vcl/inc/qt5/QtObject.hxx | 7 ++++++-
vcl/qt5/QtObject.cxx | 31 +++++++++++++++++++++----------
vcl/qt5/QtOpenGLContext.cxx | 9 +++++++++
3 files changed, 36 insertions(+), 11 deletions(-)
New commits:
commit b296b33cfbde5113f27ddef71a48380cb6ce5e06
Author: Michael Weghorn <m.wegh...@posteo.de>
AuthorDate: Fri Jun 21 19:53:50 2024 +0200
Commit: Michael Weghorn <m.wegh...@posteo.de>
CommitDate: Fri Jun 21 23:19:02 2024 +0200
tdf#149461 qt6: Provide a QWindow for OpenGL rendering
As described at [1], "QWindow supports rendering using
OpenGL [...]".
Using a QWindow for OpenGL rendering had been introduced
in
commit 56b19f9a814ae5a39ed760ee542d715493cd0bf3
Date: Fri Dec 14 12:44:20 2018 +0300
tdf#121247, tdf#121266 KDE5: Add basic support for OpenGL
, but then
commit 4366e0605214260e55a937173b0c2e02225dc843
Date: Tue May 24 11:34:59 2022 +0200
tdf#148864 Qt switch QtObjectWindow to QWidget
had switched from QWindow to QWidget, and OpenGL slide
transitions like the "Tiles" one stopped working.
At least for qt6, which now uses QtMultimedia for video
playback (see the tdf#145735 commits), issues like tdf#148864
("Kubuntu 22.04 LTS LibreOffice Impress 7.3.3 Fails to Play Embedded
Videos") and tdf#125517 ("LO Impress: Can't stop presentation
with video and go to the next slide") related to video playback
appear to be no problem, so switch back to using QWindow there.
Explicitly set the window background to transparent
in `QtOpenGLContext::ImplInit`, as not doing so
caused slide content in presentation mode to not
be updated properly when testing with the attachment 183972
from tdf#149461 on Wayland.
(This was not an issue when running on XWayland, i.e.
with QT_QPA_PLATFORM=xcb).
With this in place, OpenGL transitions work with qt6.
With QT_QPA_PLATFORM=xcb, it looks all fine in my tests
on Debian testing.
With QT_QPA_PLATFORM=wayland, the slide text from attachment 183972
sometimes incorrectly showed up for a fraction of a second after
the slide transition finished, then disappeared again until
it was triggered to show as it should (e.g. by pressing the right
arrow key), s. screencast attachment 194899 in tdf#149461.
A multitude of warnings like the following are shown on stderr
in that case, which don't show up for xcb:
warn:vcl.opengl:47352:47352:vcl/source/opengl/OpenGLHelper.cxx:709: GL
Error 0506 (invalid framebuffer operation) in file
/home/michi/development/git/libreoffice/slideshow/source/engine/opengl/TransitionImpl.cxx
at line 398
That looks like a separate issue to me, however which would
need further analysis.
Keep using the QtObjectWindow approach for qt5 to
not regress on video playback.
[1] https://doc.qt.io/qt-5/qtgui-index.html#opengl-and-opengl-es-integration
Change-Id: I6e1eb989254e2cbbfada6f719ee0518571df4c42
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/169347
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.wegh...@posteo.de>
diff --git a/vcl/inc/qt5/QtObject.hxx b/vcl/inc/qt5/QtObject.hxx
index bc5a8e584b8f..e5f9944d6b86 100644
--- a/vcl/inc/qt5/QtObject.hxx
+++ b/vcl/inc/qt5/QtObject.hxx
@@ -24,6 +24,7 @@
#include <QtCore/QObject>
#include <QtGui/QRegion>
+#include <QtGui/QWindow>
#include <QtWidgets/QWidget>
class QtFrame;
@@ -36,7 +37,11 @@ class QtObject final : public QObject, public SalObject
SystemEnvData m_aSystemData;
QtFrame* m_pParent;
- QtObjectWidget* m_pQWidget;
+
+ // window, required for OpenGL rendering
+ QWindow* m_pQWindow;
+ QWidget* m_pQWidget;
+
QRegion m_pRegion;
bool m_bForwardKey;
diff --git a/vcl/qt5/QtObject.cxx b/vcl/qt5/QtObject.cxx
index 229916bcd1ff..b9f1b804f95c 100644
