QStyleOptionViewItem Class
The QStyleOptionViewItem class is used to describe the parameters used to draw an item in a view widget. More...
| Header: | #include <QStyleOptionViewItem> |
| Inherits: | QStyleOption |
| Inherited By: |
Public Types
| enum | Position { Left, Right, Top, Bottom } |
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
Public Functions
| QStyleOptionViewItem() | |
| QStyleOptionViewItem(const QStyleOptionViewItem & other) |
- 2 public functions inherited from QStyleOption
Public Variables
| Qt::Alignment | decorationAlignment |
| Position | decorationPosition |
| QSize | decorationSize |
| Qt::Alignment | displayAlignment |
| QFont | font |
| bool | showDecorationSelected |
| Qt::TextElideMode | textElideMode |
- 7 public variables inherited from QStyleOption
Detailed Description
The QStyleOptionViewItem class is used to describe the parameters used to draw an item in a view widget.
QStyleOptionViewItem contains all the information that QStyle functions need to draw the items for Qt's model/view classes.
For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel 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 and Model/View Programming.
Member Type Documentation
enum QStyleOptionViewItem::Position
This enum describes the position of the item's decoration.
| Constant | Value | Description |
|---|---|---|
QStyleOptionViewItem::Left | 0 | On the left of the text. |
QStyleOptionViewItem::Right | 1 | On the right of the text. |
QStyleOptionViewItem::Top | 2 | Above the text. |
QStyleOptionViewItem::Bottom | 3 | Below the text. |
See also decorationPosition.
enum QStyleOptionViewItem::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 |
|---|---|---|
QStyleOptionViewItem::Type | SO_ViewItem | The type of style option provided (SO_ViewItem 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 QStyleOptionViewItem::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 |
|---|---|---|
QStyleOptionViewItem::Version | 1 | 1 |
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.
Member Function Documentation
QStyleOptionViewItem::QStyleOptionViewItem()
Constructs a QStyleOptionViewItem, initializing the members variables to their default values.
QStyleOptionViewItem::QStyleOptionViewItem(const QStyleOptionViewItem & other)
Constructs a copy of the other style option.
Member Variable Documentation
Qt::Alignment QStyleOptionViewItem::decorationAlignment
This variable holds the alignment of the decoration for the item.
The default value is Qt::AlignLeft.
Position QStyleOptionViewItem::decorationPosition
This variable holds the position of the decoration for the item.
The default value is Left.
See also Position.
QSize QStyleOptionViewItem::decorationSize
This variable holds the size of the decoration for the item.
The default value is QSize(-1, -1), i.e. an invalid size.
See also decorationAlignment and decorationPosition.
Qt::Alignment QStyleOptionViewItem::displayAlignment
This variable holds the alignment of the display value for the item.
The default value is Qt::AlignLeft.
QFont QStyleOptionViewItem::font
This variable holds the font used for the item.
By default, the application's default font is used.
See also QFont.
bool QStyleOptionViewItem::showDecorationSelected
This variable holds whether the decoration should be highlighted on selected items.
If this option is true, the branch and any decorations on selected items should be highlighted, indicating that the item is selected; otherwise, no highlighting is required. The default value is false.
See also QStyle::SH_ItemView_ShowDecorationSelected and QAbstractItemView.
Qt::TextElideMode QStyleOptionViewItem::textElideMode
This variable holds where ellipsis should be added for text that is too long to fit into an item.
The default value is Qt::ElideMiddle, i.e. the ellipsis appears in the middle of the text.
See also Qt::TextElideMode and QStyle::SH_ItemView_EllipsisLocation.
© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.