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plasma: check if visible widgets are under the mouse every 1 second

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slightly better than Plasma::ToolButton when it comes to the widget being
in a scroll area/widget of some sort

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2024-05-23 17:13:23 +03:00
parent 0896ce8d91
commit 630ed969da
1 changed files with 26 additions and 7 deletions
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33
plasma/applets/launcher/launcher.cpp
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@ -188,6 +188,7 @@ Q_SIGNALS:
private Q_SLOTS:
void slotClicked(const Qt::MouseButton button);
void slotUpdateFonts();
void slotTimeout();
protected:
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) final;
@ -201,7 +202,7 @@ private:
QPropertyAnimation* animateHover(QPropertyAnimation *animation, const bool fadeout);
Plasma::Animation* animateButton(Plasma::Animation *animation, Plasma::ToolButton *toolbutton,
const bool fadeout);
bool handleMouseEvent(QGraphicsSceneMouseEvent *event) const;
bool handleMouseEvent(QGraphicsSceneMouseEvent *event);
QGraphicsLinearLayout* m_layout;
Plasma::FrameSvg* m_framesvg;
@ -223,6 +224,7 @@ private:
QString m_data;
int m_actioncounter;
QPointer<QMimeData> m_mimedata;
QTimer* m_undermousetimer;
};
LauncherWidget::LauncherWidget(QGraphicsWidget *parent)
@ -245,7 +247,8 @@ LauncherWidget::LauncherWidget(QGraphicsWidget *parent)
m_action3animation(nullptr),
m_action4animation(nullptr),
m_actioncounter(0),
m_mimedata(nullptr)
m_mimedata(nullptr),
m_undermousetimer(nullptr)
{
m_layout = new QGraphicsLinearLayout(Qt::Horizontal, this);
setLayout(m_layout);
@ -301,6 +304,15 @@ LauncherWidget::LauncherWidget(QGraphicsWidget *parent)
KGlobalSettings::self(), SIGNAL(kdisplayFontChanged()),
this, SLOT(slotUpdateFonts())
);
m_undermousetimer = new QTimer(this);
// this could be done on scroll event (Plasma::ScrollWidget::scrollStateChanged()) but that
// means locking for thread-safety
m_undermousetimer->setInterval(s_animationduration * 4);
connect(
m_undermousetimer, SIGNAL(timeout()),
this, SLOT(slotTimeout())
);
}
LauncherWidget::~LauncherWidget()
@ -448,9 +460,8 @@ void LauncherWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *op
if (m_hover > 0.0) {
painter->setRenderHint(QPainter::Antialiasing);
const QRectF brect = boundingRect();
const QSizeF brectsize = brect.size();
const qreal oldopacity = painter->opacity();
m_framesvg->resizeFrame(brectsize);
m_framesvg->resizeFrame(brect.size());
painter->setOpacity(m_hover);
m_framesvg->paintFrame(painter, brect);
painter->setOpacity(oldopacity);
@ -500,9 +511,12 @@ QVariant LauncherWidget::itemChange(QGraphicsItem::GraphicsItemChange change, co
{
const QVariant result = Plasma::SvgWidget::itemChange(change, value);
switch (change) {
case QGraphicsItem::ItemPositionHasChanged:
case QGraphicsItem::ItemVisibleHasChanged: {
m_hoveranimation = animateHover(m_hoveranimation, !isUnderMouse());
if (value.toBool()) {
m_undermousetimer->start();
} else {
m_undermousetimer->stop();
}
break;
}
default: {
@ -546,7 +560,7 @@ QPropertyAnimation* LauncherWidget::animateHover(QPropertyAnimation *animation,
return animation;
}
bool LauncherWidget::handleMouseEvent(QGraphicsSceneMouseEvent *event) const
bool LauncherWidget::handleMouseEvent(QGraphicsSceneMouseEvent *event)
{
if (event->buttons() & Qt::LeftButton &&
(event->pos() - event->buttonDownPos(Qt::LeftButton)).manhattanLength() > KGlobalSettings::dndEventDelay())
@ -590,6 +604,11 @@ void LauncherWidget::slotUpdateFonts()
m_subtextwidget->setFont(subtextfont);
}
void LauncherWidget::slotTimeout()
{
m_hoveranimation = animateHover(m_hoveranimation, !isUnderMouse());
}
class LauncherSearch : public QGraphicsWidget
{