322 lines
7.1 KiB
C++
322 lines
7.1 KiB
C++
/*
|
|
* Paint Image Implementation
|
|
* Nana C++ Library(http://www.nanapro.org)
|
|
* Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
|
|
*
|
|
* Distributed under the Boost Software License, Version 1.0.
|
|
* (See accompanying file LICENSE_1_0.txt or copy at
|
|
* http://www.boost.org/LICENSE_1_0.txt)
|
|
*
|
|
* @file: nana/paint/image.cpp
|
|
* @contributors:
|
|
* nabijaczleweli(pr#106)
|
|
*/
|
|
|
|
#include <nana/push_ignore_diagnostic>
|
|
#include "../detail/platform_spec_selector.hpp"
|
|
#include <nana/paint/image.hpp>
|
|
#include <algorithm>
|
|
#include <fstream>
|
|
#include <iterator>
|
|
#include <stdexcept>
|
|
|
|
#include <nana/paint/detail/image_impl_interface.hpp>
|
|
#include <nana/paint/pixel_buffer.hpp>
|
|
#include <nana/filesystem/filesystem_ext.hpp>
|
|
|
|
#if defined(NANA_ENABLE_JPEG)
|
|
#include "detail/image_jpeg.hpp"
|
|
#endif
|
|
|
|
#if defined(NANA_ENABLE_PNG)
|
|
#include "detail/image_png.hpp"
|
|
#endif
|
|
|
|
#include "detail/image_bmp.hpp"
|
|
|
|
#include "image_accessor.hpp"
|
|
#include "detail/image_ico_resource.hpp"
|
|
#include "detail/image_ico.hpp"
|
|
|
|
namespace fs = std::experimental::filesystem;
|
|
|
|
namespace nana
|
|
{
|
|
namespace paint
|
|
{
|
|
#if defined(NANA_WINDOWS)
|
|
HICON image_accessor::icon(const nana::paint::image& img)
|
|
{
|
|
auto ico_res = dynamic_cast<paint::detail::image_ico_resource*>(img.image_ptr_.get());
|
|
if (ico_res)
|
|
return reinterpret_cast<HICON>(ico_res->native_handle());
|
|
|
|
auto ico = dynamic_cast<paint::detail::image_ico*>(img.image_ptr_.get());
|
|
if (ico)
|
|
return reinterpret_cast<HICON>(ico->native_handle());
|
|
|
|
return nullptr;
|
|
}
|
|
#else
|
|
int image_accessor::icon(const image&)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
image::image_impl_interface::~image_impl_interface()
|
|
{}
|
|
|
|
//class image
|
|
image::image() noexcept
|
|
{}
|
|
|
|
image::image(const image& rhs)
|
|
: image_ptr_(rhs.image_ptr_)
|
|
{}
|
|
|
|
image::image(image&& r)
|
|
: image_ptr_(std::move(r.image_ptr_))
|
|
{}
|
|
|
|
image::image(const std::string& file)
|
|
{
|
|
open(file);
|
|
}
|
|
|
|
image::image(const std::wstring& file)
|
|
{
|
|
open(file);
|
|
}
|
|
|
|
image::~image()
|
|
{
|
|
close();
|
|
}
|
|
|
|
image& image::operator=(const image& r)
|
|
{
|
|
if(this != &r)
|
|
image_ptr_ = r.image_ptr_;
|
|
|
|
return * this;
|
|
}
|
|
|
|
image& image::operator=(image&& r)
|
|
{
|
|
if(this != &r)
|
|
image_ptr_ = std::move(r.image_ptr_);
|
|
return *this;
|
|
}
|
|
|
|
std::shared_ptr<image::image_impl_interface> create_image(const fs::path & p)
|
|
{
|
|
std::shared_ptr<image::image_impl_interface> ptr;
|
|
|
|
auto ext = p.extension().native();
|
|
if (ext.empty())
|
|
return ptr;
|
|
|
|
std::transform(ext.begin(), ext.end(), ext.begin(), [](int ch)
|
|
{
|
|
if ('A' <= ch && ch <= 'Z')
|
|
ch -= ('A' - 'a');
|
|
return ch;
|
|
});
|
|
|
|
#if defined(NANA_WINDOWS)
|
|
const wchar_t* ext_ico = L".ico";
|
|
const wchar_t* ext_png = L".png";
|
|
const wchar_t* ext_jpg = L".jpg";
|
|
const wchar_t* ext_jpeg = L".jpeg";
|
|
#else
|
|
const char* ext_ico = ".ico";
|
|
const char* ext_png = ".png";
|
|
const char* ext_jpg = ".jpg";
|
|
const char* ext_jpeg = ".jpeg";
|
|
#endif
|
|
do
|
|
{
|
|
if (ext_ico == ext)
|
|
{
|
|
ptr = std::make_shared<detail::image_ico>();
|
|
break;
|
|
}
|
|
|
|
if (ext_png == ext)
|
|
{
|
|
#if defined(NANA_ENABLE_PNG)
|
|
ptr = std::make_shared<detail::image_png>();
|
|
#else
|
|
return ptr;
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
if (ext_jpg == ext || ext_jpeg == ext)
|
|
{
|
|
#if defined(NANA_ENABLE_JPEG)
|
|
ptr = std::make_shared<detail::image_jpeg>();
|
|
#else
|
|
return ptr;
|
|
#endif
|
|
break;
|
|
}
|
|
} while (false);
|
|
|
|
//Check for BMP
|
|
if (!ptr)
|
|
{
|
|
#ifndef NANA_MINGW
|
|
std::ifstream ifs(p.c_str(), std::ios::binary);
|
|
#else
|
|
