resource.h

/*
 * Copyright (C) 2018 Microchip Technology Inc.  All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef EGT_RESOURCE_H
#define EGT_RESOURCE_H
 
#include <cairo.h>
#include <cstdint>
#include <egt/detail/meta.h>
#include <map>
#include <string>
#include <vector>
 
namespace egt
{
inline namespace v1
{
 
class EGT_API ResourceManager
{
public:
 
    static ResourceManager& instance();
 
    bool exists(const char* name) const;
 
    void add(const char* name, const unsigned char* data, size_t len);
 
    void add(const char* name, const std::vector<unsigned char>& data);
 
    void remove(const char* name);
 
    void clear();
 
    void clear(const char* name);
 
    size_t size(const char* name);
 
    const unsigned char* data(const char* name);
 
    bool read(const char* name, unsigned char* data,
              size_t length, size_t offset = 0);
 
    using ItemArray = std::vector<std::string>;
 
    EGT_NODISCARD ItemArray list() const;
 
    void stream_reset(const char* name);
 
    bool stream_read(const char* name, unsigned char* data, size_t length);
 
private:
 
    ResourceManager();
 
    struct ResourceItem;
 
    using ResourceMap = std::map<std::string, ResourceItem>;
 
    ResourceMap m_resources;
};
 
namespace detail
{
cairo_status_t EGT_API read_resource_stream(void* closure, unsigned char* data,
        unsigned int length);
}
 
}
}
 
#endif