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annotate test/testwm.c @ 1696:3695d3637045 SDL-1.3

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Fixed bug #256
author Sam Lantinga <slouken@libsdl.org>
date Wed, 21 Jun 2006 07:36:00 +0000
parents 8d7fecceb9ef
children 6c63fc2bd986
rev   line source
0
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1
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2 /* Test out the window manager interaction functions */
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3
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4 #include <stdio.h>
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5 #include <stdlib.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
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10 /* Is the cursor visible? */
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11 static int visible = 1;
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12
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13 static Uint8 video_bpp;
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14 static Uint32 video_flags;
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15
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16 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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17 static void
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18 quit(int rc)
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19 {
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20 SDL_Quit();
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21 exit(rc);
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22 }
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23
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24 int
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25 SetVideoMode(int w, int h)
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26 {
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27 SDL_Surface *screen;
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28 int i;
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29 Uint8 *buffer;
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30 SDL_Color palette[256];
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31
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32 screen = SDL_SetVideoMode(w, h, video_bpp, video_flags);
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33 if (screen == NULL) {
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34 fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n",
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35 w, h, video_bpp, SDL_GetError());
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36 return (-1);
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37 }
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38 printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ?
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39 "fullscreen" : "windowed");
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41 /* Set the surface pixels and refresh! */
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42 for (i = 0; i < 256; ++i) {
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43 palette[i].r = 255 - i;
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44 palette[i].g = 255 - i;
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45 palette[i].b = 255 - i;
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46 }
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47 SDL_SetColors(screen, palette, 0, 256);
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48 if (SDL_LockSurface(screen) < 0) {
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49 fprintf(stderr, "Couldn't lock display surface: %s\n",
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50 SDL_GetError());
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51 return (-1);
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52 }
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53 buffer = (Uint8 *) screen->pixels;
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54 for (i = 0; i < screen->h; ++i) {
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55 memset(buffer, (i * 255) / screen->h,
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56 screen->w * screen->format->BytesPerPixel);
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57 buffer += screen->pitch;
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58 }
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59 SDL_UnlockSurface(screen);
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60 SDL_UpdateRect(screen, 0, 0, 0, 0);
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61
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62 return (0);
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63 }
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64
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65 SDL_Surface *
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66 LoadIconSurface(char *file, Uint8 ** maskp)
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67 {
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68 SDL_Surface *icon;
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69 Uint8 *pixels;
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70 Uint8 *mask;
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71 int mlen, i, j;
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72
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73 *maskp = NULL;
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74
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75 /* Load the icon surface */
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76 icon = SDL_LoadBMP(file);
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77 if (icon == NULL) {
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78 fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
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79 return (NULL);
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80 }
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81
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82 /* Check width and height
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83 if ( (icon->w%8) != 0 ) {
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84 fprintf(stderr, "Icon width must be a multiple of 8!\n");
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85 SDL_FreeSurface(icon);
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86 return(NULL);
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87 }
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88 */
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89
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90
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91 if (icon->format->palette == NULL) {
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92 fprintf(stderr, "Icon must have a palette!\n");
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93 SDL_FreeSurface(icon);
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94 return (NULL);
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95 }
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96
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97 /* Set the colorkey */
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98 SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *) icon->pixels));
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99
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100 /* Create the mask */
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101 pixels = (Uint8 *) icon->pixels;
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102 printf("Transparent pixel: (%d,%d,%d)\n",
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103 icon->format->palette->colors[*pixels].r,
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104 icon->format->palette->colors[*pixels].g,
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105 icon->format->palette->colors[*pixels].b);
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106 mlen = (icon->w * icon->h + 7) / 8;
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107 mask = (Uint8 *) malloc(mlen);
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108 if (mask == NULL) {
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109 fprintf(stderr, "Out of memory!\n");
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110 SDL_FreeSurface(icon);
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111 return (NULL);
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112 }
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113 memset(mask, 0, mlen);
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114 for (i = 0; i < icon->h; i++)
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115 for (j = 0; j < icon->w; j++) {
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116 int pindex = i * icon->pitch + j;
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117 int mindex = i * icon->w + j;
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118 if (pixels[pindex] != *pixels)
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119 mask[mindex >> 3] |= 1 << (7 - (mindex & 7));
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120 }
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121 *maskp = mask;
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122 return (icon);
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123 }
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124
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125 void
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126 HotKey_ToggleFullScreen(void)
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127 {
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128 SDL_Surface *screen;
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129
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130 screen = SDL_GetVideoSurface();