std::ifstream ifs(to_osmbstr(to_utf8(p.native())).c_str(), std::ios::binary);
|
|
#endif
|
|
if (ifs)
|
|
{
|
|
unsigned short meta = 0;
|
|
ifs.read(reinterpret_cast<char*>(&meta), 2);
|
|
if (*reinterpret_cast<const short*>("BM") == meta)
|
|
ptr = std::make_shared<detail::image_bmp>();
|
|
else if (*reinterpret_cast<const short*>("MZ") == meta)
|
|
ptr = std::make_shared<detail::image_ico_resource>();
|
|
}
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
bool image::open(const ::std::string& file)
|
|
{
|
|
fs::path path(file);
|
|
image_ptr_ = create_image(path);
|
|
return (image_ptr_ ? image_ptr_->open(path) : false);
|
|
}
|
|
|
|
bool image::open(const std::wstring& file)
|
|
{
|
|
fs::path path(file);
|
|
image_ptr_ = create_image(path);
|
|
return (image_ptr_ ? image_ptr_->open(path) : false);
|
|
}
|
|
|
|
bool image::open(const void* data, std::size_t bytes)
|
|
{
|
|
close();
|
|
|
|
if (bytes > 2)
|
|
{
|
|
std::shared_ptr<image::image_impl_interface> ptr;
|
|
|
|
auto meta = *reinterpret_cast<const unsigned short*>(data);
|
|
|
|
if (*reinterpret_cast<const short*>("BM") == meta)
|
|
ptr = std::make_shared<detail::image_bmp>();
|
|
else if (*reinterpret_cast<const short*>("MZ") == meta)
|
|
ptr = std::make_shared<detail::image_ico_resource>();
|
|
else
|
|
{
|
|
if (bytes > 8 && (0x474e5089 == *reinterpret_cast<const unsigned*>(data)))
|
|
{
|
|
#if defined(NANA_ENABLE_PNG)
|
|
ptr = std::make_shared<detail::image_png>();
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#if defined(NANA_ENABLE_JPEG)
|
|
//JFIF
|
|
if (bytes > 11 && (0xe0ffd8ff == *reinterpret_cast<const unsigned*>(data)) && 0x4649464A == *reinterpret_cast<const unsigned*>(reinterpret_cast<const char*>(data)+6))
|
|
ptr = std::make_shared<detail::image_jpeg>();
|
|
else if (bytes > 9 && (0x66697845 == *reinterpret_cast<const unsigned*>(reinterpret_cast<const char*>(data)+5))) //Exif
|
|
ptr = std::make_shared<detail::image_jpeg>();
|
|
#endif
|
|
if ((!ptr) && (bytes > 40))
|
|
{
|
|
switch (*reinterpret_cast<const unsigned*>(data))
|
|
{
|
|
case 40:
|
|
case 0x00010000:
|
|
if (!ptr && bytes > 40)
|
|
ptr = std::make_shared<detail::image_ico>();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
if (ptr)
|
|
{
|
|
image_ptr_.swap(ptr);
|
|
return image_ptr_->open(data, bytes);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
bool image::empty() const noexcept
|
|
{
|
|
return ((nullptr == image_ptr_) || image_ptr_->empty());
|
|
}
|
|
|
|
image::operator unspecified_bool_t() const
|
|
{
|
|
return (image_ptr_ ? &image::empty : nullptr);
|
|
}
|
|
|
|
//Fixed missing noexcept specifier by nabijaczleweli(pr#106)
|
|
void image::close() noexcept
|
|
{
|
|
image_ptr_.reset();
|
|
}
|
|
|
|
//Fixed missing noexcept specifier by nabijaczleweli(pr#106)
|
|
bool image::alpha() const noexcept
|
|
{
|
|
return (image_ptr_ ? image_ptr_->alpha_channel() : false);
|
|
}
|
|
|
|
//Fixed missing noexcept specifier by nabijaczleweli(pr#106)
|
|
nana::size image::size() const noexcept
|
|
{
|
|
return (image_ptr_ ? image_ptr_->size() : nana::size());
|
|
}
|
|
|
|
void image::paste(graphics& dst, const point& p_dst) const
|
|
{
|
|
this->paste(rectangle{ this->size() }, dst, p_dst);
|
|
}
|
|
|
|
void image::paste(const rectangle& r_src, graphics & dst, const point& p_dst) const
|
|
{
|
|
if (image_ptr_)
|
|
{
|
|
if (dst.empty())
|
|
dst.make({ r_src.width, r_src.height }); //throws if failed to create
|
|
|
|
image_ptr_->paste(r_src, dst, p_dst);
|
|
}
|
|
else
|
|
throw std::runtime_error("image is empty");
|
|
}
|
|
|
|
void image::stretch(const nana::rectangle& r_src, graphics& dst, const nana::rectangle & r_dst) const
|
|
{
|
|
if (image_ptr_)
|
|
{
|
|
if (dst.empty())
|
|
dst.make({ r_src.width, r_src.height }); //throws if failed to create
|
|
|
|
image_ptr_->stretch(r_src, dst, r_dst);
|
|
}
|
|
else
|
|
throw std::runtime_error("image is empty");
|
|
}
|
|
//end class image
|
|
|
|
}//end namespace paint
|
|
}//end namespace nana
|
|
|