Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11mouse.c @ 1657:5b0805ceb50f SDL-1.3
Merge trunk-1.3-2
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 28 Apr 2006 16:55:41 +0000 |
| parents | 3ba88cb7eb1b |
| children | 782fd950bd46 c121d94672cb 79a4c9017550 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 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 Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #include <X11/Xlib.h> | |
| 25 #include <X11/Xutil.h> | |
| 26 | |
| 27 #include "SDL_mouse.h" | |
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28 #include "../../events/SDL_events_c.h" |
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29 #include "../SDL_cursor_c.h" |
| 0 | 30 #include "SDL_x11dga_c.h" |
| 31 #include "SDL_x11mouse_c.h" | |
| 32 | |
| 33 | |
| 34 /* The implementation dependent data for the window manager cursor */ | |
| 35 struct WMcursor { | |
| 36 Cursor x_cursor; | |
| 37 }; | |
| 38 | |
| 39 | |
| 40 void X11_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 41 { | |
| 42 if ( SDL_Display != NULL ) { | |
| 43 SDL_Lock_EventThread(); | |
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44 XFreeCursor(SDL_Display, cursor->x_cursor); |
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45 XSync(SDL_Display, False); |
| 0 | 46 SDL_Unlock_EventThread(); |
| 47 } | |
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48 SDL_free(cursor); |
| 0 | 49 } |
| 50 | |
| 51 WMcursor *X11_CreateWMCursor(_THIS, | |
| 52 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 53 { | |
| 54 WMcursor *cursor; | |
| 55 XGCValues GCvalues; | |
| 56 GC GCcursor; | |
| 57 XImage *data_image, *mask_image; | |
| 58 Pixmap data_pixmap, mask_pixmap; | |
| 59 int clen, i; | |
| 60 char *x_data, *x_mask; | |
| 61 static XColor black = { 0, 0, 0, 0 }; | |
| 62 static XColor white = { 0xffff, 0xffff, 0xffff, 0xffff }; | |
| 63 | |
| 64 /* Allocate the cursor memory */ | |
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65 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor)); |
| 0 | 66 if ( cursor == NULL ) { |
| 67 SDL_OutOfMemory(); | |
| 68 return(NULL); | |
| 69 } | |
| 70 | |
| 71 /* Mix the mask and the data */ | |
| 72 clen = (w/8)*h; | |
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73 x_data = (char *)SDL_malloc(clen); |
| 0 | 74 if ( x_data == NULL ) { |
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75 SDL_free(cursor); |
| 0 | 76 SDL_OutOfMemory(); |
| 77 return(NULL); | |
| 78 } | |
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79 x_mask = (char *)SDL_malloc(clen); |
| 0 | 80 if ( x_mask == NULL ) { |
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81 SDL_free(cursor); |
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82 SDL_free(x_data); |
| 0 | 83 SDL_OutOfMemory(); |
| 84 return(NULL); | |
| 85 } | |
| 86 for ( i=0; i<clen; ++i ) { | |
| 87 /* The mask is OR'd with the data to turn inverted color | |
| 88 pixels black since inverted color cursors aren't supported | |
| 89 under X11. | |
| 90 */ | |
| 91 x_mask[i] = data[i] | mask[i]; | |
| 92 x_data[i] = data[i]; | |
| 93 } | |
| 94 | |
| 95 /* Prevent the event thread from running while we use the X server */ | |
| 96 SDL_Lock_EventThread(); | |
| 97 | |
| 98 /* Create the data image */ | |
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99 data_image = XCreateImage(SDL_Display, |
| 0 | 100 DefaultVisual(SDL_Display, SDL_Screen), |
| 101 1, XYBitmap, 0, x_data, w, h, 8, w/8); | |
| 102 data_image->byte_order = MSBFirst; | |
| 103 data_image->bitmap_bit_order = MSBFirst; | |
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104 data_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
| 0 | 105 |
| 106 /* Create the data mask */ | |
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107 mask_image = XCreateImage(SDL_Display, |
| 0 | 108 DefaultVisual(SDL_Display, SDL_Screen), |
| 109 1, XYBitmap, 0, x_mask, w, h, 8, w/8); | |
| 110 mask_image->byte_order = MSBFirst; | |
| 111 mask_image->bitmap_bit_order = MSBFirst; | |
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112 mask_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