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131 if (SDL_WM_ToggleFullScreen(screen)) {
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132 printf("Toggled fullscreen mode - now %s\n",
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133 (screen->flags & SDL_FULLSCREEN) ? "fullscreen" : "windowed");
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134 } else {
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135 printf("Unable to toggle fullscreen mode\n");
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136 video_flags ^= SDL_FULLSCREEN;
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137 SetVideoMode(screen->w, screen->h);
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138 }
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139 }
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140
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141 void
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142 HotKey_ToggleGrab(void)
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143 {
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144 SDL_GrabMode mode;
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145
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146 printf("Ctrl-G: toggling input grab!\n");
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147 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
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148 if (mode == SDL_GRAB_ON) {
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149 printf("Grab was on\n");
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150 } else {
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151 printf("Grab was off\n");
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152 }
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153 mode = SDL_WM_GrabInput(mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
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154 if (mode == SDL_GRAB_ON) {
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155 printf("Grab is now on\n");
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156 } else {
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157 printf("Grab is now off\n");
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158 }
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159 }
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160
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161 void
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162 HotKey_Iconify(void)
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163 {
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164 printf("Ctrl-Z: iconifying window!\n");
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165 SDL_WM_IconifyWindow();
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166 }
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167
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168 void
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169 HotKey_Quit(void)
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170 {
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171 SDL_Event event;
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172
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173 printf("Posting internal quit request\n");
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174 event.type = SDL_USEREVENT;
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175 SDL_PushEvent(&event);
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176 }
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177
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178 int SDLCALL
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179 FilterEvents(SDL_Event * event)
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180 {
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181 static int reallyquit = 0;
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182
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183 switch (event->type) {
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184
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185 case SDL_ACTIVEEVENT:
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186 /* See what happened */
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187 printf("App %s ", event->active.gain ? "gained" : "lost");
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188 if (event->active.state & SDL_APPACTIVE)
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189 printf("active ");
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190 if (event->active.state & SDL_APPINPUTFOCUS)
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191 printf("input ");
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192 if (event->active.state & SDL_APPMOUSEFOCUS)
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193 printf("mouse ");
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194 printf("focus\n");
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195
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196 /* See if we are iconified or restored */
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197 if (event->active.state & SDL_APPACTIVE) {
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198 printf("App has been %s\n",
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199 event->active.gain ? "restored" : "iconified");
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200 }
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201 return (0);
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202
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203 /* We want to toggle visibility on buttonpress */
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204 case SDL_MOUSEBUTTONDOWN:
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205 case SDL_MOUSEBUTTONUP:
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206 if (event->button.state == SDL_PRESSED) {
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207 visible = !visible;
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208 SDL_ShowCursor(visible);
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209 }
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210 printf("Mouse button %d has been %s\n",
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211 event->button.button,
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212 (event->button.state == SDL_PRESSED) ? "pressed" : "released");
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213 return (0);
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214
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215 /* Show relative mouse motion */
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216 case SDL_MOUSEMOTION:
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217 #if 0
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218 printf("Mouse motion: {%d,%d} (%d,%d)\n",
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219 event->motion.x, event->motion.y,
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220 event->motion.xrel, event->motion.yrel);
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221 #endif
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222 return (0);
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223
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224 case SDL_KEYDOWN:
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225 if (event->key.keysym.sym == SDLK_ESCAPE) {
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226 HotKey_Quit();
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227 }
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228 if ((event->key.keysym.sym == SDLK_g) &&
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229 (event->key.keysym.mod & KMOD_CTRL)) {
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230 HotKey_ToggleGrab();
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231 }
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232 if ((event->key.keysym.sym == SDLK_z) &&
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233 (event->key.keysym.mod & KMOD_CTRL)) {
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234 HotKey_Iconify();
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235 }
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236 if ((event->key.keysym.sym == SDLK_RETURN) &&
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237 (event->key.keysym.mod & KMOD_ALT)) {
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238 HotKey_ToggleFullScreen();
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239 }
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240 return (0);
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241
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242 /* Pass the video resize event through .. */
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243 case SDL_VIDEORESIZE:
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244 return (1);
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245
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246 /* This is important! Queue it if we want to quit. */
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247 case SDL_QUIT:
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248 if (!reallyquit) {
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249 reallyquit = 1;
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250 printf("Quit requested\n");
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251 return (0);
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252 }
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253 printf("Quit demanded\n");
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254 return (1);
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255
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256 /* This will never happen because events queued directly
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257 to the event queue are not filtered.
