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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibGUI/Widget.h>
namespace GUI {
class TabWidget : public Widget {
C_OBJECT(TabWidget)
public:
enum TabPosition {
Top,
Bottom,
};
virtual ~TabWidget() override;
TabPosition tab_position() const { return m_tab_position; }
void set_tab_position(TabPosition);
int active_tab_index() const;
Widget* active_widget() { return m_active_widget.ptr(); }
const Widget* active_widget() const { return m_active_widget.ptr(); }
void set_active_widget(Widget*);
int bar_height() const { return 21; }
int container_padding() const { return 2; }
void add_widget(const StringView&, Widget&);
template<class T, class... Args>
inline NonnullRefPtr<T> add_tab(const StringView& title, Args&&... args)
{
auto t = T::construct(forward<Args>(args)...);
add_widget(title, *t);
return t;
}
protected:
TabWidget();
virtual void paint_event(PaintEvent&) override;
virtual void child_event(Core::ChildEvent&) override;
virtual void resize_event(ResizeEvent&) override;
virtual void mousedown_event(MouseEvent&) override;
virtual void mousemove_event(MouseEvent&) override;
virtual void leave_event(Core::Event&) override;
private:
Gfx::Rect child_rect_for_size(const Gfx::Size&) const;
Gfx::Rect button_rect(int index) const;
Gfx::Rect bar_rect() const;
Gfx::Rect container_rect() const;
void update_bar();
RefPtr<Widget> m_active_widget;
struct TabData {
Gfx::Rect rect(const Gfx::Font&) const;
int width(const Gfx::Font&) const;
String title;
Widget* widget { nullptr };
};
Vector<TabData> m_tabs;
TabPosition m_tab_position { TabPosition::Top };
int m_hovered_tab_index { -1 };
};
}
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