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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <stdlib.h>
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29 #include <string.h>
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30 #include <X11/Xlib.h>
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31 #include <X11/Xutil.h>
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32
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33 #include "SDL_version.h"
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34 #include "SDL_error.h"
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35 #include "SDL_timer.h"
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36 #include "SDL_video.h"
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37 #include "SDL_syswm.h"
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38 #include "SDL_events_c.h"
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39 #include "SDL_pixels_c.h"
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40 #include "SDL_x11modes_c.h"
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41 #include "SDL_x11wm_c.h"
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42
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43 /* This is necessary for working properly with Enlightenment, etc. */
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44 #define USE_ICON_WINDOW
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45
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46 void X11_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
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47 {
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48 SDL_Surface *sicon;
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49 XWMHints *wmhints;
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50 XImage *icon_image;
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51 Pixmap icon_pixmap;
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52 Pixmap mask_pixmap;
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53 #ifdef USE_ICON_WINDOW
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54 Window icon_window;
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55 #endif
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56 GC GC;
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57 XGCValues GCvalues;
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58 int i, b, dbpp;
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59 SDL_Rect bounds;
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60 Uint8 *LSBmask, *color_tried;
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61 Visual *dvis;
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62
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63 /* Lock the event thread, in multi-threading environments */
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64 SDL_Lock_EventThread();
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65
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66 /* The icon must use the default visual, depth and colormap of the
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67 screen, so it might need a conversion */
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68 dbpp = DefaultDepth(SDL_Display, SDL_Screen);
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69 switch(dbpp) {
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70 case 15:
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71 dbpp = 16; break;
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72 case 24:
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73 dbpp = 32; break;
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74 }
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75 dvis = DefaultVisual(SDL_Display, SDL_Screen);
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76
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77 /* The Visual struct is supposed to be opaque but we cheat a little */
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78 sicon = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
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79 dbpp,
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80 dvis->red_mask, dvis->green_mask,
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81 dvis->blue_mask, 0);
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82
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83 if ( sicon == NULL ) {
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84 goto done;
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85 }
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86 /* If we already have allocated colours from the default colormap,
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87 copy them */
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88 if(SDL_Visual == dvis && SDL_XColorMap == SDL_DisplayColormap
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89 && this->screen->format->palette && sicon->format->palette) {
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90 memcpy(sicon->format->palette->colors,
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91 this->screen->format->palette->colors,
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92 this->screen->format->palette->ncolors * sizeof(SDL_Color));
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93 }
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94
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95 bounds.x = 0;
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96 bounds.y = 0;
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97 bounds.w = icon->w;
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98 bounds.h = icon->h;
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99 if ( SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0 )
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100 goto done;
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101
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102 /* Lock down the colors used in the colormap */
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103 color_tried = NULL;
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104 if ( sicon->format->BitsPerPixel == 8 ) {
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105 SDL_Palette *palette;
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106 Uint8 *p;
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107 XColor wanted;
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108
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109 palette = sicon->format->palette;
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110 color_tried = malloc(palette->ncolors);
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111 if ( color_tried == NULL ) {
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112 goto done;
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113 }
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114 if ( SDL_iconcolors != NULL ) {
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115 free(SDL_iconcolors);
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116 }
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117 SDL_iconcolors = malloc(palette->ncolors
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118 * sizeof(*SDL_iconcolors));
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119 if ( SDL_iconcolors == NULL ) {
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120 free(color_tried);
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121 goto done;
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122 }
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123 memset(color_tried, 0, palette->ncolors);
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124 memset(SDL_iconcolors, 0,
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125 palette->ncolors * sizeof(*SDL_iconcolors));
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126
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127 p = (Uint8 *)sicon->pixels;
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128 for ( i = sicon->w*sicon->h; i > 0; --i, ++p ) {
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129 if ( ! color_tried[*p] ) {
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130 wanted.pixel = *p;
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131 wanted.red = (palette->colors[*p].r<<8);
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132 wanted.green = (palette->colors[*p].g<<8);
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133 wanted.blue = (palette->colors[*p].b<<8);
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134 wanted.flags = (DoRed|DoGreen|DoBlue);
