Styling QDockWidget's titlebar buttons

[THRESHE]

Hi everybody!

I need to change images of title bar buttons of a QDockWidget. The docs say that it can be done with custom QStyle.

Could anyone give me a hint ?

[jpn]

Get yourself a [WIKI]proxy style[/WIKI], reimplement QStyle::standardIcon() and return something fancy for QStyle::SP_TitleBarNormalButton and QStyle::SP_TitleBarCloseButton.

[THRESHE]

Thanks I'll try that

[THRESHE]

I've tried to follow your advice but it doesn't work

class MyStyle : public ProxyStyle
 {
 public:
     MyStyle(const QString &baseStyle);
 
     int pixelMetric(PixelMetric metric, const QStyleOption* option = 0,
					 const QWidget* widget = 0) const;
 
	QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption* option = 0,
					   const QWidget* widget = 0) const;
 };

class MyStyle : public ProxyStyle
 {
 public:
     MyStyle(const QString &baseStyle);
 
     int pixelMetric(PixelMetric metric, const QStyleOption* option = 0,
					 const QWidget* widget = 0) const;
					 
	QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption* option = 0,
					   const QWidget* widget = 0) const;
 };

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int MyStyle::pixelMetric(PixelMetric metric, const QStyleOption* option,
					 const QWidget* widget) const
{
	if (metric == PM_DockWidgetHandleExtent || metric == PM_DockWidgetSeparatorExtent)
	{
		qDebug()<<"PM_DockWidgetHandleExtent";
		return 110;
	}
	else
		return ProxyStyle::pixelMetric(metric, option, widget);
}
 
QIcon MyStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption* option,
					   const QWidget* widget) const
{
	if(standardIcon == SP_TitleBarNormalButton)
		return QIcon(QPixmap(":/resources/backfordropdown.jpg"));
	else
		return ProxyStyle::standardIcon(standardIcon, option, widget);
}

int MyStyle::pixelMetric(PixelMetric metric, const QStyleOption* option,
					 const QWidget* widget) const
{
	if (metric == PM_DockWidgetHandleExtent || metric == PM_DockWidgetSeparatorExtent)
	{
		qDebug()<<"PM_DockWidgetHandleExtent";
		return 110;
	}
	else
		return ProxyStyle::pixelMetric(metric, option, widget);
}

QIcon MyStyle::standardIcon(StandardPixmap standardIcon, const QStyleOption* option,
					   const QWidget* widget) const
{
	if(standardIcon == SP_TitleBarNormalButton)
		return QIcon(QPixmap(":/resources/backfordropdown.jpg"));
	else
		return ProxyStyle::standardIcon(standardIcon, option, widget);
}

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[jpn]

Sorry for misleading, but as QStyle::standardIcon() says:

Warning: Because of binary compatibility constraints, this function is not virtual. If you want to provide your own icons in a QStyle subclass, reimplement the standardIconImplementation() slot in your subclass instead. The standardIcon() function will dynamically detect the slot and call it.

So, switch to QStyle::standardIconImplementation()...

[THRESHE]

It doesn't work that way either

class MyStyle : public ProxyStyle
{
	public:
		MyStyle(const QString &baseStyle);
 
		int pixelMetric(PixelMetric metric, const QStyleOption* option = 0,
					 const QWidget* widget = 0) const;
 
	public slots:
		QIcon standardIconImplementation(StandardPixmap standardIcon, const QStyleOption* option = 0,
					   const QWidget* widget = 0) const;
 };

class MyStyle : public ProxyStyle
{
	public:
		MyStyle(const QString &baseStyle);
 
		int pixelMetric(PixelMetric metric, const QStyleOption* option = 0,
					 const QWidget* widget = 0) const;
			
	public slots:
		QIcon standardIconImplementation(StandardPixmap standardIcon, const QStyleOption* option = 0,
					   const QWidget* widget = 0) const;
 };

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int MyStyle::pixelMetric(PixelMetric metric, const QStyleOption* option,
					 const QWidget* widget) const
{
	if (metric == PM_DockWidgetHandleExtent || metric == PM_DockWidgetSeparatorExtent)
	{
		qDebug()<<"PM_DockWidgetHandleExtent";
		return 110;
	}
	else
		return ProxyStyle::pixelMetric(metric, option, widget);
}
 
QIcon MyStyle::standardIconImplementation(StandardPixmap standardIcon, const QStyleOption* option,
					   const QWidget* widget) const
{
	if(standardIcon == SP_TitleBarNormalButton)
		return QIcon(QPixmap(":/resources/backfordropdown.jpg"));
	else
		return ProxyStyle::standardIcon(standardIcon, option, widget);
}

int MyStyle::pixelMetric(PixelMetric metric, const QStyleOption* option,
					 const QWidget* widget) const
{
	if (metric == PM_DockWidgetHandleExtent || metric == PM_DockWidgetSeparatorExtent)
	{
		qDebug()<<"PM_DockWidgetHandleExtent";
		return 110;
	}
	else
		return ProxyStyle::pixelMetric(metric, option, widget);
}

QIcon MyStyle::standardIconImplementation(StandardPixmap standardIcon, const QStyleOption* option,
					   const QWidget* widget) const
{
	if(standardIcon == SP_TitleBarNormalButton)
		return QIcon(QPixmap(":/resources/backfordropdown.jpg"));
	else
		return ProxyStyle::standardIcon(standardIcon, option, widget);
}

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pixelMetric also doesn't work

[jpn]

Your MyStyle class is missing the required Q_OBJECT macro. Make sure to re-run qmake after adding it.

[THRESHE]

Thanks now it works