Mercurial > sdl-ios-xcode
annotate docs/html/guideeventexamples.html @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 21:52:26 +0000 |
| parents | 55f1f1b3e27d |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Event Examples</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Examples" | |
| 14 HREF="guideexamples.html"><LINK | |
| 15 REL="PREVIOUS" | |
|
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16 TITLE="Examples" |
|
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17 HREF="guideexamples.html"><LINK |
| 0 | 18 REL="NEXT" |
| 19 TITLE="Audio Examples" | |
| 20 HREF="guideaudioexamples.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="SECT1" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
|
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47 HREF="guideexamples.html" |
| 0 | 48 >Prev</A |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 >Chapter 4. Examples</TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="guideaudioexamples.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><DIV | |
| 69 CLASS="SECT1" | |
| 70 ><H1 | |
| 71 CLASS="SECT1" | |
| 72 ><A | |
| 73 NAME="GUIDEEVENTEXAMPLES" | |
| 74 >Event Examples</A | |
| 75 ></H1 | |
| 76 ><P | |
| 77 ></P | |
| 78 ><DIV | |
| 79 CLASS="SECT2" | |
| 80 ><H2 | |
| 81 CLASS="SECT2" | |
| 82 ><A | |
|
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83 NAME="AEN375" |
| 0 | 84 >Filtering and Handling Events</A |
| 85 ></H2 | |
| 86 ><P | |
| 87 ><PRE | |
| 88 CLASS="PROGRAMLISTING" | |
| 89 >#include <stdio.h> | |
| 90 #include <stdlib.h> | |
| 91 | |
| 92 #include "SDL.h" | |
| 93 | |
| 94 /* This function may run in a separate event thread */ | |
| 95 int FilterEvents(const SDL_Event *event) { | |
| 96 static int boycott = 1; | |
| 97 | |
| 98 /* This quit event signals the closing of the window */ | |
| 99 if ( (event->type == SDL_QUIT) && boycott ) { | |
| 100 printf("Quit event filtered out -- try again.\n"); | |
| 101 boycott = 0; | |
| 102 return(0); | |
| 103 } | |
| 104 if ( event->type == SDL_MOUSEMOTION ) { | |
| 105 printf("Mouse moved to (%d,%d)\n", | |
| 106 event->motion.x, event->motion.y); | |
| 107 return(0); /* Drop it, we've handled it */ | |
| 108 } | |
| 109 return(1); | |
| 110 } | |
| 111 | |
| 112 int main(int argc, char *argv[]) | |
| 113 { | |
| 114 SDL_Event event; | |
| 115 | |
| 116 /* Initialize the SDL library (starts the event loop) */ | |
| 117 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
| 118 fprintf(stderr, | |
| 119 "Couldn't initialize SDL: %s\n", SDL_GetError()); | |
| 120 exit(1); | |
| 121 } | |
| 122 | |
| 123 /* Clean up on exit, exit on window close and interrupt */ | |
| 124 atexit(SDL_Quit); | |
| 125 | |
| 126 /* Ignore key events */ | |
| 127 SDL_EventState(SDL_KEYDOWN, SDL_IGNORE); | |
| 128 SDL_EventState(SDL_KEYUP, SDL_IGNORE); | |
| 129 | |
| 130 /* Filter quit and mouse motion events */ | |
| 131 SDL_SetEventFilter(FilterEvents); | |
| 132 | |
| 133 /* The mouse isn't much use unless we have a display for reference */ | |
| 134 if ( SDL_SetVideoMode(640, 480, 8, 0) == NULL ) { | |
| 135 fprintf(stderr, "Couldn't set 640x480x8 video mode: %s\n", | |
| 136 SDL_GetError()); | |
| 137 exit(1); | |
| 138 } | |
| 139 | |
| 140 /* Loop waiting for ESC+Mouse_Button */ | |
| 141 while ( SDL_WaitEvent(&event) >= 0 ) { | |
| 142 switch (event.type) { | |
| 143 case SDL_ACTIVEEVENT: { | |
| 144 if ( event.active.state & SDL_APPACTIVE ) { | |
| 145 if ( event.active.gain ) { | |
| 146 printf("App activated\n"); | |
| 147 } else { | |
| 148 printf("App iconified\n"); | |
| 149 } | |
| 150 } | |
| 151 } | |
| 152 break; | |
| 153 | |
| 154 case SDL_MOUSEBUTTONDOWN: { | |
| 155 Uint8 *keys; | |
| 156 | |
| 157 keys = SDL_GetKeyState(NULL); | |
| 158 if ( keys[SDLK_ESCAPE] == SDL_PRESSED ) { | |
| 159 printf("Bye bye...\n"); | |
| 160 exit(0); | |
| 161 } | |
| 162 printf("Mouse button pressed\n"); | |
| 163 } | |
| 164 break; | |
| 165 | |
| 166 case SDL_QUIT: { | |
| 167 printf("Quit requested, quitting.\n"); | |
| 168 exit(0); | |
| 169 } | |
| 170 break; | |
| 171 } | |
| 172 } | |
| 173 /* This should never happen */ | |
| 174 printf("SDL_WaitEvent error: %s\n", SDL_GetError()); | |
| 175 exit(1); | |
| 176 }</PRE | |
| 177 ></P | |
| 178 ></DIV | |
| 179 ></DIV | |
| 180 ><DIV | |
| 181 CLASS="NAVFOOTER" | |
| 182 ><HR | |
| 183 ALIGN="LEFT" | |
| 184 WIDTH="100%"><TABLE | |
| 185 WIDTH="100%" | |
| 186 BORDER="0" | |
| 187 CELLPADDING="0" | |
| 188 CELLSPACING="0" | |
| 189 ><TR | |
| 190 ><TD | |
| 191 WIDTH="33%" | |
| 192 ALIGN="left" | |
| 193 VALIGN="top" | |
| 194 ><A | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
195 HREF="guideexamples.html" |
| 0 | 196 >Prev</A |
| 197 ></TD | |
| 198 ><TD | |
| 199 WIDTH="34%" | |
| 200 ALIGN="center" | |
| 201 VALIGN="top" | |
| 202 ><A | |
| 203 HREF="index.html" | |
| 204 >Home</A | |
| 205 ></TD | |
| 206 ><TD | |
| 207 WIDTH="33%" | |
| 208 ALIGN="right" | |
| 209 VALIGN="top" | |
| 210 ><A | |
| 211 HREF="guideaudioexamples.html" | |
| 212 >Next</A | |
| 213 ></TD | |
| 214 ></TR | |
| 215 ><TR | |
| 216 ><TD | |
| 217 WIDTH="33%" | |
| 218 ALIGN="left" | |
| 219 VALIGN="top" | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
220 >Examples</TD |
| 0 | 221 ><TD |
| 222 WIDTH="34%" | |
| 223 ALIGN="center" | |
| 224 VALIGN="top" | |
| 225 ><A | |
| 226 HREF="guideexamples.html" | |
| 227 >Up</A | |
| 228 ></TD | |
| 229 ><TD | |
| 230 WIDTH="33%" | |
| 231 ALIGN="right" | |
| 232 VALIGN="top" | |
| 233 >Audio Examples</TD | |
| 234 ></TR | |
| 235 ></TABLE | |
| 236 ></DIV | |
| 237 ></BODY | |
| 238 ></HTML | |
| 239 > |