Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11mouse.c @ 1358:c71e05b4dc2e
More header massaging... works great on Windows. ;-)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 10 Feb 2006 06:48:43 +0000 |
| parents | 604d73db6802 |
| children | 19418e4422cb |
| 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 */ |
| 22 | |
| 23 #include <X11/Xlib.h> | |
| 24 #include <X11/Xutil.h> | |
| 25 | |
| 26 #include "SDL_mouse.h" | |
| 27 #include "SDL_events_c.h" | |
| 28 #include "SDL_cursor_c.h" | |
| 29 #include "SDL_x11dga_c.h" | |
| 30 #include "SDL_x11mouse_c.h" | |
| 31 | |
| 32 | |
| 33 /* The implementation dependent data for the window manager cursor */ | |
| 34 struct WMcursor { | |
| 35 Cursor x_cursor; | |
| 36 }; | |
| 37 | |
| 38 | |
| 39 void X11_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 40 { | |
| 41 if ( SDL_Display != NULL ) { | |
| 42 SDL_Lock_EventThread(); | |
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43 pXFreeCursor(SDL_Display, cursor->x_cursor); |
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44 pXSync(SDL_Display, False); |
| 0 | 45 SDL_Unlock_EventThread(); |
| 46 } | |
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47 SDL_free(cursor); |
| 0 | 48 } |
| 49 | |
| 50 WMcursor *X11_CreateWMCursor(_THIS, | |
| 51 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 52 { | |
| 53 WMcursor *cursor; | |
| 54 XGCValues GCvalues; | |
| 55 GC GCcursor; | |
| 56 XImage *data_image, *mask_image; | |
| 57 Pixmap data_pixmap, mask_pixmap; | |
| 58 int clen, i; | |
| 59 char *x_data, *x_mask; | |
| 60 static XColor black = { 0, 0, 0, 0 }; | |
| 61 static XColor white = { 0xffff, 0xffff, 0xffff, 0xffff }; | |
| 62 | |
| 63 /* Allocate the cursor memory */ | |
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64 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor)); |
| 0 | 65 if ( cursor == NULL ) { |
| 66 SDL_OutOfMemory(); | |
| 67 return(NULL); | |
| 68 } | |
| 69 | |
| 70 /* Mix the mask and the data */ | |
| 71 clen = (w/8)*h; | |
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72 x_data = (char *)SDL_malloc(clen); |
| 0 | 73 if ( x_data == NULL ) { |
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74 SDL_free(cursor); |
| 0 | 75 SDL_OutOfMemory(); |
| 76 return(NULL); | |
| 77 } | |
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78 x_mask = (char *)SDL_malloc(clen); |
| 0 | 79 if ( x_mask == NULL ) { |
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80 SDL_free(cursor); |
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81 SDL_free(x_data); |
| 0 | 82 SDL_OutOfMemory(); |
| 83 return(NULL); | |
| 84 } | |
| 85 for ( i=0; i<clen; ++i ) { | |
| 86 /* The mask is OR'd with the data to turn inverted color | |
| 87 pixels black since inverted color cursors aren't supported | |
| 88 under X11. | |
| 89 */ | |
| 90 x_mask[i] = data[i] | mask[i]; | |
| 91 x_data[i] = data[i]; | |
| 92 } | |
| 93 | |
| 94 /* Prevent the event thread from running while we use the X server */ | |
| 95 SDL_Lock_EventThread(); | |
| 96 | |
| 97 /* Create the data image */ | |
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98 data_image = pXCreateImage(SDL_Display, |
| 0 | 99 DefaultVisual(SDL_Display, SDL_Screen), |
| 100 1, XYBitmap, 0, x_data, w, h, 8, w/8); | |
| 101 data_image->byte_order = MSBFirst; | |
| 102 data_image->bitmap_bit_order = MSBFirst; | |
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103 data_pixmap = pXCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
| 0 | 104 |
| 105 /* Create the data mask */ | |
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106 mask_image = pXCreateImage(SDL_Display, |
| 0 | 107 DefaultVisual(SDL_Display, SDL_Screen), |
| 108 1, XYBitmap, 0, x_mask, w, h, 8, w/8); | |
| 109 mask_image->byte_order = MSBFirst; | |
| 110 mask_image->bitmap_bit_order = MSBFirst; | |
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111 mask_pixmap = pXCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
