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LibGUI: Remove leading G from filenames
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316 changed files with 965 additions and 966 deletions
118
Libraries/LibGUI/ScrollBar.h
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118
Libraries/LibGUI/ScrollBar.h
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/*
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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 <AK/Function.h>
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#include <LibCore/Timer.h>
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#include <LibGUI/Widget.h>
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namespace GUI {
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class ScrollBar final : public Widget {
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C_OBJECT(ScrollBar)
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public:
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virtual ~ScrollBar() override;
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Orientation orientation() const { return m_orientation; }
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bool is_scrollable() const { return max() != min(); }
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int value() const { return m_value; }
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int min() const { return m_min; }
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int max() const { return m_max; }
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int step() const { return m_step; }
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int big_step() const { return m_big_step; }
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void set_min(int min) { set_range(min, max()); }
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void set_max(int max) { set_range(min(), max); }
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void set_range(int min, int max);
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void set_value(int value);
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void set_step(int step) { m_step = step; }
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void set_big_step(int big_step) { m_big_step = big_step; }
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bool has_scrubber() const;
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Function<void(int)> on_change;
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enum Component {
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Invalid,
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DecrementButton,
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IncrementButton,
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Gutter,
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Scrubber,
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};
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private:
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explicit ScrollBar(Widget* parent);
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explicit ScrollBar(Orientation, Widget* parent);
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virtual void paint_event(PaintEvent&) 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 mousewheel_event(MouseEvent&) override;
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virtual void leave_event(Core::Event&) override;
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virtual void change_event(Event&) override;
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int default_button_size() const { return 16; }
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int button_size() const { return length(orientation()) <= (default_button_size() * 2) ? length(orientation()) / 2 : default_button_size(); }
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int button_width() const { return orientation() == Orientation::Vertical ? width() : button_size(); }
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int button_height() const { return orientation() == Orientation::Horizontal ? height() : button_size(); }
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Gfx::Rect decrement_button_rect() const;
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Gfx::Rect increment_button_rect() const;
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Gfx::Rect decrement_gutter_rect() const;
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Gfx::Rect increment_gutter_rect() const;
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Gfx::Rect scrubber_rect() const;
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int scrubber_size() const;
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int scrubbable_range_in_pixels() const;
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void on_automatic_scrolling_timer_fired();
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void set_automatic_scrolling_active(bool);
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int m_min { 0 };
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int m_max { 0 };
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int m_value { 0 };
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int m_step { 1 };
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int m_big_step { 5 };
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bool m_scrubbing { false };
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int m_scrub_start_value { 0 };
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Gfx::Point m_scrub_origin;
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Orientation m_orientation { Orientation::Vertical };
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Component m_hovered_component { Component::Invalid };
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bool m_scrubber_in_use { false };
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enum class AutomaticScrollingDirection {
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None = 0,
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Decrement,
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Increment,
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};
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AutomaticScrollingDirection m_automatic_scrolling_direction { AutomaticScrollingDirection::None };
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RefPtr<Core::Timer> m_automatic_scrolling_timer;
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};
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}
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