/**
* Recreates the surface with a new size.
* Old contents will not be altered, and may be
* cropped to fit the new size.
* @param width Width in pixels.
* @param height Height in pixels.
*/
void Surface::resize(int width, int height)
{
// Set up new surface
Uint8 bpp = _surface->format->BitsPerPixel;
int pitch = GetPitch(bpp, width);
void *alignedBuffer = NewAligned(bpp, width, height);
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(alignedBuffer, width, height, bpp, pitch, 0, 0, 0, 0);
if (surface == 0)
{
throw Exception(SDL_GetError());
}
// Copy old contents
SDL_SetColorKey(surface, SDL_SRCCOLORKEY, 0);
SDL_SetColors(surface, getPalette(), 0, 255);
SDL_BlitSurface(_surface, 0, surface, 0);
// Delete old surface
DeleteAligned(_alignedBuffer);
SDL_FreeSurface(_surface);
_alignedBuffer = alignedBuffer;
_surface = surface;
_clear.w = getWidth();
_clear.h = getHeight();
}
/**
* Loads the contents of an image file of a
* known format into the surface.
* @param filename Filename of the image.
*/
void Surface::loadImage(const std::string &filename)
{
// Destroy current surface (will be replaced)
DeleteAligned(_alignedBuffer);
SDL_FreeSurface(_surface);
_alignedBuffer = 0;
_surface = 0;
// SDL only takes UTF-8 filenames
// so here's an ugly hack to match this ugly reasoning
std::string utf8 = Language::wstrToUtf8(Language::fsToWstr(filename));
// Load file
_surface = IMG_Load(utf8.c_str());
if (!_surface)
{
std::string err = filename + ":" + IMG_GetError();
throw Exception(err);
}
}
/**
* Deletes the surface from memory.
*/
Surface::~Surface()
{
DeleteAligned(_alignedBuffer);
SDL_FreeSurface(_surface);
}
