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/*
* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGfx/Painter.h>
#include <LibGfx/Path.h>
#include <LibGfx/Quad.h>
namespace Gfx {
class AntiAliasingPainter {
public:
explicit AntiAliasingPainter(Painter& painter)
: m_underlying_painter(painter)
{
}
enum class LineLengthMode {
// E.g. A line from 0,1 -> 2,1 is 3px long
PointToPoint,
// E.g. A line from 0,1 -> 2,1 is 2px long
Distance
};
void draw_line(IntPoint, IntPoint, Color, float thickness = 1, Painter::LineStyle style = Painter::LineStyle::Solid, Color alternate_color = Color::Transparent, LineLengthMode line_length_mode = LineLengthMode::PointToPoint);
void draw_line(FloatPoint, FloatPoint, Color, float thickness = 1, Painter::LineStyle style = Painter::LineStyle::Solid, Color alternate_color = Color::Transparent, LineLengthMode line_length_mode = LineLengthMode::PointToPoint);
void draw_line_for_path(FloatPoint, FloatPoint, Color, float thickness = 1, Painter::LineStyle style = Painter::LineStyle::Solid, Color alternate_color = Color::Transparent, LineLengthMode line_length_mode = LineLengthMode::PointToPoint);
void draw_line_for_fill_path(FloatPoint from, FloatPoint to, Color color, float thickness = 1)
{
draw_line_for_path(from, to, color, thickness, Painter::LineStyle::Solid, Color {}, LineLengthMode::Distance);
}
void fill_path(Path&, Color, Painter::WindingRule rule = Painter::WindingRule::Nonzero);
void stroke_path(Path const&, Color, float thickness);
void draw_quadratic_bezier_curve(FloatPoint control_point, FloatPoint, FloatPoint, Color, float thickness = 1, Painter::LineStyle style = Painter::LineStyle::Solid);
void draw_cubic_bezier_curve(FloatPoint control_point_0, FloatPoint control_point_1, FloatPoint, FloatPoint, Color, float thickness = 1, Painter::LineStyle style = Painter::LineStyle::Solid);
void draw_elliptical_arc(FloatPoint p1, FloatPoint p2, FloatPoint center, FloatPoint radii, float x_axis_rotation, float theta_1, float theta_delta, Color, float thickness = 1, Painter::LineStyle style = Painter::LineStyle::Solid);
void translate(float dx, float dy) { m_transform.translate(dx, dy); }
void translate(FloatPoint delta) { m_transform.translate(delta); }
void draw_ellipse(IntRect const& a_rect, Color, int thickness);
enum class BlendMode {
Normal,
AlphaSubtract
};
void fill_rect(FloatRect const&, Color);
void fill_circle(IntPoint center, int radius, Color, BlendMode blend_mode = BlendMode::Normal);
void fill_ellipse(IntRect const& a_rect, Color, BlendMode blend_mode = BlendMode::Normal);
void fill_rect_with_rounded_corners(IntRect const&, Color, int radius);
void fill_rect_with_rounded_corners(IntRect const&, Color, int top_left_radius, int top_right_radius, int bottom_right_radius, int bottom_left_radius);
struct CornerRadius {
int horizontal_radius;
int vertical_radius;
inline operator bool() const
{
return horizontal_radius > 0 && vertical_radius > 0;
}
Gfx::IntRect as_rect() const
{
return { 0, 0, horizontal_radius, vertical_radius };
}
};
void fill_rect_with_rounded_corners(IntRect const&, Color, CornerRadius top_left, CornerRadius top_right, CornerRadius bottom_right, CornerRadius bottom_left, BlendMode blend_mode = BlendMode::Normal);
private:
struct Range {
int min;
int max;
inline bool contains_inclusive(int n) const
{
return n >= min && n <= max;
}
};
Range draw_ellipse_part(IntPoint a_rect, int radius_a, int radius_b, Color, bool flip_x_and_y, Optional<Range> x_clip, BlendMode blend_mode);
void draw_dotted_line(IntPoint, IntPoint, Gfx::Color, int thickness);
enum class FixmeEnableHacksForBetterPathPainting {
Yes,
No,
};
template<FixmeEnableHacksForBetterPathPainting path_hacks>
void draw_anti_aliased_line(FloatPoint, FloatPoint, Color, float thickness, Painter::LineStyle style, Color alternate_color, LineLengthMode line_length_mode = LineLengthMode::PointToPoint);
void stroke_segment_intersection(FloatPoint current_line_a, FloatPoint current_line_b, FloatLine const& previous_line, Color, float thickness);
Painter& m_underlying_painter;
AffineTransform m_transform;
};
}
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