| 0 | 112 |
| 113 /* Create the graphics context */ | |
| 114 GCvalues.function = GXcopy; | |
| 115 GCvalues.foreground = ~0; | |
| 116 GCvalues.background = 0; | |
| 117 GCvalues.plane_mask = AllPlanes; | |
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118 GCcursor = pXCreateGC(SDL_Display, data_pixmap, |
| 0 | 119 (GCFunction|GCForeground|GCBackground|GCPlaneMask), |
| 120 &GCvalues); | |
| 121 | |
| 122 /* Blit the images to the pixmaps */ | |
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123 pXPutImage(SDL_Display, data_pixmap, GCcursor, data_image, |
| 0 | 124 0, 0, 0, 0, w, h); |
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125 pXPutImage(SDL_Display, mask_pixmap, GCcursor, mask_image, |
| 0 | 126 0, 0, 0, 0, w, h); |
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127 pXFreeGC(SDL_Display, GCcursor); |
| 0 | 128 /* These free the x_data and x_mask memory pointers */ |
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129 pXDestroyImage(data_image); |
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130 pXDestroyImage(mask_image); |
| 0 | 131 |
| 132 /* Create the cursor */ | |
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133 cursor->x_cursor = pXCreatePixmapCursor(SDL_Display, data_pixmap, |
| 0 | 134 mask_pixmap, &black, &white, hot_x, hot_y); |
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135 pXFreePixmap(SDL_Display, data_pixmap); |
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136 pXFreePixmap(SDL_Display, mask_pixmap); |
| 0 | 137 |
| 138 /* Release the event thread */ | |
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139 pXSync(SDL_Display, False); |
| 0 | 140 SDL_Unlock_EventThread(); |
| 141 | |
| 142 return(cursor); | |
| 143 } | |
| 144 | |
| 145 int X11_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 146 { | |
| 147 /* Don't do anything if the display is gone */ | |
| 148 if ( SDL_Display == NULL ) { | |
| 149 return(0); | |
| 150 } | |
| 151 | |
| 152 /* Set the X11 cursor cursor, or blank if cursor is NULL */ | |
| 153 if ( SDL_Window ) { | |
| 154 SDL_Lock_EventThread(); | |
| 155 if ( cursor == NULL ) { | |
| 156 if ( SDL_BlankCursor != NULL ) { | |
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157 pXDefineCursor(SDL_Display, SDL_Window, |
| 0 | 158 SDL_BlankCursor->x_cursor); |
| 159 } | |
| 160 } else { | |
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161 pXDefineCursor(SDL_Display, SDL_Window, cursor->x_cursor); |
| 0 | 162 } |
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163 pXSync(SDL_Display, False); |
| 0 | 164 SDL_Unlock_EventThread(); |
| 165 } | |
| 166 return(1); | |
| 167 } | |
| 168 | |
| 169 void X11_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 170 { | |
| 171 if ( using_dga & DGA_MOUSE ) { | |
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172 SDL_PrivateMouseMotion(0, 0, x, y); |
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173 } else if ( mouse_relative) { |
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174 /* RJR: March 28, 2000 |
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175 leave physical cursor at center of screen if |
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176 mouse hidden and grabbed */ |
| 0 | 177 SDL_PrivateMouseMotion(0, 0, x, y); |
| 178 } else { | |
| 179 SDL_Lock_EventThread(); | |
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180 pXWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, x, y); |
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181 pXSync(SDL_Display, False); |
| 0 | 182 SDL_Unlock_EventThread(); |
| 183 } | |
| 184 } | |
| 185 | |
| 186 /* Sets the mouse acceleration from a string of the form: | |
| 187 2/1/0 | |
| 188 The first number is the numerator, followed by the acceleration | |
| 189 denumenator and threshold. | |
| 190 */ | |
| 191 static void SetMouseAccel(_THIS, const char *accel_param) | |
| 192 { | |
| 193 int i; | |
| 194 int accel_value[3]; | |
| 195 char *mouse_param, *mouse_param_buf, *pin; | |
