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kgreeter: pre-scale and cache the scaled background image

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-04-28 11:32:53 +03:00
parent 27367c93c6
commit d1f32b2a66
1 changed files with 8 additions and 3 deletions
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11
kgreeter/kgreeter.cpp
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@ -88,6 +88,7 @@ private:
QList<QAction*> m_sessionactions;
QList<QAction*> m_layoutactions;
QImage m_background;
QImage m_backgroundscaled;
QImage m_rectangle;
QImage m_rectanglescaled;
int m_timerid;
@ -237,14 +238,18 @@ KGreeter::~KGreeter()
void KGreeter::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
if (!m_background.isNull()) {
QPainter painter(this);
painter.drawImage(rect(), m_background);
const QSize windowsize = size();
if (m_backgroundscaled.isNull() || windowsize != m_backgroundscaled.size()) {
m_backgroundscaled = m_background.scaled(windowsize);
}
painter.drawImage(QPoint(0, 0), m_backgroundscaled);
}
if (!m_rectangle.isNull()) {
m_ui.groupframe->setFrameShape(QFrame::NoFrame);
QPainter painter(this);
QSize kgreeterrectanglesize(m_ui.groupframe->size());
kgreeterrectanglesize.rwidth() = kgreeterrectanglesize.width() * 1.06;
kgreeterrectanglesize.rheight() = kgreeterrectanglesize.height() * 1.65;