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QWidget: replace manual memory management with unique_ptr [6/N]: extra

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Had to port a lot of caching temporaries, too. Decided to leave them as
crefs to unique_ptr to catch any mischief users may be doing with the
raw pointer instead (like deleting it).

Also fixed a use of 0 as nullptr (by standardizing on pointer-to-bool
conversion, as is done everywhere else in qwidget.cpp), and made one
impregnable if condition readable.

Change-Id: Ifdc240bf352c52de0bc3c186fa7a5f4cb2882dd0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
This commit is contained in:
Marc Mutz 2019-05-24 22:06:09 +02:00
parent 9e86fdb6e8
commit f556505f63
5 changed files with 25 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/widgets/graphicsview/qgraphicsproxywidget.cpp
View File

@ -404,7 +404,7 @@ void QGraphicsProxyWidgetPrivate::_q_removeWidgetSlot()
{
Q_Q(QGraphicsProxyWidget);
if (!widget.isNull()) {
if (QWExtra *extra = widget->d_func()->extra)
if (const auto &extra = widget->d_func()->extra)
extra->proxyWidget = 0;
}
widget = 0;
@ -477,8 +477,8 @@ void QGraphicsProxyWidgetPrivate::updateProxyInputMethodAcceptanceFromWidget()
*/
void QGraphicsProxyWidgetPrivate::embedSubWindow(QWidget *subWin)
{
QWExtra *extra;
if (!((extra = subWin->d_func()->extra) && extra->proxyWidget)) {
const auto &extra = subWin->d_func()->extra;
if (!extra || !extra->proxyWidget) {
QGraphicsProxyWidget *subProxy = new QGraphicsProxyWidget(q_func(), subWin->windowFlags());
subProxy->d_func()->setWidget_helper(subWin, false);
}
@ -631,7 +631,7 @@ void QGraphicsProxyWidgetPrivate::setWidget_helper(QWidget *newWidget, bool auto
if (!newWidget)
return;
if (!newWidget->isWindow()) {
QWExtra *extra = newWidget->parentWidget()->d_func()->extra;
const auto &extra = newWidget->parentWidget()->d_func()->extra;
if (!extra || !extra->proxyWidget) {
qWarning("QGraphicsProxyWidget::setWidget: cannot embed widget %p "
"which is not a toplevel widget, and is not a child of an embedded widget", newWidget);
@ -641,10 +641,10 @@ void QGraphicsProxyWidgetPrivate::setWidget_helper(QWidget *newWidget, bool auto
// Register this proxy within the widget's private.
// ### This is a bit backdoorish
QWExtra *extra = newWidget->d_func()->extra;
QWExtra *extra = newWidget->d_func()->extra.get();
if (!extra) {
newWidget->d_func()->createExtra();
extra = newWidget->d_func()->extra;
extra = newWidget->d_func()->extra.get();
}
QGraphicsProxyWidget **proxyWidget = &extra->proxyWidget;
if (*proxyWidget) {

4
src/widgets/kernel/qapplication.cpp
View File

@ -3388,7 +3388,7 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
#if QT_CONFIG(graphicsview)
// QGraphicsProxyWidget handles its own propagation,
// and we must not change QDragManagers currentTarget.
QWExtra *extra = w->window()->d_func()->extra;
const auto &extra = w->window()->d_func()->extra;
if (extra && extra->proxyWidget) {
res = d->notify_helper(w, dragEvent);
break;
@ -3416,7 +3416,7 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
#if QT_CONFIG(graphicsview)
// QGraphicsProxyWidget handles its own propagation,
// and we must not change QDragManagers currentTarget.
QWExtra *extra = w->window()->d_func()->extra;
const auto &extra = w->window()->d_func()->extra;
bool isProxyWidget = extra && extra->proxyWidget;
if (!isProxyWidget)
#endif

2
src/widgets/kernel/qshortcut.cpp
View File

@ -178,7 +178,7 @@ static bool correctWidgetContext(Qt::ShortcutContext context, QWidget *w, QWidge
// Below is Qt::WindowShortcut context
QWidget *tlw = w->window();
#if QT_CONFIG(graphicsview)
if (auto topData = static_cast<QWidgetPrivate *>(QObjectPrivate::get(tlw))->extra) {
if (auto topData = static_cast<QWidgetPrivate *>(QObjectPrivate::get(tlw))->extra.get()) {
if (topData->proxyWidget) {
bool res = correctGraphicsWidgetContext(context, topData->proxyWidget, active_window);
return res;