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258 */
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259 case SDL_USEREVENT:
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260 return (1);
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261
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262 /* Drop all other events */
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263 default:
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264 return (0);
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265 }
0
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266 }
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267
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268 int
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269 main(int argc, char *argv[])
0
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270 {
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271 SDL_Event event;
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272 char *title;
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273 SDL_Surface *icon;
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274 Uint8 *icon_mask;
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275 int parsed;
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276 int w, h;
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277
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278 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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279 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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280 return (1);
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281 }
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282
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283 /* Check command line arguments */
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284 w = 640;
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285 h = 480;
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286 video_bpp = 8;
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287 video_flags = SDL_SWSURFACE;
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288 parsed = 1;
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289 while (parsed) {
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290 if ((argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0)) {
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291 video_flags |= SDL_FULLSCREEN;
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292 argc -= 1;
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293 argv += 1;
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294 } else if ((argc >= 2) && (strcmp(argv[1], "-resize") == 0)) {
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295 video_flags |= SDL_RESIZABLE;
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296 argc -= 1;
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297 argv += 1;
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298 } else if ((argc >= 2) && (strcmp(argv[1], "-noframe") == 0)) {
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299 video_flags |= SDL_NOFRAME;
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300 argc -= 1;
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301 argv += 1;
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302 } else if ((argc >= 3) && (strcmp(argv[1], "-width") == 0)) {
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303 w = atoi(argv[2]);
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304 argc -= 2;
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305 argv += 2;
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306 } else if ((argc >= 3) && (strcmp(argv[1], "-height") == 0)) {
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307 h = atoi(argv[2]);
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308 argc -= 2;
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309 argv += 2;
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310 } else if ((argc >= 3) && (strcmp(argv[1], "-bpp") == 0)) {
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311 video_bpp = atoi(argv[2]);
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312 argc -= 2;
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313 argv += 2;
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314 } else {
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315 parsed = 0;
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316 }
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317 }
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318
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319 /* Set the icon -- this must be done before the first mode set */
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320 icon = LoadIconSurface("icon.bmp", &icon_mask);
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321 if (icon != NULL) {
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322 SDL_WM_SetIcon(icon, icon_mask);
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323 }
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324 if (icon_mask != NULL)
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325 free(icon_mask);
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326
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327 /* Set the title bar */
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328 if (argv[1] == NULL)
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329 title = "Testing 1.. 2.. 3...";
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330 else
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331 title = argv[1];
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332 SDL_WM_SetCaption(title, "testwm");
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333
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334 /* See if it's really set */
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335 SDL_WM_GetCaption(&title, NULL);
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336 if (title)
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337 printf("Title was set to: %s\n", title);
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338 else
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339 printf("No window title was set!\n");
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340
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341 /* Initialize the display */
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342 if (SetVideoMode(w, h) < 0) {
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343 quit(1);
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344 }
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345
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346 /* Set an event filter that discards everything but QUIT */
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347 SDL_SetEventFilter(FilterEvents);
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348
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349 /* Ignore key up events, they don't even get filtered */
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350 SDL_EventState(SDL_KEYUP, SDL_IGNORE);
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351
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352 /* Loop, waiting for QUIT */
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353 while (SDL_WaitEvent(&event)) {
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354 switch (event.type) {
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355 case SDL_VIDEORESIZE:
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356 printf("Got a resize event: %dx%d\n",
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357 event.resize.w, event.resize.h);
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358 SetVideoMode(event.resize.w, event.resize.h);
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diff changeset
359 break;
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360 case SDL_USEREVENT:
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361 printf("Handling internal quit request\n");
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362 /* Fall through to the quit handler */
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363 case SDL_QUIT:
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364 printf("Bye bye..\n");
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365 quit(0);
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366 default:
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367 /* This should never happen */
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368 printf("Warning: Event %d wasn't filtered\n", event.type);
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369 break;
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370 }
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371 }
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372 printf("SDL_WaitEvent() error: %s\n", SDL_GetError());
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373 SDL_Quit();
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374 return (255);
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375 }