| 0 | 113 |
| 114 /* Create the graphics context */ | |
| 115 GCvalues.function = GXcopy; | |
| 116 GCvalues.foreground = ~0; | |
| 117 GCvalues.background = 0; | |
| 118 GCvalues.plane_mask = AllPlanes; | |
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119 GCcursor = XCreateGC(SDL_Display, data_pixmap, |
| 0 | 120 (GCFunction|GCForeground|GCBackground|GCPlaneMask), |
| 121 &GCvalues); | |
| 122 | |
| 123 /* Blit the images to the pixmaps */ | |
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124 XPutImage(SDL_Display, data_pixmap, GCcursor, data_image, |
| 0 | 125 0, 0, 0, 0, w, h); |
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126 XPutImage(SDL_Display, mask_pixmap, GCcursor, mask_image, |
| 0 | 127 0, 0, 0, 0, w, h); |
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128 XFreeGC(SDL_Display, GCcursor); |
| 0 | 129 /* These free the x_data and x_mask memory pointers */ |
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130 XDestroyImage(data_image); |
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131 XDestroyImage(mask_image); |
| 0 | 132 |
| 133 /* Create the cursor */ | |
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134 cursor->x_cursor = XCreatePixmapCursor(SDL_Display, data_pixmap, |
| 0 | 135 mask_pixmap, &black, &white, hot_x, hot_y); |
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136 XFreePixmap(SDL_Display, data_pixmap); |
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137 XFreePixmap(SDL_Display, mask_pixmap); |
| 0 | 138 |
| 139 /* Release the event thread */ | |
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140 XSync(SDL_Display, False); |
| 0 | 141 SDL_Unlock_EventThread(); |
| 142 | |
| 143 return(cursor); | |
| 144 } | |
| 145 | |
| 146 int X11_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 147 { | |
| 148 /* Don't do anything if the display is gone */ | |
| 149 if ( SDL_Display == NULL ) { | |
| 150 return(0); | |
| 151 } | |
| 152 | |
| 153 /* Set the X11 cursor cursor, or blank if cursor is NULL */ | |
| 154 if ( SDL_Window ) { | |
| 155 SDL_Lock_EventThread(); | |
| 156 if ( cursor == NULL ) { | |
| 157 if ( SDL_BlankCursor != NULL ) { | |
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158 XDefineCursor(SDL_Display, SDL_Window, |
| 0 | 159 SDL_BlankCursor->x_cursor); |
| 160 } | |
| 161 } else { | |
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162 XDefineCursor(SDL_Display, SDL_Window, cursor->x_cursor); |
| 0 | 163 } |
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164 XSync(SDL_Display, False); |
| 0 | 165 SDL_Unlock_EventThread(); |
| 166 } | |
| 167 return(1); | |
| 168 } | |
| 169 | |
| 170 void X11_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 171 { | |
| 172 if ( using_dga & DGA_MOUSE ) { | |
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173 SDL_PrivateMouseMotion(0, 0, x, y); |
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174 } else if ( mouse_relative) { |
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175 /* RJR: March 28, 2000 |
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176 leave physical cursor at center of screen if |
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177 mouse hidden and grabbed */ |
| 0 | 178 SDL_PrivateMouseMotion(0, 0, x, y); |
| 179 } else { | |
| 180 SDL_Lock_EventThread(); | |
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181 XWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, x, y); |
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182 XSync(SDL_Display, False); |
| 0 | 183 SDL_Unlock_EventThread(); |
| 184 } | |
| 185 } | |
| 186 | |
| 187 /* Sets the mouse acceleration from a string of the form: | |
| 188 2/1/0 | |
| 189 The first number is the numerator, followed by the acceleration | |
| 190 denumenator and threshold. | |
| 191 */ | |
| 192 static void SetMouseAccel(_THIS, const char *accel_param) | |
| 193 { | |
| 194 int i; | |
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195 size_t len; |
| 0 | 196 int accel_value[3]; |
| 197 char *mouse_param, *mouse_param_buf, *pin; | |
| 198 | |
