svg-renderer.h

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// SPDX-License-Identifier: GPL-2.0-or-later
 
#ifndef SEEN_SVG_RENDERER_H
#define SEEN_SVG_RENDERER_H
 
#include <cstdint>
#include <memory>
#include <optional>
#include <cairomm/refptr.h>
#include <cairomm/surface.h>
#include <glibmm/refptr.h>
 
#include "colors/color.h"
 
class SPDocument;
class SPRoot;
 
namespace Cairo {
class Surface;
} // namespace Cairo
 
namespace Glib {
class ustring;
} // namespace Glib
 
namespace Gdk {
class Pixbuf;
} // namespace Gdk
 
namespace Inkscape {
 
class Pixbuf;
 
class svg_renderer
{
public:
    // load SVG document from file (abs path)
    explicit svg_renderer(char const *path);
 
    // pass in document to render
    explicit svg_renderer(SPDocument &document);
 
    ~svg_renderer();
 
    // set inline style on selected elements; return number of elements modified
    size_t set_style(const Glib::ustring& selector, const char* name, const Glib::ustring& value);
 
    // render document at given scale
    Glib::RefPtr<Gdk::Pixbuf> render(double scale);
    Cairo::RefPtr<Cairo::ImageSurface> render_surface(double scale);
 
    // if set, draw checkerboard pattern before image
    void set_checkerboard_color(uint32_t rgba) { _checkerboard = rgba; }
 
    // set requested scale, by default it is 1.0
    void set_scale(double scale);
 
    // get document size
    double get_width_px() const;
    double get_height_px() const;
 
private:
    Pixbuf *do_render(double device_scale);
 
    std::unique_ptr<SPDocument> const _optional_storage;
    SPDocument &_document;
    SPRoot &_root;
 
    std::optional<uint32_t> _checkerboard;
    double _scale = 1.0;
};
 
} // namespace Inkscape
 
#endif // SEEN_SVG_RENDERER_H
 
/*
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  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
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  End:
*/
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