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135 if (XAllocColor(SDL_Display,
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136 SDL_DisplayColormap, &wanted)) {
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137 ++SDL_iconcolors[wanted.pixel];
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138 }
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139 color_tried[*p] = 1;
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140 }
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141 }
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142 }
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143 if ( color_tried != NULL ) {
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144 free(color_tried);
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145 }
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146
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147 /* Translate mask data to LSB order and set the icon mask */
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148 i = (sicon->w/8)*sicon->h;
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149 LSBmask = (Uint8 *)malloc(i);
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150 if ( LSBmask == NULL ) {
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151 goto done;
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152 }
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153 memset(LSBmask, 0, i);
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154 while ( --i >= 0 ) {
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155 for ( b=0; b<8; ++b )
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156 LSBmask[i] |= (((mask[i]>>b)&0x01)<<(7-b));
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157 }
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158 mask_pixmap = XCreatePixmapFromBitmapData(SDL_Display, WMwindow,
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159 (char *)LSBmask, sicon->w, sicon->h, 1L, 0L, 1);
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160
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161 /* Transfer the image to an X11 pixmap */
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162 icon_image = XCreateImage(SDL_Display,
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163 DefaultVisual(SDL_Display, SDL_Screen),
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164 DefaultDepth(SDL_Display, SDL_Screen),
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165 ZPixmap, 0, (char *)sicon->pixels, sicon->w, sicon->h,
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166 ((sicon->format)->BytesPerPixel == 3) ? 32 :
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167 (sicon->format)->BytesPerPixel*8, 0);
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168 icon_pixmap = XCreatePixmap(SDL_Display, SDL_Root, sicon->w, sicon->h,
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169 DefaultDepth(SDL_Display, SDL_Screen));
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170 GC = XCreateGC(SDL_Display, icon_pixmap, 0, &GCvalues);
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171 XPutImage(SDL_Display, icon_pixmap, GC, icon_image,
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172 0, 0, 0, 0, sicon->w, sicon->h);
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173 XFreeGC(SDL_Display, GC);
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174 XDestroyImage(icon_image);
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175 free(LSBmask);
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176 sicon->pixels = NULL;
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177
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178 #ifdef USE_ICON_WINDOW
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179 /* Create an icon window and set the pixmap as its background */
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180 icon_window = XCreateSimpleWindow(SDL_Display, SDL_Root,
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181 0, 0, sicon->w, sicon->h, 0,
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182 CopyFromParent, CopyFromParent);
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183 XSetWindowBackgroundPixmap(SDL_Display, icon_window, icon_pixmap);
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184 XClearWindow(SDL_Display, icon_window);
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185 #endif
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186
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187 /* Set the window icon to the icon pixmap (and icon window) */
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188 wmhints = XAllocWMHints();
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189 wmhints->flags = (IconPixmapHint | IconMaskHint);
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190 wmhints->icon_pixmap = icon_pixmap;
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191 wmhints->icon_mask = mask_pixmap;
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192 #ifdef USE_ICON_WINDOW
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193 wmhints->flags |= IconWindowHint;
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194 wmhints->icon_window = icon_window;
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195 #endif
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196 XSetWMHints(SDL_Display, WMwindow, wmhints);
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197 XFree(wmhints);
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198 XSync(SDL_Display, False);
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199
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200 done:
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201 SDL_Unlock_EventThread();
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202 if ( sicon != NULL ) {
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203 SDL_FreeSurface(sicon);
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204 }
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205 return;
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206 }
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207
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208 void X11_SetCaption(_THIS, const char *title, const char *icon)
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209 {
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210 XTextProperty titleprop, iconprop;
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211
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212 /* Lock the event thread, in multi-threading environments */
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213 SDL_Lock_EventThread();
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214
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215 if ( title != NULL ) {
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216 XStringListToTextProperty((char **)&title, 1, &titleprop);
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217 XSetWMName(SDL_Display, WMwindow, &titleprop);
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218 XFree(titleprop.value);
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219 }
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220 if ( icon != NULL ) {
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221 XStringListToTextProperty((char **)&icon, 1, &iconprop);
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222 XSetWMIconName(SDL_Display, WMwindow, &iconprop);
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223 XFree(iconprop.value);
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224 }
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225 XSync(SDL_Display, False);
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226
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227 SDL_Unlock_EventThread();
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228 }
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229
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230 /* Iconify the window */
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231 int X11_IconifyWindow(_THIS)
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232 {
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233 int result;
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234
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235 SDL_Lock_EventThread();
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236 result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
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237 XSync(SDL_Display, False);
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238 SDL_Unlock_EventThread();
