CairoRenderer.hpp

/*
 * Copyright (C) Tobias Löw (tobi.loew@protonmail.ch)
 *
 * This file is part of Scatter
 *
 * Scatter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Scatter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Scatter.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <cairomm/context.h>
#include <cairomm/surface.h>
#include <pangomm/fontdescription.h>
 
#include <scatter/render/Renderer.hpp>
#include <string>
 
namespace scatter
{
    class Point;
 
    class CairoRenderer : public Renderer
    {
      public:
        CairoRenderer(const std::string &filename, const double &width, const double &height);
 
        virtual ~CairoRenderer();
 
        void restrictArea(const Point &p1, const Point &p2);
 
        void area(const std::vector<Point> &points, const Colour &colour = Colour());
 
        void circle(const Point &p, const double &radius, const Colour &colour = Colour(), bool fill = true);
 
        void line(const Point &p1, const Point &p2, const Colour &colour = Colour(), const double &line_width = 0.1);
 
        void rectangle(const Point &p1, const Point &p2, const Colour &colour = Colour(), bool fill = true);
 
        void ellipse(const Point &p, const double &minor, const double &major, const double &rotation, const Colour &colour = Colour(),
                     bool fill = true);
 
        void asterisk(const Point &p, const double &radius, const Colour &colour = Colour());
 
        void cross(const Point &p, const double &radius, const Colour &colour = Colour());
 
        void plus(const Point &p, const double &radius, const Colour &colour = Colour());
 
        void triangle(const Point &p, const double &radius, const Colour &colour = Colour(), bool fill = true);
 
        void diamond(const Point &p, const double &radius, const Colour &colour = Colour(), bool fill = true);
 
        void square(const Point &p, const double &radius, const Colour &colour = Colour(), bool fill = true);
 
        void star(const Point &p, const double &radius, const Colour &colour = Colour(), bool fill = true);
 
        void arrow(const Point &p1, const Point &p2, const Point &p3, const Point &p4, const Colour &colour = Colour());
 
        void text(const Point &p, const std::string &label, const TextOptions &options = TextOptions());
 
        void text(const Point &p, const std::string &label, const Anchor &anchor);
 
        double getCharWidth(const TextOptions &options);
 
      protected:
        Pango::FontDescription makeFont(const TextOptions &options);
 
        void draw(const std::function<void()> &drawing_function, const Colour &colour, bool fill, const double &line_width = 0.1);
 
      private:
        Cairo::RefPtr<Cairo::Surface> surface_;
        Cairo::RefPtr<Cairo::Context> context_;
    };
 
}  // namespace scatter