QCommonStyle: make sure QPainter::save/restore() is called balanced
tst_qstylesheetstyle revealed an unbalanced call to save/restore within drawPrimitive(PE_IndicatorSpinUp/Down) due to an early exit. Therefore add a RAII-helper class to make sure QPainter::restore() is always called after a QPainter::save(). Change-Id: I1b3851836b36d75357ed8c4532f7d2e44136159e Reviewed-by: Axel Spoerl <axel.spoerl@qt.io> (cherry picked from commit 531aeeefb545189a0eb2918a04e5b961ea52ed7d) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Christian Ehrlicher
Qt Cherry-pick Bot
parent
8dcb5814e0
commit
0773a3b0e6
@ -96,6 +96,31 @@ static qreal qt_getDevicePixelRatio(const QWidget *widget)
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return widget ? widget->devicePixelRatio() : qApp->devicePixelRatio();
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}
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struct QPainterStateSaver
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{
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QPainterStateSaver(QPainter *p, bool bSaveRestore = true)
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: m_painter(p)
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, m_bSaveRestore(bSaveRestore)
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{
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if (m_bSaveRestore)
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m_painter->save();
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}
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~QPainterStateSaver()
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{
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restore();
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}
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void restore()
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{
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if (m_bSaveRestore) {
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m_bSaveRestore = false;
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m_painter->restore();
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}
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}
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private:
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QPainter *m_painter;
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bool m_bSaveRestore;
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};
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/*!
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\class QCommonStyle
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\brief The QCommonStyle class encapsulates the common Look and Feel of a GUI.
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@ -228,11 +253,10 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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--yy;
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}
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if (!(opt->state & State_Enabled) && !(opt->state & State_On)) {
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p->save();
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QPainterStateSaver pss(p);
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p->translate(1, 1);
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p->setPen(opt->palette.light().color());
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p->drawLines(a);
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p->restore();
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}
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p->setPen((opt->state & State_On) ? opt->palette.highlightedText().color() : opt->palette.text().color());
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p->drawLines(a);
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@ -354,7 +378,7 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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case PE_FrameTabBarBase:
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if (const QStyleOptionTabBarBase *tbb
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= qstyleoption_cast<const QStyleOptionTabBarBase *>(opt)) {
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p->save();
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QPainterStateSaver pss(p);
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switch (tbb->shape) {
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case QTabBar::RoundedNorth:
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case QTabBar::TriangularNorth:
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@ -381,7 +405,6 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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p->drawLine(tbb->rect.topRight(), tbb->rect.bottomRight());
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break;
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}
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p->restore();
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}
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break;
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case PE_IndicatorTabClose: {
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@ -441,8 +464,8 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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break;
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#endif // QT_CONFIG(dockwidget)
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#if QT_CONFIG(toolbar)
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case PE_IndicatorToolBarHandle:
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p->save();
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case PE_IndicatorToolBarHandle: {
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QPainterStateSaver pss(p);
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p->translate(opt->rect.x(), opt->rect.y());
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if (opt->state & State_Horizontal) {
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int x = opt->rect.width() / 3;
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@ -463,8 +486,8 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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opt->palette, false, 1, nullptr);
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}
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}
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p->restore();
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break;
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}
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case PE_IndicatorToolBarSeparator:
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{
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QPoint p1, p2;
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@ -489,7 +512,7 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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int y = br.y();
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int w = br.width();
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int h = br.height();
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p->save();
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QPainterStateSaver pss(p);
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const qreal devicePixelRatio = p->device()->devicePixelRatio();
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if (!qFuzzyCompare(devicePixelRatio, qreal(1))) {
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const qreal inverseScale = qreal(1) / devicePixelRatio;
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@ -516,7 +539,6 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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p->fillRect(-len / 2, -step2, len, step, opt->palette.buttonText());
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if (pe == PE_IndicatorSpinPlus)
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p->fillRect(-step2, -len / 2, step, len, opt->palette.buttonText());
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p->restore();
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break; }
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case PE_IndicatorSpinUp:
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case PE_IndicatorSpinDown: {
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@ -527,7 +549,7 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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int y = r.y();
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int w = r.width();
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int h = r.height();
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p->save();
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QPainterStateSaver pss(p);
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const qreal devicePixelRatio = p->device()->devicePixelRatio();
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if (!qFuzzyCompare(devicePixelRatio, qreal(1))) {
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const qreal inverseScale = qreal(1) / devicePixelRatio;
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@ -568,7 +590,6 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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const QPoint points[] = { QPoint(0, sh-1), QPoint(sw-1, sh-1), QPoint(sh-2, 1) };
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p->drawPolygon(points, sizeof points / sizeof *points);
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}
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p->restore();
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break; }
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#endif // QT_CONFIG(spinbox)
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case PE_PanelTipLabel: {
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@ -626,7 +647,7 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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case PE_IndicatorColumnViewArrow: {
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if (const QStyleOptionViewItem *viewOpt = qstyleoption_cast<const QStyleOptionViewItem *>(opt)) {
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bool reverse = (viewOpt->direction == Qt::RightToLeft);
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p->save();
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QPainterStateSaver pss(p);
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QPainterPath path;
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int x = viewOpt->rect.x() + 1;
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int offset = (viewOpt->rect.height() / 3);
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@ -671,7 +692,6 @@ void QCommonStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, Q
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p->setPen(color);
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p->drawPath(lines);
