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/*
* Copyright (c) 2020 - 2024 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _TVG_LOAD_MODULE_H_
#define _TVG_LOAD_MODULE_H_
#include "tvgRender.h"
#include "tvgInlist.h"
struct LoadModule
{
INLIST_ITEM(LoadModule);
//Use either hashkey(data) or hashpath(path)
union {
uintptr_t hashkey;
char* hashpath = nullptr;
};
FileType type; //current loader file type
uint16_t sharing = 0; //reference count
bool readied = false; //read done already.
bool pathcache = false; //cached by path
LoadModule(FileType type) : type(type) {}
virtual ~LoadModule()
{
if (pathcache) free(hashpath);
}
virtual bool open(const string& path) { return false; }
virtual bool open(const char* data, uint32_t size, bool copy) { return false; }
virtual bool resize(Paint* paint, float w, float h) { return false; }
virtual void sync() {}; //finish immediately if any async update jobs.
virtual bool read()
{
if (readied) return false;
readied = true;
return true;
}
bool cached()
{
if (hashkey) return true;
return false;
}
virtual bool close()
{
if (sharing == 0) return true;
--sharing;
return false;
}
};
struct ImageLoader : LoadModule
{
static ColorSpace cs; //desired value
float w = 0, h = 0; //default image size
Surface surface;
ImageLoader(FileType type) : LoadModule(type) {}
virtual bool animatable() { return false; } //true if this loader supports animation.
virtual Paint* paint() { return nullptr; }
virtual Surface* bitmap()
{
if (surface.data) return &surface;
return nullptr;
}
};
struct FontLoader : LoadModule
{
float scale = 1.0f;
FontLoader(FileType type) : LoadModule(type) {}
virtual bool request(Shape* shape, char* text, bool italic = false) = 0;
};
#endif //_TVG_LOAD_MODULE_H_
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