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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _BITMAP_H
#define _BITMAP_H
#include <string>
#ifndef BITMAP_NO_OPENGL
#include "nv_dds.h"
#endif // !BITMAP_NO_OPENGL
#include "System/float3.h"
#include "System/Color.h"
struct SDL_Surface;
class CBitmap
{
public:
CBitmap(const unsigned char* data, int xsize, int ysize, int channels = 4);
CBitmap();
CBitmap(const CBitmap& old);
CBitmap& operator=(const CBitmap& bm);
CBitmap(CBitmap&& bm);
CBitmap& operator=(CBitmap&& bm);
virtual ~CBitmap();
void Alloc(int w, int h, int c);
void Alloc(int w, int h);
void AllocDummy(const SColor fill = SColor(255,0,0,255));
/// Load data from a file on the VFS
bool Load(std::string const& filename, unsigned char defaultAlpha = 255);
/// Load data from a gray-scale file on the VFS
bool LoadGrayscale(std::string const& filename);
bool Save(std::string const& filename, bool opaque = true) const;
const unsigned int CreateTexture(bool mipmaps = false) const;
const unsigned int CreateDDSTexture(unsigned int texID = 0, bool mipmaps = false) const;
void CreateAlpha(unsigned char red, unsigned char green, unsigned char blue);
void SetTransparent(const SColor& c, const SColor trans = SColor(0,0,0,0));
void Renormalize(float3 newCol);
void Blur(int iterations = 1, float weight = 1.0f);
void CopySubImage(const CBitmap& src, int x, int y);
/**
* Allocates a new SDL_Surface, and feeds it with the data of this bitmap.
* @param newPixelData
* if false, the returned struct will have a pointer
* to the internal pixel data (mem), which means it is only valid
* as long as mem is not freed, which should only happen
* when the this bitmap is deleted.
* If true, an array is allocated with new, and has to be deleted
* after SDL_FreeSurface() is called.
* Note:
* - You have to free the surface with SDL_FreeSurface(surface)
* if you do not need it anymore!
*/
SDL_Surface* CreateSDLSurface(bool newPixelData = false) const;
unsigned char* mem;
int xsize;
int ysize;
int channels;
bool compressed;
#ifndef BITMAP_NO_OPENGL
int textype; //! GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, ...
nv_dds::CDDSImage* ddsimage;
#endif // !BITMAP_NO_OPENGL
public:
CBitmap CanvasResize(const int newx, const int newy, const bool center = true) const;
CBitmap CreateRescaled(int newx, int newy) const;
void ReverseYAxis();
void InvertColors();
void InvertAlpha();
void GrayScale();
void Tint(const float tint[3]);
};
#endif // _BITMAP_H
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