QStyleOptionTab Class
The QStyleOptionTab class is used to describe the parameters for drawing a tab bar. More...
| Header: | #include <QStyleOptionTab> |
| CMake: | find_package(Qt6 COMPONENTS Widgets REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::Widgets) |
| qmake: | QT += widgets |
| Inherits: | QStyleOption |
Public Types
| enum | CornerWidget { NoCornerWidgets, LeftCornerWidget, RightCornerWidget } |
| flags | CornerWidgets |
| enum | SelectedPosition { NotAdjacent, NextIsSelected, PreviousIsSelected } |
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
| enum | TabFeature { None, HasFrame } |
| flags | TabFeatures |
| enum | TabPosition { Beginning, Middle, End, OnlyOneTab } |
Public Functions
| QStyleOptionTab(const QStyleOptionTab &other) | |
| QStyleOptionTab() |
Public Variables
| QStyleOptionTab::CornerWidgets | cornerWidgets |
| bool | documentMode |
| QIcon | icon |
| QSize | iconSize |
| QSize | leftButtonSize |
| QStyleOptionTab::TabPosition | position |
| QSize | rightButtonSize |
| int | row |
| QStyleOptionTab::SelectedPosition | selectedPosition |
| QTabBar::Shape | shape |
| int | tabIndex |
| QString | text |
Detailed Description
The QStyleOptionTab class is used for drawing several built-in Qt widgets including QTabBar and the panel for QTabWidget.
An instance of the QStyleOptionTab class has type SO_Tab and version 3. 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.
For performance reasons, there are few member functions and the access to the member variables is direct (i.e., using the . or -> operator). This makes the structures straightforward to use and emphasizes that these are simply parameters used by the style functions.
For an example demonstrating how style options can be used, see the Styles example.
See also QStyleOption.
Member Type Documentation
enum QStyleOptionTab::CornerWidget
flags QStyleOptionTab::CornerWidgets
These flags indicate the corner widgets in a tab.
| Constant | Value | Description |
|---|---|---|
QStyleOptionTab::NoCornerWidgets | 0x00 | There are no corner widgets |
QStyleOptionTab::LeftCornerWidget | 0x01 | Left corner widget |
QStyleOptionTab::RightCornerWidget | 0x02 | Right 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.
| Constant | Value | Description |
|---|---|---|
QStyleOptionTab::NotAdjacent | 0 | The tab is not adjacent to a selected tab (or is the selected tab). |
QStyleOptionTab::NextIsSelected | 1 | The next tab (typically the tab on the right) is selected. |
QStyleOptionTab::PreviousIsSelected | 2 | The 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.
| Constant | Value | Description |
|---|---|---|
QStyleOptionTab::Type | SO_Tab | The 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.
| Constant | Value | Description |
|---|---|---|
QStyleOptionTab::Version | 1 | 3 |
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::TabFeature
flags QStyleOptionTab::TabFeatures
Describes the various features that a tab button can have.
| Constant | Value | Description |
|---|---|---|
QStyleOptionTab::None | 0x00 | A normal tab button. |
QStyleOptionTab::HasFrame | 0x01 | The tab button is positioned on a tab frame |
The TabFeatures type is a typedef for QFlags<TabFeature>. It stores an OR combination of TabFeature values.
See also QStyleOptionToolBar::features.
enum QStyleOptionTab::TabPosition
This enum describes the position of the tab.
| Constant | Value | Description |
|---|---|---|
QStyleOptionTab::Beginning | 0 | The tab is the first tab in the tab bar. |
QStyleOptionTab::Middle | 1 | The tab is neither the first nor the last tab in the tab bar. |
QStyleOptionTab::End | 2 | The tab is the last tab in the tab bar. |
QStyleOptionTab::OnlyOneTab | 3 | The tab is both the first and the last tab in the tab bar. |
See also position.
Member Function Documentation
QStyleOptionTab::QStyleOptionTab(const QStyleOptionTab &other)
Constructs a copy of the other style option.
QStyleOptionTab::QStyleOptionTab()
Constructs a QStyleOptionTab object, initializing the members variables to their default values.
Member Variable Documentation
QStyleOptionTab::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.
bool QStyleOptionTab::documentMode
This variable holds whether the tabbar is in document mode.
The default value is false;
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.
QSize QStyleOptionTab::iconSize
This variable holds the size for the icons
The default value is QSize(-1, -1), i.e. an invalid size; use QStyle::pixelMetric() to find the default icon size for tab bars.
See also QTabBar::iconSize().
QSize QStyleOptionTab::leftButtonSize
This variable holds the size for the left widget on the tab.
The default value is QSize(-1, -1), i.e. an invalid size;
QStyleOptionTab::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.
QSize QStyleOptionTab::rightButtonSize
This variable holds the size for the right widget on the tab.
The default value is QSize(-1, -1), i.e. an invalid size;
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.
QStyleOptionTab::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.
int QStyleOptionTab::tabIndex
This variable holds the index for the tab being represented.
The default value is -1, i.e. a tab not on a tabbar;
QString QStyleOptionTab::text
This variable holds the text of the tab
The default value is an empty string.