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LibGUI: Add new RangeSlider widget

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A new widget that allows the selection of a range between a defined min
and max value.
This commit is contained in:
Torstennator 2023-06-13 11:25:12 +02:00 • committed by Jelle Raaijmakers
parent da7bf5f785
commit 69650a5812
3 changed files with 308 additions and 0 deletions
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72
Userland/Libraries/LibGUI/RangeSlider.h Normal file
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/*
* Copyright (c) 2023, Torsten Engelmann <engelTorsten@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGUI/AbstractSlider.h>
namespace GUI {
class RangeSlider : public AbstractSlider {
C_OBJECT(RangeSlider);
public:
virtual ~RangeSlider() override = default;
void set_gradient_color(Gfx::Color, Gfx::Color);
void set_gradient_colors(Vector<Gfx::ColorStop>);
void set_show_label(bool);
bool show_label();
void set_lower_range(int value, AllowCallback allow_callback = AllowCallback::Yes);
void set_upper_range(int value, AllowCallback allow_callback = AllowCallback::Yes);
int lower_range();
int upper_range();
void set_range(int min, int max);
Function<void(int, int)> on_range_change;
protected:
explicit RangeSlider(Gfx::Orientation = Gfx::Orientation::Horizontal);
virtual void paint_event(PaintEvent&) override;
virtual void mousedown_event(MouseEvent&) override;
virtual void mousemove_event(MouseEvent&) override;
virtual void mouseup_event(MouseEvent&) override;
virtual void mousewheel_event(MouseEvent&) override;
private:
Gfx::IntRect frame_inner_rect() const;
Vector<Gfx::ColorStop> m_background_gradient = Vector { Gfx::ColorStop { { 0, 0, 0, 0 }, 0 }, Gfx::ColorStop { { 0, 0, 0, 255 }, 1 } };
virtual Optional<UISize> calculated_min_size() const override;
virtual Optional<UISize> calculated_preferred_size() const override;
int value_at(Gfx::IntPoint) const;
Gfx::IntRect knob_rect_for_value(int value) const;
bool m_show_label { true };
bool m_dragging { false };
bool m_hovered_lower_knob { false };
bool m_hovered_upper_knob { false };
int m_lower_range = 0;
int m_upper_range = 0;
int const c_knob_width = 7;
};
class HorizontalRangeSlider final : public RangeSlider {
C_OBJECT(HorizontalRangeSlider);
public:
virtual ~HorizontalRangeSlider() override = default;
private:
HorizontalRangeSlider()
: RangeSlider(Orientation::Horizontal)
{
}
};
}