--- a/vcl/qt5/QtObject.cxx
+++ b/vcl/qt5/QtObject.cxx
@@ -23,6 +23,7 @@
#include <QtFrame.hxx>
#include <QtWidget.hxx>
+#include <QtCore/QLibraryInfo>
#include <QtGui/QGuiApplication>
#include <QtGui/QKeyEvent>
#include <QtGui/QMouseEvent>
@@ -36,7 +37,19 @@ QtObject::QtObject(QtFrame* pParent, bool bShow)
if (!m_pParent || !pParent->GetQWidget())
return;
- m_pQWidget = new QtObjectWidget(*this);
+ if (QLibraryInfo::version().majorVersion() > 5)
+ {
+ m_pQWindow = new QWindow;
+ m_pQWidget = QWidget::createWindowContainer(m_pQWindow,
pParent->GetQWidget());
+ }
+ else
+ {
+ // with the qt5 VCL plugin, the above would cause issues with video
playback (s. tdf#148864, tdf#125517),
+ // which is not a problem with the QtMultimedia approach that the qt6
VCL plugin uses;
+ // stay with the QtObjectWidget introduced in commit
4366e0605214260e55a937173b0c2e02225dc843
+ m_pQWidget = new QtObjectWidget(*this);
+ m_pQWindow = m_pQWidget->windowHandle();
+ }
// set layout, used for video playback, see QtPlayer::createPlayerWindow
QVBoxLayout* layout = new QVBoxLayout;
@@ -58,10 +71,7 @@ QtObject::~QtObject()
}
}
-QWindow* QtObject::windowHandle() const
-{
- return m_pQWidget ? m_pQWidget->windowHandle() : nullptr;
-}
+QWindow* QtObject::windowHandle() const { return m_pQWindow; }
void QtObject::ResetClipRegion()
{
diff --git a/vcl/qt5/QtOpenGLContext.cxx b/vcl/qt5/QtOpenGLContext.cxx
index f0cf9b5f4c65..49322c8864ae 100644
--- a/vcl/qt5/QtOpenGLContext.cxx
+++ b/vcl/qt5/QtOpenGLContext.cxx
@@ -80,6 +80,15 @@ bool QtOpenGLContext::ImplInit()
}
m_pWindow->setSurfaceType(QSurface::OpenGLSurface);
+
+ // give window a transparent background, see
+ // https://doc.qt.io/qt-6/qwindow.html#setFormat
+ // Otherwise, slide content in a presentation using OpenGL transitions
+ // doesn't get updated with qt6 on Wayland
+ QSurfaceFormat format;
+ format.setAlphaBufferSize(8);
+ m_pWindow->setFormat(format);
+
m_pWindow->create();
m_pContext = new QOpenGLContext(m_pWindow);
commit 22270a54a2d73f96109ca851b1e1627910213645
Author: Michael Weghorn <m.wegh...@posteo.de>
AuthorDate: Fri Jun 21 19:38:13 2024 +0200
Commit: Michael Weghorn <m.wegh...@posteo.de>
CommitDate: Fri Jun 21 23:18:52 2024 +0200
tdf#149461 qt: Move setting layout to QtObject ctor
Move setting the layout for the QtObjectWidget
from the QtObjectWidget ctor to the QtObject ctor,
in preparation to also use that for QWidgets other
than the QtObjectWidget.
Change-Id: Ifbb0d853659bc8099bed40db2bbe8a8778077aa2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/169346
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.wegh...@posteo.de>
diff --git a/vcl/qt5/QtObject.cxx b/vcl/qt5/QtObject.cxx
index bde8b570ac2e..229916bcd1ff 100644
--- a/vcl/qt5/QtObject.cxx
+++ b/vcl/qt5/QtObject.cxx
@@ -37,6 +37,12 @@ QtObject::QtObject(QtFrame* pParent, bool bShow)
return;
m_pQWidget = new QtObjectWidget(*this);
+
+ // set layout, used for video playback, see QtPlayer::createPlayerWindow
+ QVBoxLayout* layout = new QVBoxLayout;
+ layout->setContentsMargins(0, 0, 0, 0);
+ m_pQWidget->setLayout(layout);
+
if (bShow)
m_pQWidget->show();
@@ -112,11 +118,6 @@ QtObjectWidget::QtObjectWidget(QtObject& rParent)
assert(m_rParent.frame() && m_rParent.frame()->GetQWidget());
setAttribute(Qt::WA_NoSystemBackground);
setAttribute(Qt::WA_OpaquePaintEvent);
-
- // set layout, used for video playback, see QtPlayer::createPlayerWindow
- QVBoxLayout* layout = new QVBoxLayout;
- layout->setContentsMargins(0, 0, 0, 0);
- setLayout(layout);
}
void QtObjectWidget::focusInEvent(QFocusEvent*)
