diff options
| author | Gunnar Sletta <gunnar.sletta@jollamobile.com> | 2014-02-11 11:45:58 +0100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-02-13 20:40:42 +0100 |
| commit | 5b422304a9b97b628dc9990fd67e2f293d535b41 (patch) | |
| tree | bc7a7898b473dded6a1b5d7290e6c771ff4890a5 /src/gui/kernel/qplatformwindow.cpp | |
| parent | e8ba6922c33c4844487b7eb9c7c2038ae65d4920 (diff) | |
Expose QPlatformWindow::invalidateSurface as a virtual function.
This can be quite useful on some embedded systems to free up
graphics memory when windows are not used. QEglFSWindow already
implements the function.
Change-Id: I79b08efbd3c67d7be34df6a0e12dd184a92d48c5
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Diffstat (limited to 'src/gui/kernel/qplatformwindow.cpp')
| -rw-r--r-- | src/gui/kernel/qplatformwindow.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/gui/kernel/qplatformwindow.cpp b/src/gui/kernel/qplatformwindow.cpp index 2364f465b6..faaf418522 100644 --- a/src/gui/kernel/qplatformwindow.cpp +++ b/src/gui/kernel/qplatformwindow.cpp @@ -521,6 +521,20 @@ static inline const QScreen *effectiveScreen(const QWindow *window) } /*! + Invalidates the window's surface by releasing its surface buffers. + + Many platforms do not support releasing the surface memory, + and the default implementation does nothing. + + The platform window is expected to recreate the surface again if + it is needed. For instance, if an OpenGL context is made current + on this window. + */ +void QPlatformWindow::invalidateSurface() +{ +} + +/*! Helper function to get initial geometry on windowing systems which do not do smart positioning and also do not provide a means of centering a transient window w.r.t. its parent. For example this is useful on Windows |