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fade out the tabs text at the edges of the tabbar if the tabs are too

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many for the space 

svn path=/trunk/KDE/kdelibs/; revision=1028649
This commit is contained in:
Marco Martin 2009-09-27 20:23:13 +00:00
parent 14fed09f70
commit 65a85e7a3d
1 changed files with 50 additions and 16 deletions
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66
private/nativetabbar.cpp
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@ -237,6 +237,23 @@ void NativeTabBar::paintEvent(QPaintEvent *event)
QFontMetrics metrics(painter.font());
QRect scrollButtonsRect;
foreach (QObject *child, children()) {
QToolButton *childWidget = qobject_cast<QToolButton *>(child);
if (childWidget) {
if (!childWidget->isVisible()) {
continue;
}
if (scrollButtonsRect.isValid()) {
scrollButtonsRect = scrollButtonsRect.united(childWidget->geometry());
} else {
scrollButtonsRect = childWidget->geometry();
}
}
}
for (int i = 0; i < count(); ++i) {
QRect rect = tabRect(i).adjusted(d->buttonLeft, d->buttonTop,
-d->buttonRight, -d->buttonBottom);
@ -263,8 +280,40 @@ void NativeTabBar::paintEvent(QPaintEvent *event)
textRect.setLeft(iconRect.right());
}
painter.setFont(Plasma::Theme::defaultTheme()->font(Plasma::Theme::DefaultFont));
painter.drawText(textRect, Qt::AlignCenter | Qt::TextHideMnemonic, tabText(i));
int endTabSpace = contentsRect().right() - scrollButtonsRect.width();
if (textRect.left() < endTabSpace) {
if (textRect.left() < contentsRect().left() || textRect.right() > endTabSpace) {
QPixmap buffer(textRect.size());
buffer.fill(Qt::transparent);
QPainter buffPainter(&buffer);
buffPainter.drawText(buffer.rect(), Qt::AlignCenter | Qt::TextHideMnemonic, tabText(i));
buffPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
QLinearGradient gradient(buffer.rect().topLeft(), buffer.rect().topRight());
if (textRect.left() < contentsRect().left()) {
gradient.setColorAt(0, Qt::transparent);
gradient.setColorAt((-(qreal)textRect.left())/(qreal)textRect.width(), Qt::transparent);
gradient.setColorAt(1, Qt::black);
} else {
gradient.setColorAt(0, Qt::black);
gradient.setColorAt(1 - (qreal)(textRect.right() - endTabSpace)/(qreal)textRect.width(), Qt::transparent);
gradient.setColorAt(1, Qt::transparent);
}
buffPainter.setBrush(gradient);
buffPainter.setPen(Qt::NoPen);
buffPainter.drawRect(buffer.rect());
buffPainter.end();
painter.drawPixmap(textRect, buffer, buffer.rect());
} else {
painter.drawText(textRect, Qt::AlignCenter | Qt::TextHideMnemonic, tabText(i));
}
}
if (isCloseButtonEnabled()) {
d->closeIcon.paint(&painter, QRect(closeButtonPos(i), QSize(KIconLoader::SizeSmall, KIconLoader::SizeSmall)) );
@ -272,21 +321,6 @@ void NativeTabBar::paintEvent(QPaintEvent *event)
}
QRect scrollButtonsRect;
foreach (QObject *child, children()) {
QToolButton *childWidget = qobject_cast<QToolButton *>(child);
if (childWidget) {
if (!childWidget->isVisible()) {
continue;
}
if (scrollButtonsRect.isValid()) {
scrollButtonsRect = scrollButtonsRect.united(childWidget->geometry());
} else {
scrollButtonsRect = childWidget->geometry();
}
}
}
if (scrollButtonsRect.isValid()) {
scrollButtonsRect.adjust(2, 4, -2, -4);