Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11mouse.c @ 828:85ba077211bc
Lots of people have contributed cash. :)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 15 Feb 2004 22:04:46 +0000 |
| parents | b8d311d90021 |
| children | 07def9d03315 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include <stdlib.h> | |
| 29 #include <stdio.h> | |
| 30 #include <string.h> | |
| 31 | |
| 32 #include <X11/Xlib.h> | |
| 33 #include <X11/Xutil.h> | |
| 34 | |
| 35 #include "SDL_error.h" | |
| 36 #include "SDL_mouse.h" | |
| 37 #include "SDL_events_c.h" | |
| 38 #include "SDL_cursor_c.h" | |
| 39 #include "SDL_x11dga_c.h" | |
| 40 #include "SDL_x11mouse_c.h" | |
| 41 | |
| 42 | |
| 43 /* The implementation dependent data for the window manager cursor */ | |
| 44 struct WMcursor { | |
| 45 Cursor x_cursor; | |
| 46 }; | |
| 47 | |
| 48 | |
| 49 void X11_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 50 { | |
| 51 if ( SDL_Display != NULL ) { | |
| 52 SDL_Lock_EventThread(); | |
| 53 XFreeCursor(SDL_Display, cursor->x_cursor); | |
| 54 XSync(SDL_Display, False); | |
| 55 SDL_Unlock_EventThread(); | |
| 56 } | |
| 57 free(cursor); | |
| 58 } | |
| 59 | |
| 60 WMcursor *X11_CreateWMCursor(_THIS, | |
| 61 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 62 { | |
| 63 WMcursor *cursor; | |
| 64 XGCValues GCvalues; | |
| 65 GC GCcursor; | |
| 66 XImage *data_image, *mask_image; | |
| 67 Pixmap data_pixmap, mask_pixmap; | |
| 68 int clen, i; | |
| 69 char *x_data, *x_mask; | |
| 70 static XColor black = { 0, 0, 0, 0 }; | |
| 71 static XColor white = { 0xffff, 0xffff, 0xffff, 0xffff }; | |
| 72 | |
| 73 /* Allocate the cursor memory */ | |
| 74 cursor = (WMcursor *)malloc(sizeof(WMcursor)); | |
| 75 if ( cursor == NULL ) { | |
| 76 SDL_OutOfMemory(); | |
| 77 return(NULL); | |
| 78 } | |
| 79 | |
| 80 /* Mix the mask and the data */ | |
| 81 clen = (w/8)*h; | |
| 82 x_data = (char *)malloc(clen); | |
| 83 if ( x_data == NULL ) { | |
| 84 free(cursor); | |
| 85 SDL_OutOfMemory(); | |
| 86 return(NULL); | |
| 87 } | |
| 88 x_mask = (char *)malloc(clen); | |
| 89 if ( x_mask == NULL ) { | |
| 90 free(cursor); | |
| 91 free(x_data); | |
| 92 SDL_OutOfMemory(); | |
| 93 return(NULL); | |
| 94 } | |
| 95 for ( i=0; i<clen; ++i ) { | |
| 96 /* The mask is OR'd with the data to turn inverted color | |
| 97 pixels black since inverted color cursors aren't supported | |
| 98 under X11. | |
| 99 */ | |
| 100 x_mask[i] = data[i] | mask[i]; | |
| 101 x_data[i] = data[i]; | |
| 102 } | |
| 103 | |
| 104 /* Prevent the event thread from running while we use the X server */ | |
| 105 SDL_Lock_EventThread(); | |
| 106 | |
| 107 /* Create the data image */ | |
| 108 data_image = XCreateImage(SDL_Display, | |
| 109 DefaultVisual(SDL_Display, SDL_Screen), | |
| 110 1, XYBitmap, 0, x_data, w, h, 8, w/8); | |
| 111 data_image->byte_order = MSBFirst; | |
| 112 data_image->bitmap_bit_order = MSBFirst; | |
| 113 data_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); | |
| 114 | |
| 115 /* Create the data mask */ | |
| 116 mask_image = XCreateImage(SDL_Display, | |
| 117 DefaultVisual(SDL_Display, SDL_Screen), | |
| 118 1, XYBitmap, 0, x_mask, w, h, 8, w/8); | |
| 119 mask_image->byte_order = MSBFirst; | |
| 120 mask_image->bitmap_bit_order = MSBFirst; | |
| 121 mask_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); | |