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}
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p->restore();
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}
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break; }
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#endif //QT_CONFIG(columnview)
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@ -1818,8 +1838,7 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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break;
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case CE_TabBarTabShape:
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if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(opt)) {
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p->save();
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QPainterStateSaver pss(p);
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QRect rect(tab->rect);
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bool selected = tab->state & State_Selected;
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bool onlyOne = tab->position == QStyleOptionTab::OnlyOneTab;
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@ -1920,7 +1939,6 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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default:
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break;
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}
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p->restore();
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}
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break;
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case CE_ToolBoxTabLabel:
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@ -1981,8 +1999,8 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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if (!proxy()->styleHint(SH_UnderlineShortcut, opt, widget))
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alignment |= Qt::TextHideMnemonic;
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QPainterStateSaver pss(p, verticalTabs);
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if (verticalTabs) {
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p->save();
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int newX, newY, newRot;
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if (tab->shape == QTabBar::RoundedEast || tab->shape == QTabBar::TriangularEast) {
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newX = tr.width() + tr.x();
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@ -2015,8 +2033,7 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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proxy()->drawItemText(p, tr, alignment, tab->palette, tab->state & State_Enabled, tab->text,
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widget ? widget->foregroundRole() : QPalette::WindowText);
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if (verticalTabs)
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p->restore();
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pss.restore();
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if (tab->state & State_HasFocus) {
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const int OFFSET = 1 + pixelMetric(PM_DefaultFrameWidth);
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@ -2036,7 +2053,7 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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#endif // QT_CONFIG(tabbar)
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#if QT_CONFIG(sizegrip)
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case CE_SizeGrip: {
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p->save();
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QPainterStateSaver pss(p);
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int x, y, w, h;
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opt->rect.getRect(&x, &y, &w, &h);
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@ -2105,7 +2122,6 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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sy += s;
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}
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}
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p->restore();
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break; }
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#endif // QT_CONFIG(sizegrip)
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#if QT_CONFIG(rubberband)
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@ -2122,7 +2138,7 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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// ### workaround for borked XRENDER
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tiledPixmap = QPixmap::fromImage(tiledPixmap.toImage());
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p->save();
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QPainterStateSaver pss(p);
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QRect r = opt->rect;
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QStyleHintReturnMask mask;
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if (proxy()->styleHint(QStyle::SH_RubberBand_Mask, opt, widget, &mask))
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@ -2133,7 +2149,6 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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p->drawRect(r.adjusted(0, 0, -1, -1));
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if (rbOpt->shape == QRubberBand::Rectangle)
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p->drawRect(r.adjusted(3, 3, -4, -4));
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p->restore();
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}
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break; }
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#endif // QT_CONFIG(rubberband)
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@ -2149,10 +2164,10 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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if (!dwOpt->title.isEmpty()) {
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const bool verticalTitleBar = dwOpt->verticalTitleBar;
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QPainterStateSaver pss(p, verticalTitleBar);
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if (verticalTitleBar) {
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r = r.transposed();
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p->save();
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p->translate(r.left(), r.top() + r.width());
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p->rotate(-90);
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p->translate(-r.left(), -r.top());
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@ -2163,9 +2178,6 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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Qt::AlignLeft | Qt::AlignVCenter, dwOpt->palette,
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dwOpt->state & State_Enabled, dwOpt->title,
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QPalette::WindowText);
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if (verticalTitleBar)
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p->restore();
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}
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}
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break;
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@ -2207,7 +2219,7 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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case CE_ComboBoxLabel:
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if (const QStyleOptionComboBox *cb = qstyleoption_cast<const QStyleOptionComboBox *>(opt)) {
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QRect editRect = proxy()->subControlRect(CC_ComboBox, cb, SC_ComboBoxEditField, widget);
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p->save();
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QPainterStateSaver pss(p);
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p->setClipRect(editRect);
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if (!cb->currentIcon.isNull()) {
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QIcon::Mode mode = cb->state & State_Enabled ? QIcon::Normal
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@ -2232,7 +2244,6 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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visualAlignment(cb->direction, cb->textAlignment),
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cb->palette, cb->state & State_Enabled, cb->currentText);
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}
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p->restore();
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}
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break;
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#endif // QT_CONFIG(combobox)
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@ -2278,7 +2289,7 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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#if QT_CONFIG(itemviews)
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case CE_ItemViewItem:
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if (const QStyleOptionViewItem *vopt = qstyleoption_cast<const QStyleOptionViewItem *>(opt)) {
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p->save();
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QPainterStateSaver pss(p);
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// the style calling this might want to clip, so respect any region already set
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const QRegion clipRegion = p->hasClipping() ? (p->clipRegion() & opt->rect) : opt->rect;
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p->setClipRegion(clipRegion);
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@ -2352,8 +2363,6 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
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? QPalette::Highlight : QPalette::Window);
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proxy()->drawPrimitive(QStyle::PE_FrameFocusRect, &o, p, widget);
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}
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p->restore();
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}
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break;
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@ -3275,7 +3284,7 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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int fudge = len / 2;
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int pos;
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// Since there is no subrect for tickmarks do a translation here.
