mirror of
https://github.com/LadybirdBrowser/ladybird.git
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94ca55cefd
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
93 lines
3.7 KiB
C++
93 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibGUI/GFrame.h>
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class GScrollBar;
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class GScrollableWidget : public GFrame {
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C_OBJECT(GScrollableWidget)
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public:
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virtual ~GScrollableWidget() override;
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Size content_size() const { return m_content_size; }
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int content_width() const { return m_content_size.width(); }
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int content_height() const { return m_content_size.height(); }
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Rect visible_content_rect() const;
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Rect widget_inner_rect() const;
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void scroll_into_view(const Rect&, Orientation);
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void scroll_into_view(const Rect&, bool scroll_horizontally, bool scroll_vertically);
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void set_scrollbars_enabled(bool);
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bool is_scrollbars_enabled() const { return m_scrollbars_enabled; }
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Size available_size() const;
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GScrollBar& vertical_scrollbar() { return *m_vertical_scrollbar; }
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const GScrollBar& vertical_scrollbar() const { return *m_vertical_scrollbar; }
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GScrollBar& horizontal_scrollbar() { return *m_horizontal_scrollbar; }
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const GScrollBar& horizontal_scrollbar() const { return *m_horizontal_scrollbar; }
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GWidget& corner_widget() { return *m_corner_widget; }
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const GWidget& corner_widget() const { return *m_corner_widget; }
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void scroll_to_top();
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void scroll_to_bottom();
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int width_occupied_by_vertical_scrollbar() const;
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int height_occupied_by_horizontal_scrollbar() const;
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void set_should_hide_unnecessary_scrollbars(bool b) { m_should_hide_unnecessary_scrollbars = b; }
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bool should_hide_unnecessary_scrollbars() const { return m_should_hide_unnecessary_scrollbars; }
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Point to_content_position(const Point& widget_position) const;
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Point to_widget_position(const Point& content_position) const;
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protected:
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explicit GScrollableWidget(GWidget* parent);
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virtual void custom_layout() override;
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virtual void resize_event(GResizeEvent&) override;
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virtual void mousewheel_event(GMouseEvent&) override;
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virtual void did_scroll() {}
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void set_content_size(const Size&);
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void set_size_occupied_by_fixed_elements(const Size&);
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private:
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void update_scrollbar_ranges();
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RefPtr<GScrollBar> m_vertical_scrollbar;
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RefPtr<GScrollBar> m_horizontal_scrollbar;
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RefPtr<GWidget> m_corner_widget;
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Size m_content_size;
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Size m_size_occupied_by_fixed_elements;
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bool m_scrollbars_enabled { true };
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bool m_should_hide_unnecessary_scrollbars { false };
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};
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