Different close buttons on tabs
سؤال
I am using QTabWidget, and I would like to know if I can use different icons for close buttons on tabs? I think style and setCornerWidget may not work for this case.
Thanks!
المحلول
I don't think that this is possible with a QTabWidget. You could use a QTabBar where you can use QTabBar::setTabButton to set a widget of your own design into the tab position.
نصائح أخرى
Use setStyleSheet() with
QTabBar::close-button {
image: url(close.png)
}
QTabBar::close-button:hover {
image: url(close-hover.png)
}
http://doc.qt.io/qt-4.8/stylesheet-examples.html#customizing-qtabwidget-and-qtabbar
The default close buttons on tabs are part of the QStyle
you are using.
From the Qt sources:
case PE_IndicatorTabClose: { if (d->tabBarcloseButtonIcon.isNull()) { d->tabBarcloseButtonIcon.addPixmap(QPixmap( QLatin1String(":/trolltech/styles/commonstyle/images/standardbutton-closetab-16.png")), QIcon::Normal, QIcon::Off); d->tabBarcloseButtonIcon.addPixmap(QPixmap( QLatin1String(":/trolltech/styles/commonstyle/images/standardbutton-closetab-down-16.png")), QIcon::Normal, QIcon::On); d->tabBarcloseButtonIcon.addPixmap(QPixmap( QLatin1String(":/trolltech/styles/commonstyle/images/standardbutton-closetab-hover-16.png")), QIcon::Active, QIcon::Off); }
From what it looks, you have to subclass QStyle and override PE_IndicatorTabClose
and return a different QIcon path.
#include <QProxyStyle>
class AppStyle : public QProxyStyle
{
Q_OBJECT
public:
AppStyle(QStyle *style = 0) : QProxyStyle(style) {}
void drawPrimitive(QStyle::PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
{
if (element == PE_IndicatorTabClose)
{
int size = proxy()->pixelMetric(QStyle::PM_SmallIconSize);
QIcon::Mode mode = option->state & State_Enabled ?
(option->state & State_Raised ? QIcon::Active : QIcon::Normal)
: QIcon::Disabled;
if (!(option->state & State_Raised)
&& !(option->state & State_Sunken)
&& !(option->state & QStyle::State_Selected))
mode = QIcon::Disabled;
QIcon::State state = option->state & State_Sunken ? QIcon::On : QIcon::Off;
QPixmap pixmap = QIcon(":myclose.png").pixmap(size, mode, state);
proxy()->drawItemPixmap(painter, option->rect, Qt::AlignCenter, pixmap);
}
else
{
QProxyStyle::drawPrimitive(element,option,painter,widget);
}
}
};
in main.cpp:
QApplication app(argc, argv);
app.setStyle(new AppStyle(app.style()));
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