annotate test/threadwin.c @ 273:72acb06d3721

*** empty log message ***
author Sam Lantinga <slouken@libsdl.org>
date Tue, 22 Jan 2002 21:14:36 +0000
parents 74212992fb08
children cb40b26523a5
rev   line source
0
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1
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2 /* Test out the multi-threaded event handling functions */
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3
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4 #include <stdlib.h>
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5 #include <stdio.h>
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6 #include <string.h>
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7
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8 #include "SDL.h"
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9 #include "SDL_thread.h"
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10
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11 /* Are we done yet? */
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12 static int done = 0;
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13
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14 /* Is the cursor visible? */
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15 static int visible = 1;
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16
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17 SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp)
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18 {
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19 SDL_Surface *icon;
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20 Uint8 *pixels;
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21 Uint8 *mask;
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22 int mlen, i;
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23
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24 *maskp = NULL;
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25
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26 /* Load the icon surface */
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27 icon = SDL_LoadBMP(file);
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28 if ( icon == NULL ) {
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29 fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
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30 return(NULL);
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31 }
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32
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33 /* Check width and height */
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34 if ( (icon->w%8) != 0 ) {
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35 fprintf(stderr, "Icon width must be a multiple of 8!\n");
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36 SDL_FreeSurface(icon);
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37 return(NULL);
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38 }
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39 if ( icon->format->palette == NULL ) {
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40 fprintf(stderr, "Icon must have a palette!\n");
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41 SDL_FreeSurface(icon);
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42 return(NULL);
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43 }
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44
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45 /* Set the colorkey */
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46 SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels));
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47
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48 /* Create the mask */
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49 pixels = (Uint8 *)icon->pixels;
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50 printf("Transparent pixel: (%d,%d,%d)\n",
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51 icon->format->palette->colors[*pixels].r,
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52 icon->format->palette->colors[*pixels].g,
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53 icon->format->palette->colors[*pixels].b);
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54 mlen = icon->w*icon->h;
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55 mask = (Uint8 *)malloc(mlen/8);
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56 if ( mask == NULL ) {
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57 fprintf(stderr, "Out of memory!\n");
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58 SDL_FreeSurface(icon);
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59 return(NULL);
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60 }
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61 memset(mask, 0, mlen/8);
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62 for ( i=0; i<mlen; ) {
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63 if ( pixels[i] != *pixels )
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64 mask[i/8] |= 0x01;
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65 ++i;
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66 if ( (i%8) != 0 )
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67 mask[i/8] <<= 1;
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68 }
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69 *maskp = mask;
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70 return(icon);
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71 }
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72
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73 int FilterEvents(const SDL_Event *event)
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74 {
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75 static int reallyquit = 0;
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76
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77 switch (event->type) {
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78
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79 case SDL_ACTIVEEVENT:
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80 /* See what happened */
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81 printf("App %s ",
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82 event->active.gain ? "gained" : "lost");
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83 if ( event->active.state & SDL_APPACTIVE )
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84 printf("active ");
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85 if ( event->active.state & SDL_APPMOUSEFOCUS )
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86 printf("mouse ");
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87 if ( event->active.state & SDL_APPINPUTFOCUS )
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88 printf("input ");
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89 printf("focus\n");
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90
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91 /* See if we are iconified or restored */
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92 if ( event->active.state & SDL_APPACTIVE ) {
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93 printf("App has been %s\n",
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94 event->active.gain ?
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95 "restored" : "iconified");
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96 }
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97 return(0);
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98
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99 /* This is important! Queue it if we want to quit. */
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100 case SDL_QUIT:
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101 if ( ! reallyquit ) {
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102 reallyquit = 1;
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103 printf("Quit requested\n");
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104 return(0);
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105 }
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106 printf("Quit demanded\n");
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107 return(1);
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108
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109 /* Mouse and keyboard events go to threads */
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110 case SDL_MOUSEMOTION:
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111 case SDL_MOUSEBUTTONDOWN:
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112 case SDL_MOUSEBUTTONUP:
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113 case SDL_KEYDOWN:
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114 case SDL_KEYUP:
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115 return(1);
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116
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117 /* Drop all other events */
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118 default:
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119 return(0);
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120 }
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121 }
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122
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123 int HandleMouse(void *unused)
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124 {
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125 SDL_Event events[10];
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126 int i, found;
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127 Uint32 mask;
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128
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129 /* Handle mouse events here */
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130 mask = (SDL_MOUSEMOTIONMASK|SDL_MOUSEBUTTONDOWNMASK|SDL_MOUSEBUTTONUPMASK);
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131 while ( ! done ) {
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132 found = SDL_PeepEvents(events, 10, SDL_GETEVENT, mask);
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133 for ( i=0; i<found; ++i ) {
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134 switch(events[i].type) {
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135 /* We want to toggle visibility on buttonpress */
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136 case SDL_MOUSEBUTTONDOWN:
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137 case SDL_MOUSEBUTTONUP:
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138 if ( events[i].button.state == SDL_PRESSED ) {
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139 visible = !visible;
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140 SDL_ShowCursor(visible);
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141 }
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142 printf("Mouse button %d has been %s\n",
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143 events[i].button.button,
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144 (events[i].button.state == SDL_PRESSED) ?
