mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-10-19 23:53:20 +00:00
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
|
||
|
|
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <AK/String.h>
|
||
|
|
#include <AK/Vector.h>
|
||
|
|
|
||
|
|
namespace Web::SVG {
|
||
|
|
|
||
|
|
enum class PathInstructionType {
|
||
|
|
Move,
|
||
|
|
ClosePath,
|
||
|
|
Line,
|
||
|
|
HorizontalLine,
|
||
|
|
VerticalLine,
|
||
|
|
Curve,
|
||
|
|
SmoothCurve,
|
||
|
|
QuadraticBezierCurve,
|
||
|
|
SmoothQuadraticBezierCurve,
|
||
|
|
EllipticalArc,
|
||
|
|
Invalid,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct PathInstruction {
|
||
|
|
PathInstructionType type;
|
||
|
|
bool absolute;
|
||
|
|
Vector<float> data;
|
||
|
|
};
|
||
|
|
|
||
|
|
class AttributeParser final {
|
||
|
|
public:
|
||
|
|
AttributeParser(String source);
|
||
|
|
~AttributeParser() = default;
|
||
|
|
|
||
|
|
Vector<PathInstruction> parse_path_data();
|
||
|
|
|
||
|
|
private:
|
||
|
|
void parse_drawto();
|
||
|
|
|
||
|
|
void parse_moveto();
|
||
|
|
void parse_closepath();
|
||
|
|
void parse_lineto();
|
||
|
|
void parse_horizontal_lineto();
|
||
|
|
void parse_vertical_lineto();
|
||
|
|
void parse_curveto();
|
||
|
|
void parse_smooth_curveto();
|
||
|
|
void parse_quadratic_bezier_curveto();
|
||
|
|
void parse_smooth_quadratic_bezier_curveto();
|
||
|
|
void parse_elliptical_arc();
|
||
|
|
|
||
|
|
float parse_coordinate();
|
||
|
|
Vector<float> parse_coordinate_pair();
|
||
|
|
Vector<float> parse_coordinate_sequence();
|
||
|
|
Vector<Vector<float>> parse_coordinate_pair_sequence();
|
||
|
|
Vector<float> parse_coordinate_pair_double();
|
||
|
|
Vector<float> parse_coordinate_pair_triplet();
|
||
|
|
Vector<float> parse_elliptical_arg_argument();
|
||
|
|
void parse_whitespace(bool must_match_once = false);
|
||
|
|
void parse_comma_whitespace();
|
||
|
|
float parse_fractional_constant();
|
||
|
|
float parse_number();
|
||
|
|
float parse_flag();
|
||
|
|
// -1 if negative, +1 otherwise
|
||
|
|
int parse_sign();
|
||
|
|
|
||
|
|
bool match_whitespace() const;
|
||
|
|
bool match_comma_whitespace() const;
|
||
|
|
bool match_coordinate() const;
|
||
|
|
bool match(char c) const { return !done() && ch() == c; }
|
||
|
|
|
||
|
|
bool done() const { return m_cursor >= m_source.length(); }
|
||
|
|
char ch() const { return m_source[m_cursor]; }
|
||
|
|
char consume() { return m_source[m_cursor++]; }
|
||
|
|
|
||
|
|
String m_source;
|
||
|
|
size_t m_cursor { 0 };
|
||
|
|
Vector<PathInstruction> m_instructions;
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|