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// * This file is part of the COLOBOT source code
// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
// *
// * This program is free software: you can redistribute it and/or modify
// * it under the terms of the GNU General Public License as published by
// * the Free Software Foundation, either version 3 of the License, or
// * (at your option) any later version.
// *
// * This program is distributed in the hope that it will be useful,
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// * GNU General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program. If not, see http://www.gnu.org/licenses/.
// image.h
#pragma once
#include <stddef.h>
#include <string>
// Forward declaration without including headers to clutter the code
struct SDL_Surface;
//! Implementation-specific image data
/** Note that the struct has no destructor and the surface
will not be freed at destruction. */
struct ImageData
{
//! SDL surface with image data
SDL_Surface* surface;
ImageData() { surface = NULL; }
};
/**
\class CImage
\brief Image loaded from file
Wrapper around SDL_Image library to load images. Also contains
function for saving images to PNG.
*/
class CImage
{
private:
//! Blocked!
CImage(const CImage &other) {}
//! Blocked!
void operator=(const CImage &other) {}
public:
//! Constructs empty image (with NULL data)
CImage();
//! Destroys image, calling Free()
virtual ~CImage();
//! Frees the allocated image data
void Free();
//! Returns whether the image is empty (has NULL data)
bool IsEmpty();
//! Returns the image data; if empty - returns NULL
ImageData* GetData();
//! Loads an image from the specified file
bool Load(const std::string &fileName);
//! Saves the image to the specified file in PNG format
bool SavePNG(const std::string &fileName);
//! Returns the last error
std::string GetError();
private:
//! Last encountered error
std::string m_error;
//! Image data
ImageData* m_data;
};
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