ViewportAttributes Class
(QWebPage::ViewportAttributes)The QWebPage::ViewportAttributes class describes hints that can be applied to a viewport. More...
| Header: | #include <ViewportAttributes> |
| qmake: | QT += webkitwidgets |
| Since: | Qt 4.7 |
Public Functions
| 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 |
| QSizeF | size() const |
| QWebPage::ViewportAttributes & | operator=(const QWebPage::ViewportAttributes & other) |
Detailed Description
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.
Member Function Documentation
ViewportAttributes::ViewportAttributes()
Constructs an empty QWebPage::ViewportAttributes.
ViewportAttributes::ViewportAttributes(const QWebPage::ViewportAttributes & other)
Constructs a QWebPage::ViewportAttributes which is a copy from other .
ViewportAttributes::~ViewportAttributes()
Destroys the QWebPage::ViewportAttributes.
qreal ViewportAttributes::devicePixelRatio() const
qreal ViewportAttributes::initialScaleFactor() const
Returns the initial scale of the viewport as a multiplier.
bool ViewportAttributes::isUserScalable() const
Determines whether or not the scale can be modified by the user.
bool ViewportAttributes::isValid() const
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.
qreal ViewportAttributes::maximumScaleFactor() const
Returns the maximum scale value of the viewport as a multiplier.
qreal ViewportAttributes::minimumScaleFactor() const
Returns the minimum scale value of the viewport as a multiplier.
QSizeF ViewportAttributes::size() const
Returns the size of the viewport.
QWebPage::ViewportAttributes & ViewportAttributes::operator=(const QWebPage::ViewportAttributes & other)
Assigns the given QWebPage::ViewportAttributes to this viewport hints and returns a reference to this.
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