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ImageManager.cpp
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ImageManager.cpp
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/*
* Copyright (C) 2012 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow 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.
*
* Me and My Shadow 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 Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ImageManager.h"
#include <stdio.h>
#include <SDL_image.h>
SDL_Surface* ImageManager::loadImage(const std::string &file){
SDL_Surface* opt=NULL;
//First check if the image isn't already in the imageCollection.
opt=imageCollection[file];
if(opt!=NULL)
return opt;
//Now load the image to load.
opt=IMG_Load(file.c_str());
//Check if loading didn't fail.
if(opt!=NULL){
//Check if there's an alpha mask.
if(!opt->format->Amask){
//We use cyan for alpha, so set the alpha color key.
SDL_SetColorKey(opt,SDL_TRUE,SDL_MapRGB(opt->format,0,0xFF,0xFF));
}
}else{
//We couldn't load the image.
fprintf(stderr,"ERROR: Can't open image file %s.\n Error:%s\n",file.c_str(),IMG_GetError());
return NULL;
}
//Add a pointer to the imageCollection.
imageCollection[file]=opt;
//And return the SDL_Surface*.
return opt;
}
SharedTexture ImageManager::loadTexture(const std::string &file, SDL_Renderer& renderer) {
//First check if the image isn't already in the textureCollection.
SharedTexture opt=textureCollection[file];
if(opt.get()) {
return opt;
}
//Now try to load the image into a texture.
opt=SharedTexture(IMG_LoadTexture(&renderer, file.c_str()), SDL_DestroyTexture);
if(opt.get()) {
//Add a pointer to the textureCollection.
textureCollection[file]=opt;
return opt;
} else {
fprintf(stderr,"ERROR: Can't open image file %s.\n Error:%s\n",file.c_str(),IMG_GetError());
return opt;
}
}
ImageManager::~ImageManager(){
//We call destroy().
destroy();
}
void ImageManager::destroy(){
{
//Loop through the imageCollection and free them.
std::map<std::string,SDL_Surface*>::iterator i;
for(i=imageCollection.begin();i!=imageCollection.end();++i){
SDL_FreeSurface(i->second);
}
imageCollection.clear();
}
{
textureCollection.clear();
}
}

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