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subcompositor/renderer: fixup handling of subsurfaces below the main one

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some apps (notably vlc 4) place a subsurface below the main surface (which is kinda cursed) but we have to accomodate for that
This commit is contained in:
Vaxry
2024-06-17 12:42:32 +02:00
parent 14ab0ecc5e
commit 1360677478
5 changed files with 75 additions and 15 deletions
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48
src/protocols/core/Subcompositor.cpp
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@@ -23,15 +23,29 @@ CWLSubsurfaceResource::CWLSubsurfaceResource(SP<CWlSubsurface> resource_, SP<CWL
if (!parent)
return;
std::erase(parent->subsurfaces, self.lock());
auto pushAboveIndex = [this](int idx) -> void {
for (auto& c : parent->subsurfaces) {
if (c->zIndex >= idx)
c->zIndex++;
}
};
std::erase_if(parent->subsurfaces, [this](const auto& e) { return e == self || !e; });
auto it = std::find(parent->subsurfaces.begin(), parent->subsurfaces.end(), SURF);
if (it == parent->subsurfaces.end()) {
LOGM(ERR, "Invalid surface reference in placeAbove");
parent->subsurfaces.emplace_back(self.lock());
} else
parent->subsurfaces.insert(it, self.lock());
LOGM(ERR, "Invalid surface reference in placeAbove, likely parent");
pushAboveIndex(1);
parent->subsurfaces.emplace_back(self);
zIndex = 1;
} else {
pushAboveIndex((*it)->zIndex);
zIndex = (*it)->zIndex;
parent->subsurfaces.emplace_back(self);
}
std::sort(parent->subsurfaces.begin(), parent->subsurfaces.end(), [](const auto& a, const auto& b) { return a->zIndex < b->zIndex; });
});
resource->setPlaceBelow([this](CWlSubsurface* r, wl_resource* surf) {
@@ -40,15 +54,29 @@ CWLSubsurfaceResource::CWLSubsurfaceResource(SP<CWlSubsurface> resource_, SP<CWL
if (!parent)
return;
std::erase(parent->subsurfaces, self.lock());
auto pushBelowIndex = [this](int idx) -> void {
for (auto& c : parent->subsurfaces) {
if (c->zIndex <= idx)
c->zIndex--;
}
};
std::erase_if(parent->subsurfaces, [this](const auto& e) { return e == self || !e; });
auto it = std::find(parent->subsurfaces.begin(), parent->subsurfaces.end(), SURF);
if (it == parent->subsurfaces.end()) {
LOGM(ERR, "Invalid surface reference in placeBelow");
parent->subsurfaces.emplace_back(self.lock());
} else
parent->subsurfaces.insert(it--, self.lock());
LOGM(ERR, "Invalid surface reference in placeBelow, likely parent");
pushBelowIndex(-1);
parent->subsurfaces.emplace_back(self);
zIndex = -1;
} else {
pushBelowIndex((*it)->zIndex);
zIndex = (*it)->zIndex;
parent->subsurfaces.emplace_back(self);
}
std::sort(parent->subsurfaces.begin(), parent->subsurfaces.end(), [](const auto& a, const auto& b) { return a->zIndex < b->zIndex; });
});
listeners.commitSurface = surface->events.commit.registerListener([this](std::any d) {