dl_image.h

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#pragma once
 
#include <string>
 
#include "base/dl_vector2.h"
#include "dl_type.h"
#include "base/dl_range_any.h"
#include "memory/dl_buffer.h"
 
namespace dl
{
 
using Image = Vector2<uint32_t, unsigned>;
 

namespace Img
{
inline bool IsSupportFormat(std::string_view str, bool read)
{
    constexpr std::array<std::string_view, 9> ARRAY_READ = {
        "jpg", "jpeg", "png", "tga", "bmp", "psd", "gif", "hdr", "pic"
    };
    constexpr std::array<std::string_view, 3> ARRAY_WRITE = {
        "png", "tag", "bmp"
    };
    return read ? Any::Equal(ARRAY_READ, str) : Any::Equal(ARRAY_WRITE, str);
}
 
// 不读取psd
constexpr std::string_view REGEX_FORMAT = ".(jpg|jpeg|png|tag|bmp|gif|hdr|pic)$";
 
 

Image* Create(const Size& size, const Color& col);
Image* Create(std::string_view path_name);
 

Image* CreateSvg(std::string_view path_name, const Size& size);

Image* CreateWebp(std::string_view path_name);
 
 
Image* CreateWebp(BufferView buf);

bool Save(const Image* img, std::string_view path_name);

bool SaveKtx(std::span<Image*> vec_img, std::string_view path_name);
inline bool SaveKtx(Image* img, std::string_view path_name)
{
    std::array<Image*, 1> arr = { img };
    return SaveKtx(arr, path_name);
}

void CalcLeastRect(const Image* img, RectU& rect);
 

bool IsHaveTranslucent(const Image* img, const RectU& rect);

void AddRect(Image* img_tar, const Image* img_src, const RectU& rect, const PointU& tar_xy);

void SetAlphaZero(Image* img);
void SetAlphaZero(Image* img, uint8_t a, uint32_t col_new = 0);
 

Image* Resize(const Image* img, const Size& size);
 
Image* Resize(const Image* img, Float scale);
 
enum class ExtendMode
{
    ZERO, // 填充0
    COPY, // 复制边缘颜色
};

Image* Extend(const Image* img, unsigned i, ExtendMode mode = ExtendMode::ZERO);

void BuildBorder(Image* img, unsigned i);

void CvtEffect2Normal(Image* img);
 
}
 
}