AuroraMiddleware/qt5base-lts
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix bug on X11 with WA_TranslucentBackground and native child windows.

Browse Source 
The native child windows need to inherit the parent's visual in order
to have a translucent background as well.

Surface with type QSurface::OpenGLSurface should not be forced to use
the parent window's visual - the parent visual for instance, might not
even be GL capable.

Changing WA_TranslucentBackground during runtime is not supported, for
two reasons:

1) Other platform plugins seem not to support it
2) It would require recreating X windows.

Task-number: QTBUG-29625

Change-Id: Ic1474dd2de99069027481c7db6bf865f9b8d616d
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
This commit is contained in:
Gatis Paeglis 2013-11-05 12:06:28 +01:00 committed by The Qt Project
parent eb5c0f4b12
commit b088e4827f
2 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/plugins/platforms/xcb/qxcbwindow.cpp
View File

@ -280,8 +280,12 @@ void QXcbWindow::create()
if (parent()) {
xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
m_embedded = parent()->window()->type() == Qt::ForeignWindow;
}
QSurfaceFormat parentFormat = parent()->window()->requestedFormat();
if (window()->surfaceType() != QSurface::OpenGLSurface && parentFormat.hasAlpha()) {
window()->setFormat(parentFormat);
}
}
m_format = window()->requestedFormat();
#if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB)

7
src/widgets/kernel/qwidget_qpa.cpp
View File

@ -118,11 +118,12 @@ void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyO
win->resize(q->size());
win->setScreen(QGuiApplication::screens().value(topData()->screenIndex, 0));
if (q->testAttribute(Qt::WA_TranslucentBackground)) {
QSurfaceFormat format;
QSurfaceFormat format = win->requestedFormat();
if ((flags & Qt::Window) && win->surfaceType() != QSurface::OpenGLSurface
&& q->testAttribute(Qt::WA_TranslucentBackground)) {
format.setAlphaBufferSize(8);
win->setFormat(format);
}
win->setFormat(format);
if (QWidget *nativeParent = q->nativeParentWidget()) {
if (nativeParent->windowHandle()) {