| 122 | |
| 123 /* Create the graphics context */ | |
| 124 GCvalues.function = GXcopy; | |
| 125 GCvalues.foreground = ~0; | |
| 126 GCvalues.background = 0; | |
| 127 GCvalues.plane_mask = AllPlanes; | |
| 128 GCcursor = XCreateGC(SDL_Display, data_pixmap, | |
| 129 (GCFunction|GCForeground|GCBackground|GCPlaneMask), | |
| 130 &GCvalues); | |
| 131 | |
| 132 /* Blit the images to the pixmaps */ | |
| 133 XPutImage(SDL_Display, data_pixmap, GCcursor, data_image, | |
| 134 0, 0, 0, 0, w, h); | |
| 135 XPutImage(SDL_Display, mask_pixmap, GCcursor, mask_image, | |
| 136 0, 0, 0, 0, w, h); | |
| 137 XFreeGC(SDL_Display, GCcursor); | |
| 138 /* These free the x_data and x_mask memory pointers */ | |
| 139 XDestroyImage(data_image); | |
| 140 XDestroyImage(mask_image); | |
| 141 | |
| 142 /* Create the cursor */ | |
| 143 cursor->x_cursor = XCreatePixmapCursor(SDL_Display, data_pixmap, | |
| 144 mask_pixmap, &black, &white, hot_x, hot_y); | |
| 145 | |
| 146 /* Release the event thread */ | |
| 147 XSync(SDL_Display, False); | |
| 148 SDL_Unlock_EventThread(); | |
| 149 | |
| 150 return(cursor); | |
| 151 } | |
| 152 | |
| 153 int X11_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 154 { | |
| 155 /* Don't do anything if the display is gone */ | |
| 156 if ( SDL_Display == NULL ) { | |
| 157 return(0); | |
| 158 } | |
| 159 | |
| 160 /* Set the X11 cursor cursor, or blank if cursor is NULL */ | |
| 161 if ( SDL_Window ) { | |
| 162 SDL_Lock_EventThread(); | |
| 163 if ( cursor == NULL ) { | |
| 164 if ( SDL_BlankCursor != NULL ) { | |
| 165 XDefineCursor(SDL_Display, SDL_Window, | |
| 166 SDL_BlankCursor->x_cursor); | |
| 167 } | |
| 168 } else { | |
| 169 XDefineCursor(SDL_Display, SDL_Window, cursor->x_cursor); | |
| 170 } | |
| 171 XSync(SDL_Display, False); | |
| 172 SDL_Unlock_EventThread(); | |
| 173 } | |
| 174 return(1); | |
| 175 } | |
| 176 | |
| 177 void X11_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 178 { | |
| 179 if ( using_dga & DGA_MOUSE ) { | |
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180 SDL_PrivateMouseMotion(0, 0, x, y); |
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181 } else if ( mouse_relative) { |
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182 /* RJR: March 28, 2000 |
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183 leave physical cursor at center of screen if |
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184 mouse hidden and grabbed */ |
| 0 | 185 SDL_PrivateMouseMotion(0, 0, x, y); |
| 186 } else { | |
| 187 SDL_Lock_EventThread(); | |
| 188 XWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, x, y); | |
| 189 XSync(SDL_Display, False); | |
| 190 SDL_Unlock_EventThread(); | |
| 191 } | |
| 192 } | |
| 193 | |
| 194 /* Sets the mouse acceleration from a string of the form: | |
| 195 2/1/0 | |
| 196 The first number is the numerator, followed by the acceleration | |
| 197 denumenator and threshold. | |
| 198 */ | |
| 199 static void SetMouseAccel(_THIS, const char *accel_param) | |
| 200 { | |
| 201 int i; | |
| 202 int accel_value[3]; | |
| 203 char *mouse_param, *mouse_param_buf, *pin; | |
| 204 | |
| 205 mouse_param_buf = (char *)malloc(strlen(accel_param)+1); | |
| 206 if ( ! mouse_param_buf ) { | |
| 207 return; | |
| 208 } | |
| 209 strcpy(mouse_param_buf, accel_param); | |