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239 return(result);
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240 }
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241
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242 SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
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243 {
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244 int numtries, result;
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245
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246 if ( this->screen == NULL ) {
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247 return(SDL_GRAB_OFF);
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248 }
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249 if ( ! SDL_Window ) {
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250 return(mode); /* Will be set later on mode switch */
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251 }
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252 if ( mode == SDL_GRAB_OFF ) {
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253 XUngrabPointer(SDL_Display, CurrentTime);
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254 if ( this->screen->flags & SDL_FULLSCREEN ) {
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255 /* Rebind the mouse to the fullscreen window */
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256 for ( numtries = 0; numtries < 10; ++numtries ) {
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257 result = XGrabPointer(SDL_Display, FSwindow,
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258 True, 0,
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259 GrabModeAsync, GrabModeAsync,
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260 FSwindow, None, CurrentTime);
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261 if ( result == AlreadyGrabbed ) {
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262 break;
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263 }
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264 SDL_Delay(100);
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265 }
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266 }
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267 #ifdef GRAB_FULLSCREEN
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268 if ( !(this->screen->flags & SDL_FULLSCREEN) )
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269 #endif
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270 XUngrabKeyboard(SDL_Display, CurrentTime);
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271 } else {
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272 if ( this->screen->flags & SDL_FULLSCREEN ) {
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273 /* Unbind the mouse from the fullscreen window */
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274 XUngrabPointer(SDL_Display, CurrentTime);
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275 }
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276 /* Try to grab the mouse */
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277 for ( numtries = 0; numtries < 10; ++numtries ) {
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278 result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
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279 GrabModeAsync, GrabModeAsync,
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280 SDL_Window, None, CurrentTime);
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281 if ( result != AlreadyGrabbed ) {
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282 break;
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283 }
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284 SDL_Delay(100);
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285 }
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286 #ifdef GRAB_FULLSCREEN
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287 if ( !(this->screen->flags & SDL_FULLSCREEN) )
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288 #endif
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289 XGrabKeyboard(SDL_Display, WMwindow, True,
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290 GrabModeAsync, GrabModeAsync, CurrentTime);
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291
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292 /* Raise the window if we grab the mouse */
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293 if ( !(this->screen->flags & SDL_FULLSCREEN) )
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294 XRaiseWindow(SDL_Display, WMwindow);
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295 }
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296 XSync(SDL_Display, False);
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297
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298 return(mode);
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299 }
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300
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301 SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode)
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302 {
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303 SDL_Lock_EventThread();
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304 mode = X11_GrabInputNoLock(this, mode);
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305 SDL_Unlock_EventThread();
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306
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307 return(mode);
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308 }
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309
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310 /* If 'info' is the right version, this function fills it and returns 1.
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311 Otherwise, in case of a version mismatch, it returns -1.
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312 */
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313 static void lock_display(void)
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314 {
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315 SDL_Lock_EventThread();
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316 }
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317 static void unlock_display(void)
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318 {
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319 /* Make sure any X11 transactions are completed */
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320 SDL_VideoDevice *this = current_video;
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321 XSync(SDL_Display, False);
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322 SDL_Unlock_EventThread();
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323 }
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324 int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info)
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325 {
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326 if ( info->version.major <= SDL_MAJOR_VERSION ) {
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327 info->subsystem = SDL_SYSWM_X11;
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328 info->info.x11.display = SDL_Display;
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329 info->info.x11.window = SDL_Window;
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330 if ( SDL_VERSIONNUM(info->version.major,
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331 info->version.minor,
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332 info->version.patch) >= 1002 ) {
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333 info->info.x11.fswindow = FSwindow;
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334 info->info.x11.wmwindow = WMwindow;
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335 }
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336 info->info.x11.lock_func = lock_display;
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337 info->info.x11.unlock_func = unlock_display;
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338 return(1);
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339 } else {
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340 SDL_SetError("Application not compiled with SDL %d.%d\n",
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341 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
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342 return(-1);
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343 }
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344 }
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