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Merge dom and component focus (#978)

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Instead of two levels of focus with `focus` and `selected`, use a recursive
level. The components set the one "active" and hbox/vbox/dbox 

Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
This commit is contained in:
Ayaan
2025-03-19 20:03:05 +05:30
committed by GitHub
parent 8519e9b0f3
commit b0e087ecef
38 changed files with 431 additions and 341 deletions
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22
src/ftxui/dom/hbox.cpp
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@@ -20,22 +20,20 @@ class HBox : public Node {
public:
explicit HBox(Elements children) : Node(std::move(children)) {}
private:
void ComputeRequirement() override {
requirement_.min_x = 0;
requirement_.min_y = 0;
requirement_.flex_grow_x = 0;
requirement_.flex_grow_y = 0;
requirement_.flex_shrink_x = 0;
requirement_.flex_shrink_y = 0;
requirement_.selection = Requirement::NORMAL;
requirement_ = Requirement{};
for (auto& child : children_) {
child->ComputeRequirement();
if (requirement_.selection < child->requirement().selection) {
requirement_.selection = child->requirement().selection;
requirement_.selected_box = child->requirement().selected_box;
requirement_.selected_box.x_min += requirement_.min_x;
requirement_.selected_box.x_max += requirement_.min_x;
// Propagate the focused requirement.
if (requirement_.focused.Prefer(child->requirement().focused)) {
requirement_.focused = child->requirement().focused;
requirement_.focused.box.Shift(requirement_.min_x, 0);
}
// Extend the min_x and min_y to contain all the children
requirement_.min_x += child->requirement().min_x;
requirement_.min_y =
std::max(requirement_.min_y, child->requirement().min_y);