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QStyleOptionTab Class Reference

The QStyleOptionTab class is used to describe the parameters for drawing a tab bar. More...

 #include <QStyleOptionTab>

Inherits: QStyleOption.

Inherited by: QStyleOptionTabV2.

Public Types

enum CornerWidget { NoCornerWidgets, LeftCornerWidget, RightCornerWidget }
flags CornerWidgets
enum SelectedPosition { NotAdjacent, NextIsSelected, PreviousIsSelected }
enum StyleOptionType { Type }
enum StyleOptionVersion { Version }
enum TabPosition { Beginning, Middle, End, OnlyOneTab }

Public Functions

QStyleOptionTab ()
QStyleOptionTab ( const QStyleOptionTab & other )

Public Variables

CornerWidgets cornerWidgets
QIcon icon
TabPosition position
int row
SelectedPosition selectedPosition
QTabBar::Shape shape
QString text

Detailed Description

The QStyleOptionTab class is used to describe the parameters for drawing a tab bar.

The QStyleOptionTab class is used for drawing several built-in Qt widgets including QTabBar and the panel for QTabWidget. Note that to describe the parameters necessary for drawing a frame in Qt 4.1 or above, you must use the QStyleOptionFrameV2 subclass.

An instance of the QStyleOptiontabV2 class has type SO_Tab and version 1. The type is used internally by QStyleOption, its subclasses, and qstyleoption_cast() to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleOption subclass and your own styles. The version is used by QStyleOption subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast(), you normally do not need to check it.

If you create your own QStyle subclass, you should handle both QStyleOptionTab and QStyleOptionTabV2.

For an example demonstrating how style options can be used, see the Styles example.

See also QStyleOptionTabV2 and QStyleOption.

Member Type Documentation

enum QStyleOptionTab::CornerWidget
flags QStyleOptionTab::CornerWidgets

These flags indicate the corner widgets in a tab.

ConstantValueDescription
QStyleOptionTab::NoCornerWidgets0x00There are no corner widgets
QStyleOptionTab::LeftCornerWidget0x01Left corner widget
QStyleOptionTab::RightCornerWidget0x02Right corner widget

The CornerWidgets type is a typedef for QFlags<CornerWidget>. It stores an OR combination of CornerWidget values.

See also cornerWidgets.

enum QStyleOptionTab::SelectedPosition

This enum describes the position of the selected tab. Some styles need to draw a tab differently depending on whether or not it is adjacent to the selected tab.

ConstantValueDescription
QStyleOptionTab::NotAdjacent0The tab is not adjacent to a selected tab (or is the selected tab).
QStyleOptionTab::NextIsSelected1The next tab (typically the tab on the right) is selected.
QStyleOptionTab::PreviousIsSelected2The previous tab (typically the tab on the left) is selected.

See also selectedPosition.

enum QStyleOptionTab::StyleOptionType

This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass.

ConstantValueDescription
QStyleOptionTab::TypeSO_TabThe type of style option provided (SO_Tab for this class).

The type is used internally by QStyleOption, its subclasses, and qstyleoption_cast() to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleOption subclass and your own styles.

See also StyleOptionVersion.

enum QStyleOptionTab::StyleOptionVersion

This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass.

ConstantValueDescription
QStyleOptionTab::Version11

The version is used by QStyleOption subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast(), you normally do not need to check it.

See also StyleOptionType.

enum QStyleOptionTab::TabPosition

This enum describes the position of the tab.

ConstantValueDescription
QStyleOptionTab::Beginning0The tab is the first tab in the tab bar.
QStyleOptionTab::Middle1The tab is neither the first nor the last tab in the tab bar.
QStyleOptionTab::End2The tab is the last tab in the tab bar.
QStyleOptionTab::OnlyOneTab3The tab is both the first and the last tab in the tab bar.

See also position.

Member Function Documentation

QStyleOptionTab::QStyleOptionTab ()

Constructs a QStyleOptionTab object, initializing the members variables to their default values.

QStyleOptionTab::QStyleOptionTab ( const QStyleOptionTab & other )

Constructs a copy of the other style option.

Member Variable Documentation

CornerWidgets QStyleOptionTab::cornerWidgets

This variable holds an OR combination of CornerWidget values indicating the corner widgets of the tab bar.

The default value is NoCornerWidgets.

See also CornerWidget.

QIcon QStyleOptionTab::icon

This variable holds the icon for the tab.

The default value is an empty icon, i.e. an icon with neither a pixmap nor a filename.

TabPosition QStyleOptionTab::position

This variable holds the position of the tab in the tab bar.

The default value is Beginning, i.e. the tab is the first tab in the tab bar.

int QStyleOptionTab::row

This variable holds which row the tab is currently in.

The default value is 0, indicating the front row. Currently this property can only be 0.

SelectedPosition QStyleOptionTab::selectedPosition

This variable holds the position of the selected tab in relation to this tab.

The default value is NotAdjacent, i.e. the tab is not adjacent to a selected tab nor is it the selected tab.

QTabBar::Shape QStyleOptionTab::shape

This variable holds the tab shape used to draw the tab; by default QTabBar::RoundedNorth.

See also QTabBar::Shape.

QString QStyleOptionTab::text

This variable holds the text of the tab.

The default value is an empty string.

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