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#pragma once
#include "Geometry.h"
#include "cru/common/Format.h"
#include <utility>
namespace cru::platform::graphics {
/**
* \remarks This class is a helper mixin for some platforms, especially web
* canvas. It constructs a svg data by recording commands. Use GetPathData to
* get svg path data and use it to build real geometry.
*/
class CRU_PLATFORM_GRAPHICS_API SvgGeometryBuilderMixin
: public virtual IGeometryBuilder {
public:
SvgGeometryBuilderMixin();
~SvgGeometryBuilderMixin() override;
Point GetCurrentPosition() override;
void MoveTo(const Point& point) override;
void RelativeMoveTo(const Point& offset) override;
void LineTo(const Point& point) override;
void RelativeLineTo(const Point& offset) override;
void CubicBezierTo(const Point& start_control_point,
const Point& end_control_point,
const Point& end_point) override;
void RelativeCubicBezierTo(const Point& start_control_offset,
const Point& end_control_offset,
const Point& end_offset) override;
void QuadraticBezierTo(const Point& control_point,
const Point& end_point) override;
void RelativeQuadraticBezierTo(const Point& control_offset,
const Point& end_offset) override;
void ArcTo(const Point& radius, float angle, bool is_large_arc,
bool is_clockwise, const Point& end_point) override;
void RelativeArcTo(const Point& radius, float angle, bool is_large_arc,
bool is_clockwise, const Point& end_offset) override;
void CloseFigure(bool close) override;
void ParseAndApplySvgPathData(StringView path_d) override;
protected:
String GetPathData() const { return current_; }
private:
template <typename... Args>
void Append(StringView format, Args&&... args) {
current_ += Format(format, std::forward<Args>(args)...);
current_ += u' ';
}
void AppendCommand(StringView command);
void Append(bool flag);
void Append(float number);
void Append(const Point& point);
private:
String current_;
};
} // namespace cru::platform::graphics
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