Mercurial > fife-parpg

comparison engine/core/video/fonts/subimagefont.cpp @ 0:4a0efb7baf70

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* 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
parents
children 90005975cdbb
comparison
equal deleted inserted replaced
-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 <string>
24
25 // Platform specific includes
26 #include "util/base/fife_stdint.h"
27
28 // 3rd party library includes
29 #include <SDL.h>
30
31 // FIFE includes
32 // These includes are split up in two parts, separated by one empty line
33 // First block: files included from the FIFE root src directory
34 // Second block: files included from the same folder
35 #include "util/base/exception.h"
36 #include "util/log/logger.h"
37 #include "util/structures/rect.h"
38 #include "video/image.h"
39 #include "video/renderbackend.h"
40 #include "video/imagepool.h"
41
42 #include "subimagefont.h"
43
44 namespace FIFE {
45 static Logger _log(LM_GUI);
46
47 SubImageFont::SubImageFont(const std::string& filename, const std::string& glyphs, ImagePool& pool)
48 : ImageFontBase(), m_pool(pool) {
49
50 FL_LOG(_log, LMsg("guichan_image_font, loading ") << filename << " glyphs " << glyphs);
51
52 int image_id = m_pool.addResourceFromFile(filename);
53 Image& img = dynamic_cast<Image&>(m_pool.get(image_id));
54 SDL_Surface* surface = img.getSurface();
55
56 if( !surface ) {
57 throw CannotOpenFile(filename);
58 }
59
60 // Make sure we get 32bit RGB
61 // and copy the Pixelbuffers surface
62 SDL_Surface *tmp = SDL_CreateRGBSurface(SDL_SWSURFACE,
63 surface->w,surface->h,32,
64 RMASK, GMASK, BMASK ,NULLMASK);
65
66 SDL_BlitSurface(surface,0,tmp,0);
67 surface = tmp;
68
69 // Prepare the data for extracting the glyphs.
70 uint32_t *pixels = reinterpret_cast<uint32_t*>(surface->pixels);
71
72 int x, w;
73 x = 0; w=0;
74
75 SDL_Rect src;
76
77 src.h = surface->h;
78 src.y = 0;
79
80 uint32_t separator = pixels[0];
81 while(x < surface->w && pixels[x] == separator)
82 ++x;
83 uint32_t colorkey = pixels[x];
84
85 FL_DBG(_log, LMsg("image_font")
86 << " glyph separator is "
87 << pprint(reinterpret_cast<void*>(separator))
88 << " transparent color is "
89 << pprint(reinterpret_cast<void*>(colorkey)));
90
91 // Disable alpha blending, so that we use colorkeying
92 SDL_SetAlpha(surface,0,255);
93 SDL_SetColorKey(surface,SDL_SRCCOLORKEY,colorkey);
94
95 // Finally extract all glyphs
96 for(size_t i=0; i != glyphs.size(); ++i) {
97 w=0;
98 while(x < surface->w && pixels[x] == separator)
99 ++x;
100 if( x == surface->w )
101 break;
102
103 while(x + w < surface->w && pixels[x + w] != separator)
104 ++w;
105
106 src.x = x;
107 src.w = w;
108
109 tmp = SDL_CreateRGBSurface(SDL_SWSURFACE,
110 w,surface->h,32,
111 RMASK, GMASK, BMASK ,NULLMASK);
112
113 SDL_FillRect(tmp,0,colorkey);
114 SDL_BlitSurface(surface,&src,tmp,0);
115
116 // Disable alpha blending, so that we use colorkeying
117 SDL_SetAlpha(tmp,0,255);
118 SDL_SetColorKey(tmp,SDL_SRCCOLORKEY,colorkey);
119
120
121 m_glyphs[ glyphs[i] ].surface = tmp;
122
123 x += w;
124 }
125
126 // Set placeholder glyph
127 if( m_glyphs.find('?') != m_glyphs.end() ) {
128 m_placeholder = m_glyphs['?'];
129 } else {
130 m_placeholder.surface = 0;
131 }
132
133 mHeight = surface->h;
134 SDL_FreeSurface(surface);
135 }
136
137
138 }
139