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[aurorae] Only update shadow if it had changed

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This commit is contained in:
Martin Gräßlin 2015-01-27 10:58:10 +01:00
parent 6c53137408
commit 58a70ad1dc
1 changed files with 45 additions and 10 deletions
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55
clients/aurorae/src/aurorae.cpp
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@ -521,22 +521,57 @@ void Decoration::paint(QPainter *painter, const QRect &repaintRegion)
#endif
painter->fillRect(rect(), Qt::transparent);
QRectF r(QPointF(0, 0), m_buffer.size());
bool updateShadow = false;
const auto oldShadow = shadow();
if (m_padding &&
(m_padding->left() > 0 || m_padding->top() > 0 || m_padding->right() > 0 || m_padding->bottom() > 0) &&
!client().data()->isMaximized()) {
r = r.adjusted(m_padding->left(), m_padding->top(), -m_padding->right(), -m_padding->bottom());
auto s = QSharedPointer<KDecoration2::DecorationShadow>::create();
s->setShadow(m_buffer);
s->setPadding(*m_padding);
s->setInnerShadowRect(QRect(m_padding->left(),
m_padding->top(),
m_buffer.width() - m_padding->left() - m_padding->right(),
m_buffer.height() - m_padding->top() - m_padding->bottom()));
m_scheduledShadow = s;
if (oldShadow.isNull()) {
updateShadow = true;
} else {
// compare padding
if (oldShadow->padding() != *m_padding) {
updateShadow = true;
}
}
QImage img(m_buffer.size(), QImage::Format_ARGB32_Premultiplied);
img.fill(Qt::transparent);
QPainter p(&img);
// top
p.drawImage(0, 0, m_buffer, 0, 0, img.width(), m_padding->top());
// left
p.drawImage(0, m_padding->top(), m_buffer, 0, m_padding->top(), m_padding->left(), m_buffer.height() - m_padding->top());
// bottom
p.drawImage(m_padding->left(), m_buffer.height() - m_padding->bottom(), m_buffer,
m_padding->left(), m_buffer.height() - m_padding->bottom(),
m_buffer.width() - m_padding->left(), m_padding->bottom());
// right
p.drawImage(m_buffer.width() - m_padding->right(), m_padding->top(), m_buffer,
m_buffer.width() - m_padding->right(), m_padding->top(),
m_padding->right(), m_buffer.height() - m_padding->top() - m_padding->bottom());
if (!updateShadow) {
updateShadow = (oldShadow->shadow() != img);
}
if (updateShadow) {
auto s = QSharedPointer<KDecoration2::DecorationShadow>::create();
s->setShadow(img);
s->setPadding(*m_padding);
s->setInnerShadowRect(QRect(m_padding->left(),
m_padding->top(),
m_buffer.width() - m_padding->left() - m_padding->right(),
m_buffer.height() - m_padding->top() - m_padding->bottom()));
m_scheduledShadow = s;
}
} else {
m_scheduledShadow = QSharedPointer<KDecoration2::DecorationShadow>();
if (!oldShadow.isNull()) {
m_scheduledShadow = QSharedPointer<KDecoration2::DecorationShadow>();
updateShadow = true;
}
}
if (updateShadow) {
QMetaObject::invokeMethod(this, "updateShadow", Qt::QueuedConnection);
}
QMetaObject::invokeMethod(this, "updateShadow", Qt::QueuedConnection);
painter->drawImage(rect(), m_buffer, r);
}