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https://github.com/RGBCube/serenity
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160bda7228
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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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 "Tool.h"
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namespace PixelPaint {
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class BrushTool : public Tool {
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public:
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BrushTool() = default;
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virtual ~BrushTool() override = default;
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virtual void on_mousedown(Layer*, MouseEvent&) override;
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virtual void on_mousemove(Layer*, MouseEvent&) override;
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virtual void on_mouseup(Layer*, MouseEvent&) override;
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virtual GUI::Widget* get_properties_widget() override;
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virtual Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap>> cursor() override { return Gfx::StandardCursor::Crosshair; }
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void set_size(int size) { m_size = size; }
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int size() const { return m_size; }
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void set_hardness(int hardness) { m_hardness = hardness; }
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int hardness() const { return m_hardness; }
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double get_falloff(double distance)
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{
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double multiplicand = hardness() == 100 ? 1.0 : 1.0 / (100 - hardness());
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return (1.0 - double { distance / size() }) * multiplicand;
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}
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protected:
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virtual Color color_for(GUI::MouseEvent const& event);
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virtual void draw_point(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& point);
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virtual void draw_line(Gfx::Bitmap& bitmap, Gfx::Color const& color, Gfx::IntPoint const& start, Gfx::IntPoint const& end);
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private:
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RefPtr<GUI::Widget> m_properties_widget;
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int m_size { 20 };
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int m_hardness { 80 };
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bool m_was_drawing { false };
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bool m_has_clicked { false };
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Gfx::IntPoint m_last_position;
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};
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}
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