[Qt-interest] Stylesheet: some style "specialization" are not taken into account

[David Geldreich]

Hi all,

I am wondering if I am making a mistake, or if it could be a Qt bug.

I had a QToolBar that was customized via a stylesheet. I changed the layout (QLayout vs QSplitter) of my top widget and the spacing/padding for the QToolBar was no longer working.

I made a little example to reproduce the problem.

If I give something like :
QToolBar { background-color: red; spacing: 0px;  padding: 0px; }
QToolBar#MainToolbar { background-color: blue; spacing: 20px; padding: 10px;}

I expect the spacing/padding to be overrided for MainToolbar; but this is no longer the case. The entry is taken into account as it s background is blue, only some fields seems to be "ignored".
Changing the spacing/padding of QToolBar is working but not QToolBar#MainToolbar

I am using Qt 4.7.1 (build from sources) on OSX 10.6 and it was also reproduced on Windows Seven

I found nothing similar on http://bugreports.qt.nokia.com.

Thanks in advance.

Here is the complete minimal example to reproduce the problem :

#include <QAction>
#include <QApplication>
#include <QDebug>
#include <QFile>
#include <QSplitter>
#include <QToolBar>
#include <QVBoxLayout>
#include <QWidget>
#include <QWindowsStyle>

int main(int argc, char **argv)
{
    QApplication::setStyle(new QWindowsStyle);
    
    QApplication app(argc, argv);
    
    QString cssStr = "QToolButton { background-color: green; }"
    "QToolButton:on { color: blue; }"
    "QToolBar { background-color: red; spacing: 0px;  padding: 0px; }"
    "QToolBar#MainToolbar { background-color: blue; spacing: 20px; padding: 10px;}";
    app.setStyleSheet(cssStr);
    
    QToolBar *toolbar = new QToolBar;
    toolbar->setObjectName("MainToolbar");
    QAction *action1 = new QAction("One", toolbar);
    action1->setCheckable(true);
    QAction *action2= new QAction("Two", toolbar);
    action2->setCheckable(true);
    QAction *action3 = new QAction("Three", toolbar);
    action3->setCheckable(true);
    toolbar->addAction(action1);
    toolbar->addAction(action2);
    toolbar->addAction(action3);
    
    toolbar->show();
    qDebug() << toolbar->objectName();

    return app.exec();
}