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p->save();
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QPainterStateSaver pss(p);
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p->translate(slider->rect.x(), slider->rect.y());
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p->setPen(slider->palette.windowText().color());
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int v = slider->minimum;
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@ -3304,7 +3313,6 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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break;
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v = nextInterval;
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}
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p->restore();
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}
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}
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break;
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@ -3570,12 +3578,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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if (tb->subControls & SC_TitleBarMaxButton
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@ -3589,12 +3596,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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if (tb->subControls & SC_TitleBarMinButton
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@ -3607,12 +3613,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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bool drawNormalButton = (tb->subControls & SC_TitleBarNormalButton)
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@ -3629,12 +3634,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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if (tb->subControls & SC_TitleBarShadeButton
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@ -3646,12 +3650,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.rect = ir;
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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if (tb->subControls & SC_TitleBarUnshadeButton
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@ -3664,12 +3667,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.rect = ir;
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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if (tb->subControls & SC_TitleBarContextHelpButton
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&& tb->titleBarFlags & Qt::WindowContextHelpButtonHint) {
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@ -3680,12 +3682,11 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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tool.rect = ir;
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tool.state = down ? State_Sunken : State_Raised;
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proxy()->drawPrimitive(PE_PanelButtonTool, &tool, p, widget);
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p->save();
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QPainterStateSaver pss(p, down);
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if (down)
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p->translate(proxy()->pixelMetric(PM_ButtonShiftHorizontal, tb, widget),
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proxy()->pixelMetric(PM_ButtonShiftVertical, tb, widget));
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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if (tb->subControls & SC_TitleBarSysMenu && tb->titleBarFlags & Qt::WindowSystemMenuHint) {
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ir = proxy()->subControlRect(CC_TitleBar, tb, SC_TitleBarSysMenu, widget);
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@ -3695,9 +3696,8 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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int iconSize = proxy()->pixelMetric(PM_SmallIconSize, tb, widget);
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pm = proxy()->standardIcon(SP_TitleBarMenuButton, &tool, widget).pixmap(QSize(iconSize, iconSize), p->device()->devicePixelRatio());
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tool.rect = ir;
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p->save();
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QPainterStateSaver pss(p);
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proxy()->drawItemPixmap(p, ir, Qt::AlignCenter, pm);
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p->restore();
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}
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}
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}
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@ -3706,7 +3706,7 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
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case CC_Dial:
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if (const QStyleOptionSlider *dial = qstyleoption_cast<const QStyleOptionSlider *>(opt)) {
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// OK, this is more a port of things over
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p->save();
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QPainterStateSaver pss(p);
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// avoid dithering
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if (p->paintEngine()->hasFeature(QPaintEngine::Antialiasing))
|
||||
@ -3791,7 +3791,6 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
|
||||
fropt.rect = br.adjusted(-2, -2, 2, 2);
|
||||
proxy()->drawPrimitive(QStyle::PE_FrameFocusRect, &fropt, p, widget);
|
||||
}
|
||||
p->restore();
|
||||
}
|
||||
break;
|
||||
#endif // QT_CONFIG(dial)
|
||||
@ -3808,7 +3807,7 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
|
||||
frame.lineWidth = groupBox->lineWidth;
|
||||
frame.midLineWidth = groupBox->midLineWidth;
|
||||
frame.rect = proxy()->subControlRect(CC_GroupBox, opt, SC_GroupBoxFrame, widget);
|
||||
p->save();
|
||||
QPainterStateSaver pss(p);
|
||||
QRegion region(groupBox->rect);
|
||||
if (!groupBox->text.isEmpty()) {
|
||||
bool ltr = groupBox->direction == Qt::LeftToRight;
|
||||
@ -3823,7 +3822,6 @@ void QCommonStyle::drawComplexControl(ComplexControl cc, const QStyleOptionCompl
|
||||
}
|
||||
p->setClipRegion(region);
|
||||
proxy()->drawPrimitive(PE_FrameGroupBox, &frame, p, widget);
|
||||
p->restore();
|
||||
}
|
||||
|
||||
// Draw title
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user