Mercurial > sdl-ios-xcode
annotate src/video/wincommon/SDL_sysmouse.c @ 78:e9582f471c02
Added the environment variable SDL_MOUSE_NORELATIVE to completely disable
relative mouse motion if the application desires it. UNDOCUMENTED!!
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Sat, 23 Jun 2001 18:51:29 +0000 |
| parents | e30a8ce27c22 |
| children | e8157fcb3114 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997, 1998, 1999 Sam Lantinga | |
| 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 | |
| 20 slouken@devolution.com | |
| 21 */ | |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include <stdlib.h> | |
| 29 #include <windows.h> | |
| 30 | |
| 31 #include "SDL_error.h" | |
| 32 #include "SDL_mouse.h" | |
| 33 #include "SDL_sysmouse_c.h" | |
| 34 #include "SDL_events_c.h" | |
| 35 #include "SDL_cursor_c.h" | |
| 36 #include "SDL_lowvideo.h" | |
| 37 | |
| 38 #ifdef _WIN32_WCE | |
| 39 #define USE_STATIC_CURSOR | |
| 40 #endif | |
| 41 | |
| 42 HCURSOR SDL_hcursor = NULL; /* Exported for SDL_eventloop.c */ | |
| 43 | |
| 44 /* The implementation dependent data for the window manager cursor */ | |
| 45 /* For some reason when creating a windows cursor, the ands and xors memory | |
| 46 is not copied, so we need to keep track of it and free it when we are done | |
| 47 with the cursor. If we free the memory prematurely, the app crashes. :-} | |
| 48 */ | |
| 49 struct WMcursor { | |
| 50 HCURSOR curs; | |
| 51 #ifndef USE_STATIC_CURSOR | |
| 52 Uint8 *ands; | |
| 53 Uint8 *xors; | |
| 54 #endif | |
| 55 }; | |
| 56 | |
| 57 /* Convert bits to padded bytes */ | |
| 58 #define PAD_BITS(bits) ((bits+7)/8) | |
| 59 | |
| 60 #ifdef CURSOR_DEBUG | |
| 61 static void PrintBITMAP(FILE *out, char *bits, int w, int h) | |
| 62 { | |
| 63 int i; | |
| 64 unsigned char ch; | |
| 65 | |
| 66 while ( h-- > 0 ) { | |
| 67 for ( i=0; i<w; ++i ) { | |
| 68 if ( (i%8) == 0 ) | |
| 69 ch = *bits++; | |
| 70 if ( ch&0x80 ) | |
| 71 fprintf(out, "X"); | |
| 72 else | |
| 73 fprintf(out, " "); | |
| 74 ch <<= 1; | |
| 75 } | |
| 76 fprintf(out, "\n"); | |
| 77 } | |
| 78 } | |
| 79 #endif | |
| 80 | |
| 81 #ifndef USE_STATIC_CURSOR | |
| 82 /* Local functions to convert the SDL cursor mask into Windows format */ | |
| 83 static void memnot(Uint8 *dst, Uint8 *src, int len) | |
| 84 { | |
| 85 while ( len-- > 0 ) | |
| 86 *dst++ = ~*src++; | |
| 87 } | |
| 88 static void memxor(Uint8 *dst, Uint8 *src1, Uint8 *src2, int len) | |
| 89 { | |
| 90 while ( len-- > 0 ) | |
| 91 *dst++ = (*src1++)^(*src2++); | |
| 92 } | |
| 93 #endif /* !USE_STATIC_CURSOR */ | |
| 94 | |
| 95 void WIN_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 96 { | |
| 97 #ifndef USE_STATIC_CURSOR | |
| 98 if ( cursor->curs != NULL ) | |
| 99 DestroyCursor(cursor->curs); | |
| 100 if ( cursor->ands != NULL ) | |
| 101 free(cursor->ands); | |
| 102 if ( cursor->xors != NULL ) | |
| 103 free(cursor->xors); | |
| 104 #endif /* !USE_STATIC_CURSOR */ | |
| 105 free(cursor); | |
| 106 } | |
| 107 | |
| 108 WMcursor *WIN_CreateWMCursor(_THIS, | |
| 109 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 110 { | |
| 111 #ifdef USE_STATIC_CURSOR | |
| 112 WMcursor *cursor; | |
| 113 | |
| 114 /* Allocate the cursor */ | |
| 115 cursor = (WMcursor *)malloc(sizeof(*cursor)); | |
| 116 if ( cursor ) { | |
| 117 cursor->curs = LoadCursor(NULL, IDC_ARROW); | |
| 118 } | |
| 119 return(cursor); | |
| 120 #else | |
| 121 WMcursor *cursor; | |
| 122 int allowed_x; | |
| 123 int allowed_y; | |
| 124 int run, pad, i; | |
| 125 Uint8 *aptr, *xptr; | |
| 126 | |
| 127 /* Check to make sure the cursor size is okay */ | |
| 128 allowed_x = GetSystemMetrics(SM_CXCURSOR); | |
| 129 allowed_y = GetSystemMetrics(SM_CYCURSOR); | |
| 130 if ( (w > allowed_x) || (h > allowed_y) ) { | |
| 131 SDL_SetError("Only cursors of dimension (%dx%d) are allowed", | |
| 132 allowed_x, allowed_y); | |
| 133 return(NULL); | |
| 134 } | |
| 135 | |
| 136 /* Allocate the cursor */ | |
| 137 cursor = (WMcursor *)malloc(sizeof(*cursor)); | |
| 138 if ( cursor == NULL ) { | |
| 139 SDL_SetError("Out of memory"); | |
| 140 return(NULL); | |
| 141 } | |
| 142 cursor->curs = NULL; | |
| 143 cursor->ands = NULL; | |
| 144 cursor->xors = NULL; | |
| 145 | |
