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comparison engine/core/loaders/native/video_loaders/subimage_loader.cpp @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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children 90005975cdbb
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-1:000000000000 0:4a0efb7baf70
1 /***************************************************************************
2 * Copyright (C) 2005-2008 by the FIFE team *
3 * http://www.fifengine.de *
4 * This file is part of FIFE. *
5 * *
6 * FIFE is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
20 ***************************************************************************/
21
22 // Standard C++ library includes
23 #include <iostream>
24
25 // 3rd party library includes
26 #include <SDL.h>
27 #include <boost/lexical_cast.hpp>
28
29 // FIFE includes
30 // These includes are split up in two parts, separated by one empty line
31 // First block: files included from the FIFE root src directory
32 // Second block: files included from the same folder
33 #include "video/image.h"
34 #include "video/renderbackend.h"
35 #include "video/image_location.h"
36 #include "util/base/fife_stdint.h"
37 #include "util/resource/resource.h"
38 #include "util/base/exception.h"
39 #include "util/log/logger.h"
40
41 #include "subimage_loader.h"
42
43 namespace FIFE {
44 static Logger _log(LM_NATIVE_LOADERS);
45
46 IResource* SubImageLoader::loadResource(const ResourceLocation& location) {
47 const ImageLocation* loc = dynamic_cast<const ImageLocation*>(&location);
48 if (!loc) {
49 // Wrong location type given for subimage provider
50 return NULL;
51 }
52 Image* r = loc->getParentSource();
53 if (!r) {
54 // No parent source assigned, cannot provide subimage
55 return NULL;
56 }
57 SDL_Surface* src = r->getSurface();
58 if (!src) {
59 return NULL;
60 }
61 SDL_Rect src_rect;
62 src_rect.x = loc->getXShift();
63 src_rect.y = loc->getYShift();
64 src_rect.w = loc->getWidth();
65 src_rect.h = loc->getHeight();
66
67 FL_DBG(_log, LMsg("subimage_loader")
68 << " rect:" << Rect(src_rect.x,src_rect.y,src_rect.w,src_rect.h));
69
70 uint32_t Amask = src->format->Amask ? AMASK : 0;
71 SDL_Surface* result = SDL_CreateRGBSurface(SDL_SWSURFACE, src_rect.w, src_rect.h, 32,
72 RMASK, GMASK, BMASK, Amask);
73 SDL_FillRect(result, NULL, 0);
74 SDL_SetAlpha(src,0,SDL_ALPHA_OPAQUE);
75 SDL_BlitSurface(src,&src_rect,result,0);
76
77 return RenderBackend::instance()->createImage(result);
78 };
79
80 }