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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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22
src/ui/main_menu_ui_manager.cpp
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@@ -12,23 +12,21 @@ MainMenuUIManager::~MainMenuUIManager() {}
void MainMenuUIManager::init() {
auto start_game_button = std::make_unique<Button>();
auto start_game_button = std::make_unique<Button>(nullptr);
auto& back = start_game_button->set_background<Image>();
back.set_image("texture/ui/button001.png",
m_scene.scene_manager().app().texture_manager());
auto& fore = start_game_button->set_foreground<Label>();
fore.set_text("Start Game");
fore.set_scale(0.6f);
start_game_button->set_window_size(
m_scene.scene_manager().app().renderer().window_width(),
m_scene.scene_manager().app().renderer().window_height());
start_game_button->set_clicked(
[this]() { m_scene.scene_manager().request_push(SceneType::WORLD); });
start_game_button->set_scale(3.0f);
start_game_button->set_position(
m_scene.scene_manager().app().renderer().window_width() / 2.0f -
back.width() / 2.0f,
m_scene.scene_manager().app().renderer().window_height() / 2.0f -
back.height() / 2.0f);
start_game_button->set_anchor(Anchor::CENTER);
m_widgets.try_emplace("start game", std::move(start_game_button));
}
@@ -100,14 +98,6 @@ bool MainMenuUIManager::handle_mouse_button_event(const MouseButtonEvent& e) {
return false;
}
bool MainMenuUIManager::handle_window_resize_event(const WindowResizeEvent& e) {
auto it = m_widgets.find("start game");
if (it != m_widgets.end()) {
auto* start_game = dynamic_cast<Button*>(it->second.get());
if (start_game) {
start_game->set_position(e.width / 2 - start_game->width() / 2,
e.height / 2 - start_game->height() / 2);
}
}
for (auto& w : m_widgets) {
if (w.second->handle_window_resize_event(e)) {
return true;