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22585e2845
Now that we use RectMask internally to store the selection, we can expose more powerful APIs to allow for better control over the image selection.
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, 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 <LibCore/Timer.h>
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#include <LibGfx/Rect.h>
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#include "Mask.h"
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namespace PixelPaint {
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class ImageEditor;
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// Coordinates are image-relative.
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class Selection {
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public:
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enum class MergeMode {
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Set,
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Add,
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Subtract,
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Intersect,
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__Count,
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};
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explicit Selection(ImageEditor&);
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bool is_empty() const { return m_mask.is_null(); }
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void clear();
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void merge(Mask const&, MergeMode);
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void merge(Gfx::IntRect const& rect, MergeMode mode) { merge(Mask::full(rect), mode); }
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Gfx::IntRect bounding_rect() const { return m_mask.bounding_rect(); }
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[[nodiscard]] bool is_selected(int x, int y) const { return m_mask.get(x, y) > 0; }
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[[nodiscard]] bool is_selected(Gfx::IntPoint const& point) const { return is_selected(point.x(), point.y()); }
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[[nodiscard]] u8 get_selection_alpha(int x, int y) const { return m_mask.get(x, y); }
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[[nodiscard]] u8 get_selection_alpha(Gfx::IntPoint const& point) const { return get_selection_alpha(point.x(), point.y()); }
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void paint(Gfx::Painter&);
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void draw_marching_ants(Gfx::Painter&, Gfx::IntRect const&) const;
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void draw_marching_ants(Gfx::Painter&, Mask const&) const;
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void begin_interactive_selection() { m_in_interactive_selection = true; }
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void end_interactive_selection() { m_in_interactive_selection = false; }
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private:
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ImageEditor& m_editor;
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Mask m_mask;
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RefPtr<Core::Timer> m_marching_ants_timer;
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int m_marching_ants_offset { 0 };
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bool m_in_interactive_selection { false };
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void draw_marching_ants_pixel(Gfx::Painter&, int x, int y) const;
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};
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}
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