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8b8f404146
These methods give us a simple way to move up and down the slider, without needing to repeat the 'set_value(value() + some_value)' pattern that multiple applications and libraries use.
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
/*
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* Copyright (c) 2018-2020, 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/Widget.h>
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namespace GUI {
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class AbstractSlider : public Widget {
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C_OBJECT_ABSTRACT(AbstractSlider);
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public:
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virtual ~AbstractSlider() override;
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void set_orientation(Orientation value);
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Orientation orientation() const { return m_orientation; }
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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 page_step() const { return m_page_step; }
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bool jump_to_cursor() const { return m_jump_to_cursor; }
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bool is_min() const { return m_value == m_min; }
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bool is_max() const { return m_value == m_max; }
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void set_range(int min, int max);
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virtual void set_value(int, AllowCallback = AllowCallback::Yes);
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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_step(int step) { m_step = step; }
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void set_page_step(int page_step);
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void set_jump_to_cursor(bool b) { m_jump_to_cursor = b; }
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void increase_slider_by(int delta) { set_value(value() + delta); }
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void decrease_slider_by(int delta) { set_value(value() - delta); }
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void increase_slider_by_page_steps(int page_steps) { set_value(value() + page_step() * page_steps); }
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void decrease_slider_by_page_steps(int page_steps) { set_value(value() - page_step() * page_steps); }
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void increase_slider_by_steps(int steps) { set_value(value() + step() * steps); }
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void decrease_slider_by_steps(int steps) { set_value(value() - step() * steps); }
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Function<void(int)> on_change;
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protected:
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explicit AbstractSlider(Orientation = Orientation::Vertical);
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private:
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void set_knob_hovered(bool);
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int m_value { 0 };
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int m_min { 0 };
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int m_max { 0 };
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int m_step { 1 };
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int m_page_step { 10 };
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bool m_jump_to_cursor { false };
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Orientation m_orientation { Orientation::Horizontal };
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};
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}
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