30
src/widgets/kernel/qwidget.cpp
View File

@ -148,7 +148,6 @@ extern QDesktopWidget *qt_desktopWidget; // qapplication.cpp
QWidgetPrivate::QWidgetPrivate(int version)
: QObjectPrivate(version)
, extra(0)
, focus_next(0)
, focus_prev(0)
, focus_child(0)
@ -1553,7 +1552,7 @@ QWidget::~QWidget()
while (w->d_func()->extra && w->d_func()->extra->focus_proxy)
w = w->d_func()->extra->focus_proxy;
QWidget *window = w->window();
QWExtra *e = window ? window->d_func()->extra : 0;
QWExtra *e = window ? window->d_func()->extra.get() : nullptr ;
if (!e || !e->proxyWidget || (w->parentWidget() && w->parentWidget()->d_func()->focus_child == this))
#endif
clearFocus();
@ -1732,7 +1731,7 @@ void QWidgetPrivate::createTLExtra()
void QWidgetPrivate::createExtra()
{
if (!extra) { // if not exists
extra = new QWExtra;
extra = qt_make_unique<QWExtra>();
extra->glContext = 0;
#if QT_CONFIG(graphicsview)
extra->proxyWidget = 0;
@ -1780,9 +1779,8 @@ void QWidgetPrivate::deleteExtra()
deleteTLSysExtra();
// extra->topextra->backingStore destroyed in QWidgetPrivate::deleteTLSysExtra()
}
delete extra;
// extra->xic destroyed in QWidget::destroy()
extra = 0;
extra.reset();
}
}
@ -1853,7 +1851,7 @@ QRegion QWidgetPrivate::overlappedRegion(const QRect &rect, bool breakAfterFirst
const QRect siblingRect = sibling->d_func()->effectiveRectFor(sibling->data->crect);
if (qRectIntersects(siblingRect, r)) {
const QWExtra *siblingExtra = sibling->d_func()->extra;
const auto &siblingExtra = sibling->d_func()->extra;
if (siblingExtra && siblingExtra->hasMask && !sibling->d_func()->graphicsEffect
&& !siblingExtra->mask.translated(sibling->data->crect.topLeft()).intersects(r)) {
continue;
@ -3858,7 +3856,7 @@ QSize QWidget::sizeIncrement() const
QSize QWidget::baseSize() const
{
Q_D(const QWidget);
return (d->extra != 0 && d->extra->topextra != 0)
return (d->extra && d->extra->topextra)
? QSize(d->extra->topextra->basew, d->extra->topextra->baseh)
: QSize(0, 0);
}
@ -5858,7 +5856,7 @@ QPixmap QWidgetEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QPoint *
QGraphicsProxyWidget *QWidgetPrivate::nearestGraphicsProxyWidget(const QWidget *origin)
{
if (origin) {
QWExtra *extra = origin->d_func()->extra;
const auto &extra = origin->d_func()->extra;
if (extra && extra->proxyWidget)
return extra->proxyWidget;
return nearestGraphicsProxyWidget(origin->parentWidget());
@ -6404,7 +6402,7 @@ bool QWidget::hasFocus() const
w = w->d_func()->extra->focus_proxy;
#if QT_CONFIG(graphicsview)
if (QWidget *window = w->window()) {
QWExtra *e = window->d_func()->extra;
const auto &e = window->d_func()->extra;
if (e && e->proxyWidget && e->proxyWidget->hasFocus() && window->focusWidget() == w)
return true;
}
@ -6465,7 +6463,7 @@ void QWidget::setFocus(Qt::FocusReason reason)
#if QT_CONFIG(graphicsview)
QWidget *previousProxyFocus = 0;
if (QWExtra *topData = window()->d_func()->extra) {
if (const auto &topData = window()->d_func()->extra) {
if (topData->proxyWidget && topData->proxyWidget->hasFocus()) {
previousProxyFocus = topData->proxyWidget->widget()->focusWidget();
if (previousProxyFocus && previousProxyFocus->focusProxy())
@ -6478,7 +6476,7 @@ void QWidget::setFocus(Qt::FocusReason reason)
#if QT_CONFIG(graphicsview)
// Update proxy state
if (QWExtra *topData = window()->d_func()->extra) {
if (const auto &topData = window()->d_func()->extra) {
if (topData->proxyWidget && !topData->proxyWidget->hasFocus()) {
f->d_func()->updateFocusChild();
topData->proxyWidget->d_func()->focusFromWidgetToProxy = 1;
@ -6519,7 +6517,7 @@ void QWidget::setFocus(Qt::FocusReason reason)
}
#endif
#if QT_CONFIG(graphicsview)
if (QWExtra *topData = window()->d_func()->extra) {
if (const auto &topData = window()->d_func()->extra) {
if (topData->proxyWidget) {
if (previousProxyFocus && previousProxyFocus != f) {
// Send event to self
@ -6532,7 +6530,7 @@ void QWidget::setFocus(Qt::FocusReason reason)
if (!isHidden()) {
#if QT_CONFIG(graphicsview)
// Update proxy state
if (QWExtra *topData = window()->d_func()->extra)
if (const auto &topData = window()->d_func()->extra)
if (topData->proxyWidget && topData->proxyWidget->hasFocus())
topData->proxyWidget->d_func()->updateProxyInputMethodAcceptanceFromWidget();
#endif
@ -6669,7 +6667,7 @@ void QWidget::clearFocus()
}
#if QT_CONFIG(graphicsview)
QWExtra *topData = d_func()->extra;
const auto &topData = d_func()->extra;
if (topData && topData->proxyWidget)
topData->proxyWidget->clearFocus();
#endif
@ -6835,7 +6833,7 @@ bool QWidget::isActiveWindow() const
return true;
#if QT_CONFIG(graphicsview)
if (QWExtra *tlwExtra = tlw->d_func()->extra) {
if (const auto &tlwExtra = tlw->d_func()->extra) {
if (isVisible() && tlwExtra->proxyWidget)
return tlwExtra->proxyWidget->isActiveWindow();
}
@ -10325,7 +10323,7 @@ void QWidget::setSizePolicy(QSizePolicy policy)
d->size_policy = policy;
#if QT_CONFIG(graphicsview)
if (QWExtra *extra = d->extra) {
if (const auto &extra = d->extra) {
if (extra->proxyWidget)
extra->proxyWidget->setSizePolicy(policy);
}

4
src/widgets/kernel/qwidget_p.h
View File

@ -669,7 +669,7 @@ public:
// Variables.
// Regular pointers (keep them together to avoid gaps on 64 bit architectures).
QWExtra *extra;
std::unique_ptr<QWExtra> extra;
QWidget *focus_next;
QWidget *focus_prev;
QWidget *focus_child;
@ -945,7 +945,7 @@ public:
inline QWExtra *QWidgetPrivate::extraData() const
{
return extra;
return extra.get();
}
inline QTLWExtra *QWidgetPrivate::topData() const