annotate test/threadwin.c @ 1066:671bbd773c8a

Resize window to fit asked video mode
author Patrice Mandin <patmandin@gmail.com>
date Thu, 02 Jun 2005 22:02:18 +0000
parents cb40b26523a5
children be9c9c8f6d53
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:
562
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175 printf("Key '%c' has been %s\n",
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176 events[i].key.keysym.unicode,
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177 (events[i].key.state == SDL_PRESSED) ?
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178 "pressed" : "released");
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179
0
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180 /* Allow hitting <ESC> to quit the app */
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181 if ( events[i].key.keysym.sym == SDLK_ESCAPE ) {
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182 done = 1;
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183 }
562
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184
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185 /* skip events now that aren't KEYUPs... */
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186 if (events[i].key.state == SDL_PRESSED)
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187 break;
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188
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189 if ( events[i].key.keysym.sym == SDLK_f ) {
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190 int rc = 0;
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191 printf("attempting to toggle fullscreen...\n");
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192 rc = SDL_WM_ToggleFullScreen(SDL_GetVideoSurface());
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193 printf("SDL_WM_ToggleFullScreen returned %d.\n", rc);
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194 }
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195
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196 if ( events[i].key.keysym.sym == SDLK_g ) {
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197 SDL_GrabMode m;
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198 m = SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON ?
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199 SDL_GRAB_OFF : SDL_GRAB_ON;
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200 printf("attempting to toggle input grab to %s...\n",
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201 m == SDL_GRAB_ON ? "ON" : "OFF");
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202 SDL_WM_GrabInput(m);
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203 printf("attempt finished.\n");
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204 }
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205
0
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206 break;
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207 }
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208 }
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209 /* Give up some CPU to allow events to arrive */
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210 SDL_Delay(20);
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211 }
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212 return(0);
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213 }
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214
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215 int main(int argc, char *argv[])
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216 {
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217 SDL_Surface *screen;
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218 SDL_Surface *icon;
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219 Uint8 *icon_mask;
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220 int i, parsed;
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221 Uint8 *buffer;
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222 SDL_Color palette[256];
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223 Uint32 init_flags;
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224 Uint8 video_bpp;
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225 Uint32 video_flags;
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226 SDL_Thread *mouse_thread;
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227 SDL_Thread *keybd_thread;
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228
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229 /* Set the options, based on command line arguments */
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230 init_flags = SDL_INIT_VIDEO;
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231 video_bpp = 8;
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232 video_flags = SDL_SWSURFACE;
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233 parsed = 1;
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234 while ( parsed ) {
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235 /* If the threaded option is enabled, and the SDL library hasn't
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236 been compiled with threaded events enabled, then the mouse and
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237 keyboard won't respond.
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238 */
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239 if ( (argc >= 2) && (strcmp(argv[1], "-threaded") == 0) ) {
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240 init_flags |= SDL_INIT_EVENTTHREAD;
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241 argc -= 1;
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242 argv += 1;
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243 printf("Running with threaded events\n");
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244 } else
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245 if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) {
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246 video_flags |= SDL_FULLSCREEN;
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247 argc -= 1;
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248 argv += 1;
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249 } else
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250 if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) {
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251 video_bpp = atoi(argv[2]);
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252 argc -= 2;
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253 argv += 2;
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254 } else {
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255 parsed = 0;
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256 }
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257 }
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258
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259 /* Initialize SDL with the requested flags */
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260 if ( SDL_Init(init_flags) < 0 ) {
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261 fprintf(stderr,
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262 "Couldn't initialize SDL: %s\n", SDL_GetError());
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263 exit(1);
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264 }
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265 atexit(SDL_Quit);
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266
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267 /* Set the icon -- this must be done before the first mode set */
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268 icon = LoadIconSurface("icon.bmp", &icon_mask);
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269 if ( icon != NULL ) {
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270 SDL_WM_SetIcon(icon, icon_mask);
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271 }
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272 if ( icon_mask != NULL )
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273 free(icon_mask);
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274
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275 /* Initialize the display */
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276 screen = SDL_SetVideoMode(640, 480, video_bpp, video_flags);
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277 if ( screen == NULL ) {
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278 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n",
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279 video_bpp, SDL_GetError());
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280 exit(1);
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diff changeset
281 }
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282 printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ?
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diff changeset
283 "fullscreen" : "windowed");
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diff changeset
284
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diff changeset
285 /* Enable printable characters */
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286 SDL_EnableUNICODE(1);
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287
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diff changeset
288 /* Set an event filter that discards everything but QUIT */
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diff changeset
289 SDL_SetEventFilter(FilterEvents);
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diff changeset
290
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diff changeset
291 /* Create the event handling threads */
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diff changeset
292 mouse_thread = SDL_CreateThread(HandleMouse, NULL);
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diff changeset
293 keybd_thread = SDL_CreateThread(HandleKeyboard, NULL);
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diff changeset
294
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diff changeset
295 /* Set the surface pixels and refresh! */
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diff changeset
296 for ( i=0; i<256; ++i ) {
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diff changeset
297 palette[i].r = 255-i;
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diff changeset
298 palette[i].g = 255-i;
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diff changeset
299 palette[i].b = 255-i;
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diff changeset
300 }
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diff changeset
301 SDL_SetColors(screen, palette, 0, 256);
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parents:
diff changeset
302 if ( SDL_LockSurface(screen) < 0 ) {
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diff changeset
303 fprintf(stderr, "Couldn't lock display surface: %s\n",
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diff changeset
304 SDL_GetError());
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diff changeset
305 exit(2);
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parents:
diff changeset
306 }
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diff changeset
307 buffer = (Uint8 *)screen->pixels;
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diff changeset
308 for ( i=0; i<screen->h; ++i ) {
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parents:
diff changeset
309 memset(buffer,(i*255)/screen->h,
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diff changeset
310 screen->w*screen->format->BytesPerPixel);
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diff changeset
311 buffer += screen->pitch;
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diff changeset
312 }
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diff changeset
313 SDL_UnlockSurface(screen);
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diff changeset
314 SDL_UpdateRect(screen, 0, 0, 0, 0);
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diff changeset
315
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parents:
diff changeset
316 /* Loop, waiting for QUIT */
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parents:
diff changeset
317 while ( ! done ) {
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parents:
diff changeset
318 if ( ! (init_flags & SDL_INIT_EVENTTHREAD) ) {
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diff changeset
319 SDL_PumpEvents(); /* Needed when event thread is off */
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diff changeset
320 }
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diff changeset
321 if ( SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, SDL_QUITMASK) ) {
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diff changeset
322 done = 1;
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diff changeset
323 }
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diff changeset
324 /* Give up some CPU so the events can accumulate */
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diff changeset
325 SDL_Delay(20);
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diff changeset
326 }
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diff changeset
327 SDL_WaitThread(mouse_thread, NULL);
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diff changeset
328 SDL_WaitThread(keybd_thread, NULL);
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diff changeset
329 return(0);
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diff changeset
330 }