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145 "pressed" : "released");
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146 break;
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147 /* Show relative mouse motion */
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148 case SDL_MOUSEMOTION:
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149 printf("Mouse relative motion: {%d,%d}\n",
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150 events[i].motion.xrel, events[i].motion.yrel);
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151 break;
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152 }
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153 }
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154 /* Give up some CPU to allow events to arrive */
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155 SDL_Delay(20);
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156 }
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157 return(0);
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158 }
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159
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160 int HandleKeyboard(void *unused)
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161 {
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162 SDL_Event events[10];
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163 int i, found;
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164 Uint32 mask;
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165
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166 /* Handle mouse events here */
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167 mask = (SDL_KEYDOWNMASK|SDL_KEYUPMASK);
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168 while ( ! done ) {
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169 found = SDL_PeepEvents(events, 10, SDL_GETEVENT, mask);
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170 for ( i=0; i<found; ++i ) {
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171 switch(events[i].type) {
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172 /* We want to toggle visibility on buttonpress */
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173 case SDL_KEYDOWN:
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174 case SDL_KEYUP:
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175 /* Allow hitting <ESC> to quit the app */
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176 if ( events[i].key.keysym.sym == SDLK_ESCAPE ) {
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177 done = 1;
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178 }
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179 printf("Key '%c' has been %s\n",
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180 events[i].key.keysym.unicode,
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181 (events[i].key.state == SDL_PRESSED) ?
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182 "pressed" : "released");
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183 break;
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184 }
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185 }
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186 /* Give up some CPU to allow events to arrive */
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187 SDL_Delay(20);
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188 }
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189 return(0);
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190 }
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191
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192 int main(int argc, char *argv[])
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193 {
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194 SDL_Surface *screen;
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195 SDL_Surface *icon;
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196 Uint8 *icon_mask;
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197 int i, parsed;
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198 Uint8 *buffer;
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199 SDL_Color palette[256];
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200 Uint32 init_flags;
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201 Uint8 video_bpp;
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202 Uint32 video_flags;
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203 SDL_Thread *mouse_thread;
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204 SDL_Thread *keybd_thread;
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205
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206 /* Set the options, based on command line arguments */
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207 init_flags = SDL_INIT_VIDEO;
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208 video_bpp = 8;
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209 video_flags = SDL_SWSURFACE;
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210 parsed = 1;
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211 while ( parsed ) {
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212 /* If the threaded option is enabled, and the SDL library hasn't
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213 been compiled with threaded events enabled, then the mouse and
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214 keyboard won't respond.
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215 */
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216 if ( (argc >= 2) && (strcmp(argv[1], "-threaded") == 0) ) {
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217 init_flags |= SDL_INIT_EVENTTHREAD;
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218 argc -= 1;
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219 argv += 1;
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220 printf("Running with threaded events\n");
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221 } else
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222 if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) {
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223 video_flags |= SDL_FULLSCREEN;
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224 argc -= 1;
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225 argv += 1;
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226 } else
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227 if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) {
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228 video_bpp = atoi(argv[2]);
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229 argc -= 2;
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230 argv += 2;
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231 } else {
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232 parsed = 0;
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233 }
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234 }
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235
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236 /* Initialize SDL with the requested flags */
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237 if ( SDL_Init(init_flags) < 0 ) {
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238 fprintf(stderr,
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239 "Couldn't initialize SDL: %s\n", SDL_GetError());
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240 exit(1);
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241 }
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242 atexit(SDL_Quit);
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243
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244 /* Set the icon -- this must be done before the first mode set */
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245 icon = LoadIconSurface("icon.bmp", &icon_mask);
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246 if ( icon != NULL ) {
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247 SDL_WM_SetIcon(icon, icon_mask);
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248 }
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249 if ( icon_mask != NULL )
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250 free(icon_mask);
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251
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252 /* Initialize the display */
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253 screen = SDL_SetVideoMode(640, 480, video_bpp, video_flags);
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254 if ( screen == NULL ) {
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255 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n",
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256 video_bpp, SDL_GetError());
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257 exit(1);
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258 }
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259 printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ?
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260 "fullscreen" : "windowed");
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261
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262 /* Enable printable characters */
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263 SDL_EnableUNICODE(1);
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264
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265 /* Set an event filter that discards everything but QUIT */
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266 SDL_SetEventFilter(FilterEvents);
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267
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268 /* Create the event handling threads */
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269 mouse_thread = SDL_CreateThread(HandleMouse, NULL);
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270 keybd_thread = SDL_CreateThread(HandleKeyboard, NULL);
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271
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272 /* Set the surface pixels and refresh! */
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273 for ( i=0; i<256; ++i ) {
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274 palette[i].r = 255-i;
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275 palette[i].g = 255-i;
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276 palette[i].b = 255-i;
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277 }
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278 SDL_SetColors(screen, palette, 0, 256);
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279 if ( SDL_LockSurface(screen) < 0 ) {
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280 fprintf(stderr, "Couldn't lock display surface: %s\n",
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281 SDL_GetError());
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282 exit(2);
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283 }
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284 buffer = (Uint8 *)screen->pixels;
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285 for ( i=0; i<screen->h; ++i ) {
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286 memset(buffer,(i*255)/screen->h,
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287 screen->w*screen->format->BytesPerPixel);
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288 buffer += screen->pitch;
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289 }
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290 SDL_UnlockSurface(screen);
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291 SDL_UpdateRect(screen, 0, 0, 0, 0);
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diff changeset
292
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diff changeset
293 /* Loop, waiting for QUIT */
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diff changeset
294 while ( ! done ) {
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diff changeset
295 if ( ! (init_flags & SDL_INIT_EVENTTHREAD) ) {
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296 SDL_PumpEvents(); /* Needed when event thread is off */
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297 }
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diff changeset
298 if ( SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, SDL_QUITMASK) ) {
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diff changeset
299 done = 1;
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diff changeset
300 }
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diff changeset
301 /* Give up some CPU so the events can accumulate */
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diff changeset
302 SDL_Delay(20);
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diff changeset
303 }
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diff changeset
304 SDL_WaitThread(mouse_thread, NULL);
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diff changeset
305 SDL_WaitThread(keybd_thread, NULL);
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diff changeset
306 return(0);
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diff changeset
307 }