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Improve responsiveness of the sidebar

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I added a zerotimer to make the sidebar emit
currentChanged only after it has been updated as
pressed.
This commit is contained in:
Jens Bache-Wiig
2010-02-18 12:04:00 +01:00
parent 54b2ab7190
commit bd2ba2307b
3 changed files with 25 additions and 6 deletions
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25
src/plugins/coreplugin/fancytabwidget.cpp
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@@ -82,6 +82,10 @@ FancyTabBar::FancyTabBar(QWidget *parent)
setAttribute(Qt::WA_Hover, true);
setFocusPolicy(Qt::NoFocus);
setMouseTracking(true); // Needed for hover events
m_triggerTimer.setSingleShot(true);
// We use a zerotimer to keep the sidebar responsive
connect(&m_triggerTimer, SIGNAL(timeout()), this, SLOT(emitCurrentIndex()));
}
FancyTabBar::~FancyTabBar()
@@ -136,7 +140,6 @@ void FancyTabBar::mouseMoveEvent(QMouseEvent *e)
if (validIndex(m_hoverIndex)) {
m_tabs[m_hoverIndex]->fadeIn();
QRect oldHoverRect = m_hoverRect;
m_hoverRect = tabRect(m_hoverIndex);
}
}
@@ -207,6 +210,14 @@ QRect FancyTabBar::tabRect(int index) const
}
// This keeps the sidebar responsive since
// we get a repaint before loading the
// mode itself
void FancyTabBar::emitCurrentIndex()
{
emit currentChanged(m_currentIndex);
}
void FancyTabBar::mousePressEvent(QMouseEvent *e)
{
e->accept();
@@ -269,15 +280,21 @@ void FancyTabBar::paintTab(QPainter *painter, int tabIndex) const
painter->save();
QColor whiteOverlay(Qt::white);
whiteOverlay.setAlpha(int(m_tabs[tabIndex]->fader()/2));
QRect roundRect = rect.adjusted(5, 3, -5, -3);
painter->fillRect(rect, whiteOverlay);
painter->setPen(whiteOverlay);
painter->drawLine(rect.topLeft(), rect.topRight());
painter->drawLine(rect.bottomLeft(), rect.bottomRight());
/* QRect roundRect = rect.adjusted(5, 3, -5, -3);
painter->translate(0.5, 0.5);
painter->setRenderHint(QPainter::Antialiasing);
painter->setBrush(whiteOverlay);
whiteOverlay.setAlpha(int(m_tabs[tabIndex]->fader()));
painter->setPen(whiteOverlay);
painter->drawRoundedRect(roundRect, 3, 3);
*/
painter->restore();
}
}
}
QString tabText(this->tabText(tabIndex));
@@ -312,7 +329,7 @@ void FancyTabBar::setCurrentIndex(int index) {
if (isTabEnabled(index)) {
m_currentIndex = index;
update();
emit currentChanged(index);
m_triggerTimer.start(0);
}
}