e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2021 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_GRADIENT_HPP
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#define MAPNIK_GRADIENT_HPP
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#include <mapnik/warning.hpp>
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MAPNIK_DISABLE_WARNING_PUSH
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#include <mapnik/warning_ignore_agg.hpp>
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#include <agg_trans_affine.h>
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MAPNIK_DISABLE_WARNING_POP
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// mapnik
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#include <mapnik/color.hpp>
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// stl
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#include <vector>
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namespace mapnik {
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using stop_pair = std::pair<double, mapnik::color>;
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using stop_array = std::vector<stop_pair>;
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enum gradient_e { NO_GRADIENT, LINEAR, RADIAL };
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enum gradient_unit_e {
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USER_SPACE_ON_USE,
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USER_SPACE_ON_USE_BOUNDING_BOX, // used to indicate % age values were specified. This are % of the svg image extent.
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OBJECT_BOUNDING_BOX // (i.e., the abstract coordinate system where (0,0) is at the top/left of the object bounding
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// box and (1,1) is at the bottom/right of the object bounding box)
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};
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class MAPNIK_DECL gradient
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{
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// transform
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agg::trans_affine transform_;
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// control points for the gradient, x1/y1 is the start point, x2/y2 the stop point.
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double x1_;
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double y1_;
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double x2_;
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double y2_;
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// for radial gradients r specifies the radius of the stop circle centered on x2/y2
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double r_;
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stop_array stops_;
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// units for the coordinates
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gradient_unit_e units_;
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gradient_e gradient_type_;
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public:
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gradient();
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gradient(gradient const& other);
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gradient(gradient&& other);
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gradient& operator=(gradient rhs);
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bool operator==(gradient const& other) const;
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void set_gradient_type(gradient_e grad);
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gradient_e get_gradient_type() const;
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void set_transform(agg::trans_affine const& transform);
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agg::trans_affine const& get_transform() const;
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void set_units(gradient_unit_e units);
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gradient_unit_e get_units() const;
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void add_stop(double offset, color const& c);
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bool has_stop() const;
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stop_array const& get_stop_array() const;
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void set_control_points(double x1, double y1, double x2, double y2, double r = 0);
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void get_control_points(double& x1, double& y1, double& x2, double& y2, double& r) const;
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void get_control_points(double& x1, double& y1, double& x2, double& y2) const;
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private:
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void swap(gradient& other) noexcept;
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};
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} // namespace mapnik
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#endif // MAPNIK_GRADIENT_HPP
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