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199 len = SDL_strlen(accel_param)+1; |
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200 mouse_param_buf = SDL_stack_alloc(char, len); |
| 0 | 201 if ( ! mouse_param_buf ) { |
| 202 return; | |
| 203 } | |
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204 SDL_strlcpy(mouse_param_buf, accel_param, len); |
| 0 | 205 mouse_param = mouse_param_buf; |
| 206 | |
| 207 for ( i=0; (i < 3) && mouse_param; ++i ) { | |
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208 pin = SDL_strchr(mouse_param, '/'); |
| 0 | 209 if ( pin ) { |
| 210 *pin = '\0'; | |
| 211 } | |
| 212 accel_value[i] = atoi(mouse_param); | |
| 213 if ( pin ) { | |
| 214 mouse_param = pin+1; | |
| 215 } else { | |
| 216 mouse_param = NULL; | |
| 217 } | |
| 218 } | |
| 219 if ( mouse_param_buf ) { | |
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220 XChangePointerControl(SDL_Display, True, True, |
| 0 | 221 accel_value[0], accel_value[1], accel_value[2]); |
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222 SDL_free(mouse_param_buf); |
| 0 | 223 } |
| 224 } | |
| 225 | |
| 226 /* Check to see if we need to enter or leave mouse relative mode */ | |
| 227 void X11_CheckMouseModeNoLock(_THIS) | |
| 228 { | |
| 1657 | 229 const Uint8 full_focus = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS); |
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230 char *env_override; |
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231 int enable_relative = 1; |
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232 |
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233 /* Allow the user to override the relative mouse mode. |
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234 They almost never want to do this, as it seriously affects |
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235 applications that rely on continuous relative mouse motion. |
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236 */ |
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237 env_override = SDL_getenv("SDL_MOUSE_RELATIVE"); |
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238 if ( env_override ) { |
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239 enable_relative = atoi(env_override); |
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240 } |
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241 |
| 0 | 242 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
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243 if ( enable_relative && |
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244 !(SDL_cursorstate & CURSOR_VISIBLE) && |
| 0 | 245 (this->input_grab != SDL_GRAB_OFF) && |
| 1657 | 246 (SDL_GetAppState() & full_focus) == full_focus ) { |
| 0 | 247 if ( ! mouse_relative ) { |
| 248 X11_EnableDGAMouse(this); | |
| 249 if ( ! (using_dga & DGA_MOUSE) ) { | |
| 250 char *xmouse_accel; | |
| 251 | |
| 252 SDL_GetMouseState(&mouse_last.x, &mouse_last.y); | |
| 253 /* Use as raw mouse mickeys as possible */ | |
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254 XGetPointerControl(SDL_Display, |
| 0 | 255 &mouse_accel.numerator, |
| 256 &mouse_accel.denominator, | |
| 257 &mouse_accel.threshold); | |
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258 xmouse_accel=SDL_getenv("SDL_VIDEO_X11_MOUSEACCEL"); |
| 0 | 259 if ( xmouse_accel ) { |
| 260 SetMouseAccel(this, xmouse_accel); | |
| 261 } | |
| 262 } | |
| 263 mouse_relative = 1; | |
| 264 } | |
| 265 } else { | |
| 266 if ( mouse_relative ) { | |
| 267 if ( using_dga & DGA_MOUSE ) { | |
| 268 X11_DisableDGAMouse(this); | |
| 269 } else { | |
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changeset
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270 XChangePointerControl(SDL_Display, True, True, |
| 0 | 271 mouse_accel.numerator, |
| 272 mouse_accel.denominator, | |
| 273 mouse_accel.threshold); | |
| 274 } | |
| 275 mouse_relative = 0; | |
| 276 } | |
| 277 } | |
| 278 } | |
| 279 void X11_CheckMouseMode(_THIS) | |
| 280 { | |
| 281 SDL_Lock_EventThread(); | |
| 282 X11_CheckMouseModeNoLock(this); | |
| 283 SDL_Unlock_EventThread(); | |
| 284 } |