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feat(ui): introduce anchor-based widget positioning system

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Replace set_position with anchor and offset for relative positioning. Add parent pointer to widget hierarchy. Remove manual resize logic in UI managers.
This commit is contained in:
zhenyan121
2026-07-13 14:52:35 +08:00
parent 0cbb353a2a
commit f5e53fd13d
14 changed files with 241 additions and 114 deletions
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20
src/ui/world_ui_manager.cpp
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@@ -11,16 +11,15 @@ WorldUIManager::WorldUIManager(WorldScene& scene) : m_scene(scene) {}
WorldUIManager::~WorldUIManager() {}
void WorldUIManager::init() {
auto crosshair = std::make_unique<Image>();
auto crosshair = std::make_unique<Image>(nullptr);
crosshair->set_image("texture/ui/0.png",
m_scene.scene_manager().app().texture_manager());
auto& renderer = m_scene.scene_manager().app().renderer();
crosshair->set_scale(3.0f).set_position(
renderer.window_width() / 2 - crosshair->width() / 2,
renderer.window_height() / 2 - crosshair->height() / 2);
crosshair->set_window_size(renderer.window_width(),
renderer.window_height());
crosshair->set_anchor(Anchor::CENTER);
crosshair->set_scale(3.0f);
m_widgets.try_emplace("crosshair", std::move(crosshair));
}
void WorldUIManager::update(float dt) {
@@ -93,15 +92,6 @@ bool WorldUIManager::handle_mouse_button_event(const MouseButtonEvent& e) {
return false;
}
bool WorldUIManager::handle_window_resize_event(const WindowResizeEvent& e) {
auto it = m_widgets.find("crosshair");
if (it != m_widgets.end()) {
auto* crosshair = dynamic_cast<Image*>(it->second.get());
if (crosshair) {
crosshair->set_position(e.width / 2.0f - crosshair->width() / 2.0f,
e.height / 2.0f -
crosshair->height() / 2.0f);
}
}
for (auto& w : m_widgets) {
if (w.second->handle_window_resize_event(e)) {
return true;