The QWebPage::ViewportAttributes class describes hints that can be applied to a viewport. 更多...
| 头： | #include <ViewportAttributes> |
| Since: | Qt 4.7 |
| ViewportAttributes () | |
| ViewportAttributes (const QWebPage::ViewportAttributes & other ) | |
| ~ViewportAttributes () | |
| qreal | devicePixelRatio () const |
| qreal | initialScaleFactor () const |
| bool | isUserScalable () const |
| bool | isValid () const |
| qreal | maximumScaleFactor () const |
| qreal | minimumScaleFactor () const |
| QSize | size () const |
| QWebPage::ViewportAttributes & | operator= (const QWebPage::ViewportAttributes & other ) |
The QWebPage::ViewportAttributes class describes hints that can be applied to a viewport.
QWebPage::ViewportAttributes provides a description of a viewport, such as viewport geometry, initial scale factor with limits, plus information about whether a user should be able to scale the contents in the viewport or not, ie. by zooming.
ViewportAttributes can be set by a web author using the viewport meta tag extension, documented at Safari Reference Library: Using the Viewport Meta Tag .
All values might not be set, as such when dealing with the hints, the developer needs to check whether the values are valid. Negative values denote an invalid qreal value.
构造空的 QWebPage::ViewportAttributes .
构造 QWebPage::ViewportAttributes which is a copy from other .
销毁 QWebPage::ViewportAttributes .
Returns the initial scale of the viewport as a multiplier.
Determines whether or not the scale can be modified by the user.
Returns whether this is a valid ViewportAttributes or not.
An invalid ViewportAttributes will have an empty QSize , negative values for scale factors and true for the boolean isUserScalable .
Returns the maximum scale value of the viewport as a multiplier.
Returns the minimum scale value of the viewport as a multiplier.
Returns the size of the viewport.
赋值给定 QWebPage::ViewportAttributes to this viewport hints and returns a reference to this.
