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Windows11Style: Use pixmap cache for drawing CC_ScrollBar

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Use a pixmap cache for CC_ScrollBar to avoid redundant paintings.

Change-Id: I677d6162a58e5fff9e53ad515e99436ea1546b0c
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
This commit is contained in:
Christian Ehrlicher 2024-09-21 19:59:30 +02:00
parent cd6608e887
commit 57f461e21a
1 changed files with 60 additions and 53 deletions
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113
src/plugins/styles/modernwindows/qwindows11style.cpp
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@ -471,62 +471,69 @@ void QWindows11Style::drawComplexControl(ComplexControl control, const QStyleOpt
#endif // QT_CONFIG(combobox)
case CC_ScrollBar:
if (const QStyleOptionSlider *scrollbar = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
const bool vertical = scrollbar->orientation == Qt::Vertical;
const bool horizontal = scrollbar->orientation == Qt::Horizontal;
const bool isMouseOver = state & State_MouseOver;
QCachedPainter cp(painter, QLatin1StringView("win11_scrollbar")
% HexString<uint8_t>(colorSchemeIndex)
% HexString<int>(scrollbar->minimum)
% HexString<int>(scrollbar->maximum)
% HexString<int>(scrollbar->sliderPosition),
scrollbar, scrollbar->rect.size());
if (cp.needsPainting()) {
const bool vertical = scrollbar->orientation == Qt::Vertical;
const bool horizontal = scrollbar->orientation == Qt::Horizontal;
const bool isMouseOver = state & State_MouseOver;
if (isMouseOver) {
QRectF rect = scrollbar->rect;
const QPointF center = rect.center();
if (vertical && rect.width() > 24) {
rect.marginsRemoved(QMargins(0, 2, 2, 2));
rect.setWidth(rect.width() / 2);
} else if (horizontal && rect.height() > 24) {
rect.marginsRemoved(QMargins(2, 0, 2, 2));
rect.setHeight(rect.height() / 2);
}
rect.moveCenter(center);
painter->setBrush(scrollbar->palette.base());
painter->setPen(Qt::NoPen);
painter->drawRoundedRect(rect, topLevelRoundingRadius, topLevelRoundingRadius);
rect = rect.marginsRemoved(QMarginsF(0.5, 0.5, 0.5, 0.5));
painter->setBrush(Qt::NoBrush);
painter->setPen(WINUI3Colors[colorSchemeIndex][frameColorLight]);
painter->drawRoundedRect(rect, topLevelRoundingRadius + 0.5, topLevelRoundingRadius + 0.5);
}
if (sub & SC_ScrollBarSlider) {
QRectF rect = proxy()->subControlRect(CC_ScrollBar, option, SC_ScrollBarSlider, widget);
const QPointF center = rect.center();
if (vertical)
rect.setWidth(isMouseOver ? rect.width() / 2 : 1);
else
rect.setHeight(isMouseOver ? rect.height() / 2 : 1);
rect.moveCenter(center);
painter->setBrush(Qt::gray);
painter->setPen(Qt::NoPen);
painter->drawRoundedRect(rect, secondLevelRoundingRadius, secondLevelRoundingRadius);
}
if (sub & SC_ScrollBarAddLine) {
if (isMouseOver) {
const QRectF rect = proxy()->subControlRect(CC_ScrollBar, option, SC_ScrollBarAddLine, widget);
QFont f(assetFont);
f.setPointSize(6);
painter->setFont(f);
painter->setPen(Qt::gray);
const auto str = vertical ? QStringLiteral("\uEDDC") : QStringLiteral("\uEDDA");
painter->drawText(rect, str, Qt::AlignVCenter | Qt::AlignHCenter);
QRectF rect = scrollbar->rect;
const QPointF center = rect.center();
if (vertical && rect.width() > 24) {
rect.marginsRemoved(QMargins(0, 2, 2, 2));
rect.setWidth(rect.width() / 2);
} else if (horizontal && rect.height() > 24) {
rect.marginsRemoved(QMargins(2, 0, 2, 2));
rect.setHeight(rect.height() / 2);
}
rect.moveCenter(center);
cp->setBrush(scrollbar->palette.base());
cp->setPen(Qt::NoPen);
cp->drawRoundedRect(rect, topLevelRoundingRadius, topLevelRoundingRadius);
rect = rect.marginsRemoved(QMarginsF(0.5, 0.5, 0.5, 0.5));
cp->setBrush(Qt::NoBrush);
cp->setPen(WINUI3Colors[colorSchemeIndex][frameColorLight]);
cp->drawRoundedRect(rect, topLevelRoundingRadius + 0.5, topLevelRoundingRadius + 0.5);
}
}
if (sub & SC_ScrollBarSubLine) {
if (isMouseOver) {
const QRectF rect = proxy()->subControlRect(CC_ScrollBar, option, SC_ScrollBarSubLine, widget);
QFont f(assetFont);
f.setPointSize(6);
painter->setFont(f);
painter->setPen(Qt::gray);
const auto str = vertical ? QStringLiteral("\uEDDB") : QStringLiteral("\uEDD9");
painter->drawText(rect, str, Qt::AlignVCenter | Qt::AlignHCenter);
if (sub & SC_ScrollBarSlider) {
QRectF rect = proxy()->subControlRect(CC_ScrollBar, option, SC_ScrollBarSlider, widget);
const QPointF center = rect.center();
if (vertical)
rect.setWidth(isMouseOver ? rect.width() / 2 : 1);
else
rect.setHeight(isMouseOver ? rect.height() / 2 : 1);
rect.moveCenter(center);
cp->setBrush(Qt::gray);
cp->setPen(Qt::NoPen);
cp->drawRoundedRect(rect, secondLevelRoundingRadius, secondLevelRoundingRadius);
}
if (sub & SC_ScrollBarAddLine) {
if (isMouseOver) {
const QRectF rect = proxy()->subControlRect(CC_ScrollBar, option, SC_ScrollBarAddLine, widget);
QFont f = QFont(assetFont);
f.setPointSize(6);
cp->setFont(f);
cp->setPen(Qt::gray);
const auto str = vertical ? QStringLiteral("\uEDDC") : QStringLiteral("\uEDDA");
cp->drawText(rect, str, Qt::AlignVCenter | Qt::AlignHCenter);
}
}
if (sub & SC_ScrollBarSubLine) {
if (isMouseOver) {
const QRectF rect = proxy()->subControlRect(CC_ScrollBar, option, SC_ScrollBarSubLine, widget);
QFont f = QFont(assetFont);
f.setPointSize(6);
cp->setFont(f);
cp->setPen(Qt::gray);
const auto str = vertical ? QStringLiteral("\uEDDB") : QStringLiteral("\uEDD9");
cp->drawText(rect, str, Qt::AlignVCenter | Qt::AlignHCenter);
}
}
}
}