81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
#pragma once
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#include <psemek/ui/element.hpp>
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#include <psemek/ui/box_shape.hpp>
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#include <vector>
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namespace psemek::ui
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{
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struct selector
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: element
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{
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selector();
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~selector() override;
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void set_parent(element * parent) override;
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children_range children() const override { return children_range_; }
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struct shape const & shape() const override { return shape_; }
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void reshape(math::box<float, 2> const & box) override;
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math::box<float, 2> size_constraints() const override;
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bool on_event(mouse_move const & e) override;
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bool on_event(mouse_click const & e) override;
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virtual std::size_t size() const;
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virtual void resize(std::size_t size);
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virtual std::size_t add(std::shared_ptr<element> child);
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virtual std::shared_ptr<element> get(std::size_t index) const;
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virtual void set_submenu(std::size_t index, std::shared_ptr<selector> submenu);
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virtual std::shared_ptr<selector> submenu(std::size_t index) const;
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virtual void clear();
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virtual math::interval<float> y_range(std::size_t index) const;
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using callback_type = std::function<void(std::size_t)>;
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virtual std::optional<std::size_t> selected() const;
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virtual void on_selected(callback_type callback);
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virtual void on_mouseover(std::function<void(std::optional<std::size_t>)> callback);
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virtual callback_type on_selected() const;
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virtual math::box<float, 2> const & item_box(std::size_t index) const { return child_boxes_[index]; }
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protected:
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// extra width for each element with a submenu
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virtual int submenu_extra() const { return 0; }
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// extra distance between successive elements
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virtual int y_extra() const { return 0; }
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virtual void on_submenu(std::size_t index);
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virtual void release_submenu();
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private:
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std::vector<std::shared_ptr<element>> children_;
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std::vector<element *> children_range_;
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box_shape shape_;
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std::vector<std::shared_ptr<selector>> submenu_;
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std::optional<std::size_t> active_submenu_;
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float active_submenu_y_ = 0.f;
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std::vector<math::box<float, 2>> child_boxes_;
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std::optional<std::size_t> selected_;
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callback_type callback_;
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std::function<void(std::optional<std::size_t>)> mouseover_callback_;
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};
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bool spawn_selector(element * root, std::shared_ptr<selector> selector, math::point<float, 2> const & position, std::function<void()> on_canceled = nullptr);
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}
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