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PixelPaint: Expose more complex selection operations

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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.
This commit is contained in:
Davipb 2021-06-20 10:53:41 -03:00 • committed by Andreas Kling
parent d922e35579
commit 22585e2845
4 changed files with 38 additions and 3 deletions
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17
Userland/Applications/PixelPaint/Selection.h
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@ -18,13 +18,28 @@ class ImageEditor;
// Coordinates are image-relative.
class Selection {
public:
enum class MergeMode {
Set,
Add,
Subtract,
Intersect,
__Count,
};
explicit Selection(ImageEditor&);
bool is_empty() const { return m_mask.is_null(); }
void clear();
void set(Gfx::IntRect const& rect) { m_mask = Mask::full(rect); }
void merge(Mask const&, MergeMode);
void merge(Gfx::IntRect const& rect, MergeMode mode) { merge(Mask::full(rect), mode); }
Gfx::IntRect bounding_rect() const { return m_mask.bounding_rect(); }
[[nodiscard]] bool is_selected(int x, int y) const { return m_mask.get(x, y) > 0; }
[[nodiscard]] bool is_selected(Gfx::IntPoint const& point) const { return is_selected(point.x(), point.y()); }
[[nodiscard]] u8 get_selection_alpha(int x, int y) const { return m_mask.get(x, y); }
[[nodiscard]] u8 get_selection_alpha(Gfx::IntPoint const& point) const { return get_selection_alpha(point.x(), point.y()); }
void paint(Gfx::Painter&);
void draw_marching_ants(Gfx::Painter&, Gfx::IntRect const&) const;