| 146 /* Pad out to the normal cursor size */ | |
| 147 run = PAD_BITS(w); | |
| 148 pad = PAD_BITS(allowed_x)-run; | |
| 149 aptr = cursor->ands = (Uint8 *)malloc((run+pad)*allowed_y); | |
| 150 xptr = cursor->xors = (Uint8 *)malloc((run+pad)*allowed_y); | |
| 151 if ( (aptr == NULL) || (xptr == NULL) ) { | |
| 152 WIN_FreeWMCursor(NULL, cursor); | |
| 153 SDL_OutOfMemory(); | |
| 154 return(NULL); | |
| 155 } | |
| 156 for ( i=0; i<h; ++i ) { | |
| 157 memxor(xptr, data, mask, run); | |
| 158 xptr += run; | |
| 159 data += run; | |
| 160 memnot(aptr, mask, run); | |
| 161 mask += run; | |
| 162 aptr += run; | |
| 163 memset(xptr, 0, pad); | |
| 164 xptr += pad; | |
| 165 memset(aptr, ~0, pad); | |
| 166 aptr += pad; | |
| 167 } | |
| 168 pad += run; | |
| 169 for ( ; i<allowed_y; ++i ) { | |
| 170 memset(xptr, 0, pad); | |
| 171 xptr += pad; | |
| 172 memset(aptr, ~0, pad); | |
| 173 aptr += pad; | |
| 174 } | |
| 175 | |
| 176 /* Create the cursor */ | |
| 177 cursor->curs = CreateCursor( | |
| 178 (HINSTANCE)GetWindowLong(SDL_Window, GWL_HINSTANCE), | |
| 179 hot_x, hot_y, allowed_x, allowed_y, | |
| 180 cursor->ands, cursor->xors); | |
| 181 if ( cursor->curs == NULL ) { | |
| 182 WIN_FreeWMCursor(NULL, cursor); | |
| 183 SDL_SetError("Windows couldn't create the requested cursor"); | |
| 184 return(NULL); | |
| 185 } | |
| 186 return(cursor); | |
| 187 #endif /* USE_STATIC_CURSOR */ | |
| 188 } | |
| 189 | |
| 190 int WIN_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 191 { | |
| 192 POINT mouse_pos; | |
| 193 | |
| 194 /* The fullscreen cursor must be done in software with DirectInput */ | |
|
13
e30a8ce27c22
Fixed double-mouse event bug on Windows using OpenGL
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
195 if ( !this->screen || DDRAW_FULLSCREEN() ) { |
| 0 | 196 return(0); |
| 197 } | |
| 198 | |
| 199 /* Set the window cursor to our cursor, if applicable */ | |
| 200 if ( cursor != NULL ) { | |
| 201 SDL_hcursor = cursor->curs; | |
| 202 } else { | |
| 203 SDL_hcursor = NULL; | |
| 204 } | |
| 205 GetCursorPos(&mouse_pos); | |
| 206 if ( PtInRect(&SDL_bounds, mouse_pos) ) { | |
| 207 SetCursor(SDL_hcursor); | |
| 208 } | |
| 209 return(1); | |
| 210 } | |
| 211 | |
| 212 void WIN_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 213 { | |
| 214 POINT pt; | |
| 215 | |
|
13
e30a8ce27c22
Fixed double-mouse event bug on Windows using OpenGL
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
216 if ( DDRAW_FULLSCREEN() ) { |
| 0 | 217 x += (this->screen->offset % this->screen->pitch) / |
| 218 this->screen->format->BytesPerPixel; | |
| 219 y += (this->screen->offset / this->screen->pitch); | |
| 220 SDL_PrivateMouseMotion(0, 0, x, y); | |
| 221 } else if ( mouse_relative) { | |
| 222 /* RJR: March 28, 2000 | |
| 223 leave physical cursor at center of screen if | |
| 224 mouse hidden and grabbed */ | |
| 225 SDL_PrivateMouseMotion(0, 0, x, y); | |
| 226 } else { | |
| 227 pt.x = x; | |
| 228 pt.y = y; | |
| 229 ClientToScreen(SDL_Window, &pt); | |
| 230 SetCursorPos(pt.x, pt.y); | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 /* Update the current mouse state and position */ | |
| 235 void WIN_UpdateMouse(_THIS) | |
| 236 { | |
| 237 RECT rect; | |
| 238 POINT pt; | |
| 239 | |
|
13
e30a8ce27c22
Fixed double-mouse event bug on Windows using OpenGL
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
240 if ( ! DDRAW_FULLSCREEN() ) { |
| 0 | 241 GetClientRect(SDL_Window, &rect); |
| 242 GetCursorPos(&pt); | |
| 243 MapWindowPoints(NULL, SDL_Window, &pt, 1); | |
| 244 if (PtInRect(&rect, pt) && (WindowFromPoint(pt) == SDL_Window)){ | |
| 245 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); | |
| 246 SDL_PrivateMouseMotion(0,0, (Sint16)pt.x, (Sint16)pt.y); | |
| 247 } else { | |
| 248 SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 /* Check to see if we need to enter or leave mouse relative mode */ | |
| 254 void WIN_CheckMouseMode(_THIS) | |
| 255 { | |
| 256 /* If the mouse is hidden and input is grabbed, we use relative mode */ | |
| 257 if ( !(SDL_cursorstate & CURSOR_VISIBLE) && | |
| 258 (this->input_grab != SDL_GRAB_OFF) ) { | |
| 259 mouse_relative = 1; | |
| 260 } else { | |
| 261 mouse_relative = 0; | |
| 262 } | |
| 263 } |