optglarea.h

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// SPDX-License-Identifier: GPL-2.0-or-later
 
#ifndef INKSCAPE_UI_WIDGET_OPTGLAREA_H
#define INKSCAPE_UI_WIDGET_OPTGLAREA_H
 
#include <epoxy/gl.h>
#include <glibmm/refptr.h>
#include <gtkmm/drawingarea.h>
 
namespace Cairo { class Context; }
namespace Gdk { class GLContext; }
 
namespace Inkscape::UI::Widget {
 
class OptGLArea : public Gtk::Widget
{
public:
    OptGLArea();
    ~OptGLArea() override;
 
    void set_opengl_enabled(bool);
    bool get_opengl_enabled() const { return opengl_enabled; }
 
    void make_current();
 
    void bind_framebuffer() const;
 
    void snapshot_vfunc(Glib::RefPtr<Gtk::Snapshot> const &snapshot) override;
 
protected:
    void on_realize() override;
    void on_unrealize() override;
 
    virtual Glib::RefPtr<Gdk::GLContext> create_context() = 0;
 
    virtual void paint_widget(Cairo::RefPtr<Cairo::Context> const &) {}
 
private:
    bool opengl_enabled = false;
 
    struct GLState;
    std::shared_ptr<GLState> gl;
 
    void init_opengl();
    void uninit_opengl();
};
 
} // namespace Inkscape::UI::Widget
 
#endif // INKSCAPE_UI_WIDGET_OPTGLAREA_H
 
/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim:filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99: