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#pragma once
#include "StringView.hpp"
#include "Vec2.hpp"
#include "Color.hpp"
#include "Clock.hpp"
#include <boost/filesystem/path.hpp>
#include <stdexcept>
extern "C"
{
#include <libnsgif.h>
}
namespace dchat
{
class GifLoadException : public std::runtime_error
{
public:
GifLoadException(const std::string &errMsg) : std::runtime_error(errMsg) {}
};
// Gif is in image format ARGB (32-bits in total)
class Gif
{
public:
// Throws GifLoadException on error
Gif(const boost::filesystem::path &filepath);
Gif(StringView fileContent);
virtual ~Gif();
Vec2u getSize() const;
// Throws GifLoadException on error
void update();
static bool isDataGif(const StringView &data);
protected:
// Return false if texture creation failed
virtual bool createTexture(int width, int height) = 0;
// Size of texture data is same as the size that the texture was created with (also same size returned by @getSize function)
virtual void updateTexture(void *textureData) = 0;
private:
void init();
private:
gif_animation gif;
StringView fileContent;
unsigned int currentFrame;
double timeElapsedCs;
Clock frameTimer;
bool created;
};
}
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