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121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGUI/Margins.h>
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#include <LibGUI/Widget.h>
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namespace GUI {
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class TabWidget : public Widget {
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C_OBJECT(TabWidget)
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public:
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enum TabPosition {
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Top,
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Bottom,
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};
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virtual ~TabWidget() override;
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TabPosition tab_position() const { return m_tab_position; }
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void set_tab_position(TabPosition);
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Optional<size_t> active_tab_index() const;
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Widget* active_widget() { return m_active_widget.ptr(); }
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const Widget* active_widget() const { return m_active_widget.ptr(); }
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void set_active_widget(Widget*);
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void set_tab_index(int);
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int bar_height() const { return m_bar_visible ? 21 : 0; }
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GUI::Margins const& container_margins() const { return m_container_margins; }
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void set_container_margins(GUI::Margins const&);
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void add_widget(const StringView&, Widget&);
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void remove_widget(Widget&);
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template<class T, class... Args>
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T& add_tab(const StringView& title, Args&&... args)
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{
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auto t = T::construct(forward<Args>(args)...);
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add_widget(title, *t);
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return *t;
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}
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void remove_tab(Widget& tab) { remove_widget(tab); }
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void remove_all_tabs_except(Widget& tab);
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void set_tab_title(Widget& tab, const StringView& title);
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void set_tab_icon(Widget& tab, const Gfx::Bitmap*);
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void activate_next_tab();
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void activate_previous_tab();
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void set_text_alignment(Gfx::TextAlignment alignment) { m_text_alignment = alignment; }
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Gfx::TextAlignment text_alignment() const { return m_text_alignment; }
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bool uniform_tabs() const { return m_uniform_tabs; }
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void set_uniform_tabs(bool uniform_tabs) { m_uniform_tabs = uniform_tabs; }
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int uniform_tab_width() const;
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void set_bar_visible(bool bar_visible);
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bool is_bar_visible() const { return m_bar_visible; };
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void set_close_button_enabled(bool close_button_enabled) { m_close_button_enabled = close_button_enabled; };
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Function<void(size_t)> on_tab_count_change;
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Function<void(Widget&)> on_change;
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Function<void(Widget&)> on_middle_click;
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Function<void(Widget&)> on_tab_close_click;
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Function<void(Widget&, const ContextMenuEvent&)> on_context_menu_request;
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protected:
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TabWidget();
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virtual void paint_event(PaintEvent&) override;
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virtual void child_event(Core::ChildEvent&) override;
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virtual void resize_event(ResizeEvent&) override;
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virtual void mousedown_event(MouseEvent&) override;
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virtual void mouseup_event(MouseEvent&) override;
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virtual void mousemove_event(MouseEvent&) override;
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virtual void leave_event(Core::Event&) override;
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virtual void keydown_event(KeyEvent&) override;
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virtual void context_menu_event(ContextMenuEvent&) override;
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private:
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Gfx::IntRect child_rect_for_size(const Gfx::IntSize&) const;
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Gfx::IntRect button_rect(size_t index) const;
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Gfx::IntRect close_button_rect(size_t index) const;
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Gfx::IntRect bar_rect() const;
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Gfx::IntRect container_rect() const;
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void update_bar();
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void update_focus_policy();
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int bar_margin() const { return 2; }
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RefPtr<Widget> m_active_widget;
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struct TabData {
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int width(const Gfx::Font&) const;
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String title;
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RefPtr<Gfx::Bitmap> icon;
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Widget* widget { nullptr };
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};
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Vector<TabData> m_tabs;
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TabPosition m_tab_position { TabPosition::Top };
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Optional<size_t> m_hovered_tab_index;
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Optional<size_t> m_hovered_close_button_index;
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Optional<size_t> m_pressed_close_button_index;
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GUI::Margins m_container_margins { 2, 2, 2, 2 };
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Gfx::TextAlignment m_text_alignment { Gfx::TextAlignment::Center };
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bool m_uniform_tabs { false };
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bool m_bar_visible { true };
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bool m_close_button_enabled { false };
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};
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}
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