| 210 mouse_param = mouse_param_buf; | |
| 211 | |
| 212 for ( i=0; (i < 3) && mouse_param; ++i ) { | |
| 213 pin = strchr(mouse_param, '/'); | |
| 214 if ( pin ) { | |
| 215 *pin = '\0'; | |
| 216 } | |
| 217 accel_value[i] = atoi(mouse_param); | |
| 218 if ( pin ) { | |
| 219 mouse_param = pin+1; | |
| 220 } else { | |
| 221 mouse_param = NULL; | |
| 222 } | |
| 223 } | |
| 224 if ( mouse_param_buf ) { | |
| 225 XChangePointerControl(SDL_Display, True, True, | |
| 226 accel_value[0], accel_value[1], accel_value[2]); | |
| 227 free(mouse_param_buf); | |
| 228 } | |
| 229 } | |
| 230 | |
| 231 /* Check to see if we need to enter or leave mouse relative mode */ | |
| 232 void X11_CheckMouseModeNoLock(_THIS) | |
| 233 { | |
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234 char *env_override; |
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235 int enable_relative = 1; |
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236 |
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237 /* Allow the user to override the relative mouse mode. |
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238 They almost never want to do this, as it seriously affects |
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239 applications that rely on continuous relative mouse motion. |
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240 */ |
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241 env_override = getenv("SDL_MOUSE_RELATIVE"); |
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242 if ( env_override ) { |
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243 enable_relative = atoi(env_override); |
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244 } |
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245 |
| 0 | 246 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
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247 if ( enable_relative && |
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248 !(SDL_cursorstate & CURSOR_VISIBLE) && |
| 0 | 249 (this->input_grab != SDL_GRAB_OFF) && |
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250 (SDL_GetAppState() & SDL_APPACTIVE) ) { |
| 0 | 251 if ( ! mouse_relative ) { |
| 252 X11_EnableDGAMouse(this); | |
| 253 if ( ! (using_dga & DGA_MOUSE) ) { | |
| 254 char *xmouse_accel; | |
| 255 | |
| 256 SDL_GetMouseState(&mouse_last.x, &mouse_last.y); | |
| 257 /* Use as raw mouse mickeys as possible */ | |
| 258 XGetPointerControl(SDL_Display, | |
| 259 &mouse_accel.numerator, | |
| 260 &mouse_accel.denominator, | |
| 261 &mouse_accel.threshold); | |
| 262 xmouse_accel=getenv("SDL_VIDEO_X11_MOUSEACCEL"); | |
| 263 if ( xmouse_accel ) { | |
| 264 SetMouseAccel(this, xmouse_accel); | |
| 265 } | |
| 266 } | |
| 267 mouse_relative = 1; | |
| 268 } | |
| 269 } else { | |
| 270 if ( mouse_relative ) { | |
| 271 if ( using_dga & DGA_MOUSE ) { | |
| 272 X11_DisableDGAMouse(this); | |
| 273 } else { | |
| 274 XChangePointerControl(SDL_Display, True, True, | |
| 275 mouse_accel.numerator, | |
| 276 mouse_accel.denominator, | |
| 277 mouse_accel.threshold); | |
| 278 } | |
| 279 mouse_relative = 0; | |
| 280 } | |
| 281 } | |
| 282 } | |
| 283 void X11_CheckMouseMode(_THIS) | |
| 284 { | |
| 285 SDL_Lock_EventThread(); | |
| 286 X11_CheckMouseModeNoLock(this); | |
| 287 SDL_Unlock_EventThread(); | |
| 288 } |