void TabBarPrivate::layoutButtons()
{
int bw = tabbar->height();
int w = tabbar->width();
offset = bw * 4;
if (tabbar->isLeftToRight()) {
scrollFirstButton->setGeometry(0, 0, bw, bw);
scrollFirstButton->setIcon(QIcon(QPixmap(arrow_leftmost_xpm)));
scrollBackButton->setGeometry(bw, 0, bw, bw);
scrollBackButton->setIcon(QIcon(QPixmap(arrow_left_xpm)));
scrollForwardButton->setGeometry(bw*2, 0, bw, bw);
scrollForwardButton->setIcon(QIcon(QPixmap(arrow_right_xpm)));
scrollLastButton->setGeometry(bw*3, 0, bw, bw);
scrollLastButton->setIcon(QIcon(QPixmap(arrow_rightmost_xpm)));
} else {
scrollFirstButton->setGeometry(w - bw, 0, bw, bw);
scrollFirstButton->setIcon(QIcon(QPixmap(arrow_rightmost_xpm)));
scrollBackButton->setGeometry(w - 2*bw, 0, bw, bw);
scrollBackButton->setIcon(QIcon(QPixmap(arrow_right_xpm)));
scrollForwardButton->setGeometry(w - 3*bw, 0, bw, bw);
scrollForwardButton->setIcon(QIcon(QPixmap(arrow_left_xpm)));
scrollLastButton->setGeometry(w - 4*bw, 0, bw, bw);
scrollLastButton->setIcon(QIcon(QPixmap(arrow_leftmost_xpm)));
}
}
void TabBarPrivate::drawTab(QPainter& painter, QRect& rect, const QString& text, bool active)
{
QPolygon polygon;
if (tabbar->isLeftToRight())
polygon << QPoint(rect.x(), rect.y())
<< QPoint(rect.x(), rect.bottom() - 3)
<< QPoint(rect.x() + 2, rect.bottom())
<< QPoint(rect.right() - 4, rect.bottom())
<< QPoint(rect.right() - 2, rect.bottom() - 2)
<< QPoint(rect.right() + 5, rect.top());
else
polygon << QPoint(rect.right(), rect.top())
<< QPoint(rect.right(), rect.bottom() - 3)
<< QPoint(rect.right() - 2, rect.bottom())
<< QPoint(rect.x() + 4, rect.bottom())
<< QPoint(rect.x() + 2, rect.bottom() - 2)
<< QPoint(rect.x() - 5, rect.top());
painter.save();
// fill it first
QBrush bg = tabbar->palette().background();
if (active)
bg = tabbar->palette().base();
painter.setBrush(bg);
painter.setPen(QPen(Qt::NoPen));
painter.drawPolygon(polygon);
// draw the lines
painter.setPen(tabbar->palette().color(QPalette::Dark));
painter.setRenderHint(QPainter::Antialiasing);
if (!active) {
const bool reverseLayout = tabbar->isRightToLeft();
painter.drawLine(rect.x() - (reverseLayout ? 5 : 0), rect.y(),
rect.right() + (reverseLayout ? 0 : 5), rect.top());
}
painter.drawPolyline(polygon);
painter.setPen(tabbar->palette().color(QPalette::ButtonText));
QFont f = font(active);
painter.setFont(f);
QFontMetrics fm = painter.fontMetrics();
int tx = rect.x() + (rect.width() - fm.width(text)) / 2;
int ty = rect.y() + (rect.height() - fm.height()) / 2 + fm.ascent();
painter.drawText(tx, ty, text);
painter.restore();
}
void TabBarPrivate::layoutTabs()
{
tabRects.clear();
QFont f = font(true);
QFontMetrics fm(f, tabbar);
if (tabbar->isLeftToRight()) {
// left to right
int x = 0;
for (int c = 0; c < tabs.count(); c++) {
QRect rect;
if (c >= firstTab - 1) {
QString text = tabs[ c ];
int tw = fm.width(text) + 4;
rect = QRect(x, 0, tw + 20, tabbar->height());
x = x + tw + 20;
}
tabRects.append(rect);
}
lastTab = tabRects.count();
for (int i = 0; i < tabRects.count(); i++)
if (tabRects[i].right() - 10 + offset > tabbar->width()) {
lastTab = i;
break;
}
} else {
// right to left
int x = tabbar->width() - offset;
for (int c = 0; c < tabs.count(); c++) {
QRect rect;
if (c >= firstTab - 1) {
QString text = tabs[ c ];
int tw = fm.width(text) + 4;
rect = QRect(x - tw - 20, 0, tw + 20, tabbar->height());
x = x - tw - 20;
}
tabRects.append(rect);
}
lastTab = tabRects.count();
for (int i = tabRects.count() - 1; i > 0; i--)
if (tabRects[i].left() > 0) {
lastTab = i + 1;
break;
}
}
}
