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Add ability to get the parent item from the vtable

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(still untested)
This commit is contained in:
Olivier Goffart 2021-01-26 10:29:24 +01:00
parent 1fda2e1c99
commit c2982d9ab3
10 changed files with 356 additions and 209 deletions
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23
api/sixtyfps-cpp/include/sixtyfps.h
View file

@ -65,6 +65,7 @@ using cbindgen_private::ItemVTable;
using ComponentRef = vtable::VRef<private_api::ComponentVTable>;
using ItemRef = vtable::VRef<private_api::ItemVTable>;
using ItemVisitorRefMut = vtable::VRefMut<cbindgen_private::ItemVisitorVTable>;
using cbindgen_private::ItemWeak;
}
using cbindgen_private::ComponentRc;
using cbindgen_private::EasingCurve;
@ -165,16 +166,17 @@ using cbindgen_private::NativeStyleMetrics;
namespace private_api {
constexpr inline ItemTreeNode make_item_node(std::uintptr_t offset,
const cbindgen_private::ItemVTable *vtable,
uint32_t child_count, uint32_t child_index)
uint32_t child_count, uint32_t child_index,
uint parent_index)
{
return ItemTreeNode { ItemTreeNode::Item_Body {
ItemTreeNode::Tag::Item, { vtable, offset }, child_count, child_index } };
ItemTreeNode::Tag::Item, { vtable, offset }, child_count, child_index, parent_index } };
}
constexpr inline ItemTreeNode make_dyn_node(std::uintptr_t offset)
constexpr inline ItemTreeNode make_dyn_node(std::uintptr_t offset, std::uint32_t parent_index)
{
return ItemTreeNode { ItemTreeNode::DynamicTree_Body { ItemTreeNode::Tag::DynamicTree,
offset } };
return ItemTreeNode { ItemTreeNode::DynamicTree_Body {
ItemTreeNode::Tag::DynamicTree, offset, parent_index } };
}
inline ItemRef get_item_ref(ComponentRef component, Slice<ItemTreeNode> item_tree, int index)
@ -183,6 +185,17 @@ inline ItemRef get_item_ref(ComponentRef component, Slice<ItemTreeNode> item_tre
return ItemRef { item.vtable, reinterpret_cast<char *>(component.instance) + item.offset };
}
inline ItemWeak parent_item(cbindgen_private::ComponentWeak component,
Slice<ItemTreeNode> item_tree, int index)
{
const auto &node = item_tree.ptr[index];
if (node.tag == ItemTreeNode::Tag::Item) {
return { component, node.item.parent_index };
} else {
return { component, node.dynamic_tree.parent_index };
}
}
}
using cbindgen_private::FocusEvent;

2
api/sixtyfps-cpp/include/vtable.h
View file

@ -167,6 +167,8 @@ public:
inner->strong_ref++;
return { VRc<VTable, X>(inner) };
}
VWeak<VTable, Dyn> into_dyn() const { return *reinterpret_cast<const VWeak<VTable, Dyn> *>(this); }
};