| 196 | |
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197 mouse_param_buf = (char *)SDL_malloc(SDL_strlen(accel_param)+1); |
| 0 | 198 if ( ! mouse_param_buf ) { |
| 199 return; | |
| 200 } | |
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201 SDL_strcpy(mouse_param_buf, accel_param); |
| 0 | 202 mouse_param = mouse_param_buf; |
| 203 | |
| 204 for ( i=0; (i < 3) && mouse_param; ++i ) { | |
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205 pin = SDL_strchr(mouse_param, '/'); |
| 0 | 206 if ( pin ) { |
| 207 *pin = '\0'; | |
| 208 } | |
| 209 accel_value[i] = atoi(mouse_param); | |
| 210 if ( pin ) { | |
| 211 mouse_param = pin+1; | |
| 212 } else { | |
| 213 mouse_param = NULL; | |
| 214 } | |
| 215 } | |
| 216 if ( mouse_param_buf ) { | |
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217 pXChangePointerControl(SDL_Display, True, True, |
| 0 | 218 accel_value[0], accel_value[1], accel_value[2]); |
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219 SDL_free(mouse_param_buf); |
| 0 | 220 } |
| 221 } | |
| 222 | |
| 223 /* Check to see if we need to enter or leave mouse relative mode */ | |
| 224 void X11_CheckMouseModeNoLock(_THIS) | |
| 225 { | |
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226 char *env_override; |
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227 int enable_relative = 1; |
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228 |
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229 /* Allow the user to override the relative mouse mode. |
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230 They almost never want to do this, as it seriously affects |
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231 applications that rely on continuous relative mouse motion. |
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232 */ |
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233 env_override = SDL_getenv("SDL_MOUSE_RELATIVE"); |
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234 if ( env_override ) { |
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235 enable_relative = atoi(env_override); |
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236 } |
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237 |
| 0 | 238 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
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239 if ( enable_relative && |
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240 !(SDL_cursorstate & CURSOR_VISIBLE) && |
| 0 | 241 (this->input_grab != SDL_GRAB_OFF) && |
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242 (SDL_GetAppState() & SDL_APPACTIVE) ) { |
| 0 | 243 if ( ! mouse_relative ) { |
| 244 X11_EnableDGAMouse(this); | |
| 245 if ( ! (using_dga & DGA_MOUSE) ) { | |
| 246 char *xmouse_accel; | |
| 247 | |
| 248 SDL_GetMouseState(&mouse_last.x, &mouse_last.y); | |
| 249 /* Use as raw mouse mickeys as possible */ | |
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250 pXGetPointerControl(SDL_Display, |
| 0 | 251 &mouse_accel.numerator, |
| 252 &mouse_accel.denominator, | |
| 253 &mouse_accel.threshold); | |
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254 xmouse_accel=SDL_getenv("SDL_VIDEO_X11_MOUSEACCEL"); |
| 0 | 255 if ( xmouse_accel ) { |
| 256 SetMouseAccel(this, xmouse_accel); | |
| 257 } | |
| 258 } | |
| 259 mouse_relative = 1; | |
| 260 } | |
| 261 } else { | |
| 262 if ( mouse_relative ) { | |
| 263 if ( using_dga & DGA_MOUSE ) { | |
| 264 X11_DisableDGAMouse(this); | |
| 265 } else { | |
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266 pXChangePointerControl(SDL_Display, True, True, |
| 0 | 267 mouse_accel.numerator, |
| 268 mouse_accel.denominator, | |
| 269 mouse_accel.threshold); | |
| 270 } | |
| 271 mouse_relative = 0; | |
| 272 } | |
| 273 } | |
| 274 } | |
| 275 void X11_CheckMouseMode(_THIS) | |
| 276 { | |
| 277 SDL_Lock_EventThread(); | |
| 278 X11_CheckMouseModeNoLock(this); | |
| 279 SDL_Unlock_EventThread(); | |
| 280 } |