86 lines
3 KiB
C++
86 lines
3 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2015 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef MAPNIK_IMAGE_VIEW_HPP
|
|
#define MAPNIK_IMAGE_VIEW_HPP
|
|
|
|
#include <mapnik/image.hpp>
|
|
|
|
namespace mapnik {
|
|
|
|
template <typename T>
|
|
class image_view
|
|
{
|
|
public:
|
|
using pixel = typename T::pixel;
|
|
using pixel_type = typename T::pixel_type;
|
|
static constexpr image_dtype dtype = T::dtype;
|
|
static constexpr std::size_t pixel_size = sizeof(pixel_type);
|
|
|
|
image_view(std::size_t x, std::size_t y, std::size_t width, std::size_t height, T const& data);
|
|
~image_view();
|
|
|
|
image_view(image_view<T> const& rhs);
|
|
image_view(image_view<T> && other) noexcept;
|
|
image_view<T>& operator=(image_view<T> rhs) = delete;
|
|
bool operator==(image_view<T> const& rhs) const;
|
|
bool operator<(image_view<T> const& rhs) const;
|
|
|
|
std::size_t x() const;
|
|
std::size_t y() const;
|
|
std::size_t width() const;
|
|
std::size_t height() const;
|
|
pixel_type const& operator() (std::size_t i, std::size_t j) const;
|
|
std::size_t size() const;
|
|
std::size_t row_size() const;
|
|
pixel_type const* get_row(std::size_t row) const;
|
|
pixel_type const* get_row(std::size_t row, std::size_t x0) const;
|
|
T const& data() const;
|
|
bool get_premultiplied() const;
|
|
double get_offset() const;
|
|
double get_scaling() const;
|
|
image_dtype get_dtype() const;
|
|
|
|
private:
|
|
std::size_t x_;
|
|
std::size_t y_;
|
|
std::size_t width_;
|
|
std::size_t height_;
|
|
T const& data_;
|
|
};
|
|
|
|
using image_view_null = image_view<image_null>;
|
|
using image_view_rgba8 = image_view<image_rgba8>;
|
|
using image_view_gray8 = image_view<image_gray8>;
|
|
using image_view_gray8s = image_view<image_gray8s>;
|
|
using image_view_gray16 = image_view<image_gray16>;
|
|
using image_view_gray16s = image_view<image_gray16s>;
|
|
using image_view_gray32 = image_view<image_gray32>;
|
|
using image_view_gray32s = image_view<image_gray32s>;
|
|
using image_view_gray32f = image_view<image_gray32f>;
|
|
using image_view_gray64 = image_view<image_gray64>;
|
|
using image_view_gray64s = image_view<image_gray64s>;
|
|
using image_view_gray64f = image_view<image_gray64f>;
|
|
|
|
} // end ns
|
|
|
|
#endif // MAPNIK_IMAGE_VIEW_HPP
|