Mercurial > sdl-ios-xcode
annotate src/video/wincommon/SDL_sysmouse.c @ 1407:0c6941483cc6
Whoops, forgot to check in this fix
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 21 Feb 2006 18:20:10 +0000 |
| parents | d910939febfa |
| children | bb6839704ed6 |
| 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 |
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24 #include "SDL_windows.h" |
| 0 | 25 |
| 26 #include "SDL_mouse.h" | |
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27 #include "../../events/SDL_events_c.h" |
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28 #include "../SDL_cursor_c.h" |
| 0 | 29 #include "SDL_sysmouse_c.h" |
| 30 #include "SDL_lowvideo.h" | |
| 31 | |
| 32 #ifdef _WIN32_WCE | |
| 33 #define USE_STATIC_CURSOR | |
| 34 #endif | |
| 35 | |
| 36 HCURSOR SDL_hcursor = NULL; /* Exported for SDL_eventloop.c */ | |
| 37 | |
| 38 /* The implementation dependent data for the window manager cursor */ | |
| 39 /* For some reason when creating a windows cursor, the ands and xors memory | |
| 40 is not copied, so we need to keep track of it and free it when we are done | |
| 41 with the cursor. If we free the memory prematurely, the app crashes. :-} | |
| 42 */ | |
| 43 struct WMcursor { | |
| 44 HCURSOR curs; | |
| 45 #ifndef USE_STATIC_CURSOR | |
| 46 Uint8 *ands; | |
| 47 Uint8 *xors; | |
| 48 #endif | |
| 49 }; | |
| 50 | |
| 51 /* Convert bits to padded bytes */ | |
| 52 #define PAD_BITS(bits) ((bits+7)/8) | |
| 53 | |
| 54 #ifdef CURSOR_DEBUG | |
| 55 static void PrintBITMAP(FILE *out, char *bits, int w, int h) | |
| 56 { | |
| 57 int i; | |
| 58 unsigned char ch; | |
| 59 | |
| 60 while ( h-- > 0 ) { | |
| 61 for ( i=0; i<w; ++i ) { | |
| 62 if ( (i%8) == 0 ) | |
| 63 ch = *bits++; | |
| 64 if ( ch&0x80 ) | |
| 65 fprintf(out, "X"); | |
| 66 else | |
| 67 fprintf(out, " "); | |
| 68 ch <<= 1; | |
| 69 } | |
| 70 fprintf(out, "\n"); | |
| 71 } | |
| 72 } | |
| 73 #endif | |
| 74 | |
| 75 #ifndef USE_STATIC_CURSOR | |
| 76 /* Local functions to convert the SDL cursor mask into Windows format */ | |
| 77 static void memnot(Uint8 *dst, Uint8 *src, int len) | |
| 78 { | |
| 79 while ( len-- > 0 ) | |
| 80 *dst++ = ~*src++; | |
| 81 } | |
| 82 static void memxor(Uint8 *dst, Uint8 *src1, Uint8 *src2, int len) | |
| 83 { | |
| 84 while ( len-- > 0 ) | |
| 85 *dst++ = (*src1++)^(*src2++); | |
| 86 } | |
| 87 #endif /* !USE_STATIC_CURSOR */ | |
| 88 | |
| 89 void WIN_FreeWMCursor(_THIS, WMcursor *cursor) | |
| 90 { | |
| 91 #ifndef USE_STATIC_CURSOR | |
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Fixed cursor resource leak in Windows (thanks Huib-Jan Imbens!)
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92 if ( cursor->curs == GetCursor() ) |
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93 SetCursor(NULL); |
| 0 | 94 if ( cursor->curs != NULL ) |
| 95 DestroyCursor(cursor->curs); | |
| 96 if ( cursor->ands != NULL ) | |
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97 SDL_free(cursor->ands); |
| 0 | 98 if ( cursor->xors != NULL ) |
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99 SDL_free(cursor->xors); |
| 0 | 100 #endif /* !USE_STATIC_CURSOR */ |
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101 SDL_free(cursor); |
| 0 | 102 } |
| 103 | |
| 104 WMcursor *WIN_CreateWMCursor(_THIS, | |
| 105 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) | |
| 106 { | |
| 107 #ifdef USE_STATIC_CURSOR | |
| 108 WMcursor *cursor; | |
| 109 | |
| 110 /* Allocate the cursor */ | |
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111 cursor = (WMcursor *)SDL_malloc(sizeof(*cursor)); |
| 0 | 112 if ( cursor ) { |
| 113 cursor->curs = LoadCursor(NULL, IDC_ARROW); | |
| 114 } | |
| 115 return(cursor); | |
| 116 #else | |
| 117 WMcursor *cursor; | |
| 118 int allowed_x; | |
| 119 int allowed_y; | |
| 120 int run, pad, i; | |
| 121 Uint8 *aptr, *xptr; | |
| 122 | |
| 123 /* Check to make sure the cursor size is okay */ | |
| 124 allowed_x = GetSystemMetrics(SM_CXCURSOR); | |
| 125 allowed_y = GetSystemMetrics(SM_CYCURSOR); | |
| 126 if ( (w > allowed_x) || (h > allowed_y) ) { | |
| 127 SDL_SetError("Only cursors of dimension (%dx%d) are allowed", | |
| 128 allowed_x, allowed_y); | |
| 129 return(NULL); | |
| 130 } | |
| 131 | |
| 132 /* Allocate the cursor */ | |
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133 cursor = (WMcursor *)SDL_malloc(sizeof(*cursor)); |
| 0 | 134 if ( cursor == NULL ) { |
| 135 SDL_SetError("Out of memory"); | |
| 136 return(NULL); | |
| 137 } | |
| 138 cursor->curs = NULL; | |
| 139 cursor->ands = NULL; | |
| 140 cursor->xors = NULL; | |
| 141 | |
| 142 /* Pad out to the normal cursor size */ | |
| 143 run = PAD_BITS(w); | |
