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fbfa6543ab
The BrushTool is very cool, but it doesn't allow us to re-use any of the code in other classes. Many of the other tools have duplicated code for handling mouse events / keeping track of previous location, etc. This commit sets up BrushTool so that other tools can inherit from it and override some virtual functions to allow similar behavior without re-writing the code to keep track of mouse positions, etc. In particular, we add public setters/getters for `size` and `hardness` properties, and make `draw_point()` and `draw_line()` virtual so that derived classes can override them. Note: We still pass in `color` as a parameter for `draw_line()` and `draw_point()` instead of using `color_for()` directly because it doesn't really make sense to be constantly asking the ImageEditor for the color when it's not really changing (for instance along all the points of a line)
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/*
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* Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
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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();
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virtual ~BrushTool() override;
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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 Gfx::StandardCursor 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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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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