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PixelPaint: Add simple dodge and burn function to BrushTool

This patch adds three new modes to the brush-tool where it is now
possible to use a dodge or burn function with the brush and a soft mode
where the overdraw is reduced so that the stroke looks much softer.
The dodge and burn functions are used to brighten or darken the colors
in the affected area of the brush. The user can decide if the
highlights, midtones or shadows should be prioritized by the brush.
This commit is contained in:
Torstennator 2023-07-23 16:41:54 +02:00 committed by Sam Atkins
parent b9b4ca064f
commit 411ffb7954
2 changed files with 224 additions and 8 deletions

View file

@ -55,9 +55,27 @@ protected:
float m_scale_last_created_cursor = 0;
private:
enum class BrushMode {
Normal,
Soft,
Dodge,
Burn,
__Count,
};
enum class PriorityMode {
Highlights,
Midtones,
Shadows,
__Count,
};
BrushMode m_mode = BrushMode::Normal;
PriorityMode m_priority = PriorityMode::Highlights;
RefPtr<GUI::Widget> m_properties_widget;
int m_size { 20 };
int m_hardness { 80 };
float m_exposure = 0.2f;
bool m_was_drawing { false };
bool m_has_clicked { false };
Gfx::IntPoint m_last_position;
@ -65,7 +83,11 @@ private:
RefPtr<Gfx::Bitmap> m_brush_reference = nullptr;
Gfx::Color m_ensured_color {};
int m_ensured_hardness = 0;
int m_precomputed_color_values[256];
Gfx::IntRect m_last_draw_rect;
bool m_is_drawing_line { false };
ErrorOr<void> ensure_brush_reference_bitmap(Gfx::Color);
void update_precomputed_color_values();
};
}