| 144 pad = PAD_BITS(allowed_x)-run; | |
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145 aptr = cursor->ands = (Uint8 *)SDL_malloc((run+pad)*allowed_y); |
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146 xptr = cursor->xors = (Uint8 *)SDL_malloc((run+pad)*allowed_y); |
| 0 | 147 if ( (aptr == NULL) || (xptr == NULL) ) { |
| 148 WIN_FreeWMCursor(NULL, cursor); | |
| 149 SDL_OutOfMemory(); | |
| 150 return(NULL); | |
| 151 } | |
| 152 for ( i=0; i<h; ++i ) { | |
| 153 memxor(xptr, data, mask, run); | |
| 154 xptr += run; | |
| 155 data += run; | |
| 156 memnot(aptr, mask, run); | |
| 157 mask += run; | |
| 158 aptr += run; | |
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159 SDL_memset(xptr, 0, pad); |
| 0 | 160 xptr += pad; |
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161 SDL_memset(aptr, ~0, pad); |
| 0 | 162 aptr += pad; |
| 163 } | |
| 164 pad += run; | |
| 165 for ( ; i<allowed_y; ++i ) { | |
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166 SDL_memset(xptr, 0, pad); |
| 0 | 167 xptr += pad; |
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168 SDL_memset(aptr, ~0, pad); |
| 0 | 169 aptr += pad; |
| 170 } | |
| 171 | |
| 172 /* Create the cursor */ | |
| 173 cursor->curs = CreateCursor( | |
| 174 (HINSTANCE)GetWindowLong(SDL_Window, GWL_HINSTANCE), | |
| 175 hot_x, hot_y, allowed_x, allowed_y, | |
| 176 cursor->ands, cursor->xors); | |
| 177 if ( cursor->curs == NULL ) { | |
| 178 WIN_FreeWMCursor(NULL, cursor); | |
| 179 SDL_SetError("Windows couldn't create the requested cursor"); | |
| 180 return(NULL); | |
| 181 } | |
| 182 return(cursor); | |
| 183 #endif /* USE_STATIC_CURSOR */ | |
| 184 } | |
| 185 | |
| 186 int WIN_ShowWMCursor(_THIS, WMcursor *cursor) | |
| 187 { | |
| 188 POINT mouse_pos; | |
| 189 | |
| 190 /* The fullscreen cursor must be done in software with DirectInput */ | |
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Fixed double-mouse event bug on Windows using OpenGL
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191 if ( !this->screen || DDRAW_FULLSCREEN() ) { |
| 0 | 192 return(0); |
| 193 } | |
| 194 | |
| 195 /* Set the window cursor to our cursor, if applicable */ | |
| 196 if ( cursor != NULL ) { | |
| 197 SDL_hcursor = cursor->curs; | |
| 198 } else { | |
| 199 SDL_hcursor = NULL; | |
| 200 } | |
| 201 GetCursorPos(&mouse_pos); | |
| 202 if ( PtInRect(&SDL_bounds, mouse_pos) ) { | |
| 203 SetCursor(SDL_hcursor); | |
| 204 } | |
| 205 return(1); | |
| 206 } | |
| 207 | |
| 208 void WIN_WarpWMCursor(_THIS, Uint16 x, Uint16 y) | |
| 209 { | |
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210 if ( DDRAW_FULLSCREEN() ) { |
| 0 | 211 SDL_PrivateMouseMotion(0, 0, x, y); |
| 212 } else if ( mouse_relative) { | |
| 213 /* RJR: March 28, 2000 | |
| 214 leave physical cursor at center of screen if | |
| 215 mouse hidden and grabbed */ | |
| 216 SDL_PrivateMouseMotion(0, 0, x, y); | |
| 217 } else { | |
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Fixed mouse warp position bug with offset video modes
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218 POINT pt; |
| 0 | 219 pt.x = x; |
| 220 pt.y = y; | |
| 221 ClientToScreen(SDL_Window, &pt); | |
| 222 SetCursorPos(pt.x, pt.y); | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 /* Update the current mouse state and position */ | |
| 227 void WIN_UpdateMouse(_THIS) | |
| 228 { | |
| 229 RECT rect; | |
| 230 POINT pt; | |
| 231 | |
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232 if ( ! DDRAW_FULLSCREEN() ) { |
| 0 | 233 GetClientRect(SDL_Window, &rect); |
| 234 GetCursorPos(&pt); | |
| 235 MapWindowPoints(NULL, SDL_Window, &pt, 1); | |
| 236 if (PtInRect(&rect, pt) && (WindowFromPoint(pt) == SDL_Window)){ | |
| 237 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); | |
| 238 SDL_PrivateMouseMotion(0,0, (Sint16)pt.x, (Sint16)pt.y); | |
| 239 } else { | |
| 240 SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); | |
| 241 } | |
| 242 } | |
| 243 } | |
| 244 | |
| 245 /* Check to see if we need to enter or leave mouse relative mode */ | |
| 246 void WIN_CheckMouseMode(_THIS) | |
| 247 { | |
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248 #ifndef _WIN32_WCE |
| 0 | 249 /* If the mouse is hidden and input is grabbed, we use relative mode */ |
| 250 if ( !(SDL_cursorstate & CURSOR_VISIBLE) && | |
| 251 (this->input_grab != SDL_GRAB_OFF) ) { | |
| 252 mouse_relative = 1; | |
| 253 } else { | |
| 254 mouse_relative = 0; | |
| 255 } | |
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256 #else |
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257 mouse_relative = 0; |
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258 #endif |
| 0 | 259 } |