->dirty, w->rect());
if (wd->dirty.isEmpty()) {
resetWidget(w);
continue;
}
const QRegion widgetDirty(w != tlw ? wd->dirty.translated(w->mapTo(tlw, QPoint()))
: wd->dirty);
toClean += widgetDirty;
#ifndef QT_NO_GRAPHICSVIEW
if (tlw->d_func()->extra->proxyWidget) {
resetWidget(w);
continue;
}
#endif
if (!hasDirtySiblingsAbove && wd->isOpaque && !dirty.intersects(widgetDirty.boundingRect())) {
opaqueNonOverlappedWidgets.append(w);
} else {
resetWidget(w);
dirty += widgetDirty;
}
}
dirtyWidgets.clear();
fullUpdatePending = false;
if (toClean.isEmpty()) {
// Nothing to repaint. However, we might have newly exposed areas on the
// screen if this function was called from sync(QWidget *, QRegion)), so
// we have to make sure those are flushed.
flush();
return;
}
#ifndef QT_NO_GRAPHICSVIEW
if (tlw->d_func()->extra->proxyWidget) {
updateStaticContentsSize();
dirty = QRegion();
const QVector<QRect> rects(toClean.rects());
for (int i = 0; i < rects.size(); ++i)
tlw->d_func()->extra->proxyWidget->update(rects.at(i));
return;
}
#endif
#ifndef Q_BACKINGSTORE_SUBSURFACES
BeginPaintInfo beginPaintInfo;
beginPaint(toClean, tlw, windowSurface, &beginPaintInfo);
if (beginPaintInfo.nothingToPaint) {
for (int i = 0; i < opaqueNonOverlappedWidgets.size(); ++i)
resetWidget(opaqueNonOverlappedWidgets[i]);
dirty = QRegion();
return;
}
#endif
// Must do this before sending any paint events because
// the size may change in the paint event.
updateStaticContentsSize();
const QRegion dirtyCopy(dirty);
dirty = QRegion();
// Paint opaque non overlapped widgets.
for (int i = 0; i < opaqueNonOverlappedWidgets.size(); ++i) {
QWidget *w = opaqueNonOverlappedWidgets[i];
QWidgetPrivate *wd = w->d_func();
int flags = QWidgetPrivate::DrawRecursive;
// Scrolled and moved widgets must draw all children.
if (!wd->isScrolled && !wd->isMoved)
flags |= QWidgetPrivate::DontDrawOpaqueChildren;
if (w == tlw)
flags |= QWidgetPrivate::DrawAsRoot;
QRegion toBePainted(wd->dirty);
resetWidget(w);
#ifdef Q_BACKINGSTORE_SUBSURFACES
QWindowSurface *subSurface = w->windowSurface();
BeginPaintInfo beginPaintInfo;
QPoint off = w->mapTo(tlw, QPoint());
toBePainted.translate(off);
beginPaint(toBePainted, w, subSurface, &beginPaintInfo, true);
toBePainted.translate(-off);
if (beginPaintInfo.nothingToPaint)
continue;
if (beginPaintInfo.windowSurfaceRecreated) {
// Eep the window surface has changed. The old one may have been
// deleted, in which case we will segfault on the call to
// painterOffset() below. Use the new window surface instead.
subSurface = w->windowSurface();
}
QPoint offset(tlwOffset);
if (subSurface == windowSurface)
offset += w->mapTo(tlw, QPoint());
else
offset = static_cast<QWSWindowSurface*>(subSurface)->painterOffset();
wd->drawWidget(subSurface->paintDevice(), toBePainted, offset, flags, 0, this);
endPaint(toBePainted, subSurface, &beginPaintInfo);
#else
QPoint offset(tlwOffset);
if (w != tlw)
offset += w->mapTo(tlw, QPoint());
wd->drawWidget(windowSurface->paintDevice(), toBePainted, offset, flags, 0, this);
#endif
}
// Paint the rest with composition.
#ifndef Q_BACKINGSTORE_SUBSURFACES
if (repaintAllWidgets || !dirtyCopy.isEmpty()) {
const int flags = QWidgetPrivate::DrawAsRoot | QWidgetPrivate::DrawRecursive;
tlw->d_func()->drawWidget(windowSurface->paintDevice(), dirtyCopy, tlwOffset, flags, 0, this);
}
endPaint(toClean, windowSurface, &beginPaintInfo);
#else
if (!repaintAllWidgets && dirtyCopy.isEmpty())
return; // Nothing more to paint.
