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Handle buffer scales changing dynamically

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Summary:
Currently when a client changes it's buffer size the result is corrupt
until we move the window.

When a client buffer scale changes we need to redraw the whole window,
and most importantly flush the cached window quads, which reference the
scale.

This is not handled by the doSetGeometry() from the size changing as the
normalised size of the client remains the same so it no-ops.

Test Plan:
Opened gtk3-demo and changed screen scale. It's now perfect.
Patch for Qt to work correctly incoming.

Reviewers: #plasma, graesslin

Reviewed By: #plasma, graesslin

Subscribers: graesslin, plasma-devel, kwin, #kwin

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D7486
This commit is contained in:
David Edmundson 2017-08-24 17:57:38 +01:00
parent f0971532c9
commit 95c983e6d8
1 changed files with 4 additions and 0 deletions
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4
scene.cpp
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@ -399,6 +399,10 @@ void Scene::windowAdded(Toplevel *c)
m_windows[ c ] = w;
connect(c, SIGNAL(geometryShapeChanged(KWin::Toplevel*,QRect)), SLOT(windowGeometryShapeChanged(KWin::Toplevel*)));
connect(c, SIGNAL(windowClosed(KWin::Toplevel*,KWin::Deleted*)), SLOT(windowClosed(KWin::Toplevel*,KWin::Deleted*)));
//A change of scale won't affect the geometry in compositor co-ordinates, but will affect the window quads.
if (c->surface()) {
connect(c->surface(), &KWayland::Server::SurfaceInterface::scaleChanged, this, std::bind(&Scene::windowGeometryShapeChanged, this, c));
}
c->effectWindow()->setSceneWindow(w);
c->getShadow();
w->updateShadow(c->shadow());