Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickupdate.html @ 1012:f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
From: Jonathan Atkins
Subject: [SDL] SDL_SaveBMP width bugfix
this fixes the pitch versus width difference that can happen
(especially for 8bit and 24bit (with the exact RGBAmasks) surfaces)
when you use SDL_SaveBMP. The problem was the pitch was used
instead of the width, which in some cases is much wider than the
screen area you really want to save...making for ugly crud on the
saved image borders.
This code has been tested with & without pitch overhangs...and
with the right masks for 24 bit surfaces.
I tested 8,15,16,24,32-0RGB,32-RGBA(with no SDL_SRCALPHA flag).
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 14 Dec 2004 06:20:49 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_JoystickUpdate</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Joystick" | |
14 HREF="joystick.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_JoystickNumButtons" | |
17 HREF="sdljoysticknumbuttons.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_JoystickGetAxis" | |
20 HREF="sdljoystickgetaxis.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdljoysticknumbuttons.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdljoystickgetaxis.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLJOYSTICKUPDATE" | |
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74 ></A |
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75 >SDL_JoystickUpdate</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN6296" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_JoystickUpdate -- Updates the state of all joysticks</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN6299" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN6300" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_JoystickUpdate</B | |
108 ></CODE | |
109 >(void);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN6306" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Updates the state(position, buttons, etc.) of all open joysticks. If joystick events have been enabled with <A | |
124 HREF="sdljoystickeventstate.html" | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_JoystickEventState</TT | |
128 ></A | |
129 > then this is called automatically in the event loop.</P | |
130 ></DIV | |
131 ><DIV | |
132 CLASS="REFSECT1" | |
133 ><A | |
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134 NAME="AEN6311" |
0 | 135 ></A |
136 ><H2 | |
137 >See Also</H2 | |
138 ><P | |
139 ><A | |
140 HREF="sdljoystickeventstate.html" | |
141 ><TT | |
142 CLASS="FUNCTION" | |
143 >SDL_JoystickEventState</TT | |
144 ></A | |
145 ></P | |
146 ></DIV | |
147 ><DIV | |
148 CLASS="NAVFOOTER" | |
149 ><HR | |
150 ALIGN="LEFT" | |
151 WIDTH="100%"><TABLE | |
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152 SUMMARY="Footer navigation table" |
0 | 153 WIDTH="100%" |
154 BORDER="0" | |
155 CELLPADDING="0" | |
156 CELLSPACING="0" | |
157 ><TR | |
158 ><TD | |
159 WIDTH="33%" | |
160 ALIGN="left" | |
161 VALIGN="top" | |
162 ><A | |
163 HREF="sdljoysticknumbuttons.html" | |
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164 ACCESSKEY="P" |
0 | 165 >Prev</A |
166 ></TD | |
167 ><TD | |
168 WIDTH="34%" | |
169 ALIGN="center" | |
170 VALIGN="top" | |
171 ><A | |
172 HREF="index.html" | |
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173 ACCESSKEY="H" |
0 | 174 >Home</A |
175 ></TD | |
176 ><TD | |
177 WIDTH="33%" | |
178 ALIGN="right" | |
179 VALIGN="top" | |
180 ><A | |
181 HREF="sdljoystickgetaxis.html" | |
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182 ACCESSKEY="N" |
0 | 183 >Next</A |
184 ></TD | |
185 ></TR | |
186 ><TR | |
187 ><TD | |
188 WIDTH="33%" | |
189 ALIGN="left" | |
190 VALIGN="top" | |
191 >SDL_JoystickNumButtons</TD | |
192 ><TD | |
193 WIDTH="34%" | |
194 ALIGN="center" | |
195 VALIGN="top" | |
196 ><A | |
197 HREF="joystick.html" | |
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198 ACCESSKEY="U" |
0 | 199 >Up</A |
200 ></TD | |
201 ><TD | |
202 WIDTH="33%" | |
203 ALIGN="right" | |
204 VALIGN="top" | |
205 >SDL_JoystickGetAxis</TD | |
206 ></TR | |
207 ></TABLE | |
208 ></DIV | |
209 ></BODY | |
210 ></HTML | |
211 > |