QList<QWindowSurface *> surfaceList(subSurfaces);
surfaceList.prepend(windowSurface);
const QRect dirtyBoundingRect(dirtyCopy.boundingRect());
// Loop through all window surfaces (incl. the top-level surface) and
// repaint those intersecting with the bounding rect of the dirty region.
for (int i = 0; i < surfaceList.size(); ++i) {
QWindowSurface *subSurface = surfaceList.at(i);
QWidget *w = subSurface->window();
QWidgetPrivate *wd = w->d_func();
const QRect clipRect = wd->clipRect().translated(w->mapTo(tlw, QPoint()));
if (!qRectIntersects(dirtyBoundingRect, clipRect))
continue;
toClean = dirtyCopy;
BeginPaintInfo beginPaintInfo;
beginPaint(toClean, w, subSurface, &beginPaintInfo);
if (beginPaintInfo.nothingToPaint)
continue;
if (beginPaintInfo.windowSurfaceRecreated) {
// Eep the window surface has changed. The old one may have been
// deleted, in which case we will segfault on the call to
// painterOffset() below. Use the new window surface instead.
subSurface = w->windowSurface();
}
int flags = QWidgetPrivate::DrawRecursive;
if (w == tlw)
flags |= QWidgetPrivate::DrawAsRoot;
const QPoint painterOffset = static_cast<QWSWindowSurface*>(subSurface)->painterOffset();
wd->drawWidget(subSurface->paintDevice(), toClean, painterOffset, flags, 0, this);
endPaint(toClean, subSurface, &beginPaintInfo);
}
#endif
}
//parent's coordinates; move whole rect; update parent and widget
//assume the screen blt has already been done, so we don't need to refresh that part
void QWidgetPrivate::moveRect(const QRect &rect, int dx, int dy)
{
Q_Q(QWidget);
if (!q->isVisible() || (dx == 0 && dy == 0))
return;
QWidget *tlw = q->window();
QTLWExtra* x = tlw->d_func()->topData();
if (x->inTopLevelResize)
return;
static int accelEnv = -1;
if (accelEnv == -1) {
accelEnv = qgetenv("QT_NO_FAST_MOVE").toInt() == 0;
}
QWidget *pw = q->parentWidget();
QPoint toplevelOffset = pw->mapTo(tlw, QPoint());
QWidgetPrivate *pd = pw->d_func();
QRect clipR(pd->clipRect());
const QRect newRect(rect.translated(dx, dy));
QRect destRect = rect.intersected(clipR);
if (destRect.isValid())
destRect = destRect.translated(dx, dy).intersected(clipR);
const QRect sourceRect(destRect.translated(-dx, -dy));
const QRect parentRect(rect & clipR);
bool accelerateMove = accelEnv && isOpaque
#ifndef QT_NO_GRAPHICSVIEW
// No accelerate move for proxy widgets.
&& !tlw->d_func()->extra->proxyWidget
#endif
&& !isOverlapped(sourceRect) && !isOverlapped(destRect);
if (!accelerateMove) {
QRegion parentR(effectiveRectFor(parentRect));
if (!extra || !extra->hasMask) {
parentR -= newRect;
} else {
// invalidateBuffer() excludes anything outside the mask
parentR += newRect & clipR;
}
pd->invalidateBuffer(parentR);
invalidateBuffer((newRect & clipR).translated(-data.crect.topLeft()));
} else {
QWidgetBackingStore *wbs = x->backingStore.data();
QRegion childExpose(newRect & clipR);
if (sourceRect.isValid() && wbs->bltRect(sourceRect, dx, dy, pw))
childExpose -= destRect;
if (!pw->updatesEnabled())
return;
const bool childUpdatesEnabled = q->updatesEnabled();
if (childUpdatesEnabled && !childExpose.isEmpty()) {
childExpose.translate(-data.crect.topLeft());
wbs->markDirty(childExpose, q);
isMoved = true;
}
QRegion parentExpose(parentRect);
parentExpose -= newRect;
if (extra && extra->hasMask)
parentExpose += QRegion(newRect) - extra->mask.translated(data.crect.topLeft());
if (!parentExpose.isEmpty()) {
wbs->markDirty(parentExpose, pw);
pd->isMoved = true;
}
if (childUpdatesEnabled) {
QRegion needsFlush(sourceRect);
needsFlush += destRect;
wbs->markDirtyOnScreen(needsFlush, pw, toplevelOffset);
}
}
}
