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CopperSpice API
1.8.1
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The QStyleOptionGraphicsItem class is used to describe the parameters needed to draw a QGraphicsItem. More...
Public Types | |
enum | StyleOptionType |
enum | StyleOptionVersion |
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enum | OptionType |
enum | StyleOptionType |
enum | StyleOptionVersion |
Public Methods | |
QStyleOptionGraphicsItem () | |
QStyleOptionGraphicsItem (const QStyleOptionGraphicsItem &other) | |
QStyleOptionGraphicsItem & | operator= (const QStyleOptionGraphicsItem &other) = default |
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QStyleOption (const QStyleOption &other) | |
QStyleOption (int version=QStyleOption::Version, int type=SO_Default) | |
~QStyleOption () | |
void | initFrom (const QWidget *widget) |
QStyleOption & | operator= (const QStyleOption &other) |
Static Public Methods | |
static qreal | levelOfDetailFromTransform (const QTransform &worldTransform) |
Additional Inherited Members | |
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int | type |
int | version |
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T | qstyleoption_cast (const QStyleOption *option) |
T | qstyleoption_cast (QStyleOption *option) |
The QStyleOptionGraphicsItem class is used to describe the parameters needed to draw a QGraphicsItem.
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.
This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass.
Constant | Value | Description |
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QStyleOptionGraphicsItem::Type | SO_GraphicsItem | The type of style option provided (SO_GraphicsItem 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.
This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass.
Constant | Value | Description |
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QStyleOptionGraphicsItem::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.
QStyleOptionGraphicsItem::QStyleOptionGraphicsItem | ( | ) |
Constructs an empty QStyleOptionGraphicsItem.
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inline |
Copy constructs a new QStyleOptionGraphicsItem from other.
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static |
Returns the level of detail from the worldTransform.
Its value represents the maximum value of the height and width of a unity rectangle, mapped using the worldTransform of the painter used to draw the item. By default, if no transformations are applied, its value is 1. If zoomed out 1:2, the level of detail will be 0.5, and if zoomed in 2:1, its value is 2.
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default |
Copy assigns from other and returns a reference to this object.