QWaylandView Class
The QWaylandView class represents a view of a surface on an output. More...
| Header: | #include <QWaylandView> |
| qmake: | QT += waylandcompositor |
| Since: | Qt 5.8 |
| Instantiated By: | WaylandView |
| Inherits: | QObject |
This class was introduced in Qt 5.8.
Properties
- allowDiscardFrontBuffer : bool
- bufferLocked : bool
- output : QWaylandOutput*
- surface : QWaylandSurface*
Public Functions
| bool | allowDiscardFrontBuffer() const |
| bool | isBufferLocked() const |
| QWaylandOutput * | output() const |
| QObject * | renderObject() const |
| void | setAllowDiscardFrontBuffer(bool discard) |
| void | setBufferLocked(bool locked) |
| void | setOutput(QWaylandOutput *output) |
| void | setSurface(QWaylandSurface *surface) |
| QWaylandSurface * | surface() const |
Signals
| void | allowDiscardFrontBufferChanged() |
| void | bufferLockedChanged() |
| void | outputChanged() |
| void | surfaceChanged() |
Detailed Description
The QWaylandView corresponds to the presentation of a surface on a specific output, managing the buffers that contain the contents to be rendered. You can have several views into the same surface.
Property Documentation
allowDiscardFrontBuffer : bool
By default, the view locks the current buffer until advance() is called. Set this property to true to allow Qt to release the buffer when the primary view is no longer using it.
This can be used to avoid the situation where a secondary view that updates on a lower frequency will throttle the frame rate of the client application.
Access functions:
| bool | allowDiscardFrontBuffer() const |
| void | setAllowDiscardFrontBuffer(bool discard) |
Notifier signal:
| void | allowDiscardFrontBufferChanged() |
bufferLocked : bool
This property holds whether the view's buffer is currently locked. When the buffer is locked, advance() will not advance to the next buffer and returns false.
The default is false.
Access functions:
| bool | isBufferLocked() const |
| void | setBufferLocked(bool locked) |
Notifier signal:
| void | bufferLockedChanged() |
output : QWaylandOutput*
This property holds the output on which this view displays its surface.
Access functions:
| QWaylandOutput * | output() const |
| void | setOutput(QWaylandOutput *output) |
Notifier signal:
| void | outputChanged() |
surface : QWaylandSurface*
This property holds the surface viewed by this QWaylandView.
Access functions:
| QWaylandSurface * | surface() const |
| void | setSurface(QWaylandSurface *surface) |
Notifier signal:
| void | surfaceChanged() |