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Qt 4.8
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Qt 4.8
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The QStyleOptionViewItem class is used to describe the parameters used to draw an item in a view widget. More...
#include <qstyleoption.h>
Public Types | |
| enum | Position { Left, Right, Top, Bottom } |
| This enum describes the position of the item's decoration. More... | |
| enum | StyleOptionType { Type = SO_ViewItem } |
| This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass. More... | |
| enum | StyleOptionVersion { Version = 1 } |
| This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass. More... | |
 Public Types inherited from QStyleOption | |
| enum | OptionType { SO_Default, SO_FocusRect, SO_Button, SO_Tab, SO_MenuItem, SO_Frame, SO_ProgressBar, SO_ToolBox, SO_Header, SO_Q3DockWindow, SO_DockWidget, SO_Q3ListViewItem, SO_ViewItem, SO_TabWidgetFrame, SO_TabBarBase, SO_RubberBand, SO_ToolBar, SO_GraphicsItem, SO_Complex = 0xf0000, SO_Slider, SO_SpinBox, SO_ToolButton, SO_ComboBox, SO_Q3ListView, SO_TitleBar, SO_GroupBox, SO_SizeGrip, SO_CustomBase = 0xf00, SO_ComplexCustomBase = 0xf000000 } |
| This enum is used internally by QStyleOption, its subclasses, and qstyleoption_cast() to determine the type of style option. More... | |
| enum | StyleOptionType { Type = SO_Default } |
| This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass. More... | |
| enum | StyleOptionVersion { Version = 1 } |
| This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass. More... | |
Public Functions | |
| QStyleOptionViewItem () | |
| Constructs a QStyleOptionViewItem, initializing the members variables to their default values. More... | |
| QStyleOptionViewItem (const QStyleOptionViewItem &other) | |
| Constructs a copy of the other style option. More... | |
| Public Functions inherited from QStyleOption | |
| void | init (const QWidget *w) |
| Use initFrom(widget) instead. More... | |
| void | initFrom (const QWidget *w) |
| QStyleOption & | operator= (const QStyleOption &other) |
| Assign other to this QStyleOption. More... | |
| QStyleOption (int version=QStyleOption::Version, int type=SO_Default) | |
| Constructs a QStyleOption with the specified version and type. More... | |
| QStyleOption (const QStyleOption &other) | |
| Constructs a copy of other. More... | |
| ~QStyleOption () | |
| Destroys this style option object. More... | |
Public Variables | |
| Qt::Alignment | decorationAlignment |
| the alignment of the decoration for the item More... | |
| Position | decorationPosition |
| the position of the decoration for the item More... | |
| QSize | decorationSize |
| the size of the decoration for the item More... | |
| Qt::Alignment | displayAlignment |
| the alignment of the display value for the item More... | |
| QFont | font |
| the font used for the item More... | |
| bool | showDecorationSelected |
| whether the decoration should be highlighted on selected items More... | |
| Qt::TextElideMode | textElideMode |
| where ellipsis should be added for text that is too long to fit into an item More... | |
| Public Variables inherited from QStyleOption | |
| Qt::LayoutDirection | direction |
| the text layout direction that should be used when drawing text in the control More... | |
| QFontMetrics | fontMetrics |
| the font metrics that should be used when drawing text in the control More... | |
| QPalette | palette |
| the palette that should be used when painting the control More... | |
| QRect | rect |
| the area that should be used for various calculations and painting More... | |
| QStyle::State | state |
| the style flags that are used when drawing the control More... | |
| int | type |
| the option type of the style option More... | |
| int | version |
| the version of the style option More... | |
Protected Functions | |
| QStyleOptionViewItem (int version) | |
Additional Inherited Members | |
| Related Functions inherited from QStyleOption | |
| T | qstyleoption_cast (const QStyleOption *option) |
| T | qstyleoption_cast (QStyleOption *option) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More... | |
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 widgets/styles{Styles} example.
Definition at line 539 of file qstyleoption.h.
This enum describes the position of the item's decoration.
| Enumerator | |
|---|---|
| Left | |
| Right | |
| Top | |
| Bottom | |
Definition at line 545 of file qstyleoption.h.
This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass.
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.
| Enumerator | |
|---|---|
| Type | |
Definition at line 542 of file qstyleoption.h.
This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass.
