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Repeater in C++

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This commit is contained in:
Olivier Goffart 2020-06-17 14:39:33 +02:00
parent 8651acbef4
commit 096fd7bbb4
7 changed files with 194 additions and 70 deletions
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40
api/sixtyfps-cpp/include/sixtyfps.h
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@ -1,4 +1,8 @@
#pragma once
#include <vector>
#include <memory>
namespace sixtyfps::internal {
// Workaround https://github.com/eqrion/cbindgen/issues/43
struct ComponentVTable;
@ -47,9 +51,14 @@ constexpr inline ItemTreeNode<uint8_t> make_item_node(std::uintptr_t offset,
const internal::ItemVTable *vtable,
uint32_t child_count, uint32_t child_index)
{
return ItemTreeNode<uint8_t> { ItemTreeNode<uint8_t>::Tag::Item,
{ ItemTreeNode<uint8_t>::Item_Body { {vtable, offset}, child_count,
child_index } } };
return ItemTreeNode<uint8_t> { ItemTreeNode<uint8_t>::Item_Body {
ItemTreeNode<uint8_t>::Tag::Item, {vtable, offset}, child_count, child_index } };
}
constexpr inline ItemTreeNode<uint8_t> make_dyn_node(std::uintptr_t offset)
{
return ItemTreeNode<uint8_t> { ItemTreeNode<uint8_t>::DynamicTree_Body {
ItemTreeNode<uint8_t>::Tag::DynamicTree, offset } };
}
using internal::sixtyfps_visit_item_tree;
@ -61,4 +70,29 @@ using internal::GridLayoutCellData;
using internal::GridLayoutData;
using internal::Constraint;
// models
template<typename C>
struct Repeater {
std::vector<std::unique_ptr<C>> data;
// FIXME: use array_view (aka Slice)
void update_model(void *, int count) {
data.clear();
for (auto i = 0; i < count; ++i) {
auto x = std::make_unique<C>();
x->update_data(i, nullptr);
data.push_back(std::move(x));
}
}
void visit(ItemVisitorRefMut visitor) const {
for (const auto &x : data) {
VRef<ComponentVTable> ref{&C::component_type, x.get()};
ref.vtable->visit_children_item(ref, -1, visitor);
}
}
};
} // namespace sixtyfps