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			65 lines
		
	
	
	
		
			2.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
	
		
			2.1 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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|  * Copyright (c) 2022, Torsten Engelmann <engelTorsten@gmx.de>
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|  *
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|  * SPDX-License-Identifier: BSD-2-Clause
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|  */
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| 
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| #pragma once
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| 
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| #include "../ImageEditor.h"
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| #include "Tool.h"
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| 
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| namespace PixelPaint {
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| 
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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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| 
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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 ErrorOr<GUI::Widget*> get_properties_widget() override;
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|     virtual Variant<Gfx::StandardCursor, NonnullRefPtr<Gfx::Bitmap const>> cursor() override
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|     {
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|         if (m_editor && m_editor->scale() != m_scale_last_created_cursor)
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|             refresh_editor_cursor();
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|         return m_cursor;
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|     }
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| 
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|     void set_size(int size);
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|     int size() const { return m_size; }
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| 
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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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| 
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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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| 
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| protected:
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|     virtual StringView tool_name() const override { return "Brush Tool"sv; }
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| 
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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 color, Gfx::IntPoint point);
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|     virtual void draw_line(Gfx::Bitmap& bitmap, Gfx::Color color, Gfx::IntPoint start, Gfx::IntPoint end);
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|     virtual NonnullRefPtr<Gfx::Bitmap> build_cursor();
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|     void refresh_editor_cursor();
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|     float m_scale_last_created_cursor = 0;
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| 
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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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|     NonnullRefPtr<Gfx::Bitmap const> m_cursor = build_cursor();
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| };
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| 
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| }
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