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.
| Enumerator | |
|---|---|
| Version | |
Definition at line 543 of file qstyleoption.h.
| QStyleOptionViewItem::QStyleOptionViewItem | ( | ) |
Constructs a QStyleOptionViewItem, initializing the members variables to their default values.
Definition at line 5220 of file qstyleoption.cpp.
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inline |
Constructs a copy of the other style option.
Definition at line 556 of file qstyleoption.h.
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protected |
Definition at line 5231 of file qstyleoption.cpp.
| QStyleOptionViewItem::decorationAlignment |
the alignment of the decoration for the item
The default value is Qt::AlignLeft.
Definition at line 548 of file qstyleoption.h.
Referenced by QItemDelegate::doLayout(), QItemDelegate::drawDecoration(), QCommonStylePrivate::isViewItemCached(), QCommonStylePrivate::viewItemLayout(), and QAbstractItemView::viewOptions().
| QStyleOptionViewItem::decorationPosition |
the position of the decoration for the item
The default value is Left .
Definition at line 550 of file qstyleoption.h.
Referenced by QItemDelegate::doLayout(), QCommonStylePrivate::isViewItemCached(), QItemDelegatePrivate::textLayoutBounds(), QCommonStylePrivate::viewItemLayout(), QCommonStylePrivate::viewItemSize(), QListView::viewOptions(), and QAbstractItemView::viewOptions().
| QStyleOptionViewItem::decorationSize |
the size of the decoration for the item
The default value is QSize(-1, -1), i.e. an invalid size.
Definition at line 551 of file qstyleoption.h.
Referenced by QItemDelegate::decoration(), QComboMenuDelegate::getStyleOption(), QStyledItemDelegate::initStyleOption(), QCommonStylePrivate::isViewItemCached(), QItemDelegate::paint(), QItemDelegate::rect(), QItemDelegatePrivate::textLayoutBounds(), QItemDelegate::updateEditorGeometry(), QCommonStylePrivate::viewItemSize(), QListView::viewOptions(), and QAbstractItemView::viewOptions().
| QStyleOptionViewItem::displayAlignment |
the alignment of the display value for the item
The default value is Qt::AlignLeft.
Definition at line 547 of file qstyleoption.h.
Referenced by QItemDelegate::doLayout(), QItemDelegate::drawDisplay(), QStyledItemDelegate::initStyleOption(), QCommonStylePrivate::isViewItemCached(), QItemDelegate::setOptions(), QCommonStylePrivate::viewItemDrawText(), QCommonStylePrivate::viewItemLayout(), QListView::viewOptions(), and QAbstractItemView::viewOptions().
| QStyleOptionViewItem::font |
the font used for the item
By default, the application's default font is used.
Definition at line 552 of file qstyleoption.h.
Referenced by QItemDelegate::drawDisplay(), QStyledItemDelegate::initStyleOption(), QCommonStylePrivate::isViewItemCached(), QFontFamilyDelegate::paint(), QItemDelegate::rect(), QItemDelegate::setOptions(), QFontFamilyDelegate::sizeHint(), QItemDelegate::updateEditorGeometry(), QCommonStylePrivate::viewItemDrawText(), QCommonStylePrivate::viewItemSize(), QComboBoxListView::viewOptions(), and QAbstractItemView::viewOptions().
| QStyleOptionViewItem::showDecorationSelected |
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.
Definition at line 553 of file qstyleoption.h.
Referenced by QTreeViewPrivate::adjustViewOptionsForIndex(), QItemDelegate::doLayout(), QItemDelegate::drawBackground(), QTreeView::drawBranches(), QWindowsVistaStyle::drawPrimitive(), QWindowsStyle::drawPrimitive(), QTreeView::drawRow(), QColumnViewDelegate::paint(), QCompleterItemDelegate::paint(), QStyledItemDelegate::updateEditorGeometry(), QItemDelegate::updateEditorGeometry(), QCommonStylePrivate::viewItemLayout(), QComboBoxListView::viewOptions(), QTableView::viewOptions(), QListView::viewOptions(), and QAbstractItemView::viewOptions().
| QStyleOptionViewItem::textElideMode |
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.
Definition at line 549 of file qstyleoption.h.
Referenced by QItemDelegate::drawDisplay(), QCommonStylePrivate::viewItemDrawText(), and QAbstractItemView::viewOptions().