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comparison ext/guichan-0.8.1/src/sdl/sdlimage.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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-1:000000000000 0:4a0efb7baf70
1 /* _______ __ __ __ ______ __ __ _______ __ __
2 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
3 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
4 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
5 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
6 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
7 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
8 *
9 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
10 *
11 *
12 * Per Larsson a.k.a finalman
13 * Olof Naessén a.k.a jansem/yakslem
14 *
15 * Visit: http://guichan.sourceforge.net
16 *
17 * License: (BSD)
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in
25 * the documentation and/or other materials provided with the
26 * distribution.
27 * 3. Neither the name of Guichan nor the names of its contributors may
28 * be used to endorse or promote products derived from this software
29 * without specific prior written permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
37 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
38 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43
44 /*
45 * For comments regarding functions please see the header file.
46 */
47
48 #include "guichan/sdl/sdlimage.hpp"
49
50 #include "guichan/exception.hpp"
51 #include "guichan/sdl/sdlpixel.hpp"
52
53 namespace gcn
54 {
55 SDLImage::SDLImage(SDL_Surface* surface, bool autoFree)
56 {
57 mAutoFree = autoFree;
58 mSurface = surface;
59 }
60
61 SDLImage::~SDLImage()
62 {
63 if (mAutoFree)
64 {
65 free();
66 }
67 }
68
69 SDL_Surface* SDLImage::getSurface() const
70 {
71 return mSurface;
72 }
73
74 int SDLImage::getWidth() const
75 {
76 if (mSurface == NULL)
77 {
78 throw GCN_EXCEPTION("Trying to get the width of a non loaded image.");
79 }
80
81 return mSurface->w;
82 }
83
84 int SDLImage::getHeight() const
85 {
86 if (mSurface == NULL)
87 {
88 throw GCN_EXCEPTION("Trying to get the height of a non loaded image.");
89 }
90
91 return mSurface->h;
92 }
93
94 Color SDLImage::getPixel(int x, int y)
95 {
96 if (mSurface == NULL)
97 {
98 throw GCN_EXCEPTION("Trying to get a pixel from a non loaded image.");
99 }
100
101 return SDLgetPixel(mSurface, x, y);
102 }
103
104 void SDLImage::putPixel(int x, int y, const Color& color)
105 {
106 if (mSurface == NULL)
107 {
108 throw GCN_EXCEPTION("Trying to put a pixel in a non loaded image.");
109 }
110
111 SDLputPixel(mSurface, x, y, color);
112 }
113
114 void SDLImage::convertToDisplayFormat()
115 {
116 if (mSurface == NULL)
117 {
118 throw GCN_EXCEPTION("Trying to convert a non loaded image to display format.");
119 }
120
121 int i;
122 bool hasPink = false;
123 bool hasAlpha = false;
124
125 for (i = 0; i < mSurface->w * mSurface->h; ++i)
126 {
127 if (((unsigned int*)mSurface->pixels)[i] == SDL_MapRGB(mSurface->format,255,0,255))
128 {
129 hasPink = true;
130 break;
131 }
132 }
133
134 for (i = 0; i < mSurface->w * mSurface->h; ++i)
135 {
136 Uint8 r, g, b, a;
137
138 SDL_GetRGBA(((unsigned int*)mSurface->pixels)[i], mSurface->format,
139 &r, &g, &b, &a);
140
141 if (a != 255)
142 {
143 hasAlpha = true;
144 break;
145 }
146 }
147
148 SDL_Surface *tmp;
149
150 if (hasAlpha)
151 {
152 tmp = SDL_DisplayFormatAlpha(mSurface);
153 SDL_FreeSurface(mSurface);
154 mSurface = NULL;
155 }
156 else
157 {
158 tmp = SDL_DisplayFormat(mSurface);
159 SDL_FreeSurface(mSurface);
160 mSurface = NULL;
161 }
162
163 if (hasPink)
164 {
165 SDL_SetColorKey(tmp, SDL_SRCCOLORKEY,
166 SDL_MapRGB(tmp->format,255,0,255));
167 }
168 if (hasAlpha)
169 {
170 SDL_SetAlpha(tmp, SDL_SRCALPHA, 255);
171 }
172
173 mSurface = tmp;
174 }
175
176 void SDLImage::free()
177 {
178 SDL_FreeSurface(mSurface);
179 }
180 }